:root {
  --ink: #1d2433; --muted: #5d6678; --line: #dfe3ea; --soft: #f7f8fb;
  --blue: #3558b7; --blue-soft: #e9eefc; --orange: #df744a; --green: #33846a;
  --serif: "Source Serif 4", Georgia, serif; --sans: "Inter", system-ui, sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: #fff; font-family: var(--sans); font-size: 16px; line-height: 1.65; }
a { color: inherit; } img { display: block; max-width: 100%; }
.topbar { position: sticky; top: 0; z-index: 20; height: 58px; padding: 0 max(24px, calc((100vw - 1120px) / 2)); display: flex; align-items: center; justify-content: space-between; background: rgba(255,255,255,.94); border-bottom: 1px solid var(--line); backdrop-filter: blur(10px); }
.wordmark { color: var(--blue); font-weight: 700; text-decoration: none; }
nav { display: flex; gap: 25px; } nav a { color: var(--muted); font-size: 13px; text-decoration: none; } nav a:hover { color: var(--blue); }
.hero { max-width: 1040px; margin: auto; padding: 92px 24px 74px; text-align: center; }
.venue, .section-kicker { color: var(--blue); font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
h1, h2 { font-family: var(--serif); }
h1 { margin: 14px auto 22px; font-size: clamp(44px, 6.3vw, 76px); line-height: 1.02; letter-spacing: -.035em; }
h1 span { color: var(--blue); }
.tagline { max-width: 790px; margin: 0 auto 24px; color: var(--muted); font-size: clamp(17px, 2vw, 21px); line-height: 1.55; }
.authors { margin: 0 0 2px; font-size: 17px; } .authors a { color: var(--blue); text-decoration: none; }
.authors sup, .affiliation sup { padding-left: 2px; } .affiliation { margin: 0; color: var(--muted); font-size: 14px; }
.link-row { display: flex; justify-content: center; gap: 12px; margin: 28px 0 40px; }
.pill { min-width: 126px; padding: 10px 20px; color: #fff; background: var(--ink); border-radius: 999px; font-size: 14px; font-weight: 600; text-decoration: none; transition: .2s; }
.pill:hover { transform: translateY(-2px); background: var(--blue); } .icon { margin-right: 7px; }
.hero-summary { max-width: 860px; margin: auto; padding: 20px 24px; display: grid; grid-template-columns: 72px 1fr; gap: 16px; text-align: left; background: var(--blue-soft); border-radius: 10px; }
.hero-summary strong { color: var(--blue); } .hero-summary p { margin: 0; }
.paper-section { max-width: 1120px; margin: auto; padding: 86px 24px; scroll-margin-top: 58px; }
.paper-section.shaded { max-width: none; padding-left: max(24px, calc((100vw - 1072px) / 2)); padding-right: max(24px, calc((100vw - 1072px) / 2)); background: var(--soft); border-block: 1px solid var(--line); }
.section-kicker { margin-bottom: 11px; }
h2 { max-width: 880px; margin: 0 0 20px; font-size: clamp(34px, 4.2vw, 52px); line-height: 1.12; letter-spacing: -.02em; }
.lead { max-width: 880px; margin: 0 0 48px; color: var(--muted); font-size: 18px; }
.mechanism { display: grid; grid-template-columns: 1fr 100px 1fr 100px 1fr; gap: 18px; align-items: start; }
.mechanism-item { position: relative; }
.step { position: absolute; z-index: 2; top: 10px; left: 10px; width: 27px; height: 27px; display: grid; place-items: center; color: #fff; background: var(--blue); border-radius: 50%; font-size: 12px; font-weight: 700; }
.image-tile { position: relative; aspect-ratio: 4 / 3; overflow: hidden; border-radius: 8px; background: #dce4f4; }
.image-tile::before, .image-tile::after { content: ""; position: absolute; }
.source-tile { background: linear-gradient(#c9dcf1 0 57%, #95b99d 57%); }
.source-tile::before { width: 44%; height: 55%; left: 15%; bottom: -20%; background: #476f57; transform: rotate(45deg); }
.source-tile::after { width: 40%; height: 50%; right: 6%; bottom: -21%; background: #8e644d; transform: rotate(45deg); }
.residual-tile { background-color: #8b8e89; background-image: repeating-radial-gradient(circle at 30% 40%, rgba(255,107,71,.32) 0 1px, transparent 1px 6px); }
.target-tile { background-color: #eadfcf; background-image: linear-gradient(90deg, transparent 10%, #405d8b 10% 30%, transparent 30% 37%, #273753 37% 68%, transparent 68% 75%, #a65f50 75% 92%, transparent 92%); }
.image-tile span { position: absolute; z-index: 3; right: 10px; bottom: 9px; padding: 4px 7px; color: #fff; background: rgba(20,26,40,.78); border-radius: 4px; font-family: ui-monospace, monospace; font-size: 12px; }
.mechanism-item h3 { margin: 16px 0 6px; font-size: 17px; } .mechanism-item p { margin: 0; color: var(--muted); font-size: 13px; line-height: 1.55; }
.operator { padding-top: 82px; text-align: center; } .operator span, .operator b { display: block; font-size: 11px; }
.operator span { color: var(--muted); text-transform: uppercase; } .operator b { margin-top: 5px; font-family: var(--serif); font-size: 14px; }
.operator i { display: block; color: var(--orange); font-size: 38px; font-style: normal; line-height: 1; }
.figure-caption, figcaption { margin-top: 14px; color: var(--muted); font-size: 12px; }
.finding-layout { display: block; }
.finding-copy { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; margin-bottom: 34px; }
.statement { display: grid; grid-template-columns: 36px 1fr; gap: 14px; margin: 0; }
.statement span { width: 34px; height: 34px; display: grid; place-items: center; color: var(--blue); background: var(--blue-soft); border-radius: 50%; font-weight: 700; }
.statement p { margin: 0; color: var(--muted); } .statement b { color: var(--ink); }
.paper-figure { margin: 0; } .paper-figure img { width: 100%; background: #fff; border: 1px solid var(--line); }
.ruled-out { margin-bottom: 54px; display: grid; grid-template-columns: 1.25fr repeat(4, 1fr) .75fr; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.ruled-out > div { min-height: 104px; padding: 18px 16px; display: flex; flex-direction: column; justify-content: center; border-right: 1px solid var(--line); }
.ruled-out > div:last-child { border-right: 0; }
.ruled-label { background: var(--ink); color: #fff; }
.ruled-label span { color: #aebbd7; font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.ruled-label strong { margin-top: 5px; font: 600 17px var(--serif); }
.factor { position: relative; background: var(--soft); }
.factor::after { content: "×"; position: absolute; top: 9px; right: 12px; color: var(--orange); font-weight: 700; }
.factor span { font-size: 13px; font-weight: 600; }
.factor i { margin-top: 6px; color: var(--muted); font-size: 10px; font-style: normal; }
.not-cause { align-items: center; text-align: center; color: var(--orange); background: #fff4ef; }
.not-cause b { font-size: 24px; line-height: 1; }
.not-cause span { margin-top: 5px; color: #8a5542; font-size: 10px; line-height: 1.35; }
.architecture-conclusion { display: grid; grid-template-columns: .72fr 1.28fr; gap: 44px; align-items: center; }
.conclusion-copy > span { color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.conclusion-copy h3 { margin: 10px 0 14px; font: 700 28px/1.2 var(--serif); }
.conclusion-copy p { margin: 0; color: var(--muted); }
.panel-reading { margin-top: 24px; border-top: 1px solid var(--line); }
.panel-reading p { padding: 13px 0; display: grid; grid-template-columns: 112px 1fr; gap: 12px; border-bottom: 1px solid var(--line); font-size: 12px; line-height: 1.5; }
.panel-reading b { color: var(--blue); }
.panel-reading span { color: var(--muted); }
.architecture-figure img { border: 0; }
.takeaway { margin-top: 24px; padding: 22px 26px; display: grid; grid-template-columns: 80px 1fr; gap: 18px; border-left: 4px solid var(--blue); background: var(--blue-soft); }
.takeaway span { color: var(--blue); font-weight: 700; } .takeaway p { margin: 0; }
.equations { margin: 0 0 34px; padding: 22px 28px; display: grid; grid-template-columns: 1fr 1fr; gap: 40px; color: #fff; background: var(--ink); border-radius: 8px; }
.equations div { display: flex; justify-content: space-between; gap: 20px; } .equations span { color: #bfc8dc; font-size: 12px; text-transform: uppercase; }
.equations strong { font: 600 20px var(--serif); } .method-figure img { border: 0; box-shadow: 0 8px 30px rgba(28,38,58,.08); }
.feature-row { margin-top: 34px; display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.feature-row div { padding-top: 16px; border-top: 2px solid var(--blue); } .feature-row b, .feature-row span { display: block; } .feature-row span { color: var(--muted); font-size: 13px; }
.pareto-layout { display: grid; grid-template-columns: minmax(320px, 430px) minmax(0, 1fr); gap: clamp(42px, 7vw, 86px); align-items: center; max-width: 960px; }
.pareto-figure { width: 100%; max-width: 430px; }
.pareto-figure img { width: 100%; border: 0; }
.pareto-figure figcaption a { color: var(--blue); font-weight: 600; }
.pareto-copy { max-width: 460px; }
.result-eyebrow { margin: 0 0 8px; color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.pareto-copy h3 { margin: 0 0 14px; font: 700 clamp(26px, 3vw, 36px)/1.15 var(--serif); }
.result-explanation { margin: 0 0 24px; color: var(--muted); }
.result-explanation b { color: var(--ink); }
.metric-pair { margin: 0 0 22px; display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.metric-pair div { padding: 16px; background: var(--blue-soft); border-radius: 8px; }
.metric-pair dt { color: var(--blue); font-size: 10px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.metric-pair dd { margin: 4px 0 0; font: 700 25px var(--serif); }
.metric-pair dd span { display: block; color: var(--muted); font: 400 10px var(--sans); }
.comparison { margin: 0; padding-top: 18px; color: var(--muted); border-top: 1px solid var(--line); font-size: 13px; }
.comparison b { color: var(--ink); }
.citation-section { padding: 76px max(24px, calc((100vw - 1072px) / 2)); background: var(--soft); border-top: 1px solid var(--line); }
.citation-section h2 { font-size: 34px; } .bibtex-block { position: relative; max-width: 850px; color: #e7eaf0; background: var(--ink); border-radius: 8px; }
.bibtex-block button { position: absolute; top: 14px; right: 14px; padding: 7px 11px; color: #fff; background: #39445b; border: 0; border-radius: 5px; cursor: pointer; }
pre { margin: 0; padding: 25px; overflow: auto; font: 12px/1.7 ui-monospace, monospace; }
footer { padding: 28px max(24px, calc((100vw - 1072px) / 2)); display: flex; justify-content: space-between; gap: 20px; color: var(--muted); border-top: 1px solid var(--line); font-size: 12px; } footer p { margin: 0; }
@media (max-width: 820px) {
  nav { display: none; } .hero { padding-top: 68px; } .mechanism { grid-template-columns: 1fr; } .operator { padding: 0; } .operator i { transform: rotate(90deg); }
  .finding-copy, .architecture-conclusion, .pareto-layout { grid-template-columns: 1fr; } .pareto-figure { max-width: 390px; margin-inline: auto; } .pareto-copy { max-width: 600px; margin-inline: auto; } .ruled-out { grid-template-columns: repeat(2, 1fr); } .ruled-out > div { border-bottom: 1px solid var(--line); } .equations, .feature-row { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  h1 { font-size: 42px; } .hero-summary { grid-template-columns: 1fr; } .paper-section { padding-block: 62px; } .equations div { flex-direction: column; gap: 4px; }
  .method-figure { margin-inline: -24px; overflow-x: auto; } .method-figure img { width: 900px; max-width: none; } .ruled-out { grid-template-columns: 1fr; } .ruled-out > div { border-right: 0; } .panel-reading p { grid-template-columns: 1fr; gap: 3px; } .metric-pair { grid-template-columns: 1fr; } footer { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }