/* 企业官网旗舰版 —— 平台正式主力模板。配色/字体/圆角/背景一律走主题变量（AI 可调）。
   渐变一律从 --primary 派生（color-mix），换主色整站视觉自动跟随。 */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --ink: #182032;
    --text: #2b3546;
    --muted: #68738a;
    --line: #e5e9f1;
    --bg-soft: var(--surface, #f5f7fb);
    /* 深色分区底：从 --secondary 压深一档派生（比 brand 区更沉、同色系），跟随智能配色不留冷蓝残留 */
    --dark: color-mix(in srgb, var(--secondary, #122A4D) 52%, #0b0d12);
    /* 主色派生的深端与亮端（hero/横幅渐变、图形装饰共用） */
    --primary-deep: color-mix(in srgb, var(--primary) 42%, #060f24);
    --primary-lift: color-mix(in srgb, var(--primary) 70%, #6ea8ff);
}

html { scroll-behavior: smooth; }
/* hidden 属性恒生效：author 样式的 display（如 .product-card{display:flex}）会盖过 UA 的 [hidden]，必须显式压回 */
[hidden] { display: none !important; }
body { font-family: var(--font); color: var(--text); line-height: 1.75; background: var(--bg, #fff); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
h1, h2, h3 { text-wrap: balance; }
::selection { background: color-mix(in srgb, var(--primary) 22%, #fff); }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
.container { max-width: var(--container, 1280px); margin: 0 auto; padding: 0 28px; }

/* ============ 按钮 ============ */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 12px 28px; border-radius: var(--radius, 10px); font-weight: 600; font-size: 15px; letter-spacing: .01em; transition: transform .18s, box-shadow .18s, background .18s, color .18s, filter .18s; cursor: pointer; border: none; }
.btn:active { transform: translateY(0) scale(.98); }
.btn--lg { padding: 15px 38px; font-size: 16px; }
.btn--primary { background: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 82%, var(--primary-lift))); color: #fff; box-shadow: 0 14px 30px -14px color-mix(in srgb, var(--primary) 70%, transparent); }
.btn--primary:hover { transform: translateY(-2px); filter: brightness(1.08); box-shadow: 0 18px 36px -14px color-mix(in srgb, var(--primary) 78%, transparent); }
.btn--outline { background: transparent; border: 1.5px solid currentColor; color: var(--primary); }
.btn--outline:hover { background: var(--primary); border-color: var(--primary); color: #fff; transform: translateY(-2px); }
.btn--ghost { background: color-mix(in srgb, var(--primary) 8%, transparent); color: var(--primary); }
.btn--ghost:hover { background: var(--primary); color: #fff; }

/* ============ 页头 ============ */
.site-header { position: sticky; top: 0; z-index: 50; transition: background .2s; }
.site-header.header--static { position: static; }
.header-inner { display: flex; align-items: center; gap: 32px; height: 76px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; letter-spacing: -.01em; color: var(--primary); }
.logo img { height: 40px; width: auto; }
.nav { display: flex; align-items: center; gap: 4px; margin-left: auto; }
.nav a { position: relative; padding: 10px 16px; font-size: 15.5px; color: #44505f; transition: color .2s; }
.nav a::after { content: ""; position: absolute; left: 16px; right: 16px; bottom: 4px; height: 2px; background: var(--accent, var(--primary)); transform: scaleX(0); transform-origin: left; transition: transform .25s; }
.nav a:hover { color: var(--primary); }
.nav a:hover::after { transform: scaleX(1); }

/* ---- 多级导航：悬停下拉（桌面）。下拉面板恒浅底深字，不随页头风格走 ---- */
.nav-item { position: relative; }
.nav-item > a .nav-caret { margin-left: 5px; vertical-align: 1px; opacity: .55; transition: transform .2s; display: inline-block; }
.nav-item:hover > a .nav-caret { transform: rotate(180deg); }
.nav-drop { position: absolute; top: 100%; left: 8px; z-index: 60; min-width: 190px; padding: 8px; background: #fff; border-radius: 12px; border: 1px solid var(--line); box-shadow: 0 18px 40px -16px rgba(15,25,50,.28); opacity: 0; visibility: hidden; transform: translateY(8px); transition: opacity .18s, transform .18s, visibility .18s; }
.nav-item:hover > .nav-drop, .nav-item:focus-within > .nav-drop { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-drop a { display: block; padding: 9px 12px; font-size: 14px; color: #3c4657 !important; border-radius: 8px; white-space: nowrap; }
.nav-drop a::after { display: none; }
.nav-drop a:hover { background: color-mix(in srgb, var(--primary) 8%, #fff); color: var(--primary) !important; }
/* 三级：侧向飞出 */
.nav-drop-item { position: relative; }
.nav-drop-item > a { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.nav-caret--side { opacity: .5; }
.nav-drop--sub { top: -8px; left: calc(100% + 2px); }
.nav-drop-item:hover > .nav-drop--sub, .nav-drop-item:focus-within > .nav-drop--sub { opacity: 1; visibility: visible; transform: translateY(0); }
.header-actions { display: flex; align-items: center; gap: 14px; }
.header-phone { font-size: 17px; font-weight: 700; color: var(--primary); white-space: nowrap; }
.header-phone::before { content: "☏ "; }

.header--light { background: rgba(255,255,255,.92); backdrop-filter: saturate(160%) blur(10px); border-bottom: 1px solid var(--line); }
.header--solid { background: var(--primary); }
.header--solid .nav a, .header--solid .logo, .header--solid .header-phone { color: #fff; }
.header--solid .nav a { color: rgba(255,255,255,.85); }
.header--solid .nav a:hover { color: #fff; }
.header--solid .nav a::after { background: #fff; }
.header--transparent { background: rgba(16,22,33,.42); backdrop-filter: blur(8px); }
.header--transparent .nav a { color: rgba(255,255,255,.88); }
.header--transparent .logo, .header--transparent .header-phone, .header--transparent .nav a:hover { color: #fff; }
.header--transparent .nav a::after { background: #fff; }

/* ============ Hero ============ */
.hero { position: relative; overflow: hidden; color: #fff; background: linear-gradient(125deg, var(--primary-deep) 0%, var(--primary) 52%, var(--primary-lift) 118%); }
.hero-decor { position: absolute; inset: 0; pointer-events: none; opacity: .9;
    background-image: radial-gradient(60% 80% at 82% 18%, rgba(255,255,255,.16), transparent 60%),
        linear-gradient(to right, rgba(255,255,255,.06) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(255,255,255,.06) 1px, transparent 1px);
    background-size: auto, 56px 56px, 56px 56px;
    -webkit-mask-image: radial-gradient(ellipse 90% 90% at 70% 30%, #000 35%, transparent 100%);
            mask-image: radial-gradient(ellipse 90% 90% at 70% 30%, #000 35%, transparent 100%); }
.hero--ov-dark::before { content: ""; position: absolute; inset: 0; background: rgba(8,14,26,.45); }
.hero--ov-none .hero-decor { opacity: .5; }
.hero-inner { position: relative; z-index: 1; display: grid; grid-template-columns: 1.1fr .9fr; gap: 48px; align-items: center; padding: var(--sec-py, 110px) 0; }
.hero--h-compact .hero-inner { padding: 76px 0; }
.hero--h-tall .hero-inner { padding: 150px 0; }
.hero--centered .hero-inner { grid-template-columns: 1fr; text-align: center; max-width: 880px; margin: 0 auto; }
.hero--align-center .hero-inner { text-align: center; }
.hero--align-center .hero-copy { margin: 0 auto; }
.hero h1 { font-size: clamp(34px, 4.8vw, 56px); font-weight: 800; line-height: 1.12; letter-spacing: -.02em; margin-bottom: 20px; }
.hero-subtitle { font-size: clamp(16px, 1.7vw, 20px); line-height: 1.7; opacity: .9; margin-bottom: 36px; max-width: 36em; }
.hero--align-center .hero-subtitle, .hero--centered .hero-subtitle { margin-left: auto; margin-right: auto; }
.hero-visual { position: relative; }
.hero-shot { background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18); border-radius: 18px; padding: 22px; box-shadow: 0 40px 80px -34px rgba(0,0,0,.5); }
.hero-shot img, .hero-shot video { width: 100%; border-radius: 10px; display: block; }
/* 图片槽位放视频（Banner 短视频/企业宣传片）：与同槽位图片同尺寸裁切 */
.about-tile video, .about-panel video { width: 100%; height: 100%; object-fit: cover; display: block; }
/* 主视觉配图占位：白色尺寸提示框（提醒用户该处图片建议比例，上传替换）。span 元素隐藏，改用 ::after 标注 */
.hero-art { aspect-ratio: 4/3; border-radius: 18px; position: relative; display: grid; place-items: center;
    background: rgba(255,255,255,.92); border: 2px dashed rgba(255,255,255,.6);
    color: #8a94a3; font-size: 15px; font-weight: 600; text-align: center; }
.hero-art::after { content: "主视觉配图\A 建议比例 4 : 3"; white-space: pre; line-height: 1.7; }
.hero-art span { display: none; }

/* ============ 分区底色 / 区块标题 ============ */
.section { padding: var(--sec-py, 92px) 0; }
.sec-bg--white { background: #fff; color: var(--text); }
.sec-bg--light { background: var(--bg-soft); }
.sec-bg--brand { background: var(--secondary); color: #fff; }
.sec-bg--dark { background: var(--dark); color: #c9d2de; }
.sec-bg--brand .sec-en { color: rgba(255,255,255,.45); }
.sec-bg--brand h2, .sec-bg--dark h2 { color: #fff; }
.sec-bg--dark .sec-en { color: rgba(255,255,255,.3); }

.sec-head { margin-bottom: 48px; text-align: center; }
.sec-head--row { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; text-align: left; flex-wrap: wrap; }
.sec-head--left { text-align: left; }
.sec-en { display: block; font-size: clamp(28px, 3vw, 42px); font-weight: 800; letter-spacing: .12em; line-height: 1; color: color-mix(in srgb, var(--primary) 14%, #fff); text-transform: uppercase; }
.sec-bg--white .sec-en, .sec-bg--light .sec-en { color: color-mix(in srgb, var(--primary) 13%, #eef1f6); }
.sec-head h2 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 700; letter-spacing: -.01em; margin-top: -.5em; position: relative; padding-bottom: 14px; }
.sec-head:not(.sec-head--row):not(.sec-head--left) h2::after { content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%); width: 46px; height: 3px; border-radius: 3px; background: var(--accent, var(--primary)); }
.sec-sub { color: var(--muted); margin-top: 10px; }
.sec-bg--brand .sec-sub, .sec-bg--dark .sec-sub { color: rgba(255,255,255,.7); }
.sec-more { text-align: center; margin-top: 44px; }

/* ============ 关于 ============ */
.about-inner { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.about--text-stats .about-inner { grid-template-columns: 1fr; text-align: center; max-width: 860px; margin: 0 auto; }
.about-copy .sec-en { text-align: left; }
.about--text-stats .about-copy .sec-en { text-align: center; }
.about-copy h2 { font-size: clamp(24px, 2.6vw, 32px); font-weight: 700; margin: -.4em 0 18px; }
.about-text { color: var(--muted); font-size: 15.5px; }
.about-text p { margin-bottom: 12px; }
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.about-tile { border-radius: var(--radius, 10px); overflow: hidden; aspect-ratio: 4/3; background: var(--bg-soft); box-shadow: 0 20px 44px -28px rgba(20,40,80,.4); }
.about-tile img { width: 100%; height: 100%; object-fit: cover; }
.about-panel { border-radius: 16px; overflow: hidden; aspect-ratio: 16/11; background: linear-gradient(140deg, var(--primary), var(--primary-lift)); box-shadow: 0 30px 60px -28px rgba(20,40,80,.45); }
.about-panel img { width: 100%; height: 100%; object-fit: cover; }
.about-art { aspect-ratio: 16/11; border-radius: 16px; display: grid; place-items: center;
    background: var(--bg-soft); border: 2px dashed var(--line);
    color: var(--muted); font-size: 14px; font-weight: 600; text-align: center; }
.about-art::after { content: "企业实拍配图\A 建议比例 16 : 11"; white-space: pre; line-height: 1.7; }
.about-stats { display: flex; gap: 36px; margin: 26px 0; flex-wrap: wrap; }
.about-stats strong { font-size: 38px; font-weight: 800; color: var(--primary); line-height: 1; }
.about-stats i { font-style: normal; font-size: 22px; }
.about-stats span { display: block; color: var(--muted); font-size: 13.5px; margin-top: 6px; }

/* ============ 产品 ============ */
.product-tabs { display: flex; flex-wrap: wrap; gap: 10px; }
.product-tabs--center { justify-content: center; margin-bottom: 40px; }
.product-tab { display: inline-flex; align-items: center; gap: 7px; padding: 8px 20px; border-radius: 999px; font-size: 14px; border: 1px solid var(--line); color: #4b5563; background: #fff; transition: all .18s; }
.product-tab.is-active, .product-tab:hover { background: var(--primary); border-color: var(--primary); color: #fff; }
.product-tab .tab-count { font-size: 11.5px; line-height: 1; padding: 3px 7px; border-radius: 999px; background: color-mix(in srgb, var(--primary) 10%, #fff); color: var(--primary); font-weight: 600; }
.product-tab.is-active .tab-count, .product-tab:hover .tab-count { background: rgba(255,255,255,.22); color: #fff; }
/* 集合筹片（客户自建数据源的前端筛选）：虚线描边与分类链接区分 */
.product-tab--collection { border-style: dashed; }
.sec-bg--brand .product-tab { background: rgba(255,255,255,.12); border-color: rgba(255,255,255,.28); color: #fff; }
.sec-bg--brand .product-tab.is-active, .sec-bg--brand .product-tab:hover { background: #fff; color: var(--secondary); border-color: #fff; }

.product-grid { display: grid; grid-template-columns: repeat(var(--cols, 4), 1fr); gap: 24px; }
.product-card { background: #fff; border-radius: var(--radius, 10px); overflow: hidden; display: flex; flex-direction: column; transition: transform .22s, box-shadow .22s; }
.cards--shadow .product-card { box-shadow: 0 18px 42px -10px rgba(18, 38, 74, .24); }
.cards--bordered .product-card { border: 1px solid var(--line); box-shadow: none; }
.cards--flat .product-card { background: var(--bg-soft); box-shadow: none; }
.product-card:hover { transform: translateY(-6px); box-shadow: 0 26px 52px -22px rgba(20,40,80,.4); }
.product-card-img { overflow: hidden; }
.product-card-img img, .product-placeholder { width: 100%; aspect-ratio: 4/3; object-fit: cover; background: #eef1f5; transition: transform .4s; }
/* 无图占位：白底虚线框 + 尺寸/比例提示（框形本身即传达比例，提醒用户按尺寸备图上传） */
.product-placeholder { display: grid; place-items: center; background: #fff; border: 2px dashed #d7dde5;
    color: #97a1b0; font-size: 13px; font-weight: 600; text-align: center; }
.product-placeholder::after { content: "产品图\A 4 : 3"; white-space: pre; line-height: 1.6; }
.news-card .product-placeholder::after { content: "封面图\A 16 : 9"; }
.product-card:hover .product-card-img img { transform: scale(1.06); }
.product-card-body { padding: 16px 18px 18px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card-cat { align-self: flex-start; font-size: 11.5px; line-height: 1; padding: 4px 9px; border-radius: 999px; background: color-mix(in srgb, var(--primary) 9%, #fff); color: var(--primary); font-weight: 600; letter-spacing: .02em; }
.product-card-body h3 { font-size: 16px; font-weight: 600; color: var(--ink); }
.product-card-body p { font-size: 13px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.product-card-cta { margin-top: auto; align-self: flex-start; padding: 6px 16px; border-radius: 999px; background: color-mix(in srgb, var(--primary) 10%, #fff); color: var(--primary); font-size: 13px; font-weight: 600; }
.product-card:hover .product-card-cta { background: var(--primary); color: #fff; }
/* 产品列表版式 */
.product-rows { display: grid; gap: 16px; }
.product-row { display: grid; grid-template-columns: 200px 1fr; gap: 22px; background: #fff; border-radius: var(--radius, 10px); overflow: hidden; box-shadow: 0 12px 30px -20px rgba(20,40,80,.3); transition: transform .2s; }
.product-row:hover { transform: translateY(-3px); }
.product-row-img img, .product-row .product-placeholder { width: 100%; height: 100%; min-height: 150px; object-fit: cover; }
.product-row-body { padding: 20px 24px; display: flex; flex-direction: column; gap: 8px; }
.product-row-body h3 { font-size: 18px; color: var(--ink); }
.product-row-body p { color: var(--muted); font-size: 14px; }
.row-more { margin-top: auto; color: var(--primary); font-weight: 600; font-size: 14px; }

/* ============ 行业优势 ============ */
.feature-grid { display: grid; grid-template-columns: repeat(var(--cols, 4), 1fr); gap: 22px; }
.feature-item { background: #fff; border-radius: var(--radius, 10px); padding: 30px 26px; text-align: center; box-shadow: 0 12px 30px -20px rgba(20,40,80,.28); transition: transform .2s; }
.sec-bg--white .feature-item { background: var(--bg-soft); box-shadow: none; }
.feature-item:hover { transform: translateY(-5px); }
.feature-icon { width: 64px; height: 64px; margin: 0 auto 16px; display: grid; place-items: center; border-radius: 16px; font-size: 28px; color: #fff; background: linear-gradient(140deg, var(--primary), var(--primary-lift)); box-shadow: 0 10px 22px -10px color-mix(in srgb, var(--primary) 60%, transparent); }
.feature-item h3 { font-size: 17px; margin-bottom: 8px; color: var(--ink); }
.feature-item p { font-size: 13.5px; color: var(--muted); }
.features--split .feature-grid { grid-template-columns: 1fr; max-width: 760px; margin: 0 auto; }
.features--split .feature-item { display: grid; grid-template-columns: 64px 1fr; gap: 18px; text-align: left; align-items: center; }
.features--split .feature-icon { margin: 0; }

/* ============ 新闻 ============ */
.news-grid { display: grid; grid-template-columns: repeat(var(--cols, 3), 1fr); gap: 24px; }
.news-card { background: #fff; border-radius: var(--radius, 10px); overflow: hidden; box-shadow: 0 12px 30px -20px rgba(20,40,80,.28); transition: transform .2s; }
.news-card:hover { transform: translateY(-5px); box-shadow: 0 26px 52px -24px rgba(20,40,80,.36); }
.news-card-img img, .news-card .product-placeholder { width: 100%; aspect-ratio: 16/9; object-fit: cover; }
.news-card-body { padding: 18px 20px; }
.news-card-body time { color: var(--primary); font-size: 13px; font-weight: 600; }
.news-card-body h3 { font-size: 16.5px; margin: 8px 0 6px; color: var(--ink); }
.news-card-body p { font-size: 13.5px; color: var(--muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.news-list { list-style: none; max-width: 900px; margin: 0 auto; }
.news-list li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px; padding: 18px 4px; border-bottom: 1px solid var(--line); transition: background .2s; }
.news-list li:hover { background: var(--bg-soft); }
.news-list li a { flex: 1; min-width: 60%; font-weight: 500; font-size: 16px; }
.news-list li a:hover { color: var(--primary); }
.news-list li time { color: var(--muted); font-size: 13px; }
.news-list li p { width: 100%; color: var(--muted); font-size: 13px; margin-top: 4px; }

/* ============ 联系 ============ */
.contact-grid { display: grid; grid-template-columns: 1fr 1.15fr; gap: 44px; max-width: 1000px; margin: 0 auto; align-items: start; }
.contact-grid--single { grid-template-columns: 1fr; max-width: 620px; }
.contact--centered .contact-grid { grid-template-columns: 1fr; max-width: 640px; }
.contact-info { list-style: none; }
.contact-info li { padding: 13px 0; border-bottom: 1px solid color-mix(in srgb, currentColor 14%, transparent); font-size: 15.5px; }
.contact-info li span { display: inline-block; width: 52px; opacity: .65; }
.contact-form { display: grid; gap: 14px; background: #fff; border-radius: var(--radius, 10px); padding: 26px; box-shadow: 0 20px 44px -24px rgba(0,0,0,.4); }
.contact-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.contact-form input, .contact-form textarea { width: 100%; border: 1px solid var(--line); border-radius: var(--radius, 10px); padding: 12px 14px; font: inherit; font-size: 14px; color: var(--ink); background: #fff; resize: vertical; }
.contact-form input:focus, .contact-form textarea:focus { outline: none; border-color: var(--primary); }
.contact-form button { justify-self: start; }
.contact-feedback { font-size: 14px; margin: 0; }
.contact-feedback.is-ok { color: #15803d; }
.contact-feedback.is-err { color: #dc2626; }

/* ============ 内页 ============ */
.page-banner { position: relative; overflow: hidden; color: #fff; padding: 70px 0; background: linear-gradient(125deg, var(--primary-deep), var(--primary) 85%); }
.page-banner h1 { font-size: clamp(26px, 3vw, 34px); font-weight: 700; }
.page-banner .banner-sub { margin-top: 8px; font-size: 15px; opacity: .82; max-width: 44em; }
.article-detail, .detail-layout { max-width: 880px; margin: 0 auto; }
.article-meta { color: var(--muted); margin-bottom: 18px; }
.article-cover { border-radius: var(--radius, 10px); margin-bottom: 22px; }
.detail-summary { font-size: 16px; color: #4c5564; background: var(--bg-soft); padding: 18px 22px; border-radius: var(--radius, 10px); border-left: 3px solid var(--accent, var(--primary)); margin-bottom: 26px; }
.detail-images { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; margin-bottom: 26px; }
.detail-images img { border-radius: var(--radius, 10px); }
.detail-body { font-size: 15.5px; }
.detail-body p { margin-bottom: 14px; }
.detail-body img { max-width: 100%; height: auto; border-radius: var(--radius, 10px); margin: 16px 0; }
.spec-table { width: 100%; border-collapse: collapse; margin-top: 18px; border: 1px solid var(--line); border-radius: var(--radius, 10px); overflow: hidden; }
.spec-table th, .spec-table td { border-bottom: 1px solid var(--line); padding: 12px 18px; font-size: 14px; text-align: left; }
.spec-table th { background: var(--bg-soft); width: 180px; font-weight: 600; }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: none; }
.article-faq { margin-top: 40px; border-top: 1px solid var(--line); padding-top: 12px; }
.article-faq h3 { font-size: 16px; margin-top: 18px; }
.category-tabs { text-align: center; margin-bottom: 32px; }
.empty { text-align: center; color: var(--muted); padding: 52px 0; }

/* ============ 页脚 ============ */
/* 页脚深色 = 派生的 secondary（同主色色系的近黑），随配色方案协调，不再写死深蓝 */
.site-footer { background: var(--secondary, #121927); color: #97a1b1; margin-top: 0; }
.site-footer.footer--light { background: #f4f6f9; color: #5b6573; }
.site-footer.footer--light a { color: #38445a; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1.2fr; gap: 48px; padding: 60px 28px 44px; max-width: var(--container, 1280px); margin: 0 auto; }
.footer-name { font-size: 20px; font-weight: 700; color: #fff; margin-bottom: 14px; }
.footer-intro { font-size: 14px; line-height: 1.8; max-width: 420px; }
.footer-col h4 { color: #fff; font-size: 15px; margin-bottom: 16px; }
.footer-col ul { list-style: none; display: grid; gap: 9px; }
.footer-col a:hover { color: #fff; }
.footer-col li { font-size: 14px; }
.footer-bar { border-top: 1px solid rgba(255,255,255,.08); padding: 20px 0; }
.footer-bar p { font-size: 13px; color: #7b8696; text-align: center; }
.footer-beian { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px 20px; margin-top: 8px; }
.footer-beian a:hover { color: #c2cad6; }

/* ============ 语言切换 ============ */
/* 胶囊组：底色跟随页头文字色派生（深色页头=白字半透明底），当前项白底主色高对比 */
.lang-switch { display: inline-flex; gap: 2px; font-size: 13px; padding: 3px; border-radius: 999px; background: color-mix(in srgb, currentColor 10%, transparent); color: #44505f; }
.header--solid .lang-switch, .header--transparent .lang-switch { color: #fff; }
.lang-switch a { color: inherit; opacity: .8; padding: 3px 11px; border-radius: 999px; white-space: nowrap; transition: opacity .15s, background .15s; }
.lang-switch a:hover { opacity: 1; background: color-mix(in srgb, currentColor 10%, transparent); }
.lang-switch a.current { opacity: 1; background: #fff; color: var(--primary); font-weight: 600; box-shadow: 0 1px 4px rgba(10, 20, 40, .18); }
.lang-switch--nav { display: none; }

/* ============ 移动端汉堡菜单 ============ */
.nav-toggle { position: absolute; width: 1px; height: 1px; opacity: 0; pointer-events: none; }
.nav-burger { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 44px; height: 44px; margin-left: 12px; cursor: pointer; border-radius: 10px; flex: none; }
.nav-burger span { display: block; width: 24px; height: 2px; margin: 0 auto; border-radius: 2px; background: var(--ink); transition: transform .26s ease, opacity .2s ease; }
.header--solid .nav-burger span, .header--transparent .nav-burger span { background: #fff; }
.nav-phone { display: none; }

@media (max-width: 900px) {
    .nav-burger { display: flex; }
    .header-actions { display: none; }
    .header-inner { height: 64px; gap: 12px; }
    .nav {
        position: absolute; top: 100%; left: 0; right: 0; margin: 0;
        flex-direction: column; align-items: stretch; gap: 0;
        background: #fff; border-top: 1px solid var(--line);
        box-shadow: 0 22px 40px -20px rgba(20, 40, 80, .35);
        max-height: 0; overflow: hidden; visibility: hidden;
        transition: max-height .32s ease, visibility 0s linear .32s;
    }
    .nav a { padding: 15px 28px; font-size: 16px; color: #2c3645; border-bottom: 1px solid var(--line); }
    /* 深色/透明页头的白字规则优先级更高，会让白底汉堡面板里的菜单隐身——窄屏强制压回深色 */
    .header--solid .nav a, .header--transparent .nav a { color: #2c3645; }
    .header--solid .nav a:hover, .header--transparent .nav a:hover { color: var(--primary); }
    .nav a::after { display: none; }
    /* 移动端多级菜单：下拉改常驻展开、逐级缩进（汉堡面板内没有 hover） */
    .nav-item { width: 100%; }
    .nav-item > a { display: flex; align-items: center; }
    .nav-caret { display: none; }
    .nav-drop { position: static; opacity: 1; visibility: visible; transform: none; min-width: 0; padding: 0; background: transparent; border: 0; border-radius: 0; box-shadow: none; transition: none; }
    .nav-drop a { padding: 13px 28px 13px 46px; font-size: 15px; color: #4b5563 !important; border-bottom: 1px solid var(--line); border-radius: 0; white-space: normal; }
    .nav-drop--sub { position: static; }
    .nav-drop--sub a { padding-left: 64px; }
    .nav-phone { display: block; padding: 16px 28px; font-weight: 700; color: var(--primary); }
    /* 汉堡面板内的语言入口（面板恒白底，选择器带 .site-header 压过深色页头的白字规则） */
    .site-header .lang-switch--nav { display: inline-flex; margin: 14px 28px; color: #44505f; background: color-mix(in srgb, #44505f 10%, transparent); align-self: flex-start; }
    .site-header .lang-switch--nav a { border-bottom: none; padding: 4px 12px; font-size: 13px; color: inherit; }
    .nav-toggle:checked ~ .nav { max-height: 78vh; overflow-y: auto; visibility: visible; transition: max-height .32s ease; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
    .nav-toggle:checked ~ .nav-burger span:nth-child(2) { opacity: 0; }
    .nav-toggle:checked ~ .nav-burger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
}

/* ============ 响应式 ============ */
@media (max-width: 980px) {
    .hero-inner, .about-inner, .contact-grid { grid-template-columns: 1fr; gap: 36px; }
    .hero-visual { display: none; }
    .product-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .news-grid, .feature-grid { grid-template-columns: repeat(2, 1fr) !important; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .sec-head--row { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 640px) {
    .container { padding: 0 18px; }
    /* 筛选栏改单行横滑（chips 模式）：不换行不撑破页面，隐藏滚动条。
       max-width 必须显式压住：sec-head--row 纵排后它是 align-items:flex-start 的 flex 子项，
       fit-content 下限是 min-content（chips 全 nowrap 不可再缩），否则按内容宽撑破整页出横向滚动 */
    .product-tabs { flex-wrap: nowrap; max-width: 100%; overflow-x: auto; justify-content: flex-start; padding-bottom: 6px; -webkit-overflow-scrolling: touch; scrollbar-width: none; }
    .product-tabs::-webkit-scrollbar { display: none; }
    .product-tab { flex-shrink: 0; white-space: nowrap; }
    .product-grid, .news-grid, .feature-grid, .contact-row, .product-row { grid-template-columns: 1fr !important; }
    .section { padding: 56px 0; }
    .hero--h-normal .hero-inner, .hero-inner { padding: 64px 0; }
    .footer-grid { grid-template-columns: 1fr; gap: 28px; padding: 44px 18px 32px; }
    .about-stats { gap: 24px; justify-content: space-between; }
    .product-row { grid-template-columns: 1fr !important; }
}

/* ---- 构建期分页导航 ---- */
.pagination{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:36px 0 4px}
.pagination .page-link{min-width:38px;padding:7px 12px;text-align:center;border:1px solid rgba(128,128,128,.28);border-radius:var(--radius,10px);font-size:14px;text-decoration:none;color:inherit;transition:border-color .15s,color .15s}
.pagination .page-link:hover{border-color:var(--primary,#2563eb);color:var(--primary,#2563eb)}
.pagination .page-link.is-current{background:var(--primary,#2563eb);border-color:var(--primary,#2563eb);color:#fff;pointer-events:none}
.pagination .page-prev,.pagination .page-next{padding:7px 16px}