:root {
  --bg: #07100d;
  --surface: #0d1713;
  --surface-2: #12201a;
  --surface-3: #17271f;
  --line: rgba(255,255,255,.09);
  --text: #f7faf8;
  --muted: #93a39b;
  --brand: #f5b942;
  --brand-2: #ff7b30;
  --green: #49d18d;
  --danger: #ff6b6b;
  --shadow: 0 20px 70px rgba(0,0,0,.32);
  --radius: 20px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 85% 5%, rgba(245,185,66,.13), transparent 28%),
    radial-gradient(circle at 8% 35%, rgba(73,209,141,.08), transparent 24%),
    var(--bg);
  font: 15px/1.6 Inter, "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(1180px, calc(100% - 40px)); margin: 0 auto; }
.header {
  position: sticky; top: 0; z-index: 30;
  height: 76px; border-bottom: 1px solid var(--line);
  background: rgba(7,16,13,.82); backdrop-filter: blur(18px);
}
.header-inner { height: 100%; display: flex; align-items: center; gap: 36px; }
.brand { display:flex; align-items:center; gap:11px; font-weight:900; font-size:23px; letter-spacing:1px; white-space:nowrap; }
.brand-mark { width:42px; height:42px; border-radius:14px; display:grid; place-items:center; color:#1b1403; background:linear-gradient(135deg,var(--brand),var(--brand-2)); box-shadow:0 10px 30px rgba(245,185,66,.25); font-size:23px; }
.nav { display:flex; align-items:center; gap:7px; flex:1; }
.nav a { color:var(--muted); padding:10px 14px; border-radius:10px; font-weight:650; }
.nav a:hover,.nav a.active { color:var(--text); background:rgba(255,255,255,.055); }
.header-actions { display:flex; gap:10px; align-items:center; }
.btn { border:0; border-radius:12px; padding:11px 18px; font-weight:750; transition:.2s ease; display:inline-flex; align-items:center; justify-content:center; gap:8px; }
.btn:hover { transform:translateY(-1px); }
.btn-primary { color:#171104; background:linear-gradient(135deg,var(--brand),var(--brand-2)); box-shadow:0 10px 30px rgba(245,185,66,.18); }
.btn-secondary { color:var(--text); background:rgba(255,255,255,.07); border:1px solid var(--line); }
.btn-ghost { color:var(--muted); background:transparent; }
.btn-block { width:100%; }
.badge { display:inline-flex; align-items:center; gap:7px; border:1px solid rgba(245,185,66,.25); background:rgba(245,185,66,.08); color:#ffd980; padding:7px 12px; border-radius:999px; font-size:13px; font-weight:700; }
.badge::before { content:""; width:7px; height:7px; border-radius:50%; background:var(--green); box-shadow:0 0 0 5px rgba(73,209,141,.1); }
.hero { padding:90px 0 70px; overflow:hidden; }
.hero-grid { display:grid; grid-template-columns:1.08fr .92fr; align-items:center; gap:64px; }
.hero h1 { font-size:clamp(48px,6vw,78px); line-height:1.08; letter-spacing:-3px; margin:24px 0 22px; }
.gradient-text { background:linear-gradient(95deg,#fff 10%,#ffd36d 58%,#ff8b45); -webkit-background-clip:text; color:transparent; }
.hero p { color:var(--muted); font-size:18px; max-width:620px; margin:0 0 30px; }
.hero-actions { display:flex; gap:12px; flex-wrap:wrap; }
.hero-note { display:flex; gap:24px; margin-top:28px; color:var(--muted); font-size:13px; }
.hero-note span::before { content:"✓"; color:var(--green); font-weight:900; margin-right:6px; }
.globe-card { position:relative; min-height:470px; display:grid; place-items:center; }
.globe { position:relative; width:370px; height:370px; border-radius:50%; border:1px solid rgba(245,185,66,.24); background:radial-gradient(circle at 38% 32%,rgba(245,185,66,.18),rgba(11,25,19,.55) 48%,rgba(5,10,8,.8)); box-shadow:inset 0 0 80px rgba(245,185,66,.08), 0 40px 120px rgba(0,0,0,.35); }
.globe::before,.globe::after { content:""; position:absolute; inset:13%; border:1px solid rgba(245,185,66,.16); border-radius:50%; transform:rotate(62deg); }
.globe::after { transform:rotate(-18deg) scaleX(.45); }
.orbit { position:absolute; inset:-26px; border:1px dashed rgba(245,185,66,.21); border-radius:50%; animation:spin 22s linear infinite; }
@keyframes spin { to { transform:rotate(360deg); } }
.node { position:absolute; width:12px; height:12px; border-radius:50%; background:var(--brand); box-shadow:0 0 0 8px rgba(245,185,66,.11),0 0 28px var(--brand); }
.n1{top:20%;left:22%}.n2{top:35%;right:12%}.n3{bottom:22%;left:30%}.n4{bottom:13%;right:28%}
.float-card { position:absolute; padding:14px 17px; border:1px solid var(--line); border-radius:15px; background:rgba(18,32,26,.9); backdrop-filter:blur(12px); box-shadow:var(--shadow); }
.float-card strong { display:block; font-size:18px; }.float-card small { color:var(--muted); }
.f1{top:45px;right:0}.f2{bottom:50px;left:-10px}.f3{bottom:8px;right:25px}
.stats { display:grid; grid-template-columns:repeat(4,1fr); margin:0 auto 90px; background:rgba(255,255,255,.035); border:1px solid var(--line); border-radius:var(--radius); overflow:hidden; }
.stat { padding:26px 30px; border-right:1px solid var(--line); }.stat:last-child{border:0}.stat strong{display:block;font-size:27px}.stat span{color:var(--muted);font-size:13px}
.section { padding:80px 0; }
.section-head { text-align:center; max-width:720px; margin:0 auto 42px; }
.section-head .eyebrow { color:var(--brand); text-transform:uppercase; letter-spacing:2px; font-weight:800; font-size:12px; }
.section-head h2 { font-size:40px; margin:9px 0 12px; letter-spacing:-1.5px; }
.section-head p { margin:0; color:var(--muted); }
.grid-3 { display:grid; grid-template-columns:repeat(3,1fr); gap:20px; }
.feature-card,.plan-card,.device-card,.panel,.auth-card { background:linear-gradient(145deg,rgba(20,35,28,.92),rgba(10,20,16,.92)); border:1px solid var(--line); border-radius:var(--radius); box-shadow:0 15px 55px rgba(0,0,0,.16); }
.feature-card { padding:28px; }.feature-icon { width:48px;height:48px;border-radius:14px;background:rgba(245,185,66,.12);display:grid;place-items:center;color:var(--brand);font-size:23px;margin-bottom:20px}.feature-card h3{margin:0 0 8px}.feature-card p{margin:0;color:var(--muted)}
.plans { align-items:stretch; }.plan-card{padding:30px;position:relative;display:flex;flex-direction:column}.plan-card.popular{border-color:rgba(245,185,66,.55);transform:translateY(-8px);box-shadow:0 25px 80px rgba(245,185,66,.1)}.popular-label{position:absolute;top:-13px;right:22px;padding:5px 12px;border-radius:999px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#1b1303;font-size:12px;font-weight:900}.plan-name{font-weight:800;font-size:18px}.price{font-size:44px;font-weight:900;margin:10px 0 0}.price small{font-size:14px;color:var(--muted);font-weight:500}.plan-desc{color:var(--muted);min-height:48px}.plan-list{list-style:none;padding:0;margin:20px 0 26px;flex:1}.plan-list li{padding:8px 0;color:#dbe4df}.plan-list li::before{content:"✓";color:var(--green);margin-right:9px;font-weight:900}
.devices { display:grid;grid-template-columns:repeat(4,1fr);gap:16px }.device-card{padding:25px;text-align:center}.device-icon{font-size:35px}.device-card h3{margin:10px 0 4px}.device-card p{color:var(--muted);font-size:13px;margin:0 0 16px}
.cta { margin:70px auto; padding:50px; border-radius:28px; position:relative; overflow:hidden; background:linear-gradient(120deg,#2e250c,#173623); border:1px solid rgba(245,185,66,.25); display:flex;justify-content:space-between;align-items:center;gap:30px}.cta::after{content:"牛";position:absolute;right:12%;top:-72px;font-size:250px;font-weight:900;color:rgba(255,255,255,.035)}.cta h2{font-size:34px;margin:0 0 8px}.cta p{color:#c6d1ca;margin:0}
.footer { border-top:1px solid var(--line);padding:55px 0 30px;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:2fr repeat(3,1fr);gap:40px}.footer h4{color:var(--text);margin:0 0 13px}.footer a{display:block;padding:4px 0}.copyright{margin-top:40px;padding-top:22px;border-top:1px solid var(--line);display:flex;justify-content:space-between;font-size:13px}
/* auth */
.auth-page { min-height:calc(100vh - 76px);display:grid;place-items:center;padding:50px 20px }.auth-card{width:min(460px,100%);padding:34px}.auth-card h1{margin:10px 0 5px;font-size:30px}.auth-card>p{color:var(--muted);margin:0 0 24px}.form-group{margin:15px 0}.form-group label{display:block;margin-bottom:7px;font-weight:700;font-size:13px}.input{width:100%;border:1px solid var(--line);background:rgba(255,255,255,.045);color:var(--text);padding:13px 14px;border-radius:11px;outline:none}.input:focus{border-color:rgba(245,185,66,.6);box-shadow:0 0 0 3px rgba(245,185,66,.08)}.form-row{display:flex;gap:12px}.form-row .form-group{flex:1}.form-hint{color:var(--muted);font-size:12px}.auth-foot{text-align:center;color:var(--muted);margin-top:20px}.auth-foot a{color:var(--brand)}
/* dashboard */
.app-shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh;background:#08110e}.sidebar{position:sticky;top:0;height:100vh;border-right:1px solid var(--line);padding:22px 16px;background:#0a1511}.sidebar .brand{padding:0 10px 24px}.side-nav{display:flex;flex-direction:column;gap:5px}.side-nav a{display:flex;gap:11px;align-items:center;padding:11px 13px;border-radius:11px;color:var(--muted);font-weight:650}.side-nav a:hover,.side-nav a.active{background:rgba(245,185,66,.1);color:#ffdc88}.side-divider{height:1px;background:var(--line);margin:14px 8px}.side-user{position:absolute;bottom:18px;left:16px;right:16px;border-top:1px solid var(--line);padding-top:17px;display:flex;align-items:center;gap:10px}.avatar{width:38px;height:38px;border-radius:12px;background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#161005;display:grid;place-items:center;font-weight:900}.side-user strong,.side-user small{display:block;max-width:145px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.side-user small{color:var(--muted);font-size:11px}.main{min-width:0}.topbar{height:72px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 32px;background:rgba(8,17,14,.82);backdrop-filter:blur(15px);position:sticky;top:0;z-index:10}.topbar h2{font-size:18px;margin:0}.top-actions{display:flex;align-items:center;gap:12px}.content{padding:30px 32px 55px;max-width:1450px}.welcome{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:25px}.welcome h1{font-size:30px;margin:0 0 5px}.welcome p{margin:0;color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}.metric{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:17px}.metric-top{display:flex;justify-content:space-between;color:var(--muted);font-size:13px}.metric-icon{width:34px;height:34px;border-radius:10px;background:rgba(245,185,66,.1);display:grid;place-items:center;color:var(--brand)}.metric-value{font-size:27px;font-weight:900;margin-top:12px}.metric-foot{font-size:12px;color:var(--green);margin-top:3px}.dash-grid{display:grid;grid-template-columns:1.35fr .65fr;gap:18px;margin-top:18px}.panel{padding:23px}.panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.panel-head h3{margin:0;font-size:17px}.panel-head a{color:var(--brand);font-size:13px}.traffic-ring{width:170px;height:170px;margin:13px auto;border-radius:50%;background:conic-gradient(var(--brand) 0 31%,rgba(255,255,255,.07) 31%);display:grid;place-items:center}.traffic-ring::before{content:"";position:absolute}.ring-inner{width:127px;height:127px;border-radius:50%;background:var(--surface);display:grid;place-items:center;text-align:center}.ring-inner strong{font-size:23px;display:block}.ring-inner small{color:var(--muted)}.quick-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.quick{padding:16px;border-radius:13px;background:rgba(255,255,255,.04);border:1px solid var(--line)}.quick:hover{border-color:rgba(245,185,66,.3)}.quick strong{display:block}.quick small{color:var(--muted)}
.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:14px 12px;border-bottom:1px solid var(--line);white-space:nowrap}.table th{color:var(--muted);font-size:12px}.status{display:inline-flex;padding:4px 9px;border-radius:999px;font-size:11px;font-weight:800}.status.ok{background:rgba(73,209,141,.12);color:#70e5aa}.status.wait{background:rgba(245,185,66,.12);color:#ffd270}.status.off{background:rgba(255,107,107,.12);color:#ff9292}
.sub-box{border:1px solid var(--line);background:rgba(255,255,255,.035);border-radius:15px;padding:17px}.sub-label{color:var(--muted);font-size:12px}.sub-value{display:flex;align-items:center;gap:10px;margin-top:8px}.sub-value code{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#d8e3dc}.copy-btn{border:0;background:rgba(245,185,66,.13);color:var(--brand);padding:8px 12px;border-radius:9px}.client-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:15px}.client{padding:18px;border:1px solid var(--line);border-radius:14px;background:rgba(255,255,255,.03)}.client strong{display:block}.client small{color:var(--muted)}
.notice{padding:15px 17px;border-radius:13px;background:rgba(245,185,66,.08);border:1px solid rgba(245,185,66,.18);color:#f7d98f;margin-bottom:18px}.empty{text-align:center;padding:50px 20px;color:var(--muted)}.empty-icon{font-size:45px;opacity:.7}.toast{position:fixed;right:25px;bottom:25px;z-index:100;padding:13px 18px;background:#f7f9f8;color:#152019;border-radius:12px;box-shadow:var(--shadow);font-weight:750;transform:translateY(100px);opacity:0;transition:.25s}.toast.show{transform:none;opacity:1}
.mobile-toggle{display:none}
@media(max-width:980px){.nav{display:none}.hero-grid{grid-template-columns:1fr}.globe-card{display:none}.grid-3{grid-template-columns:1fr}.devices{grid-template-columns:repeat(2,1fr)}.stats{grid-template-columns:repeat(2,1fr)}.stat:nth-child(2){border-right:0}.metric-grid{grid-template-columns:repeat(2,1fr)}.dash-grid{grid-template-columns:1fr}.app-shell{grid-template-columns:78px 1fr}.sidebar{padding:20px 10px}.sidebar .brand span:last-child,.side-nav a span:last-child,.side-user>div:last-child{display:none}.sidebar .brand{padding-left:8px}.side-nav a{justify-content:center;font-size:20px}.side-user{justify-content:center}.content{padding:25px 20px}.topbar{padding:0 20px}.footer-grid{grid-template-columns:1fr 1fr}}
@media(max-width:620px){.container{width:min(100% - 28px,1180px)}.header-actions .btn-secondary{display:none}.hero{padding-top:55px}.hero h1{font-size:45px;letter-spacing:-2px}.hero-note{display:block}.hero-note span{display:block;margin:5px 0}.stats{grid-template-columns:1fr 1fr}.stat{padding:20px 17px}.section{padding:55px 0}.section-head h2{font-size:31px}.devices{grid-template-columns:1fr}.cta{padding:32px;display:block}.cta .btn{margin-top:20px}.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}.copyright{display:block}.app-shell{display:block}.sidebar{position:fixed;left:-260px;width:240px;z-index:50;transition:.25s}.sidebar.open{left:0}.sidebar .brand span:last-child,.side-nav a span:last-child,.side-user>div:last-child{display:block}.side-nav a{justify-content:flex-start;font-size:15px}.mobile-toggle{display:inline-flex}.metric-grid{grid-template-columns:1fr}.client-grid{grid-template-columns:1fr}.welcome{align-items:flex-start;gap:15px}.welcome .btn{display:none}.content{padding:22px 14px}.topbar{padding:0 14px}.top-actions .badge{display:none}.form-row{display:block}}

/* admin console */
.admin-login-page{min-height:100vh;display:grid;place-items:center;padding:32px 18px;background:radial-gradient(circle at 50% 8%,rgba(245,185,66,.16),transparent 34%),linear-gradient(145deg,#07100d,#0b1712)}
.admin-login-card{width:min(470px,100%);margin:0;border:1px solid rgba(245,185,66,.2);box-shadow:0 28px 90px rgba(0,0,0,.42)}
.admin-login-brand{display:flex;justify-content:center;margin-bottom:22px}.admin-login-brand .brand{font-size:25px}.admin-login-card>.badge{display:table;margin:0 auto 15px}.admin-login-card h1{text-align:center;margin:0 0 7px;font-size:30px}.admin-login-card>p{text-align:center;color:var(--muted);margin:0 0 24px}.admin-demo-note{display:flex;flex-direction:column;gap:3px;margin-top:18px;padding:13px 15px;border-radius:12px;background:rgba(73,209,141,.08);border:1px solid rgba(73,209,141,.16);color:#b7ebcf}.admin-demo-note span{font-size:12px;color:var(--muted)}
.admin-shell{grid-template-columns:270px minmax(0,1fr);background:linear-gradient(145deg,#07100d,#0a1410)}.admin-sidebar{width:270px;background:linear-gradient(180deg,#0c1712,#08110e)}.admin-sidebar .brand{padding-bottom:14px}.admin-role{margin:0 8px 16px;padding:10px 12px;border-radius:11px;background:rgba(245,185,66,.08);border:1px solid rgba(245,185,66,.15)}.admin-role span,.admin-role small{display:block}.admin-role span{color:var(--brand);font-size:10px;font-weight:900;letter-spacing:1.5px}.admin-role small{color:var(--muted);font-size:11px;margin-top:1px}.admin-content{width:100%;max-width:1600px}.top-subtitle{display:block;color:var(--muted);font-size:11px;margin-top:1px}.action-row,.content-actions,.admin-toolbar,.table-actions{display:flex;align-items:center;gap:9px}.admin-toolbar{margin-bottom:18px}.admin-toolbar>.input:first-child{flex:1}.compact-input{width:auto;min-width:145px}.search-box{flex:1;min-width:220px}.table-actions{gap:6px}.table-actions button,.danger-link{border:0;padding:6px 9px;border-radius:8px;background:rgba(255,255,255,.06);color:#d8e3dc;white-space:nowrap}.table-actions button:hover{background:rgba(245,185,66,.13);color:var(--brand)}.danger-link{color:#ff9292;background:rgba(255,107,107,.09)}.table-footer{display:flex;justify-content:space-between;align-items:center;color:var(--muted);font-size:12px;padding-top:16px}.admin-chart{height:245px;display:flex;align-items:flex-end;gap:12px;padding:20px 4px 0}.chart-col{height:100%;flex:1;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;gap:9px}.chart-col span{width:min(38px,80%);min-height:8px;border-radius:9px 9px 3px 3px;background:linear-gradient(180deg,var(--brand),var(--brand-2));box-shadow:0 8px 24px rgba(245,185,66,.16)}.chart-col small{color:var(--muted);font-size:11px}.settings-list{display:flex;flex-direction:column}.settings-list>div{display:flex;justify-content:space-between;align-items:center;gap:15px;padding:15px 0;border-bottom:1px solid var(--line)}.settings-list>div:last-child{border-bottom:0}.admin-plan-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.admin-plan-editor{padding:22px;background:var(--surface);border:1px solid var(--line);border-radius:17px}.admin-plan-editor h3{margin:0 0 16px}.admin-editor-layout{display:grid;grid-template-columns:minmax(340px,.8fr) minmax(0,1.2fr);gap:18px}.admin-editor{position:sticky;top:92px;height:max-content}.content-list{display:flex;flex-direction:column;gap:11px}.content-item{padding:16px;border:1px solid var(--line);border-radius:13px;background:rgba(255,255,255,.025)}.content-item h4{margin:0 0 4px}.content-meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:12px;margin-bottom:9px}.content-actions{margin-top:12px}.content-actions button{border:0;border-radius:8px;padding:7px 10px;background:rgba(255,255,255,.06);color:var(--text)}.content-actions button:hover{color:var(--brand);background:rgba(245,185,66,.11)}.admin-shell .panel,.admin-plan-editor{box-shadow:0 14px 44px rgba(0,0,0,.12)}.admin-shell select.input option{background:#12201a;color:var(--text)}
@media(max-width:1100px){.admin-plan-grid{grid-template-columns:1fr 1fr}.admin-editor-layout{grid-template-columns:1fr}.admin-editor{position:static}.admin-shell{grid-template-columns:78px minmax(0,1fr)}.admin-sidebar{width:auto}.admin-sidebar .admin-role,.admin-sidebar .brand span:last-child,.admin-sidebar .side-nav a span:last-child,.admin-sidebar .side-user>div:last-child{display:none}}
@media(max-width:700px){.admin-shell{display:block}.admin-sidebar{position:fixed;left:-280px;width:260px}.admin-sidebar.open{left:0}.admin-sidebar .admin-role,.admin-sidebar .brand span:last-child,.admin-sidebar .side-nav a span:last-child,.admin-sidebar .side-user>div:last-child{display:block}.admin-toolbar,.action-row,.content-actions{align-items:stretch;flex-direction:column}.admin-toolbar>.input,.compact-input,.search-box{width:100%}.admin-plan-grid{grid-template-columns:1fr}.top-actions .status,.top-actions a{display:none}.admin-content{padding:20px 13px 45px}.admin-shell .welcome{display:block}.admin-shell .welcome .btn{display:inline-flex;margin-top:12px}.table-footer{align-items:flex-start;gap:8px;flex-direction:column}.admin-login-card{padding:24px 18px}.admin-chart{height:205px;gap:5px}}