:root {
  --ink: #0a1628;
  --navy: #1a2d4a;
  --muted: #64748b;
  --line: #e2e8f0;
  --canvas: #f8f6f3;
  --cream: #f0ebe3;
  --white: #ffffff;
  --accent: #3b6ea5;
  --radius: 2px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Source Sans 3", system-ui, sans-serif;
  color: var(--ink);
  background: var(--white);
  line-height: 1.7;
  font-size: 1.0625rem;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

/* ── Header ── */

.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 1rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  color: var(--ink);
  text-decoration: none;
}

.brand img {
  width: 48px;
  height: 48px;
  object-fit: contain;
  flex-shrink: 0;
}

.brand-text {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-tag {
  font-size: 0.68rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.site-nav {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.2s;
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.25rem;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--ink);
  margin: 5px 0;
}

/* ── Hero ── */

.hero {
  background: var(--ink);
}

.hero-visual {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  overflow: hidden;
}

.hero-art {
  width: 100%;
  height: clamp(280px, 42vw, 480px);
  object-fit: cover;
  object-position: center 40%;
  display: block;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem 1.75rem;
  background: linear-gradient(
    180deg,
    rgba(10, 22, 40, 0.35) 0%,
    rgba(10, 22, 40, 0.2) 50%,
    rgba(10, 22, 40, 0.55) 100%
  );
}

.hero-logo {
  width: 88px;
  height: 88px;
  object-fit: contain;
  margin-bottom: 1.25rem;
  filter: drop-shadow(0 2px 12px rgba(0, 0, 0, 0.3));
}

.hero h1 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  color: var(--white);
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
  max-width: 560px;
}

.hero p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.88);
  max-width: 440px;
  line-height: 1.6;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.35);
}

/* ── Sections ── */

.section {
  padding: 4.5rem 1.75rem;
}

.section--alt {
  background: var(--canvas);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section-inner {
  max-width: 1080px;
  margin: 0 auto;
}

.section-header {
  margin-bottom: 3rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--line);
}

.section-header h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.75rem, 3vw, 2.125rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 0.35rem;
}

.section-header p {
  color: var(--muted);
  font-size: 1rem;
}

.section-label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

/* ── Blog grid (editorial cards) ── */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.blog-card {
  background: var(--white);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--line);
  transition: box-shadow 0.25s, transform 0.25s;
}

.blog-card:hover {
  box-shadow: 0 12px 40px rgba(10, 22, 40, 0.08);
  transform: translateY(-3px);
}

.blog-card__image {
  aspect-ratio: 4 / 3;
  display: block;
  overflow: hidden;
  text-decoration: none;
}

.blog-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s ease;
}

.blog-card:hover .blog-card__image img {
  transform: scale(1.04);
}

.blog-card__image .crop-left { object-position: 20% center; }
.blog-card__image .crop-center { object-position: 50% center; }
.blog-card__image .crop-right { object-position: 80% center; }

.blog-card__image--chart img {
  object-fit: contain;
  background: var(--canvas);
  padding: 1rem;
}

.blog-card__body {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.blog-card__tag {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 0.75rem;
}

.blog-card h3 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.3rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin-bottom: 0.65rem;
  line-height: 1.35;
}

.blog-card h3 a {
  color: inherit;
  text-decoration: none;
}

.blog-card h3 a:hover {
  color: var(--accent);
}

.blog-card p {
  color: var(--muted);
  font-size: 0.95rem;
  flex: 1;
  line-height: 1.6;
}

.blog-card__meta {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.75rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.read-more {
  display: inline-block;
  margin-top: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--ink);
}

.read-more:hover {
  color: var(--accent);
}

/* ── About ── */

.about-strip {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 4rem;
  align-items: center;
}

.about-strip__logo {
  width: 180px;
  height: 180px;
  object-fit: contain;
  margin: 0 auto;
}

.about-strip h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.875rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  margin-bottom: 1.25rem;
}

.about-strip p {
  color: var(--muted);
  margin-bottom: 1rem;
  max-width: 520px;
}

/* ── Post page ── */

.post-hero {
  padding: 3.5rem 1.75rem 2.5rem;
  text-align: center;
  background: var(--canvas);
  border-bottom: 1px solid var(--line);
}

.post-hero .post-tag {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1rem;
}

.post-hero h1 {
  font-family: "Fraunces", Georgia, serif;
  font-size: clamp(1.875rem, 4vw, 2.75rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  max-width: 720px;
  margin: 0 auto 0.75rem;
  line-height: 1.2;
  color: var(--ink);
}

.post-hero .post-meta {
  font-size: 0.8rem;
  color: var(--muted);
  letter-spacing: 0.04em;
}

.post-content {
  max-width: 640px;
  margin: 0 auto;
  padding: 3.5rem 1.75rem 4rem;
}

.post-content h2 {
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.4rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 2.5rem 0 0.75rem;
}

.post-content p {
  margin-bottom: 1.25rem;
  color: var(--ink);
}

.post-figure {
  margin: 2rem 0;
  text-align: center;
}

.post-figure img {
  width: 100%;
  max-width: 100%;
  border: 1px solid var(--line);
  background: var(--white);
}

.post-figure figcaption {
  margin-top: 0.65rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.post-content ul,
.post-content ol {
  margin: 0 0 1.25rem 1.5rem;
  color: var(--ink);
}

.post-content li {
  margin-bottom: 0.5rem;
}

.post-content blockquote {
  border-left: 2px solid var(--ink);
  padding: 0.5rem 0 0.5rem 1.5rem;
  margin: 2rem 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.2rem;
  color: var(--navy);
  font-style: italic;
  line-height: 1.5;
}

.post-content .tip-box {
  border: 1px solid var(--line);
  background: var(--canvas);
  padding: 1.5rem;
  margin: 2rem 0;
}

.post-content .tip-box strong {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--ink);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.post-nav {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 1.75rem 4rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}

.post-nav a {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--muted);
}

.post-nav a:hover {
  color: var(--ink);
}

/* ── Footer ── */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 2.5rem 1.75rem;
  text-align: center;
  background: var(--white);
}

.site-footer p {
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.35rem;
}

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

.site-footer a:hover {
  text-decoration: underline;
}

/* ── Responsive ── */

@media (max-width: 900px) {
  .blog-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1rem 1.75rem 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--line);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.04);
  }

  .site-nav.open {
    display: flex;
  }

  .site-header {
    position: relative;
  }

  .about-strip {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
  }

  .about-strip p {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-art {
    height: 260px;
  }

  .hero-logo {
    width: 72px;
    height: 72px;
  }

}