:root {
  --bg: #f4efe6;
  --paper: #fffaf1;
  --ink: #14221f;
  --muted: #46615a;
  --accent: #0f7a66;
  --accent-soft: #d4f2ea;
  --line: #b9cdc6;
  --card-shadow: 0 12px 30px rgba(20, 34, 31, 0.08);
  --radius: 18px;
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: "Space Grotesk", sans-serif;
  background: radial-gradient(circle at 10% 10%, #fff8d9 0%, transparent 30%),
    radial-gradient(circle at 90% 15%, #dff7f1 0%, transparent 35%),
    linear-gradient(180deg, #f5f0e8 0%, #f3ede3 45%, #efe7db 100%);
  color: var(--ink);
  line-height: 1.6;
  min-height: 100vh;
}

.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  opacity: 0.12;
  background-image: radial-gradient(#000 0.5px, transparent 0.5px);
  background-size: 4px 4px;
  z-index: -1;
}

.container {
  width: min(92%, var(--max-width));
  margin: 0 auto;
}

header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
  background: rgba(255, 250, 241, 0.8);
  border-bottom: 1px solid rgba(20, 34, 31, 0.08);
}

.nav-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.9rem 0;
  gap: 1rem;
}

.brand {
  font-family: "Fraunces", serif;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--ink);
  text-decoration: none;
}

nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

nav a {
  text-decoration: none;
  color: var(--ink);
  font-size: 0.95rem;
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 0.45rem 0.85rem;
  transition: all 0.2s ease;
}

nav a:hover,
nav a:focus-visible,
nav a.active {
  border-color: var(--line);
  background: var(--accent-soft);
  outline: none;
}

main {
  padding: 4.5rem 0;
}

h1,
h2,
h3 {
  font-family: "Fraunces", serif;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.8rem);
  margin-bottom: 1rem;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  margin-bottom: 0.9rem;
}

.lead {
  max-width: 65ch;
  color: var(--muted);
  font-size: 1.08rem;
}

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

.hero-card {
  background: var(--paper);
  border: 1px solid rgba(20, 34, 31, 0.08);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 1.3rem;
}

.stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.chip {
  background: #e5f2ef;
  border: 1px solid #bbd7d0;
  color: #0e5547;
  border-radius: 999px;
  padding: 0.35rem 0.7rem;
  font-size: 0.84rem;
}

.cta-row {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn {
  border: none;
  border-radius: 999px;
  padding: 0.68rem 1.1rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 8px 20px rgba(15, 122, 102, 0.25);
}

.btn-secondary {
  background: transparent;
  border: 1px solid var(--line);
  color: var(--ink);
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
  margin-top: 1.3rem;
}

.card {
  background: var(--paper);
  border: 1px solid rgba(20, 34, 31, 0.1);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--card-shadow);
}

.card h3 {
  margin-bottom: 0.5rem;
  font-size: 1.18rem;
}

.card p {
  color: var(--muted);
  font-size: 0.95rem;
}

.blog-list {
  display: grid;
  gap: 1rem;
  margin-top: 1.2rem;
}

.content-layout {
  display: grid;
  grid-template-columns: minmax(220px, 280px) minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  margin-top: 1.1rem;
}

.sidebar {
  position: sticky;
  top: 84px;
  background: var(--paper);
  border: 1px solid rgba(20, 34, 31, 0.1);
  border-radius: var(--radius);
  box-shadow: var(--card-shadow);
  padding: 1rem;
}

.sidebar h2 {
  font-size: 1.2rem;
  margin-bottom: 0.7rem;
}

.sidebar-list {
  list-style: none;
  display: grid;
  gap: 0.45rem;
}

.sidebar-list a {
  display: block;
  text-decoration: none;
  color: var(--ink);
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 0.45rem 0.5rem;
}

.sidebar-list a:hover,
.sidebar-list a:focus-visible {
  border-color: var(--line);
  background: var(--accent-soft);
  outline: none;
}

.sidebar-list span {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
}

.sidebar-desc {
  display: block;
  color: #4a5f58;
  font-size: 0.8rem;
  line-height: 1.4;
  margin-top: 0.2rem;
}

.sidebar-list time {
  display: block;
  color: #4a5f58;
  font-size: 0.82rem;
}

.sidebar-groups {
  display: grid;
  gap: 0.9rem;
}

.sidebar-overview-scroll {
  max-height: min(68vh, 640px);
  overflow-y: auto;
  padding-right: 0.25rem;
}

.sidebar-group-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #39514a;
  border-bottom: 1px dashed var(--line);
  padding-bottom: 0.35rem;
  margin-bottom: 0.45rem;
}

.tag-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 1rem;
}

.tag-filter-label {
  font-size: 0.9rem;
  color: #39514a;
  font-weight: 600;
}

.tag-filter-loading {
  color: #4a5f58;
  font-size: 0.9rem;
}

.tag-filter-btn,
.item-tag {
  border: 1px solid #bbd7d0;
  background: #e5f2ef;
  color: #0e5547;
  border-radius: 999px;
  font-size: 0.8rem;
  padding: 0.25rem 0.65rem;
}

.tag-filter-btn {
  cursor: pointer;
}

.tag-filter-btn.active,
.tag-filter-btn:hover,
.tag-filter-btn:focus-visible {
  border-color: #0f7a66;
  background: #0f7a66;
  color: #fff;
  outline: none;
}

.item-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin: 0.45rem 0 0.65rem;
}

.blog-item {
  background: var(--paper);
  border: 1px solid rgba(20, 34, 31, 0.1);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--card-shadow);
}

.blog-item time {
  display: block;
  font-size: 0.86rem;
  color: #4a5f58;
  margin-bottom: 0.5rem;
}

.blog-content {
  color: #21332f;
}

.blog-content h1,
.blog-content h2,
.blog-content h3 {
  font-size: 1.15rem;
  margin: 0.6rem 0;
}

.blog-content p,
.blog-content ul {
  margin-bottom: 0.6rem;
}

.blog-content ol {
  margin: 0 0 0.6rem 1.2rem;
}

.blog-content ul {
  margin-left: 1.2rem;
}

.blog-content li {
  margin-bottom: 0.3rem;
}

.blog-content a {
  color: var(--accent);
  text-decoration: underline;
}

.blog-content pre {
  background: #ecf4f2;
  border: 1px solid #d3e6e2;
  border-radius: 8px;
  padding: 0.8rem;
  overflow-x: auto;
  margin-bottom: 0.8rem;
}

.blog-content blockquote {
  margin: 0 0 0.8rem;
  padding: 0.6rem 0.9rem;
  border-left: 4px solid #7ab5a9;
  background: #eef7f4;
  border-radius: 6px;
}

.blog-content blockquote p {
  margin-bottom: 0.35rem;
}

.blog-content blockquote p:last-child {
  margin-bottom: 0;
}

.blog-content img {
  max-width: 100%;
  height: auto;
  border-radius: 10px;
  display: block;
  margin: 0.6rem 0;
}

.blog-content code {
  background: #ecf4f2;
  border: 1px solid #d3e6e2;
  border-radius: 6px;
  padding: 0.1rem 0.35rem;
  font-family: Consolas, monospace;
}

.blog-content pre code {
  border: none;
  padding: 0;
  background: transparent;
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1rem;
  margin-top: 1.2rem;
}

.contact-grid a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

footer {
  border-top: 1px solid rgba(20, 34, 31, 0.12);
  padding: 1.3rem 0 2rem;
  color: #566862;
  font-size: 0.92rem;
}

@media (max-width: 780px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .content-layout {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
  }

  .sidebar-overview-scroll {
    max-height: none;
    overflow-y: visible;
  }

  .nav-wrap {
    flex-direction: column;
    align-items: flex-start;
  }

  nav ul {
    gap: 0.5rem;
  }
}