:root {
  /* Core Colors */
  --clr-midnight: #090E0F;
  --clr-urban: #101617;
  --clr-concrete: #171F20;
  --clr-graphite: #202A2A;
  --clr-slate: #303A39;
  --clr-mineral: #46514F;
  
  /* Glass / Transparencies */
  --clr-glass: rgba(27, 38, 38, 0.80);
  --clr-frosted: rgba(72, 84, 80, 0.42);
  --clr-highlight: rgba(235, 231, 219, 0.08);
  
  /* Accents */
  --clr-copper: #9A624D;
  --clr-bronze: #AD7955;
  --clr-brass: #B89B61;
  --clr-amber: #C39A58;
  --clr-olive: #596B5D;
  --clr-teal: #477873;
  --clr-blue: #5F7883;
  --clr-clay: #8D6257;
  --clr-plum: #6C5865;
  --clr-limestone: #D9D5CA;
  --clr-parchment: #E5E0D5;
  --clr-ivory: #F0ECE2;
  --clr-white: #F7F5EF;
  
  /* Text */
  --clr-text-primary: #F2F1EA;
  --clr-text-secondary: #BBC1BB;
  --clr-text-muted: #89928D;
  --clr-text-dark: #202725;
  
  /* Spacing */
  --sp-4: 4px;
  --sp-8: 8px;
  --sp-16: 16px;
  --sp-24: 24px;
  --sp-40: 40px;
  --sp-64: 64px;
  
  /* Layout */
  --container-max: 1280px;
  --header-height: 64px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { font-family: system-ui, -apple-system, sans-serif; line-height: 1.5; background: var(--clr-midnight); color: var(--clr-text-primary); scroll-behavior: smooth; font-size: 16px; }
body { margin: 0; padding: 0; min-height: 100vh; display: flex; flex-direction: column; overflow-x: hidden; overflow-wrap: anywhere; }
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; transition: color 0.2s, background-color 0.2s, border-color 0.2s; }
ul, ol { margin: 0; padding: 0; list-style: none; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 500; line-height: 1.2; color: var(--clr-white); }
p { margin: 0 0 var(--sp-16) 0; color: var(--clr-text-secondary); }
button { font: inherit; cursor: pointer; border: none; background: transparent; color: inherit; padding: 0; }
fieldset { border: none; padding: 0; margin: 0; }

/* Focus States */
:focus-visible { outline: 2px solid var(--clr-teal); outline-offset: 2px; }

/* Typography */
.text-h1 { font-size: clamp(2rem, 4vw, 3.5rem); letter-spacing: -0.02em; margin-bottom: var(--sp-24); }
.text-h2 { font-size: clamp(1.5rem, 3vw, 2.5rem); letter-spacing: -0.01em; margin-bottom: var(--sp-16); }
.text-h3 { font-size: clamp(1.25rem, 2vw, 1.75rem); margin-bottom: var(--sp-16); }
.text-overline { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.1em; color: var(--clr-brass); margin-bottom: var(--sp-8); display: block; }
.text-lead { font-size: 1.125rem; color: var(--clr-text-secondary); margin-bottom: var(--sp-24); max-width: 60ch; }
.text-meta { font-size: 0.875rem; color: var(--clr-text-muted); }

/* Containers & Layouts */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 var(--sp-24); }
.section { padding: var(--sp-64) 0; }
.section-large { padding: calc(var(--sp-64) * 2) 0; }
.main-content { flex: 1; }

/* Header */
.site-header { height: var(--header-height); background: var(--clr-glass); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); border-bottom: 1px solid var(--clr-frosted); position: relative; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 100%; padding: 0 var(--sp-24); max-width: var(--container-max); margin: 0 auto; }
.brand { display: flex; align-items: center; gap: var(--sp-8); font-weight: 600; color: var(--clr-white); letter-spacing: 0.02em; }
.brand-mark { width: 24px; height: 24px; fill: var(--clr-teal); }
.nav-desktop { display: none; }
.nav-desktop ul { display: flex; gap: var(--sp-24); }
.nav-desktop a { font-size: 0.875rem; color: var(--clr-text-secondary); padding: var(--sp-8) 0; }
.nav-desktop a:hover, .nav-desktop a[aria-current="page"] { color: var(--clr-white); border-bottom: 2px solid var(--clr-teal); }
.nav-toggle { display: block; padding: var(--sp-8); width: 40px; height: 40px; }
.nav-toggle-icon { width: 100%; height: 2px; background: var(--clr-white); position: relative; display: block; transition: 0.2s; }
.nav-toggle-icon::before, .nav-toggle-icon::after { content: ''; position: absolute; width: 100%; height: 2px; background: var(--clr-white); left: 0; transition: 0.2s; }
.nav-toggle-icon::before { top: -8px; }
.nav-toggle-icon::after { bottom: -8px; }

/* Mobile Menu Overlay */
.mobile-nav-overlay { position: fixed; inset: 0; background: var(--clr-urban); z-index: 90; display: flex; flex-direction: column; padding: calc(var(--header-height) + var(--sp-40)) var(--sp-24) var(--sp-40); opacity: 0; pointer-events: none; transition: opacity 0.3s ease; }
.mobile-nav-overlay.is-active { opacity: 1; pointer-events: auto; }
.mobile-nav-overlay a { display: block; font-size: 1.5rem; color: var(--clr-white); padding: var(--sp-16) 0; border-bottom: 1px solid var(--clr-graphite); }
.mobile-nav-overlay a:hover { color: var(--clr-teal); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; padding: 12px 24px; font-size: 0.875rem; font-weight: 500; text-transform: uppercase; letter-spacing: 0.05em; border-radius: 2px; transition: all 0.2s; }
.btn-primary { background: var(--clr-teal); color: var(--clr-white); border: 1px solid var(--clr-teal); }
.btn-primary:hover { background: transparent; color: var(--clr-teal); }
.btn-secondary { background: transparent; color: var(--clr-white); border: 1px solid var(--clr-frosted); }
.btn-secondary:hover { border-color: var(--clr-copper); color: var(--clr-copper); }
.btn-accent { color: var(--clr-copper); font-size: 0.875rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; display: inline-flex; align-items: center; gap: var(--sp-8); margin-top: var(--sp-16); }
.btn-accent::after { content: '→'; transition: transform 0.2s; }
.btn-accent:hover::after { transform: translateX(4px); }

/* Glassmorphism Panels */
.glass-panel { background: var(--clr-glass); border: 1px solid var(--clr-frosted); border-radius: 4px; box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2); position: relative; overflow: hidden; }
.glass-panel::before { content: ''; position: absolute; inset: 0; background: linear-gradient(135deg, var(--clr-highlight) 0%, transparent 50%); pointer-events: none; }

/* Split Cards (Desktop: Image | Gap | Content, Mobile: Image / Gap / Content) */
.split-card { display: flex; flex-direction: column; gap: var(--sp-24); margin-bottom: var(--sp-40); background: transparent; }
.split-card-img { width: 100%; aspect-ratio: 16/9; position: relative; overflow: hidden; border: 1px solid var(--clr-graphite); border-radius: 2px; }
.split-card-img img { width: 100%; height: 100%; object-fit: cover; }
.split-card-content { display: flex; flex-direction: column; justify-content: center; }
.split-card-tags { display: flex; flex-wrap: wrap; gap: var(--sp-8); margin-bottom: var(--sp-16); }
.tag { font-size: 0.75rem; padding: 4px 8px; background: var(--clr-graphite); border: 1px solid var(--clr-slate); color: var(--clr-text-secondary); border-radius: 2px; }

/* Hero Section */
.hero { display: flex; flex-direction: column; gap: var(--sp-40); padding: var(--sp-64) 0; }
.hero-content { display: flex; flex-direction: column; justify-content: center; }
.hero-actions { display: flex; flex-wrap: wrap; gap: var(--sp-16); margin-top: var(--sp-24); }
.hero-visual { width: 100%; aspect-ratio: 4/3; position: relative; border: 1px solid var(--clr-frosted); border-radius: 2px; overflow: hidden; }
.hero-visual img { width: 100%; height: 100%; object-fit: cover; }

/* Sequence Section */
.sequence-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-24); margin-top: var(--sp-40); }
.sequence-step { padding: var(--sp-24); background: var(--clr-concrete); border: 1px solid var(--clr-graphite); border-radius: 2px; }
.sequence-step-num { font-size: 0.875rem; color: var(--clr-blue); font-weight: 600; margin-bottom: var(--sp-8); display: block; }

/* Topic Pages */
.topic-header { margin-bottom: var(--sp-64); padding-bottom: var(--sp-24); border-bottom: 1px solid var(--clr-slate); }
.article-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-64); }
.article-main { font-size: 1.0625rem; color: var(--clr-text-secondary); }
.article-main h2 { margin-top: var(--sp-40); color: var(--clr-white); font-size: 1.5rem; }
.article-main h3 { margin-top: var(--sp-24); font-size: 1.25rem; color: var(--clr-text-primary); }
.article-main ul { margin-bottom: var(--sp-24); padding-left: var(--sp-24); list-style: square; color: var(--clr-text-secondary); }
.article-main li { margin-bottom: var(--sp-8); }
.article-main strong { color: var(--clr-white); font-weight: 600; }
.info-box { padding: var(--sp-24); background: var(--clr-concrete); border-left: 4px solid var(--clr-olive); margin: var(--sp-40) 0; }
.info-box h4 { margin-bottom: var(--sp-8); color: var(--clr-white); text-transform: uppercase; font-size: 0.875rem; letter-spacing: 0.05em; }
.related-guides { padding: var(--sp-40); background: var(--clr-urban); border: 1px solid var(--clr-graphite); margin-top: var(--sp-64); }
.related-list { display: grid; grid-template-columns: 1fr; gap: var(--sp-16); margin-top: var(--sp-24); }
.related-item { padding: var(--sp-16); background: var(--clr-midnight); border: 1px solid var(--clr-slate); display: block; transition: border-color 0.2s; }
.related-item:hover { border-color: var(--clr-copper); }

/* Forms */
.form-group { margin-bottom: var(--sp-24); }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: var(--clr-text-primary); margin-bottom: var(--sp-8); }
.form-control { width: 100%; background: var(--clr-concrete); border: 1px solid var(--clr-slate); color: var(--clr-white); padding: 12px 16px; font-size: 1rem; border-radius: 2px; transition: border-color 0.2s; }
.form-control:focus { outline: none; border-color: var(--clr-teal); background: var(--clr-graphite); }
textarea.form-control { min-height: 120px; resize: vertical; }
.form-message { display: none; padding: var(--sp-16); margin-bottom: var(--sp-24); background: var(--clr-concrete); border-left: 4px solid var(--clr-teal); color: var(--clr-white); }
.form-message.is-active { display: block; }

/* Cookie Banner */
.cookie-banner { position: fixed; bottom: 0; left: 0; width: 100%; background: var(--clr-glass); backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); border-top: 1px solid var(--clr-frosted); padding: var(--sp-24); z-index: 900; display: none; }
.cookie-banner.is-visible { display: block; }
.cookie-content { max-width: var(--container-max); margin: 0 auto; display: flex; flex-direction: column; gap: var(--sp-16); }
.cookie-actions { display: flex; flex-wrap: wrap; gap: var(--sp-16); }
.cookie-title { font-weight: 600; color: var(--clr-white); margin-bottom: var(--sp-4); }

/* Cookie Preferences Modal */
.cookie-modal { position: fixed; inset: 0; background: rgba(9, 14, 15, 0.9); z-index: 1000; display: none; align-items: center; justify-content: center; padding: var(--sp-24); }
.cookie-modal.is-visible { display: flex; }
.cookie-modal-content { width: 100%; max-width: 600px; background: var(--clr-urban); border: 1px solid var(--clr-frosted); padding: var(--sp-40); max-height: 90vh; overflow-y: auto; }
.cookie-modal-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--sp-24); border-bottom: 1px solid var(--clr-graphite); padding-bottom: var(--sp-16); }
.cookie-modal-close { font-size: 1.5rem; color: var(--clr-text-muted); }
.cookie-modal-close:hover { color: var(--clr-white); }
.preference-row { display: flex; justify-content: space-between; align-items: flex-start; padding: var(--sp-16) 0; border-bottom: 1px solid var(--clr-graphite); gap: var(--sp-16); }
.toggle-switch { position: relative; width: 44px; height: 24px; }
.toggle-switch input { opacity: 0; width: 0; height: 0; }
.toggle-slider { position: absolute; cursor: pointer; inset: 0; background-color: var(--clr-slate); transition: .4s; border-radius: 24px; }
.toggle-slider:before { position: absolute; content: ""; height: 18px; width: 18px; left: 3px; bottom: 3px; background-color: var(--clr-white); transition: .4s; border-radius: 50%; }
input:checked + .toggle-slider { background-color: var(--clr-teal); }
input:focus + .toggle-slider { box-shadow: 0 0 1px var(--clr-teal); }
input:checked + .toggle-slider:before { transform: translateX(20px); }
input:disabled + .toggle-slider { background-color: var(--clr-mineral); cursor: not-allowed; }

/* Footer */
.site-footer { background: var(--clr-urban); border-top: 1px solid var(--clr-graphite); padding: var(--sp-64) 0 var(--sp-24); margin-top: auto; }
.footer-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-40); margin-bottom: var(--sp-64); }
.footer-col h4 { font-size: 0.875rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--clr-brass); margin-bottom: var(--sp-16); }
.footer-col ul { display: flex; flex-direction: column; gap: var(--sp-8); }
.footer-col a { font-size: 0.875rem; color: var(--clr-text-secondary); }
.footer-col a:hover { color: var(--clr-white); }
.footer-bottom { border-top: 1px solid var(--clr-graphite); padding-top: var(--sp-24); display: flex; flex-direction: column; gap: var(--sp-16); text-align: center; font-size: 0.75rem; color: var(--clr-text-muted); }
.footer-domain { display: inline-flex; align-items: center; gap: var(--sp-8); padding: var(--sp-8); font-weight: 600; color: var(--clr-blue); letter-spacing: 0.02em; font-size: 0.875rem; }
.footer-domain:hover { color: var(--clr-white); }
.footer-domain:hover span { text-decoration: underline; }
.footer-domain .brand-mark { width: 18px; height: 18px; fill: currentColor; }

/* Legal Layout */
.legal-content { max-width: 800px; margin: 0 auto; }
.legal-content h2 { margin-top: var(--sp-40); font-size: 1.25rem; }

/* Media Queries */
@media (min-width: 768px) {
  .nav-desktop { display: block; }
  .nav-toggle { display: none; }
  
  .hero { flex-direction: row; align-items: center; gap: var(--sp-40); padding: calc(var(--sp-64) * 1.5) 0; }
  .hero-content { flex: 1; padding-right: var(--sp-40); }
  .hero-visual { flex: 1; aspect-ratio: 1/1; }
  
  .split-card { flex-direction: row; align-items: center; gap: var(--sp-40); margin-bottom: var(--sp-64); }
  .split-card-img { flex: 1; aspect-ratio: 4/3; }
  .split-card-content { flex: 1; }
  /* Alternate Card Direction */
  .split-card:nth-child(even) { flex-direction: row-reverse; }
  
  .sequence-grid { grid-template-columns: repeat(3, 1fr); }
  .article-grid { grid-template-columns: 2fr 1fr; align-items: start; }
  
  .footer-grid { grid-template-columns: repeat(4, 1fr); }
  .footer-bottom { flex-direction: row; justify-content: space-between; text-align: left; align-items: center; }
  
  .cookie-content { flex-direction: row; justify-content: space-between; align-items: center; }
}

@media (min-width: 1024px) {
  .hero-visual { aspect-ratio: 4/3; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}