:root { --text: #202124; --muted: #5f6368; --link: #1a56a3; --line: #dadce0; }
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: #fff; color: var(--text); font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, "Noto Sans", sans-serif; font-size: 16px; line-height: 1.65; -webkit-font-smoothing: antialiased; }
a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
main { width: min(900px, calc(100% - 40px)); margin: 0 auto; }
.site-header { display: flex; align-items: center; justify-content: space-between; min-height: 72px; border-bottom: 1px solid var(--line); }
.site-name { color: var(--text); font-size: 17px; font-weight: 650; }
.site-name:hover { text-decoration: none; }
nav { display: flex; gap: 24px; font-size: 14px; }
nav a { color: var(--muted); }
.intro { padding: 70px 0 54px; }
.intro h1 { margin: 0 0 4px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(38px, 7vw, 54px); line-height: 1.15; font-weight: 500; letter-spacing: -.02em; }
.intro h1 span { margin-left: 10px; color: var(--muted); font-family: "Noto Serif SC", "Songti SC", SimSun, serif; font-size: .55em; font-weight: 400; }
.role { margin-top: 0 !important; color: var(--muted); }
.intro > p { max-width: 760px; margin: 20px 0 0; }
.profile-links { display: flex; flex-wrap: wrap; gap: 8px 20px; margin-top: 26px; font-size: 14px; }
.email-links { display: inline-flex; flex-wrap: wrap; gap: 0 5px; }
section { padding: 42px 0; border-top: 1px solid var(--line); scroll-margin-top: 20px; }
h2 { margin: 0 0 24px; font-family: Georgia, "Times New Roman", serif; font-size: 28px; line-height: 1.3; font-weight: 500; }
.selected-list { display: grid; }
.selected-item { padding: 24px 0; border-top: 1px solid #eceff1; }
.selected-item:first-child { padding-top: 0; border-top: 0; }
.selected-item h3, .publication-list h3 { margin: 0; font-size: 17px; line-height: 1.45; font-weight: 650; }
.project-title-link { color: inherit; }
.selected-item p { max-width: 800px; margin: 8px 0 0; }
.meta, .section-note, .authors, .venue-line { color: var(--muted); font-size: 14px; }
.selected-item .meta { margin-top: 3px; }
.item-links { display: flex; flex-wrap: wrap; gap: 5px 14px; font-size: 13px; }
.section-title-row { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; }
.section-title-row h2 { margin-bottom: 0; }
.section-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px 18px; font-size: 14px; }
.section-actions a { white-space: nowrap; }
.section-note { max-width: 720px; margin: 8px 0 28px; }
.publication-list { list-style: none; padding: 0; margin: 0; }
.publication-list > li { display: grid; grid-template-columns: 54px 1fr; gap: 16px; padding: 19px 0; border-top: 1px solid #eceff1; }
.publication-list > li:first-child { border-top-color: var(--line); }
.year { padding-top: 2px; color: var(--muted); font-size: 13px; font-variant-numeric: tabular-nums; }
.publication-list p { margin: 3px 0 0; line-height: 1.5; }
.authors strong { color: var(--text); font-weight: 650; }
.venue-line em { color: var(--text); }
.bibtex { margin-top: 8px; font-size: 13px; }
.bibtex summary { width: fit-content; color: var(--link); cursor: pointer; }
.bibtex pre { max-width: 100%; margin: 9px 0 0; padding: 13px 15px; overflow-x: auto; border: 1px solid #e2e5e8; border-radius: 3px; background: #f8f9fa; color: #303134; font: 12px/1.55 ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace; white-space: pre; }
.timeline { margin: 0; }
.timeline > div { display: grid; grid-template-columns: 130px 1fr; gap: 20px; padding: 15px 0; border-top: 1px solid #eceff1; }
.timeline > div:first-child { border-top-color: var(--line); }
.timeline dt { color: var(--muted); font-size: 14px; }
.timeline dd { margin: 0; }
.timeline dd strong, .timeline dd span { display: block; }
.timeline dd span { color: var(--muted); font-size: 14px; }
footer { display: flex; justify-content: space-between; padding: 30px 0 48px; border-top: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.project-shell { width: min(1080px, calc(100% - 40px)); --project: #315a7d; --project-soft: #f3f7fa; --project-mid: #dce7ef; }
.project-sl { --project: #8a3f64; --project-soft: #fbf4f7; --project-mid: #efdce5; }
.project-dcd { --project: #126b73; --project-soft: #f0f8f8; --project-mid: #d5eaea; }
.project-ivg { --project: #4d681f; --project-soft: #f6f8f0; --project-mid: #e3ead4; }
.project-header { padding: 58px 0 30px; }
.back-link { display: inline-block; margin-bottom: 20px; font-size: 14px; }
.project-kicker { margin: 0 0 8px; color: var(--project); font-size: 12px; font-weight: 700; letter-spacing: .09em; text-transform: uppercase; }
.project-header h1 { max-width: 900px; margin: 0; font-family: Georgia, "Times New Roman", serif; font-size: clamp(34px, 5.8vw, 52px); line-height: 1.14; font-weight: 500; letter-spacing: -.025em; }
.project-header .meta { margin: 9px 0 0; }
.project-lead { max-width: 850px; margin: 20px 0 0; color: #3c4043; font-size: 18px; line-height: 1.62; }
.project-topics { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 22px; }
.project-topics span { padding: 4px 10px; border: 1px solid var(--project-mid); border-radius: 999px; background: var(--project-soft); color: var(--project); font-size: 12px; font-weight: 600; }
.project-toc { display: flex; gap: 7px 22px; margin-top: 28px; padding-top: 17px; border-top: 1px solid var(--line); font-size: 13px; }
.project-toc a { color: var(--muted); }
.project-content .poster-section { padding: 48px 0; }
.section-heading { display: flex; align-items: baseline; gap: 12px; margin-bottom: 25px; }
.section-heading > span { color: var(--project); font-size: 12px; font-weight: 800; letter-spacing: .12em; }
.project-content .section-heading h2 { margin: 0; font-size: 28px; }
.project-content p { margin: 0; }
.question-grid { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(260px, .85fr); gap: 30px; align-items: stretch; }
.question-statement { max-width: 730px; font-family: Georgia, "Times New Roman", serif; font-size: clamp(25px, 4vw, 35px); line-height: 1.35; letter-spacing: -.012em; }
.question-statement em { color: var(--project); font-style: normal; }
.poster-callout { padding: 22px; border-left: 3px solid var(--project); background: var(--project-soft); }
.callout-label { display: block; margin-bottom: 9px; color: var(--project); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.poster-callout p { color: #41464b; font-size: 14px; line-height: 1.62; }
.idea-grid, .evidence-grid, .implementation-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; margin-top: 28px; }
.idea-grid article, .evidence-grid article, .implementation-grid article { padding: 19px 20px; border: 1px solid #e3e6e8; border-radius: 4px; background: #fff; }
.idea-index { display: inline-grid; width: 25px; height: 25px; place-items: center; margin-bottom: 13px; border-radius: 50%; background: var(--project-soft); color: var(--project); font-size: 11px; font-weight: 800; }
.idea-grid h3, .method-node h3, .implementation-grid h3 { margin: 0 0 6px; font-size: 15px; line-height: 1.4; }
.idea-grid p, .evidence-grid p, .implementation-grid p { color: var(--muted); font-size: 13px; line-height: 1.55; }
.method-board { padding: 27px; border: 1px solid var(--project-mid); border-radius: 6px; background: linear-gradient(145deg, var(--project-soft), #fff 62%); }
.method-board + .method-board { margin-top: 18px; }
.board-title { display: flex; align-items: baseline; justify-content: space-between; gap: 18px; margin-bottom: 23px; }
.board-title span { color: var(--project); font-size: 11px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.board-title strong { font-family: Georgia, "Times New Roman", serif; font-size: 20px; font-weight: 500; text-align: right; }
.method-track { display: grid; gap: 24px; }
.method-track-four { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.method-track-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.method-node { position: relative; min-height: 145px; padding: 18px; border: 1px solid #dfe3e6; border-radius: 4px; background: rgba(255,255,255,.9); }
.method-node + .method-node::before { content: "→"; position: absolute; left: -20px; top: 50%; color: var(--project); font-size: 19px; font-weight: 700; transform: translate(-50%, -50%); }
.method-node-accent { border-color: var(--project); box-shadow: inset 0 3px 0 var(--project); }
.node-step { display: inline-grid; width: 22px; height: 22px; place-items: center; margin-bottom: 12px; border-radius: 50%; background: var(--project); color: #fff; font-size: 10px; font-weight: 800; }
.method-node p { color: var(--muted); font-size: 12.5px; line-height: 1.5; }
.board-rule { display: grid; grid-template-columns: 110px 1fr; gap: 15px; margin-top: 20px; padding: 14px 17px; border-top: 1px solid var(--project-mid); background: rgba(255,255,255,.55); }
.board-rule span { color: var(--project); font-size: 11px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.board-rule p { font-size: 13px; }
.control-board { background: #fff; }
.flow-comparison { display: grid; gap: 13px; }
.flow-row { display: grid; grid-template-columns: 145px minmax(155px, 1fr) 24px minmax(155px, 1fr) 24px minmax(155px, 1fr); gap: 8px; align-items: center; padding: 15px; border: 1px solid #e1e4e6; border-radius: 4px; background: #fff; }
.flow-ours { border-color: var(--project); background: var(--project-soft); }
.flow-label span { display: block; color: var(--muted); font-size: 10px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.flow-label strong { display: block; margin-top: 2px; font-size: 13px; }
.flow-node { min-height: 91px; padding: 13px; border: 1px solid #dfe3e6; border-radius: 4px; background: #fff; text-align: center; }
.flow-node small, .flow-node span { display: block; color: var(--muted); font-size: 10.5px; }
.flow-node strong { display: block; margin: 6px 0 4px; font-size: 13px; line-height: 1.3; }
.flow-node-warn { border-color: #d7a148; background: #fffaf0; }
.flow-node-accent { border-color: var(--project); }
.flow-output { background: #f8f9fa; }
.flow-arrow { color: var(--project); font-size: 20px; text-align: center; }
.equation-strip { display: grid; grid-template-columns: 120px auto 1fr; gap: 18px; align-items: center; margin-top: 18px; padding: 15px 17px; background: #fff; border: 1px solid var(--project-mid); }
.equation-strip > span { color: var(--project); font-size: 11px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; }
.equation-strip code { color: #24282c; font: 15px/1.4 Georgia, "Times New Roman", serif; white-space: nowrap; }
.equation-strip p { color: var(--muted); font-size: 12px; }
.implementation-grid article > span { display: block; margin-bottom: 8px; color: var(--project); font-size: 10px; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.hero-result { display: grid; grid-template-columns: 1fr 50px 1fr 1fr; gap: 20px; align-items: center; padding: 26px 28px; border: 1px solid var(--project-mid); background: var(--project-soft); }
.hero-result > div:not(.result-badge) { display: grid; }
.result-number { font-family: Georgia, "Times New Roman", serif; font-size: clamp(37px, 6vw, 54px); line-height: 1; font-variant-numeric: tabular-nums; }
.result-number-accent { color: var(--project); }
.result-caption { margin-top: 8px; color: var(--muted); font-size: 12px; }
.result-arrow { color: var(--project); font-size: 30px; text-align: center; }
.result-badge { justify-self: end; padding: 14px 18px; border-left: 2px solid var(--project); background: #fff; }
.result-badge strong, .result-badge span { display: block; }
.result-badge strong { color: var(--project); font-size: 24px; }
.result-badge span { color: var(--muted); font-size: 11px; }
.bar-comparison { display: grid; gap: 12px; margin-top: 25px; }
.bar-row { display: grid; grid-template-columns: 130px 1fr 58px; gap: 13px; align-items: center; font-size: 12px; }
.bar-track { height: 12px; overflow: hidden; border-radius: 2px; background: #edf0f2; }
.bar-track i { display: block; width: var(--bar); height: 100%; background: #afb7bd; }
.bar-track .bar-accent { background: var(--project); }
.bar-row strong { font-variant-numeric: tabular-nums; text-align: right; }
.evidence-grid article strong { display: block; margin-bottom: 5px; font-size: 14px; }
.metric-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.metric-grid article { padding: 23px; border-top: 3px solid var(--project); background: var(--project-soft); }
.metric-value { display: block; margin-bottom: 14px; color: var(--project); font-family: Georgia, "Times New Roman", serif; font-size: clamp(29px, 4.6vw, 40px); line-height: 1; }
.metric-grid strong { display: block; margin-bottom: 5px; font-size: 14px; }
.metric-grid p { color: var(--muted); font-size: 12px; line-height: 1.5; }
.chart-card { margin-top: 20px; padding: 23px 25px; border: 1px solid #e1e5e7; }
.chart-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 20px; margin-bottom: 20px; }
.chart-heading strong { font-size: 15px; }
.chart-heading span { color: var(--muted); font-size: 11px; }
.chart-card .bar-comparison { margin-top: 0; }
.chart-note { margin-top: 18px !important; color: var(--muted); font-size: 12px; line-height: 1.55; }
.evaluation-strip { display: grid; grid-template-columns: repeat(5, 1fr); margin-top: 20px; border: 1px solid var(--project-mid); }
.evaluation-strip span { padding: 15px 9px; color: var(--muted); font-size: 11px; text-align: center; }
.evaluation-strip span + span { border-left: 1px solid var(--project-mid); }
.evaluation-strip strong { display: block; color: var(--project); font-size: 17px; }
.ivg-source { width: 270px; margin: 0 auto 24px; padding: 16px; border: 1px solid var(--project); background: #fff; text-align: center; }
.ivg-source span, .ivg-source p { display: block; color: var(--muted); font-size: 10.5px; }
.ivg-source strong { display: block; margin: 4px 0; font-size: 15px; }
.ivg-branches { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; position: relative; }
.ivg-branches::before { content: ""; position: absolute; left: 25%; right: 25%; top: -24px; height: 24px; border-left: 1px solid var(--project); border-right: 1px solid var(--project); border-top: 1px solid var(--project); }
.ivg-branch { display: grid; justify-items: center; padding: 20px; border: 1px solid var(--project-mid); background: #fff; }
.branch-label { margin-bottom: 12px; color: var(--project); font-size: 11px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.branch-step { width: min(100%, 270px); padding: 11px 14px; border: 1px solid #e0e4e6; background: #f8f9fa; text-align: center; }
.branch-step small, .branch-step strong { display: block; }
.branch-step small { color: var(--muted); font-size: 9px; text-transform: uppercase; }
.branch-step strong { margin-top: 2px; font-size: 12px; }
.branch-arrow { color: var(--project); line-height: 1.7; }
.branch-output { width: min(100%, 300px); padding: 14px; border: 1px solid var(--project); background: var(--project-soft); text-align: center; }
.branch-output strong, .branch-output span { display: block; }
.branch-output strong { font-size: 13px; }
.branch-output span { margin-top: 4px; color: var(--muted); font-size: 10px; }
.ivg-merge { margin-top: 20px; padding: 18px; border: 1px solid var(--project); background: var(--project); color: #fff; text-align: center; }
.ivg-merge span, .ivg-merge strong, .ivg-merge p { display: block; }
.ivg-merge span { font-size: 9px; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; opacity: .8; }
.ivg-merge strong { margin: 4px 0; font-size: 14px; }
.ivg-merge p { font-size: 11px; opacity: .8; }
.paired-bars { display: grid; gap: 24px; }
.paired-group { display: grid; gap: 8px; }
.paired-label { font-size: 12px; font-weight: 650; }
.resource-panel { display: flex; align-items: center; justify-content: space-between; gap: 25px; padding: 24px 26px; border: 1px solid var(--project-mid); background: var(--project-soft); }
.resource-panel strong { display: block; font-size: 17px; }
.resource-panel p { margin-top: 4px; color: var(--muted); font-size: 13px; }
.resource-status { flex: 0 0 auto; padding: 6px 11px; border: 1px solid var(--project); border-radius: 999px; color: var(--project); font-size: 11px; font-weight: 700; }
.resource-panel + .resource-links { margin-top: 14px; }
.resource-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.resource-links a { display: block; padding: 22px; border: 1px solid var(--project-mid); background: var(--project-soft); color: var(--text); }
.resource-links a:hover { border-color: var(--project); text-decoration: none; }
.resource-links span, .resource-links strong { display: block; }
.resource-links span { color: var(--muted); font-size: 11px; }
.resource-links strong { margin-top: 7px; color: var(--project); font-size: 15px; }
@media (max-width: 650px) {
  main { width: min(100% - 30px, 900px); }
  .site-header { align-items: flex-start; padding: 18px 0; gap: 20px; }
  nav { justify-content: flex-end; flex-wrap: wrap; gap: 6px 14px; }
  .site-header > nav a:nth-child(3) { display: none; }
  .intro { padding: 50px 0 40px; }
  .project-shell { width: min(100% - 30px, 1080px); }
  .project-header { padding: 42px 0 26px; }
  .project-lead { font-size: 16px; }
  .project-toc { gap: 7px 14px; overflow-x: auto; white-space: nowrap; }
  .project-content .poster-section { padding: 38px 0; }
  .question-grid, .idea-grid, .evidence-grid, .implementation-grid, .metric-grid, .resource-links, .ivg-branches { grid-template-columns: 1fr; }
  .question-grid { gap: 20px; }
  .method-board { padding: 20px 16px; }
  .board-title { display: block; }
  .board-title strong { display: block; margin-top: 5px; text-align: left; }
  .method-track-four, .method-track-three { grid-template-columns: 1fr; }
  .method-node { min-height: 0; }
  .method-node + .method-node::before { content: "↓"; left: 50%; top: -15px; }
  .board-rule { grid-template-columns: 1fr; gap: 5px; }
  .flow-row { grid-template-columns: 1fr; }
  .flow-label { margin-bottom: 4px; }
  .flow-arrow { transform: rotate(90deg); }
  .equation-strip { grid-template-columns: 1fr; gap: 7px; }
  .hero-result { grid-template-columns: 1fr 35px 1fr; padding: 22px 18px; }
  .result-badge { grid-column: 1 / -1; justify-self: stretch; }
  .bar-row { grid-template-columns: 88px 1fr 48px; gap: 8px; }
  .evaluation-strip { grid-template-columns: repeat(2, 1fr); }
  .evaluation-strip span + span { border-left: 0; }
  .evaluation-strip span:nth-child(even) { border-left: 1px solid var(--project-mid); }
  .evaluation-strip span:nth-child(n+3) { border-top: 1px solid var(--project-mid); }
  .ivg-source { width: 100%; }
  .ivg-branches::before { display: none; }
  .resource-panel { align-items: flex-start; flex-direction: column; }
  .chart-heading { display: block; }
  .chart-heading span { display: block; margin-top: 3px; }
  section { padding: 34px 0; }
  .publication-list > li, .timeline > div { grid-template-columns: 1fr; gap: 3px; }
  .section-title-row { align-items: flex-start; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }