/* ========================================================================== 
   LED Blog — scholarly editorial theme
   Warm paper surface, restrained green/gold accents, dynamic result panels.
   ========================================================================== */

:root {
  --paper: #fbf7ee;
  --paper-soft: #f5efe2;
  --paper-ink: #17201b;
  --ink-muted: #5d665f;
  --ink-soft: #7b837c;
  --line: #e3d7c3;
  --line-strong: #d3c09f;
  --card: rgba(255, 252, 245, 0.82);
  --card-solid: #fffdf8;
  --green: #315f4e;
  --green-deep: #173e31;
  --green-soft: #e5eee8;
  --gold: #b98620;
  --gold-deep: #805a11;
  --gold-soft: #f4e6c8;
  --rose: #9d4b41;
  --blue: #346d8d;
  --shadow: 0 18px 48px rgba(56, 43, 22, 0.10), 0 2px 8px rgba(56, 43, 22, 0.05);
  --shadow-soft: 0 10px 28px rgba(56, 43, 22, 0.08);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 28px;
  --container: 1180px;
  --nav-h: 68px;
}

* { box-sizing: border-box; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-h) + 16px);
  background: var(--paper);
}
body {
  margin: 0;
  color: var(--paper-ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.68;
  background:
    radial-gradient(900px 420px at 82% -160px, rgba(185, 134, 32, 0.16), transparent 64%),
    radial-gradient(760px 520px at 3% 10%, rgba(49, 95, 78, 0.13), transparent 62%),
    linear-gradient(180deg, #fcf8ef 0%, #f7f1e6 42%, #fbf7ee 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(79, 62, 34, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(79, 62, 34, 0.05) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: linear-gradient(to bottom, black 0%, transparent 78%);
}

a { color: var(--green); text-decoration: none; }
a:hover { color: var(--green-deep); text-decoration: underline; text-decoration-color: rgba(49, 95, 78, 0.35); }
img, svg { max-width: 100%; }
code, pre, .mono { font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }
sub { line-height: 0; }

.container { max-width: var(--container); margin: 0 auto; padding: 0 26px; }
.container.narrow { max-width: 1040px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.align-start { align-items: start; }

.site-nav {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--nav-h);
  background: rgba(251, 247, 238, 0.84);
  backdrop-filter: blur(16px) saturate(150%);
  -webkit-backdrop-filter: blur(16px) saturate(150%);
  border-bottom: 1px solid rgba(211, 192, 159, 0.62);
}
.nav-wrap {
  max-width: var(--container);
  height: 100%;
  margin: 0 auto;
  padding: 0 26px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--paper-ink);
  font-weight: 750;
  letter-spacing: -0.01em;
  text-decoration: none !important;
}
.brand-mark {
  width: 42px;
  height: 34px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  color: var(--gold-deep);
  background: linear-gradient(145deg, #fff8e8 0%, #ead3a0 100%);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 13px;
  font-weight: 750;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.75), 0 8px 18px rgba(128, 90, 17, 0.12);
}
.brand-name { font-size: 15px; }
.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-wrap: wrap;
}
.nav-links a {
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--ink-muted);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  transition: background .18s ease, color .18s ease, transform .18s ease;
}
.nav-links a:hover { background: rgba(49, 95, 78, 0.08); color: var(--green-deep); transform: translateY(-1px); }
.nav-links a.active { background: var(--green-soft); color: var(--green-deep); }
.nav-cta {
  margin-left: 6px;
  background: var(--green) !important;
  color: #fffdf8 !important;
  border: 1px solid rgba(23, 62, 49, 0.15);
  box-shadow: 0 8px 22px rgba(49, 95, 78, 0.18);
}
.nav-cta:hover { background: var(--green-deep) !important; color: #fff !important; }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,0.55);
  color: var(--paper-ink);
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

.hero {
  position: relative;
  padding: 86px 0 76px;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -160px;
  bottom: -220px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(49,95,78,0.13), transparent 62%);
  pointer-events: none;
}
.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1.02fr) minmax(430px, .78fr);
  gap: 42px;
  align-items: center;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 7px 13px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 253, 248, 0.68);
  color: var(--gold-deep);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.kicker span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 6px rgba(185, 134, 32, 0.12);
}
.hero h1 {
  margin: 22px 0 18px;
  max-width: 820px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(44px, 6.4vw, 80px);
  line-height: .98;
  letter-spacing: -0.045em;
  font-weight: 750;
}
.hero h1 span {
  display: block;
  color: transparent;
  background: linear-gradient(92deg, var(--green-deep) 0%, #547b55 42%, var(--gold-deep) 100%);
  -webkit-background-clip: text;
  background-clip: text;
}
.hero h1 em {
  display: block;
  margin-top: 12px;
  font-family: "Inter", sans-serif;
  font-style: normal;
  font-size: clamp(18px, 2vw, 24px);
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--ink-muted);
  font-weight: 600;
}
.tagline {
  margin: 0;
  max-width: 780px;
  color: var(--ink-muted);
  font-size: clamp(16px, 1.55vw, 19px);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 26px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 11px 18px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 253, 248, 0.88);
  color: var(--paper-ink) !important;
  font-weight: 700;
  font-size: 14px;
  box-shadow: var(--shadow-soft);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
  text-decoration: none !important;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn.primary { background: var(--green); border-color: var(--green); color: #fffdf8 !important; }
.btn.primary:hover { background: var(--green-deep); }
.btn.quiet { background: transparent; box-shadow: none; }
.hero-metrics {
  margin-top: 30px;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}
.hero-metrics div {
  min-height: 122px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(255, 253, 248, 0.62);
  box-shadow: 0 1px 0 rgba(255,255,255,.8) inset;
}
.hero-metrics strong {
  display: block;
  color: var(--green-deep);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(30px, 3.8vw, 46px);
  line-height: 1;
  letter-spacing: -0.04em;
}
.hero-metrics span {
  display: block;
  margin-top: 9px;
  color: var(--ink-muted);
  font-size: 13.5px;
  line-height: 1.45;
}

.paper-card {
  background: var(--card);
  border: 1px solid rgba(211, 192, 159, 0.72);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
.visual-card { padding: 20px; }
.visual-title {
  display: inline-flex;
  margin-bottom: 12px;
  color: var(--gold-deep);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.fusion-svg {
  display: block;
  width: 100%;
  min-height: 360px;
  border-radius: 22px;
  background:
    radial-gradient(circle at 18% 12%, rgba(185,134,32,.12), transparent 34%),
    radial-gradient(circle at 80% 82%, rgba(49,95,78,.10), transparent 38%),
    #fffdf8;
}
.svg-head { font: 750 24px "Source Serif 4", Georgia, serif; fill: #17201b; }
.svg-body { font: 600 15.5px "Inter", sans-serif; fill: #55605a; }
.svg-note { font: 500 14px "Inter", sans-serif; fill: #7b837c; }
.svg-caption { font: 600 16px "JetBrains Mono", monospace; fill: #805a11; }
.token-row rect { fill: #d8c08d; opacity: .78; }
.fusion-chip rect { fill: rgba(255, 250, 240, .82); stroke: rgba(211, 192, 159, .72); }
.fusion-chip text {
  fill: var(--gold-deep);
  font-family: "JetBrains Mono", monospace;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .02em;
}

.section { padding: 82px 0; position: relative; }
.section.tinted {
  border-top: 1px solid rgba(211, 192, 159, .62);
  border-bottom: 1px solid rgba(211, 192, 159, .62);
  background:
    linear-gradient(180deg, rgba(245, 239, 226, .86), rgba(248, 243, 234, .72)),
    radial-gradient(640px 260px at 12% 0%, rgba(49,95,78,.08), transparent 60%);
}
.section-label {
  color: var(--gold-deep);
  font-family: "JetBrains Mono", monospace;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .09em;
  text-transform: uppercase;
}
.section h2 {
  margin: 8px 0 14px;
  max-width: 890px;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(32px, 4vw, 52px);
  line-height: 1.08;
  letter-spacing: -0.035em;
  font-weight: 750;
}
.lead {
  max-width: 910px;
  margin: 0 0 28px;
  color: var(--ink-muted);
  font-size: clamp(16px, 1.6vw, 19px);
}
.claim-box {
  margin-top: 30px;
  padding: 26px 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-strong);
  background: linear-gradient(135deg, rgba(255,253,248,.9), rgba(244,230,200,.55));
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 26px;
  align-items: start;
  box-shadow: var(--shadow-soft);
}
.claim-number {
  font-family: "JetBrains Mono", monospace;
  color: var(--gold-deep);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.claim-box p { margin: 0; color: var(--paper-ink); font-size: 18px; line-height: 1.65; }

.grid { display: grid; gap: 18px; }
.grid > * { min-width: 0; }
.grid.cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid.cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.mini-card { padding: 22px; transition: transform .18s ease, box-shadow .18s ease; }
.mini-card:hover { transform: translateY(-3px); }
.mini-index {
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--green-soft);
  color: var(--green-deep);
  font-family: "Source Serif 4", Georgia, serif;
  font-weight: 750;
}
.mini-card h3, .paper-card h3 {
  margin: 12px 0 8px;
  font-size: 18px;
  letter-spacing: -0.015em;
}
.mini-card p, .paper-card p { margin: 0; color: var(--ink-muted); font-size: 15px; }

.method-flow {
  display: grid;
  grid-template-columns: 1fr 34px 1fr 34px 1fr 34px 1fr;
  align-items: stretch;
  gap: 10px;
  margin-top: 26px;
}
.flow-node {
  padding: 22px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255,253,248,.8);
  min-height: 190px;
}
.flow-node.emphasized {
  border-color: rgba(185,134,32,.46);
  background: linear-gradient(180deg, #fff8e8, rgba(255,253,248,.88));
}
.flow-node span {
  display: inline-grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--gold-soft);
  color: var(--gold-deep);
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
}
.flow-node h3 { margin: 18px 0 8px; }
.flow-node p { font-size: 14.5px; }
.flow-arrow {
  position: relative;
  min-height: 1px;
}
.flow-arrow::before {
  content: "";
  position: absolute;
  left: 3px;
  right: 3px;
  top: 50%;
  height: 2px;
  background: linear-gradient(90deg, var(--line-strong), rgba(49,95,78,.42));
}
.flow-arrow::after {
  content: "";
  position: absolute;
  right: 1px;
  top: calc(50% - 5px);
  width: 10px;
  height: 10px;
  border-top: 2px solid rgba(49,95,78,.52);
  border-right: 2px solid rgba(49,95,78,.52);
  transform: rotate(45deg);
}
.formula-card { padding: 24px; }
.equation {
  margin-top: 18px;
  padding: 18px;
  border-radius: 16px;
  border: 1px solid rgba(211,192,159,.72);
  background: #fffaf0;
  color: var(--green-deep);
  font-family: "JetBrains Mono", monospace;
  font-size: 14px;
  line-height: 1.8;
  overflow-x: auto;
}

.evidence-grid { margin-top: 22px; }
.metric-tile { padding: 24px; position: relative; overflow: hidden; }
.metric-tile::after {
  content: "";
  position: absolute;
  right: -48px;
  top: -48px;
  width: 134px;
  height: 134px;
  border-radius: 50%;
  background: rgba(49,95,78,.09);
}
.metric-tile.accent::after { background: rgba(185,134,32,.12); }
.metric-tile.green::after { background: rgba(52,109,141,.10); }
.metric-tile small {
  display: block;
  color: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
}
.metric-tile strong {
  display: block;
  margin-top: 18px;
  color: var(--green-deep);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 56px;
  line-height: .9;
  letter-spacing: -0.045em;
}
.metric-tile span { display: block; margin-top: 10px; color: var(--ink-muted); font-weight: 600; }
.insight-card {
  padding: 24px;
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(420px, 1fr);
  gap: 24px;
  align-items: start;
}

.results-shell { padding: 18px; }
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 6px;
  border-radius: 999px;
  background: rgba(245, 239, 226, .86);
  border: 1px solid rgba(211, 192, 159, .64);
}
.tabs button, .metric-switch button {
  border: 0;
  border-radius: 999px;
  padding: 9px 14px;
  background: transparent;
  color: var(--ink-muted);
  font: 700 13px "Inter", sans-serif;
  cursor: pointer;
  transition: background .16s ease, color .16s ease, transform .16s ease;
}
.tabs button:hover, .metric-switch button:hover { color: var(--green-deep); }
.tabs button.active, .metric-switch button.active {
  background: var(--card-solid);
  color: var(--green-deep);
  box-shadow: 0 6px 16px rgba(56,43,22,.08);
}
.tab-panel { display: none; padding: 24px 6px 4px; }
.tab-panel.active { display: block; animation: fadeIn .22s ease; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 20px;
}
.panel-head.tight { margin-bottom: 16px; }
.panel-head h3 { margin: 0 0 5px; font-size: 20px; }
.panel-head p { margin: 0; color: var(--ink-muted); font-size: 14.5px; }
.metric-switch {
  flex: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 5px;
  background: rgba(255,253,248,.68);
  border: 1px solid var(--line);
  border-radius: 999px;
}

.dynamic-table { overflow-x: auto; border-radius: 18px; border: 1px solid var(--line); background: rgba(255,253,248,.66); }
.dynamic-table table { width: 100%; border-collapse: collapse; min-width: 680px; }
.dynamic-table.compact table { min-width: 0; }
.dynamic-table th, .dynamic-table td {
  padding: 13px 14px;
  border-bottom: 1px solid rgba(227, 215, 195, .78);
  text-align: left;
  vertical-align: middle;
  font-size: 14px;
}
.dynamic-table th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #f7efdf;
  color: var(--green-deep);
  font-size: 12px;
  font-family: "JetBrains Mono", monospace;
  letter-spacing: .04em;
  text-transform: uppercase;
  cursor: pointer;
  user-select: none;
}
.dynamic-table th.no-sort { cursor: default; }
.dynamic-table tr:last-child td { border-bottom: 0; }
.dynamic-table tbody tr { transition: background .14s ease; }
.dynamic-table tbody tr:hover { background: rgba(49,95,78,.045); }
.dynamic-table td.numeric { font-variant-numeric: tabular-nums; font-family: "JetBrains Mono", monospace; }
.dynamic-table .gain { color: #245b44; font-weight: 700; }
.dynamic-table .loss { color: var(--rose); font-weight: 700; }
.dynamic-table .best { color: var(--gold-deep); font-weight: 800; }
.dynamic-table caption {
  text-align: left;
  padding: 12px 14px;
  color: var(--ink-soft);
  font-size: 13px;
}

.bar-board { display: grid; gap: 10px; }
.bar-item {
  display: grid;
  grid-template-columns: minmax(180px, .42fr) minmax(160px, 1fr) 78px;
  gap: 12px;
  align-items: center;
  padding: 11px 12px;
  border-radius: 14px;
  background: rgba(255,253,248,.7);
  border: 1px solid rgba(227,215,195,.72);
}
.bar-item .bar-name { font-weight: 700; font-size: 14px; }
.bar-track {
  position: relative;
  height: 13px;
  border-radius: 999px;
  background: #eee4d1;
  overflow: hidden;
}
.bar-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 0%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--green), var(--gold));
  transition: width .8s cubic-bezier(.2,.8,.2,1);
}
.bar-item.baseline .bar-fill { background: linear-gradient(90deg, #829086, #b5a78c); }
.bar-value { font-family: "JetBrains Mono", monospace; color: var(--green-deep); text-align: right; font-weight: 700; }
.bar-scale-note {
  margin: 2px 4px 0;
  color: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  text-align: right;
}
.compact-bars .bar-item { grid-template-columns: minmax(100px, .32fr) minmax(160px, 1fr) 72px; }

.efficiency-card {
  padding: 24px;
  overflow: hidden;
}
.efficiency-card .dynamic-table,
.efficiency-card .scatter-wrap { max-width: 100%; }
.breakdown { display: grid; gap: 12px; }
.breakdown-row {
  display: grid;
  grid-template-columns: minmax(92px, 120px) minmax(0, 1fr) minmax(64px, 84px);
  gap: 12px;
  align-items: center;
}
.breakdown-label { font-weight: 700; color: var(--paper-ink); }
.breakdown-track { height: 16px; background: #eee4d1; border-radius: 999px; overflow: hidden; }
.breakdown-fill { height: 100%; width: 0%; border-radius: inherit; background: linear-gradient(90deg, var(--green), var(--gold)); transition: width .75s ease; }
.breakdown-value { font-family: "JetBrains Mono", monospace; text-align: right; color: var(--green-deep); font-weight: 700; }
.scatter-wrap {
  position: relative;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: rgba(255,253,248,.66);
  overflow: hidden;
}
.scatter-svg {
  width: 100%;
  height: auto;
  display: block;
  min-height: 0;
}
.scatter-axis-line {
  stroke: rgba(125, 139, 128, 0.45);
  stroke-width: 1.2;
}
.scatter-grid {
  stroke: rgba(227,215,195,.58);
  stroke-width: 1;
}
.scatter-tick {
  fill: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
}
.scatter-axis-title {
  fill: var(--paper-ink);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.scatter-region {
  fill: rgba(49,95,78,.05);
  stroke: rgba(49,95,78,.20);
  stroke-width: 1.1;
}
.scatter-region.huge {
  fill: rgba(52,109,141,.045);
  stroke: rgba(52,109,141,.18);
}
.scatter-region-label {
  fill: var(--ink-soft);
  font-family: "JetBrains Mono", monospace;
  font-size: 11px;
  letter-spacing: .03em;
  text-transform: uppercase;
}
.scatter-dot text {
  fill: #fffdf8;
  font-family: "JetBrains Mono", monospace;
  font-size: 9px;
  font-weight: 800;
  pointer-events: none;
}
.scatter-dot circle {
  stroke: rgba(255,253,248,.82);
  stroke-width: 1.3;
  filter: drop-shadow(0 6px 10px rgba(56,43,22,.18));
}
.scatter-dot:hover circle,
.scatter-dot:focus circle { stroke-width: 1.9; filter: drop-shadow(0 10px 18px rgba(56,43,22,.24)); }
.scatter-callout path {
  fill: none;
  stroke: rgba(130, 112, 71, 0.4);
  stroke-width: 1.2;
  stroke-dasharray: 3 3;
}
.scatter-callout rect {
  fill: rgba(255, 253, 248, .94);
  stroke: rgba(211, 192, 159, .88);
}
.scatter-callout text {
  fill: var(--paper-ink);
  font-family: "Inter", sans-serif;
  font-size: 11px;
  font-weight: 700;
}
.scatter-callout text.muted {
  fill: var(--ink-muted);
  font-weight: 600;
}
.scatter-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  padding: 10px 14px 14px;
  color: var(--ink-muted);
  font-size: 12.5px;
}
.scatter-legend span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.scatter-legend span::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.scatter-legend .led::before { background: var(--green); }
.scatter-legend .detector::before { background: var(--gold); }
.scatter-legend .mllm::before { background: var(--blue); }

.code-card { padding: 22px; }
.code-card h3 { margin-top: 0; }
.code {
  margin: 12px 0 0;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid rgba(43, 66, 55, .18);
  background: #18231e;
  color: #eef5ed;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.65;
}
.code code { color: inherit; }
.resource-card { padding: 24px; display: block; color: var(--paper-ink) !important; transition: transform .18s ease; }
.resource-card:hover { transform: translateY(-3px); text-decoration: none; }
.resource-card span {
  display: inline-flex;
  color: var(--gold-deep);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.bibtex-wrap { position: relative; }
.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 2;
  border: 1px solid rgba(255,255,255,.22);
  border-radius: 999px;
  padding: 7px 11px;
  background: rgba(255,255,255,.08);
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.site-footer {
  padding: 28px 0;
  border-top: 1px solid var(--line);
  background: rgba(245,239,226,.64);
  color: var(--ink-muted);
  font-size: 14px;
}
.footer-wrap { display: flex; justify-content: space-between; gap: 18px; align-items: center; }

@media (max-width: 1080px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { max-width: 720px; }
  .method-flow { grid-template-columns: 1fr; }
  .flow-arrow { min-height: 32px; }
  .flow-arrow::before { top: 4px; bottom: 4px; left: 50%; width: 2px; height: auto; }
  .flow-arrow::after { right: auto; left: calc(50% - 5px); top: auto; bottom: 0; transform: rotate(135deg); }
  .insight-card { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  .grid.cols-2, .grid.cols-3 { grid-template-columns: 1fr; }
  .hero-metrics { grid-template-columns: 1fr; }
  .claim-box { grid-template-columns: 1fr; gap: 10px; }
  .panel-head { flex-direction: column; }
  .metric-switch { border-radius: 18px; }
  .bar-item { grid-template-columns: 1fr; gap: 8px; }
  .bar-value { text-align: left; }
  .breakdown-row { grid-template-columns: 1fr; gap: 7px; }
  .breakdown-value { text-align: left; }
  .efficiency-card { padding: 18px; }
  .footer-wrap { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 700px) {
  :root { --nav-h: 62px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    display: none;
    position: absolute;
    left: 12px;
    right: 12px;
    top: calc(var(--nav-h) + 8px);
    padding: 12px;
    border: 1px solid var(--line);
    border-radius: 22px;
    background: rgba(255,253,248,.96);
    box-shadow: var(--shadow);
  }
  .nav-links.open { display: grid; grid-template-columns: 1fr 1fr; }
  .nav-cta { margin-left: 0; text-align: center; }
  .hero { padding-top: 54px; }
  .hero h1 { font-size: clamp(40px, 12vw, 58px); }
  .container, .nav-wrap { padding-left: 18px; padding-right: 18px; }
  .section { padding: 62px 0; }
  .tabs { border-radius: 22px; }
  .tabs button { flex: 1 1 auto; }
  .scatter-legend { font-size: 12px; gap: 10px; }
}