:root {
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI Variable", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-display: -apple-system, "SF Pro Display", "Segoe UI Variable Display", "Segoe UI", ui-sans-serif, system-ui, Roboto, Arial, sans-serif;

  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;

  --text-h1: clamp(2.1rem, 4.6vw, 3.4rem);
  --text-h2: clamp(1.6rem, 3.2vw, 2.5rem);
  --text-h3: 1.3rem;
  --text-body-lg: 1.125rem;
  --text-body: 1rem;
  --text-small: 0.875rem;
  --text-micro: 0.75rem;

  --tracking-h1: -0.03em;
  --tracking-h2: -0.02em;
  --tracking-eyebrow: 0.14em;
  --leading-tight: 1.06;
  --leading-snug: 1.15;
  --leading-normal: 1.55;
  --leading-relaxed: 1.65;

  /* OTO variant — deep navy + gold */
  --color-brand: #12141a;
  --color-brand-dark: #08090c;
  --color-brand-light: #363b48;
  --color-brand-soft: #e7e9ef;

  --color-accent: #eab308;        /* gold — for fills / graphics */
  --color-accent-dark: #8a6d00;   /* 4.5:1 on white — for gold text on light */
  --color-accent-bright: #fbbf24;
  --color-accent-soft: #fdf3c7;

  --color-accent-blue: #2563eb;
  --color-accent-teal: #0d9488;
  --color-accent-coral: #e5573f;
  --color-accent-amber: #b26a00;
  --color-accent-violet: #7c3aed;
  --color-accent-emerald: #059669;

  --color-neutral-0: #ffffff;
  --color-neutral-50: #fafbfc;
  --color-neutral-100: #f4f6f9;
  --color-neutral-200: #e6eaf1;
  --color-neutral-300: #cdd4de;
  --color-neutral-400: #99a3b4;
  --color-neutral-500: #6b7385;
  --color-neutral-700: #363b48;
  --color-neutral-900: #12141a;
  --color-neutral-950: #08090c;

  --color-surface: var(--color-neutral-0);
  --color-surface-alt: var(--color-neutral-50);
  --color-surface-tinted: color-mix(in oklab, var(--color-accent) 6%, var(--color-neutral-0));
  --color-surface-inverse: var(--color-neutral-900);

  --color-text-primary: var(--color-neutral-900);
  --color-text-secondary: var(--color-neutral-700);
  --color-text-muted: var(--color-neutral-500);
  --color-text-inverse: var(--color-neutral-0);

  --color-border: var(--color-neutral-200);
  --color-border-strong: var(--color-neutral-300);

  --gradient-brand: linear-gradient(135deg, #2a2f3d 0%, #12141a 60%, #08090c 100%);
  --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #eab308 55%, #b7890a 100%);
  --gradient-hero-fade: linear-gradient(180deg, var(--color-surface-tinted) 0%, var(--color-surface) 100%);
  --gradient-mesh-1: radial-gradient(60% 60% at 18% 12%, color-mix(in oklab, var(--color-accent) 30%, transparent), transparent 70%),
                     radial-gradient(50% 50% at 88% 24%, color-mix(in oklab, #6366f1 20%, transparent), transparent 72%);
  --gradient-mesh-2: radial-gradient(45% 60% at 82% 90%, color-mix(in oklab, var(--color-accent) 16%, transparent), transparent 70%);

  --shadow-xs: 0 1px 2px rgba(8, 9, 12, 0.06);
  --shadow-sm: 0 1px 2px rgba(8, 9, 12, 0.05), 0 4px 8px -4px rgba(8, 9, 12, 0.08);
  --shadow-md: 0 2px 4px rgba(8, 9, 12, 0.05), 0 8px 20px -8px rgba(8, 9, 12, 0.16);
  --shadow-lg: 0 4px 12px rgba(8, 9, 12, 0.08), 0 20px 40px -20px rgba(8, 9, 12, 0.28);
  --shadow-brand-glow: 0 10px 28px -12px color-mix(in oklab, var(--color-accent) 55%, transparent);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-2xl: 24px;
  --radius-pill: 999px;

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 1rem; --space-4: 1.5rem;
  --space-5: 2rem; --space-6: 3rem; --space-7: 4rem; --space-8: 6rem;

  --pad-section-sm: clamp(2rem, 4vw, 3rem);
  --pad-section: clamp(3rem, 6vw, 5rem);
  --pad-section-lg: clamp(4rem, 8vw, 7rem);

  --duration-fast: 150ms; --duration-med: 240ms; --duration-slow: 400ms;
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { margin: 0; font-family: var(--font-body); font-size: var(--text-body); line-height: var(--leading-normal); color: var(--color-text-primary); background: var(--color-surface); -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; }
img, svg { max-width: 100%; }
a { color: var(--color-accent-dark); }
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: var(--weight-bold); line-height: var(--leading-snug); margin: 0 0 var(--space-3); }
h1 { font-size: var(--text-h1); letter-spacing: var(--tracking-h1); line-height: var(--leading-tight); }
h2 { font-size: var(--text-h2); letter-spacing: var(--tracking-h2); }
h3 { font-size: var(--text-h3); font-weight: var(--weight-semibold); }
p { margin: 0 0 var(--space-3); }

.eyebrow { display: inline-block; font-size: var(--text-micro); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; color: var(--color-accent-dark); margin-bottom: var(--space-3); }

*:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: var(--radius-sm); }
.skip-link { position: absolute; top: -100px; left: 0; z-index: 100; background: var(--color-accent); color: var(--color-neutral-900); padding: 12px 16px; font-weight: var(--weight-semibold); border-radius: 0 0 var(--radius-md) 0; }
.skip-link:focus { top: 0; }

.container { max-width: 1120px; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }
.container-narrow { max-width: 720px; margin-inline: auto; padding-inline: clamp(1rem, 4vw, 2rem); }

.section-head--center { text-align: center; max-width: 60ch; margin-inline: auto; }
.section-head--left { text-align: left; max-width: 54ch; }

main > section { padding-block: var(--pad-section); }
main > section[data-visible] { opacity: 0; transform: translateY(20px); transition: opacity var(--duration-slow) var(--ease-out-quart), transform var(--duration-slow) var(--ease-out-quart); }
main > section[data-visible="true"] { opacity: 1; transform: translateY(0); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2); font-family: var(--font-body); font-weight: var(--weight-bold); letter-spacing: -0.005em; border: 0; cursor: pointer; text-decoration: none; white-space: nowrap; transition: transform var(--duration-med) var(--ease-out-quart), box-shadow var(--duration-med) var(--ease-out-quart), background var(--duration-med) var(--ease-out-quart); }
.btn--lg { padding: 1rem 2rem; font-size: var(--text-body-lg); border-radius: var(--radius-lg); min-height: 56px; }
.btn--md { padding: 0.75rem 1.5rem; font-size: var(--text-body); border-radius: var(--radius-lg); min-height: 44px; }
.btn-primary { background: var(--gradient-gold); color: var(--color-neutral-950); box-shadow: var(--shadow-brand-glow); }
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 14px 32px -12px color-mix(in oklab, var(--color-accent) 75%, transparent); }
.btn-primary:active { transform: translateY(0); }
.btn-primary svg { transition: transform var(--duration-med) var(--ease-out-quart); }
.btn-primary:hover svg { transform: translateX(4px); }
.btn-secondary { background: transparent; color: var(--color-accent-dark); box-shadow: inset 0 0 0 1.5px var(--color-accent); }
.btn-secondary:hover { background: var(--color-accent-soft); transform: translateY(-1px); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 40; background: color-mix(in oklab, var(--color-neutral-950) 90%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid rgba(255,255,255,0.08); padding-block: var(--space-3); transition: padding var(--duration-med) var(--ease-out-quart); }
.site-header[data-compact="true"] { padding-block: var(--space-2); box-shadow: var(--shadow-md); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); }
.brand { display: inline-flex; align-items: center; gap: var(--space-2); font-family: var(--font-display); font-weight: var(--weight-bold); letter-spacing: -0.02em; font-size: 1.0625rem; color: #fff; text-decoration: none; }
.brand__mark { display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: var(--radius-md); background: var(--gradient-gold); color: var(--color-neutral-950); flex: none; }
.brand__mark svg { width: 20px; height: 20px; }
.brand__badge { margin-left: var(--space-2); padding: 0.2rem 0.6rem; font-size: var(--text-micro); font-weight: var(--weight-semibold); letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-neutral-950); background: var(--color-accent); border-radius: var(--radius-pill); }
.site-header .btn { display: none; }
@media (min-width: 768px) { .site-header .btn { display: inline-flex; } }

/* Hero — dark */
.hero { position: relative; overflow: hidden; background: var(--gradient-brand); color: var(--color-text-inverse); padding-block: clamp(3rem, 7vw, 5.5rem); }
.hero::before { content: ""; position: absolute; inset: 0; background: var(--gradient-mesh-1); opacity: 0.55; pointer-events: none; }
.hero .container { position: relative; }
.hero-grid { display: grid; gap: clamp(2rem, 4vw, 3.5rem); align-items: center; }
@media (min-width: 1024px) { .hero-grid { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); } }
.hero h1 { color: #fff; margin-bottom: var(--space-4); }
.hero .sub-hero { font-size: var(--text-body-lg); color: var(--color-neutral-300); max-width: 48ch; margin-bottom: var(--space-5); }
.hero-cta-row { display: flex; flex-wrap: wrap; gap: var(--space-3); align-items: center; }
@media (max-width: 520px) { .hero .btn-primary { width: 100%; } }
.pill { display: inline-flex; align-items: center; gap: var(--space-2); padding: 0.4rem 0.85rem; font-size: var(--text-micro); font-weight: var(--weight-semibold); letter-spacing: 0.06em; text-transform: uppercase; border-radius: var(--radius-pill); background: color-mix(in oklab, var(--color-accent) 20%, transparent); color: var(--color-accent-bright); border: 1px solid color-mix(in oklab, var(--color-accent) 40%, transparent); margin-bottom: var(--space-4); }
.pill svg { width: 14px; height: 14px; }
.trust-anchor { display: inline-flex; align-items: center; gap: var(--space-2); margin-top: var(--space-4); padding: 0.5rem 1rem; background: rgba(255,255,255,0.06); color: var(--color-neutral-300); font-size: var(--text-small); font-weight: var(--weight-medium); border-radius: var(--radius-pill); border: 1px solid rgba(255,255,255,0.12); }
.trust-anchor svg { width: 16px; height: 16px; color: var(--color-accent-bright); }

.hero-visual { width: 100%; height: auto; display: block; filter: drop-shadow(0 24px 48px rgba(0,0,0,0.4)); border-radius: var(--radius-2xl); }
@media (min-width: 1024px) { .hero-visual { max-width: 600px; margin-left: auto; } }

/* Problem — two-column */
.problem-grid { display: grid; gap: clamp(1.5rem, 4vw, 3rem); align-items: start; }
@media (min-width: 900px) { .problem-grid { grid-template-columns: 0.9fr 1.1fr; } }
.problem-kicker { font-size: var(--text-body-lg); font-weight: var(--weight-semibold); color: var(--color-accent-dark); }
.section-tinted { background: var(--color-surface-tinted); }

/* Feature list — icon tiles */
.feature-grid { display: grid; gap: var(--space-4); grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); margin-top: var(--space-5); }
.feature-item { display: grid; grid-template-columns: 48px 1fr; gap: var(--space-3); align-items: start; background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: var(--space-4); box-shadow: var(--shadow-xs); transition: transform var(--duration-med) var(--ease-out-quart), box-shadow var(--duration-med) var(--ease-out-quart); }
.feature-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.feature-item h3 { margin: 0 0 var(--space-1); font-size: 1.0625rem; }
.feature-item p { margin: 0; color: var(--color-text-secondary); font-size: var(--text-small); }
.icon-tile { display: inline-grid; place-items: center; width: 44px; height: 44px; border-radius: var(--radius-lg); background: var(--tile-bg); color: var(--tile-fg); transition: transform var(--duration-med) var(--ease-out-quart); }
.feature-item:hover .icon-tile { transform: scale(1.05); }
.icon-tile--blue { --tile-bg: color-mix(in oklab, var(--color-accent-blue) 15%, var(--color-surface)); --tile-fg: var(--color-accent-blue); }
.icon-tile--teal { --tile-bg: color-mix(in oklab, var(--color-accent-teal) 15%, var(--color-surface)); --tile-fg: var(--color-accent-teal); }
.icon-tile--coral { --tile-bg: color-mix(in oklab, var(--color-accent-coral) 15%, var(--color-surface)); --tile-fg: var(--color-accent-coral); }
.icon-tile--amber { --tile-bg: color-mix(in oklab, var(--color-accent-amber) 16%, var(--color-surface)); --tile-fg: var(--color-accent-amber); }
.icon-tile--violet { --tile-bg: color-mix(in oklab, var(--color-accent-violet) 15%, var(--color-surface)); --tile-fg: var(--color-accent-violet); }
.icon-tile--emerald { --tile-bg: color-mix(in oklab, var(--color-accent-emerald) 15%, var(--color-surface)); --tile-fg: var(--color-accent-emerald); }
.icon-tile--gold { --tile-bg: color-mix(in oklab, var(--color-accent) 20%, var(--color-surface)); --tile-fg: var(--color-accent-dark); }

/* Before/after split */
.split { display: grid; gap: var(--space-4); margin-top: var(--space-5); }
@media (min-width: 820px) { .split { grid-template-columns: 1fr 1fr; } }
.split-card { border-radius: var(--radius-2xl); padding: var(--space-5); box-shadow: var(--shadow-md); }
.split-card--before { background: var(--color-neutral-100); border: 1px solid var(--color-border); }
.split-card--after { background: var(--color-surface-inverse); color: var(--color-text-inverse); border: 1px solid transparent; box-shadow: var(--shadow-lg); position: relative; overflow: hidden; }
.split-card--after::before { content: ""; position: absolute; inset: 0; background: var(--gradient-mesh-2); opacity: 0.5; pointer-events: none; }
.split-card > * { position: relative; }
.split-card--after h3 { color: #fff; }
.split-card--after p { color: var(--color-neutral-300); }
.split-card .tag { display: inline-block; font-size: var(--text-micro); font-weight: var(--weight-semibold); letter-spacing: var(--tracking-eyebrow); text-transform: uppercase; margin-bottom: var(--space-3); }
.split-card--before .tag { color: var(--color-text-muted); }
.split-card--after .tag { color: var(--color-accent-bright); }

/* Value list */
.value-list { list-style: none; padding: 0; margin: var(--space-5) 0 0; display: grid; gap: var(--space-3); }
.value-list li { display: grid; grid-template-columns: 28px 1fr; gap: var(--space-3); align-items: start; background: var(--color-surface); border: 1px solid var(--color-border); border-left: 4px solid var(--color-accent); border-radius: var(--radius-md); padding: var(--space-4); box-shadow: var(--shadow-xs); }
.value-list strong { display: block; margin-bottom: 2px; }
.value-list span.txt { color: var(--color-text-secondary); font-size: var(--text-small); }
.value-list .ic { color: var(--color-accent-dark); margin-top: 2px; }
.value-list .ic svg { width: 22px; height: 22px; }

/* Pricing / CTA card */
.cta-section { background: var(--color-surface-tinted); position: relative; overflow: hidden; }
.cta-section::before { content: ""; position: absolute; inset: 0; background-image: radial-gradient(var(--color-border) 1px, transparent 1px); background-size: 26px 26px; opacity: 0.5; pointer-events: none; }
.cta-section .container { position: relative; }
.pricing-card-featured { position: relative; padding: 2px; background: var(--gradient-gold); border-radius: calc(var(--radius-2xl) + 2px); box-shadow: var(--shadow-lg); max-width: 560px; margin: 0 auto; }
.pricing-ribbon { position: absolute; top: -12px; right: 24px; z-index: 1; padding: 0.25rem 0.75rem; background: var(--color-neutral-900); color: var(--color-accent-bright); font-size: var(--text-micro); font-weight: var(--weight-semibold); letter-spacing: 0.08em; text-transform: uppercase; border-radius: var(--radius-pill); box-shadow: var(--shadow-md); }
.pricing-card-inner { background: var(--color-surface); border-radius: var(--radius-2xl); padding: clamp(1.75rem, 4vw, 2.5rem); text-align: center; }
.price-tag { display: flex; align-items: baseline; gap: var(--space-2); justify-content: center; margin: var(--space-3) 0; }
.price-tag .amount { font-family: var(--font-display); font-size: clamp(3rem, 7vw, 4rem); font-weight: var(--weight-bold); letter-spacing: -0.03em; line-height: 1; }
.price-tag .note { color: var(--color-text-muted); font-weight: var(--weight-medium); }
.pricing-card-inner .btn { width: 100%; margin-top: var(--space-4); }
.pricing-card-inner .fineprint { margin-top: var(--space-3); font-size: var(--text-small); color: var(--color-text-muted); }

/* Terms box (OTO3) */
.terms-box { max-width: 620px; margin: var(--space-5) auto 0; background: var(--color-surface); border: 1px solid var(--color-border-strong); border-radius: var(--radius-lg); padding: var(--space-5); box-shadow: var(--shadow-sm); }
.terms-box ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-3); }
.terms-box li { display: grid; grid-template-columns: 24px 1fr; gap: var(--space-3); align-items: start; }
.terms-box .ic { color: var(--color-accent-dark); }
.terms-box .ic svg { width: 20px; height: 20px; }

/* Guarantee band */
.guarantee-band { background: var(--color-surface-inverse); color: var(--color-text-inverse); position: relative; overflow: hidden; }
.guarantee-band::before { content: ""; position: absolute; width: 420px; height: 420px; right: -80px; top: -120px; background: radial-gradient(circle, color-mix(in oklab, var(--color-accent) 40%, transparent), transparent 70%); pointer-events: none; }
.guarantee-inner { position: relative; display: grid; gap: var(--space-4); align-items: center; }
@media (min-width: 820px) { .guarantee-inner { grid-template-columns: auto 1fr; } }
.guarantee-shield { display: grid; place-items: center; width: 92px; height: 92px; border-radius: var(--radius-2xl); background: color-mix(in oklab, var(--color-accent) 22%, transparent); color: var(--color-accent-bright); box-shadow: var(--shadow-md); }
.guarantee-shield svg { width: 50px; height: 50px; }
.guarantee-band h2 { color: #fff; }
.guarantee-band p { color: var(--color-neutral-300); margin-bottom: 0; }

/* Footer */
.site-footer { background: var(--color-neutral-950); color: var(--color-neutral-400); padding-block: var(--space-6); }
.site-footer .container { display: grid; gap: var(--space-4); }
.site-footer .brand { color: #fff; }
.site-footer p { margin: 0; font-size: var(--text-small); }
.site-footer .disclaimer { max-width: 70ch; line-height: var(--leading-relaxed); }
.site-footer a { color: var(--color-neutral-200); }

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