/* Brake Checker Pro — design system */

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

:root {
  --red: #E11D1D;
  --red-deep: #B71212;
  --amber: #FFB800;
  --ink: #0F0F10;
  --ink-soft: #1A1A1A;
  --steel: #2A2A2D;
  --steel-mid: #4D4D52;
  --paper: #FFFFFF;
  --paper-warm: #FAF8F5;
  --hairline: rgba(15,15,16,0.10);
  --hairline-dark: rgba(255,255,255,0.10);
  --muted: #6E6E73;
  --good: #2E7D4A;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 8px 24px rgba(0,0,0,0.10);
  --shadow-lg: 0 24px 60px rgba(0,0,0,0.18);
  --display: 'Anton', 'Oswald', 'Impact', sans-serif;
  --body: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* UX Pro Max P1 — focus-visible: keyboard focus must be clearly visible */
:focus { outline: none; }
:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 3px;
  border-radius: 4px;
}
.btn:focus-visible {
  outline-offset: 4px;
  box-shadow: 0 0 0 4px rgba(255,184,0,0.35);
}

/* UX Pro Max P1 — skip-to-main link, visually hidden until focused */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--ink);
  color: var(--amber);
  padding: 0.85rem 1.25rem;
  border-radius: 6px;
  font-weight: 700;
  text-decoration: none;
  z-index: 1000;
  transition: top 0.2s ease;
}
.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--amber);
  outline-offset: 2px;
}

/* UX Pro Max P2 — eliminate 300ms iOS tap delay on interactive elements */
a, button, input, select, textarea, [role="button"] {
  touch-action: manipulation;
}

body {
  font-family: var(--body);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--red); text-decoration: none; }
a:hover { color: var(--red-deep); }
button { font: inherit; cursor: pointer; border: 0; background: transparent; }

.wrap { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.wrap-narrow { max-width: 920px; margin: 0 auto; padding: 0 1.5rem; }

/* ====== TYPOGRAPHY ====== */
.display {
  font-family: var(--display);
  font-weight: 400;
  letter-spacing: 0.005em;
  line-height: 0.95;
  text-transform: uppercase;
}
.h-xl { font-family: var(--display); font-size: clamp(3rem, 8vw, 6.5rem); line-height: 0.92; text-transform: uppercase; letter-spacing: 0.005em; }
.h-lg { font-family: var(--display); font-size: clamp(2.4rem, 5vw, 4rem); line-height: 0.98; text-transform: uppercase; letter-spacing: 0.005em; }
.h-md { font-family: var(--display); font-size: clamp(1.8rem, 3.5vw, 2.6rem); line-height: 1.05; text-transform: uppercase; letter-spacing: 0.008em; }

.eyebrow {
  font-family: var(--body);
  font-weight: 600;
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--red);
}
.eyebrow.on-dark { color: var(--amber); }

.lead { font-size: 1.1rem; color: var(--steel-mid); line-height: 1.65; max-width: 580px; }
.lead.on-dark { color: rgba(255,255,255,0.78); }

.accent { color: var(--red); }
.accent-amber { color: var(--amber); }

/* ====== BUTTONS ====== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 1rem 1.6rem;
  font-family: var(--body);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-radius: 4px;
  transition: transform 0.15s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
  position: relative;
  border: 2px solid transparent;
  white-space: nowrap;
  min-height: 48px;
}
.btn:hover { transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn:active { transform: translateY(0); }

.btn-primary { background: var(--red); color: var(--paper); }
.btn-primary:hover { background: var(--red-deep); color: var(--paper); }

.btn-amber { background: var(--amber); color: var(--ink); }
.btn-amber:hover { background: #ffc733; color: var(--ink); }

.btn-ghost-light { border-color: rgba(255,255,255,0.30); color: var(--paper); }
.btn-ghost-light:hover { background: rgba(255,255,255,0.08); color: var(--paper); }

.btn-ghost-dark { border-color: var(--ink); color: var(--ink); background: transparent; }
.btn-ghost-dark:hover { background: var(--ink); color: var(--paper); }

.btn .arrow { transition: transform 0.2s ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* ====== NAV ====== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: padding 0.2s ease;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
/* Pseudo-element holds backdrop-filter so .nav itself doesn't create a
   containing block that would clip position:fixed descendants (drawer). */
.nav::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(15,15,16,0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: -1;
  transition: background 0.2s ease;
}
.nav.scrolled { padding: 0.6rem 0; }
.nav.scrolled::before { background: rgba(15,15,16,0.98); }
.nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  position: relative;
  z-index: 101;
  text-decoration: none;
  color: var(--paper);
}
.nav-brand img { width: 72px; height: 72px; border-radius: 50%; transition: width 0.2s ease, height 0.2s ease; }
.nav.scrolled .nav-brand img { width: 60px; height: 60px; }
.nav-brand .wordmark {
  font-family: var(--display);
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--paper);
  line-height: 1;
}
.nav-brand .wordmark .pro { color: var(--red); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-family: var(--body);
  font-weight: 500;
  font-size: 0.92rem;
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  padding: 0.5rem 0;
  position: relative;
  transition: color 0.2s ease;
}
.nav-links a:not(.btn):hover { color: var(--paper); }
.nav-links a:not(.btn)::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0;
  width: 0; height: 2px;
  background: var(--red);
  transition: width 0.25s ease;
}
.nav-links a:not(.btn):hover::after { width: 100%; }
.nav-links a.btn { color: var(--paper); padding: 0.65rem 1.1rem; min-height: 40px; font-size: 0.82rem; }
.nav-links a.btn:hover { color: var(--paper); }
.nav-links a.btn::after { display: none; }

.nav-price {
  font-family: var(--display);
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--amber);
  margin-right: 0.5rem;
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 101;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--paper);
  transition: transform 0.25s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ====== HERO ====== */
.hero {
  background: var(--ink);
  color: var(--paper);
  padding: 8rem 0 4rem;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(225,29,29,0.18) 0%, transparent 45%),
                    radial-gradient(circle at 90% 80%, rgba(255,184,0,0.10) 0%, transparent 40%);
  z-index: -1;
}
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.06'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: -1;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1.6rem;
  font-size: 0.74rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--amber);
  font-weight: 600;
}
.hero-eyebrow::before {
  content: '';
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--red);
  box-shadow: 0 0 12px var(--red);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}
.hero h1 {
  margin-bottom: 1.4rem;
  color: var(--paper);
}
.hero h1 .red-line { color: var(--red); display: block; }
.hero p.lead { color: rgba(255,255,255,0.78); margin-bottom: 2rem; max-width: 540px; }
.hero-cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  margin-bottom: 2rem;
}
.hero-price {
  font-family: var(--display);
  font-size: 2.2rem;
  color: var(--amber);
  letter-spacing: 0.02em;
}
.hero-price small {
  font-family: var(--body);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  font-weight: 600;
  display: block;
}
.hero-stats {
  display: flex;
  gap: 2.5rem;
  border-top: 1px solid rgba(255,255,255,0.10);
  padding-top: 1.6rem;
}
.hero-stat .v {
  font-family: var(--display);
  font-size: 1.6rem;
  letter-spacing: 0.02em;
  color: var(--paper);
}
.hero-stat .l {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
  font-weight: 600;
}

.hero-image {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transform: perspective(1400px) rotateY(-4deg) rotateX(2deg);
  transition: transform 0.4s ease;
}
.hero-image:hover { transform: perspective(1400px) rotateY(-2deg) rotateX(1deg); }
.hero-image img {
  width: 100%;
  display: block;
  aspect-ratio: 4 / 5;
  object-fit: cover;
}
.hero-image-tag {
  position: absolute;
  top: 1.2rem; left: 1.2rem;
  background: var(--red);
  color: var(--paper);
  padding: 0.45rem 0.9rem;
  font-family: var(--body);
  font-weight: 700;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  border-radius: 3px;
  z-index: 2;
}
.hero-image-caption {
  position: absolute;
  bottom: 1.2rem; left: 1.2rem; right: 1.2rem;
  background: rgba(15,15,16,0.85);
  backdrop-filter: blur(8px);
  padding: 0.8rem 1rem;
  border-radius: 4px;
  font-size: 0.82rem;
  color: var(--paper);
  border-left: 3px solid var(--amber);
}

/* ====== TRUST STRIP ====== */
.trust-strip {
  background: var(--ink-soft);
  color: var(--paper);
  padding: 1.4rem 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.trust-strip .row {
  display: flex;
  justify-content: space-around;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.trust-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  font-weight: 600;
}
.trust-item svg { width: 20px; height: 20px; color: var(--amber); }

/* ====== SECTIONS ====== */
.section { padding: 6rem 0; position: relative; }
.section.dark { background: var(--ink); color: var(--paper); }
.section.warm { background: var(--paper-warm); }
.section-head { max-width: 760px; margin: 0 auto 4rem; text-align: center; }
.section-head h2 { margin-bottom: 1rem; }
.section-head .eyebrow { margin-bottom: 1.2rem; display: inline-block; }
.section-head p { margin: 0 auto; }

/* ====== PROBLEM SECTION ====== */
.problem-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.problem-text h2 { margin-bottom: 1.6rem; color: var(--paper); }
.problem-text h2 .red-line { color: var(--red); display: block; }
.problem-text p { color: rgba(255,255,255,0.78); margin-bottom: 1.2rem; font-size: 1.05rem; }
.problem-text .stat-callout {
  margin-top: 2rem;
  padding: 1.4rem 1.6rem;
  background: rgba(225,29,29,0.08);
  border-left: 4px solid var(--red);
  border-radius: 4px;
}
.problem-text .stat-callout .big {
  font-family: var(--display);
  font-size: 2rem;
  color: var(--amber);
  letter-spacing: 0.02em;
}
.problem-text .stat-callout .sub {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.7);
  font-weight: 600;
  margin-top: 0.3rem;
}
.problem-image {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255,255,255,0.10);
}
.problem-image img { width: 100%; aspect-ratio: 4 / 5; object-fit: cover; }

/* ====== INVENTOR ====== */
.inventor-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}
.inventor-photo {
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--hairline);
  background: var(--paper-warm);
}
.inventor-photo img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  display: block;
}
.inventor-text h2 { margin-bottom: 1.4rem; }
.inventor-text p {
  margin-bottom: 1.2rem;
  font-size: 1.05rem;
  color: var(--steel);
}
.inventor-text .sig {
  font-family: var(--display);
  font-size: 1.4rem;
  letter-spacing: 0.01em;
  color: var(--ink);
  margin-top: 1.4rem;
  margin-bottom: 0;
}

/* ====== HOW IT WORKS ====== */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
  position: relative;
}
.step {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 2rem 1.8rem;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.step:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.step .num {
  font-family: var(--display);
  font-size: 3.5rem;
  color: var(--red);
  line-height: 1;
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}
.step h3 {
  font-family: var(--display);
  font-size: 1.4rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  line-height: 1.1;
  margin-bottom: 0.8rem;
  color: var(--ink);
}
.step p { color: var(--steel-mid); font-size: 0.96rem; }

/* ====== ROI / WHY IT PAYS ====== */
.roi-block {
  background: var(--ink);
  color: var(--paper);
  border-radius: 12px;
  padding: 4rem 3rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.roi-block::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(255,184,0,0.18) 0%, transparent 50%);
}
.roi-block > * { position: relative; z-index: 1; }
.roi-block h2 { color: var(--paper); margin-bottom: 1.6rem; }
.roi-math {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 2rem;
  align-items: center;
  margin: 3rem auto 2rem;
  max-width: 820px;
}
.roi-card {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: 8px;
  padding: 2rem 1.5rem;
}
.roi-card.win { border-color: var(--amber); background: rgba(255,184,0,0.06); }
.roi-card .l {
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.6);
  font-weight: 600;
  margin-bottom: 0.8rem;
}
.roi-card .v {
  font-family: var(--display);
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: 0.02em;
  line-height: 1;
  color: var(--paper);
}
.roi-card.win .v { color: var(--amber); }
.roi-card .sub {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.7);
  margin-top: 0.6rem;
}
.roi-vs {
  font-family: var(--display);
  font-size: 1.8rem;
  color: var(--red);
  letter-spacing: 0.06em;
}
.roi-block p.takeaway {
  max-width: 620px;
  margin: 0 auto;
  color: rgba(255,255,255,0.85);
  font-size: 1.05rem;
  line-height: 1.65;
}

/* ====== SPECS / WHAT'S INCLUDED ====== */
.specs-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.specs-list { list-style: none; }
.specs-list li {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--hairline);
}
.specs-list li:last-child { border-bottom: none; }
.specs-list .ic {
  width: 28px; height: 28px;
  flex-shrink: 0;
  background: var(--red);
  color: var(--paper);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  margin-top: 0.1rem;
}
.specs-list .label {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
  display: block;
  margin-bottom: 0.2rem;
}
.specs-list .desc { color: var(--steel-mid); font-size: 0.95rem; }
.specs-image {
  border-radius: 8px;
  overflow: hidden;
  background: var(--ink-soft);
  padding: 2rem;
}
.specs-image img { width: 100%; aspect-ratio: 4 / 3; object-fit: contain; }

/* ====== VIDEO ====== */
.video-wrap {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--ink);
  box-shadow: var(--shadow-lg);
  aspect-ratio: 16 / 9;
  border: 1px solid var(--hairline);
}
.video-wrap video {
  width: 100%;
  height: 100%;
  display: block;
  background: var(--ink);
  object-fit: cover;
}
.video-wrap::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border: 4px solid transparent;
  border-radius: 12px;
  transition: border-color 0.25s ease;
}
.video-wrap:hover::before { border-color: rgba(225,29,29,0.30); }

/* ====== REVIEWS ====== */
.reviews {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}
.review {
  background: var(--paper);
  border: 1px solid var(--hairline);
  border-radius: 8px;
  padding: 1.8rem;
  position: relative;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}
.review:hover { transform: translateY(-3px); box-shadow: var(--shadow-md); }
.review .stars { color: var(--amber); font-size: 1rem; margin-bottom: 0.8rem; letter-spacing: 0.05em; }
.review .quote { font-size: 1rem; line-height: 1.65; color: var(--ink); margin-bottom: 1.4rem; }
.review .who {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  padding-top: 1rem;
  border-top: 1px solid var(--hairline);
}
.review .who .avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--amber);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: 0.04em;
}
.review .who .name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
}
.review .who .meta {
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.1rem;
}

/* ====== FAQ ====== */
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  border-bottom: 1px solid var(--hairline);
}
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1.4rem 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--ink);
  min-height: 56px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item .toggle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--paper-warm);
  border: 1px solid var(--hairline);
  flex-shrink: 0;
  position: relative;
  transition: background 0.2s ease, transform 0.25s ease;
}
.faq-item .toggle::before,
.faq-item .toggle::after {
  content: '';
  position: absolute;
  top: 50%; left: 50%;
  width: 12px; height: 2px;
  background: var(--ink);
  transform: translate(-50%, -50%);
  transition: transform 0.25s ease;
}
.faq-item .toggle::after { transform: translate(-50%, -50%) rotate(90deg); }
.faq-item[open] .toggle { background: var(--red); }
.faq-item[open] .toggle::before, .faq-item[open] .toggle::after { background: var(--paper); }
.faq-item[open] .toggle::after { transform: translate(-50%, -50%) rotate(0deg); }
.faq-item .answer {
  padding: 0 0 1.6rem;
  color: var(--steel-mid);
  font-size: 1rem;
  line-height: 1.7;
}

/* ====== FINAL CTA ====== */
.final-cta {
  background: linear-gradient(135deg, var(--red) 0%, var(--red-deep) 100%);
  color: var(--paper);
  padding: 6rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.final-cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n2'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n2)' opacity='0.08'/%3E%3C/svg%3E");
}
.final-cta > * { position: relative; z-index: 1; }
.final-cta h2 { color: var(--paper); margin-bottom: 1.2rem; }
.final-cta p {
  max-width: 580px;
  margin: 0 auto 2.2rem;
  font-size: 1.05rem;
  color: rgba(255,255,255,0.92);
}
.final-cta .price {
  font-family: var(--display);
  font-size: 3rem;
  letter-spacing: 0.02em;
  color: var(--paper);
  margin-bottom: 2rem;
}

/* ====== STICKY BUY BAR ====== */
.sticky-buy {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: rgba(15,15,16,0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  color: var(--paper);
  padding: 0.9rem 1.5rem;
  z-index: 90;
  border-top: 1px solid rgba(255,255,255,0.10);
  transform: translateY(100%);
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.sticky-buy.visible { transform: translateY(0); }
.sticky-buy .info {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.sticky-buy .info img { width: 56px; height: 56px; border-radius: 50%; }
.sticky-buy .info .nm {
  font-family: var(--display);
  font-size: 1rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  line-height: 1;
}
.sticky-buy .info .px { color: var(--amber); font-weight: 700; font-size: 0.95rem; margin-top: 0.25rem; }

/* ====== FOOTER ====== */
.foot {
  background: var(--ink);
  color: rgba(255,255,255,0.7);
  padding: 4rem 0 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}
.foot-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}
.foot-brand img { width: 96px; height: 96px; border-radius: 50%; margin-bottom: 1rem; }
.foot-brand .wm {
  font-family: var(--display);
  font-size: 1.6rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--paper);
  line-height: 1;
  margin-bottom: 1rem;
}
.foot-brand .wm .pro { color: var(--red); }
.foot-brand p { font-size: 0.92rem; color: rgba(255,255,255,0.6); line-height: 1.65; }
.foot-col h4 {
  font-family: var(--display);
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: 1rem;
}
.foot-col ul { list-style: none; }
.foot-col li { padding: 0.4rem 0; }
.foot-col a {
  color: rgba(255,255,255,0.7);
  font-size: 0.92rem;
  display: block;
  padding: 0.2rem 0;
  transition: color 0.2s ease;
}
.foot-col a:hover { color: var(--paper); }
.foot-bot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.10);
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.55);
}
.foot-bot .credit a {
  color: var(--amber);
  font-weight: 600;
  border-bottom: 1px solid var(--amber);
  text-decoration: none;
}

/* ====== REVEAL ANIMATIONS ====== */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  will-change: opacity, transform;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; }
}

/* ====== MOBILE ====== */
@media (max-width: 960px) {
  .hero { padding: 7rem 0 3rem; }
  .hero .wrap { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-image { transform: none; max-width: 460px; margin: 0 auto; }
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; }
  .problem-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .inventor-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .specs-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .steps { grid-template-columns: 1fr; }
  .reviews { grid-template-columns: 1fr; }
  .roi-math { grid-template-columns: 1fr; gap: 1.2rem; }
  .roi-vs { font-size: 1.4rem; }
  .foot-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (max-width: 720px) {
  .nav-links {
    position: fixed;
    top: 0; right: 0; bottom: 0;
    height: 100vh;
    height: 100dvh;
    width: min(80vw, 320px);
    background: var(--ink);
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: 5rem 2rem 2rem;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 99;
    border-left: 1px solid rgba(255,255,255,0.08);
    overflow-y: auto;
  }
  .nav.open .nav-links { transform: translateX(0); }
  .nav-links li { width: 100%; }
  .nav-links a { padding: 1rem 0; font-size: 1rem; display: block; }
  .nav-links a.btn {
    margin-top: 1rem;
    padding: 1rem 1.5rem;
    width: 100%;
    justify-content: center;
    font-size: 0.9rem;
    min-height: 50px;
  }
  .nav-price { display: none; }
  .nav-toggle { display: flex; }
  body.nav-open { overflow: hidden; }

  .section { padding: 4rem 0; }
  .section-head { margin-bottom: 2.5rem; }
  .hero { padding: 6rem 0 2.5rem; }
  .roi-block { padding: 3rem 1.5rem; }
  .final-cta { padding: 4rem 0; }
  .foot-grid { grid-template-columns: 1fr; gap: 2rem; }
  .foot-bot { flex-direction: column; align-items: flex-start; text-align: left; }
  .trust-strip .row { gap: 1rem 1.5rem; }
  .trust-item { font-size: 0.7rem; letter-spacing: 0.14em; }
  .sticky-buy { padding: 0.75rem 1rem; gap: 0.6rem; }
  .sticky-buy .info img { width: 48px; height: 48px; }
  .sticky-buy .info .nm { font-size: 0.85rem; }
  .sticky-buy .info .px { font-size: 0.82rem; }
  .sticky-buy .btn { padding: 0.7rem 1rem; font-size: 0.78rem; min-height: 44px; }
  .hero-stat .v { font-size: 1.3rem; }
  .hero-stat .l { font-size: 0.66rem; }
  /* iOS auto-zoom prevention */
  input, textarea, select { font-size: 16px !important; }
  /* Footer + credit tap targets at least 44px */
  .foot-col li { padding: 0.25rem 0; }
  .foot-col a { padding: 0.7rem 0; min-height: 44px; line-height: 1.4; }
  .foot-bot .credit a { padding: 0.35rem 0; display: inline-block; min-height: 32px; }
}

@media (max-width: 380px) {
  .nav-brand .wordmark { display: none; }
  .hero h1 { font-size: 2.4rem; }
  .h-lg { font-size: 2rem; }
}