:root {
  color-scheme: light;
  --ink: #111827;
  --muted: #5f6b82;
  --line: #dbe4ff;
  --paper: #f6f8ff;
  --panel: #ffffff;
  --wash: #eef3ff;
  --teal: #00b8d9;
  --teal-deep: #0866ff;
  --coral: #7c3aed;
  --gold: #70e1ff;
  --charcoal: #101a3a;
  --shadow: 0 24px 70px rgba(8, 102, 255, 0.16);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  letter-spacing: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: 100%;
  padding: 16px clamp(20px, 4vw, 64px);
  margin: 0 auto;
  border: 1px solid rgba(255, 255, 255, 0.58);
  border-width: 0 0 1px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.68), rgba(230, 238, 255, 0.48)),
    rgba(246, 248, 255, 0.62);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.82),
    0 18px 48px rgba(8, 102, 255, 0.09);
  backdrop-filter: blur(24px) saturate(175%);
  -webkit-backdrop-filter: blur(24px) saturate(175%);
  isolation: isolate;
  transform: translateY(0);
  transition:
    width 260ms ease,
    transform 260ms ease,
    gap 260ms ease,
    padding 260ms ease,
    border-radius 260ms ease,
    background 260ms ease,
    box-shadow 260ms ease;
  will-change: width, transform, padding, border-radius;
}

.site-header::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  border-radius: inherit;
  background:
    radial-gradient(circle at 18% 18%, rgba(112, 225, 255, 0.22), transparent 35%),
    radial-gradient(circle at 86% 22%, rgba(124, 58, 237, 0.13), transparent 38%);
  content: "";
  pointer-events: none;
}

.site-header.is-condensed {
  gap: 16px;
  width: min(820px, calc(100% - 40px));
  padding: 9px 16px;
  border-width: 1px;
  border-radius: 24px;
  transform: translateY(12px);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.68), rgba(233, 241, 255, 0.38)),
    rgba(248, 251, 255, 0.48);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    inset 0 -1px 0 rgba(124, 58, 237, 0.08),
    0 22px 58px rgba(8, 102, 255, 0.15),
    0 6px 18px rgba(17, 24, 39, 0.07);
}

.site-header.is-condensed .brand-mark {
  width: 62px;
  height: 40px;
  border-radius: 13px;
}

.site-header.is-condensed .brand-mark::after {
  border-radius: 15px;
}

.site-header.is-condensed nav a {
  padding: 8px 10px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-weight: 800;
}

.brand-mark {
  position: relative;
  display: block;
  width: 76px;
  height: 49px;
  flex: 0 0 auto;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.78);
  overflow: visible;
  box-shadow:
    0 11px 26px rgba(8, 102, 255, 0.15),
    0 4px 11px rgba(124, 58, 237, 0.1);
  isolation: isolate;
  transition:
    width 260ms ease,
    height 260ms ease,
    border-radius 260ms ease,
    box-shadow 260ms ease;
}

.brand-mark::before {
  position: absolute;
  inset: -4px;
  z-index: -1;
  border-radius: 18px;
  background: radial-gradient(circle at 28% 24%, rgba(112, 225, 255, 0.32), transparent 48%),
    radial-gradient(circle at 80% 72%, rgba(124, 58, 237, 0.22), transparent 46%);
  content: "";
  filter: blur(3px);
  opacity: 0.76;
}

.brand-mark::after {
  position: absolute;
  inset: -2px;
  z-index: 3;
  border-radius: 16px;
  border: 2px solid rgba(0, 184, 217, 0.72);
  box-shadow:
    inset 0 0 0 1px rgba(124, 58, 237, 0.48),
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    0 0 0 1px rgba(8, 102, 255, 0.1);
  content: "";
  pointer-events: none;
}

.sand-logo {
  position: absolute;
  inset: 0;
  z-index: 1;
  display: block;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  object-fit: cover;
  object-position: center;
}

nav {
  display: flex;
  align-items: center;
  gap: 5px;
}

nav a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 34px;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 650;
  line-height: 1;
  padding: 10px 12px;
  white-space: nowrap;
  transition:
    background 180ms ease,
    color 180ms ease,
    gap 220ms ease,
    font-size 220ms ease,
    padding 260ms ease;
  transform: translateZ(0);
}

nav a svg {
  display: block;
  width: 15px;
  height: 15px;
  flex: 0 0 auto;
  stroke-width: 2.35;
  transition:
    width 220ms ease,
    height 220ms ease,
    stroke-width 220ms ease;
}

nav a:hover {
  background: rgba(8, 102, 255, 0.08);
  color: var(--ink);
}

main {
  overflow: hidden;
}

.hero {
  position: relative;
  display: block;
  min-height: min(720px, calc(100vh - 72px));
  padding: clamp(48px, 7vw, 86px) clamp(20px, 5vw, 76px) 38px;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  isolation: isolate;
  background:
    linear-gradient(90deg, rgba(246, 248, 255, 0.88) 0%, rgba(246, 248, 255, 0.66) 43%, rgba(246, 248, 255, 0.16) 100%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.66) 0%, rgba(243, 246, 255, 0.2) 100%),
    url("./assets/hero-data-desert.png") center bottom / cover no-repeat,
    #f3f6ff;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  background:
    linear-gradient(180deg, rgba(246, 248, 255, 0.02) 0%, rgba(124, 58, 237, 0.06) 78%, rgba(8, 102, 255, 0.08) 100%),
    radial-gradient(80% 60% at 12% 55%, rgba(255, 255, 255, 0.32), transparent 70%);
  pointer-events: none;
}

.hero > * {
  position: relative;
  z-index: 1;
}

.hero-copy {
  max-width: 920px;
}

.venue,
.section-heading p {
  margin: 0 0 14px;
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.section-heading p {
  margin-bottom: 16px;
  font-size: clamp(0.92rem, 1.1vw, 1.02rem);
  letter-spacing: 0.12em;
}

h1,
h2,
h3,
p {
  overflow-wrap: anywhere;
}

h1 {
  max-width: 980px;
  margin: 0;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(2.75rem, 5.8vw, 5.5rem);
  font-weight: 650;
  line-height: 1;
  letter-spacing: 0;
  background: linear-gradient(115deg, #0b1228 0%, #0866ff 42%, #7c3aed 78%, #00b8d9 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.subtitle {
  max-width: 720px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 2vw, 1.28rem);
  line-height: 1.75;
}

.author-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-top: 28px;
}

.author-list a {
  color: var(--teal-deep);
  font-weight: 750;
  text-decoration: underline;
  text-decoration-color: rgba(8, 102, 255, 0.24);
  text-underline-offset: 4px;
}

.author-list a.author-entry {
  position: relative;
  padding-right: 0.1em;
  text-decoration: none;
}

.author-name {
  text-decoration: underline;
  text-decoration-color: rgba(8, 102, 255, 0.24);
  text-underline-offset: 4px;
}

.author-note {
  color: #7f8794;
  font-size: 0.5em;
  font-style: italic;
  font-weight: 500;
  letter-spacing: 0;
  opacity: 0.68;
  position: relative;
  top: -0.45em;
  margin-left: 3px;
  text-decoration: none;
}

.affiliations {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  margin-top: 12px;
  color: var(--muted);
  font-size: 0.96rem;
}

.actions,
.paper-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.actions {
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  gap: 9px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #ffffff;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 800;
  padding: 12px 16px;
  transition:
    transform 160ms ease,
    border-color 160ms ease,
    background 160ms ease,
    box-shadow 160ms ease;
}

.button:hover {
  border-color: rgba(8, 102, 255, 0.36);
  box-shadow: 0 12px 28px rgba(8, 102, 255, 0.13);
  transform: translateY(-1px);
}

.button.primary {
  border-color: transparent;
  background: linear-gradient(135deg, #0866ff 0%, #5b5cff 48%, #7c3aed 100%);
  color: #fff;
}

.button:disabled,
.button[aria-disabled="true"] {
  cursor: default;
  opacity: 0.94;
}

.button:disabled:hover,
.button[aria-disabled="true"]:hover {
  border-color: transparent;
  box-shadow: none;
  transform: none;
}

.github-button {
  min-width: 170px;
}

.github-mark {
  fill: currentColor;
}

.button-label {
  display: inline-flex;
  align-items: baseline;
  gap: 5px;
  white-space: nowrap;
}

.button-label small {
  font-size: 0.72em;
  font-weight: 750;
  opacity: 0.82;
}

.email-button {
  text-align: center;
}

.button.compact {
  min-height: 40px;
  padding: 9px 12px;
}

.button svg {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.hero-figure {
  min-width: 0;
  margin: 0;
  border: 1px solid rgba(219, 228, 255, 0.95);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: var(--shadow);
  padding: clamp(18px, 3vw, 28px);
}

.hero-logo-panel {
  position: absolute;
  right: clamp(18px, 4.4vw, 68px);
  bottom: clamp(14px, 3vw, 44px);
  display: grid;
  place-items: center;
  width: clamp(180px, 31vw, 430px);
  border: 0;
  background: transparent;
  box-shadow: none;
  padding: 0;
  opacity: 0.88;
  pointer-events: none;
}

.hero-logo-panel::before {
  position: absolute;
  inset: 12% 6% 8%;
  z-index: -1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 46% 45%, rgba(255, 255, 255, 0.68), transparent 54%),
    radial-gradient(circle at 58% 58%, rgba(112, 225, 255, 0.18), transparent 68%),
    radial-gradient(circle at 38% 64%, rgba(244, 185, 91, 0.16), transparent 62%);
  content: "";
  filter: blur(12px);
}

.hero-logo-art {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter:
    drop-shadow(0 28px 46px rgba(8, 102, 255, 0.16))
    drop-shadow(0 10px 20px rgba(124, 58, 237, 0.1));
}

.figure-topline {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 750;
}

.pipeline {
  display: grid;
  grid-template-columns: 1fr 36px 1fr 36px 1fr;
  align-items: center;
  gap: 8px;
  margin: 30px 0;
}

.node {
  min-height: 118px;
  border: 1px solid var(--line);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px;
}

.source-node {
  background: #edf8ff;
}

.claim-node {
  background: #f1edff;
}

.score-node {
  background: #ecfbff;
}

.node-label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.node-value {
  color: var(--ink);
  font-size: clamp(1rem, 1.65vw, 1.22rem);
  font-weight: 850;
}

.flow-line {
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--coral), var(--teal));
  position: relative;
}

.flow-line::after {
  content: "";
  position: absolute;
  right: 0;
  top: 50%;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--coral);
  border-right: 2px solid var(--coral);
  transform: translateY(-50%) rotate(45deg);
}

.spline-trace {
  margin: -8px 0 22px;
  border: 1px solid rgba(219, 228, 255, 0.95);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(244, 185, 91, 0.15), rgba(8, 102, 255, 0.06)),
    #ffffff;
  padding: 12px 14px 10px;
}

.spline-trace svg {
  display: block;
  width: 100%;
  height: 82px;
}

.trace-shadow,
.trace-main {
  fill: none;
  stroke-linecap: round;
}

.trace-shadow {
  stroke: rgba(8, 102, 255, 0.14);
  stroke-width: 13;
}

.trace-main {
  stroke: url("#traceGold");
  stroke-width: 4;
}

.trace-points circle {
  fill: #ffffff;
  stroke: #f4b95b;
  stroke-width: 3;
}

.spline-trace span {
  display: block;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.map-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.cell {
  aspect-ratio: 1.8;
  border-radius: 8px;
  border: 1px solid rgba(219, 228, 255, 0.95);
}

.cell.strong {
  background: linear-gradient(135deg, #0866ff, #7c3aed);
}

.cell.medium {
  background: var(--coral);
}

.cell.low {
  background: #dff7ff;
}

figcaption {
  margin-top: 18px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.paper-image {
  display: block;
  width: 100%;
  max-height: 230px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  padding: 14px;
}

.method-paper-image {
  max-height: none;
  padding: 8px;
}

.metrics-band {
  position: relative;
  display: block;
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  background: linear-gradient(115deg, #1b3672 0%, #2360d6 50%, #6950d9 100%);
  color: #fff;
}

.metrics-band::before {
  content: "";
  position: absolute;
  inset: auto -6% -36% -6%;
  height: 72%;
  background:
    radial-gradient(70% 90% at 20% 100%, rgba(244, 185, 91, 0.22), transparent 62%),
    radial-gradient(70% 90% at 72% 100%, rgba(255, 230, 167, 0.14), transparent 66%);
  pointer-events: none;
}

.metrics-summary {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(260px, 1.15fr) minmax(220px, 1fr) minmax(240px, 1fr);
  max-width: 1680px;
  margin: 0 auto;
}

.metrics-summary article {
  position: relative;
  z-index: 1;
  min-height: 96px;
  padding: clamp(14px, 1.7vw, 20px) clamp(20px, 3.2vw, 42px);
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.metrics-summary article:last-child {
  border-right: 0;
}

.metric-theme {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.metric-stat {
  display: grid;
  grid-template-columns: minmax(92px, auto) minmax(0, 1fr);
  align-items: center;
  gap: 12px 18px;
}

.metric-stat + .metric-stat {
  border-top: 0;
}

.metric {
  display: block;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(2.2rem, 5vw, 4rem);
  font-weight: 650;
  line-height: 1;
}

.metric.word-metric {
  font-size: clamp(2rem, 4vw, 3.45rem);
}

.metric-stat .metric {
  font-size: clamp(2rem, 3.3vw, 3.35rem);
}

.label {
  display: block;
  margin-top: 10px;
  color: rgba(255, 255, 255, 0.76);
  font-weight: 650;
}

.metric-stat .label {
  margin-top: 0;
  max-width: 260px;
  line-height: 1.35;
}

.content-section {
  display: grid;
  grid-template-columns: minmax(330px, 0.44fr) minmax(0, 1fr);
  gap: clamp(28px, 6vw, 86px);
  padding: clamp(56px, 7vw, 88px) clamp(20px, 5vw, 76px);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.intro {
  position: relative;
  grid-template-columns: 1fr;
  gap: 24px;
  padding-top: clamp(38px, 5vw, 58px);
  padding-bottom: clamp(38px, 5vw, 58px);
  overflow: hidden;
  isolation: isolate;
  background:
    radial-gradient(90% 120% at 0% 100%, rgba(202, 189, 156, 0.13), transparent 64%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.98), rgba(240, 245, 255, 0.94));
}

.sand-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
  opacity: 1;
  filter: contrast(1.08) saturate(1.08);
  pointer-events: none;
  mix-blend-mode: normal;
}

.intro .section-heading,
.intro .section-body {
  position: relative;
  z-index: 2;
}

.intro .section-heading {
  max-width: none;
  text-align: center;
}

.intro .section-heading p {
  display: inline-flex;
  justify-content: center;
  margin: 0;
  font-size: clamp(1.18rem, 1.9vw, 1.48rem);
  letter-spacing: 0.18em;
}

.intro .section-body {
  display: block;
  max-width: 1120px;
  margin: 0 auto;
  font-size: clamp(0.94rem, 1.15vw, 1.04rem);
  line-height: 1.74;
}

.intro .section-body p {
  margin: 0;
}

.section-heading {
  max-width: 520px;
}

.section-heading h2 {
  margin: 0;
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(2rem, 4vw, 3.6rem);
  font-weight: 650;
  line-height: 1.05;
  overflow-wrap: normal;
  word-break: normal;
}

#method .section-heading h2 {
  font-size: clamp(1.62rem, 2.65vw, 2.45rem);
}

#method {
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 42px);
}

#method .section-heading {
  display: block;
  max-width: 1320px;
  width: 100%;
  margin: 0 auto;
  text-align: center;
}

#method .section-heading p {
  margin: 0 0 12px;
}

#method .method-body {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
}

#spline-why {
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 42px);
  background:
    radial-gradient(80% 120% at 100% 0%, rgba(124, 58, 237, 0.08), transparent 60%),
    radial-gradient(80% 120% at 0% 100%, rgba(112, 225, 255, 0.12), transparent 62%),
    linear-gradient(115deg, rgba(255, 255, 255, 0.96), rgba(239, 245, 255, 0.94));
}

#spline-why .section-heading {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

#spline-why .section-heading p {
  margin: 0 0 12px;
}

#videos,
#results,
#citation {
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 42px);
}

#videos .section-heading,
#results .section-heading,
#citation .section-heading {
  width: 100%;
  max-width: 960px;
  margin: 0 auto;
  text-align: center;
}

#videos .section-heading p,
#results .section-heading p,
#citation .section-heading p {
  margin: 0 0 12px;
}

#results .section-heading .results-highlight {
  display: inline-block;
  max-width: 820px;
  margin: 18px auto 0;
  padding: 10px 16px;
  border: 1px solid rgba(190, 210, 255, 0.88);
  border-radius: 999px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(239, 245, 255, 0.58)),
    rgba(255, 255, 255, 0.5);
  box-shadow: 0 16px 34px rgba(79, 70, 229, 0.08);
  color: transparent;
  font-size: clamp(0.92rem, 1.35vw, 1.08rem);
  font-weight: 850;
  letter-spacing: 0;
  line-height: 1.35;
  text-transform: none;
  background-clip: text, border-box;
  -webkit-background-clip: text, border-box;
  background-image:
    linear-gradient(90deg, #0866ff 0%, #6f3df4 55%, #12b8d8 100%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.72), rgba(239, 245, 255, 0.58));
}

#videos .video-grid,
#videos .video-stack,
#results .results-layout,
#citation .citation-box {
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
}

.spline-lab {
  display: grid;
  grid-template-columns: minmax(0, 1.58fr) minmax(300px, 0.58fr);
  align-items: start;
  gap: 18px;
  width: 100%;
  max-width: 1320px;
  margin: 0 auto;
  padding: 18px;
  border: 1px solid rgba(219, 228, 255, 0.86);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.76), rgba(235, 242, 255, 0.58)),
    rgba(255, 255, 255, 0.68);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.92),
    0 24px 70px rgba(8, 102, 255, 0.12);
  backdrop-filter: blur(20px) saturate(155%);
  -webkit-backdrop-filter: blur(20px) saturate(155%);
}

.spline-comparison-grid {
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  gap: 12px;
}

.spline-canvas-card {
  display: grid;
  grid-template-columns: minmax(210px, 0.28fr) minmax(0, 1fr);
  min-height: 0;
  overflow: hidden;
  border: 1px solid rgba(219, 228, 255, 0.92);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(246, 250, 255, 0.96), rgba(238, 245, 255, 0.86)),
    #ffffff;
}

.spline-card-topline {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 0;
  padding: 16px;
  border-right: 1px solid rgba(219, 228, 255, 0.82);
}

.spline-card-topline span {
  display: block;
  color: var(--ink);
  font-size: 0.94rem;
  font-weight: 850;
}

.spline-card-topline p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.42;
}

.spline-card-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-top: 18px;
}

.spline-card-metrics span {
  display: grid;
  gap: 5px;
  padding: 10px;
  border: 1px solid rgba(219, 228, 255, 0.82);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.58);
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.spline-card-metrics strong {
  color: var(--teal-deep);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.42rem;
  font-weight: 650;
  letter-spacing: 0;
  line-height: 1;
  text-transform: none;
}

[data-spline-panel="cubic"] .spline-card-metrics strong {
  color: #f43f5e;
}

[data-spline-panel="bspline"] .spline-card-metrics strong {
  color: #0891b2;
}

.spline-svg {
  display: block;
  width: 100%;
  height: clamp(210px, 22vw, 300px);
  min-height: 0;
  touch-action: none;
}

.spline-grid-bg {
  fill: rgba(244, 185, 91, 0.035);
}

.spline-grid-lines line {
  stroke: rgba(8, 102, 255, 0.08);
  stroke-width: 1;
}

.spline-obstacles .obstacle-shadow {
  fill: rgba(15, 23, 42, 0.12);
  filter: blur(0.8px);
}

.spline-obstacles .obstacle-side {
  fill: rgba(92, 105, 132, 0.24);
  stroke: rgba(66, 78, 103, 0.22);
  stroke-width: 1.2;
}

.spline-obstacles .obstacle-face {
  fill: rgba(248, 250, 255, 0.72);
  stroke: rgba(82, 94, 117, 0.28);
  stroke-width: 1.3;
  filter: drop-shadow(0 8px 12px rgba(35, 52, 87, 0.08));
}

.spline-obstacles .obstacle-ridge {
  fill: rgba(147, 163, 190, 0.1);
  stroke: rgba(255, 255, 255, 0.52);
  stroke-width: 1;
}

.spline-reference {
  fill: none;
  stroke: rgba(44, 54, 73, 0.46);
  stroke-width: 2.4;
  stroke-dasharray: 6 8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.near-horizon-region {
  fill: rgba(244, 185, 91, 0.1);
  stroke: rgba(244, 185, 91, 0.24);
  stroke-width: 1.2;
}

.near-horizon-glow {
  fill: none;
  stroke: rgba(244, 185, 91, 0.58);
  stroke-width: 15;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.5;
}

.spline-ghosts path {
  fill: none;
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.2;
}

.spline-ghosts .ghost-waypoints {
  stroke: #f59e0b;
  stroke-dasharray: 8 9;
}

.spline-ghosts .ghost-cubic {
  stroke: #fb7185;
}

.spline-ghosts .ghost-bspline {
  stroke: #06b6d4;
}

.control-polygon {
  fill: none;
  stroke: rgba(8, 102, 255, 0.32);
  stroke-width: 1.8;
  stroke-dasharray: 7 7;
  stroke-linecap: round;
  opacity: 0;
}

.control-polygon.is-visible {
  opacity: 1;
}

.main-curve {
  fill: none;
  stroke: #2563eb;
  stroke-width: 5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.main-curve.is-waypoints {
  stroke: #f59e0b;
  stroke-width: 4;
  stroke-dasharray: 10 9;
}

.main-curve.is-cubic {
  stroke: #fb7185;
}

.main-curve.is-bspline {
  stroke: #06b6d4;
}

.point-handle {
  fill: rgba(255, 255, 255, 0.92);
  stroke: #2563eb;
  stroke-width: 3;
  filter: drop-shadow(0 6px 10px rgba(8, 102, 255, 0.12));
}

.point-handle.is-distal {
  cursor: grab;
  stroke: #7c3aed;
}

.point-handle.is-distal:active {
  cursor: grabbing;
}

.point-handle.is-fixed {
  stroke: rgba(95, 107, 130, 0.46);
}

.point-handle.is-waypoint {
  fill: #fff7ed;
  stroke: #f59e0b;
}

.start-marker {
  fill: #111827;
  stroke: #ffffff;
  stroke-width: 3;
}

.goal-marker {
  fill: #f4b95b;
  stroke: #ffffff;
  stroke-width: 2.4;
  filter: drop-shadow(0 8px 14px rgba(244, 185, 91, 0.24));
}

.spline-panel {
  display: grid;
  grid-template-columns: 1fr;
  align-content: start;
  align-items: start;
  gap: 16px;
  min-width: 0;
  padding: clamp(16px, 2vw, 22px);
  border: 1px solid rgba(219, 228, 255, 0.9);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.88), rgba(244, 247, 255, 0.72)),
    rgba(255, 255, 255, 0.76);
}

.panel-eyebrow {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.spline-panel h3 {
  margin: 0;
  font-size: clamp(1.28rem, 2vw, 1.7rem);
  line-height: 1.1;
}

.spline-mode-description {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.62;
}

.spline-mode-description {
  min-height: 52px;
  margin: 0;
}

.spline-insight-card {
  padding: 12px 14px;
  border: 1px solid rgba(219, 228, 255, 0.78);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.74), rgba(241, 246, 255, 0.54)),
    rgba(255, 255, 255, 0.58);
}

.spline-insight-card p {
  margin: 0 0 8px;
  color: var(--charcoal);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1.25;
  text-transform: uppercase;
}

.spline-insight-card ul {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.36;
  list-style: none;
}

.spline-insight-card li {
  position: relative;
  padding-left: 13px;
}

.spline-insight-card li::before {
  position: absolute;
  top: 0.58em;
  left: 0;
  width: 5px;
  height: 5px;
  border-radius: 999px;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.12);
  content: "";
}

.spline-insight-card strong {
  color: var(--charcoal);
}

.spline-mode-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.spline-mode-list li {
  display: grid;
  gap: 4px;
  padding: 11px 12px;
  border: 1px solid rgba(219, 228, 255, 0.82);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.58);
}

.spline-mode-list strong {
  color: var(--ink);
  font-size: 0.88rem;
}

.spline-mode-list span {
  color: var(--muted);
  font-size: 0.78rem;
  line-height: 1.38;
}

.spline-mode-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
  padding: 5px;
  border: 1px solid rgba(219, 228, 255, 0.92);
  border-radius: 8px;
  background: rgba(239, 245, 255, 0.7);
}

.spline-mode-tabs button {
  min-height: 38px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: inherit;
  font-size: 0.82rem;
  font-weight: 800;
  line-height: 1.15;
  padding: 8px 9px;
  transition:
    background 160ms ease,
    color 160ms ease,
    box-shadow 160ms ease;
}

.spline-mode-tabs button.is-active {
  background: #ffffff;
  color: var(--teal-deep);
  box-shadow: 0 10px 24px rgba(8, 102, 255, 0.12);
}

.spline-actions {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 10px;
}

.button.ghost {
  background: rgba(255, 255, 255, 0.72);
}

.spline-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.spline-metrics article {
  min-height: 86px;
  padding: 14px;
  border: 1px solid rgba(219, 228, 255, 0.92);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.92), rgba(239, 245, 255, 0.74));
}

.spline-metrics span {
  display: block;
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
  line-height: 1.28;
}

.spline-metrics strong {
  display: block;
  margin-top: 12px;
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(1.7rem, 3vw, 2.3rem);
  font-weight: 650;
  line-height: 1;
}

.spline-metric-table {
  display: grid;
  overflow: hidden;
  border: 1px solid rgba(219, 228, 255, 0.92);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
}

.metric-table-head,
.spline-metric-table article {
  display: grid;
  grid-template-columns: minmax(96px, 1fr) 78px 78px;
  align-items: center;
  gap: 8px;
}

.metric-table-head {
  padding: 10px 12px;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.spline-metric-table article {
  padding: 11px 12px;
  border-top: 1px solid rgba(219, 228, 255, 0.78);
}

.spline-metric-table article > span {
  color: var(--ink);
  font-size: 0.82rem;
  font-weight: 850;
}

.spline-metric-table strong {
  color: var(--teal-deep);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: 1.28rem;
  font-weight: 650;
  line-height: 1;
}

.spline-metric-table [data-metric-row="cubic"] strong {
  color: #f43f5e;
}

.spline-metric-table [data-metric-row="bspline"] strong {
  color: #0891b2;
}

.spline-mini-chart {
  padding: 12px 12px 14px;
  border: 1px solid rgba(219, 228, 255, 0.78);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.58);
}

.spline-mini-chart .mini-chart-labels,
.spline-mini-chart .horizon-zoom-labels {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 800;
  text-transform: uppercase;
}

.spline-mini-chart svg {
  display: block;
  width: 100%;
}

.mini-chart-full {
  height: 76px;
}

.horizon-zoom-labels {
  margin-top: 8px;
}

.mini-chart-zoom {
  height: 70px;
}

.mini-chart-near-region {
  fill: rgba(244, 185, 91, 0.08);
  stroke: rgba(244, 185, 91, 0.18);
  stroke-width: 1;
}

.mini-chart-line {
  fill: none;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.chart-waypoints {
  stroke: #f59e0b;
  stroke-dasharray: 5 5;
}

.chart-cubic {
  stroke: #fb7185;
}

.chart-bspline {
  stroke: #06b6d4;
}

.mini-chart-horizon {
  stroke: rgba(244, 185, 91, 0.62);
  stroke-width: 2;
  stroke-dasharray: 4 5;
}

.mini-chart-bracket {
  fill: none;
  stroke: rgba(244, 185, 91, 0.48);
  stroke-width: 1.8;
  stroke-linecap: round;
}

.spline-metric-note,
.spline-drag-guide {
  border: 1px solid rgba(219, 228, 255, 0.78);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.56);
}

.spline-metric-note {
  padding: 12px 14px;
  color: var(--muted);
  font-size: 0.82rem;
  line-height: 1.45;
}

.spline-metric-note p {
  margin: 0;
}

.spline-metric-note p + p {
  margin-top: 6px;
}

.spline-metric-note strong {
  color: var(--charcoal);
}

.spline-drag-guide {
  display: grid;
  gap: 10px;
  padding: 12px 14px;
}

.drag-guide-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #4f46e5;
  font-weight: 850;
  letter-spacing: 0.01em;
}

.drag-guide-title span {
  font-size: 1rem;
  line-height: 1;
}

.drag-guide-row {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 650;
}

.legend-node {
  width: 16px;
  height: 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 5px 12px rgba(8, 102, 255, 0.12);
}

.legend-node.is-draggable {
  border: 3px solid #7c3aed;
}

.section-body {
  max-width: 900px;
  color: var(--charcoal);
  font-size: clamp(1.03rem, 1.8vw, 1.18rem);
  line-height: 1.84;
}

.section-body p {
  margin: 0 0 18px;
}

.citation-box,
.chart-panel,
.video-card,
.method-figure,
.method-grid article,
.result-notes article {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.method-grid h3,
.result-notes h3 {
  margin: 0;
  font-size: 1.12rem;
}

.method-grid p,
.result-notes p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.method-body {
  display: grid;
  gap: 16px;
}

.method-figure {
  margin: 0;
  padding: clamp(10px, 1.6vw, 16px);
  box-shadow: 0 18px 42px rgba(8, 102, 255, 0.08);
}

.method-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}

.method-grid article {
  min-height: 136px;
  padding: 16px;
}

.step {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 18px;
  border-radius: 8px;
  background: var(--wash);
  color: var(--teal-deep);
  font-weight: 850;
}

.results-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(250px, 0.58fr);
  gap: 18px;
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.video-stack {
  display: grid;
  gap: 18px;
}

.demo-gallery {
  padding: clamp(18px, 3vw, 28px);
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.86), rgba(237, 244, 255, 0.66)),
    var(--panel);
  box-shadow: 0 18px 42px rgba(8, 102, 255, 0.08);
}

.demo-gallery-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.demo-gallery-header p {
  margin: 0 0 7px;
  color: var(--teal-deep);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.demo-gallery-header h3 {
  margin: 0;
  color: var(--ink);
  font-family: "Source Serif 4", Georgia, serif;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.06;
}

.demo-gallery-meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
}

.demo-gallery-meta span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid rgba(219, 228, 255, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.demo-gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.demo-card {
  overflow: hidden;
  border: 1px solid rgba(219, 228, 255, 0.92);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.78);
  box-shadow: 0 12px 28px rgba(8, 102, 255, 0.07);
  transition: transform 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

.demo-card:hover {
  border-color: rgba(8, 102, 255, 0.34);
  box-shadow: 0 18px 36px rgba(8, 102, 255, 0.12);
  transform: translateY(-2px);
}

.demo-video-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9.6;
  background:
    linear-gradient(135deg, rgba(8, 102, 255, 0.12), rgba(124, 58, 237, 0.1)),
    var(--wash);
}

.demo-video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.demo-tag {
  position: absolute;
  left: 10px;
  top: 10px;
  z-index: 1;
  padding: 4px 8px;
  border: 1px solid rgba(255, 255, 255, 0.76);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(8, 102, 255, 0.82), rgba(124, 58, 237, 0.82));
  color: #fff;
  font-size: 0.64rem;
  font-weight: 900;
  letter-spacing: 0.08em;
}

.real-world-gallery {
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(236, 246, 255, 0.72)),
    var(--panel);
}

.real-feature-card {
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(260px, 0.58fr);
  gap: 18px;
  align-items: stretch;
}

.real-feature-video {
  position: relative;
  overflow: hidden;
  min-height: 260px;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(190, 210, 255, 0.95);
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 255, 255, 0.72), rgba(220, 236, 255, 0.5) 48%, rgba(205, 224, 255, 0.64)),
    linear-gradient(135deg, rgba(8, 102, 255, 0.1), rgba(18, 185, 207, 0.08));
  box-shadow: 0 16px 32px rgba(8, 102, 255, 0.08);
}

.real-feature-video .demo-video {
  object-fit: contain;
}

.real-tag {
  background: linear-gradient(135deg, rgba(20, 184, 166, 0.88), rgba(8, 102, 255, 0.84));
}

.real-feature-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 260px;
  padding: clamp(18px, 2.4vw, 28px);
  border: 1px solid rgba(219, 228, 255, 0.9);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.84), rgba(240, 247, 255, 0.72)),
    rgba(255, 255, 255, 0.72);
}

.real-feature-copy > p:first-child {
  margin: 0 0 8px;
  color: var(--teal-deep);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.real-feature-copy h4 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  line-height: 1.08;
}

.real-feature-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 18px 0;
}

.real-feature-chips span,
.real-theme-preview span {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 6px 10px;
  border: 1px solid rgba(190, 210, 255, 0.9);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 850;
}

.real-feature-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.55;
}

.real-theme-preview {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid rgba(219, 228, 255, 0.75);
}

.real-theme-preview span:first-child {
  border-color: rgba(8, 102, 255, 0.24);
  background: linear-gradient(135deg, rgba(8, 102, 255, 0.12), rgba(124, 58, 237, 0.1));
  color: var(--blue);
}

.real-theme-groups {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(219, 228, 255, 0.75);
}

.real-theme-group {
  display: grid;
  gap: 12px;
  align-content: start;
  padding: 14px;
  border: 1px solid rgba(219, 228, 255, 0.9);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.78), rgba(238, 247, 255, 0.62)),
    rgba(255, 255, 255, 0.7);
}

.real-theme-group.is-wide {
  grid-column: span 12;
}

.real-theme-group.is-medium {
  grid-column: span 8;
}

.real-theme-group.is-half {
  grid-column: span 6;
}

.real-theme-group.is-compact {
  grid-column: span 4;
}

.real-theme-head {
  display: flex;
  min-height: 34px;
  align-items: flex-start;
  justify-content: flex-start;
  gap: 12px;
}

.real-theme-head p {
  margin: 0;
  color: var(--teal-deep);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.real-theme-head h4 {
  margin: 0;
  color: var(--teal-deep);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-align: left;
  text-transform: uppercase;
}

.real-theme-video-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.real-theme-group.is-medium .real-theme-video-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.real-theme-group.is-compact .real-theme-video-grid {
  grid-template-columns: minmax(0, 1fr);
}

.real-theme-group.is-half .real-theme-video-grid {
  grid-template-columns: minmax(0, 1fr);
}

.real-mini-video-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(190, 210, 255, 0.9);
  border-radius: 8px;
  background:
    radial-gradient(circle at 50% 48%, rgba(255, 255, 255, 0.74), rgba(224, 238, 255, 0.48) 52%, rgba(211, 228, 255, 0.64)),
    linear-gradient(135deg, rgba(8, 102, 255, 0.08), rgba(124, 58, 237, 0.07));
  box-shadow: 0 10px 22px rgba(8, 102, 255, 0.06);
}

.real-mini-video-frame .demo-video {
  object-fit: contain;
}

.demo-gallery.is-empty {
  padding-block: 18px;
}

.demo-empty {
  display: flex;
  min-height: 76px;
  align-items: center;
  justify-content: center;
  border: 1px dashed rgba(8, 102, 255, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.48);
  color: var(--muted);
  font-weight: 750;
  text-align: center;
}

.video-card {
  overflow: hidden;
  box-shadow: 0 18px 42px rgba(8, 102, 255, 0.08);
}

.video-frame {
  position: relative;
  display: grid;
  min-height: 260px;
  aspect-ratio: 16 / 10;
  place-items: center;
  overflow: hidden;
  background:
    linear-gradient(135deg, rgba(8, 102, 255, 0.16), rgba(124, 58, 237, 0.16)),
    var(--wash);
}

.video-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.02);
}

.video-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(16, 26, 58, 0.02), rgba(16, 26, 58, 0.22));
}

.play-badge {
  position: absolute;
  z-index: 1;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.78);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(8, 102, 255, 0.9), rgba(124, 58, 237, 0.9));
  box-shadow: 0 18px 42px rgba(16, 26, 58, 0.28);
  color: #fff;
}

.play-badge svg {
  width: 24px;
  height: 24px;
  margin-left: 3px;
}

.video-copy {
  padding: 22px;
}

.video-copy p {
  margin: 0 0 8px;
  color: var(--teal-deep);
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.video-copy h3 {
  margin: 0;
}

.video-copy span {
  display: block;
  margin-top: 10px;
  color: var(--muted);
  line-height: 1.6;
}

.chart-panel {
  display: grid;
  gap: 18px;
  padding: clamp(22px, 4vw, 34px);
}

.results-benchmark-card {
  grid-template-columns: minmax(330px, 0.9fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(18px, 3vw, 28px);
}

.benchmark-scenes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-content: center;
  gap: 12px;
}

.scene-card {
  overflow: hidden;
  border: 1px solid rgba(219, 228, 255, 0.92);
  border-radius: 8px;
  background:
    linear-gradient(145deg, rgba(255, 255, 255, 0.86), rgba(240, 247, 255, 0.68)),
    #ffffff;
  box-shadow: 0 14px 32px rgba(8, 102, 255, 0.08);
}

.scene-thumb {
  min-height: 0;
  aspect-ratio: 4 / 3;
  border-bottom: 1px solid rgba(219, 228, 255, 0.82);
  background-image: url("./assets/paper-benchmark.png");
  background-repeat: no-repeat;
  background-size: 205% auto;
  filter: saturate(1.02) contrast(1.02);
}

.scene-clutter {
  background-position: 0% 50%;
}

.scene-intern {
  background-position: 100% 50%;
}

.scene-card div:last-child {
  padding: 11px 12px 12px;
}

.scene-card span {
  display: block;
  color: var(--ink);
  font-size: 0.86rem;
  font-weight: 850;
}

.scene-card p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 0.76rem;
  line-height: 1.36;
}

.benchmark-cite {
  display: inline-flex;
  grid-column: 1 / -1;
  align-items: center;
  justify-content: center;
  min-height: 36px;
  padding: 8px 10px;
  border: 1px solid rgba(219, 228, 255, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
  color: var(--teal-deep);
  font-size: 0.74rem;
  font-weight: 850;
  line-height: 1.25;
}

.benchmark-reference {
  grid-column: 1 / -1;
  margin: -2px 0 0;
  padding: 10px 12px;
  border: 1px solid rgba(219, 228, 255, 0.78);
  border-left: 3px solid rgba(17, 185, 214, 0.56);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.54);
  color: var(--muted);
  font-size: 0.66rem;
  font-style: italic;
  line-height: 1.45;
}

.metric-bars {
  display: grid;
  align-content: center;
  gap: 32px;
  min-width: 0;
}

.bar-row {
  display: grid;
  grid-template-columns: 120px minmax(0, 1fr) 50px;
  align-items: center;
  gap: 14px;
  color: var(--muted);
  font-weight: 750;
}

.bar-row strong {
  color: var(--ink);
  text-align: right;
}

.bar-track {
  height: 18px;
  overflow: hidden;
  border-radius: 8px;
  background: var(--wash);
}

.bar {
  display: block;
  height: 100%;
  border-radius: 8px;
}

.bar.clutter {
  width: 90.1%;
  background: linear-gradient(90deg, #0866ff 0%, #2f7dff 45%, #7c3aed 100%);
  box-shadow: 0 0 18px rgba(8, 102, 255, 0.18);
}

.bar.indoor {
  width: 72%;
  background: #00b8d9;
}

.bar.scale {
  width: 0.25%;
  min-width: 18px;
  background: linear-gradient(90deg, #0866ff, #7c3aed);
}

.result-notes {
  display: grid;
  align-content: start;
  gap: 18px;
}

.result-notes article {
  padding: 22px;
}

.citation-box {
  position: relative;
  overflow: hidden;
  padding: clamp(18px, 4vw, 28px);
}

pre {
  margin: 0;
  overflow-x: auto;
  color: #172033;
  font-size: 0.94rem;
  line-height: 1.62;
}

code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.citation-box .button {
  position: absolute;
  right: 18px;
  top: 18px;
}

footer {
  padding: 28px clamp(20px, 5vw, 76px);
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-header.is-condensed {
    width: min(820px, calc(100% - 24px));
    padding: 12px 14px;
  }

  nav {
    width: 100%;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .content-section,
  .video-grid,
  .demo-gallery-grid,
  .results-layout,
  .results-benchmark-card,
  .spline-lab {
    grid-template-columns: 1fr;
  }

  .demo-gallery-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .demo-gallery-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .demo-gallery-meta {
    justify-content: flex-start;
  }

  .real-feature-card {
    grid-template-columns: 1fr;
  }

  .real-theme-groups {
    grid-template-columns: 1fr;
  }

  .real-theme-group,
  .real-theme-group.is-wide,
  .real-theme-group.is-medium,
  .real-theme-group.is-half,
  .real-theme-group.is-compact {
    grid-column: 1 / -1;
  }

  .real-feature-copy,
  .real-feature-video {
    min-height: 0;
  }

  .benchmark-scenes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .metric-bars {
    gap: 18px;
  }

  .spline-svg,
  .spline-canvas-card {
    min-height: 0;
  }

  .spline-svg {
    min-height: 0;
  }

  .hero {
    min-height: auto;
  }

  .hero-figure {
    max-width: 720px;
  }

  .hero-logo-panel {
    width: clamp(180px, 31vw, 380px);
  }

  .content-section,
  .method-grid {
    grid-template-columns: 1fr;
  }

  .metrics-summary {
    grid-template-columns: minmax(220px, 1.1fr) repeat(2, minmax(180px, 1fr));
  }
}

@media (max-width: 640px) {
  .site-header {
    padding: 14px 16px;
  }

  .site-header.is-condensed {
    width: calc(100% - 16px);
    transform: translateY(8px);
  }

  nav a {
    padding: 9px 10px;
  }

  .brand {
    font-size: 0.95rem;
  }

  .hero,
  .content-section {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-logo-panel {
    width: clamp(150px, 34vw, 260px);
    opacity: 0.62;
  }

  .actions,
  .paper-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .github-button {
    min-width: 0;
  }

  .button {
    width: 100%;
  }

  .benchmark-scenes {
    grid-template-columns: 1fr;
  }

  .demo-gallery-grid {
    grid-template-columns: 1fr;
  }

  .real-theme-video-grid,
  .real-theme-group.is-medium .real-theme-video-grid,
  .real-theme-group.is-half .real-theme-video-grid,
  .real-theme-group.is-compact .real-theme-video-grid {
    grid-template-columns: 1fr;
  }

  .real-theme-head {
    flex-direction: column;
  }

  .real-theme-head h4 {
    max-width: none;
    text-align: left;
  }

  .spline-mode-tabs,
  .spline-actions,
  .spline-metrics {
    grid-template-columns: 1fr;
  }

  .spline-comparison-grid {
    grid-template-columns: 1fr;
  }

  .spline-card-topline {
    min-height: auto;
  }

  .spline-canvas-card {
    grid-template-columns: 1fr;
  }

  .spline-card-topline {
    border-right: 0;
    border-bottom: 1px solid rgba(219, 228, 255, 0.82);
  }

  .figure-topline {
    flex-direction: column;
  }

  .pipeline {
    grid-template-columns: 1fr;
  }

  .flow-line {
    width: 2px;
    height: 30px;
    justify-self: center;
    background: linear-gradient(180deg, transparent, var(--teal-deep), transparent);
  }

  .flow-line::after {
    right: auto;
    left: 50%;
    top: auto;
    bottom: 0;
    transform: translateX(-50%) rotate(135deg);
  }

  .map-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .method-grid {
    grid-template-columns: 1fr;
  }

  .metrics-summary {
    grid-template-columns: 1fr;
  }

  .metric-theme {
    border-right: 0;
  }

  .metric-stat {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .metrics-summary article {
    border-bottom: 1px solid rgba(255, 255, 255, 0.14);
    border-right: 0;
  }

  .metrics-summary article:last-child {
    border-bottom: 0;
  }

  .bar-row {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .bar-row strong {
    text-align: left;
  }

  .citation-box {
    padding-top: 74px;
  }
}