@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@400;500;700;900&display=swap');

:root{
  --rose:#e8537f;--rose-d:#cf3a68;--rose-l:#f48fb0;--rose-tint:#fdeef3;--rose-tint2:#fef6f9;
  --ink:#2a1c22;--ink2:#4a3a40;--gray:#8a7882;--gray-l:#b3a4ac;
  --line:#f5e1e9;--bg:#fff;--green:#3cb371;
  --shadow:0 20px 55px -22px rgba(180,40,90,.28);--shadow-sm:0 10px 28px -14px rgba(180,40,90,.2);
  --radius:16px;--maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:"Noto Sans SC",-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px}
.rose{color:var(--rose)}.green{color:var(--green)}
small{font-size:.62em;font-weight:600;color:inherit}

/* header */
.hdr{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);transition:box-shadow .3s,border-color .3s;border-bottom:1px solid transparent}
.hdr.scrolled{box-shadow:0 6px 22px -16px rgba(0,0,0,.2);border-bottom-color:var(--line)}
.hdr-inner{display:flex;align-items:center;gap:40px;height:66px}
.brand{display:flex;align-items:center;gap:10px;font-weight:800;font-size:20px}
.brand-logo{width:32px;height:32px}
.hdr-nav{display:flex;gap:28px;margin-left:6px}
.hdr-nav a{color:var(--ink2);font-size:15px;font-weight:500;position:relative;padding:4px 0}
.hdr-nav a::after{content:"";position:absolute;left:0;bottom:-2px;width:0;height:2px;background:var(--rose);transition:width .25s}
.hdr-nav a:hover{color:var(--rose)}.hdr-nav a:hover::after{width:100%}
.hdr-login{margin-left:auto;font-size:15px;font-weight:600;color:var(--ink2)}
.hdr-login:hover{color:var(--rose)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;font-weight:700;cursor:pointer;border:none;transition:transform .15s,box-shadow .25s,background .25s}
.btn-primary{background:linear-gradient(135deg,#ee6a96,#d83a68);color:#fff;padding:13px 34px;border-radius:30px;font-size:16px;box-shadow:0 12px 26px -12px rgba(216,58,104,.6)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 16px 32px -12px rgba(216,58,104,.7)}
.btn-primary.lg{padding:16px 46px;font-size:17px}
.btn-ghost{background:#fff;color:var(--rose-d);padding:13px 34px;border-radius:30px;font-size:16px;border:1.5px solid var(--rose-l)}
.btn-ghost:hover{background:var(--rose-tint);transform:translateY(-2px)}

/* hero */
.hero{position:relative;overflow:hidden;padding:54px 0 64px}
.hero-bg{position:absolute;inset:0;z-index:-2;background:url("assets/city-scene.svg") center/cover no-repeat}
.hero-overlay{position:absolute;inset:0;z-index:-1;background:linear-gradient(100deg,rgba(254,246,249,.97) 0%,rgba(254,246,249,.78) 36%,rgba(254,246,249,.2) 58%,rgba(254,246,249,0) 100%)}
.hero-grid{display:grid;grid-template-columns:0.82fr 1.18fr;gap:38px;align-items:center}
.hero-title{font-size:46px;font-weight:900;letter-spacing:1px;line-height:1.18}
.hero-tagline{margin-top:18px;font-size:16px;font-weight:600;color:var(--ink2)}
.hero-actions{display:flex;gap:16px;margin-top:30px}
.hero-pills{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:14px 20px;margin-top:36px;max-width:420px}
.hero-pills li{display:flex;align-items:center;gap:10px}
.pill-ic{width:38px;height:38px;border-radius:11px;background:var(--rose-tint);display:grid;place-items:center;font-size:18px;flex-shrink:0}
.hero-pills b{font-size:14px;display:block}
.hero-pills em{font-size:11.5px;color:var(--gray);font-style:normal}

/* hero visual */
.hero-vis{position:relative}
.hero-dash{background:rgba(255,255,255,.92);border:1px solid var(--line);border-radius:16px;box-shadow:0 30px 70px -26px rgba(180,40,90,.4);backdrop-filter:blur(6px);overflow:hidden}
.hd-top{display:flex;justify-content:space-between;align-items:center;padding:9px 14px;font-size:11px;color:var(--gray);border-bottom:1px solid var(--line)}
.hd-brand{display:flex;align-items:center;gap:6px;font-weight:700;color:var(--ink2)}
.hd-body{display:flex}
.hd-side{width:42px;flex-shrink:0;border-right:1px solid var(--line);padding:10px 0;display:flex;flex-direction:column;gap:12px;align-items:center;font-size:14px}
.hd-main{flex:1;padding:11px;display:flex;flex-direction:column;gap:8px;min-width:0}
.hd-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}
.hd-kpi{background:var(--rose-tint2);border:1px solid var(--line);border-radius:9px;padding:8px 9px}
.hd-kpi em{font-size:9px;color:var(--gray);font-style:normal}
.hd-kpi b{display:block;font-size:14px;font-weight:800;margin-top:2px}
.hd-cols{display:flex;gap:8px}
.hd-card{background:#fff;border:1px solid var(--line);border-radius:9px;padding:9px;min-width:0}
.hd-card.map{flex:1.4}.hd-card.alarms{flex:1}
.hd-ct{font-size:9.5px;color:var(--gray);font-weight:600;display:block;margin-bottom:6px}
.hd-map{position:relative;height:92px;background:radial-gradient(circle at 50% 50%,#fde6ee,#f7d0de);border-radius:7px}
.hd-map i{position:absolute;width:8px;height:8px;background:var(--rose);border-radius:50% 50% 50% 0;transform:rotate(-45deg);box-shadow:0 0 0 3px rgba(232,83,127,.18)}
.hd-map i.big{width:13px;height:13px;background:var(--rose-d);animation:pulse 1.8s infinite}
.hd-map i.big em{position:absolute;left:14px;top:-2px;transform:rotate(45deg);background:#fff;border-radius:5px;padding:1px 5px;font-size:8px;font-style:normal;white-space:nowrap;color:var(--rose-d);box-shadow:var(--shadow-sm)}
@keyframes pulse{0%,100%{box-shadow:0 0 0 3px rgba(232,83,127,.25)}50%{box-shadow:0 0 0 7px rgba(232,83,127,.05)}}
.alarms p{font-size:9.5px;display:flex;align-items:center;gap:5px;color:var(--ink2);margin:5px 0}
.alarms small{margin-left:auto;color:var(--gray-l)}
.a-r,.a-o,.a-g{width:6px;height:6px;border-radius:50%;flex-shrink:0}
.a-r{background:#e2574c}.a-o{background:#e8923c}.a-g{background:#3cb371}
.hd-camrow{display:grid;grid-template-columns:1fr 1fr 1fr;gap:6px}
.hd-camrow i{height:42px;border-radius:6px;background:linear-gradient(135deg,#3a2a30,#5a3a44);background-image:repeating-linear-gradient(45deg,rgba(255,255,255,.03) 0 5px,transparent 5px 10px)}
.hero-phone{position:absolute;right:-6px;bottom:-26px;width:128px;height:248px;background:#1d1418;border-radius:24px;padding:8px;box-shadow:0 30px 60px -20px rgba(120,30,60,.5);border:2px solid #2a1c22}
.ph-notch{width:42px;height:5px;background:#3a2a30;border-radius:3px;margin:3px auto 6px}
.ph-screen{background:linear-gradient(170deg,#fde6ee,#fff);border-radius:16px;height:calc(100% - 14px);display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:12px;gap:5px}
.ph-ic{width:42px;height:42px;border-radius:12px;background:var(--rose-tint);display:grid;place-items:center;font-size:22px}
.ph-title{font-size:15px;color:var(--rose-d);font-weight:800;margin-top:4px}
.ph-sub{font-size:11px;color:var(--ink2)}.ph-time{font-size:10px;color:var(--gray)}
.ph-btn{margin-top:8px;background:linear-gradient(135deg,#ee6a96,#d83a68);color:#fff;font-size:11px;font-weight:700;padding:7px 16px;border-radius:16px}

/* sections */
.section{padding:60px 0}
.section-tint{background:linear-gradient(180deg,var(--rose-tint2),#fff)}
.sec-title{text-align:center;font-size:29px;font-weight:800;margin-bottom:40px}
.sec-title::after{content:"";display:block;width:42px;height:3px;border-radius:2px;background:var(--rose);margin:14px auto 0}

/* pain */
.pain-grid,.serv-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.pain,.serv{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px 22px;text-align:center;transition:transform .25s,box-shadow .25s,border-color .25s}
.pain:hover,.serv:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--rose-l)}
.pain-ic,.serv-ic{width:56px;height:56px;border-radius:16px;background:var(--rose-tint);display:grid;place-items:center;font-size:26px;margin:0 auto 16px}
.pain h3,.serv h3{font-size:16.5px;font-weight:700;margin-bottom:8px}
.pain p,.serv p{font-size:13px;color:var(--gray);line-height:1.8}

/* capability */
.cap-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.cap{display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;transition:transform .25s,box-shadow .25s,border-color .25s}
.cap:hover{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--rose-l)}
.cap-ic{width:50px;height:50px;border-radius:13px;background:linear-gradient(135deg,#fbe4ec,#f7d0de);display:grid;place-items:center;font-size:24px;flex-shrink:0}
.cap h3{font-size:17px;font-weight:700;margin-bottom:8px}
.cap p{font-size:13.5px;color:var(--gray);line-height:1.8}

/* devices */
.dev-flow{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;position:relative}
.dev-flow::before{content:"";position:absolute;left:8%;right:8%;top:42px;height:2px;background:repeating-linear-gradient(90deg,var(--rose-l) 0 8px,transparent 8px 16px);z-index:0}
.dev{flex:1;min-width:120px;text-align:center;position:relative;z-index:1}
.dev-ic{width:84px;height:84px;border-radius:22px;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow-sm);display:grid;place-items:center;font-size:34px;margin:0 auto 12px;transition:transform .25s,box-shadow .25s}
.dev:hover .dev-ic{transform:translateY(-5px);box-shadow:var(--shadow);border-color:var(--rose-l)}
.dev span:last-child{font-size:14px;font-weight:600;color:var(--ink2)}

/* board */
.board{background:#fff;border:1px solid var(--line);border-radius:20px;padding:28px;box-shadow:var(--shadow-sm)}
.board-kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:20px}
.bk{display:flex;flex-direction:column;background:var(--rose-tint2);border:1px solid var(--line);border-radius:14px;padding:16px 18px;position:relative}
.bk-ic{position:absolute;right:14px;top:14px;font-size:20px;opacity:.8}
.bk em{font-size:12.5px;color:var(--gray);font-style:normal}
.bk b{font-size:25px;font-weight:800;margin-top:6px}
.board-grid{display:grid;grid-template-columns:1.1fr 1.1fr 1fr;gap:18px}
.bcard{background:var(--rose-tint2);border:1px solid var(--line);border-radius:14px;padding:16px}
.bcard-h{font-size:13.5px;font-weight:700;margin-bottom:12px}
.board-map{height:172px;border-radius:10px;background:linear-gradient(135deg,#fde6ee,#f7d0de);position:relative;overflow:hidden}
.board-map i{position:absolute;width:14px;height:14px;background:var(--rose);border-radius:50% 50% 50% 0;transform:rotate(-45deg);box-shadow:0 0 0 5px rgba(232,83,127,.16)}
.board-map i.alarm{background:var(--rose-d);animation:pulse 1.8s infinite}
.board-map i.ok{background:#5fb6e8}
.map-stats{display:flex;justify-content:space-around;margin-top:12px;text-align:center;font-size:11px;color:var(--gray)}
.map-stats b{display:block;font-size:18px;font-weight:800;color:var(--ink)}
.board-trend{width:100%;height:96px}
.board-donut-row{display:flex;align-items:center;gap:14px}
.legend-mini{list-style:none;font-size:11.5px;color:var(--ink2);display:flex;flex-direction:column;gap:5px}
.legend-mini li{display:flex;align-items:center;gap:6px}
.legend-mini i{width:8px;height:8px;border-radius:2px;display:inline-block}
.legend-mini b{margin-left:auto;padding-left:12px}
.board-table{width:100%;border-collapse:collapse;font-size:12px}
.board-table th{text-align:left;color:var(--gray);font-weight:600;font-size:11px;padding:6px 6px;border-bottom:1px solid var(--line)}
.board-table td{padding:7px 6px;border-bottom:1px solid var(--line);color:var(--ink2)}
.tag{font-size:10px;padding:2px 8px;border-radius:12px;font-weight:600;white-space:nowrap}
.tag-green{background:#e3f5e9;color:#2a9d5a}.tag-red{background:#fbe5e2;color:#d2483b}
.more{color:var(--rose);font-size:12px;font-weight:600;display:inline-block;margin-top:12px}

/* scenes */
.scene-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.scene{background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform .25s,box-shadow .25s}
.scene:hover{transform:translateY(-5px);box-shadow:var(--shadow)}
.scene img{width:100%;height:120px;object-fit:cover}
.scene-b{padding:18px}
.scene-ic{font-size:22px}
.scene-b h3{font-size:16px;font-weight:700;margin:6px 0 8px}
.scene-b p{font-size:12.5px;color:var(--gray);line-height:1.7}

/* cta */
.cta{position:relative;overflow:hidden;padding:62px 0;text-align:center}
.cta-bg{position:absolute;inset:0;z-index:-1;background:url("assets/city-scene.svg") center/cover no-repeat}
.cta-bg::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(254,246,249,.86),rgba(254,246,249,.92))}
.cta h2{font-size:29px;font-weight:800}
.cta p{margin:14px 0 28px;font-size:16px;color:var(--ink2)}

/* footer */
.ftr{background:#2a1c22;color:#b3a4ac;padding:22px 0;text-align:center;font-size:13px}

/* reveal */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s,transform .6s}
.reveal.in{opacity:1;transform:none}

@media(max-width:980px){
  .hero-grid{grid-template-columns:1fr;gap:40px}.hero-title{font-size:38px}
  .hero-phone{display:none}
  .pain-grid,.serv-grid,.cap-grid{grid-template-columns:1fr 1fr}
  .board-kpis{grid-template-columns:1fr 1fr}.board-grid{grid-template-columns:1fr}
  .scene-grid{grid-template-columns:1fr 1fr}.hdr-nav{display:none}
  .dev-flow::before{display:none}
}
@media(max-width:560px){
  .container{padding:0 18px}.hero-title{font-size:30px}
  .pain-grid,.serv-grid,.cap-grid,.scene-grid,.board-kpis{grid-template-columns:1fr}
  .hero-pills{grid-template-columns:1fr}
}