/* ===== Bcode 官网样式 ===== */
:root{
  --bg:#070b16;
  --bg-2:#0b1222;
  --panel:rgba(255,255,255,.04);
  --panel-2:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.10);
  --border-strong:rgba(255,255,255,.18);
  --text:#e8eefc;
  --muted:#9aa6c2;
  --muted-2:#6f7c9b;
  --cyan:#22d3ee;
  --violet:#8b5cf6;
  --grad:linear-gradient(120deg,#22d3ee 0%,#8b5cf6 100%);
  --radius:18px;
  --radius-sm:12px;
  --shadow:0 20px 60px rgba(0,0,0,.45);
  --maxw:1140px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Noto Sans SC","Rajdhani",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
h1,h2,h3{line-height:1.2;font-weight:700}
.grad-text{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;font-weight:700;font-size:15px;
  cursor:pointer;border:1px solid transparent;transition:.25s ease;white-space:nowrap;
}
.btn-primary{
  background:var(--grad);color:#06121f;
  box-shadow:0 10px 30px rgba(34,211,238,.25);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 40px rgba(139,92,246,.35)}
.btn-ghost{background:var(--panel);border-color:var(--border-strong);color:var(--text)}
.btn-ghost:hover{background:var(--panel-2);border-color:var(--cyan)}
.btn-block{width:100%}

/* ===== 导航 ===== */
.nav{
  position:sticky;top:0;z-index:50;
  backdrop-filter:blur(14px);
  background:rgba(7,11,22,.72);
  border-bottom:1px solid var(--border);
}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800}
.brand-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:var(--grad);color:#06121f;font-family:"Orbitron",sans-serif;font-weight:800;font-size:18px;
}
.brand-name{font-family:"Orbitron",sans-serif;font-size:20px;letter-spacing:1px}
.nav-links{display:flex;gap:26px;font-size:15px;color:var(--muted)}
.nav-links a{transition:.2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{padding:9px 20px;font-size:14px}

/* ===== Hero ===== */
.hero{position:relative;padding:84px 0 96px;overflow:hidden}
.hero-glow{
  position:absolute;inset:-20% -10% auto -10%;height:620px;
  background:radial-gradient(60% 60% at 70% 20%,rgba(139,92,246,.30),transparent 60%),
             radial-gradient(50% 50% at 20% 10%,rgba(34,211,238,.25),transparent 60%);
  filter:blur(20px);pointer-events:none;
}
.hero-grid{
  position:relative;display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.eyebrow{
  display:inline-block;font-family:"Orbitron",sans-serif;letter-spacing:2px;
  font-size:12px;color:var(--cyan);text-transform:uppercase;
  padding:6px 14px;border:1px solid var(--border-strong);border-radius:999px;margin-bottom:20px;
  background:var(--panel);
}
.hero h1{font-size:clamp(26px,3.4vw,40px);font-weight:800;letter-spacing:-.4px}
.lead{margin-top:22px;color:var(--muted);font-size:16.5px;max-width:560px;text-wrap:pretty}
.hero-actions{margin-top:32px;display:flex;gap:14px;flex-wrap:wrap}
.hero-stats{
  margin-top:42px;list-style:none;display:grid;grid-template-columns:repeat(4,1fr);gap:14px;
}
.hero-stats li{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 14px;
}
.hero-stats strong{display:block;font-size:15px}
.hero-stats span{font-size:12.5px;color:var(--muted-2)}

.hero-visual{position:relative}
.visual-card{
  position:relative;border-radius:24px;overflow:hidden;border:1px solid var(--border-strong);
  box-shadow:var(--shadow);background:var(--bg-2);
}
.visual-card img{width:100%;height:auto;display:block}
.visual-badge{
  position:absolute;font-size:12.5px;font-weight:600;padding:7px 12px;border-radius:10px;
  background:rgba(7,11,22,.7);border:1px solid var(--border-strong);backdrop-filter:blur(6px);
  color:var(--text);
}
.visual-badge.b1{top:16px;left:16px;color:var(--cyan)}
.visual-badge.b2{top:16px;right:16px;color:var(--violet)}
.visual-badge.b3{bottom:16px;left:16px}

/* ===== 通用 section ===== */
.section{padding:92px 0;scroll-margin-top:84px}
.section-alt{background:linear-gradient(180deg,var(--bg) 0%,var(--bg-2) 100%);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.section-head{max-width:720px;margin:0 auto 52px;text-align:center}
.section-head h2{font-size:clamp(26px,3.4vw,40px);margin-top:14px;text-wrap:balance}
.section-head p{margin-top:16px;color:var(--muted);font-size:16px}

/* ===== 定位对比 ===== */
.vs-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin-bottom:34px}
.vs-card{border-radius:var(--radius);padding:30px;border:1px solid var(--border);background:var(--panel)}
.vs-card h3{font-size:22px;margin-bottom:18px;font-family:"Orbitron",sans-serif;letter-spacing:1px}
.vs-card ul{list-style:none;display:flex;flex-direction:column;gap:12px}
.vs-card li{position:relative;padding-left:26px;color:var(--muted);font-size:15.5px}
.vs-card li::before{content:"";position:absolute;left:0;top:9px;width:14px;height:14px;border-radius:50%}
.vs-dim li::before{background:rgba(255,255,255,.12)}
.vs-bright{border-color:transparent;background:linear-gradient(160deg,rgba(34,211,238,.12),rgba(139,92,246,.12));box-shadow:var(--shadow)}
.vs-bright h3{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.vs-bright li{color:var(--text)}
.vs-bright li::before{background:var(--grad)}

.compare-table{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius);background:var(--panel)}
.compare-table table{width:100%;border-collapse:collapse;min-width:560px}
.compare-table th,.compare-table td{padding:16px 20px;text-align:left;font-size:15.5px;border-bottom:1px solid var(--border)}
.compare-table thead th{font-family:"Orbitron",sans-serif;letter-spacing:1px;font-size:14px;color:var(--muted)}
.compare-table tbody td:first-child{color:var(--text);font-weight:600}
.compare-table td:nth-child(2){color:var(--muted-2)}
.compare-table .hl{color:var(--text);background:rgba(34,211,238,.07)}
.compare-table thead .hl{color:var(--cyan);background:rgba(34,211,238,.10)}

/* ===== 核心能力网格 ===== */
.feature-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.feature-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:28px;transition:.25s;
}
.feature-card:hover{transform:translateY(-4px);border-color:var(--border-strong);background:var(--panel-2)}
.feature-icon{
  width:52px;height:52px;border-radius:14px;display:grid;place-items:center;font-size:26px;
  background:linear-gradient(140deg,rgba(34,211,238,.18),rgba(139,92,246,.18));
  border:1px solid var(--border-strong);margin-bottom:18px;
}
.feature-card h3{font-size:19px;margin-bottom:10px}
.feature-card p{color:var(--muted);font-size:15px}

/* ===== 协同派活 ===== */
.collab-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.collab-visual img{width:100%;height:auto;display:block;border-radius:var(--radius);border:1px solid var(--border-strong);box-shadow:var(--shadow)}
.steps{list-style:none;margin-top:26px;display:flex;flex-direction:column;gap:18px}
.steps li{display:flex;gap:16px;align-items:flex-start}
.step-n{
  flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:var(--grad);color:#06121f;font-weight:800;font-family:"Orbitron",sans-serif;
}
.steps strong{display:block;font-size:16.5px}
.steps p{color:var(--muted);font-size:14.5px;margin-top:2px}

/* ===== 可观测性 ===== */
.observe-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.observe-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:26px;transition:.25s}
.observe-card:hover{border-color:var(--border-strong);background:var(--panel-2)}
.observe-tag{display:inline-block;font-size:12px;font-weight:700;letter-spacing:1px;color:var(--cyan);
  padding:5px 12px;border:1px solid var(--border-strong);border-radius:999px;background:rgba(34,211,238,.07)}
.observe-card h3{font-size:18px;margin:14px 0 8px}
.observe-card>p{color:var(--muted);font-size:14.5px;margin-bottom:18px}
.mock-ui{background:var(--bg-2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:14px;display:flex;flex-direction:column;gap:9px}
.mock-row{font-size:13.5px;color:var(--muted);display:flex;align-items:center;gap:9px}
.mock-row .dot{width:9px;height:9px;border-radius:50%;flex:none}
.dot.c1{background:var(--cyan)}
.dot.c2{background:var(--violet)}
.dot.c3{background:#f5b14c}
.mock-ui.bars{flex-direction:row;align-items:flex-end;height:120px;gap:8px}
.mock-ui.bars .bar{flex:1;background:var(--grad);border-radius:6px 6px 0 0;opacity:.85}

/* ===== 下载 ===== */
.download-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:22px;max-width:760px;margin:0 auto}
.download-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:30px;text-align:center;transition:.25s}
.download-card:hover{border-color:var(--border-strong);background:var(--panel-2);transform:translateY(-4px)}
.dl-os{font-size:24px;font-weight:800;font-family:"Orbitron",sans-serif}
.dl-sub{color:var(--muted);font-size:14.5px;margin:8px 0 22px}
.dl-btn{width:100%}
.dl-meta{margin-top:14px;color:var(--muted-2);font-size:13px}
.download-note{margin-top:34px;max-width:760px;margin-left:auto;margin-right:auto;
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius-sm);padding:20px 24px}
.download-note p{color:var(--muted);font-size:14px;margin:6px 0}
.download-note code{background:var(--bg-2);padding:2px 8px;border-radius:6px;color:var(--cyan);font-size:13px}

/* ===== 合作 ===== */
.contact-wrap{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.contact-list{list-style:none;margin-top:22px;display:flex;flex-direction:column;gap:12px}
.contact-list li{color:var(--muted);font-size:16px}
.contact-card{background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);padding:30px}
.contact-divider{text-align:center;color:var(--muted-2);font-size:13px;margin:14px 0;position:relative}
.contact-divider::before,.contact-divider::after{content:"";position:absolute;top:50%;width:38%;height:1px;background:var(--border)}
.contact-divider::before{left:0}
.contact-divider::after{right:0}
.contact-extra{margin-top:18px;color:var(--muted-2);font-size:13.5px;text-align:center}

/* ===== 页脚 ===== */
.footer{border-top:1px solid var(--border);padding:36px 0;background:var(--bg-2)}
.footer-inner{display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center}
.footer-links{display:flex;gap:22px;font-size:14px;color:var(--muted);flex-wrap:wrap;justify-content:center}
.footer-links a:hover{color:var(--text)}
.copyright{color:var(--muted-2);font-size:13px}

/* ===== Hero 实景面板（背景图 + 真实数据面板，等比不裁切不变形） ===== */
.shot{
  position:relative;aspect-ratio:1/1;border-radius:24px;overflow:hidden;
  border:1px solid var(--border-strong);box-shadow:var(--shadow);background:#070b16;
}
.shot-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;display:block}
.shot-panel{
  position:absolute;left:14px;right:14px;bottom:14px;
  background:rgba(6,10,20,.80);border:1px solid rgba(255,255,255,.14);border-radius:16px;
  padding:14px 16px;backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.shot-head{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.shot-title{font-size:13px;font-weight:700;color:var(--text)}
.shot-live{display:flex;align-items:center;gap:6px;font-size:11.5px;color:#4ade80}
.shot-live i{width:6px;height:6px;border-radius:50%;background:#4ade80;box-shadow:0 0 0 4px rgba(74,222,128,.16);animation:bcodePulse 2s infinite}
@keyframes bcodePulse{0%,100%{opacity:1}50%{opacity:.35}}
.shot-kpi{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:12px}
.shot-kpi div{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:8px 10px}
.shot-kpi strong{display:block;font-size:15px;font-family:"Orbitron",sans-serif;letter-spacing:.4px;color:var(--text)}
.shot-kpi span{font-size:11px;color:var(--muted-2)}
.shot-rows{display:flex;flex-direction:column;gap:10px}
.shot-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:8px}
.shot-row em{font-style:normal;font-size:12.5px;color:var(--text)}
.sdot{width:8px;height:8px;border-radius:50%;background:#3b4a66;flex:none}
.sdot.on{background:var(--cyan);box-shadow:0 0 0 4px rgba(34,211,238,.14)}
.sdot.off{background:#4ade80}
.sbar{grid-column:1 / -1;height:5px;border-radius:999px;background:rgba(255,255,255,.08);overflow:hidden;margin-top:2px}
.sbar i{display:block;height:100%;border-radius:999px;background:var(--grad)}
.sbar i.full{background:#4ade80}
.shot-foot{display:flex;justify-content:space-between;gap:8px;margin-top:12px;padding-top:10px;border-top:1px solid rgba(255,255,255,.10);font-size:11.5px;color:var(--muted-2)}
.tag{font-size:11px;font-weight:700;padding:3px 9px;border-radius:999px;white-space:nowrap}
.tag.run{color:var(--cyan);background:rgba(34,211,238,.12);border:1px solid rgba(34,211,238,.3)}
.tag.done{color:#4ade80;background:rgba(74,222,128,.12);border:1px solid rgba(74,222,128,.3)}
.progress{grid-column:1 / -1;height:5px;border-radius:999px;background:rgba(255,255,255,.07);overflow:hidden;margin-top:2px}
.progress i{display:block;height:100%;border-radius:999px;background:var(--grad)}
/* ===== 协同指派面板 ===== */
.assign{
  background:linear-gradient(160deg,#0c1526,#0a1020);
  border:1px solid var(--border-strong);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow);
}
.assign-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.assign-title{font-size:13.5px;font-weight:700;font-family:"Orbitron",sans-serif;letter-spacing:.5px;color:var(--text)}
.assign-task{
  margin:12px 0 16px;font-size:13px;color:var(--muted);line-height:1.6;
  background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:10px;padding:10px 12px;
}
.assign-list{display:flex;flex-direction:column;gap:12px}
.assign-row{padding:12px;border:1px solid var(--border);border-radius:12px;background:rgba(255,255,255,.03)}
.ar-top{display:flex;align-items:center;gap:8px;margin-bottom:9px}
.ar-top em{font-style:normal;font-size:12.5px;color:var(--text);margin-right:auto}
.ar-state{font-size:11.5px;color:var(--muted-2);white-space:nowrap}
.ar-state.run{color:var(--cyan)}
.ar-state.done{color:#4ade80}
.tag.src{color:#b7a4ff;background:rgba(139,92,246,.16);border:1px solid rgba(139,92,246,.38)}
.assign-foot{
  display:flex;justify-content:space-between;gap:8px;margin-top:16px;padding-top:12px;
  border-top:1px dashed var(--border);font-size:11.5px;color:var(--muted-2);
}

/* ===== 数据安全 ===== */
.sec-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.sec-card{
  background:var(--panel);border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;transition:border-color .25s ease,transform .25s ease;
}
.sec-card:hover{border-color:var(--border-strong);transform:translateY(-3px)}
.sec-icon{
  width:44px;height:44px;border-radius:12px;display:grid;place-items:center;font-size:20px;
  background:linear-gradient(140deg,rgba(34,211,238,.16),rgba(139,92,246,.16));
  border:1px solid var(--border-strong);margin-bottom:16px;
}
.sec-card h3{font-size:17px;margin-bottom:10px}
.sec-card p{color:var(--muted);font-size:14.5px;line-height:1.7}
.sec-note{
  max-width:780px;margin:26px auto 0;text-align:center;font-size:15px;line-height:1.75;color:var(--muted);
  padding:16px 22px;border-radius:14px;border:1px solid rgba(34,211,238,.22);
  background:linear-gradient(120deg,rgba(34,211,238,.07),rgba(139,92,246,.07));
}
.sec-note strong{color:#7ff0ff;font-weight:700}
.sec-strip{
  display:flex;flex-wrap:wrap;gap:12px 26px;justify-content:center;margin-top:26px;
  padding:16px 20px;border:1px solid var(--border);border-radius:999px;background:var(--panel);
  font-size:13.5px;color:var(--muted);
}
.sec-strip span{white-space:nowrap;color:#b9e8f4}

/* ===== 联系卡片 ===== */
.contact-label{font-size:12.5px;letter-spacing:1px;color:var(--muted-2);text-transform:uppercase;margin-bottom:14px}
.copy-btn{margin-top:12px}
.copy-btn.done{color:#4ade80;border-color:rgba(74,222,128,.5)}

/* ===== 滚动揭示动画 ===== */
/* 仅在 JS 可用时启用揭示动画；无 JS 时内容默认可见，保证健壮性 */
.js .reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease}
.js .reveal.in{opacity:1;transform:none}

/* ===== 响应式 ===== */
@media (max-width:920px){
  .hero-grid,.vs-grid,.collab-wrap,.contact-wrap{grid-template-columns:1fr}
  .feature-grid,.observe-grid{grid-template-columns:repeat(2,1fr)}
  .sec-grid{grid-template-columns:1fr}
  .hero-visual{order:-1}
  .section{scroll-margin-top:120px}
  .nav-inner{height:auto;padding:10px 0;flex-wrap:wrap;row-gap:8px}
  .nav-links{
    display:flex;order:3;width:100%;overflow-x:auto;gap:18px;
    font-size:13.5px;padding-bottom:2px;-webkit-overflow-scrolling:touch;
    scrollbar-width:none;
  }
  .nav-links::-webkit-scrollbar{display:none}
  .nav-links{-webkit-mask-image:linear-gradient(90deg,#000 92%,rgba(0,0,0,.15))}
  .nav-links a{white-space:nowrap;flex:none}
}
@media (max-width:600px){
  .feature-grid,.observe-grid,.download-grid{grid-template-columns:1fr}
  .hero-stats{grid-template-columns:repeat(2,1fr)}
  .section{padding:64px 0}
  .lead{font-size:16px}
  .nav-cta{display:none}
  .shot{aspect-ratio:4/5}
  .shot-panel{left:10px;right:10px;bottom:10px;padding:11px 12px;border-radius:13px}
  .shot-kpi strong{font-size:13px}
  .shot-row em{font-size:11.5px}
  .shot-foot{font-size:10.5px;flex-wrap:wrap;gap:4px}
  .sec-strip{border-radius:16px;padding:14px 16px;font-size:12.5px;gap:10px 16px}
  .assign{padding:16px}
  .ar-top{flex-wrap:wrap}
}