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

:root {
  --black: #0a0a0a;
  --ink: #111111;
  --off-white: #f4f2ec;
  --warm-white: #faf8f3;
  --pale-gray: #e8e6e0;
  --lime: #c6ff3d;
  --lime-deep: #b4f024;
  --muted: #5c5c5c;
  --border: rgba(0, 0, 0, 0.12);
  --max: 1120px;
  --header-h: 4.25rem;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--warm-white);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1,
h2,
h3,
p {
  margin: 0;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 1000;
  padding: 0.75rem 1rem;
  background: var(--black);
  color: var(--warm-white);
  border-radius: 0.35rem;
}

.skip-link:focus {
  top: 1rem;
}

:focus-visible {
  outline: 2px solid var(--black);
  outline-offset: 3px;
}

.btn:focus-visible,
.btn-copy:focus-visible,
.nav-toggle:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

/* ---------- Header ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 248, 243, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand img {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  object-fit: cover;
}

.site-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem 1.15rem;
}

.site-nav a {
  font-size: 0.95rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  padding: 0.35rem 0;
  transition: opacity 0.2s var(--ease);
}

.site-nav a:hover {
  opacity: 0.65;
}

.nav-chart {
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.nav-x {
  font-weight: 600;
}

.nav-buy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.5rem;
  padding: 0.45rem 1.1rem !important;
  background: var(--black);
  color: var(--warm-white) !important;
  border-radius: 999px;
  opacity: 1 !important;
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.nav-buy:hover {
  background: #222;
  opacity: 1 !important;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--border);
  border-radius: 0.5rem;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
  padding: 0;
}

.nav-toggle-bar {
  display: block;
  width: 1.1rem;
  height: 1.5px;
  background: var(--black);
  transition: transform 0.25s var(--ease);
}

.nav-open .nav-toggle-bar:first-child {
  transform: translateY(2.5px) rotate(45deg);
}

.nav-open .nav-toggle-bar:last-child {
  transform: translateY(-2.5px) rotate(-45deg);
}

/* ---------- Shared ---------- */

.section {
  padding: clamp(4.5rem, 10vw, 7.5rem) 1.25rem;
}

.section-inner {
  max-width: var(--max);
  margin: 0 auto;
}

.section-kicker {
  font-size: 0.85rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.5rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease), transform 0.2s var(--ease);
}

.btn-primary {
  background: var(--black);
  color: var(--warm-white);
}

.btn-primary:hover {
  background: #222;
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: var(--black);
  border-color: var(--black);
}

.btn-secondary:hover {
  background: var(--black);
  color: var(--warm-white);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.ticker {
  font-weight: 700;
  letter-spacing: 0.04em;
}

.ca-block {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  margin-top: 1.75rem;
  padding: 0.85rem 1rem;
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--border);
  border-radius: 0.75rem;
  max-width: 100%;
}

.ca-block-dark {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
  color: var(--warm-white);
}

.ca-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  flex-shrink: 0;
}

.ca-block-dark .ca-label {
  color: rgba(250, 248, 243, 0.55);
}

.ca-value {
  flex: 1 1 12rem;
  min-width: 0;
  font-size: clamp(0.72rem, 2.1vw, 0.88rem);
  line-height: 1.45;
  overflow-wrap: anywhere;
  word-break: break-all;
  color: var(--ink);
}

.ca-block-dark .ca-value {
  color: var(--warm-white);
}

.btn-copy {
  flex-shrink: 0;
  min-height: 2.4rem;
  min-width: 4.5rem;
  padding: 0.4rem 0.95rem;
  border: 1.5px solid var(--black);
  border-radius: 999px;
  background: var(--warm-white);
  color: var(--black);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.btn-copy:hover {
  background: var(--black);
  color: var(--warm-white);
}

.btn-copy.is-copied {
  background: var(--lime);
  border-color: var(--black);
  color: var(--black);
}

.ca-block-dark .btn-copy {
  background: transparent;
  color: var(--warm-white);
  border-color: rgba(250, 248, 243, 0.45);
}

.ca-block-dark .btn-copy:hover,
.ca-block-dark .btn-copy.is-copied {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--black);
}

/* ---------- Hero ---------- */

.hero {
  padding: clamp(3rem, 7vw, 5.5rem) 1.25rem clamp(3.5rem, 8vw, 6rem);
  background:
    radial-gradient(ellipse 80% 60% at 90% 20%, rgba(198, 255, 61, 0.18), transparent 55%),
    var(--warm-white);
}

.hero-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 1.25rem;
}

.hero h1 {
  font-size: clamp(2.6rem, 7vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
  font-weight: 700;
  max-width: 12ch;
}

.hero-sub {
  margin-top: 1rem;
  font-size: clamp(1.25rem, 3vw, 1.85rem);
  letter-spacing: -0.03em;
  color: var(--ink);
}

.hero-ticker {
  margin: 1.25rem 0 1.75rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.hero-ticker .ticker {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  background: var(--lime);
  color: var(--black);
  border-radius: 999px;
  font-size: 0.85rem;
}

.hero-visual {
  display: flex;
  justify-content: center;
}

.hero-product {
  width: min(100%, 28rem);
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background: var(--black);
  box-shadow:
    0 30px 60px rgba(0, 0, 0, 0.18),
    0 0 0 1px rgba(0, 0, 0, 0.06);
}

.hero-product img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Campaign banner ---------- */

.campaign {
  padding: 0 1.25rem 0;
  background: var(--warm-white);
}

.campaign-figure {
  max-width: var(--max);
  margin: 0 auto;
  border-radius: 1.25rem;
  overflow: hidden;
  background: var(--lime);
  aspect-ratio: 16 / 9;
}

.campaign-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* ---------- Product ---------- */

.product {
  background: var(--off-white);
}

.product-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  gap: clamp(2rem, 6vw, 5rem);
  align-items: center;
}

.product-text h2 {
  font-size: clamp(2.2rem, 5.5vw, 3.75rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  max-width: 12ch;
}

.feature-list {
  margin-top: 2rem;
  display: grid;
  gap: 0.55rem;
}

.feature-list li {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
  letter-spacing: -0.01em;
}

.product-punch {
  margin-top: 2rem;
  font-size: clamp(1.35rem, 3vw, 1.75rem);
  font-weight: 600;
  letter-spacing: -0.03em;
}

.product-philosophy {
  margin-top: 0.5rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
}

.product-image {
  width: min(100%, 22rem);
  margin-inline: auto;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background: var(--black);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Sequence ---------- */

.sequence {
  background: var(--black);
  color: var(--warm-white);
}

.sequence .section-kicker {
  color: rgba(250, 248, 243, 0.45);
}

.sequence-list {
  display: grid;
  gap: clamp(0.75rem, 2vw, 1.25rem);
}

.sequence-list li {
  font-size: clamp(2.4rem, 8vw, 5.5rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.05em;
  color: rgba(250, 248, 243, 0.35);
}

.sequence-list .sequence-final {
  color: var(--lime);
  font-weight: 700;
}

/* ---------- One letter ---------- */

.one-letter {
  background: var(--warm-white);
}

.one-letter-inner {
  display: grid;
  grid-template-columns: minmax(0, 0.7fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
}

.letter-mark {
  font-size: clamp(8rem, 28vw, 16rem);
  font-weight: 300;
  line-height: 0.8;
  letter-spacing: -0.08em;
  color: var(--black);
  text-align: center;
  user-select: none;
}

.letter-copy h2 {
  font-size: clamp(1.85rem, 4.5vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
  max-width: 14ch;
}

.letter-copy p {
  margin-top: 1.25rem;
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--muted);
  max-width: 28ch;
}

.letter-end {
  font-weight: 700 !important;
  color: var(--ink) !important;
  font-size: clamp(1.5rem, 3.5vw, 2rem) !important;
  letter-spacing: -0.03em;
}

/* ---------- Held ---------- */

.held {
  background: var(--off-white);
  text-align: center;
}

.held-inner {
  max-width: 44rem;
}

.held h2 {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
}

.held-stage {
  margin: clamp(2.5rem, 6vw, 4rem) auto;
  width: min(100%, 26rem);
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background: var(--black);
  box-shadow: 0 40px 80px rgba(0, 0, 0, 0.12);
}

.held-stage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.held-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.75rem;
}

.held-list li {
  font-size: clamp(1.05rem, 2.2vw, 1.2rem);
  color: var(--muted);
}

.held-end {
  margin-top: 1.5rem;
  font-size: clamp(1.25rem, 2.8vw, 1.5rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

/* ---------- Pair ---------- */

.pair {
  background: var(--warm-white);
}

.pair h2 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  line-height: 1.08;
  letter-spacing: -0.04em;
  max-width: 16ch;
  margin-bottom: clamp(2rem, 5vw, 3.5rem);
}

.pair-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 2.5rem;
}

.pair-side {
  padding: clamp(1.5rem, 4vw, 2.5rem);
  background: var(--off-white);
  border-radius: 1rem;
  min-width: 0;
}

.pair-name {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.pair-role {
  margin-top: 0.4rem;
  font-size: 1.1rem;
  color: var(--muted);
}

.pair-divider {
  font-size: 1.75rem;
  font-weight: 300;
  color: var(--muted);
}

.pair-body {
  font-size: clamp(1.1rem, 2.4vw, 1.35rem);
  max-width: 38ch;
  letter-spacing: -0.015em;
  line-height: 1.45;
}

.pair-note {
  margin-top: 1rem;
  font-size: 1rem;
  color: var(--muted);
}

/* ---------- Conviction ---------- */

.conviction {
  background: var(--lime);
  padding: clamp(5rem, 14vw, 9rem) 1.25rem;
}

.conviction-inner {
  text-align: center;
}

.conviction h2 {
  display: flex;
  flex-direction: column;
  gap: 0.15em;
  font-size: clamp(2.6rem, 8vw, 5.5rem);
  line-height: 1.02;
  letter-spacing: -0.05em;
  font-weight: 700;
}

.conviction-sub {
  margin-top: 1.75rem;
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  letter-spacing: -0.01em;
  color: rgba(0, 0, 0, 0.55);
}

/* ---------- Final CTA ---------- */

.final-cta {
  background: var(--black);
  color: var(--warm-white);
}

.final-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: center;
}

.final-copy h2 {
  font-size: clamp(3rem, 8vw, 5.5rem);
  line-height: 0.95;
  letter-spacing: -0.05em;
}

.final-sub {
  margin-top: 0.75rem;
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  letter-spacing: -0.025em;
  color: rgba(250, 248, 243, 0.7);
}

.final-meta {
  margin: 1.25rem 0 1.75rem;
  font-size: 0.95rem;
  color: rgba(250, 248, 243, 0.45);
}

.final-cta .btn-primary {
  background: var(--lime);
  color: var(--black);
}

.final-cta .btn-primary:hover {
  background: var(--lime-deep);
}

.final-cta .btn-secondary {
  color: var(--warm-white);
  border-color: rgba(250, 248, 243, 0.4);
}

.final-cta .btn-secondary:hover {
  background: var(--warm-white);
  color: var(--black);
  border-color: var(--warm-white);
}

.final-visual {
  width: min(100%, 20rem);
  margin-inline: auto;
  aspect-ratio: 1;
  border-radius: 50%;
  overflow: hidden;
  background: #111;
}

.final-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Footer ---------- */

.site-footer {
  background: var(--black);
  color: rgba(250, 248, 243, 0.7);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 2.5rem 1.25rem 3rem;
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.footer-brand img {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  object-fit: cover;
}

.footer-name {
  color: var(--warm-white);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.footer-meta {
  font-size: 0.85rem;
  margin-top: 0.15rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
}

.footer-nav a {
  color: var(--warm-white);
  font-weight: 500;
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.footer-nav a:hover {
  color: var(--lime);
}

.footer-disclaimer {
  font-size: 0.85rem;
  line-height: 1.55;
  max-width: 42rem;
  color: rgba(250, 248, 243, 0.45);
}

/* ---------- Motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  .hero-product,
  .held-stage,
  .product-image {
    transition: transform 0.5s var(--ease);
  }

  .hero-product:hover,
  .held-stage:hover,
  .product-image:hover {
    transform: scale(1.02);
  }
}

/* ---------- Tablet ---------- */

@media (max-width: 1199px) {
  .hero-grid,
  .product-inner,
  .final-inner,
  .one-letter-inner {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    order: -1;
  }

  .hero-product {
    width: min(100%, 22rem);
  }

  .hero h1 {
    max-width: none;
  }

  .product-image {
    width: min(100%, 18rem);
  }

  .letter-mark {
    font-size: clamp(6rem, 22vw, 10rem);
  }

  .one-letter-inner {
    text-align: center;
  }

  .letter-copy p {
    margin-inline: auto;
  }

  .letter-copy h2 {
    margin-inline: auto;
  }
}

/* ---------- Mobile nav + layout ---------- */

@media (max-width: 767px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.5rem 1.25rem 1.25rem;
    background: rgba(250, 248, 243, 0.98);
    border-bottom: 1px solid var(--border);
  }

  .nav-open .site-nav {
    display: flex;
  }

  .site-nav a {
    padding: 0.9rem 0.25rem;
    border-bottom: 1px solid var(--border);
  }

  .site-nav .nav-buy {
    margin-top: 0.75rem;
    border-bottom: none;
    width: 100%;
  }

  .hero {
    padding-top: 2.25rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .ca-block {
    align-items: flex-start;
  }

  .btn-copy {
    width: 100%;
  }

  .campaign-figure {
    aspect-ratio: 4 / 3;
    border-radius: 0.85rem;
  }

  .pair-grid {
    grid-template-columns: 1fr;
    gap: 0.85rem;
  }

  .pair-divider {
    text-align: center;
    line-height: 1;
  }

  .held-list {
    flex-direction: column;
    gap: 0.4rem;
  }

  .final-cta .hero-actions .btn {
    width: 100%;
  }

  .sequence-list li {
    font-size: clamp(2.2rem, 12vw, 3.5rem);
  }
}

@media (max-width: 430px) {
  .header-inner {
    padding-inline: 1rem;
  }

  .section {
    padding-inline: 1rem;
  }

  .hero,
  .campaign {
    padding-inline: 1rem;
  }

  .hero-product {
    width: min(100%, 16.5rem);
  }

  .brand span {
    font-size: 1rem;
  }
}

@media (max-width: 360px) {
  .hero h1 {
    font-size: 2.25rem;
  }

  .conviction h2 {
    font-size: 2.25rem;
  }
}