/* ═══════════════════════════════════════════════════════════════════════════
   Viscosity.AI Solution Architecture Fleet — Light Redwood Design System
   6 Earth-Tone Flavors:
   - redwood-clay   (Redwood Clay & Copper)
   - stone          (Redwood Stone & Warm Slate)
   - river          (Redwood River & Deep Ocean)
   - sandstone      (Redwood Sandstone & Ochre)
   - painted-desert (Painted Desert Terracotta & Canyon Rose)
   - sage-canyon    (Sage Canyon & Mineral Juniper)
   ═══════════════════════════════════════════════════════════════════════════ */

:root,
[data-flavor="redwood-clay"] {
  --bg:            #FBF9F6;
  --bg-elevated:   #F4EFE8;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F6F2EB;
  --ink:           #211C16;
  --ink-2:         #4A4239;
  --ink-mute:      #6E655A;
  --rule:          #E3DCD2;
  --rule-strong:   #C8BEB0;
  --accent:        #C74634;
  --accent-strong: #9E3324;
  --accent-soft:   rgba(199, 70, 52, 0.08);
  --secondary:     #B87333;
  --secondary-soft:rgba(184, 115, 51, 0.10);
  --amber:         #B45309;
  --emerald:       #2E6F4E;
  --error:         #B91C1C;
  --top-banner-bg: #2A231B;
  --top-banner-fg: #F5F0E8;
  --strata-grad:   linear-gradient(90deg, #C74634 0%, #C08050 45%, #7A9B8A 80%, #D4AF37 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(199, 70, 52, 0.09), rgba(192, 128, 80, 0.04) 48%, transparent 72%);
  --radius:        6px;
  --font-serif:    Georgia, 'Times New Roman', Times, serif;
  --font-sans:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono:     'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Flavor 2: Redwood Stone (Limestone, Warm Dolomite & Iron Oxide) */
[data-flavor="stone"] {
  --bg:            #F8F7F4;
  --bg-elevated:   #EFECE6;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F2EFE9;
  --ink:           #262421;
  --ink-2:         #4E4A44;
  --ink-mute:      #6E6961;
  --rule:          #DFDBD3;
  --rule-strong:   #C5BFB4;
  --accent:        #8C4A32;
  --accent-strong: #6E3723;
  --accent-soft:   rgba(140, 74, 50, 0.08);
  --secondary:     #5A6B73;
  --secondary-soft:rgba(90, 107, 115, 0.10);
  --amber:         #9A6B26;
  --emerald:       #3B6E5C;
  --top-banner-bg: #2B2927;
  --top-banner-fg: #F4F2EE;
  --strata-grad:   linear-gradient(90deg, #8C4A32 0%, #5A6B73 48%, #9A6B26 82%, #C74634 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(140, 74, 50, 0.08), rgba(90, 107, 115, 0.05) 50%, transparent 72%);
}

/* Flavor 3: Redwood River (Deep Ocean Teal, Riverbed Silt & Redwood Clay) */
[data-flavor="river"] {
  --bg:            #F7F9F9;
  --bg-elevated:   #EBF1F2;
  --bg-card:       #FFFFFF;
  --bg-alt:        #EFF4F5;
  --ink:           #1B262B;
  --ink-2:         #3E4E56;
  --ink-mute:      #60717A;
  --rule:          #D7E1E4;
  --rule-strong:   #B8C8CD;
  --accent:        #006884;
  --accent-strong: #004E63;
  --accent-soft:   rgba(0, 104, 132, 0.08);
  --secondary:     #C74634;
  --secondary-soft:rgba(199, 70, 52, 0.09);
  --amber:         #B86B19;
  --emerald:       #246A56;
  --top-banner-bg: #182830;
  --top-banner-fg: #EFF5F6;
  --strata-grad:   linear-gradient(90deg, #006884 0%, #3B828E 45%, #C74634 80%, #C5A065 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(0, 104, 132, 0.09), rgba(199, 70, 52, 0.04) 50%, transparent 72%);
}

/* Flavor 4: Redwood Sandstone (Navajo Sandstone, Warm Ochre & Burnt Sienna) */
[data-flavor="sandstone"] {
  --bg:            #FCF8F2;
  --bg-elevated:   #F5ECDF;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F8F1E5;
  --ink:           #281F16;
  --ink-2:         #524334;
  --ink-mute:      #756452;
  --rule:          #E6DAC8;
  --rule-strong:   #CDBA9F;
  --accent:        #B85C28;
  --accent-strong: #92451A;
  --accent-soft:   rgba(184, 92, 40, 0.09);
  --secondary:     #9A6B1F;
  --secondary-soft:rgba(154, 107, 31, 0.10);
  --amber:         #A6631B;
  --emerald:       #356B50;
  --top-banner-bg: #2D2218;
  --top-banner-fg: #FAF3E8;
  --strata-grad:   linear-gradient(90deg, #B85C28 0%, #D49A45 45%, #C74634 80%, #6B8E7A 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(184, 92, 40, 0.10), rgba(212, 154, 69, 0.06) 50%, transparent 72%);
}

/* Flavor 5: Painted Desert (Canyon Terracotta, Mesa Rose, Badlands Ochre & Turquoise) */
[data-flavor="painted-desert"] {
  --bg:            #FCF7F5;
  --bg-elevated:   #F6ECE8;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F9F0EC;
  --ink:           #291C1A;
  --ink-2:         #543F3B;
  --ink-mute:      #765E59;
  --rule:          #E7D6D0;
  --rule-strong:   #CFB7AF;
  --accent:        #B83B2A;
  --accent-strong: #8F2A1C;
  --accent-soft:   rgba(184, 59, 42, 0.08);
  --secondary:     #9C526B;
  --secondary-soft:rgba(156, 82, 107, 0.10);
  --amber:         #C27829;
  --emerald:       #1F6E6C;
  --top-banner-bg: #2D1D1A;
  --top-banner-fg: #FAF0ED;
  --strata-grad:   linear-gradient(90deg, #B83B2A 0%, #9C526B 38%, #D4893B 72%, #1F6E6C 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(184, 59, 42, 0.09), rgba(156, 82, 107, 0.06) 48%, transparent 72%);
}

/* Flavor 6: Sage Canyon (High-Desert Sage, Mineral Pine, Warm Limestone & Clay) */
[data-flavor="sage-canyon"] {
  --bg:            #F8FAF7;
  --bg-elevated:   #ECF1EA;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F1F5EF;
  --ink:           #1E2620;
  --ink-2:         #424F45;
  --ink-mute:      #637167;
  --rule:          #D9E2D8;
  --rule-strong:   #BCC9BA;
  --accent:        #3D6B58;
  --accent-strong: #2B5041;
  --accent-soft:   rgba(61, 107, 88, 0.09);
  --secondary:     #C74634;
  --secondary-soft:rgba(199, 70, 52, 0.09);
  --amber:         #AD6E24;
  --emerald:       #2B6A4C;
  --top-banner-bg: #1F2922;
  --top-banner-fg: #F2F6F1;
  --strata-grad:   linear-gradient(90deg, #3D6B58 0%, #7A9B8A 45%, #C74634 80%, #C08050 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(61, 107, 88, 0.09), rgba(199, 70, 52, 0.04) 50%, transparent 72%);
}

/* Flavor 7: Sedona Copper (Burnished Copper, Red Rock Sienna & Travertine Cream) */
[data-flavor="sedona-copper"] {
  --bg:            #FCF8F5;
  --bg-elevated:   #F5ECE4;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F8F0E9;
  --ink:           #261C17;
  --ink-2:         #523E34;
  --ink-mute:      #745C50;
  --rule:          #E5D7CB;
  --rule-strong:   #CBB7A6;
  --accent:        #AD5327;
  --accent-strong: #873E1B;
  --accent-soft:   rgba(173, 83, 39, 0.09);
  --secondary:     #C74634;
  --secondary-soft:rgba(199, 70, 52, 0.09);
  --amber:         #B86E1E;
  --emerald:       #2E6B56;
  --top-banner-bg: #2B1E18;
  --top-banner-fg: #FAF2EC;
  --strata-grad:   linear-gradient(90deg, #AD5327 0%, #C74634 45%, #D49A45 80%, #2E6B56 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(173, 83, 39, 0.10), rgba(199, 70, 52, 0.05) 50%, transparent 72%);
}

/* Flavor 8: Canyon Ochre (Golden Ochre, Warm Parchment & Canyon Iron) */
[data-flavor="canyon-ochre"] {
  --bg:            #FCF9F2;
  --bg-elevated:   #F4EDE0;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F8F2E6;
  --ink:           #262016;
  --ink-2:         #4F4332;
  --ink-mute:      #72634F;
  --rule:          #E4DAC6;
  --rule-strong:   #CABB9E;
  --accent:        #9E631B;
  --accent-strong: #7B4B11;
  --accent-soft:   rgba(158, 99, 27, 0.09);
  --secondary:     #B84A32;
  --secondary-soft:rgba(184, 74, 50, 0.09);
  --amber:         #A6631B;
  --emerald:       #336B4E;
  --top-banner-bg: #2A2217;
  --top-banner-fg: #FAF4E8;
  --strata-grad:   linear-gradient(90deg, #9E631B 0%, #C59B38 45%, #B84A32 80%, #336B4E 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(158, 99, 27, 0.10), rgba(184, 74, 50, 0.05) 50%, transparent 72%);
}

/* Flavor 9: Sierra Granite (Warm Feldspar Granite, Alpine Slate & Sequoia Bark) */
[data-flavor="sierra-granite"] {
  --bg:            #F8F8F6;
  --bg-elevated:   #EDEBE7;
  --bg-card:       #FFFFFF;
  --bg-alt:        #F2F0EC;
  --ink:           #222426;
  --ink-2:         #45494E;
  --ink-mute:      #666B70;
  --rule:          #DCDAD4;
  --rule-strong:   #C0BDB5;
  --accent:        #4A5D6E;
  --accent-strong: #354452;
  --accent-soft:   rgba(74, 93, 110, 0.09);
  --secondary:     #B54835;
  --secondary-soft:rgba(181, 72, 53, 0.09);
  --amber:         #A36824;
  --emerald:       #2E6A54;
  --top-banner-bg: #232629;
  --top-banner-fg: #F3F2EE;
  --strata-grad:   linear-gradient(90deg, #4A5D6E 0%, #B54835 48%, #8C6D46 82%, #2E6A54 100%);
  --hero-wash:     radial-gradient(circle at 82% 16%, rgba(74, 93, 110, 0.09), rgba(181, 72, 53, 0.05) 50%, transparent 72%);
}

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

html {
  scroll-behavior: smooth;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.65;
  color-scheme: light;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: var(--radius);
  z-index: 999;
  text-decoration: none;
}
.skip-link:focus {
  top: 12px;
}

.wrap {
  max-width: 1160px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top Architecture Bar + Redwood Strata Ribbon */
.top-banner {
  background: var(--top-banner-bg);
  border-bottom: 1px solid var(--rule-strong);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--top-banner-fg);
  padding: 8px 0;
  position: relative;
}
.top-banner::after {
  content: "";
  display: block;
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--strata-grad);
}
.top-banner-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
}
.top-banner strong {
  color: #F5D0A9;
}

/* Masthead */
.masthead {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 249, 246, 0.94);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
  padding: 14px 0;
}
.masthead-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}
.brand-mark {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}
.brand-text {
  display: flex;
  flex-direction: column;
}
.brand-word {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--ink-mute);
}
.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}
.nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color 0.15s ease;
}
.nav a:hover {
  color: var(--accent);
}
.nav a.nav-cta {
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: var(--radius);
}
.nav a.nav-cta:hover {
  background: var(--accent-strong);
  color: #FFFFFF;
}

/* Hero */
.hero {
  padding: 60px 0 54px;
  border-bottom: 1px solid var(--rule);
  background: var(--hero-wash);
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.35fr 0.95fr;
  gap: 40px;
  align-items: start;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--accent);
  padding: 4px 11px;
  border-radius: 4px;
  margin-bottom: 16px;
}
h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin-bottom: 18px;
}
.lead {
  font-size: 1.06rem;
  color: var(--ink-2);
  margin-bottom: 26px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  margin-bottom: 26px;
}
.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 16px;
  box-shadow: 0 1px 3px rgba(33, 28, 22, 0.05);
}
.metric-card dt {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  margin-bottom: 4px;
}
.metric-card dd {
  font-size: 1.14rem;
  font-weight: 800;
  color: var(--accent);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.search-intent-bar {
  margin-top: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--rule);
}
.search-intent-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-mute);
  margin-bottom: 10px;
}
.query-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
}
.query-chip {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  color: var(--ink-2);
  padding: 5px 10px;
  border-radius: 4px;
}
.query-chip::before {
  content: "\2315  ";
  font-weight: 700;
  color: var(--accent);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--accent);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.96rem;
  padding: 13px 22px;
  border-radius: var(--radius);
  border: none;
  text-decoration: none;
  cursor: pointer;
  min-height: 48px;
  box-shadow: 0 2px 6px rgba(33, 28, 22, 0.12);
  transition: background 0.15s ease, transform 0.1s ease;
}
.btn-primary:hover {
  background: var(--accent-strong);
  color: #FFFFFF;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 20px;
  border-radius: var(--radius);
  text-decoration: none;
  min-height: 48px;
}
.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* Stack X -> Stack Y Spec Box */
.spec-aside {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: 0 4px 16px rgba(33, 28, 22, 0.06);
}
.spec-stamp {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: block;
  margin-bottom: 8px;
}
.spec-aside h2 {
  font-family: var(--font-serif);
  font-size: 1.22rem;
  margin-bottom: 14px;
  color: var(--ink);
}
.stack-box {
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 12px 14px;
  margin-bottom: 12px;
}
.stack-box .stack-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--ink-mute);
  display: block;
  margin-bottom: 4px;
}
.stack-box.target {
  border-color: var(--accent);
  background: var(--accent-soft);
}
.stack-box.target .stack-label {
  color: var(--accent);
  font-weight: 700;
}
.stack-box strong {
  font-size: 0.94rem;
  color: var(--ink);
  display: block;
}
.brief-preview-meta {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--rule);
  font-size: 0.88rem;
  color: var(--ink-2);
}
.brief-preview-meta ul {
  list-style: none;
  margin-top: 8px;
}
.brief-preview-meta li {
  padding-left: 18px;
  position: relative;
  margin-bottom: 6px;
  font-size: 0.85rem;
}
.brief-preview-meta li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--emerald);
  font-weight: 700;
}

/* Sections */
.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--rule);
}
.section-alt {
  background: var(--bg-alt);
}
.section-head {
  max-width: 820px;
  margin-bottom: 36px;
}
.section-head h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 2.5vw, 2.05rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  color: var(--ink);
  border-bottom: 2px solid var(--accent);
  padding-bottom: 8px;
  display: inline-block;
}
.section-head p {
  color: var(--ink-2);
  font-size: 1.02rem;
}

.two-col-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 24px;
}
.arch-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 2px 8px rgba(33, 28, 22, 0.04);
}
.arch-card h3 {
  font-family: var(--font-serif);
  font-size: 1.16rem;
  margin-bottom: 14px;
  color: var(--accent);
}
.arch-list {
  list-style: none;
}
.arch-list li {
  margin-bottom: 14px;
  padding-left: 20px;
  position: relative;
  color: var(--ink-2);
  font-size: 0.95rem;
}
.arch-list li::before {
  content: "\25B8";
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* Proof Callout */
.proof-banner {
  margin-top: 28px;
  background: linear-gradient(90deg, var(--accent-soft), #FFFFFF 85%);
  border: 1px solid var(--rule-strong);
  border-left: 4px solid var(--emerald);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.proof-banner strong {
  color: var(--emerald);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  display: block;
  margin-bottom: 6px;
}
.proof-banner p {
  color: var(--ink);
  font-size: 0.98rem;
}

/* Conversion Matrix Table */
.table-controls {
  margin-bottom: 16px;
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}
.table-controls label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--ink-2);
}
.table-controls input[type="search"] {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  color: var(--ink);
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  min-width: 280px;
  flex: 1;
}
.table-wrapper {
  overflow-x: auto;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  background: var(--bg-card);
  box-shadow: 0 2px 8px rgba(33, 28, 22, 0.04);
}
.matrix-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.93rem;
}
.matrix-table caption {
  text-align: left;
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-mute);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--rule-strong);
}
.matrix-table th,
.matrix-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}
.matrix-table thead th {
  background: var(--bg-elevated);
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--rule-strong);
}
.matrix-table tbody tr:nth-child(even) {
  background: var(--bg);
}
.matrix-table tbody tr:hover {
  background: var(--accent-soft);
}
.matrix-table tbody th {
  color: var(--ink);
  font-weight: 600;
}
.badge-method {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--accent-soft);
  border: 1px solid var(--rule-strong);
  color: var(--accent-strong);
  font-weight: 600;
  padding: 3px 8px;
  border-radius: 4px;
}

/* Tooling Chips & Cards */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.tool-item {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 0.94rem;
  color: var(--ink);
  box-shadow: 0 1px 4px rgba(33, 28, 22, 0.04);
}

/* FAQ Accordion / Details */
.faq-list {
  display: grid;
  gap: 14px;
  max-width: 880px;
}
details.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius);
  padding: 18px 22px;
}
details.faq-item summary {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.04rem;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
details.faq-item summary::after {
  content: "+";
  color: var(--accent);
  font-family: var(--font-mono);
  font-size: 1.2rem;
}
details.faq-item[open] summary::after {
  content: "\2212";
}
details.faq-item p {
  margin-top: 12px;
  color: var(--ink-2);
  font-size: 0.95rem;
}

/* Blog / Deep-Dive Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.article-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 2px 8px rgba(33, 28, 22, 0.05);
}
.article-card .kicker {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
}
.article-card h3 {
  font-family: var(--font-serif);
  font-size: 1.14rem;
  margin-bottom: 10px;
}
.article-card h3 a {
  color: var(--ink);
  text-decoration: none;
}
.article-card h3 a:hover {
  color: var(--accent);
}
.article-card p {
  color: var(--ink-2);
  font-size: 0.92rem;
  margin-bottom: 16px;
}
.article-card .read-link {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 700;
}

/* Intake Form Section (Request Solution Brief PDF) */
.intake-section {
  background: linear-gradient(180deg, var(--bg-alt) 0%, var(--bg-elevated) 100%);
}
.intake-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
  align-items: start;
}
.brief-card-preview {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 24px;
  margin-top: 22px;
}
.brief-card-preview h3 {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  color: var(--accent);
  margin-bottom: 8px;
}
.brief-form {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 30px;
  box-shadow: 0 6px 20px rgba(33, 28, 22, 0.07);
}
.brief-form h3 {
  font-family: var(--font-serif);
  font-size: 1.28rem;
  margin-bottom: 6px;
  color: var(--ink);
}
.brief-form .form-sub {
  font-size: 0.9rem;
  color: var(--ink-mute);
  margin-bottom: 20px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}
.field {
  margin-bottom: 16px;
}
.field label {
  display: block;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 6px;
}
.field .hint {
  display: block;
  font-size: 0.78rem;
  color: var(--ink-mute);
  margin-bottom: 6px;
}
.field input,
.field select,
.field textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.96rem;
  padding: 11px 13px;
  min-height: 46px;
}
.field textarea {
  min-height: 96px;
  resize: vertical;
}
.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}
.field input:user-invalid,
.field textarea:user-invalid {
  border-color: var(--error);
}

.brief-delivery-box {
  margin-top: 18px;
  border-radius: var(--radius);
  font-size: 0.92rem;
}
.brief-delivery-box.success {
  background: rgba(46, 111, 78, 0.08);
  border: 1px solid var(--emerald);
  padding: 18px;
  color: var(--ink);
}
.brief-delivery-box.success strong {
  display: block;
  color: var(--emerald);
  margin-bottom: 6px;
}
.brief-delivery-box.success p {
  font-size: 0.88rem;
  color: var(--ink-2);
  margin-bottom: 12px;
}
.brief-download-btn {
  display: inline-block;
  background: var(--emerald);
  color: #FFFFFF;
  font-weight: 700;
  padding: 10px 16px;
  border-radius: 4px;
  text-decoration: none;
  font-size: 0.9rem;
}
.brief-delivery-box.error {
  background: rgba(185, 28, 28, 0.08);
  border: 1px solid var(--error);
  padding: 12px 16px;
  color: var(--error);
}

/* Related Stack-to-Stack Solutions Nav */
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 14px;
}
.related-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 16px;
  text-decoration: none;
  display: block;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.related-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.related-card span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}
.related-card strong {
  color: var(--ink);
  font-size: 0.92rem;
}

/* Footer */
.footer {
  margin-top: auto;
  background: var(--bg-elevated);
  border-top: 2px solid var(--rule-strong);
  padding: 48px 0 36px;
  color: var(--ink-2);
  font-size: 0.88rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 32px;
}
.foot-h {
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
  font-size: 0.98rem;
}
.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 10px;
}
.legal-links button {
  background: none;
  border: none;
  color: var(--accent);
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}
.footer-base {
  padding-top: 24px;
  border-top: 1px solid var(--rule-strong);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.84rem;
}
.footer-base strong {
  color: var(--ink);
}

/* Native Modal Dialogs */
dialog.legal-dialog {
  max-width: 580px;
  width: calc(100% - 32px);
  margin: auto;
  background: var(--bg-card);
  color: var(--ink);
  border: 1px solid var(--rule-strong);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 12px 36px rgba(33, 28, 22, 0.18);
}
dialog.legal-dialog::backdrop {
  background: rgba(33, 28, 22, 0.45);
}
dialog.legal-dialog h3 {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  margin-bottom: 12px;
  color: var(--accent);
}
dialog.legal-dialog p {
  font-size: 0.9rem;
  color: var(--ink-2);
  margin-bottom: 12px;
}
dialog.legal-dialog button {
  margin-top: 10px;
  background: var(--accent);
  color: #FFFFFF;
  border: none;
  font-weight: 700;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
}

/* Interactive Redwood Palette Swatcher & Architecture Sizer */
.flavor-switcher {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}
.flavor-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.7);
  cursor: pointer;
  padding: 0;
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.flavor-dot:hover,
.flavor-dot[aria-pressed="true"] {
  transform: scale(1.25);
  border-color: #FFFFFF;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--rule-strong);
  border-top: 4px solid var(--accent);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: 0 4px 18px rgba(33, 28, 22, 0.06);
}
.calc-grid {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  gap: 32px;
  align-items: center;
}
.calc-control {
  margin-bottom: 18px;
}
.calc-control-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 6px;
}
.calc-control-head label {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--ink);
}
.calc-val-badge {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid var(--rule-strong);
  padding: 2px 8px;
  border-radius: 4px;
}
.calc-control input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
  cursor: pointer;
}
.calc-control select {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--rule-strong);
  border-radius: 4px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  padding: 10px 12px;
}
.calc-outputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
.calc-out-box {
  background: var(--bg-elevated);
  border: 1px solid var(--rule-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius);
  padding: 14px 16px;
}
.calc-out-box.highlight {
  background: var(--accent-soft);
  border-color: var(--accent);
  border-left-width: 4px;
}
.calc-out-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-mute);
  display: block;
  margin-bottom: 4px;
}
.calc-out-val {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--ink);
}
.calc-out-box.highlight .calc-out-val {
  color: var(--accent);
}
.calc-actions {
  grid-column: 1 / -1;
  margin-top: 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
}

@media (max-width: 860px) {
  .hero-grid,
  .intake-grid,
  .footer-grid,
  .calc-grid,
  .calc-outputs {
    grid-template-columns: 1fr;
  }
  .form-row {
    grid-template-columns: 1fr;
  }
}