:root{--blue:#2f6bff;--violet:#7a2bff;--grad:linear-gradient(135deg,#2f6bff,#7a2bff);--dark:#12172b;--text:#1c2333;--muted:#5b6478;--bg:#f5f8ff;--card:#fff;--radius:16px;--shadow:0 10px 34px rgba(47,107,255,.12);--orange:#ff8a2e}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--text);background:var(--bg);line-height:1.75}
img{max-width:100%;display:block}
a{text-decoration:none;color:inherit}
ul{list-style:none}
.container{width:min(1120px,92%);margin:0 auto}
.btn{display:inline-block;background:var(--grad);color:#fff;padding:12px 30px;border-radius:999px;font-weight:700;border:none;cursor:pointer;transition:transform .2s,box-shadow .2s;font-size:.95rem}
.btn:hover{transform:translateY(-3px);box-shadow:0 12px 26px rgba(74,58,255,.38)}
.btn-orange{background:linear-gradient(135deg,#ff9f2e,#ff6a2e)}
.btn-ghost{background:rgba(255,255,255,.14);border:1.5px solid rgba(255,255,255,.75);color:#fff}
.btn-ghost:hover{background:rgba(255,255,255,.25);box-shadow:none}
.section{padding:72px 0}
.section-title{text-align:center;font-size:clamp(1.5rem,3vw,2rem);margin-bottom:10px}
.section-sub{text-align:center;color:var(--muted);margin-bottom:44px}
.badge-tag{display:inline-block;background:#eef3ff;color:var(--blue);font-size:.8rem;font-weight:700;padding:3px 14px;border-radius:999px;margin-bottom:10px}
/* ===== 导航 ===== */
.nav{position:fixed;top:0;left:0;right:0;z-index:200;transition:background .3s,box-shadow .3s;background:rgba(255,255,255,.6)}
.nav.scrolled{background:rgba(16,20,40,.92);box-shadow:0 4px 20px rgba(0,0,0,.18)}
.nav.scrolled .nav-link,.nav.scrolled .nav-logo span{color:#fff}
.nav.scrolled .drop-panel{top:56px}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.nav-logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:1.15rem}
.nav-logo img{height:34px}
.nav-logo span{color:var(--text)}
.nav-menu{display:flex;align-items:center;gap:6px}
.nav-item{position:relative}
.nav-link{display:flex;align-items:center;gap:4px;padding:10px 16px;font-weight:600;font-size:.95rem;color:var(--text);border-radius:10px;transition:color .2s;cursor:pointer}
.nav-link:hover{color:var(--blue)}
.nav.scrolled .nav-link:hover{color:#8fb0ff}
.arrow{font-size:.7rem;transition:transform .3s;display:inline-block}
.nav-item:hover .arrow,.nav-item.open .arrow{transform:rotate(180deg)}
.drop-panel{position:absolute;top:52px;left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border-radius:14px;box-shadow:0 16px 40px rgba(18,23,43,.16);padding:10px;min-width:190px;opacity:0;visibility:hidden;transition:all .25s}
.nav-item:hover .drop-panel,.nav-item.open .drop-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.drop-panel a{display:block;padding:10px 16px;border-radius:9px;font-size:.9rem;color:var(--text);white-space:nowrap}
.drop-panel a:hover{background:#f0f5ff;color:var(--blue)}
.nav-cta{margin-left:10px}
.hamburger{display:none;flex-direction:column;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.hamburger span{width:24px;height:2.5px;background:var(--text);border-radius:2px;transition:.3s}
.nav.scrolled .hamburger span{background:#fff}
/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#2f6bff 0%,#5a3bff 55%,#7a2bff 100%);color:#fff;padding:150px 0 90px}
.hero::before,.hero::after{content:"";position:absolute;border-radius:50%;background:rgba(255,255,255,.1);animation:float 8s ease-in-out infinite}
.hero::before{width:420px;height:420px;top:-150px;left:-120px}
.hero::after{width:300px;height:300px;bottom:-110px;right:-70px;animation-delay:-4s}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(26px)}}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;position:relative;z-index:1}
.hero h1{font-size:clamp(1.9rem,4vw,2.9rem);line-height:1.25;margin:14px 0 16px}
.hero .sub{font-size:1.05rem;opacity:.92;margin-bottom:28px}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap}
.btn-big{font-size:1.05rem;padding:14px 38px}
.hero-stats{display:flex;gap:34px;margin-top:36px;flex-wrap:wrap}
.stat b{display:block;font-size:1.5rem;font-weight:800}
.stat span{font-size:.82rem;opacity:.8}
.hero-os{margin-top:18px;font-size:.82rem;opacity:.75}
/* ===== 演示器 ===== */
.demo{background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);backdrop-filter:blur(14px);border-radius:22px;padding:22px;box-shadow:0 24px 60px rgba(0,0,0,.28)}
.demo-top{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.demo-top .st{font-size:.85rem;opacity:.85}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;background:#8a93a8;margin-right:6px;transition:.3s}
.dot.on{background:#2ee27a;box-shadow:0 0 10px #2ee27a}
.gauge{position:relative;width:200px;height:110px;margin:6px auto 4px;overflow:hidden}
.gauge svg{width:100%;height:100%}
.needle{transform-origin:100px 100px;transition:transform 1.4s cubic-bezier(.22,1,.36,1)}
.gauge-val{position:absolute;bottom:0;left:0;right:0;text-align:center;font-weight:800;font-size:1.6rem}
.gauge-val small{display:block;font-size:.72rem;font-weight:400;opacity:.75}
.demo-row{display:flex;gap:10px;margin:14px 0}
.node{flex:1;background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.2);color:#fff;border-radius:10px;padding:9px 4px;font-size:.8rem;cursor:pointer;text-align:center;transition:.2s}
.node:hover{background:rgba(255,255,255,.22)}
.node.on{background:#fff;color:var(--blue);font-weight:700;border-color:#fff}
.demo-metrics{display:flex;justify-content:space-between;font-size:.82rem;opacity:.9;margin-bottom:14px}
.connect-btn{width:100%;padding:13px;border:none;border-radius:12px;background:#fff;color:var(--blue);font-weight:800;font-size:1rem;cursor:pointer;transition:.25s}
.connect-btn:hover{transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,0,0,.25)}
.connect-btn.on{background:#2ee27a;color:#083b1d}
.demo-switch{display:flex;align-items:center;justify-content:space-between;margin-top:14px;font-size:.85rem}
.sw{position:relative;width:44px;height:24px;background:rgba(255,255,255,.25);border-radius:999px;cursor:pointer;transition:.25s}
.sw::after{content:"";position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;background:#fff;transition:.25s}
.sw.on{background:#2ee27a}
.sw.on::after{left:23px}
/* ===== 功能卡 ===== */
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.card{background:var(--card);border-radius:var(--radius);padding:32px 26px;box-shadow:var(--shadow);transition:transform .25s}
.card:hover{transform:translateY(-6px)}
.card .icon{font-size:2.3rem;display:block;margin-bottom:12px}
.card h3{font-size:1.1rem;margin-bottom:8px}
.card p{color:var(--muted);font-size:.92rem}
/* 场景卡 */
.scene{position:relative;overflow:hidden}
.scene .num{position:absolute;top:14px;right:18px;font-size:2.6rem;font-weight:800;color:#eef3ff}
/* 节点板块 */
.nodes-sec{background:linear-gradient(160deg,#12172b,#1c2450);color:#fff}
.nodes-sec .section-sub{opacity:.75}
.node-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.node-card{background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);border-radius:14px;padding:20px;text-align:center;transition:.25s}
.node-card:hover{background:rgba(255,255,255,.13);transform:translateY(-4px)}
.node-card .flag{font-size:1.8rem}
.node-card b{display:block;margin:6px 0 2px}
.node-card span{font-size:.78rem;opacity:.7}
/* 三步上手 */
.steps{counter-reset:s}
.step{position:relative;padding-left:74px;margin-bottom:26px}
.step::before{counter-increment:s;content:counter(s);position:absolute;left:0;top:0;width:52px;height:52px;border-radius:16px;background:var(--grad);color:#fff;font-weight:800;font-size:1.3rem;display:flex;align-items:center;justify-content:center}
.step h3{margin-bottom:4px;font-size:1.05rem}
.step p{color:var(--muted);font-size:.92rem}
/* 价格 */
.price-card{text-align:center;position:relative}
.price-card.hot{border:2px solid var(--blue);transform:scale(1.03)}
.price-card.hot:hover{transform:scale(1.03) translateY(-6px)}
.hot-badge{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:var(--grad);color:#fff;font-size:.78rem;font-weight:700;padding:4px 16px;border-radius:999px}
.price{font-size:2.4rem;font-weight:800;color:var(--blue);margin:10px 0 2px}
.price small{font-size:.9rem;color:var(--muted);font-weight:400}
.price-card ul{margin:18px 0 24px;font-size:.9rem;text-align:left}
.price-card li{padding:7px 0;border-bottom:1px dashed #e6ebf5}
.price-card li::before{content:"✔ ";color:var(--blue);font-weight:700}
.price-card .btn{display:block;text-align:center}
/* FAQ */
.faq-item{background:#fff;border-radius:12px;margin-bottom:12px;box-shadow:0 4px 14px rgba(28,35,51,.06);overflow:hidden}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;font-weight:700;cursor:pointer;font-size:.98rem}
.faq-q::after{content:"+";font-size:1.4rem;color:var(--blue);transition:transform .25s}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;color:var(--muted);padding:0 20px;font-size:.92rem}
.faq-item.open .faq-a{padding-bottom:16px}
/* 评价 */
.t-card blockquote{font-size:.93rem;color:var(--text);margin-bottom:14px}
.t-user{display:flex;align-items:center;gap:10px}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--grad);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.t-user b{display:block;font-size:.9rem}
.t-user span{font-size:.76rem;color:var(--muted)}
.stars{color:#ffb02e;font-size:.85rem;letter-spacing:1px}
/* 新闻预览 */
.news-card{overflow:hidden;display:flex;flex-direction:column}
.news-card img{height:170px;width:100%;object-fit:cover}
.news-card .body{padding:20px 22px;flex:1;display:flex;flex-direction:column}
.news-card .date{font-size:.78rem;color:var(--muted)}
.news-card h3{font-size:1rem;margin:8px 0}
.news-card h3 a:hover{color:var(--blue)}
.news-card p{font-size:.86rem;color:var(--muted);flex:1}
.news-card .more{font-size:.85rem;color:var(--blue);font-weight:700;margin-top:12px}
/* CTA + 页脚 */
.cta-band{background:var(--grad);color:#fff;text-align:center;padding:70px 0}
.cta-band h2{font-size:clamp(1.5rem,3vw,2.1rem);margin-bottom:12px}
.cta-band p{opacity:.9;margin-bottom:26px}
footer{background:var(--dark);color:#aeb6c8;padding:60px 0 26px}
.foot-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:36px;margin-bottom:36px}
.foot-grid h4{color:#fff;font-size:.98rem;margin-bottom:14px}
.foot-grid a{display:block;font-size:.88rem;padding:4px 0}
.foot-grid a:hover{color:#fff}
.foot-logo{display:flex;align-items:center;gap:10px;color:#fff;font-weight:800;font-size:1.1rem;margin-bottom:12px}
.foot-logo img{height:32px}
.foot-desc{font-size:.85rem;opacity:.75}
.copy{border-top:1px solid rgba(255,255,255,.1);padding-top:20px;text-align:center;font-size:.8rem;opacity:.6}
/* 下载页 */
.dl-hero{background:var(--grad);color:#fff;padding:140px 0 80px;position:relative;overflow:hidden}
.dl-hero::after{content:"";position:absolute;width:340px;height:340px;border-radius:50%;background:rgba(255,255,255,.1);bottom:-130px;right:-80px}
.dl-meta{display:flex;gap:26px;margin:22px 0;font-size:.88rem;opacity:.9;flex-wrap:wrap}
.dl-meta span::before{content:"✓ ";font-weight:700}
table.cmp{width:100%;border-collapse:collapse;min-width:640px;background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow)}
.cmp th,.cmp td{padding:14px 14px;text-align:center;border-bottom:1px solid #eef1f8;font-size:.92rem}
.cmp th{background:#f0f5ff;font-weight:700}
.cmp td:first-child{text-align:left;font-weight:600}
.table-wrap{overflow-x:auto}
.ver-card{display:flex;justify-content:space-between;align-items:center;gap:18px;flex-wrap:wrap}
.ver-card ul{font-size:.88rem;color:var(--muted);margin:8px 0}
.ver-card li::before{content:"✓ ";color:var(--blue);font-weight:700}
/* 新闻页 */
.breadcrumb{font-size:.85rem;color:var(--muted);padding:100px 0 0}
.breadcrumb a:hover{color:var(--blue)}
.article-layout{display:grid;grid-template-columns:1fr 320px;gap:40px;align-items:start;padding:18px 0 70px}
.article h1{font-size:clamp(1.5rem,3vw,2rem);line-height:1.35;margin:10px 0 8px}
.article .meta{font-size:.85rem;color:var(--muted);margin-bottom:22px}
.article .cover{border-radius:var(--radius);width:100%;margin-bottom:26px}
.article h2{font-size:1.3rem;margin:34px 0 14px;padding-left:12px;border-left:4px solid var(--blue)}
.article p{margin-bottom:16px;color:#333c52;font-size:.97rem;text-align:justify}
.article img.inline{border-radius:12px;margin:8px 0 20px}
.quote{background:#f0f5ff;border-left:4px solid var(--blue);border-radius:0 12px 12px 0;padding:16px 20px;margin:18px 0;color:#33415e}
.quote b{color:var(--blue)}
.pager{display:flex;justify-content:space-between;gap:12px;margin:36px 0 20px;flex-wrap:wrap}
.pager a{background:#fff;border-radius:12px;padding:12px 18px;font-size:.88rem;box-shadow:var(--shadow);max-width:48%}
.pager a:hover{color:var(--blue)}
.related h3,.comments h3{font-size:1.15rem;margin:34px 0 16px}
.related-list{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.related-list a{background:#fff;border-radius:12px;padding:16px;font-size:.88rem;box-shadow:0 4px 14px rgba(28,35,51,.07);display:block}
.related-list a:hover{color:var(--blue)}
.comment{display:flex;gap:12px;background:#fff;border-radius:12px;padding:16px;margin-bottom:12px;box-shadow:0 4px 12px rgba(28,35,51,.06)}
.comment .c-body b{font-size:.9rem}
.comment .c-body .c-date{font-size:.76rem;color:var(--muted);margin-left:8px}
.comment .c-body p{font-size:.88rem;color:#414a60;margin-top:4px}
.sidebar{position:sticky;top:84px;display:flex;flex-direction:column;gap:20px}
.sb-card{background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:22px}
.sb-card h4{font-size:1rem;margin-bottom:16px;padding-left:10px;border-left:4px solid var(--blue)}
.toc{border-left:2px solid #e6ebf5;padding-left:0}
.toc a{display:block;position:relative;padding:7px 0 7px 18px;font-size:.88rem;color:var(--muted)}
.toc a::before{content:"";position:absolute;left:-6px;top:14px;width:10px;height:10px;border-radius:50%;background:#c9d4ea}
.toc a.act{color:var(--blue);font-weight:700}
.toc a.act::before{background:var(--blue);box-shadow:0 0 0 3px rgba(47,107,255,.2)}
.hot-item{display:flex;gap:10px;align-items:flex-start;padding:8px 0;font-size:.87rem}
.hot-item .rk{flex-shrink:0;width:22px;height:22px;border-radius:6px;background:#e3e8f2;color:#8a93a8;font-size:.75rem;font-weight:800;display:flex;align-items:center;justify-content:center;transition:transform .2s}
.hot-item:nth-child(1) .rk{background:linear-gradient(135deg,#ff5f2e,#ff8a2e);color:#fff}
.hot-item:nth-child(2) .rk{background:linear-gradient(135deg,#ff9f2e,#ffc12e);color:#fff}
.hot-item:nth-child(3) .rk{background:linear-gradient(135deg,#2f6bff,#7a2bff);color:#fff}
.hot-item:hover .rk{transform:scale(1.15)}
.hot-item:hover a{color:var(--blue)}
.tags{display:flex;flex-wrap:wrap;gap:8px}
.tag{background:#f0f5ff;color:#5b6478;font-size:.8rem;padding:5px 13px;border-radius:999px;border:1.5px solid transparent;transition:.2s}
.tag:hover{color:var(--blue);border-color:var(--blue)}
/* sitemap.html */
.sm-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:10px}
.sm-grid a{background:#fff;border-radius:10px;padding:13px 18px;font-size:.92rem;box-shadow:var(--shadow);display:block}
.sm-grid a:hover{color:var(--blue)}
/* 响应式 992 */
@media(max-width:992px){
.nav-menu{position:fixed;top:64px;right:-100%;width:min(320px,86vw);height:calc(100vh - 64px);background:#fff;flex-direction:column;align-items:stretch;padding:20px;gap:4px;transition:right .3s;box-shadow:-8px 0 30px rgba(0,0,0,.12);overflow-y:auto}
.nav-menu.show{right:0}
.nav-item{width:100%}
.nav-link{justify-content:space-between}
.drop-panel{position:static;transform:none;opacity:1;visibility:hidden;display:none;box-shadow:none;padding:0 0 0 14px;min-width:0}
.nav-item.open .drop-panel{display:block;visibility:visible}
.hamburger{display:flex}
.hero-grid{grid-template-columns:1fr;gap:40px}
.grid-3{grid-template-columns:repeat(2,1fr)}
.node-grid{grid-template-columns:repeat(2,1fr)}
.foot-grid{grid-template-columns:repeat(2,1fr)}
.article-layout{grid-template-columns:1fr}
.sidebar{position:static}
.nav.scrolled .nav-menu{background:#fff}
.nav.scrolled .nav-menu .nav-link{color:var(--text)}
}
/* 768 */
@media(max-width:768px){
.grid-3,.grid-2{grid-template-columns:1fr}
.hero{padding:120px 0 70px}
.section{padding:56px 0}
.price-card.hot{transform:none}
.price-card.hot:hover{transform:translateY(-6px)}
.related-list{grid-template-columns:1fr}
.pager a{max-width:100%}
}
/* 480 */
@media(max-width:480px){
.node-grid{grid-template-columns:1fr 1fr}
.foot-grid{grid-template-columns:1fr}
.hero-btns .btn{width:100%;text-align:center}
.hero-stats{gap:20px}
.stat b{font-size:1.2rem}
.gauge{width:170px}
h1{letter-spacing:0}
}