@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Libre+Franklin:wght@400;500;600&family=Playfair+Display:ital,wght@0,600;1,600&display=swap");

:root {
  --ink: #172522;
  --ink-soft: #53625d;
  --paper: #f4f1e9;
  --paper-deep: #e9e4d8;
  --white: #fffdf8;
  --accent: #c5532d;
  --accent-dark: #96391c;
  --line: rgba(23, 37, 34, 0.16);
  --serif: "Playfair Display", Georgia, serif;
  --sans: "DM Sans", Arial, sans-serif;
  --body: "Libre Franklin", Arial, sans-serif;
  --container: min(1180px, calc(100vw - 48px));
  --radius: 2px;
  --shadow: 0 20px 60px rgba(23, 37, 34, 0.1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background:
    linear-gradient(90deg, transparent calc(50% - .5px), rgba(23,37,34,.04) 50%, transparent calc(50% + .5px)),
    var(--paper);
  font-family: var(--body);
  line-height: 1.7;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: .22;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.12'/%3E%3C/svg%3E");
  z-index: 20;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
::selection { color: var(--white); background: var(--accent); }

.skip-link {
  position: fixed;
  left: 12px;
  top: -80px;
  z-index: 100;
  padding: 10px 16px;
  background: var(--ink);
  color: var(--white);
}
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 15;
  background: rgba(244, 241, 233, .92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.nav-shell {
  width: var(--container);
  min-height: 80px;
  margin: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-family: var(--sans);
  font-weight: 700;
  letter-spacing: -.02em;
}
.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  color: var(--white);
  background: var(--ink);
  font-size: .77rem;
  letter-spacing: .08em;
}
.brand small {
  display: block;
  color: var(--ink-soft);
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 26px;
}
.site-nav a {
  position: relative;
  text-decoration: none;
  font-family: var(--sans);
  font-size: .77rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 2px;
  background: var(--accent);
  transition: right .25s ease;
}
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { right: 0; }
.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  color: var(--ink);
  background: transparent;
  cursor: pointer;
}
.menu-toggle span,
.menu-toggle::before,
.menu-toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 1px;
  margin: 5px auto;
  background: currentColor;
}

.container { width: var(--container); margin-inline: auto; }
.page-hero {
  padding: clamp(80px, 10vw, 150px) 0 68px;
  border-bottom: 1px solid var(--line);
}
.page-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(240px, .5fr);
  gap: 70px;
  align-items: end;
}
.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  color: var(--accent-dark);
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}
.eyebrow::before { content: ""; width: 34px; height: 1px; background: currentColor; }
h1, h2, h3, p { margin-top: 0; }
h1, h2 {
  font-family: var(--serif);
  font-weight: 600;
  letter-spacing: -.045em;
}
h1 {
  max-width: 900px;
  margin-bottom: 0;
  font-size: clamp(3.4rem, 8vw, 7.8rem);
  line-height: .92;
}
.page-hero h1 { font-size: clamp(3.5rem, 7vw, 7rem); }
.lede {
  max-width: 620px;
  margin: 24px 0 0;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.5vw, 1.25rem);
}
.hero-index {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding-left: 24px;
  border-left: 1px solid var(--line);
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: .84rem;
}
.hero-index strong { color: var(--ink); font-size: 2.5rem; font-weight: 500; }

.home-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(66px, 7vw, 104px) 0 0;
  background:
    linear-gradient(90deg, transparent 49.9%, rgba(23,37,34,.08) 50%, transparent 50.1%),
    linear-gradient(0deg, transparent 49.9%, rgba(23,37,34,.045) 50%, transparent 50.1%);
  background-size: 100% 100%, 100% 180px;
}
.hero-blueprint {
  position: absolute;
  right: -1.5vw;
  top: 70px;
  color: rgba(23, 37, 34, .035);
  font-family: var(--sans);
  font-size: clamp(7rem, 17vw, 17rem);
  font-weight: 700;
  letter-spacing: -.08em;
  line-height: 1;
  pointer-events: none;
  white-space: nowrap;
}
.home-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, .96fr) minmax(420px, 1.04fr);
  gap: clamp(50px, 7vw, 96px);
  align-items: center;
}
.hero-copy { position: relative; z-index: 2; padding-bottom: 54px; }
.hero-kicker {
  margin: 0 0 2px;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .2em;
  text-transform: uppercase;
}
.home-title {
  font-size: clamp(4.4rem, 7.6vw, 7.6rem);
  line-height: .84;
  text-shadow: 0 8px 30px rgba(23,37,34,.06);
}
.home-title em { position: relative; color: var(--accent); font-weight: inherit; }
.home-title em::after {
  content: "";
  position: absolute;
  left: 3%;
  right: -4%;
  bottom: .02em;
  z-index: -1;
  height: .09em;
  background: rgba(197,83,45,.18);
}
.hero-role {
  margin: 34px 0 0;
  padding-left: 18px;
  border-left: 3px solid var(--accent);
  font-family: var(--sans);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .12em;
  line-height: 1.7;
  text-transform: uppercase;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 34px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border: 1px solid var(--ink);
  text-decoration: none;
  font-family: var(--sans);
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  transition: .25s ease;
}
.button::after { content: "↗"; margin-left: 16px; font-size: 1rem; }
.button:hover { color: var(--white); background: var(--ink); }
.button-accent { border-color: var(--accent); color: var(--white); background: var(--accent); }
.button-accent:hover { background: var(--accent-dark); }
.hero-visual {
  position: relative;
  min-height: 610px;
  display: flex;
  align-items: flex-start;
  justify-content: flex-end;
}
.portrait-frame {
  position: relative;
  width: min(100%, 500px);
  margin-left: auto;
  padding: 18px 18px 0 0;
}
.portrait-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 9% 9%;
  border: 2px solid var(--accent);
}
.portrait-frame img {
  position: relative;
  width: 100%;
  aspect-ratio: 4/4.65;
  border: 1px solid rgba(23, 37, 34, .3);
  object-fit: cover;
  object-position: 58% center;
  filter: saturate(.86) contrast(1.04);
  box-shadow: var(--shadow);
}
.portrait-caption {
  position: relative;
  display: flex;
  justify-content: space-between;
  padding-top: 13px;
  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.credential-card {
  position: absolute;
  left: -24px;
  bottom: 52px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 15px;
  min-width: 230px;
  padding: 18px 20px;
  color: var(--white);
  background: var(--ink);
  box-shadow: 12px 12px 0 var(--accent);
  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .08em;
  line-height: 1.45;
  text-transform: uppercase;
}
.credential-number {
  padding-right: 15px;
  border-right: 1px solid rgba(255,255,255,.25);
  font-family: var(--serif);
  font-size: 2.25rem;
  line-height: 1;
}
.hero-proof {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: .8fr 1.25fr 1.2fr 1.35fr;
  margin-top: 26px;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(255,253,248,.42);
}
.hero-proof > * {
  min-width: 0;
  padding: 21px 22px;
  border-right: 1px solid var(--line);
}
.hero-proof > *:last-child { border-right: 0; }
.hero-proof a { text-decoration: none; }
.hero-proof span,
.hero-proof strong { display: block; }
.hero-proof span {
  margin-bottom: 5px;
  color: var(--accent-dark);
  font-family: var(--sans);
  font-size: .62rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}
.hero-proof strong {
  overflow-wrap: anywhere;
  font-family: var(--sans);
  font-size: .75rem;
  font-weight: 600;
}
.hero-proof a:hover strong { color: var(--accent-dark); }

.section { padding: clamp(76px, 9vw, 130px) 0; }
.section-alt { background: var(--ink); color: var(--white); }
.section-heading {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 40px;
  align-items: start;
  margin-bottom: 54px;
}
.section-heading h2 {
  max-width: 750px;
  margin: 0;
  font-size: clamp(2.4rem, 5vw, 5rem);
  line-height: 1;
}
.section-heading p { max-width: 600px; color: var(--ink-soft); }
.section-alt .section-heading p { color: #bdc7c3; }
.section-alt .eyebrow { color: #e78b67; }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(40px, 8vw, 110px);
}
.about-copy { font-size: 1.08rem; }
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}
.stat { padding: 28px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.stat strong { display: block; font-family: var(--serif); font-size: 2.8rem; line-height: 1; }
.stat span { color: var(--ink-soft); font-family: var(--sans); font-size: .69rem; letter-spacing: .08em; text-transform: uppercase; }

.feature-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.feature-card { min-height: 280px; padding: 34px; background: var(--paper); }
.section-alt .feature-card { background: var(--ink); }
.feature-card .number { color: var(--accent); font-family: var(--sans); font-size: .7rem; letter-spacing: .12em; }
.feature-card h3 { margin: 70px 0 15px; font-family: var(--serif); font-size: 1.8rem; line-height: 1.15; }
.feature-card p { color: var(--ink-soft); font-size: .91rem; }
.section-alt .feature-card p { color: #bdc7c3; }
.text-link { color: var(--accent-dark); font-family: var(--sans); font-size: .74rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.section-alt .text-link { color: #e78b67; }

.content-grid { display: grid; grid-template-columns: minmax(0, .62fr) minmax(0, 1.38fr); gap: 70px; }
.side-note { position: sticky; top: 120px; align-self: start; }
.side-note h2 { font-size: clamp(2rem, 4vw, 4rem); line-height: 1; }
.side-note p { color: var(--ink-soft); }
.stack { display: grid; gap: 18px; }
.paper-card {
  padding: clamp(24px, 4vw, 42px);
  border: 1px solid var(--line);
  background: rgba(255,253,248,.5);
}
.paper-card h2, .paper-card h3 { margin-bottom: 12px; }
.paper-card h3 { font-family: var(--serif); font-size: 1.55rem; line-height: 1.25; }
.paper-card p:last-child, .paper-card ul:last-child { margin-bottom: 0; }
.meta {
  color: var(--accent-dark);
  font-family: var(--sans);
  font-size: .69rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.tag-list { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.tag-list li { padding: 7px 11px; border: 1px solid var(--line); font-family: var(--sans); font-size: .7rem; font-weight: 600; letter-spacing: .05em; }
.clean-list { margin: 0; padding: 0; list-style: none; }
.clean-list li { padding: 14px 0; border-bottom: 1px solid var(--line); }
.clean-list li::before { content: "—"; margin-right: 12px; color: var(--accent); }

.publication { display: grid; grid-template-columns: 70px 1fr auto; gap: 24px; padding: 28px 0; border-top: 1px solid var(--line); }
.publication:last-child { border-bottom: 1px solid var(--line); }
.publication-year { color: var(--accent-dark); font-family: var(--sans); font-size: .75rem; font-weight: 700; }
.publication h3 { margin-bottom: 8px; font-family: var(--serif); font-size: 1.35rem; line-height: 1.3; }
.publication p { margin: 0; color: var(--ink-soft); font-size: .85rem; }
.publication a { align-self: center; color: var(--accent-dark); font-family: var(--sans); font-size: .7rem; font-weight: 700; text-transform: uppercase; }

.project-section { padding: 70px 0; border-bottom: 1px solid var(--line); }
.project-intro { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin-bottom: 36px; }
.project-intro h2 { margin: 0; font-size: clamp(2.2rem, 4vw, 4.5rem); line-height: 1; }
.project-intro p { color: var(--ink-soft); }
.image-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.image-grid img, .gallery-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--paper-deep);
  cursor: zoom-in;
  transition: filter .25s ease, transform .25s ease;
}
.image-grid img { aspect-ratio: 4/3; }
.image-grid img:hover, .gallery-grid img:hover { filter: saturate(1.08); transform: translateY(-3px); }

.gallery-grid { columns: 4 240px; column-gap: 12px; }
.gallery-grid figure { break-inside: avoid; margin: 0 0 12px; overflow: hidden; }
.gallery-grid img { height: auto; min-height: 180px; }

.course-lab-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.course-lab-card {
  display: flex;
  min-height: 430px;
  flex-direction: column;
  padding: clamp(26px, 4vw, 42px);
  border: 1px solid var(--line);
  background: rgba(255,253,248,.58);
}
.course-lab-meta {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  color: var(--accent-dark);
  font-family: var(--sans);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.course-lab-body { margin: auto 0; padding: 42px 0 32px; }
.course-lab-type {
  margin-bottom: 10px;
  color: var(--ink-soft);
  font-family: var(--sans);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.course-lab-card h3 { margin-bottom: 16px; font-family: var(--serif); font-size: clamp(1.8rem, 3vw, 2.7rem); line-height: 1.05; }
.course-lab-card p { color: var(--ink-soft); }
.course-lab-topics { display: flex; flex-wrap: wrap; gap: 8px; margin: 0 0 24px; padding: 0; list-style: none; }
.course-lab-topics li { padding: 7px 10px; border: 1px solid var(--line); font-family: var(--sans); font-size: .67rem; font-weight: 600; letter-spacing: .05em; text-transform: uppercase; }
.course-lab-card .button { align-self: flex-start; }
.course-lab-placeholder { border-style: dashed; background: transparent; }
.course-lab-status { color: var(--ink-soft); font-family: var(--sans); font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }

.resource-group { border-top: 1px solid var(--line); }
.resource-group details { border-bottom: 1px solid var(--line); }
.resource-group summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 0;
  cursor: pointer;
  font-family: var(--serif);
  font-size: 1.5rem;
}
.resource-group summary::after { content: "+"; color: var(--accent); font-family: var(--sans); }
.resource-group details[open] summary::after { content: "−"; }
.resource-group ul { margin: 0 0 22px; padding-left: 22px; }
.pdf-viewer { width: 100%; height: 640px; margin-top: 24px; border: 1px solid var(--line); background: var(--white); }
.podcast-list { display: grid; gap: 12px; }
.podcast {
  display: grid;
  grid-template-columns: 58px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 24px;
  border: 1px solid var(--line);
}
.podcast-number { font-family: var(--serif); font-size: 2rem; color: var(--accent); }
.podcast h3 { margin: 0 0 4px; font-family: var(--serif); font-size: 1.2rem; }
.podcast p { margin: 0; color: var(--ink-soft); font-size: .8rem; }
audio { max-width: 290px; }

.certificate-columns { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.certificate-card { padding: 30px; border: 1px solid var(--line); background: rgba(255,253,248,.5); }
.certificate-card h2 { font-size: 1.8rem; line-height: 1.12; }
.certificate-card li { font-size: .84rem; }

.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 70px; }
.contact-list { padding: 0; margin: 0; list-style: none; border-top: 1px solid var(--line); }
.contact-list li { display: grid; grid-template-columns: 120px 1fr; gap: 20px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.contact-list span { color: var(--ink-soft); font-family: var(--sans); font-size: .68rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.contact-list a { overflow-wrap: anywhere; text-decoration-color: var(--accent); text-underline-offset: 4px; }

.site-footer { padding: 58px 0 28px; color: var(--white); background: var(--ink); }
.footer-grid { display: grid; grid-template-columns: 1.2fr .8fr; gap: 50px; padding-bottom: 50px; }
.footer-title { max-width: 700px; font-family: var(--serif); font-size: clamp(2.3rem, 5vw, 5rem); line-height: .98; }
.footer-links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; align-content: end; }
.footer-links a { color: #bdc7c3; text-decoration: none; font-family: var(--sans); font-size: .75rem; letter-spacing: .07em; text-transform: uppercase; }
.footer-links a:hover { color: #fff; }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.18); color: #93a19c; font-family: var(--sans); font-size: .67rem; letter-spacing: .08em; text-transform: uppercase; }
.visit-counter { display: inline-flex; align-items: center; gap: 9px; }
.visit-counter a { display: inline-flex; align-items: center; min-height: 20px; }
.visit-counter img { display: block; width: auto; max-height: 24px; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: grid;
  place-items: center;
  padding: 30px;
  border: 0;
  background: rgba(10, 18, 16, .94);
}
.lightbox[hidden] { display: none; }
.lightbox img { max-width: min(1100px, 90vw); max-height: 86vh; object-fit: contain; }
.lightbox button { position: absolute; top: 20px; right: 24px; border: 0; color: white; background: transparent; font-size: 2rem; cursor: pointer; }

[data-reveal] { opacity: 0; transform: translateY(20px); transition: opacity .65s ease, transform .65s ease; }
[data-reveal].is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
  [data-reveal] { opacity: 1; transform: none; }
}
@media (max-width: 980px) {
  .menu-toggle { display: block; }
  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 80px;
    display: none;
    flex-direction: column;
    align-items: flex-start;
    padding: 26px max(24px, calc((100vw - var(--container))/2));
    border-bottom: 1px solid var(--line);
    background: var(--paper);
  }
  .site-nav.is-open { display: flex; }
  .home-grid, .page-hero-grid, .content-grid, .contact-grid { grid-template-columns: 1fr; }
  .hero-copy { padding-bottom: 0; }
  .hero-visual { min-height: 0; justify-content: flex-start; }
  .portrait-frame { width: min(100%, 600px); margin: 0; }
  .credential-card { left: auto; right: 0; bottom: 44px; }
  .hero-proof { grid-template-columns: repeat(2, 1fr); }
  .hero-proof > *:nth-child(2) { border-right: 0; }
  .hero-proof > *:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .hero-index { min-height: auto; padding: 20px 0 0; border: 0; border-top: 1px solid var(--line); }
  .section-heading { grid-template-columns: 1fr; gap: 16px; }
  .feature-grid, .certificate-columns, .course-lab-grid { grid-template-columns: 1fr 1fr; }
  .image-grid { grid-template-columns: repeat(3, 1fr); }
  .side-note { position: static; }
}
@media (max-width: 680px) {
  :root { --container: min(calc(100vw - 28px), 1180px); }
  .nav-shell { min-height: 70px; }
  .site-nav { top: 70px; }
  .brand small { display: none; }
  h1, .page-hero h1 { font-size: clamp(3rem, 16vw, 5.5rem); }
  .home-title { font-size: clamp(4rem, 20vw, 6rem); }
  .page-hero, .home-hero { padding-top: 62px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .button { width: 100%; }
  .lede { overflow-wrap: anywhere; }
  .portrait-frame { width: 100%; }
  .hero-visual { padding-bottom: 86px; }
  .credential-card { left: 8px; right: auto; bottom: 32px; min-width: 210px; }
  .hero-proof { grid-template-columns: 1fr; margin-top: 0; }
  .hero-proof > * { border-right: 0; border-bottom: 1px solid var(--line); }
  .hero-proof > *:last-child { border-bottom: 0; }
  .about-grid, .feature-grid, .certificate-columns, .course-lab-grid, .project-intro, .footer-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: 1fr 1fr; }
  .image-grid { grid-template-columns: repeat(2, 1fr); }
  .publication { grid-template-columns: 50px 1fr; }
  .publication a { grid-column: 2; }
  .podcast { grid-template-columns: 40px 1fr; }
  .podcast audio { grid-column: 1 / -1; width: 100%; max-width: none; }
  .footer-links { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .visit-counter { order: 3; }
  .contact-list li { grid-template-columns: 1fr; gap: 4px; }
}