/* ==========================================================================
   RRSC CMS 前端样式  ——  参照人人商城官网风格，PC/移动端自适应
   主色：蓝色渐变 (#4A8CFF → #2563EB)，与原站一致
   ========================================================================== */

:root {
    --primary: #2b6bf3;
    --primary-dark: #1d54d8;
    --primary-2: #4a8cff;
    --grad: linear-gradient(135deg, #4a8cff 0%, #2563eb 100%);
    --grad-soft: linear-gradient(135deg, #eaf2ff 0%, #e3ecff 100%);
    --dark: #222222;
    --gray-900: #333333;
    --gray-700: #555555;
    --gray-500: #888888;
    --gray-300: #dddddd;
    --gray-100: #f5f6f8;
    --white: #ffffff;
    --radius: 10px;
    --shadow: 0 6px 24px rgba(0, 0, 0, .08);
    --shadow-hover: 0 14px 36px rgba(43, 107, 243, .18);
    --maxw: 1200px;
    --header-h: 70px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--gray-900);
    background: var(--white);
    line-height: 1.7;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; transition: color .2s; }
a:hover { color: var(--primary); }
img { max-width: 100%; display: block; border: 0; }
ul, ol { list-style: none; }
button, input, textarea, select { font-family: inherit; font-size: inherit; outline: none; }
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.35; color: var(--dark); }

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 15px; }
.row { display: flex; flex-wrap: wrap; margin: 0 -10px; }
.col { padding: 0 10px; }

/* ---------- 顶部条 ---------- */
.topbar {
    background: #2b2b2b; color: #bbb; font-size: 13px; height: 36px; line-height: 36px;
    display: block;
}
.topbar .container { display: flex; justify-content: space-between; }
.topbar a { color: #bbb; }
.topbar a:hover { color: #fff; }

/* ---------- 导航 ---------- */
.header {
    position: sticky; top: 0; z-index: 999; background: rgba(255, 255, 255, .96);
    backdrop-filter: blur(8px); box-shadow: 0 2px 12px rgba(0, 0, 0, .06);
}
.header-inner { display: flex; align-items: center; height: var(--header-h); gap: 20px; }
.logo { display: flex; align-items: center; gap: 10px; font-size: 22px; font-weight: 800; color: var(--primary); letter-spacing: 1px; }
.logo-mark {
    width: 38px; height: 38px; border-radius: 9px; background: var(--grad);
    display: flex; align-items: center; justify-content: center; color: #fff; font-size: 18px; font-weight: 700;
}
.nav { margin-left: auto; display: flex; align-items: center; }
.nav ul { display: flex; gap: 4px; }
.nav ul li a {
    display: block; padding: 10px 15px; font-size: 15px; color: var(--gray-900); border-radius: 6px; position: relative;
}
.nav ul li a:hover, .nav ul li a.active { color: var(--primary); }
.nav ul li a.active::after {
    content: ''; position: absolute; left: 15px; right: 15px; bottom: 2px; height: 3px;
    background: var(--grad); border-radius: 2px;
}
.header-cta { display: flex; align-items: center; gap: 10px; }

/* ---------- 导航「解决方案」悬浮下拉（原站同款） ---------- */
.nav ul li.has-drop { position: relative; }
.nav ul li.has-drop > a { display: flex; align-items: center; gap: 5px; }
.nav ul li.has-drop > a::after {
    content: ''; border: 4px solid transparent; border-top-color: currentColor;
    margin-top: 5px; transition: transform .28s;
}
.nav ul li.has-drop:hover > a::after { transform: rotate(180deg); margin-top: 1px; }
.nav-drop {
    position: absolute; top: 100%; left: 50%; width: 560px;
    transform: translate(-50%, 14px);
    background: #fff; border-radius: 14px; padding: 16px 16px 12px;
    box-shadow: 0 18px 52px rgba(0, 0, 0, .15); border: 1px solid #f0f2f7;
    opacity: 0; visibility: hidden; pointer-events: none;
    transition: opacity .28s cubic-bezier(.22, .61, .36, 1), transform .28s cubic-bezier(.22, .61, .36, 1), visibility .28s;
}
/* 悬浮桥接区：避免鼠标移向面板时经过间隙导致关闭 */
.nav-drop::before { content: ''; position: absolute; top: -18px; left: 0; right: 0; height: 18px; }
.nav ul li.has-drop:hover .nav-drop, .nav ul li.has-drop:focus-within .nav-drop {
    opacity: 1; visibility: visible; pointer-events: auto; transform: translate(-50%, 6px);
}
.nav-drop-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.nd-card {
    display: flex; align-items: flex-start; gap: 12px;
    padding: 12px; border-radius: 10px; transition: background .2s;
}
.nd-card:hover { background: var(--gray-100); }
.nd-ic {
    flex: none; width: 40px; height: 40px; border-radius: 11px; color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 6px 14px rgba(0, 0, 0, .12);
}
.nd-ic.c1 { background: linear-gradient(135deg, #ffb56b, #f8834a); }
.nd-ic.c2 { background: linear-gradient(135deg, #4ade80, #16a34a); }
.nd-ic.c3 { background: linear-gradient(135deg, #60a5fa, #2563eb); }
.nd-ic.c4 { background: linear-gradient(135deg, #c084fc, #9333ea); }
.nd-ic.c5 { background: linear-gradient(135deg, #22d3ee, #0891b2); }
.nd-ic.c6 { background: linear-gradient(135deg, #fb7185, #e11d48); }
.nd-txt b { display: block; font-size: 14.5px; margin-bottom: 4px; }
.nd-txt i { display: block; font-style: normal; font-size: 12.5px; color: var(--gray-500); line-height: 1.7; }
.nd-all {
    display: block; text-align: center; margin-top: 10px; padding: 9px 0 5px;
    border-top: 1px solid var(--gray-100); color: var(--primary); font-size: 13.5px;
}
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 10px 22px; border-radius: 30px; border: 1px solid transparent; cursor: pointer;
    font-size: 15px; transition: all .25s; white-space: nowrap;
}
.btn-primary { background: var(--grad); color: #fff; box-shadow: 0 4px 14px rgba(43, 107, 243, .3); }
.btn-primary:hover { color: #fff; transform: translateY(-2px); box-shadow: 0 8px 22px rgba(43, 107, 243, .38); }
.btn-outline { border-color: var(--primary); color: var(--primary); background: #fff; }
.btn-outline:hover { background: var(--primary); color: #fff; }
.btn-lg { padding: 14px 34px; font-size: 16px; }
.btn-block { width: 100%; }

.menu-toggle { display: none; width: 40px; height: 40px; border: 0; background: transparent; cursor: pointer; }
.menu-toggle span { display: block; height: 2px; background: var(--gray-900); margin: 6px 0; transition: .3s; border-radius: 2px; }

/* ---------- Banner ---------- */
.slider { position: relative; overflow: hidden; background: #1b1b1b; }
.slider-track { display: flex; transition: transform .6s ease; }
.slide { min-width: 100%; position: relative; height: 420px; display: flex; align-items: center; }
.slide-bg { position: absolute; inset: 0; background: var(--grad); opacity: .95; }
.slide:nth-child(2n) .slide-bg { background: linear-gradient(135deg, #ff512f 0%, #dd2476 100%); }
.slide:nth-child(3n) .slide-bg { background: linear-gradient(135deg, #5ea0ff 0%, #1d4ed8 100%); }
.slide-bg::after {
    content: ''; position: absolute; inset: 0;
    background-image: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, .22) 0, transparent 45%),
                      radial-gradient(circle at 15% 85%, rgba(255, 255, 255, .18) 0, transparent 40%);
}
.slide-inner { position: relative; z-index: 2; color: #fff; max-width: 660px; }
.slide-title { font-size: 40px; font-weight: 800; margin-bottom: 16px; color: #fff; text-shadow: 0 2px 12px rgba(0, 0, 0, .18); }
.slide-sub { font-size: 17px; opacity: .95; margin-bottom: 28px; line-height: 1.9; }
.slide .btn { background: #fff; color: var(--primary); font-weight: 700; }
.slide .btn:hover { color: var(--primary-dark); }
.slider-dots { position: absolute; bottom: 18px; left: 0; right: 0; display: flex; justify-content: center; gap: 8px; z-index: 3; }
.slider-dots i { width: 10px; height: 10px; border-radius: 50%; background: rgba(255, 255, 255, .5); cursor: pointer; transition: .3s; }
.slider-dots i.on { width: 26px; border-radius: 6px; background: #fff; }
.slider-arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3; width: 44px; height: 44px; border-radius: 50%;
    background: rgba(0, 0, 0, .25); color: #fff; display: flex; align-items: center; justify-content: center; cursor: pointer; font-size: 20px;
}
.slider-arrow.prev { left: 16px; }
.slider-arrow.next { right: 16px; }
.slider-arrow:hover { background: rgba(0, 0, 0, .45); }

/* ---------- 通用板块 ---------- */
.section { padding: 64px 0; }
.section-gray { background: var(--gray-100); }
.section-head { text-align: center; margin-bottom: 42px; }
.section-head h2 { font-size: 30px; margin-bottom: 10px; }
.section-head h2 span { color: var(--primary); }
.section-head p { color: var(--gray-700); font-size: 15px; }
.section-head .line { width: 60px; height: 4px; background: var(--grad); border-radius: 3px; margin: 14px auto 0; }

/* ---------- 四大业务（Tab + 手机样机，参照 rrsc.cn） ---------- */
.biz-tabs { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; margin-bottom: 36px; }
.biz-tabs button {
    padding: 10px 24px; border-radius: 22px; border: 1px solid var(--gray-300);
    background: #fff; font-size: 15px; color: var(--gray-900); cursor: pointer; transition: all .25s;
}
.biz-tabs button:hover { color: var(--primary); border-color: rgba(43, 107, 243, .45); }
.biz-tabs button.on { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 6px 16px rgba(43, 107, 243, .28); }
.biz-panel { display: none; align-items: center; gap: 48px; }
.biz-panel.on { display: flex; animation: fadeIn .4s ease; }
.biz-phone { flex: none; width: 280px; }
.phone-frame {
    position: relative; width: 258px; height: 528px; margin: 0 auto; background: #14161a;
    border-radius: 38px; padding: 10px; box-shadow: 0 24px 48px rgba(0, 0, 0, .18);
}
.phone-notch { position: absolute; top: 10px; left: 50%; transform: translateX(-50%); width: 108px; height: 22px; background: #14161a; border-radius: 0 0 14px 14px; z-index: 2; }
.phone-screen { width: 100%; height: 100%; border-radius: 30px; background: var(--grad); overflow: hidden; background-size: cover; background-position: center; }
.phone-mock { padding: 46px 14px 0; }
.biz-detail { flex: 1; min-width: 0; }
.biz-detail h3 { font-size: 26px; margin-bottom: 12px; }
.biz-lead { color: var(--gray-700); font-size: 15px; line-height: 1.9; margin-bottom: 26px; max-width: 660px; }
.biz-feats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; margin-bottom: 28px; }
.bf-card { background: #fff; border: 1px solid var(--gray-300); border-radius: 14px; padding: 22px 20px; transition: all .25s; }
.bf-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.bf-card h4 { font-size: 17px; margin-bottom: 8px; }
.bf-card p { font-size: 13px; color: var(--gray-700); line-height: 1.8; }
.bf-card.hl { background: var(--grad); border-color: transparent; box-shadow: 0 10px 24px rgba(43, 107, 243, .32); }
.bf-card.hl h4 { color: #fff; font-size: 19px; font-weight: 700; }
.bf-card.hl p { color: #fff; font-weight: 600; }

/* ---------- 8大优势 ---------- */
.adv-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.adv-item {
    background: #fff; padding: 26px 18px; text-align: center; border-radius: var(--radius);
    border: 1px solid #f0f0f0; transition: .3s; position: relative; overflow: hidden;
}
.adv-item::before {
    content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 3px; background: var(--grad); transform: scaleX(0); transition: .3s;
}
.adv-item:hover { box-shadow: var(--shadow); }
.adv-item:hover::before { transform: scaleX(1); }
.adv-icon {
    width: 64px; height: 64px; margin: 0 auto 14px; border-radius: 50%; background: var(--grad-soft);
    display: flex; align-items: center; justify-content: center;
}
.adv-icon svg { width: 30px; height: 30px; }
.adv-item h4 { font-size: 16px; margin-bottom: 8px; }
.adv-item p { font-size: 13px; color: var(--gray-700); }

/* ---------- 解决方案 Tab ---------- */
/* ---------- 解决方案（原站版式：图标 Tab + 左文右图） ---------- */
.sol-tabs { display: flex; justify-content: center; gap: 40px; margin-bottom: 40px; flex-wrap: wrap; }
.sol-tabs button {
    display: flex; flex-direction: column; align-items: center; gap: 9px;
    background: transparent; border: 0; cursor: pointer; padding: 4px 2px;
    position: relative; opacity: .5; transition: opacity .28s;
}
.sol-tabs button img { width: 54px; height: 54px; object-fit: contain; transition: transform .3s; }
.sol-tabs button p { font-size: 14.5px; color: var(--gray-900); }
.sol-tabs button::after {
    content: ''; position: absolute; left: 18%; right: 18%; bottom: -12px; height: 3px;
    border-radius: 2px; background: var(--grad); transform: scaleX(0); transition: transform .28s;
}
.sol-tabs button:hover { opacity: .85; }
.sol-tabs button.on { opacity: 1; }
.sol-tabs button.on img { transform: translateY(-4px); }
.sol-tabs button.on p { color: var(--primary); font-weight: 700; }
.sol-tabs button.on::after { transform: scaleX(1); }
.sol-panel { display: none; }
.sol-panel.on { display: block; animation: fadeIn .45s ease; }
.sol-panel dl { display: flex; align-items: center; gap: 52px; }
.sol-panel dd { flex: 1; min-width: 0; }
.sol-panel dt { flex: none; width: 50%; }
.sol-panel dt img { display: block; width: 100%; border-radius: 14px; box-shadow: 0 24px 56px rgba(0, 0, 0, .16); }
.sol-panel dd h3 { font-size: 26px; margin-bottom: 12px; }
.sol-panel dd > p { color: var(--gray-700); font-size: 15px; line-height: 1.9; }
.sol-points { display: grid; grid-template-columns: 1fr 1fr; gap: 16px 20px; margin: 24px 0 28px; }
.sol-points li { display: flex; align-items: center; gap: 11px; font-size: 14.5px; color: var(--gray-900); font-weight: 600; }
.sol-points img { width: 36px; height: 36px; flex: none; }
.sol-cta { display: flex; align-items: center; gap: 10px; }
.sol-cta .btn img { width: 16px; height: 16px; }

/* ---------- 业务应用 ---------- */
.app-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.app-card {
    background: #fff; border-radius: var(--radius); padding: 24px; border: 1px solid #f0f0f0;
    display: flex; gap: 14px; transition: .3s;
}
.app-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-4px); }
.app-card .app-ic { width: 46px; height: 46px; flex: none; border-radius: 12px; background: var(--grad-soft); display: flex; align-items: center; justify-content: center; }
.app-card .app-ic svg { width: 24px; height: 24px; }
.app-card h4 { font-size: 16px; margin-bottom: 6px; }
.app-card p { font-size: 13px; color: var(--gray-700); }

/* ---------- 为什么选择我们 ---------- */
.why-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.why-item { text-align: center; padding: 30px 18px; background: #fff; border-radius: var(--radius); box-shadow: var(--shadow); }
.why-num { font-size: 34px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.why-item h4 { margin: 8px 0 8px; font-size: 17px; }
.why-item p { font-size: 13px; color: var(--gray-700); }

/* ---------- 数据 ---------- */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; text-align: center; }
.stat-item .num { font-size: 40px; font-weight: 800; color: var(--primary); line-height: 1.2; }
.stat-item .num small { font-size: 18px; }
.stat-item p { color: var(--gray-700); font-size: 14px; }

/* ---------- 案例 ---------- */
.case-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.case-item {
    position: relative; border-radius: var(--radius); overflow: hidden; height: 190px;
    background: linear-gradient(135deg, #ff9a44 0%, #fc6076 100%); display: flex; align-items: flex-end; padding: 18px; color: #fff;
    transition: .3s;
}
.case-item:nth-child(2n) { background: linear-gradient(135deg, #5ea0ff 0%, #1d4ed8 100%); }
.case-item:nth-child(3n) { background: linear-gradient(135deg, #ff512f 0%, #dd2476 100%); }
.case-item:nth-child(4n) { background: linear-gradient(135deg, #ff9966 0%, #ff5e62 100%); }
.case-item:hover { transform: translateY(-6px); box-shadow: 0 16px 30px rgba(0, 0, 0, .18); }
.case-item h4 { color: #fff; font-size: 17px; }
.case-item p { font-size: 13px; opacity: .9; }

/* ---------- 合作伙伴 ---------- */
.partners { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; }
.partner-item {
    height: 70px; background: #fff; border: 1px solid #eee; border-radius: 8px; display: flex; align-items: center; justify-content: center;
    color: var(--gray-500); font-size: 14px; transition: .3s;
}
.partner-item:hover { border-color: var(--primary); color: var(--primary); }

/* ---------- 资讯 ---------- */
.news-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.news-item { background: #fff; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); transition: .3s; border: 1px solid #f3f3f3; }
.news-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.news-thumb { height: 150px; background: var(--grad-soft); display: flex; align-items: center; justify-content: center; color: var(--primary); font-size: 40px; font-weight: 800; }
.news-body { padding: 18px; }
.news-body h3 { font-size: 16px; margin-bottom: 8px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; height: 46px; }
.news-body p { font-size: 13px; color: var(--gray-700); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; height: 46px; }
.news-meta { display: flex; justify-content: space-between; font-size: 12px; color: var(--gray-500); margin-top: 12px; }

/* 新闻列表页 */
.list-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 28px; }

/* ---------- 列表页分类 Tab ---------- */
.cat-tabs { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 38px; }
.cat-tabs a { padding: 9px 26px; border-radius: 999px; background: #fff; border: 1px solid #ececec; color: #555; font-size: 15px; transition: .25s; }
.cat-tabs a:hover { color: var(--primary); border-color: var(--primary); }
.cat-tabs a.on { background: var(--grad); color: #fff; border-color: transparent; box-shadow: 0 8px 18px rgba(43, 107, 243, .28); }

/* ---------- 产品中心大卡 ---------- */
.product-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }

/* ---------- 解决方案卡片（列表页，配图来自原站落地页 Banner） ---------- */
.solgrid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.solcard {
    background: #fff; border-radius: 14px; overflow: hidden; border: 1px solid #eef1f6;
    box-shadow: 0 4px 16px rgba(30, 50, 90, .06); transition: all .3s cubic-bezier(.22, .61, .36, 1);
    display: flex; flex-direction: column;
}
.solcard:hover { transform: translateY(-6px); box-shadow: 0 14px 30px rgba(30, 50, 90, .13); border-color: rgba(43, 107, 243, .35); }
.solcard-cover { height: 190px; overflow: hidden; background: var(--grad-soft); }
.solcard-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; display: block; }
.solcard:hover .solcard-cover img { transform: scale(1.05); }
.solcard-body { padding: 20px 22px 22px; flex: 1; display: flex; flex-direction: column; }
.solcard-body h3 { font-size: 17px; margin-bottom: 10px; }
.solcard-body p { font-size: 13.5px; color: var(--gray-700); line-height: 1.8; flex: 1; }
.solcard-body .more { margin-top: 14px; color: var(--primary); font-size: 14px; display: inline-flex; align-items: center; gap: 4px; }
.product-card { display: flex; gap: 20px; background: #fff; border: 1px solid #f3f3f3; border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: .3s; }
.product-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(43, 107, 243, .35); }
.product-icon { flex: 0 0 64px; width: 64px; height: 64px; border-radius: 16px; background: var(--grad-soft); display: flex; align-items: center; justify-content: center; }
.product-body { min-width: 0; }
.product-body h3 { font-size: 18px; margin-bottom: 6px; }
.product-body .product-sub { color: var(--primary); font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.product-body .product-desc { font-size: 14px; color: var(--gray-700); line-height: 1.7; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.product-body .more { display: inline-flex; align-items: center; gap: 6px; margin-top: 12px; color: var(--primary); font-size: 14px; font-weight: 600; }
.product-card:hover .more { gap: 10px; }

.list-main .list-item { display: flex; gap: 18px; padding: 20px 0; border-bottom: 1px dashed #eee; }
.list-item .li-thumb { width: 180px; height: 116px; flex: none; border-radius: 8px; overflow: hidden; background: var(--grad-soft); display: flex; align-items: center; justify-content: center; color: var(--primary); }
.list-item .li-body h3 { font-size: 17px; margin-bottom: 8px; }
.list-item .li-body p { font-size: 14px; color: var(--gray-700); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.list-item .li-meta { font-size: 12px; color: var(--gray-500); margin-top: 10px; }

/* 侧边栏 */
.sidebar .side-box { background: #fff; border-radius: var(--radius); padding: 20px; margin-bottom: 20px; box-shadow: var(--shadow); }
.side-box h4 { font-size: 16px; margin-bottom: 14px; padding-left: 10px; border-left: 4px solid var(--primary); }
.side-list li { padding: 8px 0; border-bottom: 1px dashed #f0f0f0; font-size: 14px; }
.side-list li:last-child { border: 0; }
.side-list li a { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* 面包屑 */
.breadcrumb { background: var(--gray-100); padding: 14px 0; font-size: 13px; color: var(--gray-700); }
.breadcrumb a { color: var(--gray-700); }
.breadcrumb span { margin: 0 6px; color: var(--gray-300); }

/* 文章详情 */
.article-wrap { display: grid; grid-template-columns: 1fr 300px; gap: 28px; padding: 30px 0 50px; }
.article-main { background: #fff; border-radius: var(--radius); padding: 30px; box-shadow: var(--shadow); }
.article-title { font-size: 26px; margin-bottom: 14px; }
.article-meta { font-size: 13px; color: var(--gray-500); border-bottom: 1px solid #f0f0f0; padding-bottom: 14px; margin-bottom: 20px; }
.article-content { font-size: 16px; line-height: 1.9; color: #3a3a3a; }
.article-content h2 { font-size: 21px; margin: 26px 0 14px; padding-left: 12px; border-left: 4px solid var(--primary); }
.article-content h3 { font-size: 18px; margin: 20px 0 10px; }
.article-content p { margin-bottom: 14px; }
.article-content ul, .article-content ol { margin: 0 0 16px 22px; }
.article-content ul li { list-style: disc; margin-bottom: 6px; }
.article-content ol li { list-style: decimal; margin-bottom: 6px; }
.article-content blockquote {
    background: var(--grad-soft); border-left: 4px solid var(--primary); padding: 14px 18px; margin: 18px 0; border-radius: 0 8px 8px 0; color: #6a4a20;
}
.article-content table { width: 100%; border-collapse: collapse; margin: 16px 0; font-size: 14px; }
.article-content th, .article-content td { border: 1px solid #eee; padding: 10px 12px; text-align: left; }
.article-content th { background: var(--gray-100); }
.article-content strong { color: var(--primary-dark); }
.faq-box { margin-top: 30px; background: var(--gray-100); border-radius: var(--radius); padding: 22px; }
.faq-box h3 { font-size: 18px; margin-bottom: 14px; }
.faq-item { background: #fff; border-radius: 8px; padding: 14px 16px; margin-bottom: 10px; }
.faq-item .q { font-weight: 700; margin-bottom: 6px; color: var(--dark); }
.faq-item .a { font-size: 14px; color: var(--gray-700); }
.article-nav { display: flex; justify-content: space-between; margin-top: 26px; padding-top: 18px; border-top: 1px dashed #eee; font-size: 14px; }

/* 分页 */
.pagination { display: flex; gap: 8px; align-items: center; justify-content: center; margin: 30px 0; flex-wrap: wrap; }
.pagination .page-link { padding: 8px 14px; border: 1px solid var(--gray-300); border-radius: 6px; font-size: 14px; background: #fff; }
.pagination .page-link.active { background: var(--grad); color: #fff; border-color: transparent; }
.pagination .page-link.disabled { opacity: .45; cursor: not-allowed; }
.pagination .page-total { font-size: 13px; color: var(--gray-500); margin-left: 8px; }

/* ---------- 表单 ---------- */
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 14px; margin-bottom: 6px; color: var(--gray-700); }
.form-control {
    width: 100%; height: 44px; padding: 0 14px; border: 1px solid var(--gray-300); border-radius: 6px; transition: .2s; background: #fff;
}
.form-control:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(43, 107, 243, .12); }
textarea.form-control { height: 120px; padding: 10px 14px; resize: vertical; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; }
.contact-info li { padding: 12px 0; border-bottom: 1px dashed #eee; display: flex; gap: 10px; font-size: 15px; }
.contact-info li b { color: var(--gray-700); font-weight: 400; min-width: 70px; }

/* ---------- 页脚 ---------- */
.footer { background: #262626; color: #aaa; padding: 46px 0 0; font-size: 14px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.2fr; gap: 30px; padding-bottom: 30px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 16px; }
.footer li { padding: 5px 0; }
.footer li a:hover { color: var(--primary); }
.footer .logo { color: #fff; margin-bottom: 12px; }
.footer p { font-size: 13px; line-height: 1.9; }
.footer-bottom { border-top: 1px solid #3a3a3a; padding: 16px 0; text-align: center; font-size: 13px; color: #777; }
.friend-links { display: flex; flex-wrap: wrap; gap: 10px 16px; margin-bottom: 14px; }
.friend-links a { color: #999; font-size: 13px; }

/* 悬浮客服 */
.float-kefu { position: fixed; right: 16px; bottom: 80px; z-index: 998; display: flex; flex-direction: column; gap: 10px; }
.float-kefu a, .float-kefu .gotop, .float-kefu .fk-btn {
    width: 52px; height: 52px; border-radius: 50%; background: #fff; box-shadow: 0 4px 16px rgba(0, 0, 0, .16);
    display: flex; align-items: center; justify-content: center; color: var(--primary); cursor: pointer; font-size: 22px;
}
.float-kefu .gotop { font-size: 18px; }
.float-kefu a:hover, .float-kefu .gotop:hover, .float-kefu .fk-btn:hover { background: var(--grad); color: #fff; }

/* 移动端底部工具条 */
.mobile-bar { display: none; position: fixed; left: 0; right: 0; bottom: 0; z-index: 1000; background: #fff; box-shadow: 0 -2px 12px rgba(0, 0, 0, .1); }
.mobile-bar .mb-item { flex: 1; text-align: center; padding: 8px 0 6px; font-size: 12px; color: var(--gray-700); }
.mobile-bar .mb-item.on { color: var(--primary); }
.mobile-bar .mb-item i { display: block; font-size: 18px; margin-bottom: 2px; font-style: normal; }

/* 空状态 */
.empty { text-align: center; padding: 60px 0; color: var(--gray-500); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }
.fade-up { animation: fadeIn .6s ease both; }

/* ===================== 动效增强（参照原站观感） ===================== */
html { scroll-behavior: smooth; }

/* 滚动进场：仅在 JS 可用时隐藏，避免脚本失效导致内容不可见 */
.js-anim .reveal {
    opacity: 0; transform: translateY(28px);
    transition: opacity .75s cubic-bezier(.22, .61, .36, 1), transform .75s cubic-bezier(.22, .61, .36, 1);
    transition-delay: var(--d, 0ms); will-change: opacity, transform;
}
.js-anim .reveal.in { opacity: 1; transform: none; }

/* 顶部滚动进度条 */
.scroll-progress {
    position: fixed; top: 0; left: 0; height: 3px; width: 0; z-index: 1001;
    background: var(--grad); transition: width .12s linear; pointer-events: none;
}

/* 吸顶导航：滚动后加深阴影、高度收紧 */
.header { transition: background .3s, box-shadow .3s; }
.header-inner { transition: height .3s cubic-bezier(.22, .61, .36, 1); }
.header.scrolled { background: rgba(255, 255, 255, .98); box-shadow: 0 6px 26px rgba(0, 0, 0, .12); }
.header.scrolled .header-inner { height: calc(var(--header-h) - 10px); }

/* Banner 缓慢推近（Ken Burns） */
.slide-bg { transform-origin: center center; }
.slide.active .slide-bg { animation: kenburns 7s ease-out both; }
@keyframes kenburns { from { transform: scale(1.02); } to { transform: scale(1.12); } }
.slide.active .slide-inner > * { animation: slideUp .8s cubic-bezier(.22, .61, .36, 1) both; }
.slide.active .slide-inner > *:nth-child(2) { animation-delay: .12s; }
.slide.active .slide-inner > *:nth-child(3) { animation-delay: .24s; }
@keyframes slideUp { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

/* 手机样机：缓慢上下浮动 + hover 上抬（演示图自带手机外框，直接平铺） */
.biz-phone { transition: transform .45s cubic-bezier(.22, .61, .36, 1); }
.biz-phone:hover { transform: translateY(-8px); }
.phone-frame, .phone-demo { animation: phoneFloat 6.5s ease-in-out infinite; }
.phone-demo {
    display: block; width: 258px; height: auto; margin: 0 auto;
    filter: drop-shadow(0 24px 44px rgba(0, 0, 0, .16));
}
@keyframes phoneFloat { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.phone-screen { position: relative; }

/* Tab 面板：标题/简介/特性卡错峰入场（display 切换自动重放） */
@keyframes cardIn { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: none; } }
.biz-panel.on .biz-detail h3 { animation: cardIn .5s cubic-bezier(.22, .61, .36, 1) both; }
.biz-panel.on .biz-lead { animation: cardIn .5s cubic-bezier(.22, .61, .36, 1) .08s both; }
.biz-panel.on .bf-card { animation: cardIn .55s cubic-bezier(.22, .61, .36, 1) both; }
.biz-panel.on .bf-card:nth-child(2) { animation-delay: .12s; }
.biz-panel.on .bf-card:nth-child(3) { animation-delay: .24s; }
.biz-panel.on .biz-detail .btn { animation: cardIn .5s cubic-bezier(.22, .61, .36, 1) .34s both; }
.sol-panel.on dd h3 { animation: cardIn .5s both; }
.sol-panel.on dd > p { animation: cardIn .5s .08s both; }
.sol-panel.on .sol-points li { animation: cardIn .5s cubic-bezier(.22, .61, .36, 1) both; }
.sol-panel.on .sol-points li:nth-child(2) { animation-delay: .08s; }
.sol-panel.on .sol-points li:nth-child(3) { animation-delay: .16s; }
.sol-panel.on .sol-points li:nth-child(4) { animation-delay: .24s; }
.sol-panel.on .sol-cta { animation: cardIn .5s .32s both; }
.sol-panel.on dt { animation: cardIn .6s .1s both; }

/* Tab 胶囊点击微动 */
.biz-tabs button, .sol-tabs button { transition: all .28s cubic-bezier(.22, .61, .36, 1); }
.biz-tabs button:active, .sol-tabs button:active { transform: scale(.96); }

/* 尊重系统「减少动画」设置 */
@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .js-anim .reveal { opacity: 1 !important; transform: none !important; transition: none !important; }
    .phone-frame, .phone-demo, .slide-bg, .slide-inner > *,
    .biz-panel.on .bf-card, .biz-panel.on .biz-detail h3, .sol-panel.on .sol-points li { animation: none !important; }
}

/* ========================= 响应式 ========================= */
@media (max-width: 1024px) {
    .biz-grid, .adv-grid, .why-grid { grid-template-columns: repeat(2, 1fr); }
    .case-grid { grid-template-columns: repeat(3, 1fr); }
    .partners { grid-template-columns: repeat(4, 1fr); }
    .list-wrap, .article-wrap { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: repeat(2, 1fr); }
    .slide-title { font-size: 32px; }
}

@media (max-width: 768px) {
    body { font-size: 14px; padding-bottom: 56px; }
    .topbar { display: none; }
    .header-inner { height: 56px; justify-content: space-between; }
    .logo { font-size: 18px; }
    .logo-mark { width: 32px; height: 32px; font-size: 15px; }
    .menu-toggle { display: block; }
    .header-cta { display: none; }
    .nav {
        position: fixed; top: 56px; left: 0; right: 0; background: #fff; box-shadow: 0 8px 20px rgba(0, 0, 0, .12);
        max-height: 0; overflow: hidden; transition: max-height .3s ease; margin: 0;
    }
    .nav.open { max-height: 70vh; overflow-y: auto; }
    .nav ul { flex-direction: column; padding: 8px 0; gap: 0; }
    .nav ul li a { padding: 13px 20px; border-bottom: 1px solid #f5f5f5; border-radius: 0; }
    .nav ul li a.active::after { display: none; }
    .nav ul li.has-drop > a::after { display: none; }
    .nav ul li.has-drop .nav-drop { display: none; }
    .slide { height: 300px; }
    .slide-title { font-size: 24px; }
    .slide-sub { font-size: 14px; margin-bottom: 20px; }
    .slider-arrow { display: none; }
    .section { padding: 40px 0; }
    .section-head h2 { font-size: 22px; }
    .biz-grid, .adv-grid, .why-grid, .case-grid, .app-grid, .news-grid, .stats { grid-template-columns: repeat(2, 1fr); gap: 12px; }
    .biz-panel.on { flex-direction: column; gap: 26px; }
    .biz-phone { width: 220px; }
    .phone-frame { width: 200px; height: 412px; border-radius: 32px; }
    .phone-screen { border-radius: 26px; }
    .phone-demo { width: 210px; }
    .biz-feats { grid-template-columns: 1fr; }
    .biz-detail h3 { font-size: 21px; }
    .partners { grid-template-columns: repeat(3, 1fr); }
    .sol-panel.on dl { flex-direction: column; gap: 26px; }
    .sol-panel dd { width: 100%; }
    .sol-panel dt { width: 100%; order: -1; }
    .sol-points { grid-template-columns: 1fr 1fr; gap: 12px; }
    .product-grid { grid-template-columns: 1fr; gap: 14px; }
    .solgrid { grid-template-columns: 1fr; gap: 16px; }
    .product-card { padding: 20px; gap: 14px; }
    .list-item { flex-direction: column; }
    .list-item .li-thumb { width: 100%; height: 170px; }
    .contact-grid { grid-template-columns: 1fr; gap: 24px; }
    .article-main { padding: 20px; }
    .article-title { font-size: 20px; }
    .article-content { font-size: 15px; }
    .footer-grid { grid-template-columns: 1fr; gap: 20px; }
    .mobile-bar { display: flex; }
    .float-kefu { bottom: 70px; }
    .float-kefu a, .float-kefu .gotop, .float-kefu .fk-btn { width: 44px; height: 44px; font-size: 18px; }
}

@media (max-width: 480px) {
    .biz-grid, .adv-grid, .why-grid, .case-grid, .app-grid, .news-grid, .stats { grid-template-columns: 1fr; }
    .partners { grid-template-columns: repeat(2, 1fr); }
    .slide { height: 260px; }
}

/* ===================== 城市分站（多城市 SEO / GEO） ===================== */
.city-hero { padding: 72px 0; }
.city-hero .slide-bg { background: linear-gradient(135deg, #4a8cff 0%, #2563eb 100%) !important; }
.city-hero .slide-inner { max-width: var(--maxw); color: #fff; }
.city-tag { display: inline-block; background: rgba(255, 255, 255, .18); border: 1px solid rgba(255, 255, 255, .35); color: #fff; padding: 6px 14px; border-radius: 30px; font-size: 13px; margin-bottom: 18px; }
.city-hero .slide-title span { color: #fff; opacity: .92; font-weight: 600; }
.city-hero-btns { margin-top: 26px; display: flex; gap: 14px; flex-wrap: wrap; }
.city-hero .btn { background: #fff; color: var(--primary); font-weight: 700; }
.city-hero .btn:hover { color: var(--primary-dark); }
.city-hero .btn-outline-light { background: transparent; color: #fff; border: 2px solid rgba(255, 255, 255, .8); }
.city-hero .btn-outline-light:hover { background: rgba(255, 255, 255, .15); color: #fff; }

.city-channels { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.city-channel { display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 24px 12px; background: #fff; border: 1px solid var(--gray-300); border-radius: var(--radius); box-shadow: var(--shadow); transition: .25s; }
.city-channel:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }
.city-channel-ic { width: 56px; height: 56px; border-radius: 14px; background: var(--grad-soft); display: flex; align-items: center; justify-content: center; color: var(--primary); }
.city-channel span { font-weight: 600; }

.city-intro { max-width: 880px; margin: 0 auto; }
.city-intro h2 { font-size: 22px; margin: 18px 0 10px; color: var(--gray-900); }
.city-intro ul { padding-left: 20px; }
.city-intro li { margin: 6px 0; }
.city-intro p { margin: 8px 0; color: var(--gray-700); }

.city-cta { display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; background: var(--grad); color: #fff; padding: 34px 36px; border-radius: 16px; box-shadow: var(--shadow); }
.city-cta h3 { color: #fff; margin-bottom: 8px; }
.city-cta p { opacity: .95; }

/* 顶部城市分站导航条 */
.city-bar { background: #fff; border-bottom: 1px solid var(--gray-300); }
.city-bar .container { display: flex; align-items: center; gap: 10px; padding: 8px 0; overflow-x: auto; white-space: nowrap; }
.city-bar .cb-label { font-size: 13px; color: var(--gray-500); flex: none; }
.city-bar a { font-size: 13px; padding: 4px 12px; border-radius: 20px; background: var(--gray-100); color: var(--gray-700); flex: none; }
.city-bar a:hover, .city-bar a.on { background: var(--primary); color: #fff; }

.city-tip { background: var(--grad-soft); border-bottom: 1px solid #ffe0cc; }
.city-tip .container { padding: 10px 0; font-size: 13px; color: var(--gray-700); }
.city-tip b { color: var(--primary); }
.city-tip a { color: var(--primary); font-weight: 600; }

@media (max-width: 768px) {
    .city-hero { padding: 48px 0; }
    .city-channels { grid-template-columns: repeat(2, 1fr); }
    .city-cta { flex-direction: column; align-items: flex-start; padding: 24px; }
}

/* ===================== 右侧悬浮窗：电话 / 二维码弹层 ===================== */
.fk-item { position: relative; display: flex; }
.fk-pop {
    position: absolute; right: 64px; top: 50%;
    transform: translateY(-50%) translateX(10px);
    background: #fff; border-radius: 12px; box-shadow: 0 8px 28px rgba(0, 0, 0, .18);
    padding: 14px 20px; white-space: nowrap; text-align: center;
    opacity: 0; visibility: hidden; transition: opacity .22s ease, transform .22s ease, visibility .22s;
    z-index: 999; pointer-events: none;
}
.fk-pop::after {
    content: ''; position: absolute; right: -5px; top: 50%; margin-top: -5px;
    width: 10px; height: 10px; background: #fff; transform: rotate(45deg);
}
.fk-item:hover .fk-pop, .fk-item.open .fk-pop, .fk-item:focus-within .fk-pop {
    opacity: 1; visibility: visible; transform: translateY(-50%) translateX(0);
}
.fk-pop-label { font-size: 12px; color: var(--gray-500); margin-bottom: 2px; }
.fk-pop-tel { font-size: 20px; font-weight: 800; color: var(--primary); letter-spacing: .5px; }
.fk-pop-hint { font-size: 12px; color: var(--gray-500); margin-top: 4px; }
.fk-pop-qr { padding: 14px; }
.fk-pop-qr img { display: block; width: 140px; height: 140px; object-fit: contain; border-radius: 8px; background: var(--gray-100); }
.fk-pop-qr p { font-size: 12px; color: var(--gray-700); margin-top: 8px; }