:root {
  --bg: #f5f3ec;
  --bg-soft: #efe9dc;
  --surface: #fffdf7;
  --text: #1f1f1f;
  --muted: #625f59;
  --accent: #2f5d50;
  --accent-2: #c85d2e;
  --line: #d4cbb8;
  --shadow: 0 18px 36px rgba(20, 18, 15, 0.12);
  --radius: 16px;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  padding: 0;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: "Avenir Next", "Gill Sans", "Trebuchet MS", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at 90% 0%, #e8dcbf 0, transparent 35%),
    radial-gradient(circle at 10% 20%, #e1efe7 0, transparent 30%),
    var(--bg);
  line-height: 1.6;
}

main {
  flex: 1;
}

h1,
h2,
h3,
.brand {
  font-family: "Palatino Linotype", "Book Antiqua", Palatino, serif;
  letter-spacing: 0.02em;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(1120px, 92vw);
  margin: 0 auto;
}

.nav-shell {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 253, 247, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 74px;
}

.brand {
  font-size: 1.25rem;
  font-weight: 700;
}

.nav-toggle {
  display: none;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--text);
  font-size: 1rem;
  padding: 0.45rem 0.75rem;
}

.nav-links {
  display: flex;
  gap: 1.2rem;
  align-items: center;
}

.nav-links > a,
.nav-item > a {
  font-size: 0.96rem;
  padding: 0.45rem 0.72rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: 0.2s ease;
  display: inline-block;
}

.nav-links > a:hover,
.nav-item > a:hover {
  border-color: var(--line);
  background: var(--surface);
}

.nav-links a.active,
.nav-item > a.active {
  color: var(--surface);
  background: var(--accent);
}

.nav-item {
  position: relative;
}

.dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 230px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: var(--shadow);
  padding: 0.5rem;
  opacity: 0;
  transform: translateY(6px);
  pointer-events: none;
  transition: opacity 0.14s ease, transform 0.14s ease;
}

.dropdown a {
  display: block;
  padding: 0.45rem 0.7rem;
  border-radius: 8px;
  font-size: 0.92rem;
}

.dropdown a:hover,
.dropdown a.active {
color: var(--muted);
  background: var(--bg-soft);
}

.has-dropdown::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  height: 12px;
}

.has-dropdown:hover .dropdown,
.has-dropdown:focus-within .dropdown,
.has-dropdown.is-open .dropdown,
.has-dropdown.mobile-open .dropdown {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.hero {
  padding: 4.5rem 0 3rem;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.kicker {
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2rem, 4.6vw, 3.75rem);
  line-height: 1.1;
  margin: 0.5rem 0 1rem;
}

.hero p {
  max-width: 54ch;
  color: var(--muted);
  font-size: 1.05rem;
}

.button-row {
  margin-top: 1.4rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.button {
  border-radius: 999px;
  border: 1px solid var(--line);
  padding: 0.72rem 1.15rem;
  font-weight: 700;
  font-size: 0.94rem;
  transition: 0.2s ease;
}

.button.primary {
  background: var(--accent);
  color: var(--surface);
  border-color: var(--accent);
}

.button.primary:hover {
  background: #264e42;
}

.button.secondary {
  background: var(--surface);
}

.button.secondary:hover {
  border-color: var(--accent);
}

.profile-card {
  background: linear-gradient(140deg, #fff 0%, #f4efe3 100%);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 1.2rem;
  box-shadow: var(--shadow);
}

.profile-card img {
  width: 100%;
  height: auto;
  border-radius: 16px;
  display: block;
}

.profile-card h3 {
  margin: 0.8rem 0 0.2rem;
}

.profile-card p {
  margin: 0;
  color: var(--muted);
}

.section {
  padding: 2rem 0 4rem;
}

.section h2 {
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  margin-bottom: 1rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem;
}

.card h3 {
  margin-top: 0.3rem;
  margin-bottom: 0.4rem;
}

.card p {
  color: var(--muted);
  margin: 0;
}

.page-header {
  padding: 4rem 0 1.2rem;
}

.page-header p {
  color: var(--muted);
  max-width: 62ch;
}

.content-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem;
  margin-bottom: 2rem;
}

.sample-card h2 {
  margin-top: 0;
}

.sample-card p {
  color: var(--muted);
}

.sample-card::after {
  content: "";
  display: table;
  clear: both;
}


.article-banner {

  margin: 0 0 1.2rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: #fff;
}

.article-banner img {
  width: 100%;
  height: auto;
  display: block;
}

.article-banner figcaption {
  margin: 0;
  padding: 0.55rem 0.85rem;
  font-size: 0.88rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.image-aside {
  float: right;
  width: min(50%, 360px);
  margin: 0.35rem 0 0.95rem 1.15rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
  background: #fff;
}

.image-aside.left {
  float: left;
  margin: 0.35rem 1.15rem 0.95rem 0;
}

.image-aside img {
  width: 100%;
  height: auto;
  display: block;
}

.image-aside figcaption {
  margin: 0;
  padding: 0.5rem 0.7rem;
  font-size: 0.84rem;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.sample-card p + p {
  margin-top: 1rem;
}

.sample-card sup {
  line-height: 0;
}

.sample-card sup a {
  color: var(--accent);
  font-weight: 700;
}

.references {
  margin-top: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.references summary {
  cursor: pointer;
  padding: 0.7rem 0.9rem;
  font-weight: 700;
}

.references ol {
  margin: 0;
  padding: 0 1.8rem 1rem;
}

.references li {
  margin-top: 0.45rem;
}

.references li:target {
  background: #fff3dd;
  border-radius: 6px;
}

footer {
  border-top: 1px solid var(--line);
  padding: 1.4rem 0 2rem;
  color: var(--muted);
  font-size: 0.92rem;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-links {
    position: absolute;
    right: 4vw;
    top: 68px;
    flex-direction: column;
    align-items: stretch;
    min-width: 220px;
    padding: 0.7rem;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    box-shadow: var(--shadow);
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links > a,
  .nav-item > a {
    width: 100%;
  }

  .nav-item.has-dropdown {
    display: grid;
    gap: 0.2rem;
  }

  .dropdown {
    position: static;
    min-width: unset;
    border: 1px solid var(--line);
    box-shadow: none;
    border-radius: 10px;
    margin-top: 0.1rem;
    padding: 0.35rem;
    background: #fff;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transform: none;
    transition: max-height 0.2s ease, opacity 0.2s ease;
  }

  .dropdown a {
    padding: 0.4rem 0.6rem;
  }

  .has-dropdown::after {
    content: none;
  }

  .has-dropdown.mobile-open .dropdown {
    max-height: 240px;
    opacity: 1;
    pointer-events: auto;
  }

  .image-aside,
  .image-aside.left {
    float: none;
    width: 100%;
    margin: 0.8rem 0;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }
}