/* ============================================================
   富潮新零售 ERP 系统 · 官网样式（淡白 / 高级感浅色主题）
   品牌色：深蓝 #182878 / 青蓝 #3098D0 / 白 #FFFFFF
   ============================================================ */
:root{
  --navy:#182878;
  --navy-2:#2a3fa8;
  --cyan:#3098d0;
  --cyan-2:#4fc3f7;
  --ink:#14204a;
  --ink-2:#3e4d72;
  --muted:#5c6b88;
  --faint:#8493b0;
  --bg:#f7f9fd;
  --card:#ffffff;
  --line:rgba(24,40,120,.10);
  --line-2:rgba(48,152,208,.24);
  --shadow:0 22px 56px rgba(28,52,120,.09);
  --shadow-lg:0 36px 84px rgba(28,52,120,.15);
  --radius:20px;
  --font:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  --num:"DIN Alternate","Bahnschrift","Segoe UI",var(--font);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:88px}
body{
  margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);
  font-size:16px;line-height:1.7;-webkit-font-smoothing:antialiased;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,p{margin:0}
::selection{background:rgba(48,152,208,.18);color:var(--navy)}
.container{width:min(1200px,calc(100% - 48px));margin-inline:auto}
.grad-text{
  background:linear-gradient(100deg,#182878 0%,#2258b4 36%,#3098d0 76%,#4fc3f7 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}

/* ---------- 背景层：淡白 + 极淡品牌光晕 ---------- */
.bg-layer{position:fixed;inset:0;z-index:-1;overflow:hidden;pointer-events:none;
  background:
    radial-gradient(1100px 720px at 82% 4%,rgba(48,152,208,.11),transparent 62%),
    radial-gradient(940px 640px at 4% 34%,rgba(24,40,120,.07),transparent 66%),
    radial-gradient(760px 560px at 74% 92%,rgba(79,195,247,.09),transparent 70%),
    linear-gradient(180deg,#ffffff 0%,#f8fafd 42%,#f2f7fd 76%,#fbfcff 100%);
}
.bg-glow{position:absolute;border-radius:50%;filter:blur(100px);opacity:.5}
.glow-a{width:540px;height:540px;top:-180px;right:-90px;background:radial-gradient(circle,rgba(48,152,208,.28),transparent 70%);animation:drift 18s ease-in-out infinite alternate}
.glow-b{width:620px;height:620px;top:40%;left:-260px;background:radial-gradient(circle,rgba(24,40,120,.14),transparent 70%);animation:drift 22s ease-in-out infinite alternate-reverse}
.glow-c{width:440px;height:440px;bottom:-180px;right:14%;background:radial-gradient(circle,rgba(79,195,247,.2),transparent 70%);animation:drift 26s ease-in-out infinite alternate}
.bg-grid{position:absolute;inset:0;opacity:.7;
  background-image:linear-gradient(rgba(24,40,120,.032) 1px,transparent 1px),linear-gradient(90deg,rgba(24,40,120,.032) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:linear-gradient(to bottom,#000 0%,transparent 78%);mask-image:linear-gradient(to bottom,#000 0%,transparent 78%);
}
#particles{position:absolute;inset:0;width:100%;height:100%;opacity:.75}
.grid-floor{
  position:absolute;left:-30%;right:-30%;bottom:-30%;height:72%;opacity:.55;
  background-image:linear-gradient(rgba(48,152,208,.14) 1px,transparent 1px),linear-gradient(90deg,rgba(48,152,208,.14) 1px,transparent 1px);
  background-size:70px 70px;
  transform:perspective(560px) rotateX(74deg);
  -webkit-mask-image:linear-gradient(to top,#000,transparent 78%);mask-image:linear-gradient(to top,#000,transparent 78%);
}
@keyframes drift{from{transform:translate3d(0,0,0) scale(1)}to{transform:translate3d(70px,-50px,0) scale(1.16)}}

/* ---------- 滚动进度 ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:2px;width:0;z-index:100;
  background:linear-gradient(90deg,var(--navy),var(--cyan),var(--cyan-2));box-shadow:0 0 12px rgba(48,152,208,.35)}

/* ---------- 导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.66);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  border-bottom:1px solid rgba(24,40,120,.07);transition:background .3s,box-shadow .3s,border-color .3s}
.site-header.scrolled{background:rgba(255,255,255,.9);border-bottom-color:var(--line);box-shadow:0 8px 26px rgba(28,52,120,.07)}
.site-header::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--navy),var(--cyan) 55%,transparent);opacity:.7}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:78px;gap:24px}
.brand{display:inline-flex;align-items:center;gap:12px;flex-shrink:0}
.brand-mark{width:50px;height:50px;display:grid;place-items:center;border-radius:15px;background:#fff;
  border:1px solid rgba(24,40,120,.12);box-shadow:0 8px 20px rgba(28,52,120,.12),inset 0 1px 0 #fff}
.brand-mark img{width:44px;height:44px;object-fit:contain;border-radius:10px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-text strong{font-size:19px;letter-spacing:.16em;font-weight:800;color:var(--navy)}
.brand-text em{font-style:normal;font-size:11px;color:var(--faint);letter-spacing:.14em;margin-top:3px}
.nav{display:flex;align-items:center;gap:30px}
.nav-link{font-size:14px;color:var(--ink-2);position:relative;padding:6px 0;transition:color .25s}
.nav-link::after{content:"";position:absolute;left:0;bottom:0;width:0;height:2px;background:linear-gradient(90deg,var(--navy),var(--cyan));transition:width .28s}
.nav-link:hover,.nav-link.active{color:var(--navy)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.menu-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);border-radius:12px;background:#fff;cursor:pointer;padding:11px;box-shadow:0 4px 12px rgba(28,52,120,.06)}
.menu-toggle span{display:block;height:2px;background:var(--navy);margin:4px 0;border-radius:2px;transition:.25s}
.menu-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.menu-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border-radius:999px;font-weight:600;
  cursor:pointer;border:1px solid transparent;transition:transform .25s,box-shadow .25s,background .25s,border-color .25s;white-space:nowrap}
.btn:hover{transform:translateY(-3px)}
.btn-primary{color:#fff;background:linear-gradient(100deg,var(--navy),var(--cyan) 95%);
  box-shadow:0 12px 28px rgba(24,60,150,.22),inset 0 1px 0 rgba(255,255,255,.22)}
.btn-primary:hover{box-shadow:0 18px 38px rgba(24,60,150,.3),inset 0 1px 0 rgba(255,255,255,.28)}
.btn-ghost{color:var(--navy);background:rgba(255,255,255,.86);border-color:var(--line-2);box-shadow:0 6px 18px rgba(28,52,120,.06)}
.btn-ghost:hover{background:#fff;border-color:rgba(48,152,208,.5);box-shadow:0 12px 26px rgba(28,52,120,.12)}
.btn-lg{padding:14px 30px;font-size:15px}
.btn-sm{padding:9px 20px;font-size:13px}
.btn-block{width:100%}

/* ---------- HERO ---------- */
.hero{position:relative;padding:72px 0 0}
.hero-inner{display:grid;grid-template-columns:1.02fr .98fr;align-items:center;gap:40px;min-height:620px}
.hero-copy{max-width:600px}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:11px;letter-spacing:.2em;color:#2678ac;
  border:1px solid var(--line-2);background:rgba(48,152,208,.07);border-radius:999px;padding:8px 16px;margin-bottom:28px}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);box-shadow:0 0 10px rgba(48,152,208,.7);animation:blink 2s infinite}
.eyebrow-cn{letter-spacing:.08em;color:var(--navy);border-left:1px solid var(--line-2);padding-left:10px}
@keyframes blink{50%{opacity:.35}}
.hero-title{font-size:clamp(36px,3.8vw,56px);line-height:1.32;font-weight:800;letter-spacing:-.01em;margin-bottom:24px;color:var(--ink)}
.hero-title>span{display:block;text-shadow:0 10px 34px rgba(24,40,120,.09);white-space:nowrap}
.hero-title .grad-text{display:inline}
.hero-sub{font-size:16.5px;color:var(--muted);max-width:540px;line-height:1.95;margin-bottom:34px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:38px}
.hero-tags{display:flex;flex-wrap:wrap;gap:12px 26px;font-size:13px;color:var(--muted)}
.hero-tags li{display:flex;align-items:center;gap:8px}
.tick{display:grid;place-items:center;width:18px;height:18px;border-radius:50%;font-size:11px;color:var(--cyan);
  border:1px solid rgba(48,152,208,.4);background:rgba(48,152,208,.08)}

/* --- 3D 数据驾驶舱（浅色玻璃 + 蓝色数据） --- */
.hero-visual{position:relative;height:560px;display:flex;align-items:center;justify-content:center}
.orbit{position:absolute;border:1px solid rgba(48,152,208,.18);border-radius:50%;pointer-events:none}
.orbit-1{width:470px;height:470px;animation:spinSlow 34s linear infinite;border-top-color:rgba(48,152,208,.55)}
.orbit-2{width:590px;height:400px;border-style:dashed;border-color:rgba(24,40,120,.12);animation:spinSlowTilt 48s linear infinite reverse}
@keyframes spinSlow{to{transform:rotate(360deg)}}
@keyframes spinSlowTilt{from{transform:rotate(-24deg)}to{transform:rotate(336deg)}}
.visual-stage{position:relative;width:100%;max-width:520px;height:460px;perspective:1100px;transform-style:preserve-3d;
  --rx:9deg;--ry:-14deg;animation:stageFloat 7s ease-in-out infinite}
@keyframes stageFloat{50%{transform:translateY(-9px)}}
.dash-shadow{position:absolute;left:6%;right:6%;bottom:2px;height:54px;border-radius:50%;
  background:radial-gradient(ellipse,rgba(28,62,140,.2),transparent 70%);filter:blur(24px)}
.dash-stack{position:absolute;inset:22px 14px 22px 14px;border-radius:20px;
  border:1px solid rgba(48,152,208,.2);background:linear-gradient(140deg,rgba(255,255,255,.92),rgba(226,238,252,.88));
  box-shadow:0 22px 48px rgba(28,52,120,.13)}
.stack-back{transform:translate3d(26px,20px,-90px) rotateX(var(--rx)) rotateY(var(--ry));opacity:.65}
.stack-mid{transform:translate3d(13px,10px,-45px) rotateX(var(--rx)) rotateY(var(--ry));opacity:.85}
.dash-panel{
  position:absolute;inset:0;border-radius:18px;overflow:hidden;
  background:linear-gradient(155deg,#ffffff 0%,#f7faff 58%,#eef5fd 100%);
  border:1px solid rgba(24,40,120,.14);
  box-shadow:0 38px 78px rgba(28,52,120,.17),0 10px 26px rgba(28,52,120,.08),inset 0 1px 0 #fff;
  transform:rotateX(var(--rx)) rotateY(var(--ry)) rotateZ(1deg);
  transform-style:preserve-3d;transition:transform .35s cubic-bezier(.2,.8,.2,1);
}
.dash-panel::before{content:"";position:absolute;inset:0;pointer-events:none;z-index:3;
  background:linear-gradient(115deg,rgba(255,255,255,.28),transparent 26%,transparent 74%,rgba(48,152,208,.04))}
.dash-topbar{display:flex;align-items:center;gap:10px;height:46px;padding:0 16px;
  background:linear-gradient(180deg,#ffffff,#f5f9fe);border-bottom:1px solid rgba(24,40,120,.08)}
.dots{display:flex;gap:6px}.dots i{width:8px;height:8px;border-radius:50%;background:#ff8f8f}
.dots i:nth-child(2){background:#ffd072}.dots i:nth-child(3){background:#6fd6ad}
.dash-logo{width:22px;height:22px;border-radius:6px;object-fit:contain;border:1px solid rgba(24,40,120,.1);background:#fff}
.dash-title{font-size:12px;color:var(--navy);letter-spacing:.06em;font-weight:700}
.live{margin-left:auto;font-size:10px;letter-spacing:.12em;color:#1e9e77;display:flex;align-items:center;gap:6px}
.live i{width:6px;height:6px;border-radius:50%;background:#2fb98a;box-shadow:0 0 8px rgba(47,185,138,.6);animation:blink 1.8s infinite}
.dash-body{padding:14px}
.kpi-row{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.kpi{background:#fff;border:1px solid rgba(24,40,120,.08);border-radius:10px;padding:9px 11px;
  box-shadow:0 4px 14px rgba(28,52,120,.05)}
.kpi span{display:block;font-size:10.5px;color:var(--faint)}
.kpi strong{display:block;font-family:var(--num);font-size:22px;line-height:1.35;color:var(--ink)}
.kpi strong small{font-size:12px;color:var(--muted);margin-left:2px}
.kpi em{font-style:normal;font-size:10px;color:#2a86c4}
.chart-area{margin-top:10px;background:#fff;border:1px solid rgba(24,40,120,.08);border-radius:10px;padding:12px 12px 8px;
  box-shadow:0 4px 14px rgba(28,52,120,.04)}
.chart-head{display:flex;justify-content:space-between;align-items:center;font-size:11px;color:var(--ink-2);margin-bottom:6px}
.chart-legend{font-size:9.5px;color:var(--faint);display:flex;align-items:center;gap:5px}
.chart-legend i{display:inline-block;width:8px;height:8px;border-radius:2px;margin-left:6px}
.lg-a{background:#3098d0}.lg-b{background:#6f6bff}
.line-chart{width:100%;height:96px;display:block}
.chart-grid line{stroke:rgba(24,40,120,.11);stroke-width:1;stroke-dasharray:4 6}
.area{opacity:.85}
.line{stroke-dasharray:900;stroke-dashoffset:900;animation:draw 2.4s ease forwards .5s}
@keyframes draw{to{stroke-dashoffset:0}}
.pulse-dot{fill:#3098d0;filter:drop-shadow(0 0 5px rgba(48,152,208,.6));animation:blink 1.8s infinite}
.chart-x{display:flex;justify-content:space-between;font-size:9px;color:var(--faint);margin-top:2px}
.bars-row{margin-top:10px;background:#fff;border:1px solid rgba(24,40,120,.08);border-radius:10px;padding:11px 12px 8px;
  box-shadow:0 4px 14px rgba(28,52,120,.04)}
.bars-title{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-2)}
.bars-more{font-family:var(--num);font-size:10px;color:var(--cyan);letter-spacing:.1em}
.bars{display:flex;align-items:flex-end;justify-content:space-around;height:52px;margin-top:8px;gap:10px}
.bar-item{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:flex-end;height:100%;gap:5px}
.bar-item i{display:block;width:100%;height:var(--h);border-radius:4px 4px 1px 1px;
  background:linear-gradient(180deg,#4fc3f7,rgba(48,152,208,.22));box-shadow:0 0 10px rgba(48,152,208,.18);
  transform-origin:bottom;animation:grow .9s cubic-bezier(.2,.8,.2,1) both}
.bar-item:nth-child(2) i{animation-delay:.1s}.bar-item:nth-child(3) i{animation-delay:.2s}
.bar-item:nth-child(4) i{animation-delay:.3s}.bar-item:nth-child(5) i{animation-delay:.4s}
@keyframes grow{from{transform:scaleY(0)}to{transform:scaleY(1)}}
.bar-item b{font-weight:400;font-size:9px;color:var(--faint);white-space:nowrap}
.float-card{
  position:absolute;display:flex;align-items:center;gap:10px;padding:12px 15px;border-radius:13px;
  background:rgba(255,255,255,.97);border:1px solid rgba(48,152,208,.28);
  box-shadow:0 18px 40px rgba(28,52,120,.16),0 0 24px rgba(48,152,208,.1);
  backdrop-filter:blur(10px);transform:translateZ(120px);z-index:10;
}
.float-card b{display:block;font-size:12px;color:var(--ink);font-weight:700}
.float-card small{display:block;font-size:10px;color:var(--muted);white-space:nowrap}
.fc-icon{width:30px;height:30px;border-radius:9px;display:grid;place-items:center;font-size:15px;color:var(--navy);
  background:rgba(24,40,120,.08);border:1px solid rgba(24,40,120,.14)}
.fc-cyan{color:var(--cyan);background:rgba(48,152,208,.1);border-color:rgba(48,152,208,.28)}
.fc-1{left:8px;top:-42px;animation:floaty 5.5s ease-in-out infinite}
.fc-2{right:8px;bottom:-40px;animation:floaty 6.5s ease-in-out infinite -2s}
@keyframes floaty{50%{transform:translateZ(120px) translateY(-12px)}}
.cube{position:absolute;right:-6px;top:-26px;width:54px;height:54px;transform-style:preserve-3d;
  transform:translateZ(140px) rotateX(-24deg) rotateY(28deg);animation:cubeSpin 14s linear infinite;z-index:5}
@keyframes cubeSpin{to{transform:translateZ(140px) rotateX(336deg) rotateY(388deg)}}
.cube-f{position:absolute;inset:0;border:1px solid rgba(48,152,208,.5);
  background:linear-gradient(135deg,rgba(79,195,247,.15),rgba(24,40,120,.05));box-shadow:0 0 16px rgba(48,152,208,.12) inset}
.f1{transform:translateZ(27px)}.f2{transform:rotateY(180deg) translateZ(27px)}
.f3{transform:rotateY(90deg) translateZ(27px)}.f4{transform:rotateY(-90deg) translateZ(27px)}
.f5{transform:rotateX(90deg) translateZ(27px)}.f6{transform:rotateX(-90deg) translateZ(27px)}
.visual-caption{position:absolute;bottom:-4px;font-size:11.5px;color:var(--faint);letter-spacing:.14em}

/* --- 场景滚动条 --- */
.marquee-wrap{margin-top:56px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
  background:linear-gradient(90deg,rgba(48,152,208,.045),rgba(24,40,120,.025));padding:16px 0 18px;overflow:hidden}
.marquee-label{font-size:11px;letter-spacing:.2em;color:var(--faint);text-align:center;margin-bottom:12px}
.marquee{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent);mask-image:linear-gradient(90deg,transparent,#000 12%,#000 88%,transparent)}
.marquee-track{display:flex;align-items:center;gap:36px;width:max-content;animation:marquee 30s linear infinite}
.marquee-track span{font-size:14px;color:var(--ink-2);letter-spacing:.08em;white-space:nowrap}
.marquee-track i{width:5px;height:5px;border-radius:50%;background:var(--cyan);opacity:.6;flex:none}
@keyframes marquee{to{transform:translateX(-50%)}}

/* ---------- 通用区块 ---------- */
.section{position:relative;padding:110px 0}
.section-alt{background:linear-gradient(180deg,rgba(255,255,255,0),rgba(238,245,253,.75),rgba(255,255,255,0));
  border-top:1px solid rgba(24,40,120,.05);border-bottom:1px solid rgba(24,40,120,.05)}
.section-head{text-align:center;max-width:720px;margin:0 auto 56px}
.section-head.left{text-align:left;margin:0 0 34px;max-width:none}
.section-kicker{display:inline-block;font-size:11px;letter-spacing:.24em;color:#2a86c4;font-weight:700;margin-bottom:16px}
.section-head h2{font-size:clamp(28px,3.1vw,42px);font-weight:800;line-height:1.35;letter-spacing:-.01em;margin-bottom:16px;color:var(--ink)}
.section-head p{color:var(--muted);font-size:15.5px;line-height:1.9}

/* ---------- 核心能力 ---------- */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;perspective:1000px}
.cap-card{position:relative;padding:30px 28px 26px;border-radius:var(--radius);overflow:hidden;
  background:#fff;border:1px solid var(--line);box-shadow:0 14px 36px rgba(28,52,120,.06);
  transform-style:preserve-3d;transition:transform .35s cubic-bezier(.2,.8,.2,1),border-color .35s,box-shadow .35s}
.cap-card::before{content:"";position:absolute;inset:-1px;border-radius:inherit;padding:1px;pointer-events:none;opacity:0;transition:opacity .35s;
  background:linear-gradient(135deg,rgba(48,152,208,.75),rgba(24,40,120,.4),transparent 65%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;mask-composite:exclude}
.cap-card::after{content:"";position:absolute;width:180px;height:180px;top:-90px;right:-80px;border-radius:50%;pointer-events:none;
  background:radial-gradient(circle,rgba(48,152,208,.13),transparent 70%);opacity:0;transition:opacity .35s}
.cap-card:hover{transform:translateY(-10px) rotateX(5deg) rotateY(-3deg);border-color:rgba(48,152,208,.35);box-shadow:0 28px 60px rgba(28,52,120,.13),0 0 30px rgba(48,152,208,.09)}
.cap-card:hover::before,.cap-card:hover::after{opacity:1}
.cap-icon{width:54px;height:54px;border-radius:15px;display:grid;place-items:center;color:var(--cyan);margin-bottom:22px;
  background:linear-gradient(145deg,rgba(48,152,208,.11),rgba(24,40,120,.05));border:1px solid rgba(48,152,208,.2);
  box-shadow:0 8px 20px rgba(28,52,120,.06),inset 0 1px 0 #fff}
.cap-icon svg{width:30px;height:30px}
.cap-no{position:absolute;top:24px;right:26px;font-family:var(--num);font-size:13px;color:rgba(24,40,120,.24);letter-spacing:.1em}
.cap-card h3{font-size:18px;font-weight:700;margin-bottom:10px;color:var(--ink)}
.cap-card p{font-size:13.5px;color:var(--muted);line-height:1.85;min-height:76px}
.cap-meta{display:flex;gap:8px;margin-top:18px;padding-top:16px;border-top:1px solid rgba(24,40,120,.07)}
.cap-meta span{font-size:11px;color:#2a86c4;border:1px solid rgba(48,152,208,.24);background:rgba(48,152,208,.06);border-radius:999px;padding:3px 10px}

/* ---------- 平台架构（浅色等距堆叠） ---------- */
.platform-inner{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.platform-visual{position:relative;height:420px;display:grid;place-items:center}
.stack-scene{position:relative;width:340px;height:340px;transform-style:preserve-3d;
  transform:rotateX(56deg) rotateZ(-34deg);animation:sceneFloat 8s ease-in-out infinite}
@keyframes sceneFloat{50%{transform:rotateX(56deg) rotateZ(-34deg) translateZ(14px)}}
.stack-card{position:absolute;left:0;top:0;width:300px;height:180px;border-radius:18px;padding:22px;
  background:linear-gradient(140deg,#ffffff,#f1f6fd);
  border:1px solid rgba(48,152,208,.48);box-shadow:0 26px 52px rgba(28,52,120,.2),0 4px 12px rgba(28,52,120,.08),inset 0 1px 0 #fff;
  transform-style:preserve-3d}
.stack-card b{display:block;font-size:20px;margin:8px 0 4px;color:var(--navy)}
.stack-card small{font-size:12px;color:var(--muted)}
.s-tag{font-family:var(--num);font-size:10px;letter-spacing:.18em;color:#2a86c4}
.s1{transform:translate3d(0,0,120px);background:linear-gradient(140deg,#ffffff,#dcebfb)}
.s2{transform:translate3d(34px,24px,60px);background:linear-gradient(140deg,#ffffff,#eef5fd)}
.s3{transform:translate3d(68px,48px,0);background:linear-gradient(140deg,#fbfdff,#f4f8fd)}
.s2 b,.s2 small,.s2 .s-tag,.s3 b,.s3 small,.s3 .s-tag{opacity:.16}
.stack-card::after{content:"";position:absolute;left:18px;right:18px;bottom:14px;height:1px;
  background:linear-gradient(90deg,rgba(48,152,208,.5),transparent)}
.stack-base{position:absolute;left:-24px;top:-20px;width:350px;height:220px;border-radius:24px;
  border:1px dashed rgba(48,152,208,.42);background:rgba(48,152,208,.05);transform:translateZ(-40px)}
.stack-orbit{position:absolute;width:390px;height:390px;border-radius:50%;border:1px solid rgba(48,152,208,.16);
  transform:rotateX(66deg) rotateZ(-20deg);pointer-events:none}
.stack-legend{position:absolute;bottom:4px;left:0;right:0;display:flex;justify-content:center;gap:22px;
  font-size:11.5px;color:var(--muted);letter-spacing:.04em}
.stack-legend span{display:flex;align-items:center;gap:7px;white-space:nowrap}
.stack-legend i{width:9px;height:9px;border-radius:2px;background:linear-gradient(135deg,#4fc3f7,#182878);
  box-shadow:0 0 9px rgba(48,152,208,.3)}
.feature-list{display:grid;gap:16px}
.feature-list li{display:flex;gap:18px;align-items:flex-start;padding:14px 18px;border-radius:14px;
  background:#fff;border:1px solid var(--line);box-shadow:0 8px 22px rgba(28,52,120,.05);
  transition:transform .3s,background .3s,border-color .3s,box-shadow .3s}
.feature-list li:hover{transform:translateX(6px);background:rgba(48,152,208,.045);border-color:rgba(48,152,208,.3);box-shadow:0 14px 30px rgba(28,52,120,.09)}
.fl-num{font-family:var(--num);font-size:13px;color:#2a86c4;padding-top:3px;letter-spacing:.08em}
.feature-list b{font-size:15px;color:var(--ink)}
.feature-list p{font-size:13px;color:var(--muted);margin-top:3px;line-height:1.7}

/* ---------- 数据洞察 ---------- */
.insight-grid{display:grid;grid-template-columns:1fr 1fr;gap:26px;align-items:stretch}
.stat-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-content:start}
.stat-card{position:relative;padding:26px 24px;border-radius:var(--radius);overflow:hidden;
  background:#fff;border:1px solid var(--line);box-shadow:0 14px 36px rgba(28,52,120,.06)}
.stat-card::before{content:"";position:absolute;left:0;top:0;width:3px;height:46px;background:linear-gradient(#3098d0,transparent)}
.stat-card strong{display:block;font-family:var(--num);font-size:38px;line-height:1.2;color:var(--navy);margin-bottom:8px}
.stat-card strong i{font-style:normal;font-size:18px;color:var(--cyan);margin-left:2px}
.stat-card>span{display:block;font-size:14px;color:var(--ink-2)}
.stat-card small{display:block;font-size:11.5px;color:var(--faint);margin-top:4px}
.stat-note{grid-column:1/-1;font-size:11.5px;color:var(--faint);margin-top:2px}
.insight-panel{padding:26px;border-radius:var(--radius);
  background:linear-gradient(160deg,#ffffff,#f4f8fe);border:1px solid rgba(48,152,208,.2);
  box-shadow:var(--shadow);display:flex;flex-direction:column}
.ip-head{display:flex;justify-content:space-between;align-items:center;font-size:15px;font-weight:700;color:var(--ink)}
.ip-badge{font-size:10.5px;letter-spacing:.1em;color:var(--navy);background:rgba(24,40,120,.07);
  border:1px solid rgba(24,40,120,.16);border-radius:999px;padding:4px 11px}
.ip-ring{position:relative;width:190px;height:190px;margin:18px auto 6px}
.ip-ring svg{width:100%;height:100%;transform:rotate(-90deg)}
.ring-bg{fill:none;stroke:rgba(24,40,120,.09);stroke-width:11}
.ring-fg{fill:none;stroke:#3098d0;stroke-width:11;stroke-linecap:round;
  stroke-dasharray:390;stroke-dashoffset:31;filter:drop-shadow(0 0 6px rgba(48,152,208,.35));
  animation:ringIn 1.6s ease forwards}
@keyframes ringIn{from{stroke-dashoffset:390}to{stroke-dashoffset:31}}
.ring-label{position:absolute;inset:0;display:grid;place-content:center;text-align:center}
.ring-label b{font-family:var(--num);font-size:42px;line-height:1;color:var(--navy)}
.ring-label span{font-size:11.5px;color:var(--muted);margin-top:6px}
.ip-list{display:grid;gap:9px;margin-top:auto}
.ip-list li{display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:11px;
  background:#fff;border:1px solid rgba(24,40,120,.08);box-shadow:0 4px 12px rgba(28,52,120,.04)}
.status{width:8px;height:8px;border-radius:50%;flex:none}
.status.warn{background:#eda53c;box-shadow:0 0 9px rgba(237,165,60,.55)}
.status.good{background:#2fb98a;box-shadow:0 0 9px rgba(47,185,138,.5)}
.status.info{background:#3098d0;box-shadow:0 0 9px rgba(48,152,208,.5)}
.ip-list b{display:block;font-size:12.5px;font-weight:700;color:var(--ink)}
.ip-list div span{font-size:11px;color:var(--faint)}
.ip-list em{margin-left:auto;font-style:normal;font-size:10.5px;color:#2a86c4;white-space:nowrap}

/* ---------- 落地流程 ---------- */
.steps{display:grid;grid-template-columns:1fr 40px 1fr 40px 1fr 40px 1fr;align-items:start}
.step{position:relative;padding:30px 24px 26px;border-radius:var(--radius);text-align:center;
  background:#fff;border:1px solid var(--line);box-shadow:0 14px 34px rgba(28,52,120,.06);
  transition:transform .3s,border-color .3s,box-shadow .3s}
.step:hover{transform:translateY(-8px);border-color:rgba(48,152,208,.35);box-shadow:0 24px 48px rgba(28,52,120,.12),0 0 24px rgba(48,152,208,.09)}
.step-num{position:absolute;top:12px;right:16px;font-family:var(--num);font-size:12px;color:rgba(24,40,120,.24);letter-spacing:.1em}
.step-icon{width:62px;height:62px;margin:0 auto 18px;border-radius:20px;display:grid;place-items:center;font-size:26px;color:var(--cyan);
  background:linear-gradient(145deg,rgba(48,152,208,.12),rgba(24,40,120,.05));border:1px solid rgba(48,152,208,.24);
  box-shadow:0 10px 24px rgba(28,52,120,.08),inset 0 1px 0 #fff;transform:rotateX(14deg)}
.step h3{font-size:17px;margin-bottom:8px;color:var(--ink)}
.step p{font-size:12.5px;color:var(--muted);line-height:1.8}
.step-line{height:2px;margin-top:88px;background:linear-gradient(90deg,rgba(48,152,208,.16),rgba(48,152,208,.65),rgba(48,152,208,.16));position:relative}
.step-line::after{content:"";position:absolute;right:-1px;top:-4px;border-left:7px solid var(--cyan);border-top:5px solid transparent;border-bottom:5px solid transparent}

/* ---------- CTA ---------- */
.cta-panel{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:52px;padding:52px;border-radius:28px;overflow:hidden;
  background:linear-gradient(135deg,#ffffff 0%,#f2f7fe 58%,#e9f3fd 100%);
  border:1px solid rgba(48,152,208,.26);box-shadow:var(--shadow-lg)}
.cta-panel::before{content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(48,152,208,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(48,152,208,.045) 1px,transparent 1px);background-size:40px 40px;
  -webkit-mask-image:linear-gradient(120deg,#000,transparent 65%);mask-image:linear-gradient(120deg,#000,transparent 65%)}
.cta-glow{position:absolute;width:420px;height:420px;right:-120px;bottom:-200px;border-radius:50%;
  background:radial-gradient(circle,rgba(48,152,208,.18),transparent 70%);filter:blur(30px);pointer-events:none}
.cta-copy,.cta-form{position:relative;z-index:1}
.cta-copy h2{font-size:clamp(28px,3vw,40px);line-height:1.35;font-weight:800;margin-bottom:16px;color:var(--ink)}
.cta-copy>p{color:var(--muted);font-size:15px;margin-bottom:26px}
.cta-points{display:grid;gap:10px;margin-bottom:30px}
.cta-points li{display:flex;align-items:center;gap:10px;font-size:13.5px;color:var(--ink-2)}
.cta-points span{display:grid;place-items:center;width:19px;height:19px;border-radius:50%;font-size:11px;color:var(--cyan);
  border:1px solid rgba(48,152,208,.4);background:rgba(48,152,208,.08)}
.cta-contact{padding-top:20px;border-top:1px solid rgba(24,40,120,.1)}
.cta-contact span{display:block;font-size:11px;letter-spacing:.14em;color:var(--faint)}
.cta-contact b{display:block;font-family:var(--num);font-size:17px;color:var(--navy);margin-top:4px;letter-spacing:.02em}
.cta-contact small{font-size:11px;color:var(--faint)}
.cta-form{padding:28px;border-radius:20px;background:rgba(255,255,255,.94);border:1px solid rgba(48,152,208,.2);
  box-shadow:0 20px 50px rgba(28,52,120,.11);backdrop-filter:blur(10px)}
.cta-form h3{font-size:18px;margin-bottom:18px;color:var(--ink)}
.cta-form label{display:block;font-size:12px;color:var(--ink-2);margin-bottom:13px}
.cta-form input,.cta-form select,.cta-form textarea{
  display:block;width:100%;margin-top:6px;padding:11px 13px;border-radius:10px;color:var(--ink);
  background:#fbfcff;border:1px solid rgba(24,40,120,.14);outline:none;transition:border-color .25s,box-shadow .25s,background .25s;
  font-size:13.5px}
.cta-form textarea{resize:vertical;min-height:70px}
.cta-form input::placeholder,.cta-form textarea::placeholder{color:#a4b0c6}
.cta-form input:focus,.cta-form select:focus,.cta-form textarea:focus{
  border-color:rgba(48,152,208,.7);box-shadow:0 0 0 3px rgba(48,152,208,.12);background:#fff}
.cta-form select option{background:#fff;color:var(--ink)}
.cta-form .btn{margin-top:6px}
.form-tip{font-size:11px;color:var(--faint);text-align:center;margin-top:12px;min-height:18px}
.form-tip.ok{color:#1e9e77}

/* ---------- 页脚 ---------- */
.site-footer{border-top:1px solid var(--line);background:rgba(255,255,255,.82);padding:52px 0 22px}
.footer-inner{display:flex;justify-content:space-between;gap:40px;flex-wrap:wrap}
.footer-brand .brand-mark{width:58px;height:58px}
.footer-brand .brand-mark img{width:50px;height:50px}
.footer-brand p{font-size:12.5px;color:var(--muted);margin-top:14px}
.footer-nav{display:flex;gap:70px}
.footer-nav b{display:block;font-size:13px;margin-bottom:12px;color:var(--navy)}
.footer-nav a{display:block;font-size:12.5px;color:var(--muted);padding:4px 0;transition:color .25s}
.footer-nav a:hover{color:var(--cyan)}
.footer-bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:38px;padding-top:20px;border-top:1px solid rgba(24,40,120,.08);font-size:11.5px;color:var(--faint)}

/* ---------- 入场动画 ---------- */
.js .reveal{opacity:0;transform:translateY(26px);transition:opacity .7s cubic-bezier(.2,.8,.2,1),transform .7s cubic-bezier(.2,.8,.2,1);transition-delay:var(--d,0s)}
.js .reveal.in{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .hero-inner{grid-template-columns:1fr;gap:10px;min-height:auto;padding-bottom:30px}
  .hero-copy{max-width:760px}
  .hero-visual{height:540px;max-width:600px;width:100%;margin-inline:auto}
  .platform-inner{gap:36px}
  .insight-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:repeat(4,1fr)}
  .stat-note{grid-column:1/-1}
  .cap-grid{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:860px){
  .nav{position:absolute;top:78px;left:0;right:0;display:none;flex-direction:column;align-items:stretch;gap:4px;
    padding:16px 24px 24px;background:rgba(255,255,255,.98);border-bottom:1px solid var(--line);
    backdrop-filter:blur(18px);box-shadow:0 24px 50px rgba(28,52,120,.12)}
  .nav.open{display:flex}
  .nav-link{padding:12px 6px;border-bottom:1px solid rgba(24,40,120,.07)}
  .nav-cta{margin-top:12px;align-self:flex-start}
  .menu-toggle{display:block}
  .section{padding:80px 0}
  .section-head{margin-bottom:40px}
  .platform-inner{grid-template-columns:1fr}
  .platform-visual{height:360px;order:2}
  .stack-scene{transform:rotateX(56deg) rotateZ(-34deg) scale(.85)}
  .cta-panel{grid-template-columns:1fr;padding:36px 28px;gap:30px}
  .steps{grid-template-columns:1fr 1fr;gap:16px}
  .step-line{display:none}
  .stat-grid{grid-template-columns:1fr 1fr}
}
@media (max-width:600px){
  .container{width:min(100% - 32px,1200px)}
  html{scroll-padding-top:72px}
  .header-inner{height:68px}
  .nav{top:68px}
  .brand-text strong{font-size:17px}
  .brand-mark{width:44px;height:44px}
  .brand-mark img{width:39px;height:39px}
  .hero{padding-top:44px}
  .hero-title{font-size:34px}
  .hero-sub{font-size:14.5px}
  .hero-actions .btn{flex:1;padding:13px 18px}
  .hero-visual{height:440px}
  .visual-stage{max-width:330px;height:410px;--rx:5deg;--ry:-6deg}
  .dash-panel{transform:rotateX(var(--rx)) rotateY(var(--ry))}
  .kpi strong{font-size:15px}
  .kpi{padding:7px 8px}
  .kpi span{font-size:9.5px}
  .line-chart{height:80px}
  .bars{height:44px}
  .dash-logo{width:18px;height:18px}
  .float-card{display:none}
  .cube{display:none}
  .orbit-1{width:300px;height:300px}
  .orbit-2{display:none}
  .visual-caption{font-size:10px}
  .cap-grid{grid-template-columns:1fr}
  .cap-card p{min-height:0}
  .steps{grid-template-columns:1fr}
  .cta-panel{padding:28px 20px}
  .cta-form{padding:20px}
  .footer-nav{gap:40px}
  .footer-bottom{flex-direction:column;gap:6px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .js .reveal{opacity:1;transform:none}
}