*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body.site-body{font-family:'IBM Plex Sans', system-ui, sans-serif;line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button{font:inherit;cursor:pointer;border:none;background:none}
.site-wrap{max-width:var(--wrap);margin:0 auto;padding:0 24px}
.site-btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border-radius:var(--radius);font-weight:600;font-size:.95rem;transition:transform .2s,box-shadow .2s,background .2s;cursor:pointer}
.site-btn:hover{transform:translateY(-1px)}
.site-btn--primary{background:var(--primary);color:#fff;box-shadow:0 4px 14px rgba(var(--rgb),.35)}
.site-btn--primary:hover{background:var(--primary-dark)}
.site-btn--outline{border:2px solid currentColor;background:transparent}
.site-btn--sm{padding:10px 20px;font-size:.875rem}
.site-btn--ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.25)}
.tag{display:inline-block;padding:4px 10px;border-radius:20px;font-size:.75rem;font-weight:600;background:rgba(var(--rgb),.1);color:var(--primary);margin-right:6px}

:root{--primary:#ea580c;--primary-dark:#c2410c;--navy:#1c1917;--navy-light:#292524;--rgb:234, 88, 12;--radius:6px;--wrap:1200px;--nav-h:56px}
body.site-body--bd{color:#fafaf9;background:#1c1917}
/* 深色顶栏 + 橙色底边 */
.bd-header{position:fixed;top:0;left:0;right:0;z-index:1000;background:var(--navy)}
.bd-header__bar{border-bottom:3px solid var(--primary)}
.bd-header__inner{display:flex;align-items:center;justify-content:space-between;height:var(--nav-h)}
.bd-logo{display:flex;align-items:center;gap:8px;font-weight:700;color:#fafaf9;font-size:1rem}
.bd-logo small{font-size:.65rem;color:var(--primary);font-weight:600;text-transform:uppercase;letter-spacing:.05em}
.bd-nav{display:flex;align-items:center;gap:2px}
.bd-nav a{padding:8px 14px;font-size:.85rem;color:#a8a29e;font-weight:500}
.bd-nav a:hover,.bd-nav a.is-active{color:#fafaf9}
.bd-cta{padding:8px 18px;background:var(--primary);color:#fff!important;font-weight:600;border-radius:var(--radius);margin-left:8px}
.bd-cta:hover{background:var(--primary-dark)}
.bd-toggle{display:none;flex-direction:column;gap:5px;padding:8px}
.bd-toggle span{width:22px;height:2px;background:#fafaf9;border-radius:2px}
/* Hero 企业暗色 */
.bd-hero{padding:calc(var(--nav-h) + 48px) 0 64px;background:var(--navy);border-bottom:1px solid #292524}
.bd-hero__grid{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.bd-hero h1{font-size:clamp(2rem,4.5vw,3rem);font-weight:700;line-height:1.12;margin-bottom:18px}
.bd-hero h1 em{font-style:normal;color:var(--primary)}
.bd-hero .lead{color:#a8a29e;line-height:1.7;margin-bottom:24px}
.bd-badges span{display:inline-block;padding:5px 10px;background:rgba(234,88,12,.15);color:#fb923c;border-radius:4px;font-size:.75rem;font-weight:600;margin:0 6px 6px 0}
/* 节点网格 */
.bd-nodes{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.bd-node{padding:18px;background:var(--navy-light);border:1px solid #44403c;border-radius:var(--radius);text-align:center}
.bd-node .flag{font-size:1.3rem}
.bd-node .name{font-weight:600;font-size:.9rem;margin:6px 0 2px}
.bd-node .cnt{font-size:.75rem;color:#a8a29e}
/* KPI 仪表盘 */
.bd-kpi{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.bd-kpi .cell{padding:24px;background:var(--navy-light);border-left:3px solid var(--primary);border-radius:var(--radius)}
.bd-kpi .val{font-size:1.75rem;font-weight:700;color:var(--primary)}
.bd-kpi .lbl{font-size:.8rem;color:#a8a29e;margin-top:4px}
/* 产品矩阵表 */
.bd-matrix{width:100%;border-collapse:collapse;font-size:.875rem}
.bd-matrix th,.bd-matrix td{padding:14px 16px;border:1px solid #44403c;text-align:left}
.bd-matrix th{background:var(--navy-light);color:#fafaf9;font-weight:600}
.bd-matrix td{color:#d6d3d1}
.bd-matrix .yes{color:#fb923c;font-weight:700}
/* 产品行 */
.bd-prod-rows .row{display:grid;grid-template-columns:200px 1fr 120px;gap:20px;padding:20px 0;border-bottom:1px solid #44403c;align-items:center}
.bd-prod-rows h4{font-weight:600;color:#fafaf9}
.bd-prod-rows p{font-size:.85rem;color:#a8a29e;margin-top:4px}
/* 关于：仪表盘 */
.bd-dash{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:40px}
.bd-dash .panel{padding:28px;background:var(--navy-light);border-radius:var(--radius);border-top:3px solid var(--primary)}
.bd-dash h3{font-size:.85rem;color:#a8a29e;text-transform:uppercase;letter-spacing:.04em}
.bd-dash .num{font-size:2rem;font-weight:700;color:#fafaf9;margin-top:8px}
/* 联系：四格渠道 */
.bd-channels{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.bd-channels .ch{padding:28px 20px;background:var(--navy-light);border:1px solid #44403c;border-radius:var(--radius);text-align:center;transition:border-color .2s}
.bd-channels .ch:hover{border-color:var(--primary)}
.bd-channels .ico{font-size:1.8rem;margin-bottom:10px}
.bd-channels h4{font-weight:600;margin-bottom:6px}
.bd-channels p{font-size:.8rem;color:#a8a29e}
/* 博客：表格式 */
.bd-blog table{width:100%;border-collapse:collapse}
.bd-blog th,.bd-blog td{padding:16px 12px;border-bottom:1px solid #44403c;text-align:left;font-size:.9rem}
.bd-blog th{color:#a8a29e;font-weight:600;font-size:.8rem;text-transform:uppercase}
.bd-blog td a{color:#fafaf9;font-weight:500}
.bd-blog td a:hover{color:var(--primary)}
.bd-blog .tag-cell span{padding:3px 8px;background:rgba(234,88,12,.15);color:#fb923c;border-radius:4px;font-size:.75rem}
/* 通用 */
.bd-section{padding:64px 0}
.bd-section--alt{background:var(--navy-light)}
.bd-head{margin-bottom:32px}
.bd-head h2{font-size:clamp(1.4rem,3vw,1.9rem);font-weight:700;color:#fafaf9}
.bd-head p{color:#a8a29e;margin-top:8px;font-size:.95rem}
.bd-prods{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}
.bd-prod{padding:22px;background:var(--navy-light);border:1px solid #44403c;border-radius:var(--radius)}
.bd-prod h3{font-size:.95rem;font-weight:600;margin-bottom:6px}
.bd-prod p{font-size:.8rem;color:#a8a29e}
.bd-page{padding:calc(var(--nav-h) + 40px) 0 40px;background:var(--navy-light);border-bottom:1px solid #44403c}
.bd-page h1{font-size:clamp(1.6rem,3.5vw,2.2rem);font-weight:700}
.bd-page p{margin-top:8px;color:#a8a29e}
.bd-cta-bar{padding:48px;background:linear-gradient(90deg,#431407,var(--navy));text-align:center;border-top:3px solid var(--primary)}
.bd-article{max-width:760px;margin:0 auto;padding:48px 24px 80px;color:#d6d3d1}
.bd-article h3{color:#fafaf9;margin:22px 0 10px}
.bd-article p{margin-bottom:14px;line-height:1.8}
.bd-article code{background:#292524;padding:2px 6px;border-radius:4px;color:#fb923c}
.bd-footer{background:#0c0a09;padding:48px 0 0;border-top:3px solid var(--primary)}
.bd-footer__main{display:grid;grid-template-columns:1.3fr 2fr;gap:40px;padding-bottom:36px}
.bd-footer__brand p{margin-top:14px;font-size:.85rem;color:#78716c;line-height:1.7}
.bd-footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.bd-footer h4{color:#fafaf9;font-size:.8rem;margin-bottom:12px;text-transform:uppercase;letter-spacing:.04em}
.bd-footer li{margin-bottom:8px;font-size:.85rem}
.bd-footer a{color:#a8a29e}
.bd-footer a:hover{color:var(--primary)}
.bd-footer__bar{border-top:1px solid #292524;padding:14px 0;font-size:.8rem;color:#78716c}
.bd-footer__bar .site-wrap{display:flex;justify-content:space-between}
@media(max-width:1024px){.bd-hero__grid,.bd-footer__main{grid-template-columns:1fr}.bd-nodes,.bd-kpi,.bd-prods,.bd-channels,.bd-dash{grid-template-columns:repeat(2,1fr)}.bd-footer__cols{grid-template-columns:1fr 1fr}.bd-prod-rows .row{grid-template-columns:1fr}}
@media(max-width:768px){
.site-nav__toggle{display:flex}
.site-nav__menu{position:fixed;top:var(--nav-h);left:0;right:0;flex-direction:column;padding:16px;gap:4px;transform:translateY(-120%);opacity:0;pointer-events:none;transition:transform .3s,opacity .3s}
.site-nav__menu.open{transform:translateY(0);opacity:1;pointer-events:auto}
}
@media(max-width:768px){.bd-toggle{display:flex}.bd-nav{position:fixed;top:var(--nav-h);left:0;right:0;background:var(--navy);flex-direction:column;padding:16px;border-bottom:3px solid var(--primary)}.bd-nodes,.bd-kpi,.bd-prods,.bd-channels,.bd-dash{grid-template-columns:1fr}.bd-blog table,.bd-blog thead{display:none}.bd-blog tr{display:block;padding:16px 0;border-bottom:1px solid #44403c}}

/* 滚动渐入 */
.anim-reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.anim-reveal.is-visible{opacity:1;transform:translateY(0)}
.anim-reveal-left{opacity:0;transform:translateX(-32px);transition:opacity .7s ease,transform .7s ease}
.anim-reveal-left.is-visible{opacity:1;transform:translateX(0)}
.anim-reveal-right{opacity:0;transform:translateX(32px);transition:opacity .7s ease,transform .7s ease}
.anim-reveal-right.is-visible{opacity:1;transform:translateX(0)}
/* Hero 图浮动 */
.anim-float{animation:siteFloat 5s ease-in-out infinite}
@keyframes siteFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
/* 网络节点脉冲 */
.anim-pulse{animation:sitePulse 3s ease-in-out infinite}
@keyframes sitePulse{0%,100%{box-shadow:0 0 0 0 rgba(var(--rgb),.25)}50%{box-shadow:0 0 0 12px rgba(var(--rgb),0)}}
/* 统计数字弹入 */
.anim-stat{animation:statPop .6s ease backwards}
@keyframes statPop{from{opacity:0;transform:scale(.85)}to{opacity:1;transform:scale(1)}}
/* 卡片悬停光晕 */
.anim-card{transition:transform .3s ease,box-shadow .3s ease}
.anim-card:hover{transform:translateY(-6px);box-shadow:0 16px 40px rgba(var(--rgb),.15)}
/* 图片容器 */
.site-img{border-radius:var(--radius);overflow:hidden;box-shadow:0 12px 40px rgba(0,0,0,.1)}
.site-img img,.site-img svg{width:100%;height:auto;display:block}
/* 按钮涟漪感 */
.site-btn{position:relative;overflow:hidden}
.site-btn::after{content:'';position:absolute;inset:0;background:linear-gradient(120deg,transparent 30%,rgba(255,255,255,.2) 50%,transparent 70%);transform:translateX(-100%);transition:transform .5s}
.site-btn:hover::after{transform:translateX(100%)}
/* 应用场景卡片（四站首页复用） */
.site-usecase{padding:20px;background:#fff;border:1px solid #e2e8f0;border-radius:12px}
.site-usecase .ico{font-size:1.5rem;margin-bottom:8px;display:block}
.site-usecase h4{font-weight:700;margin-bottom:6px;font-size:.95rem}
.site-usecase p{font-size:.85rem;color:#64748b;line-height:1.6}
/* 产品要点列表 */
.site-bullets{list-style:none;padding:0;margin:0}
.site-bullets li{padding:4px 0;font-size:.9rem;line-height:1.5}
/* 减动画偏好 */
@media(prefers-reduced-motion:reduce){.anim-float,.anim-pulse,.anim-stat{animation:none}.anim-reveal,.anim-reveal-left,.anim-reveal-right{opacity:1;transform:none}}