.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: rgba(12, 12, 15, 0.94);
  border-bottom: 1px solid transparent;
}

.site-header.is-stuck {
  border-bottom-color: var(--border-dark);
  background: rgba(12, 12, 15, 0.92);
}

.header-inner {
  width: min(var(--wide), calc(100% - (var(--gutter) * 2)));
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 650;
  letter-spacing: -0.03em;
  flex: 0 0 auto;
}

img.logo-mark {
  width: 2.65rem;
  height: 2.65rem;
  display: block;
  border-radius: 0.55rem;
  flex: 0 0 auto;
}

.logo-text {
  font-size: 1.05rem;
  line-height: 1;
}

.primary-nav {
  display: none;
  margin-left: auto;
}

.primary-nav > ul {
  display: flex;
  align-items: center;
  gap: 0.15rem;
}

.primary-nav a,
.nav-drop > summary {
  display: inline-flex;
  align-items: center;
  min-height: 2.5rem;
  padding: 0 0.7rem;
  border-radius: 999px;
  color: var(--text-light);
  font-size: 0.95rem;
  list-style: none;
}

.nav-drop > summary::-webkit-details-marker {
  display: none;
}

.primary-nav a:hover,
.nav-drop > summary:hover,
.nav-drop[open] > summary {
  background: rgba(255, 255, 255, 0.06);
}

.nav-drop {
  position: relative;
}

.nav-drop.align-end .dropdown {
  left: auto;
  right: 0;
}

.dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 17.5rem;
  padding: 0.45rem;
  border-radius: 1.1rem;
  background: rgba(21, 21, 26, 0.96);
  border: 1px solid var(--border-dark);
  box-shadow: var(--shadow);
}

.nav-drop[open] > .dropdown,
.nav-drop:focus-within > .dropdown {
  display: grid;
}

.dropdown a {
  border-radius: 0.75rem;
  padding: 0.65rem 0.8rem;
  justify-content: flex-start;
  color: var(--text-light);
}

.dropdown a:hover {
  background: rgba(128, 108, 255, 0.14);
}

.header-cta {
  margin-left: auto;
}

.menu-toggle {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 2.6rem;
  padding: 0 0.9rem;
  border-radius: 999px;
  border: 1px solid var(--border-dark);
  color: var(--text-light);
}

.mobile-nav {
  display: block;
}

.mobile-nav > summary {
  list-style: none;
}

.mobile-nav > summary::-webkit-details-marker {
  display: none;
}

.mobile-panel {
  position: fixed;
  z-index: 60;
  left: 0;
  right: 0;
  top: var(--header-h);
  bottom: 0;
  overflow: auto;
  padding: 0.5rem var(--gutter) 2rem;
  background: #0c0c0f;
  border-top: 1px solid var(--border-dark);
}

.mobile-panel a,
.mobile-sub > summary {
  display: flex;
  align-items: center;
  min-height: 2.8rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border-dark);
  font-size: 1.05rem;
}

.mobile-sub > summary {
  list-style: none;
  cursor: pointer;
  color: var(--accent-soft);
}

.mobile-sub > summary::-webkit-details-marker {
  display: none;
}

.mobile-sub a {
  padding-left: 0.8rem;
  color: var(--text-light);
  font-size: 1rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  min-height: 3rem;
  padding: 0.7rem 1.2rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  letter-spacing: -0.015em;
  text-align: center;
  line-height: 1.2;
}

.btn-primary {
  background: var(--text-light);
  color: var(--text-dark);
}

.btn-primary:hover {
  background: #fff;
}

.section-paper .btn-primary {
  background: var(--text-dark);
  color: var(--text-light);
}

.btn-ghost {
  background: transparent;
  color: inherit;
  border-color: var(--border);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.05);
}

.section-paper .btn-ghost:hover {
  background: rgba(17, 17, 20, 0.04);
}

.btn-small {
  min-height: 2.6rem;
  padding: 0.45rem 0.95rem;
  font-size: 0.92rem;
}

.crumbs {
  padding-top: 1.25rem;
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.5rem;
  color: var(--muted-light);
  font-size: 0.92rem;
}

.crumbs li {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.crumbs li:not(:last-child)::after {
  content: "/";
  color: rgba(255, 255, 255, 0.35);
}

.crumbs a {
  color: var(--accent-soft);
}

.frame {
  display: block;
  aspect-ratio: 16 / 10;
  border-radius: 28px;
  background: var(--surface);
}

.frame picture,
.frame img {
  display: block;
  width: 100%;
  height: 100%;
}

.frame img {
  object-fit: cover;
  border-radius: 28px;
}

.frame-portrait {
  aspect-ratio: 4 / 5;
}

.card,
.service-card,
.metric,
.step,
.faq-item,
.note {
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
}

.section-paper .card,
.section-paper .service-card,
.section-paper .step,
.section-paper .faq-item,
.section-paper .note {
  background: var(--white);
}

.card,
.service-card {
  padding: 1.25rem 1.3rem 1.35rem;
  display: grid;
  gap: 0.55rem;
  align-content: start;
}

.service-card .index {
  font-family: var(--serif);
  font-style: italic;
  color: var(--accent-soft);
  font-size: 1.35rem;
}

.section-paper .service-card .index {
  color: var(--accent-deep);
}

.card p,
.service-card p,
.step p {
  color: var(--muted);
}

.card h3 a,
.service-card h3 a,
.related a {
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.metric {
  padding: 0.9rem 1rem;
  background: rgba(12, 12, 15, 0.72);
  border-color: rgba(255, 255, 255, 0.14);
  backdrop-filter: blur(10px);
}

.metric span {
  display: block;
  color: var(--muted-light);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.metric strong {
  display: block;
  margin-top: 0.2rem;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.hero-visual {
  display: grid;
  gap: 0.8rem;
}

.hero-metrics {
  display: grid;
  gap: 0.7rem;
}

.step {
  padding: 1.2rem 1.2rem 1.3rem;
  display: grid;
  gap: 0.45rem;
}

.step b {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
  font-size: 1.7rem;
  color: var(--accent-soft);
}

.section-paper .step b {
  color: var(--accent-deep);
}

.faq-list {
  display: grid;
  gap: 0.75rem;
}

.faq-item {
  padding: 0.2rem 1.1rem;
}

.faq-item summary {
  cursor: pointer;
  min-height: 3.4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  list-style: none;
}

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

.faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  color: var(--accent-soft);
  font-size: 1.4rem;
  line-height: 1;
}

.section-paper .faq-item summary::after {
  color: var(--accent-deep);
}

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

.faq-item .faq-answer {
  padding-bottom: 1rem;
  color: var(--muted);
}

.note {
  padding: 1rem 1.1rem;
}

.related {
  display: grid;
  gap: 0.7rem;
}

.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  min-height: 2.3rem;
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
  font-size: 0.95rem;
}

.section-paper .pill {
  background: rgba(17, 17, 20, 0.03);
}

.site-footer {
  padding-top: clamp(3rem, 6vw, 5rem);
  border-top: 1px solid var(--border-dark);
  background: #09090c;
}

.footer-brand {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 2rem;
  max-width: 36rem;
}

.footer-brand p {
  color: var(--muted-light);
}

.footer-grid {
  display: grid;
  gap: 1.5rem 2rem;
  padding-bottom: 2.5rem;
}

.footer-label {
  font-size: 0.82rem;
  font-weight: 650;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted-light);
  margin-bottom: 0.8rem;
}

.footer-col ul {
  display: grid;
  gap: 0.45rem;
}

.footer-col a {
  color: var(--text-light);
}

.footer-base {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  padding-block: 1.2rem 1.6rem;
  border-top: 1px solid var(--border-dark);
  color: var(--muted-light);
  font-size: 0.92rem;
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem 1.1rem;
}

.form-grid {
  display: grid;
  gap: 1rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field label {
  font-weight: 600;
  letter-spacing: -0.02em;
}

.field input,
.field select,
.field textarea {
  width: 100%;
  min-height: 3rem;
  padding: 0.7rem 0.85rem;
  border-radius: 14px;
  border: 1px solid var(--border-light);
  background: var(--white);
  color: var(--text-dark);
}

.field textarea {
  min-height: 9rem;
  resize: vertical;
}

.field .error {
  color: #8d1d32;
  font-size: 0.92rem;
}

.form-error,
.form-result {
  padding: 1rem 1.1rem;
  border-radius: 16px;
}

.form-error {
  background: #fdecef;
  color: #6d1526;
}

.form-result {
  background: #eef6ef;
  color: #12331c;
}

.form-result h2,
.form-error h2 {
  font-size: 1.2rem;
  margin-bottom: 0.4rem;
}

.summary-list {
  display: grid;
  gap: 0.35rem;
  margin-top: 0.8rem;
}

.summary-list div {
  display: grid;
  gap: 0.1rem;
}

.summary-list dt {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.monitor {
  border-radius: 22px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(21, 21, 26, 0.9);
  padding: 0.9rem;
  display: grid;
  gap: 0.55rem;
}

.monitor header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted-light);
  font-size: 0.82rem;
}

.pulse {
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: #9d93ff;
  box-shadow: 0 0 0 0 rgba(157, 147, 255, 0.7);
  animation: pulse 2.4s ease-out infinite;
}

.monitor ul {
  display: grid;
  gap: 0.4rem;
}

.monitor li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.55rem 0.65rem;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
  font-size: 0.92rem;
}

.monitor em {
  font-style: normal;
  color: var(--accent-soft);
}

@keyframes pulse {
  70% {
    box-shadow: 0 0 0 8px rgba(157, 147, 255, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(157, 147, 255, 0);
  }
}

.caption {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.9rem;
}