:root {
  --bg0: #fbf7ef;
  --bg1: #f3efe6;
  --paper: rgba(255, 255, 255, 0.72);
  --card: rgba(255, 255, 255, 0.88);
  --ink: #141821;
  --muted: #4b5563;
  --border: rgba(20, 24, 33, 0.12);
  --shadow: 0 14px 34px rgba(20, 24, 33, 0.10);
  --shadowSoft: 0 8px 18px rgba(20, 24, 33, 0.06);
  --accent: #1e40af;
  --accent2: #0f766e;
  --accentSoft: rgba(30, 64, 175, 0.12);
  --radius: 16px;
  --radiusSm: 12px;
  --max: 1120px;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  width: 100%;
  overflow-x: hidden;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(1200px 800px at 12% 10%, rgba(30, 64, 175, 0.12), transparent 60%),
    radial-gradient(900px 700px at 80% 18%, rgba(15, 118, 110, 0.10), transparent 55%),
    radial-gradient(1200px 900px at 70% 90%, rgba(30, 64, 175, 0.09), transparent 60%),
    linear-gradient(180deg, var(--bg0), var(--bg1));
  font-family: "Avenir Next", Avenir, "Gill Sans", "Helvetica Neue", Helvetica, sans-serif;
  line-height: 1.55;
  letter-spacing: 0.01em;
}

img,
video {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

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

.container {
  width: min(var(--max), calc(100% - 24px));
  margin: 0 auto;
}

.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  padding: 10px 12px;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  z-index: 1000;
}

.skip:focus {
  left: 12px;
}

.top {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 247, 239, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(20, 24, 33, 0.08);
}

.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--paper);
  color: rgba(20, 24, 33, 0.80);
  font-size: 13px;
}

.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 14px;
}

.nav a {
  padding: 6px 10px;
  border-radius: 999px;
  color: rgba(20, 24, 33, 0.82);
}

.nav a:hover {
  background: rgba(255, 255, 255, 0.55);
  text-decoration: none;
}

.hero {
  padding: 20px 0 8px 0;
  min-height: calc(100svh - 76px);
  display: flex;
  align-items: center;
}

.hero-title-wrap {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
}

.hero-title {
  margin: 0;
  max-width: 26ch;
}

.hero-subline {
  margin: 14px 0 0 0;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(20, 24, 33, 0.72);
}

.hero-resource-row {
  margin-top: 22px;
  width: min(760px, 100%);
}

h1,
h2,
h3 {
  font-family: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua", serif;
  letter-spacing: 0.01em;
  margin: 0 0 12px 0;
}

h1 {
  font-size: clamp(24px, 3vw, 38px);
  line-height: 1.12;
}

h2 {
  font-size: 24px;
  line-height: 1.18;
}

h3 {
  font-size: 17px;
  line-height: 1.18;
}

.smallcaps {
  font-variant-caps: all-small-caps;
  letter-spacing: 0.06em;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.70);
  color: rgba(20, 24, 33, 0.90);
  font-size: 14px;
  box-shadow: 0 10px 22px rgba(20, 24, 33, 0.06);
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-1px);
  transition: transform 120ms ease;
}

.btn.primary {
  border-color: rgba(30, 64, 175, 0.28);
  background: linear-gradient(180deg, rgba(30, 64, 175, 0.95), rgba(30, 64, 175, 0.86));
  color: white;
}

.btn.ghost {
  opacity: 0.70;
}

.btn.small {
  padding: 8px 10px;
  font-size: 13px;
}

.section {
  padding: 28px 0;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.section-head p {
  margin: 0;
  max-width: 78ch;
}

.muted {
  color: rgba(75, 85, 99, 0.96);
}

.card {
  padding: 16px 16px 14px 16px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadowSoft);
}

.card + .card {
  margin-top: 14px;
}

.split > .card + .card,
.grid-3 > .card + .card,
.showcase-grid > .media-card + .media-card {
  margin-top: 0;
}

.split {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  align-items: start;
}

.method-split {
  align-items: stretch;
}

.method-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 0;
  overflow: hidden;
  justify-content: flex-start;
}

.method-card h3 {
  min-height: 2.5em;
}

.method-desc {
  min-height: 3.4em;
}

.media-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.video-groups {
  display: grid;
  gap: 22px;
}

.video-group {
  padding: 18px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(20, 24, 33, 0.10);
  border-radius: calc(var(--radius) + 4px);
  box-shadow: var(--shadowSoft);
}

.group-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.group-head p {
  margin: 0;
  max-width: 68ch;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  margin-bottom: 8px;
  padding: 0;
  border-radius: 0;
  background: transparent;
  border: 0;
  color: rgba(20, 24, 33, 0.62);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.demo-showcase {
  background:
    radial-gradient(circle at top left, rgba(217, 119, 6, 0.07), transparent 28%),
    radial-gradient(circle at top right, rgba(11, 93, 63, 0.08), transparent 32%),
    rgba(255, 255, 255, 0.66);
}

.demo-showcase-head {
  align-items: end;
  justify-content: flex-start;
  margin-bottom: 2px;
}

.demo-showcase-head h3 {
  margin-bottom: 0;
  font-size: clamp(28px, 3vw, 42px);
  line-height: 1.05;
}

.showcase-grid {
  display: grid;
  gap: 14px;
}

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

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

.showcase-grid-first-row {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-bottom: 14px;
}

.comparison-pairs {
  display: grid;
  gap: 22px;
}

.comparison-pair {
  position: relative;
  padding: 12px;
  border: 1px solid rgba(20, 24, 33, 0.10);
  border-radius: calc(var(--radius) + 2px);
  background: rgba(255, 255, 255, 0.48);
}

.comparison-row-head {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.comparison-row-head::before,
.comparison-row-head::after {
  content: "";
  height: 1px;
  background: linear-gradient(90deg, rgba(20, 24, 33, 0.06), rgba(20, 24, 33, 0.18));
}

.comparison-case {
  position: absolute;
  left: 16px;
  top: 12px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(20, 24, 33, 0.58);
}

.comparison-vs {
  justify-self: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 30px;
  padding: 0 10px;
  border-radius: 999px;
  border: 1px solid rgba(20, 24, 33, 0.12);
  background: rgba(255, 255, 255, 0.88);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(20, 24, 33, 0.72);
  box-shadow: var(--shadowSoft);
}

.comparison-row {
  align-items: stretch;
}

.comparison-card {
  padding-top: 14px;
}

.comparison-card video {
  aspect-ratio: 4 / 3;
  min-height: 340px;
  object-fit: cover;
}

.comparison-pair-gain {
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.66), rgba(255, 255, 255, 0.46));
}

.comparison-card-base {
  border-color: rgba(180, 83, 9, 0.18);
}

.comparison-card-post {
  border-color: rgba(21, 128, 61, 0.30);
  background:
    linear-gradient(180deg, rgba(236, 253, 245, 0.98), rgba(255, 255, 255, 0.96));
  box-shadow: 0 18px 44px rgba(21, 128, 61, 0.12);
}

.gain-note {
  display: none;
  margin-top: 8px;
  width: fit-content;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(21, 128, 61, 0.10);
  color: #166534;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.comparison-badge {
  display: none;
}

.comparison-badge-left {
  left: 12px;
  background: linear-gradient(180deg, #b45309, #92400e);
}

.comparison-badge-right {
  right: 12px;
  background: linear-gradient(180deg, #15803d, #166534);
}

.comparison-first-row .media-card {
  padding: 10px;
}

.comparison-first-row .media-card video {
  aspect-ratio: 4 / 3;
  min-height: 360px;
  object-fit: cover;
}

.media-card {
  position: relative;
  overflow: hidden;
  padding: 14px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadowSoft);
  max-width: 1120px;
  margin: 0 auto;
}

.media-card-compact {
  padding: 8px;
}

.media-card-compact video {
  aspect-ratio: 1 / 1;
  min-height: 320px;
  object-fit: cover;
}

.media-card-featured {
  padding-top: 42px;
  border-color: var(--border);
  background: var(--card);
  box-shadow: var(--shadowSoft);
}

.media-card-featured video {
  min-height: 360px;
  border-radius: calc(var(--radius) - 6px);
}

.demo-badge {
  display: none;
}

.demo-reel-card {
  position: relative;
  width: min(1640px, calc(100vw - 16px));
  margin-left: 50%;
  transform: translateX(-50%);
  padding: 8px;
  border-radius: 28px;
  border: 1px solid rgba(20, 24, 33, 0.16);
  background:
    radial-gradient(circle at top left, rgba(30, 64, 175, 0.14), transparent 35%),
    radial-gradient(circle at top right, rgba(15, 118, 110, 0.14), transparent 42%),
    linear-gradient(135deg, rgba(11, 18, 32, 0.96), rgba(20, 29, 46, 0.98));
  box-shadow: 0 30px 70px rgba(20, 24, 33, 0.24);
  overflow: hidden;
}

.media-card.demo-reel-card video {
  width: 100%;
  height: min(72svh, calc(100svh - 180px), 860px);
  min-height: 0;
  max-height: calc(100svh - 180px);
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-radius: 20px;
  background: #020617;
}

.demo-reel-card::before {
  content: "";
  position: absolute;
  inset: 8px;
  border-radius: 20px;
  pointer-events: none;
  z-index: 1;
  box-shadow:
    inset 180px 0 110px -85px rgba(2, 6, 23, 0.34),
    inset -180px 0 110px -85px rgba(2, 6, 23, 0.34);
}

.demo-reel-actions {
  position: absolute;
  right: 24px;
  bottom: 24px;
  margin-top: 0;
  display: flex;
  justify-content: flex-end;
  z-index: 2;
}

.demo-reel-fullscreen {
  min-width: 148px;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  backdrop-filter: blur(10px);
  box-shadow: 0 14px 32px rgba(20, 24, 33, 0.28);
}

.comparison-card figcaption strong {
  font-size: 20px;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.comparison-card figcaption .muted {
  font-size: 16px;
  line-height: 1.45;
}

.comparison-card-post figcaption strong {
  color: #0f5132;
  font-weight: 900;
}

.comparison-card-post figcaption .muted {
  color: rgba(20, 24, 33, 0.82);
  font-weight: 600;
}

.media-card video {
  width: 100%;
  aspect-ratio: 16 / 10;
  min-height: 260px;
  max-height: min(56vh, 480px);
  object-fit: contain;
  border-radius: var(--radiusSm);
  background: rgba(255, 255, 255, 0.92);
}

.missing-hint {
  display: none;
  position: absolute;
  inset: 12px 12px auto 12px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid rgba(20, 24, 33, 0.16);
  background: rgba(255, 255, 255, 0.92);
  color: rgba(20, 24, 33, 0.82);
  font-size: 13px;
}

.media-card.is-missing .missing-hint {
  display: inline-flex;
}

.media-card figcaption {
  margin-top: 10px;
  display: grid;
  gap: 2px;
}

.details {
  margin-top: 12px;
  border: 1px dashed rgba(20, 24, 33, 0.18);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.50);
  padding: 10px 12px;
}

.details summary {
  cursor: pointer;
  color: rgba(20, 24, 33, 0.84);
  font-weight: 600;
}

.details-body {
  margin-top: 10px;
  color: rgba(20, 24, 33, 0.82);
}

.details pre {
  background: rgba(20, 24, 33, 0.06);
  border: 1px solid rgba(20, 24, 33, 0.10);
  border-radius: var(--radiusSm);
  padding: 10px;
  overflow: auto;
}

.table-wrap {
  overflow-x: hidden;
  overflow-y: visible;
  border: 1px solid rgba(20, 24, 33, 0.10);
  border-radius: var(--radiusSm);
  background: rgba(255, 255, 255, 0.70);
}

.table-wrap.small {
  font-size: 13px;
}

.metric-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 0;
  table-layout: auto;
  font-size: 12.5px;
}

.metric-table thead th {
  text-align: center;
  font-size: 12px;
  font-weight: 700;
  padding: 7px 8px;
  background: rgba(30, 64, 175, 0.06);
  border-bottom: 1px solid rgba(20, 24, 33, 0.10);
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

.metric-table tbody td {
  padding: 6px 8px;
  border-bottom: 1px solid rgba(20, 24, 33, 0.08);
  vertical-align: middle;
  white-space: nowrap;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
}

.metric-table th:first-child,
.metric-table td:first-child {
  text-align: left;
  white-space: normal;
  overflow-wrap: normal;
  word-break: normal;
  hyphens: none;
  width: 28%;
}

.metric-table th:not(:first-child),
.metric-table td:not(:first-child) {
  text-align: center;
}

.metric-table tbody tr:hover {
  background: rgba(255, 255, 255, 0.75);
}

.metric-table tbody tr.emph {
  background: var(--accentSoft);
}

.caption {
  margin: 10px 0 0 0;
  font-size: 13px;
}

.qualitative-caption {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 500;
}

.results-split {
  align-items: stretch;
  margin-top: 18px;
}

.result-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 0;
  padding-top: 20px;
  padding-bottom: 20px;
}

.result-card h3 {
  margin-bottom: 20px;
}

.stability-card .img-pair {
  flex: 1;
  align-items: stretch;
  gap: 16px;
}

.stability-card .img-pair figure {
  margin: 0;
  display: flex;
  flex-direction: column;
}

.stability-card .img-pair figcaption {
  margin-top: 10px;
  text-align: center;
}

.img-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.img-pair img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  border-radius: var(--radiusSm);
  border: 1px solid rgba(20, 24, 33, 0.12);
}

.method-fig {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: min(52vh, 360px);
  object-fit: contain;
  background: rgba(255, 255, 255, 0.65);
  border-radius: var(--radiusSm);
}

.result-fig {
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: min(52vh, 360px);
  object-fit: contain;
  background: rgba(255, 255, 255, 0.65);
  border-radius: var(--radiusSm);
}

.qualitative-card .result-fig {
  max-height: min(68vh, 520px);
}

.stability-fig {
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 220px;
  object-fit: cover;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 16px;
}

.resource-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.resource {
  padding: 14px 14px 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.70);
  box-shadow: var(--shadowSoft);
  display: grid;
  gap: 4px;
  color: rgba(20, 24, 33, 0.90);
  min-height: 88px;
}

.resource:hover {
  text-decoration: none;
  transform: translateY(-1px);
  transition: transform 120ms ease;
}

.resource-primary {
  border-color: rgba(30, 64, 175, 0.18);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(243, 247, 255, 0.92)),
    rgba(255, 255, 255, 0.86);
  box-shadow: 0 16px 30px rgba(30, 64, 175, 0.10);
}

.resource-primary .kicker {
  color: var(--accent);
}

.resource.disabled {
  opacity: 0.55;
  user-select: none;
}

.kicker {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(75, 85, 99, 0.94);
}

.title {
  font-size: 16px;
  font-weight: 700;
}

.bib pre {
  margin: 0;
  border-radius: var(--radiusSm);
  border: 1px solid rgba(20, 24, 33, 0.10);
  background: rgba(20, 24, 33, 0.06);
  padding: 12px;
  overflow: auto;
}

.bib {
  display: grid;
  gap: 10px;
}

.footer {
  padding: 30px 0 40px 0;
  border-top: 1px solid rgba(20, 24, 33, 0.08);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.30));
}

/* Reveal animation. Keep content visible by default in case JS fails. */
.reveal {
  opacity: 1;
  transform: none;
}

html.js .reveal {
  opacity: 1;
  transform: none;
}

html.js .reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 420ms ease, transform 420ms ease;
}

@media (prefers-reduced-motion: reduce) {
  .btn:hover,
  .resource:hover {
    transform: none;
    transition: none;
  }
  .reveal,
  .reveal.is-visible,
  html.js .reveal,
  html.js .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

@media (max-width: 980px) {
  .group-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .split {
    grid-template-columns: 1fr;
  }
  .media-grid {
    grid-template-columns: 1fr;
  }
  .showcase-grid-3 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .showcase-grid-first-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .resource-row {
    grid-template-columns: 1fr;
  }
  .section-head {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
  }
  .demo-reel-card {
    width: 100%;
    margin-left: 0;
    transform: none;
    padding: 8px;
  }
  .media-card.demo-reel-card video {
    height: min(68svh, calc(100svh - 170px), 760px);
    max-height: calc(100svh - 170px);
    aspect-ratio: 16 / 9;
  }
  .demo-reel-card::before {
    inset: 8px;
    box-shadow:
      inset 110px 0 72px -60px rgba(2, 6, 23, 0.30),
      inset -110px 0 72px -60px rgba(2, 6, 23, 0.30);
  }
  .demo-reel-actions {
    right: 14px;
    bottom: 14px;
    justify-content: stretch;
  }
  .demo-reel-fullscreen {
    width: auto;
    min-width: 132px;
  }
}

@media (max-width: 760px) {
  .showcase-grid-2,
  .showcase-grid-3,
  .showcase-grid-first-row {
    grid-template-columns: 1fr;
  }
  .video-group {
    padding: 14px;
  }
  .nav {
    width: 100%;
    justify-content: flex-start;
    gap: 8px;
    font-size: 13px;
  }
  .hero {
    min-height: auto;
    padding-top: 10px;
  }
  .hero-title {
    max-width: 100%;
    font-size: clamp(22px, 8vw, 34px);
  }
  .media-grid {
    grid-template-columns: 1fr;
  }
  .metric-table {
    font-size: 11.5px;
  }
  .metric-table thead th {
    white-space: normal;
  }
  .metric-table thead th,
  .metric-table tbody td {
    padding: 6px 6px;
  }
}