:root {
  --bg: #0b0c10;
  --panel: #111218;
  --panel-2: #0f1016;
  --text: #e4e7f0;
  --muted: #9aa1af;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #7ac7ff;
  --code: #0f1320;
  --content-width: 740px;
}

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Space Grotesk", "Inter", system-ui, -apple-system, sans-serif;
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: #c6dcff;
  text-decoration: none;
}

a:hover {
  color: #e6f0ff;
  text-decoration: underline;
}

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

.v-shell {
  width: min(1180px, 100% - 2rem);
  margin: 0 auto 4rem;
}

.v-header {
  width: min(1180px, 100% - 2rem);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 0;
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(11, 12, 16, 0.72);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.v-brand {
  display: flex;
  gap: 0.75rem;
  align-items: baseline;
}

.v-logo {
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--text);
  font-size: 1rem;
}

.v-sub {
  color: var(--muted);
  font-size: 0.9rem;
}

.v-nav {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.v-link {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
}

.v-link:hover {
  color: var(--text);
  text-decoration: underline;
}

.v-footer {
  width: min(1180px, 100% - 2rem);
  margin: 3rem auto 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  display: flex;
  gap: 1rem;
  font-size: 0.95rem;
}

.v-footer-muted {
  color: #6f7684;
}

/* Hero */
.hero {
  position: relative;
  margin-top: 1rem;
  border-radius: 18px;
  overflow: hidden;
  min-height: 68vh;
  display: grid;
  align-items: end;
  background: radial-gradient(
      ellipse at center,
      rgba(0, 0, 0, 0.6) 100%,
      rgba(0, 0, 0, 0.1) 100%
    ),
    var(--hero-image);
  background-size: cover;
  background-position: center;
  border: 0px solid var(--line);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(11, 12, 16, 0.1), #0b0c10 70%);
}

.hero__inner {
  position: relative;
  padding: 4.5rem 3rem 4rem;
  max-width: 800px;
  z-index: 1;
}

.hero__eyebrow {
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
  margin: 0 0 0.8rem;
  font-size: 0.9rem;
}

.hero__title {
  margin: 0 0 1rem;
  font-size: clamp(2.8rem, 6vw, 3.8rem);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.hero__subtitle {
  margin: 0;
  color: #c4c8d5;
  font-size: 1.1rem;
  max-width: 540px;
}

/* Sections */
.section {
  margin-top: 3.5rem;
}

.section__head {
  margin-bottom: 1.2rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
}

.section__title {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

/* Post grid + cards */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.4rem;
}

.post-card {
  display: grid;
  grid-template-rows: auto 1fr;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  color: var(--text);
  transition: border-color 160ms ease, transform 160ms ease;
  text-decoration: none;
}

.post-card:hover {
  border-color: rgba(255, 255, 255, 0.14);
  transform: translateY(-4px);
  text-decoration: none;
}

.post-card__cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: var(--panel-2);
  overflow: hidden;
}

.post-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.92);
  transition: transform 180ms ease, filter 180ms ease;
}

.post-card:hover .post-card__cover img {
  transform: scale(1.01);
  filter: brightness(1);
}

.post-card__body {
  padding: 1.15rem 1.2rem 1.25rem;
  display: grid;
  gap: 0.45rem;
}

.post-card__title {
  margin: 0;
  font-size: 1.05rem;
  letter-spacing: 0.01em;
}

.post-card__desc {
  margin: 0;
  color: var(--muted);
  font-size: 0.98rem;
  line-height: 1.6;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.06);
  color: #d1d6e0;
  font-size: 0.8rem;
  letter-spacing: 0.01em;
  width: max-content;
}

.post-meta {
  display: flex;
  gap: 0.4rem;
  align-items: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.post-meta__tags {
  color: #c5cbda;
}

/* Post layout */
.post-layout {
  width: min(1180px, 100% - 2rem);
  margin: 0 auto 4rem;
}

.post-head {
  width: min(var(--content-width), 100%);
  margin: 3rem auto 1.5rem;
  display: grid;
  gap: 0.6rem;
}

.post-head__title {
  margin: 0;
  font-size: clamp(2.2rem, 4vw, 2.8rem);
  letter-spacing: 0.01em;
}

.post-head__desc {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

.post-hero {
  margin: 0 auto;
  width: 100%;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.post-hero img {
  width: 100%;
  display: block;
}

.post-layout__grid {
  display: grid;
  grid-template-columns: minmax(0, var(--content-width)) 320px;
  gap: 2rem;
  align-items: start;
  margin-top: 2rem;
}

.post-body {
  width: min(var(--content-width), 100%);
  margin: 0 auto;
  line-height: 1.82;
  color: #d9dde8;
  font-size: 1.05rem;
}

.post-body p {
  margin: 1.2rem 0;
}

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

.post-body h2,
.post-body h3 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.post-body h2 {
  font-size: 1.6rem;
}

.post-body h3 {
  font-size: 1.25rem;
}

.post-body ul,
.post-body ol {
  padding-left: 1.2rem;
  margin: 1.1rem 0;
  color: #cfd5e2;
}

.post-body blockquote {
  margin: 1.5rem 0;
  padding-left: 1rem;
  border-left: 2px solid var(--line);
  color: var(--muted);
}

.post-body code {
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.35rem;
  border-radius: 6px;
  font-size: 0.95em;
}

.post-body pre {
  background: var(--code);
  padding: 1.1rem 1.2rem;
  border-radius: 12px;
  overflow-x: auto;
  border: 1px solid var(--line);
}

.post-body pre code {
  background: none;
  padding: 0;
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.post-body th,
.post-body td {
  border: 1px solid var(--line);
  padding: 0.65rem 0.8rem;
}

.toc {
  position: sticky;
  top: 6.5rem;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 12px;
  padding: 1rem;
  max-height: calc(100vh - 9rem);
  overflow: auto;
}

.toc__title {
  margin: 0 0 0.6rem;
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: #d6dbe6;
}

.toc__list {
  display: grid;
  gap: 0.35rem;
}

.toc__link {
  color: var(--muted);
  font-size: 0.95rem;
  text-decoration: none;
  line-height: 1.5;
}

.toc__link:hover {
  color: var(--text);
  text-decoration: underline;
}

.toc__link.is-child {
  padding-left: 0.8rem;
}

@media (max-width: 1024px) {
  .v-header {
    position: static;
  }

  .hero {
    min-height: 56vh;
  }

  .post-layout__grid {
    grid-template-columns: 1fr;
  }

  .toc {
    display: none;
  }
}

@media (max-width: 640px) {
  .v-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }

  .v-shell,
  .v-header,
  .v-footer {
    width: min(100% - 1.5rem, 100%);
  }

  .hero__inner {
    padding: 3.5rem 1.5rem 2.5rem;
  }

  .post-card__body {
    padding: 1rem 1rem 1.1rem;
  }

  .post-head {
    margin-top: 2.2rem;
  }
}