:root {
  --bg-base: #12172B;
  --bg-surface: #1C2340;
  --bg-surface-dim: #171C34;
  --accent: #FFB13C;
  --accent-teal: #4FD1C5;
  --text-main: #F5F3EE;
  --text-muted: #9AA0B4;
  --border-soft: rgba(245, 243, 238, 0.1);
}

[data-theme="light"] {
  --bg-base: #F5F3EE;
  --bg-surface: #FFFFFF;
  --bg-surface-dim: #ECEAE3;
  --accent: #C97A0F;
  --accent-teal: #1C8C7F;
  --text-main: #1B1F1D;
  --text-muted: #5B6072;
  --border-soft: rgba(27, 31, 29, 0.12);
}

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

body {
  background: var(--bg-base);
  color: var(--text-main);
  font-family: 'Inter', sans-serif;
  line-height: 1.5;
}

h1, h2, h3 { font-family: 'Space Grotesk', sans-serif; }

.mono { font-family: 'IBM Plex Mono', monospace; }

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(18, 23, 43, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 72px;
}

.logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.4rem;
}

.logo-dot { color: var(--accent); }

.nav { display: flex; gap: 32px; }

.nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.nav a:hover, .nav a:focus-visible { color: var(--text-main); }

/* Hero */
.hero { padding: 96px 0 80px; }

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 40px;
}

.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--accent);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: 20px;
}

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

.hero-sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 46ch;
  margin-bottom: 32px;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #1A1305;
  font-weight: 600;
  padding: 14px 28px;
  border-radius: 8px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn-primary:hover, .btn-primary:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 177, 60, 0.25);
}

/* Network graphic */
.network-svg { width: 100%; max-width: 420px; display: block; margin: 0 auto; }

.network-lines line {
  stroke: var(--border-soft);
  stroke-width: 1.5;
  stroke-dasharray: 4 5;
  animation: dash 20s linear infinite;
}

@keyframes dash { to { stroke-dashoffset: -200; } }

.node-core {
  fill: var(--bg-surface);
  stroke: var(--accent);
  stroke-width: 2;
}

.node-core-label {
  fill: var(--accent);
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  text-anchor: middle;
}

.node {
  fill: var(--bg-surface);
  stroke: var(--accent-teal);
  stroke-width: 2;
}

.node-dim {
  stroke: var(--text-muted);
  opacity: 0.6;
}

.node-label {
  fill: var(--text-main);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 13px;
  text-anchor: middle;
}

.node-label-dim { fill: var(--text-muted); }

/* Products */
.products { padding: 80px 0; background: var(--bg-surface-dim); }

.products h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 40px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.product-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 28px;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.product-card:hover { transform: translateY(-4px); border-color: var(--accent); }

.product-card-dim { opacity: 0.6; }
.product-card-dim:hover { transform: none; border-color: var(--border-soft); }

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  font-size: 0.8rem;
}

.status {
  padding: 4px 10px;
  border-radius: 100px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
}

.status-live { background: rgba(79, 209, 197, 0.15); color: var(--accent-teal); }
.status-soon { background: rgba(154, 160, 180, 0.15); color: var(--text-muted); }

.product-card h3 { font-size: 1.3rem; margin-bottom: 10px; }

.product-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 20px;
}

.card-link { color: var(--accent); font-weight: 500; font-size: 0.95rem; }
.card-link:hover { text-decoration: underline; }

/* About */
.about { padding: 96px 0; }
.about-inner { max-width: 640px; }
.about h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 20px; }
.about p { color: var(--text-muted); font-size: 1.05rem; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.logo-small { font-size: 1.1rem; }

.site-footer p { color: var(--text-muted); font-size: 0.9rem; }

/* Responsive */
@media (max-width: 760px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-graphic { order: -1; }
  .nav { gap: 18px; }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .network-lines line { animation: none; }
  .product-card, .btn-primary { transition: none; }
}

/* Focus visibility */
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.about-points {
  margin-top: 32px;
  display: grid;
  gap: 18px;
}

.about-point {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-top: 1px solid var(--border-soft);
}

.about-point .mono {
  color: var(--accent);
  font-size: 0.85rem;
  padding-top: 2px;
}

.about-point p {
  color: var(--text-main);
  font-size: 1rem;
}


.contact { padding: 80px 0; background: var(--bg-surface-dim); }

.contact h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 40px; }

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
}

.contact-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-label { color: var(--accent); font-size: 0.8rem; }
.contact-value { color: var(--text-main); font-size: 1.05rem; font-weight: 500; }

.contact-btn {
  margin-top: 6px;
  display: inline-block;
  text-align: center;
  background: transparent;
  border: 1px solid var(--accent-teal);
  color: var(--accent-teal);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 10px 16px;
  border-radius: 8px;
  transition: background 0.2s ease, color 0.2s ease;
}

.contact-btn:hover, .contact-btn:focus-visible {
  background: var(--accent-teal);
  color: #0A1A17;
}

.contact-label { color: var(--accent); font-size: 0.8rem; }
.contact-value { color: var(--text-main); font-size: 1.05rem; font-weight: 500; }


/* Legal / content pages */
.legal-page { padding: 96px 0; }
.legal-wrap { max-width: 720px; }
.legal-updated { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 32px; }
.legal-page h1 { font-size: clamp(2rem, 4vw, 2.6rem); margin-bottom: 12px; }
.legal-page h2 { font-size: 1.25rem; margin-top: 32px; margin-bottom: 12px; }
.legal-page p { color: var(--text-muted); margin-bottom: 4px; }
.legal-page a { color: var(--accent); text-decoration: underline; }

.support-grid { margin-top: 32px; }

/* FAQ */
.faq-list { margin-top: 32px; display: grid; gap: 14px; }
.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: 12px;
  padding: 18px 22px;
}
.faq-item summary {
  cursor: pointer;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  color: var(--text-main);
  list-style: none;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  float: right;
  color: var(--accent);
}
.faq-item[open] summary::after { content: '–'; }
.faq-item p { margin-top: 12px; color: var(--text-muted); }

/* Blog */
.blog-list { margin-top: 32px; display: grid; gap: 24px; }
.blog-post {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  border-radius: 14px;
  padding: 24px;
}
.blog-date { color: var(--accent); display: block; margin-bottom: 8px; font-size: 0.8rem; }
.blog-post h3 { font-size: 1.3rem; margin-bottom: 10px; }
.blog-post p { color: var(--text-muted); }

/* Footer links row */
.footer-links { display: flex; gap: 20px; flex-wrap: wrap; }
.footer-links a { color: var(--text-muted); font-size: 0.9rem; }
.footer-links a:hover { color: var(--text-main); }
.footer-inner { flex-direction: column; gap: 16px; text-align: center; }
@media (min-width: 700px) {
  .footer-inner { flex-direction: row; justify-content: space-between; text-align: left; }
}


.blog-filters {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  color: var(--text-muted);
  padding: 8px 16px;
  border-radius: 100px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.8rem;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.filter-btn:hover, .filter-btn:focus-visible { color: var(--text-main); }

.filter-btn.active {
  border-color: var(--accent);
  color: var(--accent);
}

.blog-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
  flex-wrap: wrap;
}

.blog-tag {
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 100px;
}

.blog-tag-guide { background: rgba(255, 177, 60, 0.15); color: var(--accent); }
.blog-tag-update { background: rgba(79, 209, 197, 0.15); color: var(--accent-teal); }
.blog-tag-product { background: rgba(154, 160, 180, 0.15); color: var(--text-muted); }

.blog-body p { margin-bottom: 10px; }
.blog-body ol { padding-left: 20px; color: var(--text-muted); }
.blog-body li { margin-bottom: 6px; }

.newsletter-form { margin: 20px 0; text-align: center; }
.newsletter-label { font-size: 13px; color: var(--text-muted); margin-bottom: 10px; }
.newsletter-row { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; }
.newsletter-input {
  padding: 10px 14px; border-radius: 8px; border: 1px solid var(--border-soft);
  background: var(--bg-base); color: var(--text-main); font-family: inherit;
  font-size: 14px; min-width: 220px;
}
.newsletter-input::placeholder { color: var(--text-muted); }
.btn-primary.small { padding: 10px 18px; font-size: 14px; }
.logo-lockup { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; }
.logo-icon { width: 30px; height: 30px; }

.testimonials-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin-top: 32px; }
.testimonial-card { background: var(--bg-surface); border: 1px solid var(--border-soft); border-radius: 12px; padding: 22px; }
.testimonial-quote { font-size: 15px; line-height: 1.6; color: var(--text-main); margin-bottom: 14px; }
.testimonial-author { font-size: 13.5px; font-weight: 600; color: var(--text-main); }
.testimonial-product { font-size: 11px; color: var(--accent); display: inline-block; margin-top: 6px; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #1A1305;
  padding: 10px 16px;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }


.social-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
}

.social-icon {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: border-color 0.2s ease, color 0.2s ease;
}

.social-icon:hover, .social-icon:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
}

.visit-counter {
  margin-top: 20px;
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.visit-counter span {
  color: var(--accent);
  font-weight: 600;
}

.lead-form { max-width: 560px; }
.lead-form .admin-field { margin-bottom: 16px; }
.lead-form label { display: block; font-size: 12.5px; font-weight: 600; margin-bottom: 5px; color: var(--text-main); }
.lead-form input, .lead-form select, .lead-form textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border-soft); border-radius: 8px;
  font-family: inherit; font-size: 14px; box-sizing: border-box;
  background: var(--bg-base); color: var(--text-main);
}
.lead-form .admin-row { display: flex; gap: 12px; }
.lead-form .admin-row > div { flex: 1; }

.vote-row { display: flex; align-items: center; gap: 10px; margin-top: 12px; }
.vote-count { font-size: 12.5px; color: var(--text-muted); }

.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin: 32px 0 8px; }
.service-card { background: var(--bg-surface); border: 1px solid var(--border-soft); border-radius: 12px; padding: 22px; }
.service-card h3 { font-size: 16px; margin-bottom: 8px; color: var(--text-main); }
.service-card p { font-size: 14px; color: var(--text-muted); line-height: 1.55; }

.whatsapp-float {
  position: fixed;
  bottom: 22px;
  right: 22px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.35);
  z-index: 999;
  transition: transform 0.15s ease;
}
.whatsapp-float:hover { transform: scale(1.08); }
.whatsapp-float svg { width: 30px; height: 30px; }

.search-wrap { position: relative; margin-left: 16px; }
.search-toggle { background: none; border: none; font-size: 18px; cursor: pointer; color: var(--text-main); padding: 6px; }
.search-panel {
  position: absolute; top: 100%; right: 0; margin-top: 8px; width: 320px; max-width: 85vw;
  background: var(--bg-surface); border: 1px solid var(--border-soft); border-radius: 10px;
  padding: 12px; box-shadow: 0 8px 24px rgba(0,0,0,0.35); z-index: 1000;
}
.search-panel input {
  width: 100%; padding: 9px 12px; border-radius: 8px; border: 1px solid var(--border-soft);
  background: var(--bg-base); color: var(--text-main); font-family: inherit; font-size: 14px; box-sizing: border-box;
}
.search-results { margin-top: 8px; max-height: 320px; overflow-y: auto; }
.search-result { display: block; padding: 8px 6px; border-radius: 6px; text-decoration: none; }
.search-result:hover { background: var(--bg-base); }
.search-result-title { font-size: 13.5px; font-weight: 600; color: var(--text-main); }
.search-result-snippet { font-size: 12px; color: var(--text-muted); margin-top: 2px; }
.search-result-type { font-size: 10.5px; color: var(--accent); text-transform: uppercase; letter-spacing: 0.03em; }

.logo-full { height: 34px; width: auto; display: block; }

.header-inner { position: relative; }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-main);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.nav-wrap { display: flex; align-items: center; gap: 16px; }

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-wrap {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border-soft);
    flex-direction: column;
    align-items: stretch;
    padding: 16px 24px 20px;
    gap: 14px;
  }
  .nav-wrap.open { display: flex; }
  .nav { flex-direction: column; gap: 16px; }
  .search-wrap { margin-left: 0; }
  .search-panel { position: static; width: 100%; margin-top: 10px; box-shadow: none; }
}

@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .hero { padding: 64px 0 48px; }
  .products, .contact, .services, .about, .legal-page { padding: 56px 0; }
  .product-card, .service-card, .testimonial-card, .contact-card { padding: 20px; }
  .btn-primary { padding: 12px 22px; font-size: 0.95rem; }
  .whatsapp-float { width: 48px; height: 48px; bottom: 16px; right: 16px; }
  .whatsapp-float svg { width: 26px; height: 26px; }
}


.portfolio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 20px; margin: 32px 0 8px; }
.portfolio-card { background: var(--bg-surface); border: 1px solid var(--border-soft); border-radius: 14px; padding: 24px; }
.portfolio-card h3 { font-size: 1.2rem; margin-bottom: 14px; }
.portfolio-label { font-family: 'IBM Plex Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--accent); margin-bottom: 4px; margin-top: 14px; }
.portfolio-card p:not(.portfolio-label) { color: var(--text-muted); font-size: 14px; line-height: 1.55; }
.portfolio-card .card-link { display: inline-block; margin-top: 16px; }

.theme-toggle {
  background: none; border: none; font-size: 18px; cursor: pointer;
  color: var(--text-main); padding: 6px; margin-left: 8px;
}

.btn-secondary {
  display: inline-block;
  background: transparent;
  border: 1px solid var(--accent-teal);
  color: var(--accent-teal);
  font-weight: 500;
  padding: 12px 24px;
  border-radius: 8px;
  transition: background 0.2s ease, color 0.2s ease;
}
.btn-secondary:hover, .btn-secondary:focus-visible {
  background: var(--accent-teal);
  color: #0A1A17;
}

.quiz { padding: 80px 0; background: var(--bg-surface-dim); }
.quiz h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin-bottom: 32px; }
.quiz-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 14px; }
.quiz-option {
  text-align: left; background: var(--bg-surface); border: 1px solid var(--border-soft);
  border-radius: 12px; padding: 18px 20px; font-family: inherit; font-size: 14.5px;
  color: var(--text-main); cursor: pointer; transition: border-color 0.2s ease, transform 0.2s ease;
}
.quiz-option:hover, .quiz-option:focus-visible { border-color: var(--accent); transform: translateY(-2px); }
.quiz-result {
  margin-top: 8px; background: var(--bg-surface); border: 1px solid var(--border-soft);
  border-radius: 14px; padding: 28px;
}
.quiz-result h3 { font-size: 1.3rem; margin-bottom: 10px; }
.quiz-result p { color: var(--text-muted); margin-bottom: 18px; }
.quiz-result-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.lang-wrap { position: relative; }
.lang-toggle {
  background: none; border: 1px solid var(--border-soft); border-radius: 6px;
  font-family: 'IBM Plex Mono', monospace; font-size: 12px; font-weight: 600;
  cursor: pointer; color: var(--text-main); padding: 6px 10px; margin-left: 8px;
}
.lang-panel {
  display: none; position: absolute; top: 100%; right: 0; margin-top: 8px;
  background: var(--bg-surface); border: 1px solid var(--border-soft); border-radius: 10px;
  padding: 6px; box-shadow: 0 8px 24px rgba(0,0,0,0.35); z-index: 1000; min-width: 100px;
}
.lang-option {
  display: block; width: 100%; text-align: left; background: none; border: none;
  color: var(--text-main); font-family: inherit; font-size: 13.5px; padding: 8px 10px;
  border-radius: 6px; cursor: pointer;
}
.lang-option:hover { background: var(--bg-base); }


.header-actions { display: flex; align-items: center; gap: 4px; order: 3; }
.header-actions .lang-wrap, .header-actions .search-wrap { margin-left: 0; }

@media (max-width: 760px) {
  .nav-wrap {
    padding: 16px 24px 20px !important;
  }
  .nav-wrap .search-wrap,
  .nav-wrap .lang-wrap,
  .nav-wrap .theme-toggle {
    display: none !important;
  }
}

.related-posts { margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--border-soft); }
.related-posts-label { font-family: 'IBM Plex Mono', monospace; font-size: 11px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--accent); margin-bottom: 10px; }
.related-posts-list { display: flex; flex-direction: column; gap: 6px; }
.related-post-link { font-size: 13.5px; color: var(--accent-teal); }
.related-post-link:hover { text-decoration: underline; }


.cookie-banner {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 1001;
  background: var(--bg-surface); border-top: 1px solid var(--border-soft);
  padding: 16px 20px; display: none;
}
.cookie-banner-inner {
  max-width: 900px; margin: 0 auto; display: flex; align-items: center;
  gap: 16px; flex-wrap: wrap; justify-content: space-between;
}
.cookie-banner p { font-size: 13px; color: var(--text-muted); margin: 0; flex: 1; min-width: 220px; }
.cookie-banner a { color: var(--accent-teal); text-decoration: underline; }

@media print {
  .site-header, .site-footer, .whatsapp-float, .nav-toggle, .theme-toggle,
  .lang-wrap, .search-wrap, .skip-link, .btn-primary, .btn-secondary,
  .cookie-banner, #toast-holder {
    display: none !important;
  }
  body { background: white !important; color: black !important; }
  .legal-page { padding: 0 !important; }
  a { color: black !important; text-decoration: underline !important; }
  .legal-wrap { max-width: 100% !important; }
}


.back-to-top {
  position: fixed; bottom: 22px; right: 88px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--bg-surface); border: 1px solid var(--border-soft);
  color: var(--text-main); font-size: 18px; cursor: pointer;
  display: none; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px rgba(0,0,0,0.25); z-index: 998;
}
@media (max-width: 480px) {
  .back-to-top { right: 76px; width: 40px; height: 40px; bottom: 18px; }
}