/* ============================================
   CREATIVE MIND HABITS — V2
   Minimal, editorial, warm. Notion x Linear x Substack.
   ============================================ */

/* === FONT STACKS === */
:root {
  --font-heading: 'Inter', 'SF Pro', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', 'SF Pro', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* === LIGHT THEME === */
:root {
  --bg-primary: #F7F6F3;
  --bg-secondary: #EDEAE4;
  --bg-card: #FFFFFF;
  --bg-pill: #EDEAE4;
  --text-primary: #111111;
  --text-secondary: #6B6B6B;
  --text-muted: #999999;
  --text-faint: #BBBBBB;
  --border-subtle: rgba(0,0,0,0.06);
  --border-card: rgba(0,0,0,0.08);
  --rule: rgba(0,0,0,0.06);
  --btn-bg: #0B0B0B;
  --btn-text: #FFFFFF;
  --btn-hover: #222222;
  --accent: #0B0B0B;
  --accent-hover: #222222;
  --accent-gold: #B8903A;
  --accent-rust: #C75B39;
  --accent-green: #3D7A4F;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.08);

  /* Backward compat aliases */
  --bg-body: #F7F6F3;
  --bg-surface: #FFFFFF;
  --bg-muted: #EDEAE4;
  --bg-card-border: rgba(0,0,0,0.06);
  --text-heading: #111111;
  --accent-gold-text: #B8903A;
  --tag-bg: #111111;
  --tag-text: #F7F6F3;
  --tag-green-bg: #3D7A4F;
  --tag-green-text: #F7F6F3;
}

/* === DARK THEME === */
[data-theme="dark"] {
  --bg-primary: #141313;
  --bg-secondary: #1C1B1B;
  --bg-card: #1C1B1B;
  --bg-pill: #2A2828;
  --text-primary: #F5F2EE;
  --text-secondary: #9E9B95;
  --text-muted: #6E6B66;
  --text-faint: #4E4B46;
  --border-subtle: rgba(255,255,255,0.06);
  --border-card: rgba(255,255,255,0.08);
  --rule: rgba(255,255,255,0.06);
  --btn-bg: #F5F2EE;
  --btn-text: #111111;
  --btn-hover: #D9D5CE;
  --accent: #F5F2EE;
  --accent-hover: #D9D5CE;
  --accent-gold: #D4A84A;
  --accent-rust: #D97050;
  --accent-green: #5CA86A;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.4);

  --bg-body: #141313;
  --bg-surface: #1C1B1B;
  --bg-muted: #2A2828;
  --bg-card-border: rgba(255,255,255,0.06);
  --text-heading: #F5F2EE;
  --tag-bg: #F5F2EE;
  --tag-text: #141313;
  --tag-green-bg: #5CA86A;
  --tag-green-text: #141313;
}

/* === RESET & BASE === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 18px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-secondary);
  line-height: 1.65;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.15;
  letter-spacing: -0.3px;
  margin: 0;
}

h1 { font-size: 2.75rem; letter-spacing: -0.8px; }
h2 { font-size: 2rem; letter-spacing: -0.5px; }
h3 { font-size: 1.375rem; }
h4 { font-size: 1.1rem; }

a {
  color: var(--text-primary);
  text-decoration: none;
  transition: opacity 0.15s ease;
}

a:hover {
  opacity: 0.7;
}

p {
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  border-radius: 12px;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 28px;
}

.home-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ============================================
   HEADER — 3-segment: logo | nav | CTA
   ============================================ */

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

.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 28px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--text-primary);
  white-space: nowrap;
}

.nav-logo:hover {
  opacity: 0.7;
}

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

.site-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav a {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  color: #333333;
  transition: opacity 0.15s ease;
  white-space: nowrap;
}

[data-theme="dark"] .site-nav a {
  color: #CCCCCC;
}

.site-nav a:hover {
  opacity: 0.6;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 10px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  transition: background 0.15s ease;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
}

.nav-cta:hover {
  background: var(--btn-hover);
  color: var(--btn-text);
  opacity: 1;
}

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1.15rem;
  line-height: 1;
  color: var(--text-secondary);
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.theme-toggle:hover {
  color: var(--text-primary);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon {
  display: none;
}

.theme-toggle .icon-moon {
  display: inline;
}

[data-theme="dark"] .theme-toggle .icon-moon {
  display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
  display: inline;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 101;
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.25s ease;
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* ============================================
   HERO — 2-column
   ============================================ */

.lp-hero {
  padding: 80px 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--rule);
}

.lp-hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: center;
}

.lp-hero-eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--text-secondary);
  background: var(--bg-pill);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 1.5rem;
}

.lp-hero-title {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -1.2px;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.lp-hero-sub {
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.lp-hero-cta {
  display: inline-flex;
  align-items: center;
  padding: 14px 24px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  transition: background 0.15s ease;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.75rem;
}

.lp-hero-cta:hover {
  background: var(--btn-hover);
  color: var(--btn-text);
  opacity: 1;
}

.lp-hero-social {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.lp-hero-avatars {
  display: flex;
  align-items: center;
}

.lp-hero-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--bg-primary);
  margin-right: -8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: var(--text-muted);
}

.lp-hero-stars {
  font-size: 0.75rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.lp-hero-stars .star {
  color: var(--accent-gold);
}

.lp-hero-trust {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Hero diagram — right side */
.lp-hero-diagram {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.lp-diagram-img {
  width: 100%;
  height: auto;
  border-radius: 0;
}

.lp-diagram-img--dark { display: none; }
[data-theme="dark"] .lp-diagram-img--light { display: none; }
[data-theme="dark"] .lp-diagram-img--dark { display: block; }

/* ============================================
   VALUE PROP — 3 columns
   ============================================ */

.lp-value {
  padding: 80px 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--rule);
  text-align: center;
}

.lp-section-label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.lp-section-heading {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 3rem;
  letter-spacing: -0.3px;
}

.lp-value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  text-align: left;
}

.lp-value-card {
  padding: 2rem 1.75rem;
}

.lp-value-icon {
  width: 44px;
  height: 44px;
  background: var(--bg-pill);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

.lp-value-title {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.lp-value-desc {
  font-family: var(--font-body);
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   LATEST CONTENT — 3 card grid
   ============================================ */

.lp-latest {
  padding: 80px 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--rule);
}

.lp-latest-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 2rem;
}

.lp-latest-label {
  font-family: var(--font-body);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 2.4px;
  text-transform: uppercase;
  color: var(--text-muted);
}

.lp-latest-link {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: opacity 0.15s ease;
}

.lp-latest-link:hover {
  opacity: 0.6;
}

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

.lp-post-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.lp-post-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  opacity: 1;
}

.lp-post-image {
  width: 100%;
  height: 160px;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: flex-end;
  padding: 12px 14px;
}

.lp-post-image--thinking {
  background: linear-gradient(135deg, #EDE3D3 0%, #D4C3A8 100%);
}

.lp-post-image--system {
  background: linear-gradient(135deg, #D8CFC4 0%, #BFB09F 100%);
}

.lp-post-image--build {
  background: linear-gradient(135deg, #1E2433 0%, #2D3650 100%);
}

.lp-post-cover-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.lp-post-image-inner {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.lp-post-image--thinking .lp-post-image-inner { color: #8B6E4E; }
.lp-post-image--system .lp-post-image-inner { color: #7A6A58; }
.lp-post-image--build .lp-post-image-inner { color: #7B8FBD; }

.lp-post-cat-label {
  position: relative;
  z-index: 1;
  font-family: var(--font-body);
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
  background: rgba(0,0,0,0.12);
  color: rgba(0,0,0,0.55);
}

.lp-post-image--build .lp-post-cat-label {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.65);
}

.lp-post-body {
  padding: 1.25rem 1.25rem 1.5rem;
}

.lp-post-tag {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  margin-bottom: 0.625rem;
}

.lp-post-thinking { color: var(--accent-gold); }
.lp-post-system { color: var(--accent-rust); }
.lp-post-build { color: var(--accent-green); }

.lp-post-title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-bottom: 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.lp-post-excerpt {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.lp-post-footer {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.lp-post-dot {
  width: 3px;
  height: 3px;
  background: var(--text-faint);
  border-radius: 50%;
}

/* ============================================
   NEWSLETTER
   ============================================ */

.lp-newsletter {
  padding: 60px 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--rule);
}

.lp-newsletter-box {
  background: var(--bg-secondary);
  border-radius: 18px;
  padding: 3rem;
  display: grid;
  grid-template-columns: 160px 1fr 180px;
  gap: 2.5rem;
  align-items: center;
}

/* Paper plane column */
.lp-nl-plane {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.lp-nl-plane-img {
  width: 120px;
  height: 120px;
  border-radius: 0;
  opacity: 0.85;
}

[data-theme="dark"] .lp-nl-plane-img {
  filter: invert(1);
}

/* Center content column */
.lp-nl-center {
  min-width: 0;
}

.lp-newsletter-heading {
  font-family: var(--font-heading);
  font-size: 1.625rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.lp-newsletter-sub {
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.lp-newsletter-form {
  margin-bottom: 0.875rem;
}

.lp-nl-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* Perks column */
.lp-nl-perks {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  flex-shrink: 0;
}

.lp-nl-perk {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-card);
  border-radius: 10px;
  padding: 10px 14px;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.lp-nl-perk-icon {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  color: var(--text-muted);
}

/* ============================================
   IDENTITY
   ============================================ */

.lp-identity {
  padding: 80px 0;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--rule);
  text-align: center;
}

.lp-identity-heading {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.lp-identity-text {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.6;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 0.625rem;
}

.lp-identity-text:last-child {
  margin-bottom: 0;
}

/* ============================================
   FOOTER — 3-column minimal
   ============================================ */

.site-footer-home {
  border-top: 1px solid var(--border-subtle);
  padding: 24px 0;
  background: var(--bg-primary);
}

.footer-home-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copyright {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.footer-home-links {
  display: flex;
  gap: 1.5rem;
}

.footer-home-links a {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--text-secondary);
  transition: opacity 0.15s ease;
}

.footer-home-links a:hover {
  opacity: 0.6;
}

.footer-social {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

.footer-social-link {
  color: var(--text-muted);
  transition: opacity 0.15s ease;
}

.footer-social-link:hover {
  opacity: 0.6;
}

/* ============================================
   BUTTONS (shared)
   ============================================ */

.btn-primary {
  display: inline-flex;
  align-items: center;
  padding: 14px 24px;
  background: var(--btn-bg);
  color: var(--btn-text);
  border-radius: 12px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  transition: background 0.15s ease;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background: var(--btn-hover);
  color: var(--btn-text);
  opacity: 1;
}

/* ============================================
   LEGACY PAGES (non-homepage)
   ============================================ */

.site-main {
  padding: 2rem 0;
  min-height: 70vh;
}

.site-footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
  padding: 2.5rem 0;
  margin-top: 4rem;
}

.footer-content {
  text-align: center;
}

.footer-content p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin: 0.5rem 0;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
  justify-content: center;
  margin-top: 0.5rem;
  flex-wrap: wrap;
}

.footer-subscribe a {
  color: var(--text-primary);
}

.social-links {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  margin-bottom: 1rem;
}

.social-link {
  color: var(--text-muted);
  display: flex;
  align-items: center;
}

.social-link:hover {
  opacity: 0.6;
}

.footer-link {
  color: var(--text-muted);
  font-size: 0.85em;
}

.footer-link:hover {
  opacity: 0.6;
}

/* ============================================
   BASE LAYOUT — prose content spacing
   Applies to markdown pages (about, privacy, etc.)
   ============================================ */

.site-main .container > h2,
.site-main .container > h3,
.site-main .container > h4 {
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
}

.site-main .container > p {
  margin: 0.75rem 0;
  line-height: 1.7;
}

.site-main .container > ul,
.site-main .container > ol {
  margin: 0.75rem 0;
  padding-left: 1.5rem;
  color: var(--text-secondary);
}

.site-main .container > li {
  margin: 0.4rem 0;
  color: var(--text-secondary);
  line-height: 1.6;
}

.site-main .container ul li,
.site-main .container ol li {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0.4rem 0;
}

.page-header {
  padding-top: 1.75rem;
  padding-bottom: 1.5rem;
  margin-bottom: 1.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.page-header-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  font-weight: 500;
}

.page-intro {
  color: var(--text-secondary);
  font-size: 1.1em;
  line-height: 1.6;
}

.archive-list { max-width: 800px; margin: 0 auto; }
.archive-item {
  margin-bottom: 2.5rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.archive-date {
  display: block;
  color: var(--text-muted);
  font-size: 0.9em;
  margin-bottom: 0.5rem;
}

.archive-title { margin-bottom: 0.75rem; font-size: 1.8em; line-height: 1.3; }
.archive-title a { color: var(--text-primary); }
.archive-excerpt { color: var(--text-secondary); line-height: 1.6; margin-bottom: 1rem; }
.read-more { color: var(--text-primary); font-weight: 600; font-size: 0.95em; }
.archive-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; max-width: 800px; margin: 2rem auto 0; }

.post-single { max-width: 680px; margin: 0 auto; }
.post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.post-title { font-size: 2rem; margin-bottom: 1rem; line-height: 1.2; }
.post-meta { font-size: 0.85rem; color: var(--text-muted); }
.post-image { margin: 2rem 0; }
.post-image img { width: 100%; border-radius: 12px; }
.post-content {
  font-family: var(--font-body);
  color: var(--text-secondary);
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-content h2 {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}
.post-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}
.post-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
}

.post-content p { margin: 0.75rem 0; }
.post-content ul, .post-content ol { margin: 1rem 0; padding-left: 2rem; }
.post-content li { margin: 0.5rem 0; color: var(--text-secondary); }
.post-content blockquote {
  border-left: 2px solid var(--border-subtle);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--text-muted);
}
.post-content code { background: var(--bg-muted); padding: 0.125rem 0.375rem; border-radius: 4px; font-size: 0.9em; }
.post-content pre { background: var(--bg-muted); padding: 1rem; border-radius: 8px; overflow-x: auto; margin: 1.5rem 0; }
.post-content pre code { background: none; padding: 0; }

.related-posts {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
}
.related-posts h2 {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.related-posts ul { list-style: none; padding: 0; margin: 0; }
.related-posts li { margin: 0.5rem 0; }
.related-posts li a { font-size: 0.95rem; color: var(--text-secondary); text-decoration: none; }
.related-posts li a:hover { color: var(--text-primary); }

.post-subscribe {
  margin-top: 3rem;
  padding: 2rem 2.5rem;
  background: var(--bg-secondary);
  border-radius: 12px;
}

.post-subscribe-heading { font-size: 1.125rem; font-weight: 600; color: var(--text-primary); margin-bottom: 0.375rem; }
.post-subscribe-sub { font-size: 0.9rem; color: var(--text-muted); margin-bottom: 1.25rem; }
.post-footer { margin-top: 2rem; padding-top: 2rem; border-top: 1px solid var(--border-subtle); }
.post-tag {
  display: inline-block;
  padding: 0.25rem 0.7rem;
  background: var(--tag-bg);
  color: var(--tag-text);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 500;
  text-decoration: none;
}

.post-tag:hover {
  opacity: 0.85;
  color: var(--tag-text);
}

.tag-link {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: background 0.2s ease;
}

.tag-link:hover {
  background: var(--btn-bg);
  color: var(--btn-text);
  opacity: 1;
}

.tag-cloud {
  max-width: 700px;
  margin: 0 auto;
}

.tag-cloud-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

/* === CARD GRID (resources/projects page) === */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

.project-grid-featured {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.75rem;
}

.h-resource-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  text-decoration: none;
  transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.h-resource-card:hover {
  border-color: var(--text-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  opacity: 1;
}

.h-resource-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.4px;
  color: var(--accent-rust);
}

.h-resource-label.green { color: var(--accent-green); }

.h-resource-title {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1.25rem;
  line-height: 1.2;
}

.h-resource-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.55;
}

.project-grid-featured .h-resource-card:first-child {
  padding: 2rem 2rem 1.75rem;
  border-color: var(--text-primary);
}

.project-grid-featured .h-resource-card:first-child .h-resource-title {
  font-size: 1.5rem;
}

.project-grid-featured .h-resource-card:first-child .h-resource-desc {
  font-size: 0.9375rem;
}

/* Section labels */
.section-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent-gold);
  margin-bottom: 2rem;
}

.section-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.section-view-all {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.section-view-all:hover { opacity: 0.6; }

/* Post list */
.post-list {
  display: flex;
  flex-direction: column;
}

.post-list-item {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.5rem 0;
  border-top: 1px solid var(--rule);
}

.post-list-item:first-child { border-top: none; }

.post-list-item:hover {
  opacity: 1;
  padding-left: 0.5rem;
}

.post-list-item:hover .post-list-title {
  opacity: 0.6;
}

.post-list-date {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 1.2px;
  text-transform: uppercase;
}

.post-list-body {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  min-width: 0;
}

.post-list-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  transition: opacity 0.15s ease;
}

.post-list-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-list-tag {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--accent-rust);
}

.post-list-tag.green { color: var(--accent-green); }

/* Utility buttons */
.btn-accent {
  display: inline-block;
  padding: 10px 20px;
  background: var(--accent-gold);
  color: #FFFFFF;
  text-decoration: none;
  border-radius: 8px;
  font-size: 0.875em;
  font-weight: 500;
}

.btn-accent:hover { opacity: 0.9; }

.btn-outline {
  display: inline-block;
  padding: 10px 20px;
  background: transparent;
  color: var(--text-primary);
  text-decoration: none;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  font-size: 0.875em;
}

.btn-outline:hover { border-color: var(--text-secondary); }

.form-label { display: block; color: var(--text-secondary); font-weight: 500; margin-bottom: 0.5rem; font-size: 0.9em; }

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  font-size: 1em;
  background: var(--bg-surface);
  color: var(--text-primary);
}

.form-input:focus {
  outline: none;
  border-color: var(--text-primary);
}

.reading-time { color: var(--text-muted); font-size: 0.85rem; }
.back-link { color: var(--text-muted); font-size: 0.875rem; }
.back-link:hover { color: var(--text-primary); opacity: 1; }

.callout {
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border-left: 2px solid var(--accent-gold);
  border-radius: 8px;
  margin: 2rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.resource-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin: 2rem 0;
}

.resource-card {
  background: var(--bg-card);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  overflow: hidden;
}

.resource-card-bar { height: 2px; background: var(--accent-gold); }
.resource-card-body { padding: 1.5rem; }
.resource-card-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.resource-card-meta { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1rem; }
.resource-pill, .project-status {
  display: inline-flex;
  align-items: center;
  background: var(--bg-muted);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 6px 12px;
}

.resource-card-label { font-size: 0.8em; color: var(--text-muted); margin-bottom: 0.5rem; }
.resource-outcome { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.55; margin-top: 0.85rem; }
.resource-updated { margin-top: 0.8rem; margin-bottom: 0; color: var(--text-muted); font-size: 0.8rem; }

/* === HANGUL + KOREAN CHAT (keep unchanged) === */
.hangul-tool { max-width: 760px; margin: 0 auto; text-align: center; }
.hangul-header { max-width: 600px; margin: 0 auto; padding: 2.5rem 0 0.625rem; }
.hangul-header h1 { font-size: clamp(2rem, 6vw, 3rem); font-weight: 700; }
.hangul-input-wrap { width: 100%; max-width: 520px; margin: 2rem auto 0; }
.hangul-input {
  width: 100%; padding: 16px 20px; font-size: 1.2rem;
  border: 1.5px solid var(--border-subtle); border-radius: 12px;
  background: var(--bg-surface); color: var(--text-primary); text-align: center;
  box-shadow: var(--shadow-sm);
}
.hangul-input:focus { outline: none; border-color: var(--text-primary); }
.hangul-presets, .hangul-syllables {
  display: flex; flex-wrap: wrap; gap: 0.5rem;
  justify-content: center; max-width: 560px; margin: 1rem auto 0;
}
.preset-btn {
  cursor: pointer; border: 1px solid var(--border-subtle);
  background: var(--bg-surface); border-radius: 999px;
  padding: 6px 16px; font-size: 0.875rem; color: var(--text-secondary);
}
.preset-btn:hover { border-color: var(--accent-rust); color: var(--accent-rust); }
.hangul-syllables { margin-top: 2.25rem; }
.syllable-btn {
  cursor: pointer; border: 0; border-bottom: 3px solid transparent;
  background: transparent; color: var(--text-primary);
  font-size: 2rem; font-weight: 700; line-height: 1; padding: 8px 6px;
}
.syllable-btn:hover, .syllable-btn.active {
  color: var(--accent-rust); border-bottom-color: var(--accent-rust);
}
.syllable-btn:disabled { color: var(--text-faint); cursor: default; }
.hangul-result { margin: 2.5rem auto 3.5rem; }
.hangul-big-char { font-size: clamp(4rem, 18vw, 6rem); font-weight: 800; color: var(--text-primary); }
.hangul-arrow { color: var(--accent-rust); font-size: 1.6rem; margin: 0.75rem 0 1rem; }
.hangul-jamo-grid { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }
.hangul-jamo-card {
  min-width: 140px; border: 1px solid var(--border-subtle);
  border-radius: 12px; background: var(--bg-card); padding: 1.35rem 1.5rem;
}
.hangul-jamo-card-0 { color: var(--accent-rust); }
.hangul-jamo-card-1 { color: var(--accent-green); }
.hangul-jamo-card-2 { color: var(--text-primary); }
.hangul-jamo-role { font-size: 0.7rem; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }
.hangul-jamo-symbol { font-size: 4rem; font-weight: 800; line-height: 1; margin: 0.5rem 0; }
.hangul-jamo-roman { font-family: ui-monospace, monospace; font-size: 0.85rem; }
.hangul-jamo-name { color: var(--text-muted); font-size: 0.78rem; line-height: 1.4; margin-top: 0.5rem; }
.hangul-romanization {
  margin-top: 1.75rem; display: inline-flex; align-items: center; gap: 0.75rem;
  background: var(--text-primary); color: var(--bg-primary);
  padding: 10px 24px; border-radius: 999px;
  font-family: ui-monospace, monospace; font-size: 0.9rem;
}
.hangul-romanization span { opacity: 0.6; font-size: 0.72rem; }
.hangul-empty { margin-top: 3rem; color: var(--text-faint); font-family: ui-monospace, monospace; font-size: 0.8rem; }
.hangul-empty-jamo { font-size: 2.5rem; margin-bottom: 0.75rem; }

/* Korean Chat */
.chat-container {
  max-width: 800px; margin: 0 auto;
  background: var(--bg-card); border: 1px solid var(--border-subtle);
  border-radius: 14px; overflow: hidden; box-shadow: var(--shadow-md);
}
.chat-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 1rem 1.25rem; border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-secondary);
}
.chat-status-dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #22c55e; margin-left: 0.5rem; }
.chat-level-select {
  padding: 6px 12px; border: 1px solid var(--border-subtle);
  border-radius: 8px; background: var(--bg-card); color: var(--text-primary);
  font-size: 0.85rem; cursor: pointer;
}
.chat-messages { height: 460px; overflow-y: auto; padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; }
.chat-message { display: flex; flex-direction: column; max-width: 82%; }
.chat-message.user { align-self: flex-end; align-items: flex-end; }
.chat-message.bot { align-self: flex-start; align-items: flex-start; }
.chat-bubble { padding: 0.875rem 1.125rem; border-radius: 14px; line-height: 1.6; font-size: 0.95rem; word-break: break-word; }
.chat-message.user .chat-bubble { background: var(--btn-bg); color: var(--btn-text); }
.chat-message.bot .chat-bubble { background: var(--bg-secondary); color: var(--text-primary); }
.chat-input-area {
  border-top: 1px solid var(--border-subtle); padding: 1rem 1.25rem;
  background: var(--bg-primary);
}
.chat-input-row { display: flex; gap: 0.625rem; align-items: flex-end; }
.chat-input {
  flex: 1; padding: 10px 14px; border: 1px solid var(--border-subtle);
  border-radius: 10px; font-size: 0.95em; font-family: inherit;
  background: var(--bg-card); color: var(--text-primary); resize: none;
  min-height: 44px; max-height: 120px;
}
.chat-input:focus { outline: none; border-color: var(--text-primary); }
.chat-send-btn {
  padding: 10px 18px; background: var(--btn-bg); color: var(--btn-text);
  border: none; border-radius: 10px; font-weight: 600; font-size: 0.9em;
  cursor: pointer;
}
.chat-send-btn:hover { background: var(--btn-hover); }
.chat-send-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.chat-entry-banner {
  max-width: 800px; margin: 0 auto 1rem auto;
  border: 1px solid var(--border-subtle); border-radius: 10px;
  background: var(--bg-secondary); padding: 0.65rem 0.9rem;
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
}
.chat-entry-text { color: var(--text-secondary); font-size: 0.9rem; }
.chat-entry-link { font-size: 0.82rem; color: var(--accent-gold); }
.chat-entry-link:hover { opacity: 0.7; }

/* ============================================
   MOBILE RESPONSIVE
   ============================================ */

@media (max-width: 768px) {
  html { font-size: 15px; }
  .container { padding: 0 1rem; }
  .home-inner { padding: 0 1rem; }

  .nav-inner { padding: 0 1rem; gap: 0.75rem; }
  .nav-logo { font-size: 0.6875rem; letter-spacing: 1.2px; }
  .nav-cta { padding: 8px 14px; font-size: 0.75rem; border-radius: 8px; }

  .site-nav {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--bg-primary); border-bottom: 1px solid var(--border-subtle);
    flex-direction: column; align-items: flex-start; gap: 0;
    padding: 0; max-height: 0; overflow: hidden;
    transition: max-height 0.3s ease;
  }
  .site-nav.active { max-height: 400px; overflow-y: auto; }
  .site-nav a {
    display: flex; align-items: center; padding: 0.875rem 1.25rem;
    width: 100%; min-height: 44px; font-size: 0.875rem;
    border-bottom: 1px solid var(--border-subtle);
  }
  .site-nav a:last-child { border-bottom: none; }

  .nav-toggle { display: flex; }

  .lp-hero { padding: 48px 0 40px; }
  .lp-hero-grid { grid-template-columns: 1fr; gap: 2rem; }
  .lp-hero-title { font-size: 2rem; max-width: 100%; }
  .lp-hero-diagram { padding: 1rem; }
  .lp-diagram-svg { max-width: 260px; }

  .lp-value { padding: 48px 0; }
  .lp-section-heading { font-size: 1.375rem; margin-bottom: 2rem; }
  .lp-value-grid { grid-template-columns: 1fr; gap: 1rem; }
  .lp-value-card { padding: 1.5rem 0; }

  .lp-latest { padding: 48px 0; }
  .lp-latest-grid { grid-template-columns: 1fr; gap: 1rem; }

  .lp-newsletter { padding: 48px 0; }
  .lp-newsletter-box { grid-template-columns: 1fr; padding: 2rem 1.25rem; gap: 1.5rem; text-align: center; }
  .lp-nl-plane { display: none; }
  .lp-nl-perks { flex-direction: column; align-items: stretch; }
  .lp-newsletter-heading { font-size: 1.375rem; }

  .lp-identity { padding: 48px 0; }
  .lp-identity-heading { font-size: 1.375rem; }

  .site-footer-home { padding: 20px 0; }
  .footer-home-inner { flex-direction: column; text-align: center; gap: 1rem; padding: 0 1rem; }

  .card-grid { grid-template-columns: 1fr; }
  .project-grid-featured { grid-template-columns: 1fr; }
  .post-list-item { grid-template-columns: 1fr; gap: 0.5rem; }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.375rem; }

  .site-main { padding: 2rem 0; }
  .resource-grid { grid-template-columns: 1fr; }
  .chat-messages { height: 360px; }
  .chat-message { max-width: 92%; }
}

@media (min-width: 641px) and (max-width: 960px) {
  .lp-hero-grid { gap: 2rem; }
  .lp-hero-title { font-size: 2.25rem; }
  .lp-value-grid { grid-template-columns: 1fr 1fr; }
  .lp-latest-grid { grid-template-columns: 1fr 1fr; }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .lp-newsletter-box { grid-template-columns: 100px 1fr; }
  .lp-nl-perks { display: none; }
}