:root {
  --bg: #f5f2ee;
  --surface: #ffffff;
  --text: #161616;
  --muted: #6f6f6f;
  --line: #ddd6cf;
  --accent: #111111;
  --soft: #ebe5de;
  --max: 1180px;
  --reading: 760px;
  --radius: 24px;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.06);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.75;
}

/* Topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 242, 238, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.topbar-inner {
  width: min(92%, var(--max));
  margin: 0 auto;
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.logo {
  text-decoration: none;
  color: var(--text);
  font-size: 0.95rem;
  letter-spacing: 0.28em;
  font-weight: 700;
}

.nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.96rem;
  transition: color 0.25s ease;
}

.nav a:hover,
.nav a.active {
  color: var(--text);
}

/* Hero */
.article-page {
  padding-bottom: 90px;
}

.article-hero {
  padding: 72px 0 28px;
}

.article-hero-inner {
  width: min(92%, var(--reading));
  margin: 0 auto;
}

.article-category {
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  color: var(--muted);
  margin-bottom: 22px;
}

.article-hero h1 {
  font-size: clamp(2.2rem, 5vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  margin-bottom: 20px;
}

.article-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.45rem);
  color: var(--muted);
  max-width: 760px;
  margin-bottom: 24px;
  line-height: 1.55;
}

.article-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  color: var(--muted);
  font-size: 0.95rem;
}

.article-meta .dot {
  opacity: 0.6;
}

/* Cover */
.article-cover {
  padding: 8px 0 46px;
}

.article-cover-inner {
  width: min(92%, 1040px);
  margin: 0 auto;
}

.article-cover img {
  width: 100%;
  display: block;
  border-radius: 28px;
  object-fit: cover;
  max-height: 720px;
  box-shadow: var(--shadow);
}

/* Content */
.article-content {
  padding-top: 10px;
}

.article-content-inner {
  width: min(92%, var(--reading));
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid rgba(0, 0, 0, 0.04);
  border-radius: 28px;
  padding: 52px 50px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
}

.article-content p,
.article-content li {
  font-size: 1.08rem;
  color: #2a2a2a;
}

.article-content p {
  margin-bottom: 20px;
}

.article-content .lead {
  font-size: 1.18rem;
  color: #1f1f1f;
}

.article-content h2 {
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.2;
  margin-top: 42px;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.article-content ul {
  margin: 0 0 24px 22px;
}

.article-content li {
  margin-bottom: 12px;
  padding-left: 4px;
}

.info-box {
  margin: 28px 0;
  padding: 20px 22px;
  background: var(--soft);
  border-left: 4px solid var(--text);
  border-radius: 14px;
}

.info-box p {
  margin-bottom: 0;
}

blockquote {
  margin: 40px 0;
  padding: 18px 0 18px 24px;
  border-left: 3px solid var(--text);
  font-size: 1.32rem;
  line-height: 1.5;
  color: #202020;
  letter-spacing: -0.02em;
}

/* CTA */
.article-cta {
  margin-top: 50px;
  padding: 34px;
  background: linear-gradient(180deg, #f0ebe5 0%, #e7dfd6 100%);
  border-radius: 24px;
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.article-cta h3 {
  font-size: 1.7rem;
  margin-bottom: 10px;
  letter-spacing: -0.03em;
}

.article-cta p {
  margin-bottom: 20px;
  color: #3a3a3a;
}

.article-cta-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 600;
  transition: transform 0.2s ease, opacity 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-dark {
  background: var(--accent);
  color: #fff;
}

.btn-light {
  background: #fff;
  color: var(--text);
  border: 1px solid rgba(0, 0, 0, 0.08);
}

/* Responsive */
@media (max-width: 820px) {
  .topbar-inner {
    flex-direction: column;
    justify-content: center;
    padding: 14px 0;
  }

  .nav {
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
  }

  .article-hero {
    padding-top: 46px;
  }

  .article-cover img {
    border-radius: 22px;
  }

  .article-content-inner {
    padding: 34px 24px;
    border-radius: 22px;
  }

  .article-cta {
    padding: 24px;
  }

  blockquote {
    font-size: 1.15rem;
  }
}

@media (max-width: 520px) {
  .logo {
    font-size: 0.85rem;
    letter-spacing: 0.22em;
  }

  .nav a {
    font-size: 0.92rem;
  }

  .article-category {
    font-size: 0.86rem;
  }

  .article-content p,
  .article-content li {
    font-size: 1rem;
  }

  .article-subtitle {
    font-size: 1.05rem;
  }
}