:root {
  --bg: #f5f7f8;
  --bg-elev: #ffffff;
  --ink: #152028;
  --muted: #5a6670;
  --line: #d8e0e6;
  --accent: #1a5f7a;
  --accent-deep: #0f3f52;
  --accent-soft: #e7f2f6;
  --max: 46rem;
  --pad: 1.15rem;
  --serif: "Source Serif 4", "Noto Serif", Georgia, serif;
  --sans: "Be Vietnam Pro", "Segoe UI", system-ui, sans-serif;
  --radius: 0.35rem;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 1.05rem;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--bg);
  background-image:
    linear-gradient(180deg, rgba(245, 247, 248, 0.92), rgba(245, 247, 248, 0.97)),
    url("/assets/img/lehuule-bg.jpg");
  background-size: auto, cover;
  background-attachment: fixed;
  min-height: 100dvh;
}

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

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent-deep);
}

.skip {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 0.5rem 0.75rem;
  z-index: 100;
}

.skip:focus {
  left: 0.5rem;
  top: 0.5rem;
}

.wrap {
  width: min(100% - 2 * var(--pad), var(--max));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: rgba(245, 247, 248, 0.9);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 0;
  min-height: 3.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 650;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.015em;
  line-height: 1.2;
}

.brand-mark {
  width: 40px;
  height: 40px;
  object-fit: contain;
  flex: none;
  border-radius: 6px;
}

.brand-text {
  display: block;
}

.brand-sub {
  display: block;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  margin-top: 0.12rem;
}

.nav {
  display: flex;
  gap: 0.95rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

.nav a {
  color: var(--ink);
  text-decoration: none;
}

.nav a[aria-current="page"],
.nav a:hover {
  color: var(--accent);
  text-decoration: underline;
}

main {
  padding: 1.75rem 0 3.25rem;
}

.intro {
  display: grid;
  gap: 1.15rem;
  padding-bottom: 1.75rem;
  border-bottom: 1px solid var(--line);
  margin-bottom: 1.75rem;
  animation: rise 0.55s ease both;
}

@media (min-width: 720px) {
  .intro {
    grid-template-columns: 8.5rem 1fr;
    align-items: start;
  }
}

.portrait {
  width: 8.5rem;
  height: 8.5rem;
  border-radius: 999px;
  object-fit: cover;
  border: 1px solid var(--line);
  background: var(--accent-soft);
}

.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--accent);
  font-size: 0.92rem;
  font-weight: 600;
}

h1,
h2,
h3 {
  font-family: var(--serif);
  font-weight: 650;
  letter-spacing: -0.02em;
  line-height: 1.22;
  color: var(--ink);
}

h1 {
  font-size: clamp(1.75rem, 4.2vw, 2.35rem);
  margin: 0 0 0.55rem;
}

.intro h1 {
  font-size: clamp(1.65rem, 3.8vw, 2.1rem);
}

h2 {
  font-size: 1.35rem;
  margin: 0;
}

.lead {
  font-size: 1.08rem;
  color: var(--muted);
  margin: 0;
  max-width: 36rem;
}

.meta-line {
  margin: 0.75rem 0 0;
  font-size: 0.98rem;
  color: var(--ink);
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.text-link {
  font-size: 0.95rem;
  white-space: nowrap;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post {
  border-bottom: 1px solid var(--line);
}

.post a {
  display: block;
  padding: 1.15rem 0;
  color: var(--ink);
  text-decoration: none;
  transition: transform 0.2s ease, color 0.2s ease;
}

.post a:hover {
  color: var(--accent-deep);
}

@media (prefers-reduced-motion: no-preference) {
  .post a:hover {
    transform: translateX(2px);
  }
}

.post h2,
.post h3 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.25rem, 2.8vw, 1.55rem);
}

.post.featured h2 {
  font-size: clamp(1.45rem, 3.4vw, 1.9rem);
}

.post.featured a {
  padding-top: 1.35rem;
  padding-bottom: 1.4rem;
}

.dek {
  margin: 0;
  color: var(--muted);
  font-size: 1rem;
  max-width: 40rem;
}

.post-meta {
  margin: 0.45rem 0 0;
  font-size: 0.84rem;
  color: var(--muted);
}

.howto-strip {
  margin-top: 2rem;
  padding: 1rem 1.1rem;
  background: var(--accent-soft);
  border-radius: var(--radius);
  border: 1px solid #cfe0e8;
}

.howto-strip p {
  margin: 0;
}

.page-head {
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-head h1 {
  margin-bottom: 0.5rem;
}

.prose {
  max-width: 40rem;
}

.prose p,
.prose ul,
.prose ol {
  margin: 0 0 1rem;
}

.prose ul,
.prose ol {
  padding-left: 1.25rem;
}

.prose h2 {
  font-size: 1.28rem;
  margin: 1.75rem 0 0.7rem;
}

.prose h3 {
  font-size: 1.08rem;
  font-family: var(--sans);
  margin: 1.35rem 0 0.5rem;
}

.article-figure {
  margin: 1.4rem 0 1.6rem;
}

.article-figure img {
  width: auto;
  max-width: 100%;
  max-height: 38rem;
  margin-inline: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: contain;
}

.article-figure figcaption {
  max-width: 36rem;
  margin: 0.55rem auto 0;
  color: var(--muted);
  font-size: 0.84rem;
  line-height: 1.5;
  text-align: center;
}

.note-soft {
  padding: 0.85rem 1rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.article-head {
  margin-bottom: 1.5rem;
  padding-bottom: 1.15rem;
  border-bottom: 1px solid var(--line);
}

.article-head h1 {
  margin: 0.35rem 0 0.65rem;
}

.byline {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-top: 1rem;
}

.byline img {
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 999px;
  object-fit: cover;
  border: 1px solid var(--line);
}

.byline strong {
  display: block;
  font-size: 0.95rem;
}

.byline span {
  display: block;
  font-size: 0.84rem;
  color: var(--muted);
}

.related {
  margin-top: 2.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.related h2 {
  font-size: 1.15rem;
  margin-bottom: 0.65rem;
}

.related ul {
  padding-left: 1.1rem;
  margin: 0;
}

.related li {
  margin: 0.35rem 0;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.5rem 0 2.5rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.site-footer p {
  margin: 0.35rem 0;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .intro {
    animation: none;
  }
  .post a:hover {
    transform: none;
  }
}

@media (max-width: 640px) {
  .nav {
    gap: 0.7rem;
    font-size: 0.9rem;
  }
  .brand {
    font-size: 0.95rem;
  }
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12181c;
    --bg-elev: #1a2228;
    --ink: #e8edf0;
    --muted: #a3b0b9;
    --line: #2c383f;
    --accent: #7fc4dd;
    --accent-deep: #a8dcef;
    --accent-soft: #1b2b33;
  }

  body {
    background-image:
      linear-gradient(180deg, rgba(18, 24, 28, 0.94), rgba(18, 24, 28, 0.97)),
      url("/assets/img/lehuule-bg.jpg");
  }

  .site-header {
    background: rgba(18, 24, 28, 0.9);
  }

  .howto-strip {
    border-color: #2f4550;
  }

  .portrait,
  .byline img {
    filter: brightness(0.94);
  }

  .skip {
    color: #12181c;
  }
}