:root {
  --brand-green: #22AF54;
  --brand-red: #EA3337;
  --brand-blue: #2AB0E6;
  --brand-orange: #F68632;
  --brand-yellow: #F5D021;
  --color-bg: #FAF8F5;
  --color-surface-1: #FFFFFF;
  --color-surface-2: #F5F2EC;
  --color-border: #E6DFD5;
  --color-text: #1C1A17;
  --color-text-muted: #6E695F;
  --color-gold: #059669;
  --color-gold-soft: #10B981;
  --color-vermilion: #A83C28;
  --color-orange-red: #C95B2A;
  --color-violet: #6345C4;
  --color-danger: #C64B49;
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --font: "Be Vietnam Pro", "Segoe UI", "Helvetica Neue", sans-serif;
  --serif: "Source Serif 4", "Palatino Linotype", Georgia, serif;
}

@font-face {
  font-family: 'Be Vietnam Pro';
  src: url('/assets/fonts/BeVietnamPro-Variable.ttf') format('truetype');
  font-weight: 100 900;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Source Serif 4';
  src: url('/assets/fonts/SourceSerif4-Variable.woff2') format('woff2-variations');
  font-weight: 200 900;
  font-style: normal;
  font-display: swap;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--color-text);
  background:
    radial-gradient(1000px 600px at 0% 0%, rgba(201, 91, 42, 0.04), transparent 60%),
    radial-gradient(800px 500px at 100% 100%, rgba(99, 69, 196, 0.03), transparent 50%),
    var(--color-bg);
  line-height: 1.55;
  overflow-x: hidden;
}
a { color: var(--color-gold); text-decoration-thickness: 1px; text-underline-offset: 3px; transition: color 0.2s ease; }
a:hover { color: var(--color-gold-soft); }
img { max-width: 100%; height: auto; }
.shell { width: min(1120px, calc(100% - 2rem)); margin-inline: auto; }
.shell.narrow { width: min(760px, calc(100% - 2rem)); }

.degraded-banner {
  background: #fdf5e6;
  color: var(--color-vermilion);
  text-align: center;
  padding: .45rem 1rem;
  font-size: .9rem;
  border-bottom: 1px solid var(--color-border);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(12px);
  background: rgba(250, 248, 245, 0.85);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 4.25rem;
}
.brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  color: var(--color-text);
  text-decoration: none;
}
.brand-mark {
  width: 2.2rem;
  height: auto;
  display: block;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: 1.05rem; letter-spacing: .01em; color: var(--color-text); }
.brand-text span { font-size: .72rem; color: var(--color-text-muted); }

.site-nav { display: flex; align-items: center; gap: 1.1rem; }
.site-nav > a, .nav-dd > a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: .95rem;
  transition: color 0.2s ease;
}
.site-nav a.is-active, .site-nav a:hover, .nav-dd:hover > a { color: var(--color-text); }
.nav-cta {
  padding: .45rem .9rem;
  border: 1px solid var(--color-gold);
  background: var(--color-gold);
  color: #fff !important;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, border-color 0.2s ease;
}
.nav-cta:hover {
  background: var(--color-gold-soft);
  border-color: var(--color-gold-soft);
}
.nav-dd { position: relative; }
.nav-dd-panel {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 240px;
  padding: .5rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 10px 30px rgba(28,26,23,0.08);
}
.nav-dd:hover .nav-dd-panel, .nav-dd:focus-within .nav-dd-panel { display: grid; gap: .2rem; }
.nav-dd-panel a {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: .45rem .55rem;
  border-radius: var(--radius-sm);
  transition: background 0.2s ease, color 0.2s ease;
}
.nav-dd-panel a:hover {
  background: var(--color-surface-2);
  color: var(--color-text);
}
.nav-toggle {
  display: none;
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
  padding: .4rem .7rem;
  border-radius: var(--radius-sm);
}

/* Hero Slider */
.hero-slider {
  position: relative;
  min-height: min(92vh, 780px);
  overflow: hidden;
  color: var(--color-text);
  background: var(--color-bg);
}
.hero-slide {
  position: absolute;
  inset: 0;
  display: grid;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.8s ease, visibility 0.8s;
  z-index: 1;
}
.hero-slide.is-active {
  opacity: 1;
  visibility: visible;
  z-index: 2;
}
.slide-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.slide-bg-auto {
  background: radial-gradient(circle at 70% 50%, rgba(201, 91, 42, 0.08), transparent 55%), linear-gradient(135deg, #FAF8F5, #F5F2EC);
}
.slide-bg-seo {
  background: radial-gradient(circle at 30% 60%, rgba(99, 69, 196, 0.06), transparent 50%), linear-gradient(225deg, #FAF8F5, #F5F2EC);
}
.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}
.hero-copy {
  position: relative;
  z-index: 2;
  padding: 5rem 0 8rem;
  transform: translateY(20px);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}
.hero-slide.is-active .hero-copy {
  transform: translateY(0);
}
.brand-hero {
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  font-weight: 800;
  margin: 0 0 .8rem;
  letter-spacing: .05em;
  color: var(--color-gold);
  text-transform: uppercase;
}
.hero-slider h1, .hero-slider h2 {
  margin: 0 0 1rem;
  max-width: 18ch;
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
  letter-spacing: -0.02em;
}
.hero-lead {
  max-width: 44ch;
  color: var(--color-text-muted);
  margin: 0 0 2rem;
  font-size: 1.15rem;
  line-height: 1.6;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: .7rem; }

/* Slider Controls */
.slider-controls {
  position: absolute;
  bottom: 2.5rem;
  left: 0;
  right: 0;
  z-index: 10;
  display: flex;
  gap: 1rem;
}
.slider-progress {
  flex: 1;
  max-width: 180px;
  height: 4px;
  background: rgba(28, 26, 23, 0.1);
  border-radius: 2px;
  position: relative;
  overflow: visible;
  cursor: pointer;
  border: none;
  padding: 0;
}
.slider-progress::after {
  content: '';
  position: absolute;
  inset: -10px; /* increase hit area */
}
.progress-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  background: var(--color-gold);
  border-radius: 2px;
  transition: width 0.1s linear;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .75rem 1.35rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  transition: transform .2s ease, background .2s ease, border-color .2s ease, color 0.2s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--color-gold); color: #fff !important; }
.btn-primary:hover { background: var(--color-gold-soft); }
.btn-ghost { border-color: var(--color-border); color: var(--color-text); background: transparent; }
.btn-ghost:hover { border-color: var(--color-text); background: rgba(0, 0, 0, 0.02); }

.section { padding: 5.5rem 0; }
.section h2, .section h1 { letter-spacing: -.01em; color: var(--color-text); font-weight: 700; margin: 0 0 1rem 0; }
.section-lead { color: var(--color-text-muted); margin-top: -.4rem; font-size: 1.05rem; margin-bottom: 2rem; }
.intro-band .narrow { text-align: center; }
.intro-band p { font-size: 1.2rem; color: var(--color-text); }

/* Trust Rail */
.trust-rail {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.75rem 2rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
}
.trust-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.trust-item strong {
  font-size: 1.15rem;
  color: var(--color-gold);
}
.trust-item span {
  font-size: 0.95rem;
  color: var(--color-text-muted);
}

/* Capability Pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.pillar-card {
  padding: 2rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  position: relative;
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease, box-shadow 0.3s ease;
}
.pillar-card:hover {
  transform: translateY(-4px) translateZ(0);
  border-color: var(--color-gold);
  background: var(--color-surface-1);
  box-shadow: 0 10px 30px rgba(28, 26, 23, 0.06);
}
.pillar-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: rgba(194, 149, 60, 0.08);
  position: absolute;
  top: 1rem;
  right: 1.5rem;
}
.pillar-card h3 {
  margin: 0 0 1rem;
  font-size: 1.35rem;
  color: var(--color-text);
}
.pillar-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0 0 1.5rem;
}

/* Bento Grid Services */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: minmax(180px, auto);
  gap: 1.5rem;
  margin-top: 2rem;
}
.bento-item {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.75rem 1.5rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: inherit;
  text-decoration: none;
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
  overflow: hidden;
  position: relative;
}
.bento-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: var(--color-gold);
  opacity: 0;
  transition: opacity 0.3s ease;
}
.bento-item:hover { 
  transform: translateY(-4px); 
  border-color: var(--color-gold);
  box-shadow: 0 12px 30px rgba(28, 26, 23, 0.08); 
}
.bento-item:hover::before { opacity: 1; }
.bento-item.bento-primary { background: var(--color-surface-2); }
.bento-item.span-2 { grid-column: span 2; }
.bento-item.span-row-2 { grid-row: span 2; }
.bento-item.span-1 { grid-column: span 1; }

.bento-item h3 { margin: 0 0 .5rem; font-size: 1.35rem; color: var(--color-text); }
.bento-item p { margin: 0 0 1.25rem 0; color: var(--color-text-muted); font-size: .95rem; }

/* AI x Website System Diagram */
.system-diagram-container {
  margin-top: 2.5rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 2.5rem 1.5rem;
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
}
.system-diagram-desktop {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}
.diagram-node {
  flex: 1;
  padding: 1.25rem 1rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transition: border-color 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
}
.diagram-node:hover {
  border-color: var(--color-gold);
  transform: scale(1.02);
}
.diagram-node.active {
  border-color: var(--color-gold);
  background: rgba(194, 149, 60, 0.06);
  box-shadow: 0 0 20px rgba(194, 149, 60, 0.08);
}
.diagram-node strong {
  color: var(--color-text);
  font-size: 0.95rem;
}
.diagram-node span {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}
.diagram-arrow {
  color: var(--color-gold);
  font-size: 1.5rem;
  font-weight: bold;
}
.system-diagram-mobile {
  display: none;
}

/* Automation Flow Timeline */
.flow-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}
.flow-step {
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  text-align: center;
  position: relative;
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
}
.step-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  border: 2px solid var(--color-gold);
  color: var(--color-gold);
  font-weight: 700;
  margin-bottom: 1rem;
}
.flow-step h4 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  color: var(--color-text);
}
.flow-step p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* Evidence Matrix */
.evidence-matrix {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}
.evidence-card {
  padding: 1.75rem;
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
}
.evidence-card h4 {
  margin: 0 0 0.75rem;
  font-size: 1.15rem;
  color: var(--color-text);
}
.evidence-card p {
  margin: 0;
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* Delivery Timeline */
.delivery-timeline {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}
.delivery-step {
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
}
.step-header {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.delivery-step p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

.news-list { display: grid; gap: 1rem; margin: 1.5rem 0; }
.news-list article a {
  display: block;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
  color: inherit;
  text-decoration: none;
  transition: border-color 0.2s ease;
}
.news-list article a:hover {
  border-color: var(--color-text-muted);
}
.news-list h2, .news-list h3 { margin: 0 0 .35rem; font-size: 1.15rem; color: var(--color-text); }
.news-list time { color: var(--color-text-muted); font-size: .85rem; }
.text-link { font-weight: 600; color: var(--color-gold); }
.text-link:hover { color: var(--color-gold-soft); }

/* FAQ Accordion */
.faq-accordion {
  display: grid;
  gap: 0.75rem;
  margin-top: 2rem;
}
.faq-accordion details {
  background: var(--color-surface-1);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0;
  box-shadow: 0 4px 20px rgba(28, 26, 23, 0.03);
}
.faq-accordion summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  color: var(--color-text);
  outline: none;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-accordion summary::-webkit-details-marker {
  display: none;
}
.faq-accordion summary::after {
  content: '+';
  font-size: 1.25rem;
  color: var(--color-gold);
  transition: transform 0.25s ease;
}
.faq-accordion details[open] summary::after {
  content: '-';
}
.faq-content {
  padding: 0 1.5rem 1.5rem;
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

.cta-band {
  background: linear-gradient(135deg, var(--color-surface-1), var(--color-surface-2));
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}
.cta-inner { text-align: center; }
.cta-band h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); color: var(--color-text); }
.cta-band p { color: var(--color-text-muted); font-size: 1.05rem; margin-bottom: 2rem; }

.site-footer {
  background: var(--color-surface-2);
  color: var(--color-text-muted);
  padding: 4.5rem 0 2rem;
  border-top: 1px solid var(--color-border);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
}
.footer-brand { font-size: 1.35rem; font-weight: 700; color: var(--color-text); margin: 0 0 .5rem; }
.footer-label { color: var(--color-text); font-weight: 600; margin-bottom: 0.75rem; }
.footer-links { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.5rem; }
.footer-links a, .site-footer a { color: var(--color-text-muted); text-decoration: none; transition: color 0.2s ease; }
.footer-links a:hover, .site-footer a:hover { color: var(--color-text); }
.footer-bottom { margin-top: 3rem; padding-top: 1.5rem; border-top: 1px solid var(--color-border); font-size: .9rem; text-align: center; }

.prose .body-html { font-family: var(--serif); font-size: 1.1rem; color: var(--color-text); }
.prose .body-html h2, .prose .body-html h3 { font-family: var(--font); color: var(--color-text); margin-top: 2rem; }
.answer-lead {
  font-size: 1.15rem;
  color: var(--color-text);
  border-left: 3px solid var(--color-gold);
  padding-left: 1rem;
  background: var(--color-surface-1);
  padding-block: 0.75rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 3rem; }
.contact-form { display: grid; gap: 1rem; }
.contact-form label { display: grid; gap: .4rem; font-weight: 500; color: var(--color-text-muted); }
.contact-form input, .contact-form textarea {
  font: inherit;
  padding: .75rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface-1);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s ease;
}
.contact-form input:focus, .contact-form textarea:focus {
  outline: none;
  border-color: var(--color-gold);
}
.form-ok { color: var(--brand-green); font-weight: 600; }
.form-error { color: var(--color-danger); }
.pager { display: flex; gap: 1rem; align-items: center; margin-top: 2rem; }
.crumb { color: var(--color-text-muted); }

@media (max-width: 900px) {
  .hero-slider { min-height: 85vh; }
  .bento-grid, .footer-grid, .contact-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .bento-item.span-2 { grid-column: span 1; }
  .bento-item.span-row-2 { grid-row: span 1; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    position: absolute;
    inset: 4.25rem 0 auto 0;
    background: var(--color-surface-1);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: stretch;
    padding: 1.5rem;
    box-shadow: 0 10px 30px rgba(28,26,23,0.05);
  }
  .site-nav.is-open { display: flex; }
  .nav-dd-panel { position: static; display: grid; box-shadow: none; border: none; padding-left: 1rem; }
  
  /* Trust Rail */
  .trust-rail { flex-direction: column; gap: 1.25rem; padding: 1.25rem; }
  
  /* Capability Pillars */
  .pillars-grid { grid-template-columns: 1fr; gap: 1rem; }
  .pillar-card { padding: 1.5rem; }
  .pillar-num { top: 0.75rem; right: 1rem; font-size: 2rem; }

  /* AI Diagram Mobile */
  .system-diagram-desktop { display: none; }
  .system-diagram-mobile { display: flex; flex-direction: column; gap: 1rem; }
  .mobile-node {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1rem;
  }
  .mobile-node .step-num {
    background: var(--color-gold);
    color: #fff;
    font-weight: bold;
    width: 1.75rem;
    height: 1.75rem;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
  }
  .mobile-node div { display: flex; flex-direction: column; gap: 0.25rem; }
  .mobile-node strong { color: var(--color-text); font-size: 0.95rem; }
  .mobile-node p { margin: 0; color: var(--color-text-muted); font-size: 0.85rem; line-height: 1.4; }

  /* Timelines and Matrix */
  .flow-timeline, .delivery-timeline, .evidence-matrix { grid-template-columns: 1fr; gap: 1rem; }
  .flow-step, .delivery-step, .evidence-card { padding: 1.25rem; }
  .step-icon { margin-bottom: 0.75rem; }
}