:root {
  color-scheme: light;
  --bg: #f7f9fc;
  --paper: #ffffff;
  --ink: #101827;
  --muted: #647083;
  --line: #dce3ee;
  --navy: #082c5a;
  --navy-2: #123f74;
  --red: #bf2539;
  --gold: #d5a747;
  --blue-soft: #e9f2ff;
  --red-soft: #fff1f3;
  --shadow: 0 22px 70px rgba(8, 44, 90, 0.13);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}

a {
  color: var(--navy-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(247, 249, 252, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.top-nav {
  width: min(1200px, calc(100% - 32px));
  min-height: 64px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--navy);
  font-size: 18px;
  font-weight: 850;
  letter-spacing: 0;
}

.brand img {
  width: 34px;
  height: 34px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 14px;
  font-weight: 700;
}

.nav-links a {
  color: #24324a;
}

.nav-toggle,
.toc-toggle {
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--paper);
  color: var(--ink);
  padding: 8px 12px;
  font: inherit;
  font-weight: 760;
}

.nav-toggle {
  display: none;
}

.toc-toggle {
  position: fixed;
  right: 18px;
  bottom: 18px;
  z-index: 25;
  box-shadow: 0 12px 34px rgba(8, 44, 90, 0.18);
}

.toc-panel {
  position: fixed;
  left: max(18px, calc((100vw - 1404px) / 2));
  top: 92px;
  z-index: 10;
  width: 170px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 16px 44px rgba(8, 44, 90, 0.1);
  backdrop-filter: blur(12px);
}

.toc-title {
  margin-bottom: 10px;
  color: var(--red);
  font-size: 12px;
  font-weight: 850;
  text-transform: uppercase;
}

.toc-panel a {
  display: block;
  padding: 7px 0;
  color: #33425a;
  font-size: 13px;
  font-weight: 700;
}

.hero {
  background:
    radial-gradient(circle at 16% 18%, rgba(191, 37, 57, 0.09), transparent 30%),
    radial-gradient(circle at 84% 12%, rgba(213, 167, 71, 0.14), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #edf4ff 100%);
  border-bottom: 1px solid var(--line);
}

.hero-inner {
  width: min(1040px, calc(100% - 32px));
  min-height: min(700px, calc(100vh - 156px));
  margin: 0 auto;
  padding: 42px 0 32px;
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 48px;
  align-items: center;
}

.hero-mark {
  display: flex;
  justify-content: center;
}

.hero-mark img {
  width: min(100%, 205px);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.venue-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.venue {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 3px 11px;
  border-radius: 999px;
  background: var(--blue-soft);
  color: var(--navy-2);
  font-size: 13px;
  font-weight: 850;
}

.venue.secondary {
  background: #fff7e5;
  color: #805f14;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 18px;
  color: var(--navy);
  font-size: clamp(44px, 6.6vw, 74px);
  line-height: 0.95;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 16px;
  color: var(--navy);
  font-size: 36px;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 8px;
  color: var(--navy);
  font-size: 19px;
  line-height: 1.25;
}

.subtitle {
  max-width: 790px;
  color: #2d405d;
  font-size: 21px;
  line-height: 1.5;
}

.authors,
.affiliations,
.equal {
  color: var(--muted);
  font-size: 15px;
}

.actions,
.download-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.actions {
  margin-top: 28px;
}

.actions a,
.download-link,
.inline-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border-radius: 7px;
  padding: 9px 15px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--navy);
  font-size: 14px;
  font-weight: 850;
  box-shadow: 0 8px 22px rgba(8, 44, 90, 0.08);
}

.actions a.primary,
.download-link:first-child {
  border-color: var(--navy);
  background: var(--navy);
  color: #ffffff;
}

.section {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 78px 0;
}

.section-grid {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 62px;
  align-items: start;
}

.section-grid > *,
.method-layout > *,
.materials-layout > * {
  min-width: 0;
}

.section-title {
  max-width: 850px;
  margin-bottom: 28px;
}

.kicker {
  margin-bottom: 10px;
  color: var(--red);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

.lead {
  color: #243b5c;
  font-size: 22px;
  line-height: 1.48;
}

.wide-figure,
.method-figure,
.poster-preview {
  margin: 0;
}

.wide-figure,
.method-figure,
.poster-preview,
.equation-card,
.table-wrap,
pre {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 16px 48px rgba(8, 44, 90, 0.08);
  overflow: hidden;
}

figure img {
  display: block;
  width: 100%;
  height: auto;
}

img,
pre,
table {
  max-width: 100%;
}

figcaption,
.caption {
  margin: 0;
  padding: 12px 16px 16px;
  color: var(--muted);
  font-size: 14px;
}

.method-layout,
.materials-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(330px, 0.88fr);
  gap: 24px;
  align-items: start;
}

.method-points {
  display: grid;
  gap: 14px;
}

.method-points article,
.download-panel,
.repro-section .section-grid > div:last-child {
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: 0 12px 36px rgba(8, 44, 90, 0.07);
}

.method-points article:nth-child(3) {
  border-color: #f1c3ca;
  background: var(--red-soft);
}

.equation-card {
  display: grid;
  gap: 10px;
  padding: 26px;
  color: var(--navy);
  font-size: 18px;
  overflow-x: auto;
}

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 24px;
}

.stat {
  min-height: 148px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
}

.stat span,
.stat small {
  display: block;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.35;
}

.stat strong {
  display: block;
  margin: 14px 0 10px;
  color: var(--navy);
  font-size: 30px;
  line-height: 1;
}

.table-wrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
}

th,
td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--line);
  text-align: left;
}

th {
  color: var(--navy);
  background: #f1f5fb;
  font-size: 13px;
  text-transform: uppercase;
}

td:not(:first-child),
th:not(:first-child) {
  text-align: right;
}

tr:last-child td {
  border-bottom: 0;
}

.download-panel {
  align-content: start;
}

.download-link {
  width: 100%;
}

pre {
  overflow-x: auto;
  padding: 18px;
  color: #eaf1fc;
  background: #101a2b;
}

pre + pre {
  margin-top: 16px;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  font-size: 14px;
}

.footer {
  width: min(1040px, calc(100% - 32px));
  margin: 0 auto;
  padding: 30px 0 50px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  font-size: 14px;
}

.footer span {
  margin-right: auto;
}

@media (max-width: 1380px) {
  .toc-panel {
    display: none;
  }
}

@media (min-width: 1381px) {
  .toc-toggle {
    display: none;
  }
}

@media (max-width: 960px) {
  .hero-inner,
  .section-grid,
  .method-layout,
  .materials-layout {
    grid-template-columns: 1fr;
  }

  .hero-inner {
    min-height: auto;
    padding-top: 42px;
  }

  .hero-mark img {
    width: 138px;
  }

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

@media (max-width: 720px) {
  .top-nav {
    align-items: flex-start;
    padding: 13px 0;
    flex-wrap: wrap;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-top: 10px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 10px 0;
  }

  .toc-panel {
    display: none;
    position: fixed;
    left: 16px;
    right: 16px;
    top: 72px;
    width: auto;
    max-height: calc(100vh - 92px);
    overflow-y: auto;
  }

  .toc-panel.open {
    display: block;
  }

  .toc-toggle {
    position: fixed;
    top: 14px;
    right: 94px;
    bottom: auto;
    z-index: 26;
    width: auto;
    margin: 0;
    justify-content: center;
  }

  .section {
    padding: 56px 0;
  }

  .hero-inner {
    gap: 20px;
    padding: 28px 0 26px;
  }

  .hero-mark {
    display: none;
  }

  .venue-row {
    margin-bottom: 14px;
  }

  h1 {
    font-size: 31px;
    line-height: 1.05;
    margin-bottom: 14px;
  }

  h2 {
    font-size: 29px;
  }

  .subtitle,
  .lead {
    font-size: 17px;
  }

  .authors,
  .affiliations,
  .equal {
    font-size: 14px;
  }

  .actions {
    margin-top: 20px;
  }

  .actions a {
    flex: 1 1 calc(50% - 10px);
    min-width: 0;
    padding-inline: 10px;
  }

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

  th,
  td {
    padding: 9px 7px;
  }

  table {
    font-size: 12px;
  }

  th {
    font-size: 10px;
    line-height: 1.2;
    white-space: normal;
  }

  td:first-child,
  th:first-child {
    white-space: nowrap;
  }
}