/* =========================================================
   光年云算 官网 · 深邃科技蓝 + 荧光绿/极光蓝
   大字重 · 留白美学 · 微动效 · 3D视感
   ========================================================= */

/* --- CSS 变量 --- */
:root {
  /* 深邃科技蓝背景 */
  --bg-deep: #060D1A;
  --bg-dark: #0A1628;
  --bg-card: rgba(15, 39, 69, 0.55);
  --bg-card-hover: rgba(20, 50, 90, 0.7);
  --bg-surface: rgba(26, 58, 92, 0.35);

  /* 荧光绿点缀 */
  --green: #00E676;
  --green-2: #00FF88;
  --green-3: #69F0AE;
  --green-dim: rgba(0, 230, 118, 0.15);

  /* 极光蓝点缀 */
  --blue: #00B8FF;
  --blue-2: #00D4FF;
  --blue-3: #80DEFF;
  --blue-dim: rgba(0, 184, 255, 0.12);

  /* 红色(工业) */
  --red: #FF5E5E;
  --orange: #FF8C28;

  /* 文本色 */
  --text: #F1F5F9;
  --text-2: #CBD5E1;
  --muted: #94A3B8;
  --muted-2: #64748B;

  /* 边框 & 阴影 */
  --line: rgba(148, 163, 184, 0.1);
  --line-2: rgba(148, 163, 184, 0.18);
  --glow-green: 0 0 40px rgba(0, 230, 118, 0.3);
  --glow-blue: 0 0 40px rgba(0, 184, 255, 0.25);
  --shadow-lg: 0 24px 64px rgba(0, 0, 0, 0.5);

  /* 尺寸 */
  --radius-sm: 8px;
  --radius: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --max-w: 1200px;
  --nav-h: 74px;
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* --- Reset --- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  font-size:16px;line-height:1.65;color:var(--text);background:var(--bg-deep);
  overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .25s;}
button{font-family:inherit;border:0;background:transparent;cursor:pointer;}
ul{list-style:none;}
h1,h2,h3,h4{font-weight:700;line-height:1.2;}
.container{max-width:var(--max-w);margin:0 auto;padding:0 24px;width:100%;}

/* --- 按钮 --- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:999px;font-weight:600;font-size:15px;transition:all .3s var(--ease);white-space:nowrap;cursor:pointer;letter-spacing:.3px;}
.btn-primary{background:linear-gradient(135deg,var(--green),#00C853);color:#060D1A;box-shadow:var(--glow-green);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 0 56px rgba(0,230,118,.45);}
.btn-ghost{background:transparent;color:var(--text);border:1.5px solid rgba(255,255,255,.2);backdrop-filter:blur(4px);}
.btn-ghost:hover{background:rgba(255,255,255,.06);border-color:rgba(255,255,255,.4);}
.btn-outline{background:transparent;color:var(--blue);border:1.5px solid var(--blue);}
.btn-outline:hover{background:var(--blue-dim);}
.btn-light{background:var(--text);color:var(--bg-deep);}
.btn-block{width:100%;justify-content:center;}

/* eyebrow */
.eyebrow{display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:4px;color:var(--green);margin-bottom:14px;text-transform:uppercase;}
.section{padding:110px 0;position:relative;}
.section-head{text-align:center;max-width:700px;margin:0 auto 72px;}
.section-title{font-size:clamp(30px,5vw,46px);margin-bottom:18px;letter-spacing:-1px;color:#fff;}
.section-desc{color:var(--muted);font-size:17px;line-height:1.8;}

/* ==================== 导航 ==================== */
.navbar{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:100;background:rgba(6,13,26,.88);backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid rgba(255,255,255,.06);transition:all .3s var(--ease);}
.navbar.scrolled{background:rgba(6,13,26,.95);box-shadow:0 4px 24px rgba(0,0,0,.4);}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:24px;}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;color:#fff;}
.brand-logo{width:60px;height:60px;object-fit:contain;filter:brightness(1.2);}
.brand-text{font-size:20px;letter-spacing:1px;}
.nav-menu{display:flex;align-items:center;gap:4px;}
.nav-link{padding:8px 16px;border-radius:8px;font-size:14.5px;font-weight:500;color:var(--text-2);transition:all .25s;}
.nav-link:hover{color:#fff;background:rgba(255,255,255,.05);}
.nav-link.active{color:var(--green);font-weight:600;}
.nav-link.active::after{content:"";position:absolute;bottom:-1px;left:50%;width:16px;height:2px;background:var(--green);border-radius:2px;transform:translateX(-50%);}
.nav-cta{background:linear-gradient(135deg,var(--green),#00C853);color:#060D1A!important;padding:9px 22px;margin-left:12px;font-weight:600;box-shadow:var(--glow-green);}
.nav-cta:hover{transform:translateY(-1px);box-shadow:0 0 48px rgba(0,230,118,.4);background:linear-gradient(135deg,var(--green-2),var(--green));}
.nav-cta.active::after{display:none;}
.nav-toggle{display:none;width:40px;height:40px;flex-direction:column;justify-content:center;align-items:center;gap:5px;border-radius:8px;}
.nav-toggle span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:all .3s;}
.nav-toggle.open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.nav-toggle.open span:nth-child(2){opacity:0;}
.nav-toggle.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}

/* ==================== Hero ==================== */
.hero{position:relative;min-height:100vh;display:flex;flex-direction:column;overflow:hidden;padding:0;background:
    var(--bg-deep),
    url("../image/hero-bg.svg");}
.hero::before{content:"";position:absolute;inset:0;background:
    radial-gradient(ellipse 80% 60% at 25% 25%,rgba(0,184,255,.08) 0%,transparent 55%),
    radial-gradient(ellipse 80% 60% at 75% 75%,rgba(0,230,118,.06) 0%,transparent 55%),
    linear-gradient(180deg,rgba(6,13,26,.5) 0%,rgba(6,13,26,.05) 35%,rgba(6,13,26,.05) 65%,rgba(6,13,26,.45) 100%);z-index:0;pointer-events:none;}
.hero-overlay{position:absolute;inset:0;background:radial-gradient(ellipse at 50% 35%,rgba(0,184,255,.06) 0%,transparent 60%),radial-gradient(ellipse at 80% 70%,rgba(0,230,118,.05) 0%,transparent 50%);z-index:1;pointer-events:none;}
.hero-canvas{position:absolute;inset:0;width:100%;height:100%;z-index:0;}
.hero-glow{position:absolute;border-radius:50%;filter:blur(140px);opacity:.35;z-index:0;pointer-events:none;}
.hero-glow--green{width:500px;height:500px;background:rgba(0,230,118,.2);top:-180px;right:-150px;}
.hero-glow--blue{width:600px;height:600px;background:rgba(0,184,255,.15);bottom:-250px;left:-200px;}

/* 左右分栏主容器 */
.hero-grid{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;align-items:center;min-height:100vh;gap:40px;padding-top:calc(var(--nav-h) + 60px);padding-bottom:40px;}

/* 左侧内容区 */
.hero-left{display:flex;flex-direction:column;justify-content:center;}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 22px;border-radius:999px;background:rgba(0,230,118,.1);border:1px solid rgba(0,230,118,.25);color:var(--green);font-size:13px;font-weight:600;letter-spacing:2px;margin-bottom:30px;width:fit-content;}
.badge-dot{width:8px;height:8px;background:var(--green);border-radius:50%;box-shadow:0 0 12px var(--green);animation:dotPulse 2s ease-in-out infinite;}
@keyframes dotPulse{0%,100%{opacity:1;transform:scale(1);}50%{opacity:.6;transform:scale(1.5);}}
.hero-title{font-size:clamp(36px,7vw,72px);font-weight:900;line-height:1.1;letter-spacing:-2px;margin-bottom:24px;color:#fff;}
.line-break{display:block;}
.hero-subtitle{font-size:clamp(15px,1.6vw,18px);color:var(--muted);max-width:520px;margin-bottom:36px;line-height:1.85;}
.mobile-br{display:none;}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:48px;}

/* 动态数轴 */
.hero-stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;padding:30px 0 14px;border-radius:var(--radius-lg);align-items:end;position:relative;width:100%;}
.stat-item{text-align:left;padding:0 0 0 28px;position:relative;min-width:0;}
.stat-item:first-child{padding-left:0;}
.stat-item:not(:first-child)::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:1px;height:44px;background:linear-gradient(to bottom,transparent,var(--line-2) 15%,var(--line-2) 85%,transparent);}
.stat-num{font-size:clamp(30px,3.8vw,42px);font-weight:900;color:var(--green);display:inline-block;text-shadow:0 0 30px rgba(0,230,118,.35);line-height:1;letter-spacing:-1px;font-family:var(--font-display);}
.stat-unit{font-size:clamp(13px,1.2vw,15px);color:var(--green-3);margin-left:4px;font-weight:700;letter-spacing:.3px;line-height:1;display:inline-block;transform:translateY(-2px);}
.stat-label{font-size:13px;color:var(--muted);margin-top:10px;letter-spacing:.5px;line-height:1.4;}
.stat-divider{display:none;}

/* 右侧视觉区 */
.hero-right{display:flex;align-items:center;justify-content:center;height:100%;}
.hero-visual{position:relative;width:100%;max-width:520px;aspect-ratio:1;display:flex;align-items:center;justify-content:center;}

/* 核心光环 */
.hv-core{position:relative;width:260px;height:260px;display:flex;align-items:center;justify-content:center;}
.hv-ring{position:absolute;border-radius:50%;border-style:solid;}
.hv-ring--outer{inset:0;border-width:1.5px;border-color:rgba(0,184,255,.25);animation:hvRotate 20s linear infinite;}
.hv-ring--mid{inset:28px;border-width:1.5px;border-color:rgba(0,230,118,.2);border-style:dashed;animation:hvRotate 14s linear infinite reverse;}
.hv-ring--inner{inset:56px;border-width:2px;border-color:rgba(0,184,255,.35);animation:hvRotate 10s linear infinite;}
@keyframes hvRotate{to{transform:rotate(360deg);}}

.hv-center{width:60px;height:60px;border-radius:50%;background:rgba(0,184,255,.08);border:1.5px solid rgba(0,184,255,.3);display:flex;align-items:center;justify-content:center;box-shadow:0 0 40px rgba(0,184,255,.15),inset 0 0 30px rgba(0,184,255,.08);animation:hvPulse 3s ease-in-out infinite;color:#80DEFF;}
@keyframes hvPulse{0%,100%{box-shadow:0 0 30px rgba(0,184,255,.1),inset 0 0 20px rgba(0,184,255,.05);}50%{box-shadow:0 0 60px rgba(0,184,255,.25),inset 0 0 40px rgba(0,184,255,.15);}}
.hv-core-label{position:absolute;top:78px;left:50%;transform:translateX(-50%);font-size:11px;font-weight:700;letter-spacing:2px;color:var(--green);background:rgba(6,13,26,.85);border:1px solid rgba(0,230,118,.3);padding:4px 12px;border-radius:999px;white-space:nowrap;text-transform:uppercase;}

/* IOT 设备节点 (12个) */
.hv-node--device{position:absolute;display:flex;flex-direction:column;align-items:center;gap:6px;top:var(--y,50%);left:var(--x,50%);transform:translate(-50%,-50%);animation:hvBob 4.5s ease-in-out infinite var(--d,0s),hvLightUp 6s ease-in-out infinite calc(.5s + var(--d,0s) * 1);z-index:3;}
@keyframes hvBob{0%,100%{transform:translate(-50%,-50%);}50%{transform:translate(-50%,calc(-50% - 6px));}}
@keyframes hvLightUp{0%,10%{opacity:.3;filter:grayscale(.7) brightness(.6);}20%,82%{opacity:1;filter:grayscale(0) brightness(1);}92%,100%{opacity:.3;filter:grayscale(.7) brightness(.6);}}

.hv-node-icon{width:44px;height:44px;border-radius:50%;background:rgba(0,184,255,.06);border:1.5px solid rgba(0,184,255,.25);display:flex;align-items:center;justify-content:center;color:#80DEFF;transition:all .3s var(--ease);position:relative;backdrop-filter:blur(4px);}
.hv-node-icon::after{content:"";position:absolute;inset:-3px;border-radius:50%;border:1.5px solid rgba(0,230,118,.4);opacity:0;animation:hvPing 2.5s ease-out infinite;animation-delay:var(--d,0s);}
.hv-node-icon svg{width:22px;height:22px;}
.hv-node--device:hover .hv-node-icon{background:rgba(0,230,118,.12);border-color:var(--green);color:var(--green);transform:scale(1.12);box-shadow:0 0 24px rgba(0,230,118,.4);}
@keyframes hvPing{0%{transform:scale(.85);opacity:.7;}100%{transform:scale(1.6);opacity:0;}}

.hv-node-label{font-size:10.5px;font-weight:600;color:var(--muted);background:rgba(6,13,26,.7);padding:3px 10px;border-radius:999px;white-space:nowrap;border:1px solid rgba(148,163,184,.12);backdrop-filter:blur(6px);transition:all .3s var(--ease);letter-spacing:.5px;}
.hv-node--device:hover .hv-node-label{color:var(--green);border-color:rgba(0,230,118,.35);background:rgba(0,230,118,.08);}

/* 浮动几何块 */
.hv-geo{position:absolute;animation:hvFloat 5s ease-in-out infinite;animation-delay:var(--delay,0s);}
.hv-geo--rect{width:20px;height:20px;border:1.5px solid rgba(0,184,255,.2);border-radius:5px;background:rgba(0,184,255,.04);top:var(--y,20%);left:var(--x,15%);}
.hv-geo--diamond{width:16px;height:16px;border:1.5px solid rgba(0,230,118,.2);border-radius:3px;background:rgba(0,230,118,.04);transform:rotate(45deg);top:var(--y,65%);left:var(--x,85%);}
.hv-geo--circle-sm{width:14px;height:14px;border-radius:50%;border:1.5px solid rgba(0,184,255,.15);background:rgba(0,184,255,.03);top:var(--y,30%);left:var(--x,75%);}
@keyframes hvFloat{0%,100%{transform:translateY(0) rotate(0deg);}50%{transform:translateY(-14px) rotate(3deg);}}

/* 网格线 */
.hv-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(0,184,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(0,184,255,.04) 1px,transparent 1px);background-size:40px 40px;border-radius:50%;mask-image:radial-gradient(circle,black 30%,transparent 70%);-webkit-mask-image:radial-gradient(circle,black 30%,transparent 70%);opacity:.5;}

/* 快捷入口 */
.quick-entry{position:relative;z-index:2;display:grid;grid-template-columns:repeat(3,1fr);gap:20px;padding-bottom:80px;}
.qe-card{display:flex;align-items:center;gap:18px;padding:24px 26px;background:var(--bg-card);border:1px solid var(--line-2);border-radius:var(--radius-lg);backdrop-filter:blur(12px);transition:all .35s var(--ease);cursor:pointer;}
.qe-card:hover{background:var(--bg-card-hover);border-color:var(--green);transform:translateY(-4px);box-shadow:var(--glow-green);}
.qe-icon{width:52px;height:52px;border-radius:var(--radius);background:rgba(0,230,118,.08);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--green);}
.qe-icon svg{width:28px;height:28px;}
.qe-content{flex:1;min-width:0;}
.qe-content h3{font-size:17px;color:#fff;margin-bottom:4px;}
.qe-content p{font-size:13px;color:var(--muted);}
.qe-arrow{font-size:20px;color:var(--green);opacity:0;transition:all .3s var(--ease);}
.qe-card:hover .qe-arrow{opacity:1;transform:translateX(4px);}

.scroll-hint{position:absolute;bottom:40px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:8px;z-index:2;opacity:.6;}
.scroll-hint span{font-size:10px;letter-spacing:3px;color:var(--muted-2);}
.scroll-line{width:1px;height:32px;background:linear-gradient(to bottom,var(--green),transparent);animation:scrollLine 2s ease-in-out infinite;}
@keyframes scrollLine{0%{transform:scaleY(0);transform-origin:top;}50%{transform:scaleY(1);transform-origin:top;}50.1%{transform-origin:bottom;}100%{transform:scaleY(0);transform-origin:bottom;}}

/* ==================== 解决方案 ==================== */
.solutions{background:var(--bg-dark);}
.cluster{margin-bottom:64px;}
.cluster:last-child{margin-bottom:0;}
.cluster-header{display:flex;align-items:center;gap:18px;margin-bottom:36px;padding:24px 30px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);backdrop-filter:blur(8px);}
.cluster-icon{width:56px;height:56px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;flex-shrink:0;background:rgba(255,255,255,.03);}
.cluster-icon--red{border:1px solid rgba(255,94,94,.3);}
.cluster-icon--green{border:1px solid rgba(0,230,118,.3);}
.cluster-icon--blue{border:1px solid rgba(0,184,255,.3);}
.cluster-icon svg{width:28px;height:28px;}
.cluster-badge{font-size:11px;font-weight:700;letter-spacing:3px;color:var(--muted-2);}
.cluster-header h3{font-size:24px;color:#fff;margin-top:4px;}
.cluster-header p{color:var(--muted);font-size:14px;margin-top:2px;}

/* 方案卡片 */
.sol-card{position:relative;margin-bottom:24px;border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);transition:all .4s var(--ease);}
.sol-card:hover{border-color:var(--line-2);box-shadow:var(--shadow-lg);transform:translateY(-2px);}
.sol-card-bg{position:absolute;inset:0;background:var(--sol-gradient,var(--bg-card));z-index:0;}
.sol-card-inner{position:relative;z-index:1;padding:36px 34px;background:var(--bg-card);}
.sol-card-head{display:flex;align-items:center;gap:16px;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid var(--line);}
.sol-num{font-size:36px;font-weight:900;color:rgba(255,255,255,.08);line-height:1;}
.sol-card-head h3{font-size:22px;color:#fff;flex:1;}
.sol-tag{padding:4px 12px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:1px;}
.tag-red{background:rgba(255,94,94,.15);color:#FF5E5E;}
.tag-orange{background:rgba(255,140,40,.15);color:#FF8C28;}
.tag-blue{background:rgba(0,184,255,.15);color:var(--blue);}
.tag-green{background:rgba(0,230,118,.15);color:var(--green);}
.tag-cyan{background:rgba(0,200,200,.15);color:#00D4D4;}

.sol-section{margin-bottom:24px;}
.sol-section h4{font-size:15px;color:var(--green);margin-bottom:10px;}
.sol-section p{color:var(--muted);font-size:14.5px;line-height:1.75;}
.sol-arch{margin-bottom:24px;}
.sol-arch h4{font-size:15px;color:var(--green);margin-bottom:12px;}
.arch-diagram{display:flex;align-items:center;gap:6px;flex-wrap:wrap;padding:18px 16px;background:rgba(255,255,255,.02);border:1px solid var(--line);border-radius:var(--radius);}
.arch-node{padding:10px 16px;background:rgba(0,184,255,.06);border:1px solid rgba(0,184,255,.15);border-radius:var(--radius-sm);text-align:center;min-width:100px;flex-shrink:0;}
.arch-node--hl{border-color:var(--green);background:rgba(0,230,118,.08);color:var(--green);}
.arch-node div:first-child{color:#fff;font-size:14px;font-weight:600;}
.arch-detail{font-size:11px;color:var(--muted-2);margin-top:4px;}
.arch-arrow{color:var(--green);font-size:16px;flex-shrink:0;}

.sol-features{margin-bottom:24px;}
.sol-features h4{font-size:15px;color:var(--green);margin-bottom:12px;}
.feat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;}
.feat-item{padding:10px 14px;background:rgba(255,255,255,.02);border:1px solid var(--line);border-radius:var(--radius-sm);font-size:13px;color:var(--text-2);transition:all .2s;}
.feat-item:hover{background:var(--bg-card-hover);border-color:var(--green);color:#fff;}

.sol-value{padding:16px 20px;background:rgba(0,230,118,.06);border-left:3px solid var(--green);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--text-2);font-size:14px;line-height:1.7;}
.sol-value strong{color:var(--green);}

/* ==================== AI+IOT 物模型架构图 ==================== */
.iot-arch{max-width:1000px;margin:0 auto;padding:20px 0;}
/* --- 架构层通用 --- */
.arch-layer{position:relative;border-radius:var(--radius-xl);backdrop-filter:blur(6px);}
.arch-layer-tag{position:absolute;top:-14px;left:50%;transform:translateX(-50%);padding:4px 18px;background:var(--bg-dark);border:1px solid rgba(0,184,255,.25);border-radius:999px;font-size:12px;font-weight:700;color:var(--blue);letter-spacing:2px;white-space:nowrap;z-index:2;}

/* --- 第一层：行业应用 --- */
.arch-apps{padding:36px 28px 28px;background:rgba(0,184,255,.02);border:1px solid rgba(0,184,255,.12);}
.arch-apps .arch-layer-tag{top:-15px;}
.arch-app-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;}
.arch-app-node{display:flex;flex-direction:column;align-items:center;gap:8px;padding:18px 12px 14px;border-radius:var(--radius);border:1px solid var(--line);background:var(--bg-card);cursor:default;transition:all .35s var(--ease);}
.arch-app-node:hover{transform:translateY(-3px);box-shadow:0 8px 24px rgba(0,0,0,.3);}
.arch-app-icon{font-size:28px;line-height:1;}
.arch-app-name{font-size:13.5px;font-weight:600;color:#fff;letter-spacing:1px;}
/* 行业颜色 */
.arch-app--red{border-color:rgba(255,94,94,.25);}
.arch-app--red:hover{border-color:#FF5E5E;box-shadow:0 8px 24px rgba(255,94,94,.2);}
.arch-app--orange{border-color:rgba(255,140,40,.25);}
.arch-app--orange:hover{border-color:#FF8C28;box-shadow:0 8px 24px rgba(255,140,40,.2);}
.arch-app--blue{border-color:rgba(0,184,255,.25);}
.arch-app--blue:hover{border-color:var(--blue);box-shadow:0 8px 24px rgba(0,184,255,.2);}
.arch-app--green{border-color:rgba(0,230,118,.25);}
.arch-app--green:hover{border-color:var(--green);box-shadow:0 8px 24px rgba(0,230,118,.2);}
.arch-app--teal{border-color:rgba(0,200,150,.25);}
.arch-app--teal:hover{border-color:#00c896;box-shadow:0 8px 24px rgba(0,200,150,.2);}
.arch-app--cyan{border-color:rgba(0,200,200,.25);}
.arch-app--cyan:hover{border-color:#00D4D4;box-shadow:0 8px 24px rgba(0,200,200,.2);}
.arch-app--purple{border-color:rgba(160,120,255,.25);}
.arch-app--purple:hover{border-color:#A078FF;box-shadow:0 8px 24px rgba(160,120,255,.2);}
.arch-app--lime{border-color:rgba(139,195,74,.25);}
.arch-app--lime:hover{border-color:#8BC34A;box-shadow:0 8px 24px rgba(139,195,74,.2);}

/* --- 连接桥 --- */
.arch-bridge{position:relative;height:48px;display:flex;align-items:center;justify-content:center;}
.arch-bridge-svg{position:absolute;inset:0;width:100%;height:100%;}
.arch-bridge-label{position:relative;z-index:1;font-size:12px;color:var(--muted-2);letter-spacing:2px;background:var(--bg-dark);padding:4px 16px;border-radius:999px;}

/* --- 第二层：AI核心引擎 --- */
.arch-core{padding:24px 0;display:flex;justify-content:center;}
.arch-core-card{position:relative;padding:32px 56px;background:rgba(6,13,26,.9);border:1px solid rgba(0,184,255,.2);border-radius:var(--radius-xl);text-align:center;overflow:hidden;}
.arch-core-glow{position:absolute;inset:-1px;background:radial-gradient(ellipse at center,rgba(0,230,118,.06) 0%,transparent 70%);pointer-events:none;}
.arch-core-icon{position:relative;z-index:1;margin-bottom:16px;animation:pulseRing 3s ease-in-out infinite;}
.arch-core-title{position:relative;z-index:1;font-size:24px;font-weight:700;background:linear-gradient(135deg,var(--green),var(--blue));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;margin-bottom:10px;}
.arch-core-desc{position:relative;z-index:1;font-size:14px;color:var(--muted);margin-bottom:20px;}
.arch-core-meta{position:relative;z-index:1;display:flex;gap:32px;justify-content:center;}
.arch-core-item{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-2);}

/* --- 第三层：IOT感知连接 --- */
.arch-device{padding:28px 32px 24px;background:rgba(0,230,118,.015);border:1px solid rgba(0,230,118,.1);}
.arch-device .arch-layer-tag{top:-15px;color:var(--green);border-color:rgba(0,230,118,.25);}
.arch-device-row{display:flex;align-items:center;gap:32px;}
.arch-device-group{flex:1;}
.arch-device-label{font-size:12px;font-weight:700;color:var(--green);letter-spacing:2px;margin-bottom:12px;display:block;}
.arch-device-tags{display:flex;flex-wrap:wrap;gap:8px;}
.arch-device-tag{display:flex;align-items:center;gap:6px;padding:8px 14px;background:rgba(0,230,118,.04);border:1px solid rgba(0,230,118,.12);border-radius:var(--radius-sm);font-size:12.5px;color:var(--text-2);transition:all .3s;}
.arch-device-tag:hover{background:rgba(0,230,118,.1);border-color:rgba(0,230,118,.3);color:#fff;}
.arch-device-tag i{font-style:normal;font-size:14px;}
.arch-device-divider{width:1px;height:60px;background:linear-gradient(180deg,transparent,rgba(0,184,255,.3),transparent);flex-shrink:0;}

/* ====== 解决方案瀑布流 + 筛选 ====== */
.solution-filter-bar{position:sticky;top:var(--nav-h);z-index:50;background:linear-gradient(180deg,var(--bg-deep) 60%,transparent);padding:24px 0 8px;border-bottom:1px solid rgba(255,255,255,.04);backdrop-filter:blur(12px);}
.filter-group{display:flex;align-items:flex-start;gap:16px;margin-bottom:12px;flex-wrap:wrap;}
.filter-group:last-child{margin-bottom:0;}
.filter-label{font-size:12px;font-weight:700;letter-spacing:2px;color:var(--muted-2);text-transform:uppercase;white-space:nowrap;padding-top:6px;min-width:60px;}
.filter-btns{display:flex;flex-wrap:wrap;gap:8px;flex:1;}
.filter-btn{padding:6px 16px;border-radius:999px;font-size:13px;font-weight:500;color:var(--text-2);background:var(--bg-card);border:1px solid var(--line);cursor:pointer;transition:all .3s var(--ease);white-space:nowrap;}
.filter-btn:hover{border-color:var(--green);color:#fff;background:rgba(0,230,118,.06);}
.filter-btn.active{background:rgba(0,230,118,.14);border-color:var(--green);color:var(--green);font-weight:600;box-shadow:0 0 12px rgba(0,230,118,.15);}

/* 瀑布流网格 */
.solution-waterfall{padding:40px 0 80px;background:var(--bg-deep);}
.waterfall-grid{columns:3 340px;column-gap:24px;}
.wf-card{break-inside:avoid;margin-bottom:24px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);transition:all .4s var(--ease);position:relative;overflow:hidden;cursor:pointer;}
.wf-card::before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,rgba(0,184,255,.03) 0%,transparent 50%,rgba(0,230,118,.02) 100%);pointer-events:none;z-index:0;}
.wf-card:hover{border-color:var(--line-2);transform:translateY(-4px);box-shadow:0 12px 40px rgba(0,0,0,.35);}
/* 卡片配图 */
.wf-card-img{position:relative;width:100%;height:180px;overflow:hidden;}
.wf-card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.wf-card:hover .wf-card-img img{transform:scale(1.06);}
.wf-card-img::after{content:"";position:absolute;bottom:0;left:0;right:0;height:40px;background:linear-gradient(to top,var(--bg-card),transparent);pointer-events:none;}
/* 卡片内容区 */
.wf-card-body{position:relative;z-index:1;padding:0 28px 32px;}
.wf-card-badge{display:inline-block;padding:4px 12px;border-radius:999px;font-size:11px;font-weight:700;letter-spacing:1px;margin-bottom:18px;}
.badge-industrial{background:rgba(0,184,255,.12);color:var(--blue);border:1px solid rgba(0,184,255,.2);}
.badge-livelihood{background:rgba(0,230,118,.12);color:var(--green);border:1px solid rgba(0,230,118,.2);}
.badge-edu{background:rgba(0,200,200,.12);color:#00D4D4;border:1px solid rgba(0,200,200,.2);}
.wf-card-icon{width:52px;height:52px;border-radius:var(--radius);display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--green);background:rgba(0,230,118,.06);border:1px solid rgba(0,230,118,.15);}
.wf-card-icon svg{width:28px;height:28px;}
.wf-card-title{font-size:20px;font-weight:700;color:#fff;margin-bottom:12px;}
.wf-card-desc{font-size:14px;color:var(--muted);line-height:1.75;margin-bottom:20px;}
.wf-card-iot{border-top:1px solid rgba(255,255,255,.06);padding-top:16px;}
.iot-label{font-size:11px;font-weight:700;letter-spacing:2px;color:var(--green);text-transform:uppercase;margin-bottom:10px;display:block;}
.iot-tags{display:flex;flex-wrap:wrap;gap:6px;}
.iot-tags span{padding:5px 12px;border-radius:6px;font-size:12px;font-weight:500;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.06);color:var(--text-2);transition:all .2s;}
.iot-tags span:hover{background:rgba(0,230,118,.08);border-color:rgba(0,230,118,.2);color:var(--green);}
/* 查看详情 */
.wf-card-more{display:flex;align-items:center;gap:6px;margin-top:16px;padding-top:14px;border-top:1px solid rgba(255,255,255,.05);font-size:13px;font-weight:600;color:var(--green);transition:all .3s var(--ease);}
.wf-card:hover .wf-card-more{color:#fff;gap:10px;}
.wf-card-more svg{transition:transform .3s var(--ease);}
.wf-card:hover .wf-card-more svg{transform:translateX(3px);}

/* 卡片入场动画 */
.wf-card{opacity:0;transform:translateY(30px);animation:wfFadeIn .5s ease-out forwards;}
.wf-card:nth-child(1){animation-delay:.05s;}
.wf-card:nth-child(2){animation-delay:.12s;}
.wf-card:nth-child(3){animation-delay:.19s;}
.wf-card:nth-child(4){animation-delay:.26s;}
.wf-card:nth-child(5){animation-delay:.33s;}
.wf-card:nth-child(6){animation-delay:.4s;}
.wf-card:nth-child(7){animation-delay:.47s;}
.wf-card:nth-child(8){animation-delay:.54s;}
@keyframes wfFadeIn{to{opacity:1;transform:translateY(0);}}

/* 筛选过渡 */
.wf-card.hidden{display:none;}

/* ====== 方案详情弹窗 ====== */
.solution-modal-overlay{position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.75);backdrop-filter:blur(8px);display:flex;align-items:flex-start;justify-content:center;overflow-y:auto;padding:60px 20px 80px;opacity:0;visibility:hidden;transition:opacity .35s var(--ease),visibility .35s var(--ease);}
.solution-modal-overlay.active{opacity:1;visibility:visible;}
.solution-modal{position:relative;width:100%;max-width:860px;background:var(--bg-card);border:1px solid var(--line-2);border-radius:var(--radius-lg);overflow:hidden;transform:translateY(40px) scale(.96);transition:transform .4s var(--ease);}
.solution-modal-overlay.active .solution-modal{transform:translateY(0) scale(1);}
.modal-close{position:absolute;top:16px;right:16px;z-index:10;width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.5);border:1px solid rgba(255,255,255,.1);color:#fff;cursor:pointer;transition:all .3s var(--ease);}
.modal-close:hover{background:rgba(255,255,255,.1);border-color:var(--green);color:var(--green);}

/* 弹窗顶部大图 */
.modal-hero-img{width:100%;height:300px;overflow:hidden;position:relative;}
.modal-hero-img img{width:100%;height:100%;object-fit:cover;}
.modal-hero-img::after{content:"";position:absolute;bottom:0;left:0;right:0;height:60px;background:linear-gradient(to top,var(--bg-card),transparent);pointer-events:none;}

/* 弹窗内容 */
.modal-body{padding:8px 48px 48px;}
.modal-badge{display:inline-block;padding:5px 14px;border-radius:999px;font-size:12px;font-weight:700;letter-spacing:1.5px;margin-bottom:16px;}
.modal-title{font-size:32px;font-weight:800;color:#fff;margin-bottom:32px;line-height:1.3;}
.modal-section{margin-bottom:32px;}
.modal-section h4{font-size:14px;font-weight:700;letter-spacing:2px;color:var(--green);text-transform:uppercase;margin-bottom:12px;position:relative;padding-left:16px;}
.modal-section h4::before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:4px;height:16px;border-radius:2px;background:var(--green);}
.modal-section p{font-size:15px;color:var(--muted);line-height:1.85;}

/* 核心能力列表 */
.modal-features{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.modal-feature-item{padding:16px 20px;background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.05);border-radius:var(--radius);transition:all .3s var(--ease);}
.modal-feature-item:hover{border-color:var(--green);background:rgba(0,230,118,.04);}
.modal-feature-item h5{font-size:14px;font-weight:600;color:#fff;margin-bottom:6px;}
.modal-feature-item p{font-size:13px;color:var(--muted);line-height:1.6;margin:0;}

/* 应用场景标签 */
.modal-scenarios{display:flex;flex-wrap:wrap;gap:8px;}
.modal-scenario-tag{padding:8px 18px;border-radius:999px;font-size:13px;font-weight:500;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);color:var(--text-2);}
.modal-scenario-tag::before{content:"▸ ";color:var(--green);}

/* 客户价值指标 */
.modal-values{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;}
.modal-value-item{text-align:center;padding:20px 16px;background:rgba(0,230,118,.04);border:1px solid rgba(0,230,118,.12);border-radius:var(--radius);transition:all .3s var(--ease);}
.modal-value-item:hover{border-color:var(--green);background:rgba(0,230,118,.08);}
.modal-value-num{display:block;font-size:28px;font-weight:800;color:var(--green);}
.modal-value-unit{font-size:14px;font-weight:400;color:var(--muted);}
.modal-value-label{display:block;font-size:12px;color:var(--muted-2);margin-top:6px;}

/* 弹窗CTA */
.modal-cta{text-align:center;padding-top:8px;}

/* 弹窗响应式 */
@media (max-width:768px){
  .solution-modal-overlay{padding:20px 12px 60px;}
  .modal-hero-img{height:200px;}
  .modal-body{padding:8px 24px 36px;}
  .modal-title{font-size:24px;}
  .modal-features{grid-template-columns:1fr;}
  .modal-values{grid-template-columns:1fr;gap:8px;}
  .modal-value-num{font-size:24px;}
}
@media (max-width:480px){
  .modal-body{padding:8px 18px 28px;}
  .modal-title{font-size:21px;}
  .modal-close{top:8px;right:8px;width:34px;height:34px;}
}

/* 空结果提示 */
.wf-empty{text-align:center;padding:80px 20px;columns:1;}
.wf-empty-icon{width:64px;height:64px;margin:0 auto 16px;color:var(--muted-2);}
.wf-empty-icon svg{width:100%;height:100%;}
.wf-empty p{font-size:16px;color:var(--muted);margin-bottom:20px;}

/* 瀑布流响应式 */
@media (max-width:1100px){
  .waterfall-grid{columns:2 300px;}
}
@media (max-width:768px){
  .solution-filter-bar{position:relative;top:0;}
  .filter-group{flex-direction:column;gap:8px;margin-bottom:16px;}
  .filter-label{margin-bottom:0;}
  .filter-btn{padding:5px 14px;font-size:12px;}
  .waterfall-grid{columns:1;max-width:500px;margin:0 auto;}
  .wf-card-img{height:160px;}
  .wf-card-body{padding:0 20px 24px;}
  .wf-card-title{font-size:18px;}
}
@media (max-width:480px){
  .filter-btns{gap:6px;}
  .filter-btn{padding:4px 11px;font-size:11px;}
  .wf-card-img{height:140px;}
  .wf-card-body{padding:0 16px 20px;}
}

/* ==================== 产品与服务 ==================== */
.products{background:#f1f3f5;}
/* 浅色背景下文字与卡片适配 */
.products .section-title{color:#1a1a2e;}
.products .section-desc{color:#5a6072;}
.products .service-header h3{color:#1a1a2e;}
.products .service-header p{color:#5a6072;}
.products .service-header .service-icon{background:rgba(0,184,118,.06);border-color:rgba(0,184,118,.18);}
.products .svc-card{background:#fff;border-color:#e2e6ea;box-shadow:0 1px 4px rgba(0,0,0,.04);}
.products .svc-card:hover{border-color:var(--green);box-shadow:0 8px 28px rgba(0,0,0,.08);}
.products .svc-card h4{color:#1a1a2e;}
.products .svc-card p{color:#5a6072;}
.products .svc-icon{background:rgba(0,184,118,.06);}
.products .lc-step{background:#fff;border-color:#e2e6ea;box-shadow:0 1px 4px rgba(0,0,0,.04);}
.products .lc-step:hover{border-color:var(--green);box-shadow:0 6px 20px rgba(0,0,0,.08);}
.products .lc-step h4{color:#1a1a2e;}
.products .lc-step p{color:#5a6072;}
.products .lc-num{color:#000;}
.products .delivery-card{background:#fff;border-color:#e2e6ea;box-shadow:0 1px 4px rgba(0,0,0,.04);}
.products .delivery-card h4{color:#1a1a2e;}
.products .tech-tags span{background:rgba(0,184,255,.06);border-color:rgba(0,184,255,.18);color:#0880c8;}
.products .tech-tags span:hover{background:rgba(0,184,255,.12);color:#065d94;}
.products .qi{background:rgba(0,0,0,.025);}
.products .qi-label{color:#7d8496;}
.service-block{margin-bottom:72px;}
.service-block:last-child{margin-bottom:0;}
.service-header{display:flex;align-items:center;gap:22px;margin-bottom:40px;}
.service-icon{width:60px;height:60px;border-radius:var(--radius);background:rgba(0,230,118,.08);border:1px solid rgba(0,230,118,.2);display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--green);}
.service-icon svg{width:30px;height:30px;}
.service-label{font-size:12px;font-weight:700;letter-spacing:3px;color:var(--green);}
.service-header h3{font-size:26px;color:#fff;margin:6px 0;}
.service-header p{color:var(--muted);font-size:15px;}

.service-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;}
.svc-card{padding:28px 22px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);transition:all .35s var(--ease);}
.svc-card:hover{transform:translateY(-4px);border-color:var(--green);box-shadow:var(--shadow-lg);}
.svc-icon{width:44px;height:44px;border-radius:10px;background:rgba(0,230,118,.08);display:flex;align-items:center;justify-content:center;margin-bottom:16px;color:var(--green);}
.svc-icon svg{width:22px;height:22px;}
.svc-card h4{font-size:16px;color:#fff;margin-bottom:8px;}
.svc-card p{font-size:13.5px;color:var(--muted);line-height:1.65;}

/* 开发生命周期 */
.lifecycle{margin-bottom:40px;overflow-x:auto;padding:20px 0;}
.lc-track{display:flex;align-items:flex-start;gap:0;min-width:720px;padding:0 10px;}
.lc-step{flex:1;text-align:center;position:relative;padding:24px 16px 20px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);transition:all .35s var(--ease);}
.lc-step:hover{border-color:var(--green);transform:translateY(-4px);box-shadow:var(--glow-green);}
.lc-num{font-size:32px;font-weight:900;color:rgba(255,255,255,.06);margin-bottom:8px;}
.lc-ring{width:56px;height:56px;border-radius:50%;margin:0 auto 12px;border:3px solid;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;color:var(--green);animation:pulseRing 3s ease-in-out infinite;}
.ring-1{border-color:var(--green);box-shadow:0 0 16px rgba(0,230,118,.25);color:var(--green);}
.ring-2{border-color:var(--blue);box-shadow:0 0 16px rgba(0,184,255,.25);animation-delay:.6s;color:var(--blue);}
.ring-3{border-color:#FF5E5E;box-shadow:0 0 16px rgba(255,94,94,.25);animation-delay:1.2s;color:#FF5E5E;}
.ring-4{border-color:#FF8C28;box-shadow:0 0 16px rgba(255,140,40,.25);animation-delay:1.8s;color:#FF8C28;}
.ring-5{border-color:var(--green-2);box-shadow:0 0 16px rgba(0,255,136,.25);animation-delay:2.4s;color:var(--green-2);}
@keyframes pulseRing{0%,100%{transform:scale(1);opacity:1;}50%{transform:scale(1.25);opacity:.5;}}
.lc-step h4{font-size:15px;color:#fff;margin-bottom:8px;}
.lc-step p{font-size:12.5px;color:var(--muted);line-height:1.65;}
.lc-connector{width:40px;display:flex;align-items:center;justify-content:center;flex-shrink:0;padding-top:44px;}
.lc-connector span{display:block;width:100%;height:2px;background:linear-gradient(to right,var(--green),var(--blue));position:relative;}
.lc-connector span::after{content:"";position:absolute;right:-4px;top:-3px;width:8px;height:8px;background:var(--green);border-radius:50%;}

/* 交付能力 */
.service-delivery{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.delivery-card{padding:28px 30px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);}
.delivery-card h4{font-size:16px;color:#fff;margin-bottom:18px;}
.tech-tags{display:flex;flex-wrap:wrap;gap:8px;}
.tech-tags span{padding:6px 12px;background:rgba(0,184,255,.08);border:1px solid rgba(0,184,255,.2);border-radius:999px;font-size:12px;color:var(--blue-2);transition:all .2s;}
.tech-tags span:hover{background:rgba(0,184,255,.18);color:var(--blue-3);border-color:var(--blue);}
.quality-items{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.qi{text-align:center;padding:14px 8px;background:rgba(255,255,255,.02);border-radius:var(--radius-sm);}
.qi-val{display:block;font-size:22px;font-weight:800;color:var(--green);text-shadow:0 0 20px rgba(0,230,118,.25);}
.qi-label{display:block;font-size:11px;color:var(--muted-2);margin-top:4px;}

/* ==================== 关于我们 ==================== */
.about{background:var(--bg-dark);}
.philosophy{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-bottom:72px;}
.phil-card{text-align:center;padding:40px 28px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);transition:all .35s var(--ease);}
.phil-card:hover{transform:translateY(-6px);border-color:var(--green);box-shadow:var(--shadow-lg);}
.phil-icon{width:56px;height:56px;margin:0 auto 22px;display:flex;align-items:center;justify-content:center;color:var(--green);}
.phil-icon svg{width:36px;height:36px;}
.phil-card h3{font-size:22px;color:#fff;margin-bottom:12px;}
.phil-card p{color:var(--muted);font-size:14.5px;line-height:1.7;}

.certs-title{text-align:center;font-size:24px;color:#fff;margin-bottom:36px;}
.certs-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.cert-item{text-align:center;padding:32px 20px;background:var(--bg-card);border:1px solid var(--line);border-radius:var(--radius-lg);transition:all .35s var(--ease);}
.cert-item:hover{border-color:var(--blue);transform:translateY(-4px);}
.cert-icon{width:48px;height:48px;margin:0 auto 16px;color:var(--blue);}
.cert-icon svg{width:100%;height:100%;}
.cert-item h4{font-size:16px;color:#fff;margin-bottom:8px;}
.cert-item p{font-size:13px;color:var(--muted-2);}

/* ==================== 联系我们 ==================== */
.contact{background:#f1f3f5;}
/* 浅色背景适配 */
.contact .section-title{color:#1a1a2e;}
.contact .section-desc{color:#5a6072;}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:48px;background:#fff;border:1px solid #e2e6ea;border-radius:var(--radius-lg);padding:40px;box-shadow:0 1px 4px rgba(0,0,0,.04);}
.contact-info{display:flex;flex-direction:column;gap:24px;}
.info-item{display:flex;gap:14px;align-items:flex-start;}
.info-icon{width:44px;height:44px;background:rgba(0,184,118,.06);border:1px solid rgba(0,184,118,.18);border-radius:12px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--green);}
.info-item h4{font-size:15px;color:#1a1a2e;margin-bottom:4px;}
.info-item p{color:#5a6072;font-size:14px;}
.contact-form .form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:4px;}
.form-field{margin-bottom:16px;}
.form-field label{display:block;font-size:13px;font-weight:600;margin-bottom:7px;color:#4a5060;}
.form-field .req{color:var(--green);}
.form-field input,.form-field textarea,.form-field select{width:100%;padding:13px 16px;border:1.5px solid #d8dde3;border-radius:var(--radius-sm);font-size:15px;font-family:inherit;color:#1a1a2e;background:#f8f9fb;transition:all .25s;resize:vertical;}
.form-field select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center;padding-right:36px;}
.form-field input:focus,.form-field textarea:focus,.form-field select:focus{outline:none;border-color:var(--green);background:#fff;box-shadow:0 0 0 3px rgba(0,184,118,.1);}
.form-tip{margin-top:10px;font-size:14px;color:#5a6072;}
.form-tip.success{color:var(--green);}
.form-tip.error{color:#FF5E5E;}
/* 提交按钮 */
.contact-form .btn-cta{width:100%;padding:14px 0;font-size:16px;background:linear-gradient(135deg,var(--green),#00c85e);border:none;color:#fff;}
/* 关注我们二维码 */
.qr-follow{margin-top:auto;padding-top:20px;border-top:1px dashed #d8dde3;}
.qr-follow-title{font-size:13px;font-weight:700;color:#4a5060;letter-spacing:2px;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.qr-follow-title::before{content:"";width:3px;height:14px;background:linear-gradient(180deg,var(--green),var(--blue));border-radius:2px;}
.qr-follow-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;}
.qr-follow-item{display:flex;flex-direction:column;align-items:center;gap:6px;}
.qr-img{width:100%;aspect-ratio:1/1;background:#fff;border:1.5px solid #e2e6ea;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;padding:6px;transition:all .3s;cursor:pointer;position:relative;}
.qr-img:hover{border-color:var(--green);box-shadow:0 6px 18px rgba(0,184,118,.15);transform:translateY(-2px);}
.qr-img img{width:100%;height:100%;object-fit:contain;display:block;}
.qr-label{font-size:12.5px;font-weight:600;color:#4a5060;letter-spacing:1px;}
.qr-follow-item:hover .qr-label{color:var(--green);}

/* ==================== Footer ==================== */
.site-footer,
.footer{background:#040B18;padding:60px 0 24px;border-top:1px solid var(--line);}
.site-footer .container,
.footer .container{max-width:var(--max-w);}
.site-footer .footer-grid,
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:48px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.05);align-items:flex-start;}
/* 品牌列 */
.footer-brand-row{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.footer-logo{width:60px;height:60px;object-fit:contain;filter:brightness(1.15);}
.footer-brand-name{font-size:18px;font-weight:800;color:#fff;letter-spacing:1px;}
.footer-tagline{font-size:14.5px;color:#fff;font-weight:600;margin-bottom:6px;letter-spacing:.5px;}
.footer-desc{font-size:13px;color:var(--muted-2);line-height:1.7;max-width:280px;}
/* 链接列 */
.site-footer .footer-col h4,
.footer-col h4{color:#fff;font-size:14px;font-weight:700;margin-bottom:18px;position:relative;padding-left:0;}
.site-footer .footer-col a,
.footer-col a{display:block;font-size:13.5px;margin-bottom:11px;color:var(--muted-2);transition:color .2s var(--ease),transform .2s var(--ease);width:fit-content;}
.site-footer .footer-col a:hover,
.footer-col a:hover{color:var(--green);transform:translateX(3px);}
/* 底部一行 */
.site-footer .footer-bottom,
.footer-bottom{padding-top:24px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;font-size:13px;color:var(--muted-2);}
.footer-copy{color:var(--muted-2);}
.footer-record{display:flex;align-items:center;gap:10px;flex-wrap:wrap;}
.footer-record a{color:var(--muted-2);transition:color .2s;}
.footer-record a:hover{color:var(--green);}
.footer-divider{color:var(--muted-2);opacity:.5;}

/* ==================== 回到顶部 ==================== */
.back-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;background:linear-gradient(135deg,var(--green),#00C853);color:#060D1A;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:var(--glow-green);opacity:0;transform:translateY(20px);pointer-events:none;transition:all .3s var(--ease);z-index:50;}
.back-top.show{opacity:1;transform:translateY(0);pointer-events:auto;}
.back-top:hover{transform:translateY(-4px);box-shadow:0 0 56px rgba(0,230,118,.5);}

/* --- 滚动入场 --- */
.reveal{opacity:0;transform:translateY(30px);transition:opacity .8s var(--ease),transform .8s var(--ease);}
.reveal.visible{opacity:1;transform:translateY(0);}

/* ==================================================
   响应式
   ================================================== */

@media (max-width:1200px){.container{padding:0 20px;}}

/* 平板横屏 (< 1024) */
@media (max-width:1024px){
  .section{padding:80px 0;}
  .section-head{margin-bottom:52px;}
  .hero-grid{grid-template-columns:1fr;min-height:auto;text-align:center;gap:0;padding-top:calc(var(--nav-h) + 80px);padding-bottom:20px;}
  .hero-left{align-items:center;}
  .hero-badge{width:fit-content;}
  .hero-subtitle{margin-left:auto;margin-right:auto;}
  .hero-actions{justify-content:center;}
  .hero-stats{max-width:600px;margin:0 auto;grid-template-columns:repeat(4,1fr);gap:0;}
  .stat-item{text-align:left;padding:0 0 0 22px;}
  .stat-item:first-child{padding-left:0;}
  .hero-right{display:none;}
  .stat-divider{display:none;}
  .quick-entry{grid-template-columns:1fr;}
  .service-cards{grid-template-columns:repeat(2,1fr);}
  .service-delivery{grid-template-columns:1fr;}
  .philosophy{grid-template-columns:1fr;max-width:480px;margin:0 auto 64px;}
  .certs-grid{grid-template-columns:repeat(2,1fr);}
  .feat-grid{grid-template-columns:repeat(2,1fr);}
  .contact-grid{grid-template-columns:1fr;gap:32px;padding:32px;}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .scroll-hint{display:none;}
  /* 架构图移动端 */
  .arch-app-grid{grid-template-columns:repeat(2,1fr);gap:10px;}
  .arch-app-node{padding:14px 8px 12px;gap:6px;}
  .arch-app-icon{font-size:24px;}
  .arch-app-name{font-size:12px;}
  .arch-core-card{padding:24px 24px;}
  .arch-core-title{font-size:18px;}
  .arch-core-meta{flex-direction:column;gap:12px;}
  .arch-device-row{flex-direction:column;gap:20px;}
  .arch-device-divider{width:100%;height:1px;}
  /* 关注我们二维码移动端 */
  .qr-follow-grid{gap:10px;}
  .qr-follow-title{font-size:12px;}
  .qr-label{font-size:11.5px;}
}

/* 平板竖屏 & 手机 (< 768) */
@media (max-width:768px){
  :root{--nav-h:64px;}
  .navbar{background:rgba(6,13,26,.95);}
  .nav-toggle{display:flex;}
  .nav-menu{position:fixed;top:var(--nav-h);left:0;right:0;background:var(--bg-dark);flex-direction:column;align-items:stretch;gap:0;padding:12px 0 20px;border-top:1px solid var(--line);box-shadow:0 12px 32px rgba(0,0,0,.6);transform:translateY(-12px);opacity:0;pointer-events:none;transition:all .3s var(--ease);max-height:calc(100vh - var(--nav-h));overflow-y:auto;}
  .nav-menu.open{transform:translateY(0);opacity:1;pointer-events:auto;}
  .nav-link{padding:14px 24px;border-radius:0;font-size:16px;}
  .nav-link.active::after{display:none;}
  .nav-cta{margin:8px 24px 0;text-align:center;border-radius:10px;}
  .section{padding:60px 0;}
  .section-head{margin-bottom:36px;}
  .hero-grid{padding-top:calc(var(--nav-h) + 60px);}
  .hero-badge{font-size:11px;padding:6px 16px;}
  .hero-title{font-size:clamp(30px,8vw,42px);letter-spacing:-1px;}
  .hero-subtitle{font-size:15px;max-width:100%;}
  .hero-stats{grid-template-columns:1fr 1fr;gap:32px 0;padding:24px 0 0;max-width:480px;}
  .stat-item{text-align:left;padding:0 0 0 20px;}
  .stat-item:nth-child(3){padding-left:0;}
  .stat-item:nth-child(2)::before,.stat-item:nth-child(4)::before{display:block;}
  .stat-num{font-size:30px;}
  .hero-actions{flex-direction:column;width:100%;margin-bottom:36px;}
  .hero-actions .btn{width:100%;justify-content:center;}
  .qe-card{flex-direction:column;text-align:center;}
  .qe-arrow{opacity:1;}
  .cluster-header{flex-direction:column;text-align:center;align-items:center;}
  .sol-card-inner{padding:24px 18px;}
  .sol-card-head{flex-wrap:wrap;}
  .sol-num{font-size:24px;}
  .sol-card-head h3{font-size:18px;}
  .arch-diagram{flex-direction:column;align-items:center;}
  .arch-arrow{transform:rotate(90deg);}
  .feat-grid{grid-template-columns:1fr;}
  .service-header{flex-direction:column;text-align:center;}
  .service-cards{grid-template-columns:1fr;}
  .lc-track{flex-direction:column;min-width:auto;gap:0;align-items:center;}
  .lc-step{width:100%;max-width:320px;margin:0 auto;}
  .lc-connector{width:64px;height:54px;padding-top:0;margin:0 auto;}
  .lc-connector span{height:100%;width:100%;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 64 54' fill='none'><defs><linearGradient id='g' x1='0' y1='0' x2='0' y2='1'><stop offset='0' stop-color='%2300e676'/><stop offset='1' stop-color='%2300b8ff'/></linearGradient></defs><path d='M32 2 C 58 16 6 30 32 44 L 32 48' stroke='url(%23g)' stroke-width='2.5' stroke-linecap='round' fill='none'/><circle cx='32' cy='51' r='3' fill='%2300b8ff'/></svg>") no-repeat center/contain;}
  .lc-connector span::after{display:none;}
  .quality-items{grid-template-columns:repeat(2,1fr);}
  .philosophy{grid-template-columns:1fr;}
  .certs-grid{grid-template-columns:1fr;}
  .contact-grid{padding:24px 18px;}
  .contact-form .form-row{grid-template-columns:1fr;gap:0;}
  .site-footer,
  .footer{padding:40px 0 16px;}
  .site-footer .footer-grid,
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer .footer-bottom,
  .footer-bottom{flex-direction:column;text-align:center;}
  .footer-brand{text-align:center;}
  .footer-brand-row{justify-content:center;}
  .footer-desc{max-width:100%;}
  .mobile-br{display:block;}
}

/* 小屏 (< 480) */
@media (max-width:480px){
  .container{padding:0 16px;}
  .brand-text{font-size:17px;}
  .hero-title{font-size:30px;letter-spacing:-1px;}
  .hero-grid{padding-top:calc(var(--nav-h) + 50px);}
  .hero-stats{grid-template-columns:1fr 1fr;gap:24px 0;padding:20px 0 0;max-width:380px;}
  .stat-item{text-align:left;padding:0 0 0 16px;}
  .stat-item:nth-child(3){padding-left:0;}
  .stat-num{font-size:26px;}
  .stat-label{font-size:12px;}
  .sol-section h4{font-size:14px;}
}

/* 大屏 (>=1600) */
@media (min-width:1600px){
  :root{--max-w:1280px;}
  body{font-size:17px;}
}

/* ====== 二级页面独立头部 ====== */
.subpage-hero{position:relative;padding:calc(var(--nav-h) + 72px) 0 56px;text-align:center;overflow:hidden;background:linear-gradient(180deg,var(--deep) 0%,var(--dark) 100%);}
.subpage-hero::before{content:"";position:absolute;inset:0;background:radial-gradient(ellipse 70% 50% at 50% 60%,rgba(0,184,255,.07) 0%,transparent 70%);pointer-events:none;}
.subpage-eyebrow{font-size:11px;font-weight:700;letter-spacing:3px;color:var(--green);text-transform:uppercase;margin-bottom:10px;}
.subpage-title{font-size:clamp(26px,4vw,42px);font-weight:900;color:var(--light);margin-bottom:10px;}
.subpage-desc{font-size:14.5px;color:var(--muted);max-width:520px;margin:0 auto;line-height:1.7;}
.subpage-line{width:52px;height:2px;background:var(--green);margin:18px auto 0;border-radius:1px;opacity:.7;}
/* 内容间隔 */
.subpage-body{padding:80px 0 0;}
.subpage-body .section{padding-top:0;}
.subpage-body .section + .section{padding-top:80px;}
/* 二级页面响应式 */
@media (max-width:768px){
  .subpage-hero{padding:calc(var(--nav-h) + 48px) 0 40px;}
  .subpage-title{font-size:24px;}
  .subpage-body .section + .section{padding-top:56px;}
}

/* 减少动效 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;}
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;}
}