:root {
  --ink: #111111;
  --gray: #595959;
  --line: #d9d9d9;
  --bg: #ffffff;
  --max: 640px;
}

* { box-sizing: border-box; }

html { font-size: 17px; }

body {
  margin: 0;
  padding: 0 20px;
  font-family: Georgia, "Times New Roman", Times, serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
}

.wrap { max-width: var(--max); margin: 0 auto; }

a { color: var(--ink); text-decoration: underline; text-underline-offset: 2px; }
a:hover { color: var(--gray); }

/* Nav */
nav.main {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  flex-wrap: wrap;
  row-gap: 6px;
  padding: 40px 0 20px;
  font-family: Georgia, serif;
  font-size: 0.95rem;
}
nav.main .nav-pages,
nav.main .nav-top,
nav.main .nav-actions,
nav.main .nav-lang { display: flex; flex-wrap: wrap; align-items: center; }
nav.main a {
  margin-right: 18px;
  text-decoration: none;
  color: var(--gray);
}
nav.main .nav-actions a { text-decoration: underline; text-underline-offset: 2px; }
nav.main .nav-actions a:last-child { margin-right: 0; }
nav.main .nav-lang { margin-left: 18px; padding-left: 18px; border-left: 1px solid var(--line); }
nav.main .nav-lang a,
nav.main .nav-lang span { margin-right: 12px; line-height: 0; }
nav.main .nav-lang a:last-child,
nav.main .nav-lang span:last-child { margin-right: 0; }
nav.main .nav-lang img {
  display: block;
  width: 20px;
  height: 15px;
  border: 1px solid var(--line);
  border-radius: 2px;
}
nav.main .nav-lang a img { opacity: 0.5; transition: opacity 0.15s; }
nav.main .nav-lang a:hover img { opacity: 1; }
nav.main .nav-lang span.active {
  display: inline-block;
  padding-bottom: 4px;
  border-bottom: 2px solid var(--ink);
}
nav.main a:hover { color: var(--ink); text-decoration: underline; }
nav.main a.active { color: var(--ink); border-bottom: 1px solid var(--ink); }

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 26px;
  height: 22px;
  background: none;
  border: none;
  padding: 0;
  margin-right: 18px;
  cursor: pointer;
}
.hamburger span { display: block; height: 2px; background: var(--ink); }

@media (max-width: 640px) {
  nav.main { flex-direction: column; align-items: stretch; }
  nav.main .nav-top { order: 1; justify-content: space-between; }
  nav.main .nav-pages {
    order: 2;
    display: none;
    flex-direction: column;
    gap: 12px;
    margin-top: 16px;
  }
  nav.main .nav-pages.open { display: flex; }
  .hamburger { display: flex; }
  nav.main .nav-lang {
    width: 100%;
    margin: 10px 0 0;
    padding: 10px 0 0;
    border-left: none;
    border-top: 1px solid var(--line);
  }
}

hr {
  border: none;
  border-top: 1px solid var(--line);
  margin: 48px 0;
}

/* Header block */
img.portrait {
  display: block;
  width: 160px;
  height: 160px;
  object-fit: cover;
  flex-shrink: 0;
}
h1.name { font-size: 1.9rem; margin: 0 0 24px; font-weight: normal; }

.intro-row {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-bottom: 32px;
}
.intro-row p { margin: 0; }

@media (max-width: 560px) {
  .intro-row { flex-direction: column; align-items: flex-start; }
}

/* Buttons */
.button-cert-row { display: flex; align-items: flex-start; gap: 28px; flex-wrap: wrap; margin: 4px 0 32px; }
.button-cert-row .button-row { margin: 0; }
.cert-thumb { display: block; flex-shrink: 0; }
.cert-thumb img { display: block; width: 320px; height: auto; border: 1px solid var(--line); }

@media (max-width: 560px) {
  .cert-thumb img { width: 240px; }
}

.button-row { display: flex; flex-direction: column; align-items: flex-start; gap: 12px; margin: 4px 0 32px; }
.btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 260px;
  padding: 12px 20px;
  border: 1px solid var(--ink);
  text-decoration: none;
  font-size: 1rem;
  text-align: center;
}
.btn:hover { background: var(--ink); color: var(--bg); }

h1.page-title { font-size: 1.5rem; font-weight: normal; margin: 0 0 10px; }
p.page-lead { color: var(--gray); margin: 0 0 16px; }

h2.section-title {
  font-size: 1.05rem;
  font-weight: bold;
  margin: 0 0 20px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

section { margin-bottom: 48px; }

p { margin: 0 0 20px; }

.small { font-size: 0.9rem; color: var(--gray); }

/* Plain vertical lists (replaces inline middot-separated text) */
ul.plain-list, ul.link-list {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
}
ul.plain-list li, ul.link-list li {
  margin-bottom: 12px;
  padding-left: 16px;
  position: relative;
}
ul.plain-list li::before, ul.link-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--gray);
}

/* Job entries */
.job { margin-bottom: 40px; }
.job h3 { font-size: 1.05rem; margin: 0 0 3px; font-weight: bold; }
.job .org { font-style: italic; }
.job .meta { color: var(--gray); font-size: 0.9rem; margin: 3px 0 14px; }
.job .reference { color: var(--gray); font-size: 0.85rem; font-style: italic; margin: 0 0 14px; }
.job ul { margin: 14px 0 0; padding-left: 22px; }
.job li { margin-bottom: 12px; }

/* Case studies */
.case { margin-bottom: 56px; }
.case h3 { font-size: 1.2rem; margin: 0 0 4px; }
.case .org { color: var(--gray); font-size: 0.92rem; margin-bottom: 18px; }
.case h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--gray);
  margin: 28px 0 12px;
  font-weight: normal;
}
.case ul { margin: 0; padding-left: 22px; }
.case li { margin-bottom: 12px; }
.case ul.plain-list { padding-left: 16px; }

/* Case study list (blog-style index) */
.post-item { margin-bottom: 48px; }
.post-item h3 { font-size: 1.15rem; margin: 0 0 6px; }
.post-item h3 a { text-decoration: none; }
.post-item h3 a:hover { text-decoration: underline; }
.post-item .org { color: var(--gray); font-size: 0.9rem; margin-bottom: 14px; }
.post-item p { margin: 0 0 10px; }
.post-item .more { font-size: 0.92rem; margin-top: 14px; }
.post-item ul.plain-list { margin: 14px 0; }
.post-item ol.numbered-list { margin: 14px 0; padding-left: 22px; }
.post-item ol.numbered-list li { margin-bottom: 8px; }

/* Contact */
table.contact { border-collapse: collapse; margin-bottom: 8px; }
table.contact td { padding: 9px 0; vertical-align: top; }
table.contact td.label { color: var(--gray); padding-right: 18px; white-space: nowrap; }

@media (max-width: 480px) {
  table.contact, table.contact tbody, table.contact tr, table.contact td {
    display: block;
    width: auto;
  }
  table.contact tr { margin-bottom: 12px; }
  table.contact td.label { padding-right: 0; padding-bottom: 2px; white-space: normal; }
}

footer.site {
  margin-top: 56px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--gray);
  font-size: 0.88rem;
}
footer.site .wrap { display: flex; gap: 20px; flex-wrap: wrap; }