:root {
  --bg: #070c12;
  --panel: #101922;
  --text: #e7eef3;
  --muted: #8aa0ad;
  --line: rgba(176, 210, 220, .16);
  --accent: #3dbeff;
  --accent-dim: #1788b8;
  --danger: #ff5d57;
  --warn: #f0a202;
  --ok: #3dce8a;
  --shadow: 0 18px 48px rgba(0, 0, 0, .35);
  --font: Bahnschrift, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { font-family: var(--font); color: var(--text); background: var(--bg); }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }

.login-wrap {
  position: relative;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  background: #07131c;
  color: #e8eef4;
  overflow: hidden;
}
.night {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(680px 320px at 12% 0%, rgba(61, 190, 255, .22), transparent 62%),
    linear-gradient(105deg, rgba(5, 10, 16, .72) 0%, rgba(5, 10, 16, .28) 46%, rgba(5, 10, 16, .82) 100%),
    url("../img/login-bg.png") center / cover no-repeat;
}
.night:before { display: none; }
.login-hero, .login-card, .login-wrap > .site-foot { position: relative; z-index: 1; }
.login-hero { padding: 72px 64px 88px; display: flex; flex-direction: column; justify-content: center; }
.brand-mark { display: flex; gap: 12px; align-items: center; letter-spacing: .18em; font-size: 12px; color: #9ec0ff; }
.brand-mark b, .logo-sq {
  width: 36px; height: 36px; border-radius: 8px; display: grid; place-items: center;
  background: linear-gradient(160deg, #7ad7ff, #1494c4 48%, #0b3c52);
  color: #f4fbff; font-size: 16px;
  box-shadow: 0 0 22px rgba(61, 190, 255, .35);
}
.brand-mark b svg, .logo-sq svg { width: 20px; height: 20px; display: block; }
.brand-mark b svg *, .logo-sq svg * { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.brand-mark b svg .fill, .logo-sq svg .fill { fill: currentColor; stroke: none; }
.login-hero h1 { font-size: 48px; line-height: 1.16; margin: 26px 0 10px; font-weight: 620; letter-spacing: .04em; }
.hero-en { margin: 0 0 14px; color: #7eb0ff; letter-spacing: .14em; font-size: 12px; font-weight: 650; text-transform: uppercase; }
.login-hero p { max-width: 520px; color: #9aafbf; line-height: 1.8; }
.hero-stats { display: none; }
.hero-stats article { background: transparent; border: 0; border-left: 1px solid rgba(255,255,255,.16); border-radius: 0; padding: 2px 0 2px 14px; }
.hero-stats span { font-size: 12px; letter-spacing: .06em; color: #8ea3b3; }
.hero-stats b { display: block; margin-top: 6px; font-size: 34px; line-height: 1; color: #f4f7fa; font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.hero-stats .stat-crit { border-left-color: #E53935; }
.hero-stats .stat-crit b { color: #ff6b66; }
.login-note { margin-top: 22px; font-size: 12px; color: #8ea3b3; letter-spacing: .04em; }
.login-card { display: flex; align-items: center; justify-content: center; padding: 32px 32px 72px; }
.card-box {
  width: min(420px, 100%);
  background: rgba(10, 22, 32, .72);
  border: 1px solid rgba(255,255,255,.12);
  border-radius: 18px;
  box-shadow: 0 28px 70px rgba(0, 0, 0, .42), inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(18px);
  padding: 32px 28px;
  color: #e8eef4;
}
.login-wrap .card-box h2 { color: #f4f7fa; font-size: 28px; letter-spacing: .08em; }
.login-wrap .field label,
.login-wrap .field-hint,
.login-wrap .card-box .sub,
.login-wrap .site-foot { color: #8ea3b3; }
.login-wrap .field input,
.login-wrap .field select {
  background-color: rgba(255,255,255,.05);
  color: #f4f7fa;
  border-color: rgba(255,255,255,.14);
}
.login-wrap .field input::placeholder { color: #6d8294; }
.login-wrap .field select {
  background-image: linear-gradient(45deg, transparent 50%, #9aafbf 50%), linear-gradient(135deg, #9aafbf 50%, transparent 50%);
}
.login-wrap #btnEnter {
  background: linear-gradient(180deg, #7ad7ff, #1494c4 46%, #0c5874);
  border: 0;
  letter-spacing: .16em;
  box-shadow: 0 12px 28px rgba(20, 148, 196, .35);
}
.login-wrap #btnEnter:hover { filter: brightness(1.08); }
.login-wrap .forgot { color: #9ec0ff; }
.login-wrap .captcha-pic { background: rgba(255,255,255,.06); color: #9aafbf; border-color: rgba(255,255,255,.14); }
.card-box h2 { margin: 0 0 6px; }
.card-box .sub, .field-hint { color: var(--muted); font-size: 12px; margin: 6px 0 0; }
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 6px; }
.field input, .field select, .flow input, .flow select {
  width: 100%; border: 1px solid var(--line); background: #0c1620; color: var(--text); border-radius: 8px; padding: 10px 12px;
}
.field select { appearance: none; padding-right: 28px; background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%), linear-gradient(135deg, var(--muted) 50%, transparent 50%); background-position: calc(100% - 16px) 50%, calc(100% - 11px) 50%; background-size: 5px 5px; background-repeat: no-repeat; background-color: #0c1620; }
.captcha-row { display: flex; gap: 8px; }
.captcha-pic { width: 112px; height: 40px; border: 1px solid var(--line); border-radius: 8px; background: #0c1620; color: var(--muted); }
.login-extra { display: flex; justify-content: flex-end; margin: 4px 0 10px; }
.forgot { background: none; border: 0; color: var(--accent); font-size: 12px; }
.forgot.is-off { color: var(--muted); cursor: not-allowed; opacity: .6; }
.btn {
  background: var(--accent); color: #fff; border: 1px solid var(--accent-dim);
  border-radius: 8px; padding: 8px 14px; font-weight: 650;
}
.btn:hover { background: var(--accent-dim); }
.btn.block { width: 100%; margin-top: 6px; padding: 11px; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--line); font-weight: 500; }
.btn.danger { background: rgba(255, 93, 87, .12); color: #ffb4b0; border-color: rgba(255, 93, 87, .35); }
.hints { margin-top: 12px; background: rgba(8, 16, 24, .45); border: 1px solid var(--line); border-radius: 8px; padding: 10px 12px; font-size: 12px; color: var(--muted); }
.demo-tip {
  position: absolute; left: 28px; bottom: 46px; width: min(460px, 42%);
  background: rgba(255,255,255,.94); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; font-size: 12px; line-height: 1.7; color: var(--muted); box-shadow: var(--shadow);
}
.site-foot { text-align: center; color: var(--muted); font-size: 12px; padding: 10px 16px 14px; }
.login-wrap > .site-foot { position: absolute; left: 0; right: 0; bottom: 0; }
.app > .site-foot { background: #07131c; color: #8ea3b3; }

.app { min-height: 100vh; display: none; grid-template-rows: auto minmax(0, 1fr) auto; }
body.in-app .login-wrap { display: none; }
body.in-app .app { display: grid; }
.topbar {
  display: flex; flex-direction: column;
  background: rgba(7, 12, 18, .92); color: #e8eef4;
  border-bottom: 1px solid rgba(176, 210, 220, .12);
  backdrop-filter: blur(16px);
}
.top-row { display: flex; align-items: center; justify-content: space-between; min-height: 56px; padding: 0 16px; }
.topbar .btn.ghost { background: transparent; color: #e8eef4; border-color: rgba(255,255,255,.16); }
.topbar em, .clock { color: #8ea3b3; }
.demo-bar { background: #fff7e6; color: #8a5a00; border-top: 1px solid #ffe0a3; text-align: center; font-size: 12px; padding: 6px 12px; }
.bell { position: relative; }
.bell b { position: absolute; top: -6px; right: -8px; min-width: 16px; height: 16px; padding: 0 4px; border-radius: 99px; background: var(--danger); color: #fff; font-size: 10px; line-height: 16px; }
.top-left { display: flex; align-items: center; gap: 10px; }
.logo-sq { width: 32px; height: 32px; }
.topbar .logo-sq svg { width: 18px; height: 18px; }
.topbar em { font-style: normal; color: var(--muted); font-size: 12px; margin-left: 8px; }
.top-right { display: flex; align-items: center; gap: 10px; font-size: 13px; }
.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 0; background: #070c12; }
.side { background: linear-gradient(180deg, #0b141c, #070c12); color: #c5d4df; padding: 12px 10px; overflow: auto; border-right: 1px solid rgba(176, 210, 220, .08); }
.side a { display: flex; gap: 8px; align-items: center; padding: 10px 12px; border-radius: 8px; color: #c5d4df; font-size: 13.5px; }
.side a.active, .side a:hover { background: rgba(61, 190, 255, .12); color: #fff; box-shadow: inset 2px 0 0 var(--accent); }
.side .ico { width: 18px; height: 18px; flex: 0 0 18px; display: grid; place-items: center; color: #7ec8e0; }
.side .ico svg { width: 16px; height: 16px; display: block; }
.side .ico svg * { fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round; }
.side .ico svg .dot { fill: currentColor; stroke: none; }
.main {
  padding: 18px 20px 32px; min-width: 0; overflow: auto;
  background:
    radial-gradient(720px 220px at 8% 0%, rgba(61, 190, 255, .08), transparent 62%),
    radial-gradient(480px 280px at 100% 0%, rgba(20, 80, 96, .18), transparent 55%),
    #070c12;
}
.page-head { display: flex; justify-content: space-between; gap: 12px; align-items: flex-end; margin-bottom: 12px; flex-wrap: wrap; }
.page-head h1 { margin: 0; font-size: 22px; letter-spacing: .12em; font-weight: 560; }
.page-head p { margin: 4px 0 0; color: var(--muted); font-size: 12.5px; }
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.tab { border: 1px solid var(--line); background: transparent; border-radius: 999px; padding: 6px 12px; color: var(--muted); }
.tab.active { background: rgba(61, 190, 255, .14); color: #d7f4ff; border-color: rgba(61, 190, 255, .45); font-weight: 650; }
.grid { display: grid; gap: 12px; }
.cols-4 { grid-template-columns: repeat(4, 1fr); }
.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cols-2 { grid-template-columns: 1.2fr .8fr; }
.kpi, .panel {
  background: linear-gradient(180deg, rgba(22, 38, 50, .92), rgba(12, 22, 32, .92));
  border: 1px solid rgba(176, 210, 220, .14);
  border-radius: 12px; padding: 14px 16px;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04), 0 16px 36px rgba(0, 0, 0, .22);
}
.kpi { border-left: 2px solid var(--accent); }
.kpi .k { font-size: 12px; color: var(--muted); letter-spacing: .14em; }
.kpi .v { font-size: 32px; margin-top: 6px; color: #f4fbff; font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.kpi.red { border-left-color: var(--danger); }
.kpi.red .v { color: var(--danger); }
.kpi.amber { border-left-color: var(--warn); }
.kpi.amber .v { color: var(--warn); }
.panel h3 { margin: 0 0 10px; font-size: 14px; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th, table.data td { text-align: left; padding: 8px; border-bottom: 1px solid rgba(176, 210, 220, .1); vertical-align: middle; }
table.data th { color: var(--muted); background: rgba(255,255,255,.03); font-weight: 650; letter-spacing: .06em; }
.tag { display: inline-flex; align-items: center; padding: 1px 8px; border-radius: 999px; border: 1px solid var(--line); font-size: 11px; background: rgba(255,255,255,.04); }
.tag.red { color: #ffb4b0; background: rgba(255, 93, 87, .12); border-color: rgba(255, 93, 87, .35); }
.tag.amber { color: #ffd27a; background: rgba(240, 162, 2, .12); border-color: rgba(240, 162, 2, .35); }
.tag.green { color: #8eecc0; background: rgba(61, 206, 138, .12); border-color: rgba(61, 206, 138, .35); }
.tag.blue { color: #b7ecff; background: rgba(61, 190, 255, .12); border-color: rgba(61, 190, 255, .35); }
.flow { border: 1px solid rgba(176, 210, 220, .14); background: rgba(8, 16, 24, .55); padding: 12px; border-radius: 10px; margin-bottom: 12px; }
.flow h4 { margin: 0 0 8px; font-size: 13px; color: var(--accent); }
.flow .row { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 180px), 1fr)); gap: 8px; }
.flow .row > * { min-width: 0; }
.bars { display: flex; flex-direction: column; gap: 8px; }
.bar-row { display: grid; grid-template-columns: 140px 1fr 28px; gap: 8px; align-items: center; font-size: 12px; }
.bar { height: 8px; background: rgba(255,255,255,.08); border-radius: 99px; overflow: hidden; }
.bar i { display: block; height: 100%; background: var(--accent); }
.pie-wrap { display: flex; gap: 16px; align-items: center; }
.pie { width: 148px; height: 148px; border-radius: 50%; flex: none; }
.pie-wrap ul { list-style: none; margin: 0; padding: 0; font-size: 12px; }
.pie-wrap li { display: flex; gap: 8px; align-items: center; margin: 4px 0; }
.pie-wrap i { width: 8px; height: 8px; border-radius: 2px; }
.spark { width: 100%; height: 150px; display: block; }
.spark polyline { fill: none; stroke: var(--accent); stroke-width: 2; }
.click-row { cursor: pointer; }
.trend div { flex: 1; background: rgba(61, 190, 255, .18); border-radius: 6px 6px 0 0; position: relative; }
.trend div span { position: absolute; bottom: -18px; left: 0; right: 0; text-align: center; font-size: 11px; color: var(--muted); }
.plant {
  position: relative; height: 460px; border-radius: 12px; overflow: hidden;
  background: radial-gradient(420px 180px at 20% 20%, rgba(61, 190, 255, .12), transparent 60%), #0c1822;
  border: 1px solid var(--line);
}
.plant .tank { position: absolute; border: 1px solid rgba(126, 200, 224, .45); border-radius: 8px; background: rgba(16, 40, 52, .55); color: #d7e8ef; }
.dot {
  position: absolute; width: 14px; height: 14px; border-radius: 50%; border: 2px solid #fff;
  transform: translate(-50%, -50%); cursor: pointer; box-shadow: 0 0 0 4px rgba(26,82,118,.15);
}
.dot.on { background: var(--ok); }
.dot.alarm { background: var(--danger); }
.dot.off { background: #95a5a6; }
.map-side { position: absolute; right: 12px; top: 12px; width: 260px; background: rgba(10, 18, 26, .92); color: var(--text); border-radius: 10px; padding: 12px; border: 1px solid var(--line); }
.vid-grid { display: grid; gap: 6px; background: #0e1c28; padding: 6px; border-radius: 10px; min-height: 420px; }
.vid-grid.g1 { grid-template-columns: 1fr; }
.vid-grid.g4 { grid-template-columns: 1fr 1fr; }
.vid-grid.g9 { grid-template-columns: 1fr 1fr 1fr; }
.vid-grid.g16 { grid-template-columns: repeat(4, 1fr); }
.cell { position: relative; background: #163246; min-height: 140px; overflow: hidden; }
.cell canvas { width: 100%; height: auto; min-height: 180px; display: block; background: #102028; }
.vid-grid.g1 .cell canvas { min-height: 460px; }
.cell em { position: absolute; left: 8px; top: 6px; color: #d6eaf3; font-size: 12px; font-style: normal; }
.phone { width: 320px; border: 10px solid #0c1822; border-radius: 28px; overflow: hidden; background: #101922; box-shadow: 0 0 0 1px rgba(176, 210, 220, .16); }
.phone header { background: linear-gradient(180deg, #1494c4, #0b3c52); color: #fff; padding: 14px; }
.phone .item { padding: 10px 12px; border-bottom: 1px solid var(--line); font-size: 13px; }
.msg { padding: 8px 0; border-bottom: 1px solid rgba(176, 210, 220, .1); }
.msg b { display: block; }
.msg span { color: var(--muted); font-size: 12px; }
.over { outline: 2px solid var(--danger); }
.side-label { margin: 14px 12px 4px; font-size: 11px; letter-spacing: .12em; color: #7f97a8; }
.clock { font-variant-numeric: tabular-nums; color: var(--muted); font-size: 12px; }
.still {
  display: inline-block; width: 72px; height: 40px; border-radius: 4px; position: relative; overflow: hidden;
  background: linear-gradient(#8fb4c9, #6d8b78 55%, #4e6248);
  border: 1px solid #243844;
}
.still i { position: absolute; bottom: 6px; width: 8px; height: 16px; background: #1c2833; border-radius: 2px; }
.todo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.todo-grid a { display: block; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; background: rgba(8, 16, 24, .45); }
.todo-grid a b { display: block; font-size: 20px; color: #d7f4ff; }
.todo-grid a span { color: var(--muted); font-size: 12px; }
.plant-mini {
  position: relative; height: 220px; border-radius: 8px; overflow: hidden;
  background:
    linear-gradient(rgba(255,255,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.06) 1px, transparent 1px),
    #0c1822;
  background-size: 28px 28px, 28px 28px, auto;
}
.ops { display: flex; flex-wrap: wrap; gap: 4px; }
table.data tr:hover td { background: rgba(61, 190, 255, .06); }
.sheet-mask { position: fixed; inset: 0; background: rgba(4, 8, 12, .55); z-index: 40; display: flex; justify-content: flex-end; }
.sheet-mask[hidden] { display: none; }
.sheet { width: min(420px, 100%); height: 100%; background: #101922; color: var(--text); box-shadow: var(--shadow); padding: 16px 18px; overflow: auto; border-left: 1px solid var(--line); }
.sheet header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.cell .osd { position: absolute; left: 0; right: 0; bottom: 0; display: flex; justify-content: space-between; padding: 4px 8px; background: rgba(0,0,0,.45); color: #e8f2f6; font-size: 12px; }
.login-wrap { position: relative; }
.toast {
  position: fixed; right: 16px; bottom: 16px; background: #14324a; color: #fff;
  border-radius: 8px; padding: 10px 14px; opacity: 0; transition: .2s; pointer-events: none;
}
.toast.show { opacity: 1; }
.layer-bar { display: flex; gap: 14px; margin-bottom: 8px; font-size: 13px; color: var(--muted); }
.vms-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
.vms-bar .btn.on { background: var(--accent); color: #06202a; border-color: var(--accent); }
.vms-stream { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.vms-stream select { height: 32px; }
.layout-picks { display: inline-flex; gap: 4px; }
.vms { display: grid; grid-template-columns: 220px minmax(0, 1fr) 232px; gap: 8px; min-height: 0; }
.vms.no-tree { grid-template-columns: minmax(0, 1fr) 232px; }
.vms.no-ptz { grid-template-columns: 220px minmax(0, 1fr); }
.vms.no-tree.no-ptz { grid-template-columns: minmax(0, 1fr); }
.vms-tree, .vms-ptz { background: #07131c; color: #d5e2ea; border-radius: 10px; padding: 10px 10px 14px; overflow: auto; max-height: calc(100vh - 210px); }
.vms-tree h3, .vms-ptz h3 { margin: 8px 0; font-size: 13px; letter-spacing: .14em; color: #9ad7ea; }
.vms-tree input, .vms-ptz input { width: 100%; height: 32px; border-radius: 6px; border: 1px solid rgba(255,255,255,.12); background: #10202c; color: #e8eef4; padding: 0 8px; }
.ch-group { margin: 12px 4px 4px; font-size: 11px; letter-spacing: .12em; color: #7f97a8; }
.ch-item { width: 100%; display: flex; justify-content: space-between; gap: 8px; align-items: center; padding: 7px 8px; border: 0; border-radius: 6px; background: transparent; color: #d5e2ea; text-align: left; cursor: pointer; }
.ch-item em { font-style: normal; color: #7f97a8; font-size: 11px; }
.ch-item.on, .ch-item:hover { background: rgba(61, 190, 255, .14); }
.ch-st { display: inline-block; width: 7px; height: 7px; border-radius: 50%; margin-right: 6px; background: #95a5a6; }
.ch-st.on { background: #00A854; }
.vms .vid-grid { height: calc(100vh - 210px); min-height: 360px; }
.vms .cell { min-height: 0; height: 100%; background: #0c1822; cursor: pointer; }
.vms .cell canvas { width: 100%; height: 100%; min-height: 0; display: block; }
.vms .cell.zoom { overflow: hidden; }
.vms .cell.zoom canvas { transform: scale(1.55); transform-origin: center; }
.vms .cell.sel { outline: 2px solid var(--accent); outline-offset: -2px; }
.vms .cell.empty { display: grid; place-items: center; color: #8ea3b3; text-align: center; font-size: 12px; }
.vms .cell.empty b { display: block; color: #d5e2ea; font-size: 14px; margin-bottom: 4px; }
.tile-bar { position: absolute; right: 6px; bottom: 28px; display: flex; gap: 4px; opacity: 0; z-index: 2; }
.cell:hover .tile-bar, .cell.sel .tile-bar { opacity: 1; }
.tile-act, .ptz-key { border: 1px solid rgba(255,255,255,.16); background: rgba(7, 19, 28, .82); color: #e8eef4; border-radius: 4px; padding: 2px 6px; font-size: 12px; }
.ptz-pad { display: grid; grid-template-columns: repeat(3, 36px); gap: 4px; justify-content: center; margin: 8px 0; }
.ptz-key { width: 36px; height: 28px; padding: 0; }
.ptz-row { display: flex; gap: 6px; margin: 6px 0; }
.ptz-row .ptz-key { width: auto; flex: 1; }
.ptz-now, .ptz-empty { margin: 0 0 8px; font-size: 12px; color: #8ea3b3; }
.osd .rec { color: #ff8a84; font-style: normal; margin-left: 8px; }
.osd .rec:before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: #E53935; margin-right: 4px; }
.snap-row { display: flex; gap: 10px; align-items: center; padding: 8px 0; border-bottom: 1px solid rgba(176, 210, 220, .1); }
.snap-row img { width: 120px; height: 68px; object-fit: cover; border-radius: 4px; background: #102028; }
.snap-row span { display: block; color: var(--muted); font-size: 12px; margin-top: 4px; }
@media (max-width: 980px) {
  .shell { grid-template-columns: 1fr; }
  .side { display: flex; gap: 4px; overflow: auto; }
  .side a { white-space: nowrap; }
  .cols-4, .cols-3 { grid-template-columns: 1fr 1fr; }
  .vms, .vms.no-tree, .vms.no-ptz, .vms.no-tree.no-ptz { grid-template-columns: 1fr; }
  .vms .vid-grid, .vms-tree, .vms-ptz { max-height: none; height: auto; }
}
@media (max-width: 860px) {
  .login-wrap { grid-template-columns: 1fr; }
  .login-hero { padding: 28px 20px 8px; }
  .demo-tip { position: relative; left: auto; bottom: auto; width: auto; margin: 0 16px 56px; }
  .login-card { padding: 12px 16px 24px; }
}
@media (max-width: 720px) {
  .cols-4, .cols-3, .cols-2 { grid-template-columns: 1fr; }
}
.home-stage { position: relative; height: calc(100vh - 168px); min-height: 520px; border-radius: 12px; overflow: hidden; background: #07131c; }
#plant3d, #plant3d canvas { width: 100%; height: 100%; display: block; }
.kpi-float { position: absolute; left: 12px; top: 12px; right: 360px; display: flex; gap: 8px; flex-wrap: wrap; z-index: 2; pointer-events: none; }
.kpi-float .kpi { padding: 8px 12px; min-width: 84px; pointer-events: auto; cursor: pointer; text-align: left; color: inherit; background: linear-gradient(180deg, rgba(22, 38, 50, .92), rgba(12, 22, 32, .92)); font: inherit; transition: transform .15s ease, border-color .15s ease; }
.kpi-float .kpi:hover { transform: translateY(-2px); border-color: var(--accent); }
.kpi-float .kpi .v { font-size: 22px; margin-top: 2px; }
.home-hint { position: absolute; left: 14px; bottom: 12px; z-index: 2; color: #8ea3b3; font-size: 12px; letter-spacing: .04em; }
.zone-panel { position: absolute; top: 12px; right: 12px; bottom: 12px; width: min(340px, calc(100% - 24px)); z-index: 3; overflow: auto; background: rgba(10, 18, 26, .92); color: var(--text); border: 1px solid rgba(176, 210, 220, .16); border-radius: 12px; padding: 12px 14px; box-shadow: 0 18px 40px rgba(0,0,0,.4); backdrop-filter: blur(16px); }
.zone-panel header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.zone-panel header b { display: block; font-size: 18px; }
.zone-panel header span, .zone-dev i { display: block; color: var(--muted); font-style: normal; font-size: 12px; margin-top: 2px; }
.zone-panel h4 { margin: 12px 0 6px; font-size: 13px; }
.zone-vid { position: relative; margin-top: 10px; border-radius: 8px; overflow: hidden; background: #102028; }
.zone-vid canvas { width: 100%; height: auto; display: block; }
.zone-dev { width: 100%; display: flex; justify-content: space-between; align-items: center; gap: 8px; text-align: left; padding: 8px; margin-bottom: 6px; border: 1px solid var(--line); border-radius: 8px; background: rgba(8, 16, 24, .55); color: var(--text); }
.zone-dev.on { border-color: var(--accent); background: rgba(61, 190, 255, .12); }
.zone-dev.static { cursor: default; }
@media (max-width: 980px) {
  .kpi-float { right: 12px; }
  .home-stage { height: auto; min-height: 640px; }
  .zone-panel { position: relative; top: auto; right: auto; bottom: auto; width: auto; margin: 12px; }
}