/* Reset & base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #ffffff;
  --color-surface: #f9f9f7;
  --color-border: #e8e8e4;
  --color-text: #1a1a1a;
  --color-muted: #6b6b6b;
  --color-accent: #ff6719;
  --color-accent-hover: #e55a10;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 8px;
  --max-width: 680px;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Layout */
header {
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 1.5rem;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-name {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

main {
  flex: 1;
  padding: 3rem 1.5rem;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
}

footer {
  border-top: 1px solid var(--color-border);
  padding: 1.5rem;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.footer-inner a {
  color: var(--color-muted);
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* Hero */
.hero {
  margin-bottom: 3rem;
}

.hero-tag {
  display: inline-block;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--color-muted);
  padding: 0.25rem 0.75rem;
  margin-bottom: 1.25rem;
  letter-spacing: 0.01em;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.hero p {
  font-size: 1.125rem;
  color: var(--color-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* Subscribe form */
.subscribe-form {
  margin-top: 2rem;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.subscribe-form input[type="email"] {
  flex: 1;
  min-width: 220px;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.15s;
}

.subscribe-form input[type="email"]:focus {
  border-color: var(--color-accent);
}

.subscribe-form input[type="email"]::placeholder {
  color: #aaaaaa;
}

.btn-primary {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  background: var(--color-accent);
  color: #ffffff;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  white-space: nowrap;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
}

.btn-primary:active {
  transform: scale(0.98);
}

.form-note {
  margin-top: 0.625rem;
  font-size: 0.8125rem;
  color: var(--color-muted);
}

/* Posts list */
.section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  margin-bottom: 1.25rem;
}

.posts-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: opacity 0.15s;
}

.post-item:first-child {
  border-top: 1px solid var(--color-border);
}

.post-item:hover {
  opacity: 0.7;
}

.post-meta {
  font-size: 0.8125rem;
  color: var(--color-muted);
}

.post-title {
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.post-excerpt {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.5;
}