/* ============================================================
   坚果盾 · 全站公共样式 common.css
   ============================================================
   包含：
   1. CSS 变量
   2. 基础重置
   3. 导航栏 + 移动端菜单
   4. 面包屑
   5. 页脚
   6. 通用按钮
   7. section 标题
   8. Hero 首屏（首页/产品页/方案页共用）
   9. 核心优势 features-grid
   10. 场景卡 scene-grid
   11. 实时监控 live-monitor
   12. FAQ 手风琴
   13. CTA 条
   14. 动画
   15. 响应式
   ============================================================ */

/* ========== 1. CSS 变量 ========== */
:root{
  --primary:#165DFF;
  --primary-dark:#0E42C8;
  --primary-light:#E8F0FF;
  --accent:#00C48C;
  --accent-light:#E6FBF5;
  --danger:#FF4D4F;
  --warning:#FF9F1C;
  --dark:#0A0E27;
  --dark-2:#141A3A;
  --gray-1:#F5F7FA;
  --gray-2:#E5E8F0;
  --gray-3:#C9CFDE;
  --gray-4:#8A93A8;
  --gray-5:#5A6278;
  --radius-sm:8px;
  --radius:12px;
  --radius-lg:16px;
  --radius-xl:24px;
  --shadow-sm:0 2px 8px rgba(10,14,39,.06);
  --shadow:0 4px 20px rgba(10,14,39,.08);
  --shadow-lg:0 12px 40px rgba(10,14,39,.12);
  --transition:all .25s cubic-bezier(.4,0,.2,1);
}


*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.6;color:#1A1A2E;background:#F5F7FA;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  padding-top:68px;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s}
button{font-family:inherit;cursor:pointer;border:none;background:none}
ul,ol{list-style:none}
.container{max-width:1280px;margin:0 auto;padding:0 24px}

:root{
  --primary:#165DFF;--primary-dark:#0E42C8;--primary-light:#E8F0FF;
  --accent:#00C48C;--accent-light:#E6FBF5;
  --danger:#FF4D4F;--warning:#FF9F1C;
  --dark:#0A0E27;--dark-2:#141A3A;
  --gray-1:#F5F7FA;--gray-2:#E5E8F0;--gray-3:#C9CFDE;--gray-4:#8A93A8;--gray-5:#5A6278;
  --radius-sm:8px;--radius:12px;--radius-lg:16px;--radius-xl:24px;
  --shadow-sm:0 2px 8px rgba(10,14,39,.06);
  --shadow:0 4px 20px rgba(10,14,39,.08);
  --shadow-lg:0 12px 40px rgba(10,14,39,.12);
  --transition:all .25s cubic-bezier(.4,0,.2,1);
}

.navbar{position:fixed;top:0;left:0;right:0;z-index:1000;background:rgba(255,255,255,.98);border-bottom:1px solid rgba(10,14,39,.06);box-shadow:0 1px 3px rgba(10,14,39,.03);}
.nav-wrap{display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#165DFF 0%,#00C48C 100%);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:800;font-size:18px;box-shadow:0 4px 12px rgba(22,93,255,.3);}
.logo-text{font-size:19px;font-weight:700;color:var(--dark);letter-spacing:-.3px}
.logo-text em{font-style:normal;color:var(--primary)}

.nav-links{display:flex;align-items:center;gap:4px;flex:1}
.nav-links > a{padding:8px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--gray-5);transition:var(--transition);white-space:nowrap;}
.nav-links > a:hover,.nav-links > a.active{color:var(--primary);background:var(--primary-light)}
.nav-dropdown{position:relative}
.nav-dropdown > button{display:flex;align-items:center;gap:4px;padding:8px 14px;border-radius:8px;font-size:15px;font-weight:500;color:var(--gray-5);cursor:pointer;transition:var(--transition);white-space:nowrap;background:none;border:none;font-family:inherit;}
.nav-dropdown > button:hover,.nav-dropdown.open > button{color:var(--primary);background:var(--primary-light)}
.nav-dropdown .dropdown-menu{position:absolute;top:calc(100% + 8px);left:0;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--gray-2);padding:12px;min-width:220px;opacity:0;visibility:hidden;transform:translateY(-8px);transition:var(--transition);z-index:100;}
.nav-dropdown.open .dropdown-menu{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown-menu a{display:flex;align-items:center;gap:10px;padding:11px 14px;border-radius:10px;font-size:14.5px;color:var(--gray-5);transition:var(--transition);}
.dropdown-menu a:hover,.dropdown-menu a:focus-visible{background:var(--primary-light);color:var(--primary);outline:none;}
.dropdown-menu a .ico{width:32px;height:32px;border-radius:8px;flex-shrink:0;background:var(--primary-light);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;}

.nav-cta{display:flex;align-items:center;gap:10px;flex-shrink:0}
.btn-ghost{padding:9px 18px;border-radius:10px;font-size:14.5px;font-weight:500;color:var(--primary);border:1.5px solid var(--primary);transition:var(--transition);background:#fff;}
.btn-ghost:hover{background:var(--primary-light)}
.btn-primary-sm{padding:9px 20px;border-radius:10px;font-size:14.5px;font-weight:600;color:#fff;background:linear-gradient(135deg,#165DFF 0%,#0E42C8 100%);transition:var(--transition);box-shadow:0 4px 12px rgba(22,93,255,.3);}
.btn-primary-sm:hover{transform:translateY(-1px);box-shadow:0 6px 16px rgba(22,93,255,.4)}

.mobile-menu-btn{display:none;font-size:22px;color:var(--dark);padding:8px}

#mobileNav{display:none;background:#fff;border-bottom:1px solid var(--gray-2);padding:8px 24px 20px;overscroll-behavior:contain;}
#mobileNav.show{display:block}
#mobileNav > a{display:block;padding:14px 0;font-size:15px;color:var(--gray-5);border-bottom:1px solid var(--gray-1);transition:var(--transition);}
#mobileNav > a:last-child{border-bottom:none}
#mobileNav > a:hover{color:var(--primary)}
.mobile-nav-item{border-bottom:1px solid var(--gray-1)}
.mobile-nav-item:last-child{border-bottom:none}
.mobile-nav-toggle{display:flex;align-items:center;justify-content:space-between;width:100%;padding:14px 0;font-size:15px;color:var(--gray-5);background:none;border:none;font-family:inherit;text-align:left;transition:var(--transition);}
.mobile-nav-toggle:hover{color:var(--primary)}
.mobile-nav-toggle .arrow{font-size:12px;color:var(--gray-4);transition:transform .25s cubic-bezier(.4,0,.2,1);}
.mobile-nav-item.open .mobile-nav-toggle{color:var(--primary)}
.mobile-nav-item.open .mobile-nav-toggle .arrow{transform:rotate(180deg)}
.mobile-submenu{display:none;padding:0 0 10px 16px;}
.mobile-nav-item.open .mobile-submenu{display:block;animation:fadeDown .25s ease}
@keyframes fadeDown{from{opacity:0;transform:translateY(-6px)}to{opacity:1;transform:translateY(0)}}
.mobile-submenu a{display:block;padding:11px 0;font-size:14.5px;color:var(--gray-5);border-bottom:1px solid var(--gray-1);transition:var(--transition);}
.mobile-submenu a:last-child{border-bottom:none}
.mobile-submenu a:hover{color:var(--primary);padding-left:4px}

.breadcrumb{padding:18px 0;font-size:13.5px;}
.breadcrumb ol{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.breadcrumb li{display:flex;align-items:center;color:var(--gray-4);}
.breadcrumb a{color:var(--gray-5);}
.breadcrumb a:hover{color:var(--primary);}
.breadcrumb .sep{margin:0 4px;color:var(--gray-3);}
.breadcrumb [aria-current="page"]{color:var(--dark);font-weight:600;}

.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#0A0E27 0%,#141A3A 50%,#0E1E4A 100%);padding:80px 0 88px;color:#fff;}
.hero::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle at 20% 20%,rgba(22,93,255,.28) 0%,transparent 45%),radial-gradient(circle at 80% 70%,rgba(0,196,140,.18) 0%,transparent 45%);pointer-events:none;}
.hero::after{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:56px 56px;mask-image:radial-gradient(ellipse at center,black 30%,transparent 75%);-webkit-mask-image:radial-gradient(ellipse at center,black 30%,transparent 75%);pointer-events:none;}
.hero .container{position:relative;z-index:2}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 16px;border-radius:999px;background:rgba(0,196,140,.12);border:1px solid rgba(0,196,140,.3);color:#4EFFC0;font-size:13.5px;font-weight:600;margin-bottom:22px;letter-spacing:.2px;}
.hero-badge .dot{width:7px;height:7px;border-radius:50%;background:#00C48C;box-shadow:0 0 0 0 rgba(0,196,140,.7);animation:pulse 2s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(0,196,140,.7)}70%{box-shadow:0 0 0 10px rgba(0,196,140,0)}100%{box-shadow:0 0 0 0 rgba(0,196,140,0)}}
.hero h1{font-size:clamp(30px,4.4vw,50px);font-weight:800;line-height:1.18;letter-spacing:-.02em;margin-bottom:20px;background:linear-gradient(135deg,#FFFFFF 30%,#A8C4FF 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero h1 .h1-top{display:block}
.hero h1 .hl{background:linear-gradient(135deg,#4EFFC0 0%,#00C48C 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;}
.hero-sub{font-size:clamp(15px,1.6vw,17px);line-height:1.7;color:rgba(255,255,255,.72);max-width:680px;margin-bottom:28px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:32px}
.hero-tag{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;border-radius:10px;background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.12);font-size:14px;color:rgba(255,255,255,.9);font-weight:500;backdrop-filter:blur(8px);}
.hero-tag svg{width:15px;height:15px;color:#4EFFC0;flex-shrink:0}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px}
.btn-hero{display:inline-flex;align-items:center;gap:8px;padding:15px 34px;border-radius:12px;font-size:16px;font-weight:600;transition:var(--transition);letter-spacing:.2px;}
.btn-hero-primary{background:linear-gradient(135deg,#165DFF 0%,#0E42C8 100%);color:#fff;box-shadow:0 8px 28px rgba(22,93,255,.45);}
.btn-hero-primary:hover{transform:translateY(-2px);box-shadow:0 12px 36px rgba(22,93,255,.55)}
.btn-hero-outline{background:rgba(255,255,255,.06);color:#fff;border:1.5px solid rgba(255,255,255,.25);backdrop-filter:blur(8px);}
.btn-hero-outline:hover{background:rgba(255,255,255,.12);border-color:rgba(255,255,255,.4)}
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:56px;padding-top:36px;border-top:1px solid rgba(255,255,255,.1);}
.hero-stat-num{font-size:clamp(24px,2.8vw,34px);font-weight:800;color:#fff;letter-spacing:-.02em;line-height:1.2;}
.hero-stat-num span{color:#4EFFC0;font-size:.72em;margin-left:2px}
.hero-stat-label{font-size:13.5px;color:rgba(255,255,255,.55);margin-top:4px}
.hero-stat-note{font-size:11px;color:rgba(255,255,255,.35);margin-top:2px;line-height:1.4;}

.section{padding:80px 0}
.section-alt{background:#fff}
.section-title{text-align:center;max-width:780px;margin:0 auto 52px}
.section-title h2{font-size:clamp(24px,2.8vw,36px);font-weight:800;color:var(--dark);letter-spacing:-.02em;line-height:1.3;margin-bottom:14px;}
.section-title p{font-size:16px;color:var(--gray-5);line-height:1.75}
.section-title .accent-bar{width:56px;height:4px;border-radius:2px;background:linear-gradient(90deg,#165DFF,#00C48C);margin:0 auto 20px;}

.products-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:28px;}
.product-card{background:#fff;border-radius:var(--radius-xl);padding:40px 36px;border:1.5px solid var(--gray-2);transition:var(--transition);display:flex;flex-direction:column;position:relative;overflow:hidden;}
.product-card::before{content:'';position:absolute;top:0;left:0;right:0;height:4px;background:linear-gradient(90deg,var(--primary),var(--accent));transform:scaleX(0);transform-origin:left;transition:transform .35s ease;}
.product-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:transparent}
.product-card:hover::before{transform:scaleX(1)}
.product-icon{width:64px;height:64px;border-radius:18px;display:flex;align-items:center;justify-content:center;margin-bottom:24px;flex-shrink:0;}
.product-icon.blue{background:var(--primary-light);color:var(--primary)}
.product-icon.green{background:var(--accent-light);color:var(--accent)}
.product-icon svg{width:32px;height:32px}
.product-card h3{font-size:24px;font-weight:800;color:var(--dark);margin-bottom:10px}
.product-card .product-desc{font-size:15px;color:var(--gray-5);line-height:1.75;margin-bottom:20px;flex:1}
.product-card ul{display:flex;flex-direction:column;gap:10px;margin-bottom:28px}
.product-card ul li{display:flex;align-items:center;gap:8px;font-size:14.5px;color:var(--gray-5);}
.product-card ul li svg{width:16px;height:16px;color:var(--accent);flex-shrink:0}
.btn-product{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 28px;border-radius:12px;font-size:15.5px;font-weight:700;transition:var(--transition);text-align:center;}
.btn-product-primary{background:linear-gradient(135deg,#165DFF 0%,#0E42C8 100%);color:#fff;box-shadow:0 6px 20px rgba(22,93,255,.35);}
.btn-product-primary:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(22,93,255,.45)}
.btn-product-outline{background:#fff;color:var(--primary);border:1.5px solid var(--primary);}
.btn-product-outline:hover{background:var(--primary-light)}

.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.feature-card{background:#fff;border-radius:var(--radius-lg);padding:32px 26px;border:1px solid var(--gray-2);transition:var(--transition);position:relative;overflow:hidden;}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:transparent}
.feature-icon{width:52px;height:52px;border-radius:14px;display:flex;align-items:center;justify-content:center;margin-bottom:20px;flex-shrink:0;}
.feature-icon.blue{background:var(--primary-light);color:var(--primary)}
.feature-icon.green{background:var(--accent-light);color:var(--accent)}
.feature-icon.orange{background:#FFF4E6;color:#FF9F1C}
.feature-icon.purple{background:#F3E8FF;color:#8B5CF6}
.feature-icon svg{width:26px;height:26px}
.feature-card h3{font-size:17.5px;font-weight:700;color:var(--dark);margin-bottom:10px}
.feature-card p{font-size:14.5px;color:var(--gray-5);line-height:1.7}
.feature-card abbr{text-decoration:underline dotted;cursor:help;}

.nodes-grid{display:grid;grid-template-columns:repeat(6,1fr);gap:16px;text-align:center;}
.node-card{background:#fff;border-radius:var(--radius);padding:24px 16px;border:1px solid var(--gray-2);transition:var(--transition);}
.node-card:hover{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.node-card .node-name{font-size:15px;font-weight:700;color:var(--dark);margin-bottom:4px}
.node-card .node-loc{font-size:12.5px;color:var(--gray-4)}

.live-monitor{background:linear-gradient(135deg,#0A0E27 0%,#141A3A 50%,#0E1E4A 100%);padding:80px 0;color:#fff;position:relative;overflow:hidden;}
.live-monitor::before{content:'';position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.03) 1px,transparent 1px);background-size:48px 48px;pointer-events:none;}
.live-monitor .section-title h2{color:#fff}
.live-monitor .section-title p{color:rgba(255,255,255,.6)}
.monitor-panel{position:relative;z-index:2;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);border-radius:20px;overflow:hidden;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);}
.monitor-status-bar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;padding:14px 24px;background:rgba(255,255,255,.03);border-bottom:1px solid rgba(255,255,255,.06);font-size:13px;color:rgba(255,255,255,.6);}
.status-left{display:flex;align-items:center;gap:8px;color:#4EFFC0;font-weight:600}
.live-dot{width:8px;height:8px;border-radius:50%;background:#4EFFC0;box-shadow:0 0 0 0 rgba(78,255,192,.7);animation:pulse 2s infinite;}
.status-demo{display:inline-flex;align-items:center;gap:6px;padding:4px 12px;border-radius:999px;background:rgba(255,159,28,.15);border:1px solid rgba(255,159,28,.4);color:#FF9F1C;font-size:12.5px;font-weight:600;}
.status-demo svg{width:13px;height:13px;flex-shrink:0;}
.status-right{display:flex;align-items:center;gap:14px;flex-wrap:wrap;}
.status-right em{font-style:normal;color:#4EFFC0;font-variant-numeric:tabular-nums}
.monitor-grid{display:grid;grid-template-columns:1fr 1fr 1fr}
.monitor-card{padding:28px 24px;border-right:1px solid rgba(255,255,255,.06);}
.monitor-card:last-child{border-right:none}
.card-label{font-size:12px;color:rgba(255,255,255,.45);text-transform:uppercase;letter-spacing:1.2px;margin-bottom:20px;font-weight:600;}
.peak-value{display:flex;align-items:baseline;gap:6px;margin-bottom:18px}
.peak-num{font-size:52px;font-weight:800;line-height:1;letter-spacing:-.03em;background:linear-gradient(135deg,#4EFFC0 0%,#165DFF 100%);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;font-variant-numeric:tabular-nums;transition:transform .25s;}
.peak-num.pulse{transform:scale(1.07)}
.peak-unit{font-size:16px;color:rgba(255,255,255,.5);font-weight:600}
.peak-bar{height:8px;background:rgba(255,255,255,.08);border-radius:4px;overflow:hidden;margin-bottom:16px;}
.peak-fill{height:100%;width:40%;border-radius:4px;position:relative;background:linear-gradient(90deg,#4EFFC0,#165DFF);transition:width .8s cubic-bezier(.4,0,.2,1);}
.peak-fill::after{content:'';position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.4),transparent);animation:shimmer 2s infinite;}
@keyframes shimmer{0%{transform:translateX(-100%)}100%{transform:translateX(100%)}}
.peak-meta{display:flex;justify-content:space-between;font-size:13px;color:rgba(255,255,255,.5);}
.peak-meta em{font-style:normal;color:#4EFFC0;font-weight:700;font-variant-numeric:tabular-nums;}

.intercept-stat{margin-top:60px;padding:10px 14px;border-radius:10px;background:linear-gradient(135deg,rgba(22,93,255,.12) 0%,rgba(0,196,140,.12) 100%);border:1px solid rgba(78,255,192,.2);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.intercept-left{display:flex;align-items:center;gap:8px;}
.intercept-icon{width:20px;height:20px;flex-shrink:0;color:#4EFFC0;display:flex;align-items:center;justify-content:center;}
.intercept-icon svg{width:100%;height:100%;}
.intercept-label{font-size:12.5px;color:rgba(255,255,255,.65);font-weight:500;white-space:nowrap;}
.intercept-right{display:flex;align-items:baseline;gap:3px;}
.intercept-num{font-size:22px;font-weight:800;color:#4EFFC0;font-variant-numeric:tabular-nums;letter-spacing:-.02em;line-height:1;transition:transform .2s;}
.intercept-num.pulse{transform:scale(1.08);text-shadow:0 0 12px rgba(78,255,192,.6);}
.intercept-unit{font-size:12px;color:rgba(78,255,192,.7);font-weight:600;}

.peak-trend{margin-top:60px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);}
.trend-label{font-size:11.5px;color:rgba(255,255,255,.45);letter-spacing:.8px;margin-bottom:10px;text-transform:uppercase;font-weight:600;}
.trend-bars{display:flex;align-items:flex-end;gap:4px;height:64px;}
.trend-bar{flex:1;min-height:6px;border-radius:3px 3px 0 0;background:linear-gradient(180deg,rgba(78,255,192,.85),rgba(22,93,255,.35));transition:height .6s cubic-bezier(.4,0,.2,1);cursor:help;}
.trend-bar:hover{background:linear-gradient(180deg,#4EFFC0,#165DFF);}
.trend-bar.active{background:linear-gradient(180deg,#FF9F1C,rgba(255,159,28,.35));box-shadow:0 0 12px rgba(255,159,28,.4);}
.trend-axis{display:flex;justify-content:space-between;font-size:10px;color:rgba(255,255,255,.3);margin-top:6px;font-variant-numeric:tabular-nums;}

.node-list{display:flex;flex-direction:column;gap:12px}
.node-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;background:rgba(255,255,255,.03);transition:background .2s;}
.node-item:hover{background:rgba(255,255,255,.07)}
.node-dot{width:8px;height:8px;border-radius:50%;background:#4EFFC0;flex-shrink:0;box-shadow:0 0 8px rgba(78,255,192,.6);animation:pulse 2s infinite;}
.node-info{flex:1;min-width:0}
.node-name{font-size:13.5px;font-weight:600;color:#fff;margin-bottom:2px}
.node-loc{font-size:11.5px;color:rgba(255,255,255,.4)}
.node-latency{font-size:12px;color:rgba(255,255,255,.5);flex-shrink:0}
.node-latency em{font-style:normal;color:#4EFFC0;font-weight:700;font-variant-numeric:tabular-nums;}

.type-list{display:flex;flex-direction:column;gap:13px}
.type-head{display:flex;justify-content:space-between;font-size:13px;margin-bottom:6px}
.type-name{color:rgba(255,255,255,.7)}
.type-percent{font-weight:700;font-variant-numeric:tabular-nums}
.type-bar{height:6px;background:rgba(255,255,255,.08);border-radius:3px;overflow:hidden}
.type-fill{height:100%;border-radius:3px;transition:width .6s cubic-bezier(.4,0,.2,1);}

.source-summary{margin-top:18px;padding-top:16px;border-top:1px solid rgba(255,255,255,.08);display:flex;align-items:center;justify-content:space-between;gap:12px;}
.source-num{font-size:30px;font-weight:800;color:#FF9F1C;font-variant-numeric:tabular-nums;line-height:1;transition:transform .25s;}
.source-num span{font-size:.55em;color:rgba(255,159,28,.7);margin-left:2px;}
.source-num.pulse{transform:scale(1.08);}
.source-label{font-size:12px;color:rgba(255,255,255,.5);margin-top:6px;}
.source-desc{font-size:11.5px;color:rgba(255,255,255,.4);text-align:right;line-height:1.6;}
.source-desc strong{color:#4EFFC0;font-weight:600;}

.monitor-footnote{position:relative;z-index:2;margin-top:16px;text-align:center;font-size:12.5px;color:rgba(255,255,255,.5);}
.monitor-footnote a{color:#4EFFC0;text-decoration:underline}

.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}
.scene-card{display:block;background:#fff;border-radius:var(--radius-lg);padding:30px 24px;border:1px solid var(--gray-2);text-align:center;transition:var(--transition);color:inherit;}
.scene-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary)}
.scene-icon{width:56px;height:56px;border-radius:16px;margin:0 auto 18px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#E8F0FF 0%,#E6FBF5 100%);}
.scene-icon svg{width:28px;height:28px;color:var(--primary)}
.scene-card h3{font-size:16.5px;font-weight:700;color:var(--dark);margin-bottom:8px}
.scene-card p{font-size:13.5px;color:var(--gray-5);line-height:1.7}

.faq-list{max-width:860px;margin:0 auto;display:flex;flex-direction:column;gap:14px}
.faq-item{background:#fff;border-radius:var(--radius);border:1px solid var(--gray-2);overflow:hidden;transition:var(--transition);}
.faq-item[open]{border-color:var(--primary);box-shadow:var(--shadow-sm)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:20px 24px;cursor:pointer;font-size:16px;font-weight:600;color:var(--dark);transition:var(--transition);list-style:none;}
.faq-q::-webkit-details-marker{display:none}
.faq-q::after{content:'+';width:26px;height:26px;border-radius:50%;flex-shrink:0;background:var(--gray-1);color:var(--gray-4);display:flex;align-items:center;justify-content:center;transition:var(--transition);font-size:14px;font-weight:700;}
.faq-item[open] .faq-q{color:var(--primary)}
.faq-item[open] .faq-q::after{background:var(--primary);color:#fff;transform:rotate(45deg);}
.faq-a{padding:0 24px 22px;color:var(--gray-5);font-size:14.5px;line-height:1.8;}
.faq-a abbr{text-decoration:underline dotted;cursor:help;}

.cta-bar{background:linear-gradient(135deg,#165DFF 0%,#0E42C8 100%);padding:64px 0;color:#fff;text-align:center;position:relative;overflow:hidden;}
.cta-bar::before{content:'';position:absolute;inset:0;background:radial-gradient(circle at 30% 50%,rgba(255,255,255,.12) 0%,transparent 50%),radial-gradient(circle at 70% 50%,rgba(0,196,140,.2) 0%,transparent 50%);}
.cta-bar .container{position:relative;z-index:2}
.cta-bar h2{font-size:clamp(22px,2.6vw,32px);font-weight:800;margin-bottom:14px;letter-spacing:-.02em}
.cta-bar p{font-size:16px;color:rgba(255,255,255,.8);margin-bottom:28px;max-width:640px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.btn-cta-white{padding:14px 34px;border-radius:12px;font-size:15.5px;font-weight:700;background:#fff;color:var(--primary);transition:var(--transition);box-shadow:0 6px 20px rgba(0,0,0,.15);}
.btn-cta-white:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(0,0,0,.25)}
.btn-cta-ghost{padding:14px 34px;border-radius:12px;font-size:15.5px;font-weight:700;background:rgba(255,255,255,.1);color:#fff;border:1.5px solid rgba(255,255,255,.35);transition:var(--transition);backdrop-filter:blur(8px);}
.btn-cta-ghost:hover{background:rgba(255,255,255,.2)}

.footer{background:#0A0E27;color:rgba(255,255,255,.7);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:48px;border-bottom:1px solid rgba(255,255,255,.08);}
.footer-brand .logo-text{color:#fff;margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;max-width:320px;color:rgba(255,255,255,.55)}
.footer-col h4{font-size:15px;font-weight:700;color:#fff;margin-bottom:20px;letter-spacing:.2px;}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.6);padding:6px 0;transition:var(--transition);}
.footer-col a:hover{color:#4EFFC0;padding-left:4px}
.footer-contact-item{display:flex;align-items:center;gap:10px;font-size:14px;color:rgba(255,255,255,.65);padding:6px 0;}
.footer-contact-item svg{width:16px;height:16px;color:#4EFFC0;flex-shrink:0}
.footer-bottom{padding:24px 0;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:13px;color:rgba(255,255,255,.4);}
.footer-bottom a{color:rgba(255,255,255,.5)}
.footer-bottom a:hover{color:#4EFFC0}
.footer-disclaimer{padding:16px 0 24px;font-size:12px;line-height:1.7;color:rgba(255,255,255,.35);border-top:1px solid rgba(255,255,255,.06);text-align:center;}

@media (max-width:1100px){
  .products-grid{grid-template-columns:1fr;gap:20px}
  .features-grid{grid-template-columns:repeat(2,1fr)}
  .scene-grid{grid-template-columns:repeat(2,1fr)}
  .nodes-grid{grid-template-columns:repeat(3,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:900px){
  .monitor-grid{grid-template-columns:1fr}
  .monitor-card{border-right:none;border-bottom:1px solid rgba(255,255,255,.06)}
  .monitor-card:last-child{border-bottom:none}
  .peak-num{font-size:42px}
}
@media (max-width:860px){
  body{padding-top:60px}
  .nav-wrap{height:60px}
  .nav-links,.nav-cta .btn-ghost{display:none}
  .mobile-menu-btn{display:block}
  .hero{padding:60px 0 68px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:20px;margin-top:44px}
  .section{padding:56px 0}
  .section-title{margin-bottom:36px}
  #mobileNav{position:fixed;top:60px;left:0;right:0;z-index:999;max-height:calc(100vh - 60px);overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior:contain;box-shadow:0 12px 32px rgba(10,14,39,.15);}
}
@media (max-width:600px){
  .container{padding:0 16px}
  .logo-text{font-size:17px}
  .logo-mark{width:32px;height:32px;font-size:16px}
  .hero{padding:44px 0 52px}
  .hero h1{font-size:27px}
  .hero-sub{font-size:14.5px}
  .hero-tag{font-size:12.5px;padding:6px 12px}
  .btn-hero{padding:13px 26px;font-size:15px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:16px;margin-top:36px;padding-top:24px}
  .hero-stat-num{font-size:22px}
  .hero-stat-label{font-size:12px}
  .hero-stat-note{font-size:10.5px;}
  .section{padding:44px 0}
  .section-title h2{font-size:22px}
  .section-title p{font-size:14.5px}
  .features-grid{grid-template-columns:1fr;gap:14px}
  .feature-card{padding:24px 20px}
  .product-card{padding:28px 22px}
  .product-card h3{font-size:20px}
  .scene-grid{grid-template-columns:1fr;gap:14px}
  .nodes-grid{grid-template-columns:repeat(2,1fr)}
  .live-monitor{padding:56px 0}
  .monitor-card{padding:22px 18px}
  .peak-num{font-size:38px}
  .monitor-status-bar{padding:12px 18px;font-size:12px}
  .status-demo{font-size:11.5px;padding:3px 10px;}
  .faq-q{padding:16px 18px;font-size:15px}
  .faq-a{padding:0 18px 18px}
  .cta-bar{padding:48px 0}
  .btn-cta-white,.btn-cta-ghost{padding:12px 26px;font-size:14.5px}
  .footer{padding:48px 0 0}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;text-align:center;gap:8px}
  #mobileNav{padding:4px 16px 16px}
  #mobileNav > a{padding:13px 0;font-size:14.5px}
  .mobile-nav-toggle{padding:13px 0;font-size:14.5px}
  .mobile-submenu a{padding:10px 0;font-size:14px}
}