.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  height: var(--header-h);
  display: flex;
  align-items: center;
}

.site-header.is-solid {
  mix-blend-mode: normal;
  background: color-mix(in srgb, var(--void) 82%, transparent);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--line);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.logo {
  display: flex;
  align-items: baseline;
  gap: 2px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.18em;
  color: var(--signal);
}

.logo .dot {
  width: 5px;
  height: 5px;
  background: var(--copper);
  border-radius: 50%;
  margin-left: 2px;
  transform: translateY(-7px);
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: clamp(20px, 3vw, 40px);
}

.nav-link {
  font-size: 0.7rem;
  color: var(--signal);
  opacity: 0.78;
  transition: opacity var(--duration-ui) var(--ease), color var(--duration-ui) var(--ease);
}

.nav-link:hover,
.nav-link.is-active {
  opacity: 1;
  color: var(--copper-bright);
}

.nav-cta {
  opacity: 1;
  padding: 8px 14px;
  border: 1px solid color-mix(in srgb, var(--copper) 55%, transparent);
  color: var(--copper-bright);
}

.menu-toggle {
  display: none;
  width: 44px;
  height: 44px;
  position: relative;
  z-index: 41;
}

.menu-toggle span {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 1px;
  background: var(--signal);
  transition: transform 400ms var(--ease), opacity 300ms var(--ease);
}

.menu-toggle span:first-child { top: 18px; }
.menu-toggle span:last-child { top: 26px; }

body.menu-open .menu-toggle span:first-child {
  transform: translateY(4px) rotate(45deg);
}

body.menu-open .menu-toggle span:last-child {
  transform: translateY(-4px) rotate(-45deg);
}

.nav-mobile {
  position: fixed;
  inset: 0;
  z-index: 28;
  background: var(--void);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px var(--pad-x) 48px;
  transform: translateY(-101%);
  transition: transform 700ms var(--ease);
}

body.menu-open .nav-mobile {
  transform: translateY(0);
}

.nav-mobile a {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 10vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.04em;
  line-height: 1.08;
  color: var(--signal);
  opacity: 0;
  transform: translateY(24px);
}

body.menu-open .nav-mobile a {
  opacity: 1;
  transform: none;
  transition: opacity 700ms var(--ease), transform 700ms var(--ease);
}

body.menu-open .nav-mobile a:nth-child(1) { transition-delay: 80ms; }
body.menu-open .nav-mobile a:nth-child(2) { transition-delay: 140ms; }
body.menu-open .nav-mobile a:nth-child(3) { transition-delay: 200ms; }
body.menu-open .nav-mobile a:nth-child(4) { transition-delay: 260ms; }
body.menu-open .nav-mobile a:nth-child(5) { transition-delay: 320ms; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 22px;
  font-size: 0.72rem;
  border: 1px solid var(--copper);
  color: var(--copper);
  background: transparent;
  transition: background var(--duration-move) var(--ease), color var(--duration-move) var(--ease), transform var(--duration-move) var(--ease), border-color var(--duration-move) var(--ease);
  will-change: transform;
}

.btn:hover {
  background: var(--copper);
  color: var(--void);
}

.btn-fill {
  background: var(--copper);
  color: var(--void);
}

.btn-fill:hover {
  background: var(--copper-bright);
  border-color: var(--copper-bright);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--paper);
}

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

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  font-size: 0.68rem;
  border: 1px solid var(--line-strong);
  color: var(--paper);
  background: color-mix(in srgb, var(--void) 40%, transparent);
  backdrop-filter: blur(8px);
  transition: border-color var(--duration-move) var(--ease), transform 700ms var(--ease), background var(--duration-move) var(--ease);
}

.chip:hover {
  border-color: var(--copper);
  color: var(--copper-bright);
}

.chip .swatch {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--copper);
}

.chip[data-product="invoicehelper"] .swatch { background: var(--sage); }
.chip[data-product="knot"] .swatch { background: var(--rose); }
.chip[data-product="castme"] .swatch { background: var(--amber); }
.chip[data-product="weview"] .swatch { background: var(--slate); }

.product-card {
  display: grid;
  gap: 18px;
  padding: 28px 0;
  border-top: 1px solid var(--line);
  color: inherit;
  transition: padding-left 700ms var(--ease);
}

.product-card:last-child {
  border-bottom: 1px solid var(--line);
}

.product-card:hover {
  padding-left: 12px;
}

.product-card .index {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--steel);
  letter-spacing: 0.12em;
}

.product-card h3 {
  font-size: clamp(1.8rem, 4vw, 3rem);
}

.product-card p {
  color: var(--steel-bright);
  max-width: 36rem;
}

.product-card .meta {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}

.audience-card,
.step,
.stat,
.feature-block {
  border-top: 1px solid var(--line);
  padding-top: 20px;
}

.audience-card p,
.step p,
.feature-block p {
  color: var(--steel-bright);
  margin-top: 10px;
}

.stat-value {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  letter-spacing: -0.04em;
  color: var(--signal);
}

.stat-label {
  display: block;
  margin-top: 8px;
  font-size: 0.68rem;
  color: var(--steel);
}

.cta-band {
  background: var(--void-elevated);
  border-block: 1px solid var(--line);
}

.quote {
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--signal);
}

.quote cite {
  display: block;
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-style: normal;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
}

.site-footer {
  position: relative;
  z-index: 1;
  padding: 72px 0 32px;
  border-top: 1px solid var(--line);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-label {
  font-size: 0.68rem;
  color: var(--steel);
  margin-bottom: 16px;
}

.site-footer a {
  display: block;
  color: var(--steel-bright);
  margin-bottom: 8px;
  transition: color var(--duration-ui) var(--ease);
}

.site-footer a:hover {
  color: var(--copper);
}

.footer-brand p {
  color: var(--steel);
  margin-top: 12px;
  max-width: 22rem;
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 48px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--steel);
  text-transform: uppercase;
}

.footer-legal a {
  display: inline;
  color: var(--steel);
}

.form {
  display: grid;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-field {
  display: grid;
  gap: 8px;
}

.form-label {
  font-size: 0.68rem;
  color: var(--steel);
}

.form input,
.form select,
.form textarea {
  width: 100%;
  border-bottom: 1px solid var(--line-strong);
  padding: 12px 0;
  color: var(--paper);
  transition: border-color var(--duration-ui) var(--ease);
}

.form textarea {
  min-height: 140px;
  resize: vertical;
}

.form input:focus,
.form select:focus,
.form textarea:focus {
  outline: none;
  border-bottom-color: var(--copper);
}

.form .error {
  border-bottom-color: #c96a63;
}

.form-note {
  font-size: 0.88rem;
  color: var(--steel);
}

.support-card {
  border: 1px solid var(--line);
  padding: 28px;
  background: var(--void-elevated);
}

.support-card a.email {
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 3.2vw, 2.2rem);
  letter-spacing: -0.03em;
  color: var(--copper);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 16px 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  font-family: var(--font-display);
  font-size: 1.1rem;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  color: var(--copper);
  font-family: var(--font-mono);
}

.faq details[open] summary::after {
  content: "–";
}

.faq p {
  color: var(--steel-bright);
  margin-top: 10px;
  max-width: 40rem;
}

.cookie-banner {
  position: fixed;
  right: var(--pad-x);
  bottom: 20px;
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: min(420px, calc(100% - 2 * var(--pad-x)));
  padding: 16px 18px;
  background: var(--void-elevated);
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow-deep);
}

.cookie-banner.is-on {
  display: flex;
}

.cookie-banner p {
  font-size: 0.9rem;
  color: var(--steel-bright);
}

.apple-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.apple-table th,
.apple-table td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}

.apple-table th {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--steel);
}

.apple-table a {
  color: var(--copper);
  word-break: break-all;
}

.device-stage {
  position: relative;
  min-height: 280px;
  border: 1px solid var(--line);
  background:
    radial-gradient(ellipse at 30% 20%, color-mix(in srgb, var(--accent, var(--copper)) 18%, transparent), transparent 55%),
    var(--void-elevated);
  overflow: hidden;
}

.device-stage .pane {
  position: absolute;
  inset: 18% 12% auto 12%;
  height: 64%;
  border: 1px solid var(--line-strong);
  background: color-mix(in srgb, var(--void) 70%, transparent);
  backdrop-filter: blur(8px);
  padding: 18px;
  transform: perspective(800px) rotateX(8deg) rotateY(-12deg);
  transition: transform 700ms var(--ease);
}

.device-stage:hover .pane {
  transform: perspective(800px) rotateX(4deg) rotateY(-4deg) scale(1.04);
}

.pane-row {
  height: 8px;
  background: var(--line-strong);
  margin-bottom: 10px;
}

.pane-row.short { width: 42%; }
.pane-row.mid { width: 68%; }
.pane-bar {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 18px;
  height: 4px;
  background: var(--accent, var(--copper));
  opacity: 0.85;
}

.work-card {
  display: block;
  border-top: 1px solid var(--line);
  padding: 32px 0 40px;
}

.work-card .device-stage {
  margin-top: 24px;
  min-height: 320px;
}

.legal-meta {
  font-size: 0.68rem;
  color: var(--steel);
  margin-top: 12px;
}

@media (max-width: 980px) {
  .nav-desktop { display: none; }
  .menu-toggle { display: block; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .cookie-banner {
    flex-direction: column;
    align-items: stretch;
  }
}

@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
  .product-card:hover { padding-left: 0; }
}