@charset "UTF-8";
/* ==========================================================================
   重庆赛海科技有限公司 官网前台样式
   设计基调：简约大气 —— 大留白、克制的配色、清晰的层级、无装饰性冗余
   约定：全部自托管，不引用任何 CDN 资源；图片缺失时以渐变 + 图标占位，杜绝破图
   ========================================================================== */

:root {
    --c-primary: #0e4d92;
    --c-primary-dark: #0a3a70;
    --c-primary-light: #1f6ec4;
    --c-primary-50: #eef4fc;
    --c-primary-100: #dbe8f8;
    --c-accent: #0aa2a8;
    --c-accent-dark: #078187;

    --c-text: #1e2733;
    --c-text-2: #5a6675;
    --c-text-3: #8a949f;
    --c-white: #ffffff;
    --c-bg: #ffffff;
    --c-bg-soft: #f5f8fc;
    --c-bg-dark: #0d2440;
    --c-border: #e4e9f0;
    --c-border-light: #eef1f6;

    --radius: 6px;
    --radius-lg: 10px;
    --shadow-sm: 0 2px 8px rgba(16, 42, 74, .06);
    --shadow: 0 6px 24px rgba(16, 42, 74, .09);
    --shadow-lg: 0 16px 44px rgba(16, 42, 74, .14);

    --header-h: 76px;
    --container: 1200px;
    --ease: cubic-bezier(.4, 0, .2, 1);
}

/* -------------------------------- 基础重置 -------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 15px;
    line-height: 1.75;
    color: var(--c-text);
    background: var(--c-bg);
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, p, ul, ol, dl, dd, figure { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img { max-width: 100%; border: 0; vertical-align: middle; }
a { color: inherit; text-decoration: none; transition: color .2s var(--ease); }
a:hover { color: var(--c-primary); }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
table { border-collapse: collapse; width: 100%; }

.container {
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 24px;
}

.ico { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.ico-lg { width: 30px; height: 30px; }
.ico-sm { width: 16px; height: 16px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }

/* -------------------------------- 顶部信息条 -------------------------------- */
.topbar {
    background: var(--c-primary-dark);
    color: rgba(255, 255, 255, .82);
    font-size: 13px;
    line-height: 38px;
}

.topbar .container { display: flex; align-items: center; justify-content: space-between; }
.topbar-left { display: flex; align-items: center; gap: 8px; }
.topbar-right { display: flex; align-items: center; gap: 22px; }
.topbar-right a:hover { color: #fff; }
.topbar-item { display: inline-flex; align-items: center; gap: 6px; }
.topbar .ico { width: 15px; height: 15px; }

/* -------------------------------- 头部导航 -------------------------------- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-h);
    background: rgba(255, 255, 255, .96);
    backdrop-filter: saturate(180%) blur(8px);
    border-bottom: 1px solid var(--c-border-light);
}

.header .container { display: flex; align-items: center; height: 100%; }

.logo { display: flex; align-items: center; gap: 12px; flex: none; }
.logo-mark {
    width: 42px; height: 42px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 8px;
    background: linear-gradient(135deg, var(--c-primary) 0%, var(--c-accent) 100%);
    color: #fff;
    box-shadow: 0 4px 12px rgba(14, 77, 146, .28);
}
.logo-mark svg { width: 26px; height: 26px; }
.logo-img { height: 42px; width: auto; }
.logo-text { display: flex; flex-direction: column; line-height: 1.25; }
.logo-name { font-size: 20px; font-weight: 700; letter-spacing: .5px; color: var(--c-text); }
.logo-sub { font-size: 11px; color: var(--c-text-3); letter-spacing: 2.4px; text-transform: uppercase; }

.nav { margin-left: auto; display: flex; align-items: center; height: 100%; }
.nav-list { display: flex; align-items: center; height: 100%; }
.nav-list > li { position: relative; height: 100%; }
.nav-list > li > a {
    display: flex; align-items: center; height: 100%;
    padding: 0 20px;
    font-size: 15.5px;
    color: var(--c-text);
    position: relative;
}
.nav-list > li > a::after {
    content: ""; position: absolute; left: 20px; right: 20px; bottom: 18px; height: 2px;
    background: var(--c-primary); transform: scaleX(0); transform-origin: center;
    transition: transform .26s var(--ease);
}
.nav-list > li > a:hover::after, .nav-list > li.active > a::after { transform: scaleX(1); }
.nav-list > li.active > a { color: var(--c-primary); font-weight: 600; }

.header-tools { display: flex; align-items: center; gap: 6px; margin-left: 14px; }
.icon-btn {
    width: 38px; height: 38px; border: 0; background: transparent; color: var(--c-text-2);
    border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
    transition: background .2s var(--ease), color .2s var(--ease);
}
.icon-btn:hover { background: var(--c-primary-50); color: var(--c-primary); }
.nav-toggle { display: none; }

/* 搜索抽屉 */
.search-panel {
    position: absolute; left: 0; right: 0; top: 100%;
    background: #fff; border-bottom: 1px solid var(--c-border);
    box-shadow: var(--shadow); padding: 22px 0;
    display: none;
}
.search-panel.open { display: block; }
.search-form { display: flex; gap: 10px; }
.search-form input {
    flex: 1; height: 46px; padding: 0 16px;
    border: 1px solid var(--c-border); border-radius: var(--radius);
    outline: none; transition: border-color .2s var(--ease);
}
.search-form input:focus { border-color: var(--c-primary); }

/* -------------------------------- 按钮 -------------------------------- */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    height: 46px; padding: 0 28px;
    border: 1px solid transparent; border-radius: var(--radius);
    font-size: 15px; font-weight: 500; white-space: nowrap;
    transition: all .24s var(--ease);
}
.btn-primary { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }
.btn-primary:hover { background: var(--c-primary-dark); border-color: var(--c-primary-dark); color: #fff; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(14, 77, 146, .3); }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .6); }
.btn-ghost:hover { background: rgba(255, 255, 255, .14); border-color: #fff; color: #fff; }
.btn-line { background: #fff; color: var(--c-primary); border-color: var(--c-primary); }
.btn-line:hover { background: var(--c-primary); color: #fff; }
.btn-sm { height: 38px; padding: 0 18px; font-size: 14px; }
.btn-block { width: 100%; }

.link-more { display: inline-flex; align-items: center; gap: 6px; color: var(--c-primary); font-size: 14.5px; }
.link-more .ico { width: 16px; height: 16px; transition: transform .22s var(--ease); }
.link-more:hover .ico { transform: translateX(4px); }

/* -------------------------------- 首页轮播 -------------------------------- */
.hero { position: relative; height: 540px; overflow: hidden; background: var(--c-bg-dark); }
.hero-slide {
    position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0;
    display: flex; align-items: center;
    opacity: 0; visibility: hidden;
    transition: opacity .8s var(--ease);
    background-size: cover; background-position: center;
}
.hero-slide.active { opacity: 1; visibility: visible; }
.hero-slide::before { content: ""; position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; background: linear-gradient(90deg, rgba(6, 24, 46, .78) 0%, rgba(6, 24, 46, .35) 62%, rgba(6, 24, 46, .12) 100%); }
.hero-theme-blue { background-image: linear-gradient(120deg, #0b3d75 0%, #1470b8 55%, #0aa2a8 100%); }
.hero-theme-indigo { background-image: linear-gradient(120deg, #17203f 0%, #2b3b76 60%, #4a63b5 100%); }
.hero-theme-teal { background-image: linear-gradient(120deg, #063f43 0%, #0a7f86 55%, #37b4a4 100%); }
.hero-theme-dark { background-image: linear-gradient(120deg, #12181f 0%, #263440 60%, #3f5666 100%); }
.hero-slide[style*="background-image"]::before { background: linear-gradient(90deg, rgba(6, 24, 46, .82) 0%, rgba(6, 24, 46, .5) 60%, rgba(6, 24, 46, .28) 100%); }

.hero-inner { position: relative; z-index: 2; color: #fff; max-width: 680px; }
.hero-tag {
    display: inline-flex; align-items: center; gap: 8px;
    height: 30px; padding: 0 14px; margin-bottom: 22px;
    border: 1px solid rgba(255, 255, 255, .4); border-radius: 999px;
    font-size: 13px; letter-spacing: 1px;
}
.hero-title { font-size: 46px; line-height: 1.24; font-weight: 700; letter-spacing: 1px; margin-bottom: 18px; }
.hero-desc { font-size: 17px; line-height: 1.85; color: rgba(255, 255, 255, .86); margin-bottom: 32px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-dots { position: absolute; left: 0; right: 0; bottom: 30px; z-index: 3; display: flex; justify-content: center; gap: 10px; }
.hero-dots button {
    width: 30px; height: 4px; border: 0; padding: 0; border-radius: 2px;
    background: rgba(255, 255, 255, .42); transition: background .2s var(--ease), width .2s var(--ease);
}
.hero-dots button.active { background: #fff; width: 44px; }
.hero-arrow {
    position: absolute; top: 50%; transform: translateY(-50%); z-index: 3;
    width: 46px; height: 46px; border: 1px solid rgba(255, 255, 255, .34); border-radius: 50%;
    background: rgba(255, 255, 255, .08); color: #fff;
    display: flex; align-items: center; justify-content: center;
    transition: background .2s var(--ease);
}
.hero-arrow:hover { background: rgba(255, 255, 255, .24); }
.hero-prev { left: 28px; }
.hero-next { right: 28px; }

/* -------------------------------- 区块通用 -------------------------------- */
.section { padding: 84px 0; }
.section-soft { background: var(--c-bg-soft); }
.section-dark { background: var(--c-bg-dark); color: rgba(255, 255, 255, .82); }
.section-tight { padding: 60px 0; }

.section-head { text-align: center; margin-bottom: 30px; }
.section-head .eyebrow {
    display: block; font-size: 12px; letter-spacing: 3px; text-transform: uppercase;
    color: var(--c-accent); margin-bottom: 8px;
}
.section-head h2 { font-size: 30px; font-weight: 700; letter-spacing: .5px; margin-bottom: 10px; }
.section-head p { color: var(--c-text-2); max-width: 720px; margin: 0 auto; }
.section-dark .section-head h2 { color: #fff; }
.section-dark .section-head p { color: rgba(255, 255, 255, .68); }
.section-head-left { text-align: left; display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; }
.section-head-left p { margin: 0; }

.grid { display: grid; gap: 24px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* -------------------------------- 业务板块卡片 -------------------------------- */
.biz-card {
    background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
    padding: 34px 30px; transition: all .3s var(--ease); height: 100%;
    display: flex; flex-direction: column;
}
.biz-card:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.biz-icon {
    width: 56px; height: 56px; border-radius: 12px; margin-bottom: 20px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-primary-50); color: var(--c-primary);
}
.biz-card:hover .biz-icon { background: var(--c-primary); color: #fff; }
.biz-card h3 { font-size: 20px; margin-bottom: 10px; }
.biz-card .biz-desc { color: var(--c-text-2); font-size: 14.5px; margin-bottom: 18px; min-height: 48px; }
.biz-list { margin-bottom: 20px; }
.biz-list li { display: flex; align-items: center; gap: 8px; padding: 6px 0; font-size: 14.5px; color: var(--c-text-2); border-bottom: 1px dashed var(--c-border-light); }
.biz-list li:last-child { border-bottom: 0; }
.biz-list li .ico { color: var(--c-accent); width: 15px; height: 15px; }
.biz-list li a:hover { color: var(--c-primary); }
.biz-card .link-more { margin-top: auto; }
.biz-empty { color: var(--c-text-3); font-size: 14px; padding: 10px 0 18px; }

/* -------------------------------- 关于 + 数据 -------------------------------- */
.about-row { display: grid; grid-template-columns: 1.05fr .95fr; gap: 60px; align-items: center; }
.about-text .eyebrow { display: block; font-size: 13px; letter-spacing: 3px; color: var(--c-accent); text-transform: uppercase; margin-bottom: 12px; }
.about-text h2 { font-size: 32px; font-weight: 700; margin-bottom: 20px; }
.about-text .lead { color: var(--c-text-2); font-size: 15.5px; line-height: 1.95; margin-bottom: 26px; }
.about-visual { position: relative; }
.about-visual svg,
.about-visual img { width: 100%; height: auto; display: block; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.about-visual .rich { width: 100%; }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-top: 34px; }
.stat-item { text-align: center; padding: 18px 10px; background: var(--c-bg-soft); border-radius: var(--radius); }
.section-soft .stat-item { background: #fff; }
.stat-num { font-size: 32px; font-weight: 700; color: var(--c-primary); line-height: 1.2; }
.stat-num small { font-size: 16px; margin-left: 2px; }
.stat-label { font-size: 13.5px; color: var(--c-text-2); margin-top: 4px; }

/* -------------------------------- 产品卡片 -------------------------------- */
.pcard {
    background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg);
    overflow: hidden; display: flex; flex-direction: column; height: 100%;
    transition: all .3s var(--ease);
}
.pcard:hover { transform: translateY(-6px); box-shadow: var(--shadow); border-color: transparent; }
.pcard-cover { position: relative; height: 176px; overflow: hidden; }
.pcard-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.pcard:hover .pcard-cover img { transform: scale(1.06); }
.pcard-body { padding: 22px 24px 26px; display: flex; flex-direction: column; flex: 1; }
.pcard-cat { font-size: 12.5px; color: var(--c-accent); letter-spacing: .5px; margin-bottom: 8px; }
.pcard h3 { font-size: 18.5px; margin-bottom: 10px; }
.pcard h3 a:hover { color: var(--c-primary); }
.pcard p { color: var(--c-text-2); font-size: 14px; line-height: 1.8; margin-bottom: 16px; flex: 1; }
.pcard .link-more { font-size: 14px; }

.tag-badge {
    position: absolute; top: 14px; left: 14px; z-index: 2;
    height: 26px; padding: 0 12px; border-radius: 999px;
    background: rgba(14, 77, 146, .92); color: #fff; font-size: 12.5px;
    display: inline-flex; align-items: center;
}
.tag-badge.plan { background: rgba(122, 132, 145, .92); }
.tag-badge.hot { background: rgba(214, 69, 69, .92); }

/* 图片缺失时的渐变占位（避免破图） */
.ph { position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0; display: flex; align-items: center; justify-content: center; color: rgba(255, 255, 255, .92); }
.ph svg { width: 54px; height: 54px; stroke-width: 1.3; }
/* 长页 Hero 专用 — 当封面图未上传时，显示引导文字 */
.ph.ph-empty { flex-direction: column; gap: 10px; }
.ph.ph-empty svg { width: 68px; height: 68px; opacity: .9; }
.ph-empty-tip { font-size: 13px; line-height: 1.5; color: rgba(255, 255, 255, .9); text-align: center; letter-spacing: 1px; }
.ph-1 { background: linear-gradient(135deg, #0e4d92 0%, #1f6ec4 100%); }
.ph-2 { background: linear-gradient(135deg, #0a7f86 0%, #37b4a4 100%); }
.ph-3 { background: linear-gradient(135deg, #274b8f 0%, #4a63b5 100%); }
.ph-4 { background: linear-gradient(135deg, #17587a 0%, #2f93b8 100%); }
.ph-5 { background: linear-gradient(135deg, #3d4a63 0%, #6b7b96 100%); }
.ph-6 { background: linear-gradient(135deg, #0b6b5a 0%, #2ba07e 100%); }

/* -------------------------------- 解决方案卡片 -------------------------------- */
.scard {
    position: relative; display: flex; flex-direction: column;
    padding: 34px 30px; height: 100%;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .12); border-radius: var(--radius-lg);
    transition: all .3s var(--ease);
}
.scard:hover { background: rgba(255, 255, 255, .1); transform: translateY(-6px); border-color: rgba(255, 255, 255, .3); }
.scard .biz-icon { background: rgba(255, 255, 255, .12); color: #fff; }
.scard:hover .biz-icon { background: var(--c-accent); color: #fff; }
.scard h3 { color: #fff; font-size: 19px; margin-bottom: 8px; }
.scard .scard-industry { font-size: 12.5px; color: var(--c-accent); margin-bottom: 12px; }
.scard p { font-size: 14px; color: rgba(255, 255, 255, .7); line-height: 1.8; margin-bottom: 18px; flex: 1; }
.scard .link-more { color: #fff; margin-top: auto; }

/* -------------------------------- 新闻 -------------------------------- */
.news-feature { display: grid; grid-template-columns: 1.1fr 1fr; gap: 40px; }
.nfeature-cover { position: relative; height: 320px; border-radius: var(--radius-lg); overflow: hidden; }
.nfeature-cover img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s var(--ease); }
.nfeature-cover:hover img { transform: scale(1.05); }
.nfeature-body { padding-top: 6px; }
.nfeature-body .meta { font-size: 13px; color: var(--c-text-3); margin-bottom: 10px; display: flex; gap: 16px; align-items: center; }
.nfeature-body h3 { font-size: 24px; line-height: 1.5; margin-bottom: 14px; }
.nfeature-body p { color: var(--c-text-2); margin-bottom: 20px; }

.news-list-simple li { border-bottom: 1px solid var(--c-border-light); }
.news-list-simple li:last-child { border-bottom: 0; }
.news-list-simple a { display: flex; align-items: center; gap: 16px; padding: 16px 0; }
.news-list-simple .date {
    flex: none; width: 62px; text-align: center; padding: 6px 0;
    background: var(--c-bg-soft); border-radius: var(--radius); color: var(--c-text-2);
    transition: all .24s var(--ease);
}
.news-list-simple .date b { display: block; font-size: 20px; line-height: 1.1; color: var(--c-text); }
.news-list-simple .date span { font-size: 11.5px; }
.news-list-simple a:hover .date { background: var(--c-primary); color: rgba(255, 255, 255, .8); }
.news-list-simple a:hover .date b { color: #fff; }
.news-list-simple .txt { min-width: 0; }
.news-list-simple .txt h4 { font-size: 16px; font-weight: 500; margin-bottom: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.news-list-simple .txt p { font-size: 13.5px; color: var(--c-text-3); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* -------------------------------- 合作伙伴 -------------------------------- */
.partner-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.partner-item {
    height: 92px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius);
    display: flex; align-items: center; justify-content: center; padding: 14px 18px;
    color: var(--c-text-2); font-size: 15px; text-align: center;
    transition: all .26s var(--ease);
}
.partner-item:hover { border-color: var(--c-primary); color: var(--c-primary); box-shadow: var(--shadow-sm); transform: translateY(-3px); }
.partner-item img { max-height: 56px; object-fit: contain; }

/* -------------------------------- CTA -------------------------------- */
.cta {
    background: linear-gradient(120deg, var(--c-primary-dark) 0%, var(--c-primary) 55%, var(--c-accent) 100%);
    color: #fff; padding: 58px 0;
}
.cta .container { display: flex; align-items: center; justify-content: space-between; gap: 30px; flex-wrap: wrap; }
.cta h2 { font-size: 28px; font-weight: 700; margin-bottom: 8px; }
.cta p { color: rgba(255, 255, 255, .82); }
.cta-actions { display: flex; gap: 14px; flex-wrap: wrap; }
.cta .btn-line { background: #fff; color: var(--c-primary); border-color: #fff; }
.cta .btn-line:hover { background: rgba(255, 255, 255, .88); color: var(--c-primary-dark); }

/* -------------------------------- 页脚 -------------------------------- */
.footer { background: #0b1c30; color: rgba(255, 255, 255, .62); font-size: 14px; }
.footer-main { padding: 56px 0 40px; display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.3fr; gap: 40px; }
.footer h4 { color: #fff; font-size: 16px; margin-bottom: 20px; font-weight: 600; }
.footer a:hover { color: #fff; }
.footer-brand .logo-name { color: #fff; }
.footer-brand .logo-sub { color: rgba(255, 255, 255, .38); }
.footer-brand p { margin-top: 18px; line-height: 1.9; }
.footer-links li { margin-bottom: 11px; }
.footer-contact li { display: flex; gap: 10px; margin-bottom: 13px; line-height: 1.7; }
.footer-contact .ico { color: var(--c-accent); margin-top: 3px; }
.footer-contact b { color: #fff; font-weight: 500; }
.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, .1); padding: 20px 0;
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    font-size: 13px; color: rgba(255, 255, 255, .45); flex-wrap: wrap;
}
.footer-bottom a { color: rgba(255, 255, 255, .55); }

.back-top {
    position: fixed; right: 26px; bottom: 32px; z-index: 90;
    width: 46px; height: 46px; border: 0; border-radius: 50%;
    background: var(--c-primary); color: #fff;
    display: flex; align-items: center; justify-content: center;
    box-shadow: var(--shadow); opacity: 0; visibility: hidden;
    transition: all .28s var(--ease);
}
.back-top.show { opacity: 1; visibility: visible; }
.back-top:hover { background: var(--c-primary-dark); transform: translateY(-3px); }

/* -------------------------------- 内页头图 + 面包屑 -------------------------------- */
.page-hero {
    position: relative; height: 260px; display: flex; align-items: center;
    background: linear-gradient(115deg, #0a3a70 0%, #0e4d92 52%, #0aa2a8 100%);
    color: #fff; overflow: hidden;
}
.page-hero::after {
    content: ""; position: absolute; right: -80px; top: -120px;
    width: 420px; height: 420px; border-radius: 50%;
    background: rgba(255, 255, 255, .06);
}
.page-hero-inner { position: relative; z-index: 2; }
.page-hero h1 { font-size: 36px; font-weight: 700; letter-spacing: 1.5px; margin-bottom: 10px; }
.page-hero .sub { color: rgba(255, 255, 255, .74); font-size: 15px; letter-spacing: 2px; text-transform: uppercase; }

.crumb-bar { border-bottom: 1px solid var(--c-border-light); background: #fff; }
.crumb { display: flex; align-items: center; gap: 8px; padding: 15px 0; font-size: 13.5px; color: var(--c-text-3); flex-wrap: wrap; }
.crumb .ico { width: 14px; height: 14px; }
.crumb a:hover { color: var(--c-primary); }
.crumb .sep { color: var(--c-border); }
.crumb .cur { color: var(--c-text); }

/* -------------------------------- 筛选标签 -------------------------------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-bottom: 42px; }
.filter-bar a {
    height: 38px; padding: 0 22px; border-radius: 999px;
    border: 1px solid var(--c-border); background: #fff;
    display: inline-flex; align-items: center; font-size: 14.5px; color: var(--c-text-2);
    transition: all .22s var(--ease);
}
.filter-bar a:hover { border-color: var(--c-primary); color: var(--c-primary); }
.filter-bar a.active { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }

/* -------------------------------- 两栏内页布局 -------------------------------- */
.layout-2col { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 44px; align-items: start; }
.side-box { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: 24px; margin-bottom: 24px; }
.side-box h3 { font-size: 17px; margin-bottom: 18px; padding-bottom: 14px; border-bottom: 1px solid var(--c-border-light); display: flex; align-items: center; gap: 8px; }
.side-box h3 .ico { color: var(--c-primary); }
.side-nav li { border-bottom: 1px dashed var(--c-border-light); }
.side-nav li:last-child { border-bottom: 0; }
.side-nav a { display: flex; align-items: center; justify-content: space-between; padding: 11px 0; font-size: 14.5px; color: var(--c-text-2); }
.side-nav a:hover, .side-nav a.active { color: var(--c-primary); font-weight: 500; }
.side-hot li { display: flex; gap: 12px; padding: 12px 0; border-bottom: 1px dashed var(--c-border-light); }
.side-hot li:last-child { border-bottom: 0; }
.side-hot .no {
    flex: none; width: 22px; height: 22px; border-radius: 4px; font-size: 12px;
    display: flex; align-items: center; justify-content: center;
    background: var(--c-bg-soft); color: var(--c-text-3);
}
.side-hot li:nth-child(-n+3) .no { background: var(--c-primary); color: #fff; }
.side-hot .t { font-size: 14px; line-height: 1.6; }
.side-hot .d { font-size: 12.5px; color: var(--c-text-3); margin-top: 2px; }

/* -------------------------------- 新闻列表 -------------------------------- */
.nlist-item {
    display: grid; grid-template-columns: 250px minmax(0, 1fr); gap: 26px;
    padding: 24px; background: #fff; border: 1px solid var(--c-border);
    border-radius: var(--radius-lg); margin-bottom: 22px;
    transition: all .28s var(--ease);
}
.nlist-item:hover { box-shadow: var(--shadow); border-color: transparent; transform: translateY(-3px); }
.nlist-cover { position: relative; height: 158px; border-radius: var(--radius); overflow: hidden; }
.nlist-cover img { width: 100%; height: 100%; object-fit: cover; }
.nlist-body { display: flex; flex-direction: column; }
.nlist-body h3 { font-size: 19px; margin-bottom: 10px; line-height: 1.5; }
.nlist-body h3 a:hover { color: var(--c-primary); }
.nlist-body .summary {
    color: var(--c-text-2); font-size: 14px; line-height: 1.85; margin-bottom: 16px;
    display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}
.meta-row { display: flex; align-items: center; gap: 18px; font-size: 13px; color: var(--c-text-3); margin-top: auto; flex-wrap: wrap; }
.meta-row span { display: inline-flex; align-items: center; gap: 5px; }
.meta-row .ico { width: 14px; height: 14px; }
.badge-top { display: inline-flex; align-items: center; height: 20px; padding: 0 8px; border-radius: 3px; background: #fdecec; color: #d64545; font-size: 12px; margin-right: 8px; }
.badge-cat { display: inline-flex; align-items: center; height: 22px; padding: 0 10px; border-radius: 3px; background: var(--c-primary-50); color: var(--c-primary); font-size: 12.5px; }

/* -------------------------------- 分页 -------------------------------- */
.pager { display: flex; justify-content: center; align-items: center; gap: 8px; margin-top: 38px; flex-wrap: wrap; }
.pager a, .pager span {
    min-width: 40px; height: 40px; padding: 0 12px;
    display: inline-flex; align-items: center; justify-content: center;
    border: 1px solid var(--c-border); border-radius: var(--radius);
    background: #fff; font-size: 14px; color: var(--c-text-2);
    transition: all .2s var(--ease);
}
.pager a:hover { border-color: var(--c-primary); color: var(--c-primary); }
.pager .cur { background: var(--c-primary); border-color: var(--c-primary); color: #fff; }
.pager .disabled { color: var(--c-text-3); background: var(--c-bg-soft); cursor: not-allowed; }
.pager .total { border: 0; background: transparent; color: var(--c-text-3); font-size: 13.5px; }

/* -------------------------------- 富文本正文 -------------------------------- */
.article { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: 40px 46px; }
.article-head { padding-bottom: 24px; border-bottom: 1px solid var(--c-border-light); margin-bottom: 28px; }
.article-head h1 { font-size: 30px; line-height: 1.45; margin-bottom: 16px; }

.rich { font-size: 15.5px; line-height: 1.95; color: #33404f; word-wrap: break-word; }
.rich > *:first-child { margin-top: 0; }
.rich p { margin: 0 0 18px; }
.rich h2 { font-size: 22px; margin: 34px 0 16px; padding-left: 14px; border-left: 4px solid var(--c-primary); line-height: 1.4; color: var(--c-text); }
.rich h3 { font-size: 18.5px; margin: 26px 0 12px; color: var(--c-text); }
.rich h4 { font-size: 16.5px; margin: 22px 0 10px; color: var(--c-text); }
.rich ul, .rich ol { margin: 0 0 18px; padding-left: 22px; }
.rich ul { list-style: disc; }
.rich ol { list-style: decimal; }
.rich li { margin-bottom: 8px; }
.rich img { max-width: 100%; height: auto; border-radius: var(--radius); margin: 10px auto; display: block; }
.rich a { color: var(--c-primary); text-decoration: underline; }
.rich blockquote {
    margin: 0 0 18px; padding: 14px 20px; background: var(--c-bg-soft);
    border-left: 4px solid var(--c-accent); color: var(--c-text-2); border-radius: 0 var(--radius) var(--radius) 0;
}
.rich table { margin: 0 0 18px; border: 1px solid var(--c-border); font-size: 14.5px; }
.rich th, .rich td { border: 1px solid var(--c-border); padding: 10px 14px; text-align: left; }
.rich th { background: var(--c-bg-soft); font-weight: 600; }
.rich strong { color: var(--c-text); }
.rich hr { border: 0; border-top: 1px solid var(--c-border); margin: 26px 0; }
.rich u { text-decoration: underline; }
.rich em, .rich i { font-style: italic; }
.rich s, .rich del { text-decoration: line-through; color: var(--c-text-3); }
.rich sub, .rich sup { font-size: 75%; line-height: 0; position: relative; }
.rich sup { top: -.5em; }
.rich sub { bottom: -.25em; }
.rich iframe, .rich video { max-width: 100%; border: 0; border-radius: var(--radius); }
.rich pre { margin: 0 0 18px; padding: 14px 18px; background: var(--c-bg-soft); border-radius: var(--radius); overflow-x: auto; font-size: 13.5px; }
/* 单独成段的图片居中展示，视觉更规整 */
.rich p > img:only-child { display: block; margin: 20px auto; }

/* 兼容后台富文本编辑器（Quill）输出的对齐与缩进类名，保证前后台呈现一致 */
.rich .ql-align-center { text-align: center; }
.rich .ql-align-right { text-align: right; }
.rich .ql-align-justify { text-align: justify; }
.rich .ql-align-center > img, .rich .ql-align-right > img { display: inline-block; margin-left: 0; margin-right: 0; }
.rich .ql-indent-1 { padding-left: 3em; }
.rich .ql-indent-2 { padding-left: 6em; }
.rich .ql-indent-3 { padding-left: 9em; }
.rich .ql-indent-4 { padding-left: 12em; }
.rich .ql-indent-5 { padding-left: 15em; }
.rich .ql-indent-6 { padding-left: 18em; }
.rich .ql-indent-7 { padding-left: 21em; }
.rich .ql-indent-8 { padding-left: 24em; }
/* Quill 用空段落表示空行，避免其被压成 0 高度 */
.rich p:empty::before { content: ''; display: inline-block; }

.article-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 34px; padding-top: 24px; border-top: 1px solid var(--c-border-light); font-size: 14.5px; flex-wrap: wrap; }
.article-nav a { max-width: 46%; color: var(--c-text-2); }
.article-nav a:hover { color: var(--c-primary); }
.article-nav .none { color: var(--c-text-3); }

/* -------------------------------- 产品 / 方案详情 -------------------------------- */
.detail-hero { display: grid; grid-template-columns: 420px minmax(0, 1fr); gap: 44px; align-items: center; margin-bottom: 20px; }
.detail-cover { position: relative; height: 280px; border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow); }
.detail-cover img { width: 100%; height: 100%; object-fit: cover; }
.detail-info h1 { font-size: 32px; line-height: 1.4; margin-bottom: 12px; }
.detail-info .subtitle { color: var(--c-accent); font-size: 16px; margin-bottom: 18px; }
.detail-info .summary { color: var(--c-text-2); line-height: 1.95; margin-bottom: 26px; }
.detail-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.block { margin-top: 44px; }
.block-head { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.block-head .n {
    width: 34px; height: 34px; border-radius: 8px; flex: none;
    background: var(--c-primary-50); color: var(--c-primary);
    display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 15px;
}
.block-head h2 { font-size: 22px; }

/* -------------------------------- 发展历程 -------------------------------- */
.timeline { position: relative; padding-left: 34px; }
.timeline::before { content: ""; position: absolute; left: 9px; top: 6px; bottom: 6px; width: 2px; background: var(--c-border); }
.tl-item { position: relative; padding-bottom: 34px; }
.tl-item:last-child { padding-bottom: 0; }
.tl-item::before {
    content: ""; position: absolute; left: -30px; top: 7px;
    width: 12px; height: 12px; border-radius: 50%;
    background: #fff; border: 3px solid var(--c-primary);
}
.tl-year { font-size: 20px; font-weight: 700; color: var(--c-primary); margin-bottom: 6px; }
.tl-item h4 { font-size: 17px; margin-bottom: 6px; }
.tl-item p { color: var(--c-text-2); font-size: 14.5px; }

/* -------------------------------- 招聘 -------------------------------- */
.job-item { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); margin-bottom: 16px; overflow: hidden; transition: box-shadow .26s var(--ease); }
.job-item.open { box-shadow: var(--shadow); }
.job-head { display: flex; align-items: center; gap: 20px; padding: 22px 26px; cursor: pointer; }
.job-head:hover { background: var(--c-bg-soft); }
.job-title { min-width: 0; flex: 1; }
.job-title h3 { font-size: 18.5px; margin-bottom: 6px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.job-tags { display: flex; gap: 14px; font-size: 13.5px; color: var(--c-text-3); flex-wrap: wrap; }
.job-tags span { display: inline-flex; align-items: center; gap: 5px; }
.job-arrow { flex: none; width: 32px; height: 32px; border-radius: 50%; background: var(--c-bg-soft); color: var(--c-text-2); display: flex; align-items: center; justify-content: center; transition: all .26s var(--ease); }
.job-item.open .job-arrow { background: var(--c-primary); color: #fff; transform: rotate(180deg); }
.job-body { display: none; padding: 4px 26px 28px; border-top: 1px solid var(--c-border-light); }
.job-item.open .job-body { display: block; }
.job-section { margin-top: 20px; }
.job-section h4 { font-size: 15.5px; margin-bottom: 12px; display: flex; align-items: center; gap: 8px; }
.job-section h4 .ico { color: var(--c-accent); }
.job-section ol { counter-reset: item; }
.job-section li { position: relative; padding-left: 26px; margin-bottom: 9px; color: var(--c-text-2); font-size: 14.5px; line-height: 1.8; }
.job-section li::before {
    counter-increment: item; content: counter(item);
    position: absolute; left: 0; top: 4px;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--c-primary-50); color: var(--c-primary);
    font-size: 11.5px; display: flex; align-items: center; justify-content: center;
}
.job-apply { margin-top: 24px; padding: 18px 22px; background: var(--c-bg-soft); border-radius: var(--radius); display: flex; align-items: center; justify-content: space-between; gap: 18px; flex-wrap: wrap; font-size: 14.5px; }

/* -------------------------------- 联系我们 -------------------------------- */
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.contact-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: 32px 28px; text-align: center; transition: all .28s var(--ease); }
.contact-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); border-color: transparent; }
.contact-card .biz-icon { margin: 0 auto 18px; }
.contact-card h3 { font-size: 17px; margin-bottom: 8px; }
.contact-card p { color: var(--c-text-2); font-size: 15px; line-height: 1.8; word-break: break-all; }
.contact-card .big { font-size: 20px; font-weight: 600; color: var(--c-primary); }

.form-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 380px; gap: 44px; align-items: start; }
.form-card { background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius-lg); padding: 34px 36px; }
.form-card h2 { font-size: 24px; margin-bottom: 8px; }
.form-card .tip { color: var(--c-text-2); font-size: 14px; margin-bottom: 26px; }
.form-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.field { margin-bottom: 18px; }
.field label { display: block; font-size: 14px; margin-bottom: 8px; color: var(--c-text); }
.field label .req { color: #d64545; margin-left: 3px; }
.field input, .field textarea, .field select {
    width: 100%; padding: 11px 14px; font-size: 14.5px;
    border: 1px solid var(--c-border); border-radius: var(--radius);
    background: #fff; outline: none; transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field textarea { min-height: 128px; resize: vertical; }
.field input:focus, .field textarea:focus, .field select:focus { border-color: var(--c-primary); box-shadow: 0 0 0 3px rgba(14, 77, 146, .1); }
.field .hint { font-size: 12.5px; color: var(--c-text-3); margin-top: 6px; }
.form-note { font-size: 13px; color: var(--c-text-3); margin-top: 14px; }

.info-panel { background: linear-gradient(160deg, var(--c-primary-dark) 0%, var(--c-primary) 100%); color: #fff; border-radius: var(--radius-lg); padding: 34px 30px; }
.info-panel h3 { font-size: 20px; margin-bottom: 20px; }
.info-panel ul li { display: flex; gap: 12px; padding: 13px 0; border-bottom: 1px solid rgba(255, 255, 255, .14); }
.info-panel ul li:last-child { border-bottom: 0; }
.info-panel .ico { color: rgba(255, 255, 255, .8); margin-top: 3px; }
.info-panel .k { font-size: 12.5px; color: rgba(255, 255, 255, .62); }
.info-panel .v { font-size: 15px; }

.map-box { height: 300px; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--c-border); background: var(--c-bg-soft); position: relative; }
.map-box svg { width: 100%; height: 100%; display: block; }

/* -------------------------------- 搜索结果 -------------------------------- */
.result-group { margin-bottom: 40px; }
.result-group > h2 { font-size: 20px; margin-bottom: 18px; display: flex; align-items: center; gap: 10px; }
.result-group > h2 em { font-style: normal; font-size: 13px; color: var(--c-text-3); font-weight: 400; }
.result-item { padding: 18px 22px; background: #fff; border: 1px solid var(--c-border); border-radius: var(--radius); margin-bottom: 12px; transition: all .22s var(--ease); }
.result-item:hover { border-color: var(--c-primary); box-shadow: var(--shadow-sm); }
.result-item h3 { font-size: 16.5px; margin-bottom: 6px; }
.result-item p { font-size: 14px; color: var(--c-text-2); overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; }
.hl { color: #d64545; font-style: normal; }

/* -------------------------------- 空态 / 提示 -------------------------------- */
.empty { text-align: center; padding: 70px 20px; color: var(--c-text-3); }
.empty svg { width: 64px; height: 64px; stroke-width: 1.2; color: var(--c-border); margin-bottom: 16px; }
.empty p { font-size: 15px; }

.toast {
    position: fixed; left: 50%; top: 30px; z-index: 999;
    transform: translate(-50%, -20px);
    min-width: 240px; max-width: 76vw; padding: 13px 22px;
    border-radius: var(--radius); background: #1f2733; color: #fff; font-size: 14.5px;
    box-shadow: var(--shadow-lg); opacity: 0; visibility: hidden;
    transition: all .3s var(--ease); text-align: center;
}
.toast.show { opacity: 1; visibility: visible; transform: translate(-50%, 0); }
.toast.ok { background: #14804a; }
.toast.err { background: #c62828; }

/* -------------------------------- 错误页 -------------------------------- */
.err-page { min-height: 100vh; display: flex; align-items: center; justify-content: center; text-align: center; padding: 40px 24px; background: var(--c-bg-soft); }
.err-code { font-size: 96px; font-weight: 700; line-height: 1; color: var(--c-primary); letter-spacing: 4px; }
.err-page h1 { font-size: 24px; margin: 18px 0 10px; }
.err-page p { color: var(--c-text-2); margin-bottom: 28px; }

/* -------------------------------- 动效 -------------------------------- */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }

/* -------------------------------- 响应式 -------------------------------- */
@media (max-width: 1100px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .layout-2col { grid-template-columns: 1fr; }
    .detail-hero { grid-template-columns: 1fr; }
    .form-wrap { grid-template-columns: 1fr; }
    .footer-main { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 980px) {
    .nav-toggle { display: inline-flex; }
    .nav {
        position: absolute; left: 0; right: 0; top: 100%;
        background: #fff; border-bottom: 1px solid var(--c-border);
        box-shadow: var(--shadow); height: auto; display: none; padding: 8px 0;
    }
    .nav.open { display: block; }
    .nav-list { flex-direction: column; align-items: stretch; height: auto; }
    .nav-list > li { height: auto; }
    .nav-list > li > a { height: 50px; padding: 0 24px; }
    .nav-list > li > a::after { display: none; }
    .nav-list > li.active > a { background: var(--c-primary-50); }
    .header .container { position: relative; }

    .grid-3, .grid-2, .contact-grid, .partner-grid, .stat-row { grid-template-columns: repeat(2, 1fr); }
    .about-row, .news-feature { grid-template-columns: 1fr; gap: 34px; }
    .hero { height: 460px; }
    .hero-title { font-size: 34px; }
    .hero-desc { font-size: 15.5px; }
    .hero-arrow { display: none; }
    .section { padding: 60px 0; }
    .section-head { margin-bottom: 26px; }
    .section-head h2, .about-text h2 { font-size: 25px; }
    .page-hero { height: 200px; }
    .page-hero h1 { font-size: 27px; }
    .nlist-item { grid-template-columns: 1fr; }
    .nlist-cover { height: 190px; }
    .article { padding: 26px 22px; }
    .article-head h1 { font-size: 23px; }
    .section-head-left { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 640px) {
    .topbar-right { display: none; }
    .grid-3, .grid-2, .grid-4, .contact-grid, .partner-grid, .form-row { grid-template-columns: 1fr; }
    .stat-row { grid-template-columns: repeat(2, 1fr); }
    .footer-main { grid-template-columns: 1fr; gap: 30px; }
    .hero { height: 420px; }
    .hero-title { font-size: 27px; }
    .cta .container { flex-direction: column; text-align: center; }
    .job-head { flex-wrap: wrap; }
    .article-nav a { max-width: 100%; }
    .err-code { font-size: 68px; }
}

/* ==========================================================================
   产品与服务长页 · 深色科技风（dark-tech tokens + 玻璃拟态 + 发光）
   新增变量统一加 --dt- 前缀，避免与现有 --c-* 冲突；复用 --c-primary/--c-accent 作高亮
   ========================================================================== */
:root {
    --dt-bg: radial-gradient(1200px 620px at 82% -12%, #1c1648 0%, transparent 60%),
             radial-gradient(1000px 520px at -8% 8%, #102a4d 0%, transparent 55%),
             linear-gradient(160deg, #0b1026 0%, #0e1330 46%, #161033 100%);
    --dt-surface: rgba(255, 255, 255, .05);
    --dt-surface-2: rgba(255, 255, 255, .09);
    --dt-border: rgba(140, 170, 255, .18);
    --dt-glow: rgba(40, 220, 210, .55);
    --dt-text: rgba(233, 240, 255, .86);
    --dt-text-dim: rgba(190, 205, 235, .62);
    --dt-radius: 14px;
    --dt-cyan: #2fd9c9;
    --dt-blue: #4d8bff;
}

.platform-page { background: var(--dt-bg); color: var(--dt-text); }

/* 顶部章节副导航（吸顶，移动端横滑） */
/* 顶部章节副导航（方案 A：取消吸顶，改为普通静态导航，随页面自然滚动） */
.sec-subnav {
    position: static;
    background: rgba(10, 16, 38, .82); backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--dt-border);
}
.sec-subnav-inner { display: flex; gap: 6px; overflow-x: auto; padding: 10px 24px; scrollbar-width: thin; }
.sec-subnav a {
    flex: none; padding: 6px 14px; border-radius: 999px; font-size: 13.5px;
    color: var(--dt-text-dim); border: 1px solid transparent; white-space: nowrap;
    transition: all .2s var(--ease);
}
.sec-subnav a:hover, .sec-subnav a.active { color: #fff; background: var(--dt-surface-2); border-color: var(--dt-border); }

/* 右侧点状锚点导航（桌面端） */
.sec-dots { position: fixed; right: 22px; top: 50%; transform: translateY(-50%); z-index: 95; }
.sec-dots ul { display: flex; flex-direction: column; gap: 14px; list-style: none; margin: 0; padding: 0; }
.dot-link { position: relative; display: flex; align-items: center; color: var(--dt-text-dim); }
.dot-link .dot {
    width: 11px; height: 11px; border-radius: 50%; flex: none;
    border: 1.5px solid rgba(160, 190, 255, .5); background: transparent;
    transition: all .25s var(--ease);
}
.dot-link:hover .dot, .dot-link.active .dot {
    background: var(--dt-cyan); border-color: var(--dt-cyan);
    box-shadow: 0 0 0 4px rgba(47, 217, 201, .18), 0 0 14px var(--dt-glow);
}
.dot-label {
    position: absolute; right: 22px; white-space: nowrap; font-size: 12.5px;
    padding: 3px 10px; border-radius: 999px; background: rgba(10, 16, 38, .92);
    border: 1px solid var(--dt-border); opacity: 0; transform: translateX(6px);
    transition: all .22s var(--ease); pointer-events: none;
}
.dot-link:hover .dot-label, .dot-link.active .dot-label { opacity: 1; transform: translateX(0); }

/* Hero */
.dt-hero {
    position: relative; padding: 76px 0 56px; overflow: hidden;
    background: radial-gradient(900px 420px at 85% -20%, rgba(77, 139, 255, .28), transparent 60%),
                radial-gradient(800px 400px at 0% 0%, rgba(47, 217, 201, .16), transparent 55%),
                linear-gradient(160deg, #0b1026 0%, #101a40 55%, #1a1340 100%);
}
.dt-hero-glow {
    position: absolute; width: 520px; height: 520px; right: -120px; top: -160px;
    border-radius: 50%; background: radial-gradient(circle, rgba(77, 139, 255, .35), transparent 65%);
    filter: blur(10px); pointer-events: none;
}
.dt-hero-inner { position: relative; z-index: 2; }
.dt-eyebrow {
    display: inline-block; letter-spacing: 3px; font-size: 13px; color: var(--dt-cyan);
    margin-bottom: 16px; padding: 5px 14px; border: 1px solid var(--dt-border); border-radius: 999px;
}
.dt-hero-title { font-size: 46px; line-height: 1.22; font-weight: 700; color: #fff; margin-bottom: 18px; }
.dt-hero-desc { font-size: 17px; color: var(--dt-text); max-width: 640px; margin-bottom: 30px; }
.dt-hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 32px; }

/* 产品详情长页 Hero */
.dt-product-hero { display: grid; grid-template-columns: 240px 1fr; gap: 48px; align-items: center; }
.dt-product-cover { width: 240px; height: 240px; border-radius: 22px; overflow: hidden; background: var(--dt-surface); border: 1px solid var(--dt-border); box-shadow: 0 16px 44px rgba(0, 0, 0, .35); }
.dt-product-cover img { width: 100%; height: 100%; object-fit: cover; }
.dt-product-cover .ph { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.dt-product-cover .ph svg { width: 90px; height: 90px; color: rgba(255, 255, 255, .85); }
.dt-product-info .dt-hero-title { margin-bottom: 14px; }
.dt-product-info .dt-hero-desc { color: var(--dt-text); margin-bottom: 14px; }

.dt-stats { display: grid; grid-template-columns: repeat(4, auto); gap: 18px 46px; max-width: 780px; }
.dt-stat { position: relative; padding-left: 16px; }
.dt-stat::before {
    content: ""; position: absolute; left: 0; top: 6px; bottom: 6px; width: 3px;
    border-radius: 3px; background: linear-gradient(var(--dt-cyan), var(--dt-blue));
}
.dt-stat-num { font-size: 34px; font-weight: 700; color: #fff; line-height: 1.1; }
.dt-stat-label { font-size: 13.5px; color: var(--dt-text-dim); margin-top: 4px; }

/* 通用长页 section */
.dt-section { position: relative; padding: 56px 0; }
.dt-section + .dt-section { border-top: 1px solid rgba(140, 170, 255, .08); }
.dt-section .eyebrow { color: var(--dt-cyan); }
.dt-section .section-head h2 { color: #fff; }
.dt-section .section-head p { color: var(--dt-text-dim); }
.dt-section .section-head-left h2 { color: #fff; }
.dt-legacy { text-align: center; }

/* S1 挑战核心 + 卡片网格 */
.challenge-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 22px;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 12px;
}
.challenge-core { display: flex; justify-content: center; }
.challenge-core-ring {
    position: relative;
    width: 150px;
    height: 150px;
}
.challenge-core-ring .ring-svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.challenge-core-ring .ring-bg { fill: none; stroke: rgba(140, 170, 255, .16); stroke-width: 10; }
.challenge-core-ring .ring-fg { fill: none; stroke: var(--dt-cyan); stroke-width: 10; stroke-linecap: round; stroke-dasharray: 490; stroke-dashoffset: 490; filter: drop-shadow(0 0 8px var(--dt-glow)); animation: dtRingDrawChallenge 1.6s var(--ease) forwards; }
.challenge-core-text {
    position: absolute; top: 0; right: 0; bottom: 0; left: 0; inset: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
    color: #fff; text-align: center;
}
.challenge-core-text svg { width: 26px; height: 26px; color: var(--dt-cyan); }
.challenge-core-text span { font-size: 13px; font-weight: 600; letter-spacing: 1px; line-height: 1.35; }

.challenge-grid {
    display: flex;
    /*flex-wrap: wrap;*/
    justify-content: left;
    gap: 14px;
    width: 100%;
}
.challenge-card {
    flex: 1 1 220px;
    max-width: 280px;
    min-width: 200px;
    padding: 18px 18px 16px;
    background: linear-gradient(160deg, rgba(22, 28, 58, .82), rgba(12, 17, 42, .92));
    border: 1px solid var(--dt-border);
    border-radius: var(--dt-radius);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.challenge-card:hover { transform: translateY(-4px); border-color: var(--dt-cyan); box-shadow: 0 8px 22px rgba(10, 16, 38, .35), 0 0 0 1px rgba(47, 217, 201, .25); }
.challenge-card-ico { display: inline-flex; width: 38px; height: 38px; border-radius: 10px; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(77, 139, 255, .22), rgba(47, 217, 201, .18)); color: #fff; margin-bottom: 10px; }
.challenge-card-ico svg { width: 20px; height: 20px; }
.challenge-card h4 { color: #fff; font-size: 15px; margin-bottom: 5px; }
.challenge-card p { font-size: 13px; color: var(--dt-text-dim); line-height: 1.6; margin: 0; }

/* S2 趋势卡片 */
.trend-card {
    background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius);
    padding: 22px 20px; backdrop-filter: blur(8px); height: 100%;
    transition: transform .3s var(--ease), border-color .3s var(--ease), box-shadow .3s var(--ease);
}
.trend-card:hover { transform: translateY(-4px); border-color: var(--dt-cyan); box-shadow: 0 8px 22px rgba(10, 16, 38, .35), 0 0 0 1px rgba(47, 217, 201, .25); }
.trend-ico { display: inline-flex; width: 44px; height: 44px; border-radius: 11px; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(77, 139, 255, .22), rgba(47, 217, 201, .18)); color: #fff; margin-bottom: 12px; }
.trend-ico svg { width: 22px; height: 22px; }
.trend-card h3 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.trend-card p { font-size: 13.5px; color: var(--dt-text-dim); line-height: 1.65; margin: 0; }

/* S3 架构图 */
.arch-stage { display: grid; /*grid-template-columns: 1.5fr 1fr;*/ gap: 24px; align-items: center; }
.arch-diagram { background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); padding: 16px; backdrop-filter: blur(8px); }
.arch-diagram svg { width: 100%; height: auto; display: block; }
.arch-diagram text { font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif; }
.arch-layer { fill: rgba(77, 139, 255, .06); stroke: rgba(140, 170, 255, .35); stroke-width: 1.5; }
.arch-layer-label { fill: #fff; font-size: 17px; font-weight: 700; }
.arch-layer-cap { fill: var(--dt-text-dim); font-size: 13px; }
.arch-node { fill: rgba(47, 217, 201, .12); stroke: rgba(47, 217, 201, .4); stroke-width: 1; }
.arch-node-t { fill: rgba(233, 240, 255, .82); font-size: 12px; }
.arch-notes { display: flex; flex-direction: column; gap: 14px; }
.arch-note { display: flex; gap: 12px; padding: 12px 14px; background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); }
.arch-note-ico { flex: none; width: 38px; height: 38px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; background: rgba(77, 139, 255, .18); color: var(--dt-cyan); }
.arch-note-ico svg { width: 20px; height: 20px; }
.arch-note h4 { color: #fff; font-size: 15px; margin-bottom: 4px; }
.arch-note p { color: var(--dt-text-dim); font-size: 13px; line-height: 1.6; margin: 0; }

/* S4 能力卡 + 引擎标签 */
.ability-card { background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); padding: 22px 20px; backdrop-filter: blur(8px); height: 100%; transition: all .3s var(--ease); }
.ability-card:hover { transform: translateY(-4px); border-color: var(--dt-cyan); box-shadow: 0 0 0 1px rgba(47, 217, 201, .3); }
.ability-ico { display: inline-flex; width: 44px; height: 44px; border-radius: 11px; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(77, 139, 255, .22), rgba(47, 217, 201, .18)); color: #fff; margin-bottom: 12px; }
.ability-ico svg { width: 22px; height: 22px; }
.ability-card h3 { color: #fff; font-size: 17px; margin-bottom: 8px; }
.ability-card p { font-size: 13.5px; color: var(--dt-text-dim); line-height: 1.65; margin: 0; }
.engine-row { display: inline-block; margin: 24px auto 0; padding: 12px 22px; border: 1px dashed var(--dt-border); border-radius: 999px; color: var(--dt-text); background: var(--dt-surface); font-size: 14px; }
.engine-row p { margin: 0; }

/* S5 全景流程条：一级子项横向排列 + 二级子项垂直堆叠（参考图风格）
   设计要点：
   - .flow-board 内 .flow-stages 横向排列多个 .flow-stage 列（一级子项）
   - 每个 stage 列头部：圆形图标 + 标题（tab 胶囊）+ 描述
   - 每个 stage 列下方：二级子项垂直堆叠，之间 .flow-node-connector dashed 虚线
   - 首个 stage 激活态（is-active-stage）：青蓝渐变填充
   - 移动端：自动换行（flex-wrap）压缩间距 */
.flow-board { max-width: 1180px; margin: 0 auto 36px; padding: 24px 8px; }
.flow-stages {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: flex-start;
    gap: 40px 32px;
}
.flow-stage {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1 1 auto;
    min-width: 132px;
    max-width: 200px;
}

/* stage 头部（一级子项）：圆形图标 + tab 胶囊 + 描述 */
.flow-stage-head { display: flex; flex-direction: column; align-items: center; margin-bottom: 6px; }
.flow-stage-ico {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(47, 217, 201, .12);
    border: 1.5px solid var(--dt-cyan);
    color: var(--dt-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .25s var(--ease);
    box-shadow: 0 0 16px rgba(47, 217, 201, .15);
}
.flow-stage-ico svg { width: 30px; height: 30px; }
.flow-stage-tab {
    margin-top: 10px;
    padding: 7px 16px;
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(140, 170, 255, .22);
    color: rgba(233, 240, 255, .86);
    border-radius: 999px;
    font-weight: 500;
    font-size: 13.5px;
    text-align: center;
    letter-spacing: .3px;
    line-height: 1.4;
    max-width: 200px;
    transition: all .25s var(--ease);
}
.flow-stage-desc {
    color: rgba(190, 205, 235, .62);
    font-size: 12.5px;
    line-height: 1.5;
    text-align: center;
    margin-top: 6px;
    max-width: 200px;
}

/* 二级子项容器 */
.flow-stage-nodes { display: flex; flex-direction: column; align-items: center; width: 100%; }

/* 一级子项激活态：青蓝渐变 */
.flow-stage.is-active-stage .flow-stage-ico {
    background: linear-gradient(135deg, var(--dt-cyan) 0%, #4a90e2 100%);
    border-color: transparent;
    color: #fff;
    box-shadow: 0 6px 18px rgba(74, 144, 226, .35), 0 0 24px rgba(47, 217, 201, .25);
}
.flow-stage.is-active-stage .flow-stage-tab {
    background: linear-gradient(135deg, var(--dt-cyan) 0%, #4a90e2 100%);
    border-color: transparent;
    color: #0a1f3a;
    box-shadow: 0 6px 18px rgba(74, 144, 226, .25);
}

/* 悬停交互 */
.flow-stage:hover .flow-stage-ico { transform: translateY(-2px); }
.flow-node:hover .flow-node-ico { transform: translateY(-2px); }

/* 二级子项：小圆形图标 + 文字 */
.flow-node {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    width: 70%;
}
.flow-node-ico {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(47, 217, 201, .1);
    border: 1.5px solid rgba(47, 217, 201, .7);
    color: var(--dt-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all .25s var(--ease);
}
.flow-node-ico svg { width: 22px; height: 22px; }
.flow-node-title {
    color: rgba(233, 240, 255, .78);
    font-size: 12.5px;
    margin-top: 7px;
    max-width: 110px;
    line-height: 1.35;
}

/* 二级子项之间的 dashed 虚线连接 */
.flow-node-connector {
    width: 0;
    height: 22px;
    border-left: 1.5px dashed rgba(47, 217, 201, .5);
    margin: 6px 0;
}

/* 暂无二级子项时的占位提示 */
.flow-node-empty {
    color: rgba(190, 205, 235, .38);
    font-size: 12px;
    padding: 10px 4px;
    text-align: center;
}

/* 老 pipeline / chevron 相关类兼容（保留以防其他页面误用） */
.flow-bar { display: none; }
.flow-row { display: none; }

/* 跨节点 dashed SVG 连线 overlay
   SVG 由 JS 创建为 body > .flow-board-svg，position:fixed 覆盖整个视口。
   width/height/viewBox 使用视口像素尺寸，path 坐标直接对应 getBoundingClientRect()，
   通过 overflow:visible 防止 path 被裁切。 */
.flow-board { position: relative; overflow: visible; }
.flow-board-svg { overflow: visible; z-index: 5; pointer-events: none; }
/* JS 自己设 position/left/top/width/height，不在 CSS 中重复（避免 important 冲突） */
.flow-board > .flow-stages { position: relative; z-index: 1; }
.flow-board .flow-stage-nodes { position: relative; z-index: 1; }

.matrix { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.matrix-col { background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); padding: 20px 18px; backdrop-filter: blur(8px); transition: all .3s var(--ease); }
.matrix-col:hover { transform: translateY(-4px); border-color: var(--dt-cyan); }
.matrix-head { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.matrix-ico { display: inline-flex; width: 40px; height: 40px; border-radius: 10px; align-items: center; justify-content: center; background: linear-gradient(135deg, rgba(77, 139, 255, .22), rgba(47, 217, 201, .18)); color: #fff; }
.matrix-ico svg { width: 20px; height: 20px; }
.matrix-head h4 { color: #fff; font-size: 16px; margin: 0; }
.matrix-desc { color: var(--dt-text-dim); font-size: 13.5px; line-height: 1.65; margin-bottom: 12px; min-height: 40px; }
.matrix-col .link-more { color: #fff; }

/* S6 产品矩阵：沿用现有 pcard（白卡在深色背景上天然对比） */
.dt-section .rich { color: rgba(255, 255, 255, .82); }
.dt-section .rich h2, .dt-section .rich h3, .dt-section .rich h4, .dt-section .rich strong { color: #fff; }
.dt-section .rich p { margin: 0 0 14px; }
.dt-section .rich img { margin: 10px auto; }
.dt-section .pcard-cat { color: var(--c-accent); }

/* S7 解决方案：沿用现有 scard（深色玻璃卡） */
.dt-section .scard-industry { color: var(--dt-cyan); }

/* S8 价值双圆环 */
.value-stage { display: grid; grid-template-columns: 180px 1fr; gap: 40px; align-items: center; max-width: 900px; margin: 0 auto; }
.value-ring { position: relative; width: 180px; height: 180px; margin: 0 auto; }
.value-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.value-ring .ring-bg { fill: none; stroke: rgba(140, 170, 255, .16); stroke-width: 9; }
.value-ring .ring-fg { fill: none; stroke: var(--dt-cyan); stroke-width: 9; stroke-linecap: round; stroke-dasharray: 402; stroke-dashoffset: 402; filter: drop-shadow(0 0 8px var(--dt-glow)); animation: dtRingDrawValue 1.6s var(--ease) forwards; }
@keyframes dtRingDrawChallenge { from { stroke-dashoffset: 490; } to { stroke-dashoffset: 120; } }
@keyframes dtRingDrawValue { from { stroke-dashoffset: 402; } to { stroke-dashoffset: 90; } }
.value-ring .ring-center { z-index: 2; }
.value-points { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.value-point { display: flex; gap: 12px; padding: 14px; background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); }
.value-point-ico { flex: none; width: 40px; height: 40px; border-radius: 10px; display: inline-flex; align-items: center; justify-content: center; background: rgba(77, 139, 255, .18); color: var(--dt-cyan); }
.value-point-ico svg { width: 20px; height: 20px; }
.value-point h4 { color: #fff; font-size: 16px; margin-bottom: 4px; }
.value-point p { color: var(--dt-text-dim); font-size: 13.5px; line-height: 1.6; margin: 0; }

/* 产品参数 */
.spec-table-wrap { max-width: 800px; margin: 0 auto; }
.spec-table { width: 100%; background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); overflow: hidden; }
.spec-table th, .spec-table td { padding: 13px 18px; text-align: left; border-bottom: 1px solid rgba(140, 170, 255, .1); }
.spec-table th { width: 30%; color: var(--dt-cyan); font-weight: 500; background: rgba(77, 139, 255, .08); }
.spec-table td { color: var(--dt-text); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }

/* 应用场景 */
.scene-grid { gap: 18px; }
.scene-card { background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); overflow: hidden; transition: all .3s var(--ease); }
.scene-card:hover { transform: translateY(-4px); border-color: var(--dt-cyan); }
.scene-cover { height: 160px; overflow: hidden; }
.scene-cover img { width: 100%; height: 100%; object-fit: cover; }
.scene-body { padding: 18px; }
.scene-body h3 { color: #fff; font-size: 16px; margin-bottom: 8px; }
.scene-body p { color: var(--dt-text-dim); font-size: 13.5px; line-height: 1.65; margin: 0; }

/* 客户案例 */
.case-grid { gap: 18px; }
.case-card { background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); overflow: hidden; transition: all .3s var(--ease); }
.case-card:hover { transform: translateY(-4px); border-color: var(--dt-cyan); }
.case-cover { height: 160px; overflow: hidden; }
.case-cover img { width: 100%; height: 100%; object-fit: cover; }
.case-body { padding: 18px; }
.case-body h3 { color: #fff; font-size: 16px; margin-bottom: 8px; }
.case-body p { color: var(--dt-text-dim); font-size: 13.5px; line-height: 1.65; margin-bottom: 12px; }

/* 视频 */
.video-stage { max-width: 900px; margin: 0 auto; }
.video-stage video, .video-stage iframe { width: 100%; border-radius: var(--dt-radius); border: 1px solid var(--dt-border); }
.video-placeholder { aspect-ratio: 16 / 9; background: var(--dt-surface); border: 1px solid var(--dt-border); border-radius: var(--dt-radius); display: flex; flex-direction: column; align-items: center; justify-content: center; color: var(--dt-text-dim); gap: 12px; }
.video-placeholder svg { width: 48px; height: 48px; color: var(--dt-cyan); }

/* CTA */
.dt-cta { text-align: center; }
.dt-cta h2 { color: #fff; font-size: 30px; margin-bottom: 12px; }

/* ===================== 长页响应式 ===================== */
@media (max-width: 1100px) {
    .matrix { grid-template-columns: repeat(2, 1fr); }
    .arch-stage { grid-template-columns: 1fr; }
}

@media (max-width: 980px) {
    /* 移动端隐藏右侧点状导航，保留顶部副导航 */
    .sec-dots { display: none; }
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .dt-hero-title { font-size: 34px; }
    .dt-stats { grid-template-columns: repeat(2, 1fr); gap: 20px; }
    .value-stage { grid-template-columns: 1fr; gap: 36px; }
    .value-points { grid-template-columns: 1fr; }
    .dt-product-hero { grid-template-columns: 1fr; text-align: center; gap: 30px; }
    .dt-product-cover { margin: 0 auto; }
    /* 时间线在 980px：节点尺寸与字号收紧 */
    .flow-stage-tab { font-size: 13px; padding: 9px 18px; max-width: 180px; }
    .flow-node-ico { width: 56px; height: 56px; }
    .flow-node-ico svg { width: 26px; height: 26px; }
    .flow-node-title { font-size: 12.5px; max-width: 90px; }
    .flow-node-connector { height: 24px; margin: 8px 0; }
    .flow-stages { gap: 32px; }
}

@media (max-width: 640px) {
    .grid-4, .grid-3, .grid-2 { grid-template-columns: 1fr; }
    .matrix { grid-template-columns: 1fr; }
    .dt-hero { padding: 60px 0 46px; }
    .dt-section { padding: 44px 0; }
    .dt-hero-title { font-size: 27px; }
    .dt-product-cover { width: 160px; height: 160px; }
    .dt-product-cover .ph svg { width: 60px; height: 60px; }
    .spec-table th, .spec-table td { display: block; width: 100%; }

    /* 挑战核心 + 卡片网格在窄屏保持垂直堆叠 */
    .challenge-stage { gap: 20px; padding: 0 12px; }
    .challenge-core-ring { width: 140px; height: 140px; }
    .challenge-core-text svg { width: 24px; height: 24px; }
    .challenge-core-text span { font-size: 12px; }
    .challenge-card { flex: 1 1 100%; max-width: 100%; min-width: 0; padding: 16px; }

    /* 时间线在 640px 窄屏：节点进一步压缩 */
    .flow-board { padding: 16px 4px; }
    .flow-stages { gap: 24px; }
    .flow-stage { min-width: 110px; }
    .flow-stage-tab { font-size: 12.5px; padding: 8px 16px; max-width: 160px; }
    .flow-node-ico { width: 50px; height: 50px; }
    .flow-node-ico svg { width: 22px; height: 22px; }
    .flow-node-title { font-size: 12px; max-width: 80px; }
    .flow-node-connector { height: 20px; margin: 6px 0; }
}

/* ==========================================================================
   产品分类矩阵（全局区块，固定在每个长页动态 section 之后、CTA 之前）
   复用现有 .matrix 网格与 .matrix-col 卡片样式，仅补充长页场景下的间距微调
   ========================================================================== */
.dt-matrix .matrix { margin-top: 6px; }
.dt-matrix .matrix-col { min-height: 188px; display: flex; flex-direction: column; }
.dt-matrix .matrix-col .link-more { margin-top: auto; }