:root {
  --paper: #f3efe6;
  --ink: #1c1914;
  --muted: #5e584e;
  --line: #ddd4c4;
  --card: #fffdf8;
  --teal: #0d5c56;
  --teal-dark: #083f3b;
  --header: rgba(243, 239, 230, 0.94);
  --shadow: 0 10px 30px rgba(40, 32, 18, 0.08);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Helvetica, Arial, sans-serif;
  font-size: 1.05rem;
  line-height: 1.65;
}

img { max-width: 100%; height: auto; }

a { color: var(--teal); }

a:hover { color: var(--teal-dark); }

h1, h2, h3 {
  font-family: ui-serif, Georgia, "Iowan Old Style", Palatino, "Palatino Linotype", serif;
  font-weight: 560;
  line-height: 1.2;
  letter-spacing: -0.015em;
}

h1 { font-size: clamp(2rem, 4vw, 3.15rem); margin: 0 0 0.8rem; }

h2 { font-size: clamp(1.45rem, 2.4vw, 2rem); margin: 0 0 0.7rem; }

h3 { font-size: 1.28rem; margin: 0 0 0.45rem; }

p { margin: 0 0 0.9rem; }

.skip {
  position: absolute;
  left: 0.75rem;
  top: -3rem;
  background: var(--ink);
  color: white;
  padding: 0.4rem 0.7rem;
  z-index: 30;
}

.skip:focus { top: 0.75rem; }

.wrap {
  width: min(72rem, calc(100% - 2.4rem));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1.2rem;
  background: var(--header);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-family: ui-serif, Georgia, Palatino, serif;
  font-size: 1.35rem;
  letter-spacing: 0.01em;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 0.4rem 0.85rem;
  font: inherit;
  cursor: pointer;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.nav-links, .social {
  display: flex;
  align-items: center;
  gap: 0.15rem 0.95rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a, .folder summary {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a[aria-current="page"] {
  color: var(--teal);
  font-weight: 650;
}

.social {
  padding-left: 0.95rem;
  border-left: 1px solid var(--line);
}

.social a { color: var(--muted); }

.folder { position: relative; }

.folder > a::after { content: " ▾"; font-size: 0.75em; }

.folder ul {
  display: none;
  list-style: none;
  position: absolute;
  top: calc(100% + 0.45rem);
  left: 0;
  min-width: 10.5rem;
  flex-direction: column;
  align-items: stretch;
  gap: 0.15rem;
  padding: 0.45rem;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 0.7rem;
  box-shadow: var(--shadow);
}

.folder ul a { display: block; padding: 0.35rem 0.5rem; border-radius: 0.4rem; }

.folder ul a:hover { background: var(--paper); }

.folder:hover ul,
.folder:focus-within ul,
.folder[open] ul { display: flex; }

.hero {
  display: grid;
  grid-template-columns: minmax(16rem, 22rem) minmax(0, 1fr);
  gap: 2.5rem;
  align-items: center;
  padding: 3rem 0 3.4rem;
}

.portrait img {
  width: 100%;
  border-radius: 1.4rem;
  object-fit: cover;
  box-shadow: var(--shadow);
}

.belief {
  font-size: 1.12rem;
  color: var(--muted);
}

.principles-banner {
  min-height: 16rem;
  display: grid;
  place-items: center;
  text-align: center;
  color: white;
  background-color: #24312b;
  background-size: cover;
  background-position: center 42%;
  position: relative;
  padding: 3rem 1.2rem;
}

.principles-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(18, 28, 24, 0.48);
}

.principles-banner h2 {
  position: relative;
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.principles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  padding: 1.6rem 0 3.2rem;
}

.card, .stack-group, .project, .contact-list, form {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 1rem;
}

.card { padding: 1.2rem 1.3rem 0.4rem; }

.page-intro { padding: 2.6rem 0 0.4rem; }

.page-intro p {
  max-width: 42rem;
  color: var(--muted);
  font-size: 1.12rem;
}

.chapter, .role {
  padding: 1.8rem 0;
  border-top: 1px solid var(--line);
}

.when, .company { color: var(--muted); margin-bottom: 0.35rem; }

.company { font-weight: 650; color: var(--ink); }

.photos {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.8rem;
  margin-top: 0.4rem;
}

.photos img {
  width: min(100%, 28rem);
  height: auto;
  border-radius: 0.9rem;
}

.role {
  display: grid;
  grid-template-columns: 5.6rem minmax(0, 1fr);
  gap: 1.2rem;
}

.logo img {
  width: 5.6rem;
  height: 5.6rem;
  object-fit: contain;
  background: white;
  border: 1px solid var(--line);
  border-radius: 0.85rem;
}

.activities {
  margin: 0.2rem 0 0;
  padding: 0;
  list-style: none;
}

.activities li {
  padding: 0.75rem 0;
  border-top: 1px solid var(--line);
}

.activities p { margin: 0.25rem 0 0; }

.stack-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: 0.9rem;
  padding-bottom: 3rem;
}

.stack-group { padding: 1rem 1.1rem 1.1rem; }

.stack-group ul { margin: 0.35rem 0 0; padding-left: 1.15rem; }

.stack-group li { margin: 0.18rem 0; }

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  align-items: start;
  gap: 1.1rem;
  padding-bottom: 3rem;
}

.project { padding: 1.1rem 1.15rem 1.2rem; }

.project img {
  width: min(100%, 16rem);
  margin: 0 auto 0.9rem;
  border-radius: 1.1rem;
  background: white;
}

.button, button {
  display: inline-block;
  background: var(--teal);
  color: white;
  text-decoration: none;
  border: 0;
  border-radius: 999px;
  padding: 0.55rem 1rem;
  font: inherit;
  cursor: pointer;
}

.button:hover, button:hover { background: var(--teal-dark); color: white; }

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(16rem, 0.85fr);
  gap: 1.5rem;
  align-items: start;
  padding-bottom: 3rem;
}

.contact-list {
  margin: 0 0 1.1rem;
  padding: 0.4rem 1.1rem;
}

.contact-list div {
  padding: 0.75rem 0;
  border-top: 1px solid var(--line);
}

.contact-list div:first-child { border-top: 0; }

.contact-list dt { font-weight: 700; }

.contact-list dd { margin: 0.15rem 0 0; overflow-wrap: anywhere; }

.contact-photo { margin: 0; }

.contact-photo img { width: 100%; border-radius: 1rem; }

form {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.2rem;
  padding: 1rem 1.1rem 1.15rem;
}

label { display: grid; gap: 0.3rem; font-weight: 650; }

input, textarea {
  width: 100%;
  font: inherit;
  color: inherit;
  background: white;
  border: 1px solid var(--line);
  border-radius: 0.6rem;
  padding: 0.55rem 0.7rem;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-weight: 450;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.4rem 0 3rem;
  text-align: center;
}

.footer-inner h2 { margin-bottom: 0.8rem; }

:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }

  .site-header { align-items: center; }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0.8rem;
    padding: 0.8rem 1.2rem 1.1rem;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
  }

  .site-header.is-open .site-nav { display: flex; }

  .nav-links, .social {
    flex-direction: column;
    align-items: flex-start;
  }

  .social {
    border-left: 0;
    padding-left: 0;
    border-top: 1px solid var(--line);
    padding-top: 0.7rem;
  }

  .folder > a::after { content: none; }

  .site-nav .folder ul {
    position: static;
    display: flex;
    box-shadow: none;
    border: 0;
    background: transparent;
    padding: 0.25rem 0 0.2rem 0.8rem;
    min-width: 0;
  }
}

@media (max-width: 760px) {
  .hero, .principles, .role, .contact-layout { grid-template-columns: 1fr; }

  .hero { padding-top: 1.6rem; }

  .logo img { width: 4.5rem; height: 4.5rem; }
}