:root {
  --bg: #f7f3ee;
  --surface: #ffffff;
  --text-main: #1b1a17;
  --text-soft: #5c5a54;
  --accent: #111111;
  --line: #d9d4cd;
  --radius: 6px;
  --radius-sm: 4px;
  --font-body: "Space Grotesk", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-display: "IBM Plex Mono", "Space Grotesk", monospace;
}

* {
  box-sizing: border-box;
}

body.blog {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text-main);
  font-family: var(--font-body);
  position: relative;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 2.5rem;
}

.blog-topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding: 0.9rem 1.2rem;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
}

.back-btn {
  color: var(--text-main);
  text-decoration: none;
  font-weight: 600;
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  background: var(--surface);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.brand-dot {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  background: var(--accent);
}

.ghost-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.ghost-btn.visible {
  opacity: 1;
  transform: translateY(0);
}

.visit-count {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  font-family: var(--font-display);
}

.audio-btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 0.3rem 0.6rem;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-family: var(--font-display);
  cursor: pointer;
}

.audio-btn.active {
  background: var(--text-main);
  color: var(--surface);
}

@media (max-width: 640px) {
  .blog-topbar {
    flex-wrap: wrap;
    justify-content: flex-start;
    row-gap: 0.5rem;
    padding: 0.8rem 1rem;
  }

  .brand {
    flex: 1 1 100%;
  }

  .back-btn,
  .audio-btn,
  .ghost-btn {
    font-size: 0.65rem;
    padding: 0.25rem 0.5rem;
  }

  .visit-count {
    font-size: 0.6rem;
  }
}

.hero {
  padding: 1.6rem 1.2rem 1rem;
  position: relative;
  z-index: 1;
}

.hero-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem 1.3rem;
}

.eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-size: 0.65rem;
  color: var(--text-soft);
  margin: 0 0 0.6rem;
  font-family: var(--font-display);
}

.hero h1 {
  font-family: var(--font-body);
  font-size: 1.7rem;
  margin: 0 0 0.6rem;
}

.hero-text {
  margin: 0 0 0.8rem;
  color: var(--text-soft);
  line-height: 1.5;
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  padding: 0.2rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line);
  color: var(--accent);
  font-size: 0.72rem;
  text-transform: lowercase;
  background: transparent;
}

.feed {
  display: grid;
  gap: 1.2rem;
  padding: 0.5rem 1.2rem 2rem;
  position: relative;
  z-index: 1;
}

.post-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.2rem 1.1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  position: relative;
  overflow: hidden;
}

.post-card.pinned {
  border-color: var(--accent);
}

.post-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-soft);
  font-family: var(--font-display);
}

.post-tag {
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
}

.post-title {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.25rem;
}

.post-body {
  margin: 0;
  color: var(--text-soft);
  line-height: 1.55;
  white-space: pre-wrap;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card.expanded .post-body {
  -webkit-line-clamp: unset;
  overflow: visible;
}

.read-more {
  align-self: flex-start;
  border: none;
  background: transparent;
  color: var(--text-main);
  font-weight: 600;
  padding: 0;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.7rem;
}

.signature-area {
  margin-top: 0.4rem;
  padding-top: 0.8rem;
  border-top: 1px dashed var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.signature-meta {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-soft);
  font-family: var(--font-display);
}

.stamp-btn {
  position: relative;
  border: 2px solid var(--text-main);
  background: var(--surface);
  color: var(--text-main);
  padding: 0.35rem 0.9rem;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.75rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: transform 0.12s ease, background 0.2s ease;
}

.stamp-btn:hover {
  background: #f0ece6;
}

.stamp-btn.stamping {
  animation: stampPress 0.45s ease forwards;
}

.stamp-btn.signed {
  cursor: default;
  background: var(--text-main);
  color: var(--surface);
}

.stamp-mark {
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.2em;
}

@keyframes stampPress {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(2px) scale(0.96); }
  100% { transform: translateY(0) scale(1); }
}

.footer-note {
  text-align: center;
  color: var(--text-soft);
  font-size: 0.85rem;
  padding: 0 1.2rem 2.5rem;
  position: relative;
  z-index: 1;
  font-family: var(--font-display);
}

@media (min-width: 720px) {
  .feed {
    max-width: 720px;
    margin: 0 auto;
  }

  .hero {
    max-width: 760px;
    margin: 0 auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0s !important;
    scroll-behavior: auto !important;
  }
}