/* ─── ROOT TOKENS ─── */
:root, [data-theme="light"] {
  --color-bg:             #f7f6f2;
  --color-surface:        #f0ede8;
  --color-surface-2:      #e8e4de;
  --color-surface-offset: #e2ded7;
  --color-border:         #d0ccc4;
  --color-divider:        #dbd7d0;
  --color-text:           #1a1916;
  --color-text-muted:     #6b6a65;
  --color-text-faint:     #a8a7a2;
  --color-text-inverse:   #f7f6f2;
  --color-primary:        #0d4f6b;
  --color-primary-hover:  #0a3d54;
  --color-primary-active: #072e3e;
  --color-primary-light:  #e0edf5;
  --color-accent:         #00b4d8;
  --color-accent-warm:    #f77f00;
  --color-success:        #2d6a4f;
  --color-success-light:  #d8f3dc;
  --color-warning:        #e76f51;
  --color-warning-light:  #fde8e4;
  --color-orange:         #e67e22;
  --color-blue:           #2980b9;
  --color-purple:         #8e44ad;
  --color-gold:           #d4a017;
  --color-teal:           #0d7377;
  --color-red:            #c0392b;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.07);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.10);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.14);
  --radius-sm: 0.375rem;
  --radius-md: 0.625rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  --transition: 180ms cubic-bezier(0.16,1,0.3,1);
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', 'Helvetica Neue', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --text-xs:   clamp(0.75rem, 0.7rem + 0.25vw, 0.8125rem);
  --text-sm:   clamp(0.875rem, 0.82rem + 0.3vw, 0.9375rem);
  --text-base: clamp(1rem, 0.95rem + 0.2vw, 1.0625rem);
  --text-lg:   clamp(1.125rem, 1rem + 0.6vw, 1.375rem);
  --text-xl:   clamp(1.375rem, 1.1rem + 1.1vw, 1.875rem);
  --text-2xl:  clamp(1.875rem, 1.2rem + 2.5vw, 3rem);
  --text-3xl:  clamp(2.5rem, 1.4rem + 4vw, 4.5rem);
  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem;
  --space-4: 1rem; --space-5: 1.25rem; --space-6: 1.5rem;
  --space-8: 2rem; --space-10: 2.5rem; --space-12: 3rem;
  --space-16: 4rem; --space-20: 5rem; --space-24: 6rem;
  --content-narrow: 680px;
  --content-default: 1000px;
  --content-wide: 1240px;
}

[data-theme="dark"] {
  --color-bg:             #0e0f11;
  --color-surface:        #141619;
  --color-surface-2:      #1a1d21;
  --color-surface-offset: #1e2125;
  --color-border:         #2c3038;
  --color-divider:        #252a30;
  --color-text:           #e2e4e8;
  --color-text-muted:     #7a8090;
  --color-text-faint:     #454c57;
  --color-text-inverse:   #0e0f11;
  --color-primary:        #38bdf8;
  --color-primary-hover:  #7dd3fc;
  --color-primary-active: #bae6fd;
  --color-primary-light:  #0c2231;
  --color-accent:         #22d3ee;
  --color-accent-warm:    #fb923c;
  --color-success:        #4ade80;
  --color-success-light:  #052e16;
  --color-warning:        #fb7185;
  --color-warning-light:  #1c0a0a;
  --color-orange:         #fb923c;
  --color-blue:           #60a5fa;
  --color-purple:         #c084fc;
  --color-gold:           #fbbf24;
  --color-teal:           #2dd4bf;
  --color-red:            #f87171;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 14px rgba(0,0,0,0.4);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg:             #0e0f11;
    --color-surface:        #141619;
    --color-surface-2:      #1a1d21;
    --color-surface-offset: #1e2125;
    --color-border:         #2c3038;
    --color-divider:        #252a30;
    --color-text:           #e2e4e8;
    --color-text-muted:     #7a8090;
    --color-text-faint:     #454c57;
    --color-text-inverse:   #0e0f11;
    --color-primary:        #38bdf8;
    --color-primary-hover:  #7dd3fc;
    --color-primary-active: #bae6fd;
    --color-primary-light:  #0c2231;
    --color-accent:         #22d3ee;
    --color-accent-warm:    #fb923c;
    --color-success:        #4ade80;
    --color-success-light:  #052e16;
    --color-warning:        #fb7185;
    --color-warning-light:  #1c0a0a;
    --color-orange:         #fb923c;
    --color-blue:           #60a5fa;
    --color-purple:         #c084fc;
    --color-gold:           #fbbf24;
    --color-teal:           #2dd4bf;
    --color-red:            #f87171;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 14px rgba(0,0,0,0.4);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.6);
  }
}

/* ─── BASE ─── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.65;
  overflow-x: hidden;
}
img, svg { display: block; max-width: 100%; }
h1,h2,h3,h4 { text-wrap: balance; line-height: 1.2; }
p, li { text-wrap: pretty; }
button { cursor: pointer; font: inherit; border: none; background: none; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
input, select, textarea { font: inherit; color: inherit; background: transparent; }
table { border-collapse: collapse; width: 100%; }
code { font-family: var(--font-mono); font-size: 0.875em; background: var(--color-surface); padding: 0.1em 0.35em; border-radius: var(--radius-sm); border: 1px solid var(--color-border); }

/* ─── NAV ─── */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: color-mix(in oklch, var(--color-bg) 90%, transparent);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}
.nav.scrolled { box-shadow: var(--shadow-md); }
.nav-inner {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding: var(--space-3) var(--space-6);
  display: flex; align-items: center; gap: var(--space-6);
}
.logo { display: flex; align-items: center; gap: var(--space-3); text-decoration: none; }
.logo-text { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-text); white-space: nowrap; }
.nav-links { display: flex; align-items: center; gap: var(--space-6); margin-left: auto; }
.nav-links a { font-size: var(--text-sm); font-weight: 500; color: var(--color-text-muted); transition: color var(--transition); }
.nav-links a:hover { color: var(--color-text); text-decoration: none; }
.theme-toggle {
  width: 36px; height: 36px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  color: var(--color-text-muted); border: 1px solid var(--color-border);
  transition: color var(--transition), background var(--transition);
  flex-shrink: 0;
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface); }

/* ─── LAYOUT ─── */
.container {
  max-width: var(--content-wide);
  margin: 0 auto;
  padding-inline: var(--space-6);
}
.section { padding-block: clamp(var(--space-16), 8vw, var(--space-24)); }
.section-alt { background: var(--color-surface); }
.section-label {
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.section-heading {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  max-width: 16ch;
}
.section-intro {
  font-size: var(--text-lg); color: var(--color-text-muted);
  max-width: 60ch; margin-bottom: var(--space-12);
}
.subsection-heading {
  font-family: var(--font-display);
  font-size: var(--text-xl); color: var(--color-text);
  margin-bottom: var(--space-8);
}

/* ─── BUTTONS ─── */
.btn {
  display: inline-flex; align-items: center; gap: var(--space-2);
  padding: var(--space-3) var(--space-6); border-radius: var(--radius-full);
  font-size: var(--text-sm); font-weight: 600; cursor: pointer;
  transition: all var(--transition); white-space: nowrap; text-decoration: none;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--color-primary); color: var(--color-text-inverse);
}
.btn-primary:hover { opacity: 0.88; text-decoration: none; }
.btn-ghost {
  background: transparent; color: var(--color-text);
  border-color: var(--color-border);
}
.btn-ghost:hover { background: var(--color-surface); text-decoration: none; }

/* ─── HERO ─── */
.hero {
  position: relative; min-height: 100dvh;
  display: flex; align-items: center;
  padding-top: 80px; overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0;
  pointer-events: none;
}
.hero-orb {
  position: absolute; border-radius: 50%;
  filter: blur(80px); opacity: 0.18;
}
.hero-orb-1 {
  width: 600px; height: 600px;
  background: var(--color-primary);
  top: -100px; right: -100px;
}
.hero-orb-2 {
  width: 400px; height: 400px;
  background: var(--color-accent);
  bottom: 0; left: -80px;
}
.hero-grid {
  position: absolute; inset: 0;
  background-image: linear-gradient(var(--color-border) 1px, transparent 1px),
                    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.25;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 50%, black 0%, transparent 100%);
}
.hero-content {
  position: relative; z-index: 1;
  padding-block: var(--space-20);
}
.hero-badge {
  display: inline-flex; align-items: center; gap: var(--space-2);
  background: var(--color-primary-light); color: var(--color-primary);
  border: 1px solid color-mix(in oklch, var(--color-primary) 30%, transparent);
  border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase;
  padding: var(--space-2) var(--space-4);
  margin-bottom: var(--space-6);
}
.hero-heading {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  line-height: 1.08;
  margin-bottom: var(--space-6);
  max-width: 14ch;
}
.hero-heading em { font-style: italic; color: var(--color-primary); }
.hero-sub {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  max-width: 52ch;
  margin-bottom: var(--space-8);
}
.hero-cta { display: flex; flex-wrap: wrap; gap: var(--space-3); margin-bottom: var(--space-16); }
.hero-stats {
  display: flex; flex-wrap: wrap; gap: var(--space-8);
  padding-top: var(--space-8); border-top: 1px solid var(--color-border);
}
.stat {}
.stat-num {
  display: block; font-family: var(--font-display); font-size: var(--text-xl);
  color: var(--color-primary); font-weight: 700;
}
.stat-label { font-size: var(--text-xs); color: var(--color-text-muted); }

/* ─── TOKEN DEMO ─── */
.explainer-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8);
  margin-bottom: var(--space-16);
}
@media (max-width: 768px) { .explainer-grid { grid-template-columns: 1fr; } }
.primary-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-8);
}
.token-demo { display: flex; flex-direction: column; gap: var(--space-4); }
.token-demo label { font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); }
.token-input input {
  width: 100%; padding: var(--space-3) var(--space-4);
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); font-size: var(--text-base); color: var(--color-text);
  margin-top: var(--space-2);
}
.token-input input:focus { outline: 2px solid var(--color-primary); outline-offset: 2px; }
.token-output {
  display: flex; flex-wrap: wrap; gap: var(--space-2);
  min-height: 44px; padding: var(--space-3);
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md);
}
.token-chip {
  display: inline-block; padding: 2px 8px; border-radius: var(--radius-sm);
  font-size: var(--text-xs); font-family: var(--font-mono); font-weight: 500;
  border: 1px solid currentColor;
}
.token-chip:nth-child(7n+1) { color: #0d7377; background: rgba(13,115,119,0.12); }
.token-chip:nth-child(7n+2) { color: #8e44ad; background: rgba(142,68,173,0.12); }
.token-chip:nth-child(7n+3) { color: #d4a017; background: rgba(212,160,23,0.12); }
.token-chip:nth-child(7n+4) { color: #e67e22; background: rgba(230,126,34,0.12); }
.token-chip:nth-child(7n+5) { color: #2980b9; background: rgba(41,128,185,0.12); }
.token-chip:nth-child(7n+6) { color: #c0392b; background: rgba(192,57,43,0.12); }
.token-chip:nth-child(7n+0) { color: #2d6a4f; background: rgba(45,106,79,0.12); }
.token-count { font-size: var(--text-sm); color: var(--color-text-muted); font-family: var(--font-mono); }
.explainer-facts { display: flex; flex-direction: column; gap: var(--space-6); }
.fact-item { display: flex; gap: var(--space-4); align-items: flex-start; }
.fact-icon {
  flex-shrink: 0; width: 40px; height: 40px; border-radius: var(--radius-md);
  background: var(--color-primary-light); color: var(--color-primary);
  display: flex; align-items: center; justify-content: center;
}
.fact-item strong { display: block; font-size: var(--text-sm); font-weight: 700; margin-bottom: 2px; }
.fact-item p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }

/* ─── TOKEN FLOW ─── */
.flow-section { margin-bottom: var(--space-16); }
.token-flow {
  display: flex; align-items: stretch; flex-wrap: wrap; gap: var(--space-2);
  padding: var(--space-6);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); margin-top: var(--space-6);
}
.flow-step {
  flex: 1; min-width: 180px;
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-4);
}
.highlight-step {
  background: var(--color-primary-light);
  border-color: color-mix(in oklch, var(--color-primary) 40%, transparent);
}
.flow-num {
  font-size: var(--text-xs); font-weight: 700; color: var(--color-text-muted);
  font-family: var(--font-mono); margin-bottom: var(--space-2);
}
.flow-content strong { display: block; font-size: var(--text-sm); font-weight: 700; margin-bottom: var(--space-2); }
.flow-content p { font-size: var(--text-xs); color: var(--color-text-muted); margin: 0; }
.flow-badge {
  display: inline-block; font-size: var(--text-xs); font-weight: 700;
  padding: 1px 8px; border-radius: var(--radius-full);
  letter-spacing: 0.06em; text-transform: uppercase; margin-bottom: var(--space-2);
}
.flow-badge.input { background: var(--color-primary-light); color: var(--color-primary); }
.flow-badge.output { background: rgba(230,126,34,0.15); color: var(--color-accent-warm); }
.flow-arrow { display: flex; align-items: center; color: var(--color-text-faint); font-size: 1.5rem; padding-top: 1rem; }

/* ─── BUYING CARDS ─── */
.buying-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-6); }
@media (max-width: 768px) { .buying-grid { grid-template-columns: 1fr; } }
.buying-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-6);
}
.buying-icon { font-size: 2rem; margin-bottom: var(--space-3); }
.buying-card h4 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-2); }
.buying-card p { font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-4); }
.buying-tag {
  display: inline-block; font-size: var(--text-xs); font-weight: 600;
  padding: 3px 12px; border-radius: var(--radius-full);
  background: var(--color-surface-2); color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.active-tag {
  background: var(--color-primary-light); color: var(--color-primary);
  border-color: color-mix(in oklch, var(--color-primary) 30%, transparent);
}

/* ─── PRICING TABLE ─── */
.filter-row { display: flex; flex-wrap: wrap; gap: var(--space-2); margin-bottom: var(--space-6); }
.filter-btn {
  padding: var(--space-2) var(--space-4); border-radius: var(--radius-full);
  font-size: var(--text-xs); font-weight: 600; border: 1px solid var(--color-border);
  color: var(--color-text-muted); background: transparent;
  transition: all var(--transition);
}
.filter-btn.active, .filter-btn:hover { background: var(--color-primary); color: var(--color-text-inverse); border-color: var(--color-primary); }
.pricing-table-wrap {
  overflow-x: auto; border-radius: var(--radius-xl);
  border: 1px solid var(--color-border);
  margin-bottom: var(--space-4);
}
.pricing-table { min-width: 800px; }
.pricing-table thead { background: var(--color-surface); }
.pricing-table th {
  padding: var(--space-3) var(--space-4); text-align: left;
  font-size: var(--text-xs); font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.08em; color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border); white-space: nowrap;
}
.pricing-table td {
  padding: var(--space-3) var(--space-4); font-size: var(--text-sm);
  border-bottom: 1px solid var(--color-divider); vertical-align: middle;
}
.pricing-table tbody tr { transition: background var(--transition); }
.pricing-table tbody tr:hover { background: var(--color-surface); }
.pricing-table tbody tr:last-child td { border-bottom: none; }
.model-name { font-weight: 600; font-size: var(--text-sm); }
.provider {
  display: inline-block; font-size: var(--text-xs); font-weight: 600;
  padding: 2px 8px; border-radius: var(--radius-full);
}
.provider.openai { background: rgba(16,163,127,0.12); color: #10a37f; }
.provider.anthropic { background: rgba(209,93,62,0.12); color: #d15d3e; }
.provider.google { background: rgba(66,133,244,0.12); color: #4285f4; }
.provider.deepseek { background: rgba(139,92,246,0.12); color: #8b5cf6; }
.provider.meta { background: rgba(24,119,242,0.12); color: #1877f2; }
.provider.mistral { background: rgba(255,126,0,0.12); color: #ff7e00; }
.tier-badge {
  display: inline-block; font-size: var(--text-xs); font-weight: 600;
  padding: 2px 8px; border-radius: var(--radius-full); white-space: nowrap;
}
.tier-badge.flagship { background: rgba(234,179,8,0.15); color: #a16207; }
[data-theme="dark"] .tier-badge.flagship { color: #fbbf24; }
.tier-badge.mid { background: rgba(59,130,246,0.12); color: #1d4ed8; }
[data-theme="dark"] .tier-badge.mid { color: #60a5fa; }
.tier-badge.fast { background: rgba(34,197,94,0.12); color: #15803d; }
[data-theme="dark"] .tier-badge.fast { color: #4ade80; }
.tier-badge.reasoning { background: rgba(168,85,247,0.12); color: #7e22ce; }
[data-theme="dark"] .tier-badge.reasoning { color: #c084fc; }
.tier-badge.opensource { background: rgba(249,115,22,0.12); color: #c2410c; }
[data-theme="dark"] .tier-badge.opensource { color: #fb923c; }
.price { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 600; }
.price.high { color: var(--color-red); }
.price.good { color: var(--color-success); }
.pricing-note {
  display: flex; align-items: flex-start; gap: var(--space-2);
  font-size: var(--text-xs); color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4); background: var(--color-surface);
  border-radius: var(--radius-md); border: 1px solid var(--color-border);
}
.pricing-note a { color: var(--color-primary); }

/* ─── SCENARIO CARDS ─── */
.scenario-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-6); margin-top: var(--space-6); }
@media (max-width: 900px) { .scenario-grid { grid-template-columns: 1fr; } }
.scenario-card {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-6); overflow: hidden;
}
.scenario-label { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-muted); margin-bottom: var(--space-4); text-transform: uppercase; letter-spacing: 0.08em; }
.scenario-rows { display: flex; flex-direction: column; gap: var(--space-3); }
.scenario-row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-2); }
.scenario-row span { font-size: var(--text-sm); color: var(--color-text-muted); }
.scenario-row strong { font-family: var(--font-mono); font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
.scenario-row small { font-size: var(--text-xs); color: var(--color-text-faint); display: block; }

/* ─── LEVERS ─── */
.levers-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6);
  margin-bottom: var(--space-12);
}
@media (max-width: 768px) { .levers-grid { grid-template-columns: 1fr; } }
.lever-card {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-6);
  display: flex; flex-direction: column; gap: var(--space-4);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.lever-card:hover { box-shadow: var(--shadow-md); border-color: color-mix(in oklch, var(--color-primary) 40%, transparent); }
.lever-header { display: flex; align-items: center; gap: var(--space-3); }
.lever-num { font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 700; color: var(--color-text-faint); }
.impact-badge { font-size: var(--text-xs); font-weight: 700; padding: 2px 10px; border-radius: var(--radius-full); text-transform: uppercase; letter-spacing: 0.06em; }
.impact-high { background: rgba(239,68,68,0.12); color: #b91c1c; }
[data-theme="dark"] .impact-high { color: #f87171; }
.impact-medium { background: rgba(234,179,8,0.12); color: #a16207; }
[data-theme="dark"] .impact-medium { color: #fbbf24; }
.impact-low { background: rgba(59,130,246,0.12); color: #1d4ed8; }
[data-theme="dark"] .impact-low { color: #60a5fa; }
.lever-card h3 { font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
.lever-card p { font-size: var(--text-sm); color: var(--color-text-muted); }
.lever-example {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: var(--space-4); font-size: var(--text-sm);
}
.example-label { font-size: var(--text-xs); font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.lever-example ul { padding-left: var(--space-5); display: flex; flex-direction: column; gap: var(--space-1); }
.lever-example li { font-size: var(--text-sm); color: var(--color-text-muted); }
.lever-example p { font-size: var(--text-sm); color: var(--color-text-muted); margin: 0; }
.lever-tip {
  font-size: var(--text-xs); color: var(--color-text-muted);
  padding: var(--space-3) var(--space-4); background: var(--color-primary-light);
  border-radius: var(--radius-md); border-left: 3px solid var(--color-primary);
}
.lever-tip strong { color: var(--color-primary); }
.lever-savings {
  font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 700;
  color: var(--color-success); margin-top: auto;
}
.code-block { font-family: var(--font-mono); font-size: var(--text-xs); }
.code-before { color: var(--color-red); background: rgba(239,68,68,0.08); padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); border: 1px solid rgba(239,68,68,0.2); margin-bottom: var(--space-2); }
.code-arrow { text-align: center; color: var(--color-text-faint); font-size: 1.2rem; margin-block: var(--space-1); }
.code-after { color: var(--color-success); background: rgba(34,197,94,0.08); padding: var(--space-2) var(--space-3); border-radius: var(--radius-sm); border: 1px solid rgba(34,197,94,0.2); }

/* ─── SAVINGS BAR CHART ─── */
.savings-summary {
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-8);
}
.savings-bar-chart { display: flex; flex-direction: column; gap: var(--space-4); margin-top: var(--space-6); }
.savings-bar-row { display: flex; align-items: center; gap: var(--space-4); }
.savings-bar-label { font-size: var(--text-sm); color: var(--color-text-muted); width: 240px; flex-shrink: 0; }
@media (max-width: 600px) { .savings-bar-label { width: 140px; font-size: var(--text-xs); } }
.savings-bar-track { flex: 1; height: 24px; background: var(--color-bg); border-radius: var(--radius-full); border: 1px solid var(--color-border); overflow: hidden; }
.savings-bar-fill {
  height: 100%; background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full); display: flex; align-items: center; justify-content: flex-end;
  padding-right: var(--space-3); font-size: var(--text-xs); font-weight: 700; color: white;
  transition: width 1s ease;
}
.savings-note { font-size: var(--text-xs); color: var(--color-text-faint); margin-top: var(--space-4); }

/* ─── HOSTING ─── */
.hosting-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-6); margin-bottom: var(--space-16); }
@media (max-width: 768px) { .hosting-grid { grid-template-columns: 1fr; } }
.hosting-card {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-4);
}
.hosting-highlight {
  border-color: color-mix(in oklch, var(--color-primary) 50%, transparent);
  box-shadow: 0 0 0 3px color-mix(in oklch, var(--color-primary) 12%, transparent);
}
.hosting-header { display: flex; align-items: center; gap: var(--space-3); }
.hosting-icon { font-size: 1.5rem; }
.hosting-header h3 { font-size: var(--text-base); font-weight: 700; }
.hosting-meta { display: flex; flex-wrap: wrap; gap: var(--space-2); }
.meta-tag { font-size: var(--text-xs); font-weight: 600; padding: 2px 10px; border-radius: var(--radius-full); background: var(--color-surface); border: 1px solid var(--color-border); color: var(--color-text-muted); }
.hosting-pros, .hosting-cons { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.hosting-pros li, .hosting-cons li { font-size: var(--text-sm); color: var(--color-text-muted); }
.hosting-price { font-family: var(--font-mono); font-size: var(--text-sm); font-weight: 600; color: var(--color-text); }
.hosting-verdict { font-size: var(--text-sm); color: var(--color-primary); font-weight: 600; }

/* ─── TCO ─── */
.tco-section { margin-bottom: var(--space-16); }
.tco-cards { display: grid; grid-template-columns: repeat(4,1fr); gap: var(--space-4); margin-top: var(--space-6); margin-bottom: var(--space-8); }
@media (max-width: 900px) { .tco-cards { grid-template-columns: repeat(2,1fr); } }
.tco-card {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-5); text-align: center;
}
.tco-highlight { border-color: var(--color-primary); background: var(--color-primary-light); }
.tco-threshold { font-family: var(--font-display); font-size: var(--text-lg); color: var(--color-primary); margin-bottom: var(--space-2); }
.tco-card p { font-size: var(--text-xs); color: var(--color-text-muted); }
.tco-visual { }
.tco-bar-chart {
  display: flex; align-items: flex-end; gap: var(--space-12);
  padding: var(--space-6); background: var(--color-bg);
  border: 1px solid var(--color-border); border-radius: var(--radius-xl);
  min-height: 400px; margin-bottom: var(--space-4);
}
.tco-year { display: flex; flex-direction: column; align-items: center; gap: var(--space-3); flex: 1; }
.tco-year-label { font-size: var(--text-xs); color: var(--color-text-muted); font-weight: 600; text-align: center; }
.tco-year-label small { color: var(--color-text-faint); font-weight: 400; }
.tco-bars { display: flex; align-items: flex-end; gap: var(--space-3); }
.tco-bar {
  width: 60px; border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  display: flex; align-items: flex-start; justify-content: center; padding-top: 6px;
  transition: all var(--transition);
}
.tco-bar span { font-size: 10px; font-weight: 700; color: white; writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }
.tco-bar.api { background: linear-gradient(180deg, var(--color-red), rgba(192,57,43,0.7)); }
.tco-bar.ncp { background: linear-gradient(180deg, var(--color-orange), rgba(230,126,34,0.7)); }
.tco-bar.factory { background: linear-gradient(180deg, var(--color-primary), color-mix(in oklch, var(--color-primary) 70%, transparent)); }
.tco-legend { display: flex; align-items: center; gap: var(--space-6); font-size: var(--text-sm); color: var(--color-text-muted); margin-bottom: var(--space-2); }
.legend-dot { width: 12px; height: 12px; border-radius: var(--radius-full); display: inline-block; }
.api-dot { background: var(--color-red); }
.ncp-dot { background: var(--color-orange); }
.factory-dot { background: var(--color-primary); }
.tco-source { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ─── STACK DONUT ─── */
.stack-section { }
.stack-donut-wrap {
  display: flex; gap: var(--space-10); align-items: flex-start;
  padding: var(--space-8); background: var(--color-bg);
  border: 1px solid var(--color-border); border-radius: var(--radius-xl);
  flex-wrap: wrap;
}
.stack-donut { flex-shrink: 0; }
.stack-legend { flex: 1; min-width: 260px; display: flex; flex-direction: column; gap: var(--space-5); }
.stack-legend-item { display: flex; gap: var(--space-3); align-items: flex-start; }
.stack-dot { width: 14px; height: 14px; border-radius: var(--radius-full); flex-shrink: 0; margin-top: 3px; }
.stack-legend-item strong { font-size: var(--text-sm); font-weight: 700; display: block; }
.stack-legend-item span { font-family: var(--font-mono); font-size: var(--text-xs); color: var(--color-primary); display: block; margin-bottom: 2px; }
.stack-legend-item p { font-size: var(--text-xs); color: var(--color-text-muted); margin: 0; }

/* ─── CALCULATOR ─── */
.calculator-wrap {
  display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-8);
  background: var(--color-surface); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-8);
}
@media (max-width: 768px) { .calculator-wrap { grid-template-columns: 1fr; } }
.calc-inputs h3, .calc-results h3 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-6); }
.calc-group { margin-bottom: var(--space-5); }
.calc-group label { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.calc-group label small { font-weight: 400; font-size: var(--text-xs); }
.calc-group input, .calc-group select {
  width: 100%; padding: var(--space-3) var(--space-4);
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); font-size: var(--text-sm); color: var(--color-text);
  transition: border-color var(--transition);
}
.calc-group input:focus, .calc-group select:focus { outline: 2px solid var(--color-primary); outline-offset: 2px; border-color: var(--color-primary); }
.calc-optimisations { display: flex; flex-direction: column; gap: var(--space-3); }
.opt-toggle {
  display: flex; align-items: center; gap: var(--space-3);
  font-size: var(--text-sm); color: var(--color-text-muted); cursor: pointer;
  padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  border: 1px solid var(--color-border); background: var(--color-bg);
  transition: background var(--transition);
}
.opt-toggle:hover { background: var(--color-surface); }
.opt-toggle input[type="checkbox"] { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-track {
  width: 36px; height: 20px; border-radius: var(--radius-full);
  background: var(--color-border); flex-shrink: 0; position: relative;
  transition: background var(--transition);
}
.toggle-track::after {
  content: ''; position: absolute; left: 2px; top: 2px;
  width: 16px; height: 16px; border-radius: var(--radius-full);
  background: white; transition: transform var(--transition);
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}
.opt-toggle input:checked ~ .toggle-track { background: var(--color-primary); }
.opt-toggle input:checked ~ .toggle-track::after { transform: translateX(16px); }
.opt-impact { margin-left: auto; font-family: var(--font-mono); font-size: var(--text-xs); font-weight: 700; color: var(--color-success); white-space: nowrap; }

.calc-results { display: flex; flex-direction: column; gap: var(--space-4); }
.calc-result-primary {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-6); text-align: center;
}
.calc-result-primary.optimised { border-color: var(--color-primary); background: var(--color-primary-light); }
.result-label { font-size: var(--text-xs); font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--color-text-muted); margin-bottom: var(--space-2); }
.result-value { font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 700; color: var(--color-text); }
.calc-result-primary.optimised .result-value { color: var(--color-primary); }
.calc-arrow-down { text-align: center; font-size: 1.5rem; color: var(--color-text-faint); }
.savings-callout {
  text-align: center; background: var(--color-success-light);
  border: 1px solid color-mix(in oklch, var(--color-success) 30%, transparent);
  border-radius: var(--radius-lg); padding: var(--space-4);
  font-weight: 700; color: var(--color-success);
}
#savingsPct { font-family: var(--font-display); font-size: var(--text-xl); display: block; }
#savingsAmt { font-size: var(--text-sm); font-family: var(--font-mono); font-weight: 500; }
.calc-breakdown {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); overflow: hidden;
}
.breakdown-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-2) var(--space-4); font-size: var(--text-xs);
  border-bottom: 1px solid var(--color-divider);
}
.breakdown-row:last-child { border-bottom: none; }
.breakdown-row span:first-child { color: var(--color-text-muted); }
.breakdown-row span:last-child { font-family: var(--font-mono); font-weight: 600; }
.divider-row { border-top: 2px solid var(--color-border); }
.total-row { background: var(--color-surface); font-weight: 700; }
.total-row span:last-child { color: var(--color-primary); }
.calc-note { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ─── OPEN SOURCE TABLE ─── */
.os-table-wrap {
  overflow-x: auto; border-radius: var(--radius-xl);
  border: 1px solid var(--color-border); margin-top: var(--space-6);
}

/* ─── FINOPS MATURITY ─── */
.maturity-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-6); margin-top: var(--space-6); }
@media (max-width: 768px) { .maturity-grid { grid-template-columns: 1fr; } }
.maturity-card {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-xl); padding: var(--space-6);
  position: relative; overflow: hidden;
}
.maturity-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--color-primary);
}
.maturity-card:nth-child(2)::before { background: var(--color-accent); }
.maturity-card:nth-child(3)::before { background: var(--color-gold); }
.maturity-step { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: var(--space-2); }
.maturity-card h4 { font-size: var(--text-base); font-weight: 700; margin-bottom: var(--space-4); }
.maturity-card ul { list-style: none; display: flex; flex-direction: column; gap: var(--space-2); }
.maturity-card li { font-size: var(--text-sm); color: var(--color-text-muted); padding-left: var(--space-5); position: relative; }
.maturity-card li::before { content: '→'; position: absolute; left: 0; color: var(--color-primary); font-weight: 700; }

/* ─── TOOLS GRID ─── */
.tools-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: var(--space-5); margin-top: var(--space-6); }
@media (max-width: 768px) { .tools-grid { grid-template-columns: 1fr 1fr; } }
.tool-card {
  background: var(--color-bg); border: 1px solid var(--color-border);
  border-radius: var(--radius-lg); padding: var(--space-5);
  transition: box-shadow var(--transition), border-color var(--transition);
}
.tool-card:hover { box-shadow: var(--shadow-md); border-color: color-mix(in oklch, var(--color-primary) 40%, transparent); }
.tool-name { font-size: var(--text-sm); font-weight: 700; margin-bottom: var(--space-1); }
.tool-type { font-size: var(--text-xs); color: var(--color-text-muted); margin-bottom: var(--space-3); }
.tool-feature { font-size: var(--text-xs); color: var(--color-primary); font-weight: 600; }

/* ─── STAT HIGHLIGHT STRIP ─── */
.stat-strip {
  background: var(--color-primary); color: white;
  padding: var(--space-8) 0;
}
.stat-strip .container { display: flex; flex-wrap: wrap; gap: var(--space-12); justify-content: center; }
.strip-stat { text-align: center; }
.strip-num { font-family: var(--font-display); font-size: var(--text-2xl); font-weight: 700; display: block; }
.strip-label { font-size: var(--text-xs); opacity: 0.75; text-transform: uppercase; letter-spacing: 0.08em; }

/* ─── FOOTER ─── */
.footer {
  background: var(--color-surface); border-top: 1px solid var(--color-border);
  padding-block: var(--space-10);
}
.footer-inner { display: flex; flex-direction: column; gap: var(--space-6); }
.footer-logo { display: flex; align-items: center; gap: var(--space-3); font-family: var(--font-display); font-size: var(--text-lg); }
.footer-links { display: flex; flex-wrap: wrap; gap: var(--space-6); }
.footer-links a { font-size: var(--text-sm); color: var(--color-text-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-primary); }
.footer-note { font-size: var(--text-xs); color: var(--color-text-faint); max-width: 60ch; }

/* ─── UTILITIES ─── */
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); border: 0; }
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ─── RESPONSIVE ─── */
@media (max-width: 640px) {
  .nav-links { display: none; }
  .hero-heading { font-size: clamp(2rem, 8vw, 3rem); }
  .tco-bar-chart { min-height: 250px; }
  .tco-bar { width: 40px; }
  .tco-bar span { font-size: 8px; }
}