:root {
  --ink: #17191c;
  --ink-soft: #555c63;
  --paper: #fbfaf7;
  --paper-warm: #f3f0e9;
  --line: #d9d7d1;
  --mars: #dd4a2b;
  --mars-dark: #a9321d;
  --signal: #1c756d;
  --signal-pale: #dcebe7;
  --night: #17191c;
  --white: #fff;
  --shadow: 0 20px 60px rgba(23, 25, 28, .08);
}

html {
  scroll-padding-top: 76px;
  background: var(--paper);
  max-width: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  width: 100%;
  max-width: 100%;
  overflow-x: clip;
  background: var(--paper);
  color: var(--ink);
  font-family: "Inter", sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6,
.title.is-1 {
  font-family: "Manrope", sans-serif;
  color: var(--ink);
  letter-spacing: -.035em;
}

a { color: inherit; }

.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 1000;
  background: var(--white);
  padding: .7rem 1rem;
  border-radius: 0 0 8px 8px;
  box-shadow: var(--shadow);
}

.skip-link:focus { top: 0; }

/* Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 120;
  height: 70px;
  background: rgba(251, 250, 247, .9);
  border-bottom: 1px solid rgba(23, 25, 28, .1);
  backdrop-filter: blur(16px);
}

.toc-container {
  position: static;
  transform: none;
  max-width: 1180px;
  height: 70px;
  margin: 0 auto;
  padding: 0 1.5rem;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: transparent;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 2rem;
}

.toc-container h4 { display: none; }
.toc-container ul {
  display: flex;
  align-items: center;
  gap: 2rem;
  margin: 0;
  padding: 0;
}
.toc-container li { margin: 0; }
.toc-container a {
  padding: .3rem 0;
  font-size: .78rem;
  font-weight: 700;
  color: var(--ink-soft);
  letter-spacing: .04em;
  text-transform: uppercase;
}
.toc-container a:hover,
.toc-container a.active {
  color: var(--mars);
  transform: none;
}
.site-brand {
  justify-self: start;
  font-family: "Manrope", sans-serif;
  font-size: 1.25rem !important;
  font-weight: 800 !important;
  color: var(--ink) !important;
  letter-spacing: -.04em !important;
  text-transform: none !important;
}
.site-brand span { color: var(--mars); }
.nav-paper {
  justify-self: end;
  padding: .62rem .9rem !important;
  border: 1px solid var(--ink);
  border-radius: 999px;
  color: var(--ink) !important;
}
.nav-paper:hover {
  color: var(--white) !important;
  background: var(--ink);
}

/* Hero */
.hero {
  width: 100%;
  max-width: 100%;
  min-height: calc(100vh - 70px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  background:
    radial-gradient(circle at 87% 12%, rgba(221, 74, 43, .10), transparent 27rem),
    radial-gradient(circle at 10% 80%, rgba(28, 117, 109, .10), transparent 30rem),
    var(--paper);
  border-bottom: 1px solid var(--line);
}
.hero::before, .hero::after { display: none; }
.hero-body {
  align-self: stretch;
  flex: 0 0 auto;
  width: 100%;
  max-width: 100%;
  padding: 5rem 1.5rem 4rem;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}
.hero-shell {
  flex: 0 0 auto;
  width: min(1040px, calc(100vw - 3rem));
  max-width: 1040px;
  margin: 0 auto !important;
  padding: 0;
  text-align: center;
}
.hero-eyebrow {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: .6rem;
  margin: 0 0 1.2rem;
  color: var(--ink-soft);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .14em;
}
.hero-eyebrow span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 5px rgba(28, 117, 109, .10);
}
.hero-wordmark {
  margin: 0 auto .7rem;
  font-family: "Manrope", sans-serif;
  font-size: clamp(4.8rem, 14vw, 10.5rem);
  line-height: .84;
  font-weight: 800;
  letter-spacing: -.09em;
  color: var(--ink);
}
.hero-wordmark span { color: var(--mars); }
.title.is-1 {
  width: 100%;
  max-width: 1040px;
  margin: 1.3rem auto .8rem;
  font-size: clamp(1.75rem, 3.2vw, 3.15rem);
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -.055em;
  color: var(--ink);
  background: none;
  -webkit-text-fill-color: currentColor;
  text-align: center;
  overflow-wrap: normal;
}
.title.is-1 span {
  color: var(--ink-soft);
  font-weight: 600;
}
.title.is-1 .title-primary,
.title.is-1 .title-secondary {
  display: block;
  width: 100%;
  white-space: normal;
}
.title.is-1 .title-primary {
  color: var(--ink);
  font-weight: 700;
}
.hero-deck {
  margin: 0 auto 2rem;
  font-size: clamp(1rem, 2vw, 1.22rem);
  color: var(--ink-soft);
}
.authors {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: baseline;
  gap: .05rem .55rem;
  text-align: center;
  line-height: 1.9;
}
.author-block {
  display: inline-flex;
  align-items: baseline;
  margin: 0;
}
.author-line-break {
  flex: 0 0 100%;
  width: 100%;
  height: 0;
}
.author-block a {
  color: var(--ink);
  font-weight: 600;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.author-block a:hover { color: var(--mars-dark); }
.author-block sup,
.affiliations sup,
.author-note sup { color: var(--mars); }
.affiliations {
  margin: .65rem 0 0;
  color: var(--ink-soft);
  font-size: .84rem;
}
.author-note {
  margin: .15rem 0 1.1rem;
  color: var(--ink-soft);
  font-size: .75rem;
}
.publication-badge {
  margin: .6rem 0 .8rem;
  padding: .4rem .85rem;
  background: var(--signal-pale);
  box-shadow: none;
  color: var(--signal);
  border-radius: 4px;
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.publication-links { margin: 1rem 0 2.4rem; gap: .55rem; }
.link-block a,
.link-block a.arxiv-link,
.link-block a.github-link,
.link-block a.dataset-link {
  min-width: 118px;
  justify-content: center;
  padding: .68rem 1.15rem;
  border: 1px solid var(--ink);
  border-radius: 999px;
  background: transparent;
  color: var(--ink);
  box-shadow: none;
  font-size: .82rem;
}
.link-block:first-child a { background: var(--ink); color: var(--white); }
.link-block a:hover,
.link-block a.arxiv-link:hover,
.link-block a.github-link:hover,
.link-block a.dataset-link:hover {
  transform: translateY(-2px);
  background: var(--mars);
  border-color: var(--mars);
  color: var(--white);
  box-shadow: 0 10px 24px rgba(169, 50, 29, .18);
}
.hero-principles {
  max-width: 820px;
  margin: 0 auto;
  padding: 1.25rem 1.5rem;
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.hero-principles div {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  column-gap: .7rem;
  text-align: left;
}
.hero-principles div > span {
  grid-row: 1 / 3;
  color: var(--mars);
  font: 500 .7rem "JetBrains Mono", monospace;
}
.hero-principles strong { font-size: .9rem; line-height: 1.2; }
.hero-principles small { color: var(--ink-soft); font-size: .72rem; }
.hero-principles > i { color: #a4a19a; font-style: normal; }

/* Short visual overview directly beneath the hero. */
.promo-section {
  padding: 4.5rem 1.5rem 5rem;
  border-bottom: 1px solid var(--line);
  background: var(--paper-warm);
}
.promo-heading { margin: 0 auto 1.5rem; text-align: center; }
.promo-heading p {
  margin: 0 0 .45rem;
  color: var(--mars);
  font: 700 .68rem "JetBrains Mono", monospace;
  letter-spacing: .12em;
}
.promo-heading h2 {
  margin: 0;
  font-size: clamp(1.75rem, 3.6vw, 2.7rem);
  line-height: 1.15;
}
.promo-frame {
  position: relative;
  overflow: hidden;
  border: 1px solid #d3d0c9;
  border-radius: 5px;
  background: #fff;
  box-shadow: var(--shadow);
}
.promo-frame::before {
  content: "MARS / VISUAL OVERVIEW";
  position: absolute;
  z-index: 2;
  top: .8rem;
  left: .9rem;
  padding: .32rem .5rem;
  border: 1px solid rgba(23,25,28,.12);
  border-radius: 3px;
  background: rgba(251,250,247,.88);
  color: var(--ink-soft);
  font: 700 .56rem "JetBrains Mono", monospace;
  letter-spacing: .08em;
  pointer-events: none;
  backdrop-filter: blur(8px);
}
.promo-frame video {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
}

/* Sections */
.section { padding: clamp(4.5rem, 8vw, 8rem) 1.5rem; }
.section:nth-child(even) { background: transparent; }
#motivation, #method, #bibtex { background: var(--paper-warm); }
.section .container { max-width: 1060px !important; }
.section-title {
  margin: 0 auto 2rem;
  font-size: clamp(2.1rem, 5vw, 4rem);
  line-height: 1.05;
  text-align: left;
  letter-spacing: -.06em;
}
.section-title::before {
  content: attr(data-kicker);
  display: block;
  margin-bottom: 1rem;
  color: var(--mars);
  font: 600 .72rem "JetBrains Mono", monospace;
  letter-spacing: .1em;
}
.section-title::after { display: none; }
.mars-text {
  color: var(--mars);
  background: none;
  -webkit-text-fill-color: currentColor;
}

.abstract-box {
  margin: 3rem 0 0;
  padding: 0 0 0 2rem;
  background: none;
  border: 0;
  border-left: 2px solid var(--mars);
  border-radius: 0;
  box-shadow: none;
}
.abstract-box p {
  max-width: 930px;
  color: var(--ink-soft);
  font-size: clamp(1.02rem, 1.8vw, 1.25rem);
  line-height: 1.8;
}
.abstract-box strong { color: var(--ink); }

.balance-story {
  margin: 3.5rem 0;
  padding: 2rem;
  display: grid;
  grid-template-columns: 1fr 1.4fr 1fr;
  align-items: center;
  gap: 2rem;
  background: var(--night);
  border-radius: 4px;
  color: var(--white);
  box-shadow: var(--shadow);
}
.balance-story article { display: flex; flex-direction: column; }
.balance-story article:last-child { text-align: right; }
.module-label {
  color: #b8babd;
  font: 500 .66rem "JetBrains Mono", monospace;
  letter-spacing: .12em;
}
.balance-story strong {
  margin: .25rem 0;
  color: #fff !important;
  font-size: 1.15rem;
  font-weight: 650;
}
.balance-story small { color: #c8cbce; }
.balance-axis { text-align: center; }
.balance-axis > span {
  display: inline-block;
  padding: .3rem .65rem;
  border: 1px solid rgba(255,255,255,.25);
  border-radius: 999px;
  color: #fff;
  font: 500 .75rem "JetBrains Mono", monospace;
}
.balance-axis > div { display: flex; align-items: center; margin: .65rem 0; }
.balance-axis i { height: 1px; flex: 1; background: linear-gradient(90deg, transparent, var(--mars)); }
.balance-axis i:last-child { background: linear-gradient(90deg, var(--signal), transparent); }
.balance-axis b {
  margin: 0 .65rem;
  color: #fff;
  font-size: .72rem;
  font-weight: 600;
  white-space: nowrap;
}

.motivation-grid { gap: 1rem; margin: 0; }
.motivation-card {
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(255,255,255,.72);
  box-shadow: none;
}
.motivation-card h4 { font-size: .92rem; }
.motivation-card img { background: #fff; }
.motivation-card .tag { border-radius: 3px; font-size: .66rem; letter-spacing: .04em; }
.tag-slow { background: #f5e3df; color: var(--mars-dark); }
.tag-balanced { background: var(--signal-pale); color: var(--signal); }

.contributions-list {
  max-width: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin-top: 3.5rem;
  background: var(--line);
  border: 1px solid var(--line);
}
.contribution-item {
  min-height: 260px;
  display: block;
  padding: 1.8rem;
  border: 0;
  background: var(--paper);
}
.contribution-number {
  width: auto;
  height: auto;
  margin-bottom: 2.5rem;
  justify-content: flex-start;
  background: none;
  color: var(--mars);
  box-shadow: none;
  font: 500 .75rem "JetBrains Mono", monospace;
}
.contribution-number::before { content: "0"; }
.contribution-content h4 { font-size: 1.05rem; }
.contribution-content p { font-size: .88rem; }

.method-overview {
  margin: 3rem 0 0;
  padding: clamp(1.25rem, 4vw, 3rem);
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--paper);
  box-shadow: none;
}
.method-overview img {
  padding: .45rem;
  border: 1px solid var(--line);
  border-radius: 2px !important;
  background: #fff;
  box-shadow: none !important;
}
.dual-scaling-laws { gap: 1rem; }
.scaling-law-card {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
}
.scaling-law-card.performance { border-top: 3px solid var(--signal); }
.scaling-law-card.convergence { border-top: 3px solid var(--mars); }
.scaling-law-card:hover { border-color: var(--ink); box-shadow: none; }
.scaling-law-card .formula {
  border-radius: 2px;
  background: var(--night);
  font-size: .78rem;
}
.key-finding-item {
  border-radius: 0;
  border-left-color: var(--signal);
  background: var(--paper-warm);
}
.key-finding-item.convergence-finding { border-left-color: var(--mars); }
.workflow-container { max-width: none; gap: 0; }
.workflow-step { gap: 0; }
.step-number {
  width: 46px;
  height: 46px;
  margin: 1.25rem 0 0;
  border-radius: 0;
  background: var(--mars);
  box-shadow: none;
  font-size: .9rem;
}
.step-content {
  margin-left: 1rem;
  padding: 1.4rem 1.5rem;
  border: 0;
  border-left: 1px solid var(--line);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.step-content h4 { color: var(--ink); }

.results-highlight {
  margin: 3rem 0 4.5rem;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.result-card {
  border: 0;
  border-radius: 0;
  background: var(--paper);
  box-shadow: none;
}
.result-card:hover { transform: none; }
.result-card .metric {
  color: var(--mars);
  background: none;
  -webkit-text-fill-color: currentColor;
  font-family: "Manrope", sans-serif;
  letter-spacing: -.06em;
}
.image-container {
  padding: 1.5rem;
  border: 1px solid var(--line);
  background: #fff;
}
.image-container img {
  max-width: 82% !important;
  border-radius: 0 !important;
  box-shadow: none !important;
}

/* Appendix I radar explorer, following GroundAct's honest normalized view. */
.radar-overview { margin: 4.5rem 0 5rem; }
.radar-heading { max-width: 720px; margin: 0 auto 1.5rem; text-align: center; }
.radar-kicker {
  margin: 0 0 .6rem !important;
  color: var(--mars) !important;
  font: 700 .68rem "JetBrains Mono", monospace;
  letter-spacing: .12em;
}
.radar-heading h3 {
  margin: 0;
  font-size: clamp(1.7rem, 3.4vw, 2.55rem);
  line-height: 1.12;
}
.radar-heading > p:last-child {
  margin: .85rem auto 0;
  color: var(--ink-soft);
  font-size: .95rem;
}
.radar-guide {
  margin: 0 0 1.25rem;
  padding: 1.2rem 1.35rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  border: 1px solid var(--line);
  border-left: 3px solid var(--signal);
  border-radius: 4px;
  background: #fff;
}
.radar-guide-icon {
  width: 44px;
  height: 44px;
  flex: 0 0 44px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--signal-pale);
  color: var(--signal);
  font-size: 1.35rem;
  font-weight: 700;
}
.radar-guide div > span {
  color: var(--signal);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .11em;
}
.radar-guide strong { display: block; color: var(--ink); font-size: 1.15rem; }
.radar-guide p { margin: .2rem 0 0; color: var(--ink-soft); font-size: .78rem; line-height: 1.65; }
.radar-loading { padding: 3rem; border: 1px solid var(--line); text-align: center; color: var(--ink-soft); }
.radar-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.radar-card {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: #fff;
  box-shadow: 0 3px 14px rgba(23, 25, 28, .025);
}
.radar-card > header {
  min-height: 74px;
  padding: 1.15rem 1.25rem .35rem;
  display: grid;
  grid-template-columns: 27px minmax(0, 1fr) auto;
  align-items: center;
  gap: .65rem;
}
.radar-card-index {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  color: var(--mars);
  font: 700 .62rem "JetBrains Mono", monospace;
}
.radar-card h4 { margin: 0; font-size: .98rem; line-height: 1.35; }
.radar-card header p { margin: .15rem 0 0; color: var(--ink-soft); font-size: .67rem; }
.radar-card header small {
  color: var(--ink-soft);
  font: 600 .6rem "JetBrains Mono", monospace;
  letter-spacing: .06em;
  text-transform: uppercase;
}
.radar-direction {
  margin: .45rem 1.25rem 0;
  padding-top: .65rem;
  border-top: 1px solid #eceae5;
  color: var(--signal);
  font-size: .62rem;
  font-weight: 800;
  letter-spacing: .1em;
}
.radar-svg { display: block; width: 100%; height: auto; overflow: visible; }
.radar-svg text { font-family: "Inter", sans-serif; }
.radar-grid-ring { fill: none; stroke: #e3e1db; stroke-width: 1; }
.radar-spoke { stroke: #e2dfd8; stroke-width: 1; }
.radar-axis-label { fill: #555950; font-size: 11px; font-weight: 600; }
.radar-scale-label { fill: #797c75; font-size: 9px; paint-order: stroke; stroke: #fff; stroke-width: 3px; }
.radar-series { transition: opacity .2s ease; }
.radar-series polygon { stroke-linejoin: round; transition: opacity .2s ease; }
.radar-series circle {
  cursor: help;
  transition: r .15s ease, opacity .2s ease;
  outline: none;
}
.radar-series circle:hover,
.radar-series circle:focus { r: 5; stroke-width: 2; }
.radar-tooltip {
  position: fixed;
  z-index: 300;
  max-width: 230px;
  padding: .55rem .7rem;
  border: 1px solid rgba(255,255,255,.18);
  border-radius: 4px;
  background: rgba(23,25,28,.96);
  color: #fff;
  box-shadow: 0 8px 28px rgba(23,25,28,.2);
  font-size: .7rem;
  line-height: 1.45;
  pointer-events: none;
}
.radar-tooltip strong { color: #fff; }
.radar-tooltip span { color: #c9cdd0; }
.radar-legend {
  padding: 1.25rem 0 .7rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: .45rem;
}
.radar-legend button {
  min-height: 36px;
  padding: .45rem .7rem;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--ink-soft);
  font-size: .68rem;
  cursor: pointer;
  transition: border-color .15s ease, background .15s ease, opacity .15s ease;
}
.radar-legend button:hover { border-color: #aaa8a2; }
.radar-legend button[aria-pressed="false"] { opacity: .42; background: #f3f1ec; }
.radar-legend svg { width: 28px; height: 10px; }
.radar-exact { margin-top: 1.2rem; border-block: 1px solid var(--line); }
.radar-exact > summary {
  padding: .9rem .15rem;
  display: flex;
  justify-content: space-between;
  color: var(--ink-soft);
  font-size: .72rem;
  cursor: pointer;
  list-style: none;
}
.radar-exact > summary::after { content: "+"; color: var(--mars); font-weight: 800; }
.radar-exact[open] > summary::after { content: "−"; }
.radar-formula { margin: .1rem 0 1rem; color: var(--ink-soft); font-size: .68rem; }
.radar-table-wrap { margin: 0 0 1.4rem; overflow-x: auto; }
.radar-table-wrap h5 { margin: 0 0 .55rem; font-size: .84rem; }
.radar-table { width: 100%; border-collapse: collapse; white-space: nowrap; font-size: .72rem; }
.radar-table th, .radar-table td { padding: .58rem .65rem; border-bottom: 1px solid #eceae5; text-align: right; }
.radar-table th { color: var(--ink-soft); font-size: .64rem; font-weight: 700; }
.radar-table th:first-child, .radar-table td:first-child { text-align: left; }
.radar-table tr.is-mars td { background: rgba(221,74,43,.055); color: var(--mars-dark); font-weight: 700; }
.comparison-table-wrapper {
  border: 1px solid var(--line);
  border-radius: 3px;
  background: #fff;
}
.comparison-table { border-radius: 0; box-shadow: none; }
.comparison-table th {
  padding: .85rem 1rem;
  background: var(--night);
  font-size: .75rem;
  letter-spacing: .02em;
}
.comparison-table td { padding: .8rem 1rem; font-size: .82rem; }
.comparison-table .best { color: var(--mars-dark); }
.comparison-table .mars-row { background: rgba(221, 74, 43, .045); }

.bibtex-container {
  max-width: none;
  border-radius: 3px;
  background: var(--night);
  box-shadow: none;
}
.copy-button {
  border-radius: 999px;
  background: var(--mars);
}
.copy-button:hover { background: var(--mars-dark); }

footer {
  padding: 2rem 1.5rem;
  border-top: 1px solid #303338;
  background: var(--night);
  font-size: .75rem;
}
footer a { color: #fff; }
.back-to-top {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--mars);
  box-shadow: 0 8px 20px rgba(169,50,29,.24);
  font-size: 1rem;
}

/* Reveal motion is progressive enhancement and respects reduced-motion users. */
@media (prefers-reduced-motion: no-preference) {
  .section > .container > * {
    transition: opacity .55s ease, transform .55s ease;
  }
  .js-reveal {
    opacity: 0;
    transform: translateY(18px);
  }
  .js-reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

@media (max-width: 900px) {
  .toc-container { display: grid; grid-template-columns: 1fr auto; }
  .toc-container ul { display: none; }
  .hero { min-height: auto; }
  .hero-body { padding-top: 4rem; }
  .balance-story { grid-template-columns: 1fr; text-align: center; }
  .balance-story article:last-child { text-align: center; }
  .radar-grid { grid-template-columns: 1fr; }
  .radar-card { width: 100%; max-width: 590px; margin-inline: auto; }
  .contributions-list { grid-template-columns: 1fr; }
  .contribution-item { min-height: auto; }
  .contribution-number { margin-bottom: 1rem; }
}

@media (max-width: 680px) {
  .site-header, .toc-container { height: 62px; }
  html { scroll-padding-top: 68px; }
  .toc-container { padding: 0 1rem; }
  .nav-paper { font-size: .66rem !important; }
  .hero-body { padding: 3.5rem 1rem 2.5rem; }
  .hero-shell { width: calc(100vw - 2rem); }
  .hero-wordmark { font-size: clamp(4.5rem, 27vw, 7rem); }
  .hero-eyebrow { font-size: .58rem; letter-spacing: .08em; }
  .title.is-1 { font-size: 1.65rem; }
  .hero-principles { grid-template-columns: 1fr; padding: 1rem 0; }
  .hero-principles > i { transform: rotate(90deg); }
  .hero-principles div { width: 190px; margin: auto; }
  .promo-section { padding: 3.5rem 1rem; }
  .promo-frame::before { top: .5rem; left: .5rem; }
  .section { padding: 4.25rem 1rem; }
  .section-title { font-size: 2.2rem; }
  .abstract-box { padding-left: 1.2rem; }
  .motivation-card > div[style*="display: flex"] { flex-direction: column; }
  .motivation-card img { width: 100% !important; }
  .method-overview > div[style*="grid-template-columns"] { grid-template-columns: 1fr !important; }
  .dual-scaling-laws { grid-template-columns: 1fr; }
  .workflow-step { align-items: stretch; text-align: left; }
  .results-highlight { grid-template-columns: 1fr; }
  .image-container { padding: .65rem; }
  .image-container img { max-width: 100% !important; }
  .radar-overview { margin-block: 3.5rem; }
  .radar-guide { align-items: flex-start; padding: 1rem; }
  .radar-guide-icon { width: 36px; height: 36px; flex-basis: 36px; font-size: 1rem; }
  .radar-card > header { padding-inline: .9rem; }
  .radar-direction { margin-inline: .9rem; }
  .radar-axis-label { font-size: 10px; }
  .radar-legend { gap: .35rem; }
  .bibtex-container { padding: 4rem 1rem 1rem; }
  .bibtex-container pre { font-size: .68rem; }
  .back-to-top { right: 1rem; bottom: 1rem; }
}