/* ---- tokens: glass-slate system (illustration-friendly) ---- */
:root {
  --bg: #f1f5f9;
  --text: #1e293b;
  --sub: #475569;
  --line: #e2e8f0;
  --ink: #0f172a;
  --surface: #ffffff;
  --soft: #f4f4f2;
  --hover: rgba(15, 23, 42, .06);
  --on-ink: #f8fafc;
  --border-strong: #cbd5e1;
  --danger: #dc2626;
  --accent: #6366f1;
  /* glass card — alpha kept low so the art shows through */
  --glass-bg: rgba(255, 255, 255, .5);
  --glass-bg-hover: rgba(255, 255, 255, .08);
  --glass-brd: rgba(255, 255, 255, .55);
  --glass-shd: 0 8px 32px 0 rgba(31, 38, 135, .07);
  --glass-fil: blur(12px) saturate(180%);
  --plain-bg: rgba(255, 255, 255, .86);
  --bg-overlay: linear-gradient(135deg,
    rgba(255, 255, 255, .75) 0%,
    rgba(255, 255, 255, .4) 50%,
    rgba(255, 255, 255, .15) 100%);
  --text-glow: 0 1px 2px rgba(255, 255, 255, .7);
  --ease: cubic-bezier(.22, 1, .36, 1);
  --ease-out-expo: cubic-bezier(.16, 1, .3, 1);
  --ease-out-quart: cubic-bezier(.25, 1, .5, 1);
  --serif: "Noto Serif SC", "Source Serif Pro", "Songti SC", STSong, Georgia, serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color-scheme: light;
}
html[data-theme=dark] {
  --bg: #0f172a;
  --text: #f8fafc;
  --sub: #cbd5e1;
  --line: rgba(148, 163, 184, .16);
  --ink: #f8fafc;
  --surface: #1e293b;
  --soft: #334155;
  --hover: rgba(255, 255, 255, .07);
  --on-ink: #0f172a;
  --border-strong: rgba(148, 163, 184, .45);
  --danger: #f87171;
  --accent: #818cf8;
  --glass-bg: rgba(15, 23, 42, .42);
  --glass-bg-hover: rgba(15, 23, 42, .08);
  --glass-brd: rgba(255, 255, 255, .1);
  --glass-shd: 0 8px 32px 0 rgba(0, 0, 0, .37);
  --glass-fil: blur(12px) saturate(180%);
  --plain-bg: rgba(15, 23, 42, .82);
  --bg-overlay: linear-gradient(135deg,
    rgba(15, 23, 42, .75) 0%,
    rgba(15, 23, 42, .4) 50%,
    rgba(15, 23, 42, .15) 100%);
  --text-glow: 0 1px 2px rgba(0, 0, 0, .6);
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
::selection { background: rgba(99, 102, 241, .22); color: var(--text); }
html[data-theme=dark] ::selection { background: rgba(129, 140, 248, .32); color: var(--text); }
html { scrollbar-gutter: stable; }
html, body {
  margin: 0;
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.8;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}
body { min-height: 100vh; }
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 3px; }
button { font-family: var(--sans); cursor: pointer; }
input { font-family: var(--sans); color: var(--text); }

/* background image layer + gradient scrim so art never fights the text.
   inset overscan + mouse parallax (--px/--py set by JS) */
#bgLayer {
  position: fixed; inset: -4vmax; z-index: 0;
  background-size: cover; background-position: var(--bg-pos, center);
  transform: translate3d(var(--px, 0px), var(--py, 0px), 0);
  transition: filter .6s var(--ease-out-quart);
}
#bgLayer::after {
  content: ''; position: absolute; inset: 0;
  background: var(--bg-overlay);
  opacity: var(--bg-dim, 1);
}
#bgLayer video {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; object-position: var(--bg-pos, center);
}
html[data-theme=dark] #bgLayer img,
html[data-theme=dark] #bgLayer video { filter: brightness(.85); }

/* ---- topbar (no glass — sits directly on the background) ---- */
.topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  height: 58px; padding: 0 28px;
  background: transparent;
  border-bottom: 1px solid var(--line);
  text-shadow: var(--text-glow);
}
/* with a background chosen, the hairline cuts across the art — drop it */
body.has-bg .topbar { border-bottom-color: transparent; }
.brand {
  font-family: var(--serif); font-size: 19px; font-weight: 700;
  letter-spacing: .04em; cursor: pointer; user-select: none;
}
.actions { display: flex; align-items: center; gap: 6px; }

/* underline that slides out on hover — moments signature */
.u-link {
  background: linear-gradient(currentColor, currentColor) no-repeat left calc(100% - .05em);
  background-size: 100% 1px;
  padding-bottom: .08em;
  transition: background-size .35s var(--ease);
}
.u-link:hover { background-size: 0% 1px; }

.tbtn {
  position: relative; z-index: 0; overflow: hidden;
  border: none; background: none; color: var(--sub);
  font-size: 13px; letter-spacing: .16em; padding: 7px 14px; border-radius: 999px;
  transition: color .35s var(--ease), transform .35s var(--ease-out-expo);
}
.tbtn::before {
  content: ''; position: absolute; inset: 0; z-index: -1;
  background: var(--ink); border-radius: inherit;
  transform: translateY(101%); transition: transform .5s var(--ease-out-expo);
}
.tbtn:hover { color: var(--on-ink); }
.tbtn:hover::before { transform: none; }
.tbtn:active { scale: .94; }
.ibtn {
  border: none; background: none; color: var(--sub);
  width: 34px; height: 34px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  transition: color .25s var(--ease), background .25s var(--ease);
}
.ibtn:hover { color: var(--ink); background: var(--hover); }
.ibtn:active { scale: .9; }
html[data-theme=light] .i-sun { display: none; }
html[data-theme=dark] .i-moon { display: none; }

/* ---- layout ---- */
main { max-width: 1480px; margin: 0 auto; padding: 34px 28px 120px; position: relative; z-index: 1; }
.sec-title {
  font: 600 11px var(--sans); letter-spacing: .22em; color: var(--sub);
  margin: 0 0 14px; text-transform: uppercase; text-shadow: var(--text-glow);
}

/* unified frosted-glass card */
.stat, .modal {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-fil); -webkit-backdrop-filter: var(--glass-fil);
  border: 1px solid var(--glass-brd);
  box-shadow: var(--glass-shd);
  border-radius: 12px;
  transition: background .45s var(--ease-out-quart), backdrop-filter .45s var(--ease-out-quart),
    -webkit-backdrop-filter .45s var(--ease-out-quart), border-color .3s var(--ease-out-quart),
    box-shadow .3s var(--ease-out-quart);
}
/* hover: the glass "clears" — alpha drops AND the blur fades, so the art reads through */
.stat:hover {
  background: var(--glass-bg-hover);
  backdrop-filter: blur(2px) saturate(120%); -webkit-backdrop-filter: blur(2px) saturate(120%);
}

/* detail view: no panels at all — content sits straight on the blurred background.
   keep the parallax translate inside the transform so zoom doesn't snap it away;
   .bg-anim (toggled briefly by route()) gives the zoom/blur one eased transition */
#bgLayer.bg-anim { transition: filter .6s var(--ease-out-quart), transform .6s var(--ease-out-quart); }
body.view-detail #bgLayer {
  filter: blur(18px) saturate(140%);
  transform: translate3d(var(--px, 0px), var(--py, 0px), 0) scale(1.08);
}
body.view-detail .chart-block,
body.view-detail .info-grid {
  background: none; backdrop-filter: none; -webkit-backdrop-filter: none;
  border: none; box-shadow: none;
}
body.view-detail .info-grid { padding: 22px 0; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
body.view-detail .chart-block { padding: 10px 0 6px; }
body.view-detail .chart-wrap canvas { filter: drop-shadow(0 2px 10px rgba(0, 0, 0, .25)); }
/* detail text sits on the blurred art directly — no white outline glow */
body.view-detail .detail-head,
body.view-detail .tabs,
body.view-detail .info-grid .cell .k,
body.view-detail .info-grid .cell .v,
body.view-detail .chart-block .cap,
body.view-detail .ranges,
body.view-detail .ping-list,
body.view-detail .ping-empty { text-shadow: none; }

/* ---- summary strip (4 glass cards) ---- */
.summary {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px; margin-bottom: 34px;
}
.stat { padding: 18px 20px; min-height: 108px; }
.stat .head {
  font: 600 11px var(--sans); letter-spacing: .18em; color: var(--sub);
  margin-bottom: 10px;
}
.stat .big {
  font-family: var(--serif); font-size: 27px; font-weight: 700; line-height: 1.2;
  font-variant-numeric: tabular-nums; color: var(--text);
}
.stat .sub { font: 12px var(--sans); color: var(--sub); letter-spacing: .06em; margin-top: 8px; }
.stat .pair {
  display: flex; justify-content: space-between; gap: 22px; font: 600 14px var(--sans);
  font-variant-numeric: tabular-nums; padding: 2px 0; color: var(--text);
}
.stat .pair .k { color: var(--sub); font-weight: 400; margin-right: 6px; display: inline-flex; align-items: center; }
.stat .mini { font: 600 11px var(--sans); color: var(--sub); letter-spacing: .14em; margin: 10px 0 2px; }
.stat canvas { width: 100%; height: 34px; display: block; margin-top: 8px; }

/* ---- node grid (4 columns, separate glass cards) ---- */
.feed {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}
.node {
  display: block; padding: 20px 18px 22px;
  cursor: pointer;
  background: transparent; box-shadow: none;
  border: 1px solid var(--glass-brd); border-radius: 12px;
  opacity: 0; transform: translateY(14px);
  transition: opacity .55s var(--ease), background .45s var(--ease-out-quart),
    backdrop-filter .45s var(--ease-out-quart), -webkit-backdrop-filter .45s var(--ease-out-quart),
    border-color .3s var(--ease-out-quart), box-shadow .3s var(--ease-out-quart);
}
.node.in { opacity: 1; transform: none; }
.node.in:hover {
  background: var(--glass-bg-hover);
  border-color: var(--border-strong);
  box-shadow: 0 10px 34px -6px rgba(31, 38, 135, .18);
}
.node .row1 { display: flex; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.node h2 { margin: 0; font-size: 17px; font-weight: 700; letter-spacing: .02em; color: var(--text); }
.badge {
  font: 600 11.5px var(--sans); letter-spacing: .12em; color: var(--ink);
  border: 1px solid var(--ink); border-radius: 6px; padding: 1px 8px;
}
.pill {
  margin-left: auto; display: inline-flex; align-items: center; gap: 7px;
  font: 500 13px var(--sans); letter-spacing: .06em; color: var(--ink);
  font-variant-numeric: tabular-nums; white-space: nowrap;
  border: 1px solid var(--ink); border-radius: 999px; padding: 2px 11px;
}
.pill .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--ink); }
.pill.off .dot { background: var(--danger); }
.node .osline {
  display: flex; justify-content: space-between; gap: 16px;
  font: 500 12.5px var(--sans); letter-spacing: .08em; color: var(--sub);
  margin: 6px 0 16px; font-variant-numeric: tabular-nums;
}
.meters { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 18px; row-gap: 14px; }
.meter .lab {
  display: flex; justify-content: space-between; align-items: center;
  font: 500 13px var(--sans); letter-spacing: .06em; color: var(--sub); margin-bottom: 6px;
}
.meter .lab .mk { display: inline-flex; align-items: center; gap: 6px; }
.meter .lab .mk .ic { display: inline-flex; opacity: .8; }
.meter .lab .p { font-weight: 600; color: var(--text); font-variant-numeric: tabular-nums; font-size: 14px; }
.meter .track { height: 5px; background: var(--line); border-radius: 999px; overflow: hidden; }
.meter .fill { height: 100%; width: 0; background: var(--ink); border-radius: 999px; transition: width .6s var(--ease); }
.meter .val { font: 500 12px var(--sans); color: var(--sub); margin-top: 7px; letter-spacing: .04em; font-variant-numeric: tabular-nums; }
.netbox {
  margin-top: 16px; padding-top: 14px; border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
  font: 600 13px/1.4 var(--sans); font-variant-numeric: tabular-nums; white-space: nowrap;
}
.netbox .row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 18px; color: var(--text); }
.netbox .row span { display: inline-flex; align-items: center; gap: 6px; }
.netbox .row b { font-weight: 600; font-family: var(--sans); font-size: 13px; }
.netbox .row.cum { color: var(--sub); font-weight: 500; }
.netbox .row.cum b { font-weight: 500; }
.netbox svg { flex: 0 0 auto; opacity: .75; }
/* latency chips under each node card */
.pingbox {
  margin-top: 10px; padding-top: 10px; border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 6px;
}
.pingbox .pg {
  display: inline-flex; align-items: center; gap: 5px;
  font: 500 11.5px var(--sans); letter-spacing: .05em; color: var(--sub);
  border: 1px solid var(--line); border-radius: 999px; padding: 1px 9px;
  font-variant-numeric: tabular-nums; white-space: nowrap;
}
.pingbox .pg b { color: var(--text); font-weight: 600; }
.pingbox .pg i { font-style: normal; color: var(--danger); font-weight: 600; font-size: 11px; }
.pingbox .pg.bad b { color: var(--danger); }
.rngv { color: var(--text); font-variant-numeric: tabular-nums; }
.ping-empty { color: var(--sub); font: 13px var(--sans); letter-spacing: .08em; padding: 30px 0; text-shadow: none; }
/* admin ping-target rows */
.ping-row { display: grid; grid-template-columns: 1fr 1.4fr 76px 76px auto; gap: 8px; align-items: center; margin-bottom: 8px; }
.ping-row input, .ping-row select {
  border: 1px solid var(--line); border-radius: 8px; background: var(--surface);
  color: var(--text); padding: 7px 9px; font: 13px var(--sans); outline: none; width: 100%;
}
.ping-row input:focus, .ping-row select:focus { border-color: var(--ink); }
.ping-row .del { border: 1px solid var(--line); background: none; color: var(--sub); border-radius: 8px; width: 30px; height: 32px; font-size: 15px; }
.ping-row .del:hover { border-color: var(--danger); color: var(--danger); }
#empty { color: var(--sub); font: 13px var(--sans); letter-spacing: .1em; padding: 40px 0; text-align: center; text-shadow: var(--text-glow); }

/* ---- detail ---- */
.detail-head { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; margin-bottom: 26px; text-shadow: var(--text-glow); }
.detail-head h2 { margin: 0; font-size: 24px; font-weight: 700; color: var(--text); }
.back { font: 500 13px var(--sans); color: var(--sub); cursor: pointer; letter-spacing: .1em; }
.back:hover { color: var(--ink); }
.info-grid {
  display: grid; grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px 28px; padding: 22px 24px; margin-bottom: 26px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-fil); -webkit-backdrop-filter: var(--glass-fil);
  border: 1px solid var(--glass-brd); box-shadow: var(--glass-shd); border-radius: 12px;
}
.info-grid .cell .k { font: 600 11px var(--sans); letter-spacing: .18em; color: var(--sub); margin-bottom: 4px; }
.info-grid .cell .v { font-size: 15px; font-weight: 500; font-variant-numeric: tabular-nums; color: var(--text); }
.tabs { display: flex; gap: 22px; margin-bottom: 16px; text-shadow: var(--text-glow); }
.tab {
  border: none; background: none; padding: 8px 2px;
  font: 500 13px var(--sans); letter-spacing: .14em; color: var(--sub);
  transition: color .25s var(--ease);
}
.tab:hover { color: var(--text); }
.tab.on { color: var(--ink); font-weight: 600; }
.ranges { display: flex; gap: 8px; margin-bottom: 20px; }
.range {
  border: 1px solid var(--line); background: var(--glass-bg); color: var(--sub);
  padding: 4px 13px; font: 500 12px var(--sans); letter-spacing: .1em; border-radius: 8px;
  backdrop-filter: var(--glass-fil); -webkit-backdrop-filter: var(--glass-fil);
  transition: all .25s var(--ease);
}
.range:hover { border-color: var(--border-strong); color: var(--text); }
.range.on { background: var(--ink); color: var(--on-ink); border-color: var(--ink); font-weight: 600; }
.chart-block { margin-bottom: 24px; padding: 16px 18px 14px; }
.chart-block .cap { font: 600 12px var(--sans); letter-spacing: .14em; color: var(--sub); margin-bottom: 8px; }
.chart-wrap { width: 100%; }
.chart-wrap canvas { width: 100%; height: 230px; display: block; filter: drop-shadow(0 1px 2px rgba(0, 0, 0, .18)); }

/* ---- modal ---- */
.modal-mask {
  position: fixed; inset: 0; z-index: 400;
  background: rgba(34, 34, 34, .22);
  /* frosted like the detail view: everything behind (cards + bg art) blurs out */
  backdrop-filter: blur(14px) saturate(130%); -webkit-backdrop-filter: blur(14px) saturate(130%);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.modal {
  width: 340px; max-width: 92vw; overflow: hidden;
  animation: modalIn .3s var(--ease);
}
/* solid plate so the dialog never inherits a nearly-clear glass_alpha */
.modal { background: var(--plain-bg); backdrop-filter: none; -webkit-backdrop-filter: none; }
.modal.wide { width: 460px; }
.m-title { font: 600 14px var(--sans); letter-spacing: .14em; padding: 18px 22px 14px; }
.m-body { padding: 0 22px 8px; max-height: 62vh; overflow: auto; }
.fld { margin-bottom: 14px; }
.fld label { display: block; font: 11px var(--sans); letter-spacing: .16em; color: var(--sub); margin-bottom: 5px; }
.fld input, #pwInput {
  width: 100%; border: none; border-bottom: 1px solid var(--line);
  background: transparent; padding: 8px 2px; font: 15px var(--serif); outline: none;
  transition: border-color .25s var(--ease);
}
.fld input:focus, #pwInput:focus { border-color: var(--ink); }
#pwInput { margin: 0 22px 18px; width: calc(100% - 44px); }
.m-btns { display: flex; border-top: 1px solid var(--line); }
.m-btns button {
  flex: 1; border: none; background: transparent; padding: 14px 0;
  font: 600 14px var(--serif); letter-spacing: .1em; color: var(--sub);
  transition: background .2s, color .2s;
}
.m-btns button:hover { background: var(--hover); color: var(--text); }
.m-btns button.primary { color: var(--ink); }
@keyframes modalIn { from { transform: translateY(10px); opacity: 0; } to { transform: none; opacity: 1; } }

/* ---- admin page ---- */
.admin-wrap { max-width: 760px; margin: 0 auto; }
.d-sec {
  margin: 0 0 22px; padding: 22px 24px;
  background: var(--glass-bg);
  backdrop-filter: var(--glass-fil); -webkit-backdrop-filter: var(--glass-fil);
  border: 1px solid var(--glass-brd); box-shadow: var(--glass-shd); border-radius: 12px;
}
.d-sec > .sec-title { margin-bottom: 14px; color: var(--text); letter-spacing: .2em; }
.d-row {
  display: flex; align-items: center; gap: 10px;
  padding: 13px 0; border-bottom: 1px solid var(--line);
}
.d-row .nm { font-size: 15px; font-weight: 600; color: var(--text); }
.d-row .id { font: 500 12px var(--sans); color: var(--sub); letter-spacing: .06em; }
.d-row .sp { margin-left: auto; }
.mini-btn {
  border: 1px solid var(--line); background: var(--plain-bg); color: var(--sub);
  padding: 5px 12px; font: 600 12px var(--sans); letter-spacing: .08em; border-radius: 8px;
  transition: all .25s var(--ease);
}
.mini-btn:hover { border-color: var(--ink); color: var(--ink); }
.mini-btn.danger:hover { border-color: var(--danger); color: var(--danger); }
.add-btn {
  width: 100%; border: 1px dashed var(--border-strong); background: none; color: var(--sub);
  padding: 11px; font: 600 13px var(--sans); letter-spacing: .16em; border-radius: 10px;
  transition: all .25s var(--ease); margin-top: 12px;
}
.add-btn:hover { border-color: var(--ink); color: var(--ink); }
.secret-line {
  font: 500 12px var(--sans); color: var(--sub); letter-spacing: .04em;
  word-break: break-all; padding: 8px 0 12px; font-variant-numeric: tabular-nums;
}
.secret-line code {
  display: block; margin-top: 6px; padding: 8px 10px; border-radius: 8px;
  background: var(--plain-bg); color: var(--text);
  font: 12px/1.6 ui-monospace, Consolas, monospace; word-break: break-all;
}
.d-field { margin-bottom: 14px; }
.d-field label { display: block; font: 600 11px var(--sans); letter-spacing: .16em; color: var(--sub); margin-bottom: 5px; }
.d-field input {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--surface);
  color: var(--text); padding: 9px 11px; font: 14px var(--serif); outline: none;
  transition: border-color .25s var(--ease);
}
.d-field input:focus, .d-field select:focus { border-color: var(--ink); }
.d-field select {
  width: 100%; border: 1px solid var(--line); border-radius: 8px; background: var(--surface);
  color: var(--text); padding: 9px 11px; font: 14px var(--sans); outline: none;
  transition: border-color .25s var(--ease);
}
/* about / changelog modal */
.ab-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.ab-name { font: 700 18px var(--serif); letter-spacing: .04em; }
.ab-ver { font: 500 12px var(--sans); color: var(--sub); letter-spacing: .08em; }
.ab-ver b { color: var(--text); }
.ab-note { font: 13px var(--sans); color: var(--sub); margin: 8px 0 16px; }
.ab-cl .cl { padding: 10px 0; border-top: 1px solid var(--line); }
.ab-cl .clh { font: 600 12px var(--sans); letter-spacing: .12em; color: var(--text); }
.ab-cl .clt { font: 13px/1.7 var(--sans); color: var(--sub); margin-top: 3px; }
.d-field input[type=range] {
  -webkit-appearance: none; appearance: none; height: 4px; padding: 0; border: none;
  background: var(--border-strong); border-radius: 999px; cursor: pointer;
}
.d-field input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none; width: 16px; height: 16px; border-radius: 50%;
  background: var(--ink); border: none; transition: transform .2s var(--ease);
}
.d-field input[type=range]::-webkit-slider-thumb:hover { transform: scale(1.15); }
.d-field input[type=range]::-moz-range-thumb {
  width: 16px; height: 16px; border-radius: 50%; background: var(--ink); border: none;
}
.d-save {
  border: none; background: var(--ink); color: var(--on-ink);
  padding: 10px 26px; font: 600 13px var(--sans); letter-spacing: .24em; border-radius: 10px;
  transition: opacity .2s;
}
.d-save:hover { opacity: .82; }
.d-hint { font: 11px var(--sans); color: var(--sub); letter-spacing: .06em; margin-top: 8px; }

/* ---- chart hover tooltip ---- */
.chart-tip {
  position: fixed; z-index: 600; pointer-events: none;
  background: var(--glass-bg); backdrop-filter: var(--glass-fil); -webkit-backdrop-filter: var(--glass-fil);
  border: 1px solid var(--glass-brd); box-shadow: var(--glass-shd);
  border-radius: 10px; padding: 8px 12px;
  font: 500 12px/1.7 var(--sans); color: var(--text); font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.chart-tip .tt { color: var(--sub); font-size: 11px; letter-spacing: .04em; }
.chart-tip .tr { display: flex; align-items: center; gap: 7px; font-weight: 600; }
.chart-tip .tdot { width: 7px; height: 7px; border-radius: 50%; display: inline-block; }

/* ---- toast ---- */
.toast {
  position: fixed; left: 50%; bottom: 40px; z-index: 500;
  transform: translate(-50%, 6px); opacity: 0;
  background: var(--ink); color: var(--on-ink);
  padding: 10px 22px; font: 13px var(--sans); letter-spacing: .1em;
  border-radius: 2px; box-shadow: 0 8px 24px rgba(0, 0, 0, .12);
  transition: transform .18s var(--ease), opacity .18s var(--ease);
  pointer-events: none;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }

/* ---- responsive ---- */
@media (max-width: 1200px) {
  .feed { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 980px) {
  .summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .info-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 640px) {
  main { padding: 24px 16px 100px; }
  .summary { grid-template-columns: 1fr; }
  .feed { grid-template-columns: 1fr; }
  .info-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .node { opacity: 1; transform: none; }
}