/* Shared palette and readable, dependency-free typography. */
:root {
  --ink: #142b2a;
  --muted: #526261;
  --paper: #f7f8f7;
  --line: #d9e0df;
  --accent-ink: #4e745b;
  --brand-surface: var(--ink);
  --accent-mint: #d5f3b8;
  --surface-soft: #f0f4f3;
  --text-on-dark: #c3d6d4;
  --line-on-dark: #425b59;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
  text-rendering: optimizeLegibility;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 24px; }
body { margin: 0; min-width: 320px; }
h1, h2, h3, p { margin: 0; }
p { line-height: 1.7; }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent-ink); }
a:focus-visible, summary:focus-visible { outline: 3px solid var(--accent-ink); outline-offset: 5px; }
em { font-style: normal; color: var(--accent-ink); }
.wrap { width: min(1200px, calc(100% - 96px)); margin-inline: auto; }
.eyebrow, .small-label, .tag { font-family: Consolas, 'Courier New', monospace; font-size: 10px; letter-spacing: 1.2px; line-height: 1.6; }
.small-label { display: block; font-size: 9px; font-weight: 700; }
.section-label { color: var(--accent-ink); margin-bottom: 20px; }
h2 { font-size: clamp(30px, 3.3vw, 44px); line-height: 1.15; font-weight: 500; letter-spacing: -1.5px; }
.button { display: inline-flex; align-items: center; justify-content: space-between; gap: 25px; padding: 18px 23px; background: var(--ink); color: white; font-size: 13px; font-weight: 600; line-height: 1.4; transition: background .2s, transform .2s; }
.button:hover { color: white; background: var(--accent-ink); transform: translateY(-2px); }
.button span { font-size: 18px; }
.text-link { display: inline-flex; align-items: center; gap: 12px; padding-block: 7px; border-bottom: 1px solid #9bb6b5; font-size: 12px; line-height: 1.5; }
.inline-link { text-decoration: underline; text-underline-offset: 4px; }
.skip-link { position: absolute; top: -90px; left: 16px; padding: 12px; background: var(--ink); color: white; z-index: 10; }
.skip-link:focus { top: 12px; }

/* First screen: one promise, one primary action, concrete credentials. */
.site-header { display: flex; justify-content: space-between; align-items: center; gap: 25px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.identity { display: flex; align-items: center; gap: 15px; font-size: 12px; font-weight: 700; letter-spacing: 1.4px; }
.monogram { font-family: Georgia, serif; font-size: 43px; font-weight: 400; letter-spacing: -5px; padding-right: 6px; }
.monogram span { color: var(--accent-ink); }
.degree { display: block; margin-top: 6px; font-size: 8px; font-weight: 400; letter-spacing: .9px; color: var(--muted); }
nav { display: flex; gap: 28px; align-items: center; font-size: 12px; }
nav a { padding-block: 9px; }
nav .nav-contact { display: flex; gap: 22px; padding: 12px 17px; background: var(--ink); color: white; }
nav .nav-contact:hover { background: var(--accent-ink); }
.hero { display: grid; grid-template-columns: 1.45fr 1fr; gap: 65px; align-items: center; padding-block: 72px 64px; }
.hero-copy > .eyebrow { display: flex; align-items: center; gap: 9px; }
.status-dot { width: 6px; height: 6px; background: var(--accent-ink); border-radius: 50%; }
h1 { font-size: clamp(45px, 5.2vw, 72px); font-weight: 600; letter-spacing: -3.5px; line-height: 1.04; margin-top: 26px; }
h1 em { font-weight: 400; }
.hero-intro { max-width: 540px; margin-top: 28px; font-size: 16px; color: var(--muted); }
.hero-intro strong { color: var(--ink); font-weight: 600; }
.hero-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 15px 24px; margin-top: 30px; }
.hero-actions .text-link { font-size: 11px; }
.hero-footnote { margin-top: 22px; font: 9px/1.6 Consolas, monospace; letter-spacing: .8px; color: var(--muted); }
.proof-panel { border: 1px solid var(--line); background: var(--surface-soft); padding: 26px 29px 0; position: relative; }
.proof-panel::before { content: ''; position: absolute; width: 45px; height: 4px; top: -1px; left: 29px; background: var(--accent-ink); }
.panel-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding-bottom: 23px; border-bottom: 1px solid var(--line); }
.panel-top .eyebrow { font-size: 8px; letter-spacing: .7px; }
.panel-top > span:last-child { font-size: 24px; }
.proof-item { padding-block: 25px; }
.proof-item + .proof-item { border-top: 1px solid var(--line); }
.proof-item .small-label { color: var(--accent-ink); }
.proof-item h2 { margin-top: 9px; font-size: 30px; letter-spacing: -.9px; }
.proof-item > p:not(.small-label) { margin-top: 8px; font-size: 14px; line-height: 1.5; }
.proof-item > span { display: block; margin-top: 12px; color: var(--muted); font-size: 12px; line-height: 1.65; }
.panel-bottom { display: flex; justify-content: space-between; gap: 12px; border-top: 1px solid var(--line); padding-block: 18px; font: 9px Consolas, monospace; }
.focus-strip { border-top: 1px solid var(--line); padding-block: 24px 36px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.focus-strip > span { font: 8px/1.7 Consolas, monospace; letter-spacing: 1px; color: var(--muted); }
.focus-strip > p { font-size: 13px; }

/* Industry proof receives its own high-contrast section. */
.industry-section { background: var(--ink); color: #f1f7f6; padding-block: 67px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 60px; margin-bottom: 35px; }
.section-heading > p { max-width: 355px; font-size: 14px; color: var(--muted); }
.industry-section .section-label { color: var(--accent-mint); }
.industry-section .section-heading > p { color: var(--text-on-dark); }
.industry-layout { display: grid; grid-template-columns: 1fr 1.2fr; gap: 72px; border-top: 1px solid var(--line-on-dark); padding-top: 35px; }
.industry-role .small-label { color: var(--accent-mint); }
.industry-role h3 { font-size: 28px; font-weight: 400; letter-spacing: -.5px; margin-block: 14px; }
.industry-role > p:not(.small-label) { color: var(--text-on-dark); font-size: 16px; max-width: 410px; }
.industry-role .text-link { margin-top: 25px; color: #d7e6d8; border-color: var(--line-on-dark); font-size: 11px; }
.industry-section a:hover { color: var(--accent-mint); }
.industry-section a:focus-visible { outline-color: var(--accent-mint); }
.industry-evidence article { display: flex; gap: 23px; padding-block: 20px; border-bottom: 1px solid var(--line-on-dark); }
.industry-evidence article:first-child { padding-top: 0; }
.industry-evidence article > span { color: var(--accent-mint); font: 10px/1.8 Consolas, monospace; }
.industry-evidence h3 { font-size: 18px; font-weight: 400; line-height: 1.4; }
.industry-evidence p { color: var(--text-on-dark); font-size: 13px; margin-top: 9px; }

/* Research previews lead with their practical meaning. */
.section { padding-block: 80px; }
.research-feature { display: grid; grid-template-columns: 1.65fr 1fr; background: var(--surface-soft); border: 1px solid var(--line); margin-bottom: 24px; }
.feature-story { padding: 38px; }
.feature-badges { display: flex; gap: 13px; align-items: center; flex-wrap: wrap; margin-bottom: 23px; }
.feature-badges .eyebrow { font-size: 8px; color: var(--accent-ink); }
.badge { background: #eaf0e3; color: var(--accent-ink); padding: 6px 8px; font: 8px/1.4 Consolas, monospace; letter-spacing: .6px; }
.feature-story h3 { font-size: 38px; line-height: 1.12; font-weight: 500; letter-spacing: -1.3px; }
.feature-story > p { margin-top: 20px; font-size: 15px; color: var(--muted); }
.feature-finding { margin-top: 22px; border-left: 3px solid var(--accent-mint); padding-left: 17px; }
.feature-finding .small-label { color: var(--accent-ink); }
.feature-finding p { margin-top: 7px; font-size: 14px; }
.feature-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 16px 22px; margin-top: 26px; }
.feature-actions .button { font-size: 12px; padding: 14px 17px; }
.feature-actions .text-link { font-size: 11px; }
.feature-note { margin: 38px 0; padding: 8px 30px; border-left: 1px solid var(--line); display: flex; flex-direction: column; }
.feature-note > .small-label { color: var(--accent-ink); margin-bottom: 12px; }
.method-step { display: flex; align-items: baseline; gap: 14px; padding-block: 18px; border-bottom: 1px solid var(--line); }
.method-step > span { font: 10px Consolas, monospace; color: var(--accent-ink); }
.method-step p { font-size: 15px; }
.method-step small { display: block; color: var(--muted); font-size: 11px; margin-top: 4px; }
.feature-citation { margin-top: auto; padding-top: 26px; font-size: 11px; color: var(--muted); }
.research-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.study-card { border: 1px solid var(--line); background: #fbfcfb; padding: 29px; display: flex; flex-direction: column; }
.study-top { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.study-top .eyebrow { font-size: 9px; color: var(--accent-ink); }
.study-top > span { font: 11px Consolas, monospace; color: var(--muted); }
.study-card h3 { font-size: 27px; line-height: 1.25; font-weight: 500; letter-spacing: -.6px; max-width: 390px; }
.study-card > p:not(.methods) { font-size: 14px; color: var(--muted); margin-top: 17px; }
.study-finding { margin-block: 22px; padding-top: 18px; border-top: 1px solid var(--line); }
.study-finding .small-label { color: var(--accent-ink); }
.study-finding p { font-size: 13px; margin-top: 7px; }
.methods { font: 10px/1.7 Consolas, monospace; color: var(--muted); margin-top: auto; margin-bottom: 22px; }
.study-bottom { display: flex; justify-content: space-between; align-items: flex-end; gap: 20px; border-top: 1px solid var(--line); padding-top: 15px; }
.study-bottom cite { font-size: 11px; line-height: 1.5; color: var(--muted); max-width: 230px; }
.study-bottom a { font-size: 12px; white-space: nowrap; text-decoration: underline; text-underline-offset: 4px; }

/* Bibliographic detail stays accessible without dominating the page. */
.bibliography { margin-top: 30px; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.bibliography > summary { padding-block: 22px; cursor: pointer; font-size: 16px; }
.summary-note { float: right; color: var(--muted); font-size: 11px; line-height: 1.8; }
.bibliography-content { padding-bottom: 25px; }
.bibliography-content > h3 { font-size: 21px; font-weight: 500; margin-top: 12px; }
.bibliography-intro { font-size: 12px; color: var(--muted); margin-block: 10px 20px; }
.publication-list { list-style: none; padding: 0; margin: 0; border-top: 1px solid var(--line); }
.publication-list > li { display: grid; grid-template-columns: 60px 1fr; gap: 24px; padding-block: 24px; border-bottom: 1px solid var(--line); }
.publication-year { font: 13px/1.7 Consolas, monospace; color: var(--accent-ink); }
.tag { font-size: 9px; color: var(--accent-ink); }
.publication-list h3, .conference-papers h3 { font-size: 17px; font-weight: 400; line-height: 1.5; margin-block: 8px; }
.publication-list h3 a:hover, .conference-papers h3 a:hover { text-decoration: underline; text-underline-offset: 4px; }
.publication-list p:not(.tag), .conference-papers p { font-size: 12px; color: var(--muted); }
.conference-papers { border-bottom: 1px solid var(--line); margin-top: 12px; }
.conference-papers summary { padding-block: 18px; cursor: pointer; font-size: 14px; }
.conference-papers summary > span { float: right; padding-right: 8px; }
.conference-papers[open] summary > span { transform: rotate(45deg); }
.conference-papers ul { list-style: none; padding: 0; margin: 0; }
.conference-papers li { border-top: 1px solid var(--line); padding-block: 20px; }
.research-more { margin-top: 18px; }

/* The personal story supports the consulting decision. */
.about-section { background: var(--surface-soft); padding-block: 63px; }
.about-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.about-layout h2 { font-size: 34px; line-height: 1.25; }
.about-copy p { font-size: 14px; color: var(--muted); }
.about-copy p + p { margin-top: 16px; }
.about-copy p:first-child { color: var(--ink); font-size: 16px; }
.about-links { display: flex; flex-wrap: wrap; gap: 25px; margin-top: 18px; }
.contact-section { margin-block: 65px 0; background: var(--ink); color: #f1f7f6; padding: 48px; display: flex; align-items: center; justify-content: space-between; gap: 40px; }
.contact-section .eyebrow { color: var(--accent-mint); margin-bottom: 20px; }
.contact-section h2 { font-size: 43px; }
.contact-section p:last-child { font-size: 15px; color: var(--text-on-dark); margin-top: 20px; }
.contact-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 13px; }
.contact-actions .button { background: var(--accent-mint); color: var(--ink); }
.contact-actions .button:hover { background: #e6ffcd; }
.destination-label { color: var(--text-on-dark); font: 9px/1.6 Consolas, monospace; letter-spacing: .8px; }
.academic-contact { color: var(--text-on-dark); font-size: 11px; text-decoration: underline; text-underline-offset: 4px; line-height: 1.6; margin-top: 12px; }
.academic-contact:hover { color: white; }
.contact-section a:focus-visible { outline-color: var(--accent-mint); }
footer { display: flex; align-items: center; flex-wrap: wrap; gap: 25px; padding-block: 30px; font-size: 11px; color: var(--muted); }
footer > span { margin-right: auto; }
.footer-name { color: var(--ink); font-weight: 600; }

@media (max-width: 1050px) {
  .wrap { width: calc(100% - 56px); }
  .hero { gap: 35px; grid-template-columns: 1.35fr 1fr; }
  h1 { font-size: 56px; letter-spacing: -2.8px; }
  .hero-intro { font-size: 15px; }
  .proof-panel { padding-inline: 22px; }
  .proof-item h2 { font-size: 27px; }
  nav { gap: 18px; font-size: 11px; }
  .industry-layout { gap: 40px; }
  .feature-story { padding: 28px; }
  .feature-note { padding-inline: 23px; }
  .study-card { padding: 25px; }
  .study-card h3 { font-size: 24px; }
  .about-layout { gap: 40px; }
  .about-layout h2 { font-size: 29px; }
}
@media (max-width: 800px) {
  .site-header { align-items: flex-start; }
  .identity { flex-shrink: 0; }
  .degree { font-size: 7px; }
  nav { max-width: 280px; flex-wrap: wrap; justify-content: flex-end; gap: 8px 18px; }
  .hero { grid-template-columns: 1fr; padding-top: 50px; }
  h1 { font-size: clamp(48px, 8.2vw, 68px); }
  .hero-intro { max-width: 620px; }
  .proof-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 0 24px; }
  .panel-top, .panel-bottom { grid-column: 1 / -1; }
  .proof-item + .proof-item { border-top: 0; }
  .focus-strip { flex-wrap: wrap; gap: 12px 25px; }
  .focus-strip > span { width: 100%; }
  .section-heading { gap: 30px; }
  .section-heading > p { max-width: 280px; }
  .research-feature { grid-template-columns: 1fr; }
  .feature-note { border-left: 0; border-top: 1px solid var(--line); margin: 0 28px 28px; padding: 24px 0 0; }
  .method-step { padding-block: 12px; }
  .summary-note { float: none; display: block; margin-top: 8px; }
  .contact-section { padding: 36px; flex-direction: column; align-items: flex-start; }
}
@media (max-width: 600px) {
  .wrap { width: calc(100% - 40px); }
  .site-header { flex-wrap: wrap; gap: 14px; padding-block: 18px; }
  nav { max-width: none; width: 100%; justify-content: space-between; gap: 6px 12px; }
  nav .nav-contact { padding: 10px 13px; gap: 12px; }
  .degree { font-size: 8px; }
  .hero { padding-block: 40px; gap: 32px; }
  h1 { font-size: clamp(41px, 9.2vw, 55px); letter-spacing: -2px; }
  .hero-copy > .eyebrow { font-size: 8px; letter-spacing: .8px; }
  .hero-intro { font-size: 15px; }
  .hero-actions { align-items: flex-start; flex-direction: column; gap: 15px; }
  .hero-footnote { font-size: 8px; }
  .proof-panel { grid-template-columns: 1fr; padding-inline: 22px; }
  .proof-item + .proof-item { border-top: 1px solid var(--line); }
  .proof-item { padding-block: 22px; }
  .proof-item > span br { display: none; }
  .focus-strip { gap: 11px; padding-bottom: 28px; }
  .focus-strip > p { width: 100%; font-size: 14px; }
  .section-heading { display: block; }
  .section-heading > p { max-width: none; margin-top: 20px; }
  .industry-section, .section { padding-block: 48px; }
  .industry-layout, .about-layout { grid-template-columns: 1fr; gap: 30px; }
  .industry-role > p:not(.small-label) { font-size: 15px; }
  .industry-evidence article { gap: 17px; }
  .industry-evidence h3 { font-size: 17px; }
  .research-grid { grid-template-columns: 1fr; gap: 18px; }
  .feature-story { padding: 24px; }
  .feature-story h3 { font-size: 32px; }
  .feature-story > p { font-size: 14px; }
  .feature-note { margin-inline: 24px; }
  .study-card { padding: 24px; }
  .study-card h3 { font-size: 26px; }
  .study-top .eyebrow { font-size: 8px; }
  .study-bottom { gap: 14px; }
  .publication-list > li { grid-template-columns: 1fr; gap: 8px; }
  .bibliography > summary { font-size: 15px; }
  .about-section { padding-block: 44px; }
  .about-layout h2 { font-size: 29px; }
  .contact-section { margin-top: 40px; padding: 28px 24px; gap: 28px; }
  .contact-section h2 { font-size: 33px; }
  .contact-section p:last-child { font-size: 14px; }
  .contact-section p br { display: none; }
  .contact-actions .button { font-size: 12px; padding-inline: 17px; gap: 17px; }
  footer { gap: 18px; font-size: 10px; }
  footer > span { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* Profile-backed results: retain the context of each metric. */
.proof-result h2 { display: flex; align-items: baseline; gap: 9px; }
.proof-stat { font-size: 70px; line-height: 1; font-weight: 500; letter-spacing: -4px; }
.proof-case-link { display: inline-flex; align-items: center; gap: 12px; margin-top: 16px; font-size: 11px; border-bottom: 1px solid #9bb6b5; padding-bottom: 5px; }
.industry-role .role-dates { font-size: 11px; color: var(--text-on-dark); margin-bottom: 17px; }
.industry-evidence .evidence-methods { font: 10px/1.7 Consolas, monospace; color: var(--accent-mint); }
.automation-case { display: grid; grid-template-columns: 1fr 1.2fr; gap: 45px; margin-top: 44px; padding: 32px; border: 1px solid var(--line-on-dark); background: var(--brand-surface); }
.automation-result { border-right: 1px solid var(--line-on-dark); padding-right: 28px; }
.automation-result .small-label { color: var(--accent-mint); }
.impact-number { font-size: 84px; font-weight: 500; line-height: 1.05; letter-spacing: -4px; color: var(--accent-mint); margin-top: 25px; }
.impact-number span { display: block; font-size: 22px; font-weight: 400; letter-spacing: -.4px; line-height: 1.5; margin-top: 7px; }
.automation-result > p:last-child { font-size: 13px; color: var(--text-on-dark); margin-top: 8px; }
.automation-story h3 { font-size: 28px; font-weight: 400; line-height: 1.2; letter-spacing: -.7px; }
.automation-story > p { margin-top: 17px; font-size: 14px; color: #e0eae8; }
.automation-story .automation-secondary { font-size: 12px; color: var(--text-on-dark); }
.automation-story .text-link { margin-top: 19px; color: var(--accent-mint); border-color: var(--line-on-dark); }
@media (max-width: 800px) {
  .automation-case { gap: 28px; padding: 28px; }
  .impact-number { font-size: 72px; }
}
@media (max-width: 600px) {
  .automation-case { grid-template-columns: 1fr; padding: 23px; margin-top: 32px; }
  .automation-result { border-right: 0; border-bottom: 1px solid var(--line-on-dark); padding-right: 0; padding-bottom: 23px; }
  .automation-story h3 { font-size: 26px; }
  .proof-stat { font-size: 62px; }
}

/* Dedicated teaching page; shared site components keep the visual identity. */
nav a[aria-current="page"] { color: var(--accent-ink); text-decoration: underline; text-underline-offset: 6px; }
.teaching-hero { padding-block: 32px 65px; }
.teaching-intro-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 65px; align-items: end; margin-top: 45px; }
.teaching-intro-grid h1 { font-size: clamp(40px, 4.6vw, 62px); margin-top: 0; letter-spacing: -2.5px; }
.teaching-intro-copy p { font-size: 15px; color: var(--muted); }
.teaching-intro-copy p:first-child { font-size: 20px; color: var(--ink); line-height: 1.5; margin-bottom: 18px; }
.teaching-subjects { padding-block: 55px 70px; border-top: 1px solid var(--line); }
.teaching-course-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.teaching-course-grid h3 { font-size: 25px; }
.teaching-course-grid .methods { padding-top: 24px; margin-bottom: 0; }
.teaching-perspective { display: grid; grid-template-columns: 1fr 1.2fr; gap: 65px; }
.teaching-recognition { margin-top: 25px; border-left: 3px solid var(--accent-mint); padding-left: 18px; }
.teaching-recognition .small-label { font-size: 9px; color: var(--accent-ink); }
.teaching-recognition p + p { margin-top: 8px; }
.teaching-contact { margin-top: 0; }
@media (max-width: 900px) {
  .teaching-intro-grid { gap: 30px; }
  .teaching-course-grid { grid-template-columns: 1fr; }
  .teaching-course-grid h3 { max-width: none; }
}
@media (max-width: 600px) {
  .teaching-hero { padding-block: 25px 40px; }
  .teaching-intro-grid { grid-template-columns: 1fr; margin-top: 30px; }
  .teaching-intro-grid h1 { font-size: 40px; letter-spacing: -1.8px; }
  .teaching-intro-copy p:first-child { font-size: 19px; }
  .teaching-subjects { padding-block: 40px; }
  .teaching-perspective { grid-template-columns: 1fr; gap: 25px; }
}

/* Teaching resources and dated university news. */
.teaching-channel { display: flex; align-items: center; gap: 25px; background: var(--surface-soft); border: 1px solid var(--line); padding: 28px; }
.channel-play { display: grid; place-items: center; width: 52px; height: 52px; flex-shrink: 0; background: var(--ink); color: var(--accent-mint); border-radius: 50%; font-size: 19px; }
.teaching-channel > div { flex: 1; }
.teaching-channel .section-label { margin-bottom: 8px; font-size: 9px; }
.teaching-channel h2 { font-size: 25px; letter-spacing: -.6px; }
.teaching-channel p:last-child { margin-top: 9px; font-size: 13px; color: var(--muted); }
.teaching-channel .button { flex-shrink: 0; font-size: 12px; }
.news-card .study-top time { font: 10px/1.6 Consolas, monospace; color: var(--muted); white-space: nowrap; }
.news-card .study-bottom { margin-top: auto; }
.news-card > p { margin-bottom: 25px; }
.news-card .study-bottom > span { font-size: 10px; color: var(--muted); line-height: 1.6; max-width: 190px; }
.news-card .study-bottom a { font-size: 11px; }
@media (max-width: 900px) {
  .teaching-channel { flex-wrap: wrap; }
  .teaching-channel .button { margin-left: 77px; }
}
@media (max-width: 600px) {
  .teaching-channel { padding: 23px; gap: 18px; align-items: flex-start; }
  .channel-play { width: 40px; height: 40px; font-size: 15px; }
  .teaching-channel > div { min-width: 180px; }
  .teaching-channel h2 { font-size: 24px; }
  .teaching-channel .button { margin-left: 0; }
  .news-card .study-top { flex-wrap: wrap; gap: 8px; }
  .news-card .study-bottom { flex-wrap: wrap; gap: 12px; }
}

/* Authorship remains visible in previews as well as complete citations. */
.author-role { display: inline-block; width: fit-content; padding: 5px 9px; background: var(--ink); color: var(--accent-mint); font: 700 9px/1.5 Consolas, monospace; letter-spacing: .7px; }
.study-card > .author-role { margin-bottom: 13px; }
#research .section-heading > p > strong { color: var(--ink); font-weight: 600; }

/* The original portrait introduces Jingze alongside concise evidence. */
.proof-panel.portrait-panel { display: block; padding: 0; overflow: hidden; }
.portrait-panel::before { display: none; }
.profile-portrait { margin: 0; display: flex; align-items: center; gap: 17px; padding: 20px 23px; }
.portrait-crop { display: block; position: relative; width: 88px; height: 88px; flex-shrink: 0; overflow: hidden; border-radius: 50%; background: #363638; }
.profile-portrait .portrait-crop img { display: block; position: absolute; width: 220px; max-width: none; height: 176px; left: 50%; top: -12px; transform: translateX(-50%); }
.profile-portrait figcaption { padding: 0; }
.profile-portrait figcaption strong { display: block; font-size: 20px; font-weight: 500; letter-spacing: -.4px; }
.profile-portrait figcaption > span { display: block; margin-top: 7px; font-size: 10px; line-height: 1.6; color: var(--muted); }
.portrait-credentials { display: grid; grid-template-columns: 1fr 1fr; padding: 21px 23px; gap: 20px; }
.portrait-credentials .proof-item { padding: 0; min-width: 0; }
.portrait-credentials .proof-item + .proof-item { border-top: 0; border-left: 1px solid var(--line); padding-left: 20px; }
.portrait-credentials .small-label { font-size: 8px; letter-spacing: .6px; }
.portrait-credentials h2 { font-size: 21px; margin-top: 10px; }
.portrait-credentials .proof-stat { font-size: 35px; letter-spacing: -1.5px; }
.portrait-credentials .proof-result h2 { gap: 5px; font-size: 15px; }
.portrait-credentials .proof-item > p:not(.small-label) { font-size: 11px; line-height: 1.6; }
.portrait-credentials .proof-case-link { font-size: 10px; margin-top: 12px; gap: 8px; }
@media (max-width: 800px) {
  .portrait-panel { width: 100%; max-width: 480px; justify-self: center; }
}
@media (max-width: 600px) {
  .profile-portrait { padding: 18px; gap: 13px; }
  .profile-portrait figcaption strong { font-size: 18px; }
  .portrait-credentials { padding: 20px 18px; gap: 14px; }
  .portrait-credentials .proof-item + .proof-item { padding-left: 14px; }
  .portrait-credentials h2 { font-size: 20px; }
}

/* Compact portrait, restored mathematical illustration, and scannable evidence. */
.research-art { margin: 0; padding: 15px 20px; background: #101f20; color: var(--text-on-dark); background-image: radial-gradient(#718f7b22 .7px, transparent .7px); background-size: 16px 16px; }
.art-top { display: flex; justify-content: space-between; gap: 15px; font: 8px/1.6 Consolas, monospace; letter-spacing: 1px; }
.research-art svg { display: block; width: 100%; height: 225px; }
.research-art figcaption { border-top: 1px solid var(--line-on-dark); padding-top: 10px; font: 9px/1.7 Consolas, monospace; }
#experience .industry-evidence ul { margin: 12px 0 0; padding-left: 18px; color: var(--text-on-dark); font-size: 13px; line-height: 1.65; }
#experience .industry-evidence li + li { margin-top: 8px; }
#experience .industry-evidence li::marker { color: var(--accent-mint); }
#experience .industry-evidence li strong { color: #f1f7f6; font-weight: 600; }
#experience .industry-evidence li.evidence-methods { font: inherit; color: inherit; }

/* Dark glass is reserved for research, automation, and student research evidence. */
:is(#research .study-card, .news-card),
.automation-case {
  --muted: var(--text-on-dark);
  --accent-ink: var(--accent-mint);
  --line: rgba(213, 243, 184, .2);
  color: #f1f7f6;
  background: var(--brand-surface);
  background: linear-gradient(135deg, rgba(213, 243, 184, .07), transparent 65%),
    color-mix(in srgb, var(--brand-surface) 90%, transparent);
  border: 1px solid color-mix(in srgb, var(--accent-mint) 28%, transparent);
  border-radius: 14px;
  -webkit-backdrop-filter: blur(16px);
  backdrop-filter: blur(16px);
  box-shadow: 0 8px 24px rgba(10, 29, 26, .09), inset 0 1px 0 rgba(255, 255, 255, .04);
  transition: transform 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}
:is(#research .study-card, .news-card) .methods { color: var(--muted); }
:is(#research .study-card, .news-card) .author-role { border: 1px solid color-mix(in srgb, var(--accent-mint) 30%, transparent); }
:is(#research .study-card, .news-card) a,
.automation-case .text-link { color: var(--accent-mint); }
:is(#research .study-card, .news-card) a:hover,
.automation-case .text-link:hover { color: #f0ffe5; }
:is(#research .study-card, .news-card) a:focus-visible,
.automation-case a:focus-visible { outline-color: var(--accent-mint); }
.automation-case .automation-result { border-color: var(--line); }
.automation-case .automation-result .small-label { color: var(--accent-mint); }
.automation-case .text-link { border-color: color-mix(in srgb, var(--accent-mint) 40%, transparent); }
:is(#research .study-card, .news-card):focus-within,
.automation-case:focus-within {
  border-color: var(--accent-mint);
  box-shadow: 0 12px 28px rgba(10, 29, 26, .16), 0 0 0 1px rgba(213, 243, 184, .12);
}
@media (hover: hover) and (pointer: fine) {
  :is(#research .study-card, .news-card):hover,
  .automation-case:hover {
    transform: translateY(-3px);
    border-color: var(--accent-mint);
    box-shadow: 0 16px 32px rgba(10, 29, 26, .18), inset 0 1px 0 rgba(213, 243, 184, .14);
  }
}
@media (prefers-reduced-motion: reduce) {
  :is(#research .study-card, .news-card),
  .automation-case { transition: none; }
  :is(#research .study-card, .news-card):hover,
  .automation-case:hover { transform: none; }
}

/* About: three light features keep the supporting biography quiet. */
.about-intro { max-width: 760px; margin-top: 20px; color: var(--muted); font-size: 15px; }
.about-feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin-top: 32px; }
.about-feature { min-width: 0; }
.about-feature h3 { font-size: 25px; }
.about-feature > p { margin-bottom: 24px; }
.about-feature .text-link { align-self: flex-start; margin-top: auto; }
#about .about-links { display: flex; flex-wrap: wrap; gap: 24px; margin-top: 28px; }
@media (max-width: 900px) {
  .about-feature-grid { grid-template-columns: 1fr; }
}

/* Homepage: fewer competing surfaces, more space around the main evidence. */
#home { padding-block: 88px; }
#home .portrait-panel { background: transparent; border-color: var(--line); border-radius: 14px; }
#home .research-art { background-image: none; }
#home .research-art svg { height: 260px; }
#home .research-art figcaption { border: 0; }
#experience { padding-block: 88px; }
#research { padding-block: 88px; }
#research .research-feature { border-radius: 14px; overflow: hidden; }
#research .study-card { padding: 30px; }
:is(#research .study-card, .news-card) { box-shadow: none; }
#research .study-card h3 { font-size: 25px; }
#research .study-finding { border-top: 0; padding-top: 0; margin-block: 20px; }
#research .study-finding .small-label { display: none; }
.research-additional { margin-top: 28px; border-block: 1px solid var(--line); }
.research-additional > summary { padding-block: 22px; cursor: pointer; font-size: 16px; }
.research-additional[open] > summary { margin-bottom: 6px; }
.research-additional > .research-grid { padding-bottom: 28px; }
#research .bibliography { margin-top: 0; border-top: 0; }
#about { background: var(--paper); border-top: 1px solid var(--line); padding-block: 72px; }
#about .about-feature-grid { gap: 18px; }
#about .about-feature { padding: 26px; box-shadow: none; }
#about .about-feature h3 { font-size: 22px; }
#contact { margin-top: 0; }
.contact-section, .teaching-channel { border-radius: 14px; }
@media (max-width: 800px) {
  #home { padding-block: 48px; }
  #experience, #research, #about { padding-block: 56px; }
}
@media (max-width: 600px) {
  .research-additional .summary-note { display: block; float: none; margin-top: 6px; }
  #research .study-card, #about .about-feature { padding: 24px; }
}

/* Original mint highlights on dark surfaces; deeper green on light surfaces. */
.text-link, .inline-link { color: var(--accent-ink); }
.text-link:hover, .inline-link:hover { color: var(--ink); }
.industry-role .text-link { color: var(--accent-mint); }
#home .hero-actions .button { background: var(--accent-mint); color: var(--ink); }
#home .hero-actions .button:hover { background: #e6ffcd; }
#about .about-feature, .teaching-course-grid .study-card { background: transparent; border: 0; border-top: 1px solid var(--line); border-radius: 0; }
.research-art #surface stop:first-child { stop-color: #66ac9d; }
.research-art #surface stop:nth-child(2) { stop-color: var(--accent-mint); }
.research-art #surface stop:last-child { stop-color: #dbfaaf; }
.research-art #glow stop { stop-color: var(--accent-mint); }
.research-art .surface-points { fill: var(--accent-mint); }