body {
  background-color: var(--bg-subtle);
  background-image: var(--bp-grid);
  background-attachment: fixed;
}

/* ── App bar ──────────────────────────────────────────────────────────── */
.appbar {
  position: sticky; top: 0; z-index: 30;
  background: rgba(10,14,15,.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.appbar-inner {
  max-width: 1200px; margin: 0 auto; padding: .75rem 24px;
  display: flex; align-items: center; gap: 1.25rem;
}
.brand {
  font-family: var(--display); font-size: 1.7rem; letter-spacing: .04em;
  color: var(--text); text-decoration: none; line-height: 1; flex-shrink: 0;
}
.brand .accent { color: var(--dew); }
.appbar nav { display: flex; gap: .2rem; margin-left: .5rem; }
.appbar nav a {
  font-family: var(--mono); font-size: var(--fs-label); font-weight: 500;
  letter-spacing: .10em; text-transform: uppercase;
  color: var(--muted); padding: .4rem .7rem;
  transition: color var(--dur) var(--ease);
}
.appbar nav a:hover { color: var(--text); }
.appbar nav a.active { color: var(--dew); border-bottom: 2px solid var(--dew); }
.appbar .spacer { flex: 1; }
.scenario {
  font-family: var(--mono); font-size: var(--fs-label); font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase; color: var(--muted);
}
.scenario .name { color: var(--text); }

/* ── Layout ───────────────────────────────────────────────────────────── */
.workspace {
  max-width: 1200px; margin: 1.6rem auto; padding: 0 24px;
  display: grid; grid-template-columns: minmax(0,1fr) 400px; gap: 1.5rem; align-items: start;
}
@media (max-width: 1000px) { .workspace { grid-template-columns: 1fr; } }

.page-head { margin-bottom: 1.1rem; }
.page-head h1 { font-size: 2.2rem; }
.page-head p { color: var(--muted2); margin-top: .4rem; max-width: 60ch; font-size: var(--fs-sm); }
.trust-strip {
  display: flex; align-items: center; gap: .5rem; flex-wrap: wrap;
  margin-top: .7rem;
  font-family: var(--mono); font-size: var(--fs-label); color: var(--muted); letter-spacing: .04em;
}
.trust-strip .sep { color: var(--border-strong); }

.stack { display: flex; flex-direction: column; gap: 1.1rem; }

.section-card { padding: 1.4rem 1.5rem; }
.section-head { display: flex; align-items: center; gap: .9rem; margin-bottom: 1.1rem; }
.section-head .ix {
  font-family: var(--display); font-size: 2.2rem; line-height: 1;
  color: var(--dew-dim); letter-spacing: .04em; flex-shrink: 0;
}
.section-head h3 { margin: 0; }
.section-head .sub {
  font-family: var(--mono); font-size: var(--fs-label); font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); margin-left: auto;
}

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.grid3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 560px) { .grid2, .grid3 { grid-template-columns: 1fr; } }
.mw-280 { max-width: 280px; }
.mw-440 { max-width: 440px; }
.mw-560 { max-width: 560px; }
.mt-grid { margin-top: 1.1rem; }

/* segmented control */
.seg {
  display: inline-flex; background: var(--bg-sunken);
  border: 1px solid var(--border); padding: 3px; gap: 2px; margin-bottom: 1.1rem;
}
.seg button {
  font-family: var(--mono); font-size: var(--fs-label); font-weight: 500;
  letter-spacing: .08em; text-transform: uppercase;
  color: var(--muted); border: none; background: transparent;
  padding: .45rem .9rem; cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.seg button:hover { color: var(--text); }
.seg button.active {
  background: rgba(92,209,194,.10); color: var(--dew);
  border-bottom: 2px solid var(--dew);
}

.method-panel { display: none; }
.method-panel.active { display: block; }

/* vulnerability balance bar */
.vuln {
  margin-top: 1.2rem; background: var(--bg-sunken);
  border: 1px solid var(--border); padding: 1rem 1.1rem;
}
.vuln-row { display: flex; justify-content: space-between; font-family: var(--mono); font-size: var(--fs-sm); font-weight: 500; letter-spacing: .06em; text-transform: uppercase; }
.vuln-row .t { color: var(--danger); }
.vuln-row .p { color: var(--green); }
.vuln-track {
  height: 6px; margin: .6rem 0 .5rem;
  background: var(--green); overflow: hidden; display: flex;
}
.vuln-fill { background: var(--danger); height: 100%; transition: width 350ms var(--ease); }
.vuln-cap { font-size: var(--fs-label); color: var(--muted); font-family: var(--mono); letter-spacing: .01em; }

/* live readout strip */
.readout {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  background: rgba(45,106,99,.08);
  border: 1px solid var(--dew-dim);
  border-left: 3px solid var(--dew-dim);
  padding: .9rem 1.1rem; margin-top: 1.2rem;
}
.readout .formula { font-family: var(--mono); font-size: var(--fs-sm); color: var(--muted2); letter-spacing: .02em; }
.readout .val {
  font-family: var(--mono); font-size: 1.5rem; font-weight: 500;
  color: var(--dew); letter-spacing: -.02em; flex-shrink: 0;
}

/* note */
.note {
  display: flex; gap: .6rem; align-items: flex-start;
  background: rgba(92,209,194,.05);
  border-left: 2px solid var(--dew-dim);
  padding: .7rem .9rem; margin-top: 1rem;
  font-family: var(--mono); font-size: var(--fs-label);
  color: var(--muted2); line-height: 1.5; letter-spacing: .01em;
}

/* ── Results panel (sticky) ───────────────────────────────────────────── */
.results { position: sticky; top: 72px; display: flex; flex-direction: column; gap: 1.1rem; }

.result-hero {
  background: var(--bg-navy);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--dew-dim);
  padding: 1.6rem 1.6rem 1.5rem;
  color: var(--text); position: relative; overflow: hidden;
}
.result-hero::after {
  content:""; position:absolute; right:-40px; top:-40px; width:180px; height:180px;
  border-radius:50%;
  background: radial-gradient(circle, rgba(92,209,194,.12), transparent 70%);
}
.result-hero .eyebrow { color: var(--muted2); }
.result-hero .big {
  font-family: var(--display); font-weight: 400; font-size: 3.2rem;
  letter-spacing: .02em; line-height: 1.0; margin-top: .5rem;
}
.result-hero .big .cur { font-family: var(--mono); font-size: .85rem; color: var(--muted2); font-weight: 400; margin-left: .35rem; }
.result-hero .sub { color: var(--muted2); font-family: var(--mono); font-size: var(--fs-label); margin-top: .5rem; letter-spacing: .01em; }

.metric-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1px;
  background: var(--border); border: 1px solid var(--border);
}
.metric { background: var(--bg); padding: 1rem 1.1rem; }
.metric .k {
  font-family: var(--mono); font-size: var(--fs-label); text-transform: uppercase;
  letter-spacing: .10em; color: var(--muted); font-weight: 500;
}
.metric .v {
  font-family: var(--mono); font-size: 1.2rem; font-weight: 500;
  color: var(--text); margin-top: .3rem; letter-spacing: -.01em;
}
.metric .v .cur { font-size: .7rem; color: var(--muted); margin-left: .2rem; }

.chart-card { padding: 1.2rem 1.3rem 1.3rem; }
.chart-card .ch-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: .6rem; }
.chart-card h3 { font-size: var(--fs-h3); }
#lecbox { position: relative; height: 230px; background: transparent; }

/* privacy card */
.privacy-card {
  background: rgba(92,209,194,.04);
  border: 1px solid var(--border);
  border-left: 2px solid var(--dew-dim);
  padding: 1rem 1.2rem;
}
.privacy-pills { display: flex; flex-wrap: wrap; gap: .4rem; margin-bottom: .7rem; }
.pill {
  font-family: var(--mono); font-size: 10px; font-weight: 500;
  text-transform: uppercase; letter-spacing: .09em;
  color: var(--dew); background: rgba(92,209,194,.08);
  border: 1px solid var(--dew-dim); padding: .2rem .55rem;
}
.privacy-card p {
  font-family: var(--mono); font-size: var(--fs-label); color: var(--muted2);
  line-height: 1.55; letter-spacing: .01em; margin: 0;
}
.privacy-contact { margin-top: .6rem; }
.privacy-card code {
  font-family: var(--mono); color: var(--dew); background: rgba(92,209,194,.08);
  padding: .05em .3em; font-size: .9em;
}

.runbar { display: flex; gap: .7rem; }
.runbar .btn { flex: 1; justify-content: center; font-size: 1.1rem; }
.empty { color: var(--muted); font-family: var(--mono); font-size: var(--fs-label); text-align: center; padding: 2rem 1rem; letter-spacing: .06em; text-transform: uppercase; }