:root {
    /* Surfaces — clinical lab, light */
    --black:  #f5f8fc;   /* page background        */
    --dark:   #eaf1f8;   /* inset / secondary fill */
    --panel:  #ffffff;   /* cards & panels         */
    --border: #dce5f0;   /* hairlines              */
    --blue-dim: #e8f1fe; /* pale blue tint         */

    /* Brand blue — sampled from the vial */
    --blue:   #1a5fe0;
    --cyan:   #1a5fe0;   /* single unified accent  */
    --cyan-dim: rgba(26,95,224,0.12);
    --accent: #1a5fe0;
    --deep:   #0f47b8;   /* pressed / deep accent  */

    /* Ink & text */
    --white:  #0c1a2b;   /* headings / strong ink  */
    --text:   #35485c;   /* body                   */
    --muted:  #5a6675;   /* captions / secondary — WCAG AA on --panel/--black/--dark (min 5.13:1) */
    --on-accent: #ffffff;/* text on accent fills   */
    --green:  #0b7a43;   /* WCAG AA on --panel/--black/--dark (min 4.75:1) */

    --shadow-sm: 0 1px 2px rgba(15,40,80,0.04), 0 2px 8px rgba(15,40,80,0.06);
    --shadow:    0 4px 24px -6px rgba(15,40,80,0.12), 0 1px 3px rgba(15,40,80,0.05);
  }

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

  html, body {
    background: var(--black) !important;
    min-height: 100%;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  html { scroll-behavior: smooth; }

  body {
    color: var(--text);
    font-family: var(--font-dm-sans, 'DM Sans'), sans-serif;
    font-weight: 300;
    line-height: 1.7;
    overflow-x: hidden;
  }

  /* Page panels — single definition (see also .page.active below). */

  /* ---- NOISE OVERLAY ---- */
  body::before {
    content: '';
    position: fixed; inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.04'/%3E%3C/svg%3E");
    pointer-events: none; z-index: 0; opacity: 0.35;
  }

  /* ---- PAGE TABS SYSTEM ---- */
  .page { display: none; background: var(--black); min-height: 100vh; }
  .page.active { display: block; }

  /* ---- NAV ---- */
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 48px;
    height: 72px;
    background: rgba(255,255,255,0.82);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
  }

  .nav-logo {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--white);
    text-decoration: none;
    letter-spacing: -0.02em;
    display: flex; align-items: center; gap: 4px;
  }

  /* Exact AB monogram from the supplied Aven Bio label artwork. */
  .nav-logo .brand-logo {
    display: block;
    width: 62px;
    height: 48px;
    overflow: hidden;
    flex: 0 0 auto;
  }
  .nav-logo .brand-lockup {
    display: block;
    width: 170px;
    max-width: none;
    height: auto;
  }
  .nav-logo .logo-rule {
    width: 1px; align-self: stretch;
    min-height: 1.15em;
    background: rgba(12,26,43,0.22);
    margin: 0 4px;
  }
  .nav-logo .logo-word {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 800;
    color: var(--white); letter-spacing: -0.02em; white-space: nowrap;
    line-height: 1;
  }

  .nav-logo .atom {
    width: 28px; height: 28px;
    border: 2px solid var(--cyan);
    border-radius: 50%;
    position: relative;
    display: inline-flex; align-items: center; justify-content: center;
  }
  .nav-logo .atom::before {
    content: '';
    width: 8px; height: 8px;
    background: var(--cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--cyan);
  }
  .nav-logo .atom::after {
    content: '';
    position: absolute;
    inset: -4px;
    border: 1px solid rgba(26,95,224,0.3);
    border-radius: 50%;
    animation: orbit 3s linear infinite;
  }

  @keyframes orbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  } /* tabs hidden — navigation via drawer only */

  .nav-cta {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.68rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--cyan);
    border: 1px solid var(--cyan);
    padding: 8px 18px;
    background: none;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
  }
  .nav-cta:hover {
    background: var(--cyan);
    color: var(--on-accent);
  }

  /* Hamburger — always visible on left */
  .nav-hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    order: -1; /* stays left */
    flex-shrink: 0;
  }
  .nav-hamburger span {
    display: block;
    width: 24px; height: 2px;
    background: var(--text);
    transition: all 0.3s;
    border-radius: 2px;
  }
  .nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-hamburger.open span:nth-child(2) { opacity: 0; }
  .nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  /* Drawer — full-width slide-down panel */
  .mobile-drawer {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 72px; left: 0; right: 0;
    background: rgba(255,255,255,0.93);
    backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--border);
    z-index: 99;
    padding: 8px 0 20px;
    transform: translateY(-110%);
    transition: transform 0.3s cubic-bezier(0.4,0,0.2,1);
  }
  .mobile-drawer.open { transform: translateY(0); }
  .mobile-drawer button {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--muted);
    background: none;
    border: none;
    border-bottom: 1px solid var(--border);
    padding: 18px 32px;
    text-align: left;
    cursor: pointer;
    transition: color 0.2s, background 0.2s, padding-left 0.2s;
    display: flex; align-items: center; gap: 12px;
  }
  .mobile-drawer button::before {
    content: '›';
    color: var(--cyan);
    font-size: 1.1rem;
    opacity: 0;
    transition: opacity 0.2s, transform 0.2s;
    transform: translateX(-6px);
  }
  .mobile-drawer button:last-child { border-bottom: none; }
  .mobile-drawer button:hover { color: var(--white); background: rgba(26,95,224,0.04); padding-left: 40px; }
  .mobile-drawer button:hover::before { opacity: 1; transform: translateX(0); }
  .mobile-drawer button.active-page { color: var(--cyan); }

  @keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
  }

  /* ---- SECTION COMMON ---- */
  section { position: relative; }

  .section-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 48px;
  }

  .section-label {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 16px;
    display: flex; align-items: center; gap: 12px;
  }
  .section-label::after {
    content: '';
    height: 1px; width: 40px;
    background: var(--cyan);
    opacity: 0.5;
  }

  .section-title {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 3.2rem);
    line-height: 1.05;
    letter-spacing: -0.02em;
    color: var(--white);
    margin-bottom: 20px;
  }

  .section-desc {
    color: var(--muted);
    font-size: 1rem;
    max-width: 560px;
    line-height: 1.8;
  }

  /* ---- PEPTIDES GRID ---- */
  .peptides-section {
    background: var(--dark);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .peptides-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 60px;
    gap: 32px;
  }

  .category-tabs {
    display: flex; gap: 0;
    flex-wrap: wrap;
    margin-bottom: 48px;
  }

  .tab {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text);
    padding: 10px 20px;
    border: 1px solid rgba(255,255,255,0.15);
    cursor: pointer;
    background: rgba(26,95,224,0.05);
    transition: all 0.2s;
    margin-right: -1px;
  }
  .tab:hover { color: var(--cyan); border-color: var(--cyan); z-index: 1; background: rgba(26,95,224,0.06); }
  .tab.active {
    color: var(--on-accent);
    background: var(--cyan);
    border-color: var(--cyan);
    z-index: 1;
  }

  .peptides-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: 1px;
    background: var(--border);
  }

  .peptide-card {
    background: var(--dark);
    padding: 36px;
    position: relative;
    overflow: hidden;
    cursor: pointer;
    transition: background 0.3s;
  }

  .peptide-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), var(--blue));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s;
  }

  .peptide-card:hover { background: var(--panel); }
  .peptide-card:hover::before { transform: scaleX(1); }

  .card-category {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 12px;
    display: flex; align-items: center; gap: 6px;
  }

  .card-category::before {
    content: '';
    width: 4px; height: 4px;
    border-radius: 50%;
    background: var(--cyan);
  }

  .card-name {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 700;
    font-size: 1.4rem;
    color: var(--white);
    margin-bottom: 8px;
    letter-spacing: -0.01em;
  }

  .card-desc {
    font-size: 0.875rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 24px;
  }

  .card-benefits {
    list-style: none;
    display: flex; flex-direction: column; gap: 6px;
    margin-bottom: 24px;
  }

  .card-benefits li {
    font-size: 0.8rem;
    color: var(--text);
    display: flex; gap: 10px; align-items: flex-start;
  }

  .card-benefits li::before {
    content: '›';
    color: var(--cyan);
    font-size: 1rem;
    line-height: 1.2;
    flex-shrink: 0;
  }

  /* ---- BLOG SECTION ---- */
  .blog-section { background: var(--black); }

  .blog-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr;
    gap: 1px;
    background: var(--border);
    margin-top: 48px;
  }

  .blog-card {
    background: var(--black);
    padding: 36px;
    position: relative;
    overflow: hidden;
    transition: background 0.3s;
  }
  .blog-card:hover { background: var(--panel); }

  .blog-card.featured {
    grid-row: span 2;
  }

  .blog-date {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 10px;
  }

  .blog-title {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--white);
    line-height: 1.3;
    margin-bottom: 12px;
    letter-spacing: -0.01em;
  }

  .blog-card.featured .blog-title {
    font-size: 1.4rem;
  }

  .blog-excerpt {
    font-size: 0.85rem;
    color: var(--muted);
    line-height: 1.7;
    margin-bottom: 20px;
  }

  .blog-tag {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--cyan);
    border: 1px solid rgba(26,95,224,0.2);
    padding: 3px 10px;
    background: rgba(26,95,224,0.04);
  }

  /* ---- CALCULATOR SECTION ---- */
  .calc-section {
    background: var(--dark);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .calc-wrapper {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 80px;
    align-items: center;
  }

  .calc-panel {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 40px;
    position: relative;
  }

  .calc-panel::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--cyan), transparent);
  }

  .calc-row {
    margin-bottom: 24px;
  }

  .calc-label {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
    display: block;
  }

  .calc-input, .calc-select {
    width: 100%;
    background: var(--dark);
    border: 1px solid var(--border);
    color: var(--white);
    padding: 12px 16px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.85rem;
    outline: none;
    transition: border-color 0.2s;
    appearance: none;
  }

  .calc-input:focus, .calc-select:focus {
    border-color: var(--cyan);
  }

  .calc-result {
    background: rgba(26,95,224,0.05);
    border: 1px solid rgba(26,95,224,0.2);
    padding: 20px;
    margin-top: 24px;
  }

  .calc-result-label {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cyan);
    margin-bottom: 8px;
  }

  .calc-result-value {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 700;
    font-size: 2rem;
    color: var(--white);
  }

  .calc-result-unit {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.7rem;
    color: var(--muted);
    margin-left: 8px;
  }

  /* ---- FAQ ---- */
  .faq-section { background: var(--black); }

  .faq-category {
    margin-top: 48px;
  }
  .faq-category:first-child { margin-top: 36px; }

  .faq-category-header {
    display: flex; align-items: center; gap: 16px;
    margin-bottom: 2px;
    padding: 0 4px;
  }

  .faq-category-title {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--cyan);
    white-space: nowrap;
  }

  .faq-category-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--border), transparent);
  }

  .faq-list {
    display: flex; flex-direction: column; gap: 1px;
    background: var(--border);
  }

  .faq-item {
    background: var(--black);
    border: none; outline: none;
    padding: 24px 32px;
    text-align: left;
    cursor: pointer;
    transition: background 0.2s;
    position: relative;
    width: 100%;
  }

  .faq-item:hover { background: var(--panel); }
  .faq-item:focus-visible { outline: 2px solid var(--cyan); outline-offset: -2px; }

  .faq-q {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 600;
    font-size: 1rem;
    color: var(--white);
    display: flex; justify-content: space-between; align-items: flex-start; gap: 24px;
  }

  .faq-icon {
    color: var(--cyan);
    font-size: 1.4rem;
    line-height: 1;
    flex-shrink: 0;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    transition: transform 0.25s ease;
  }

  .faq-a {
    font-size: 0.9rem;
    color: var(--muted);
    line-height: 1.8;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding-top 0.3s;
  }

  .faq-item.open .faq-a {
    max-height: 300px;
    padding-top: 14px;
  }

  .faq-item.open .faq-icon { transform: rotate(45deg); }
  .faq-item.open { background: var(--panel); }

  /* ---- CONTACT ---- */
  .contact-section { background: var(--black); }

  /* ---- FOOTER ---- */
  footer {
    border-top: 1px solid var(--border);
    padding: 48px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    text-align: center;
  }

  .footer-tagline {
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-weight: 800;
    font-size: clamp(1.5rem, 4vw, 3rem);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: transparent;
    -webkit-text-stroke: 1px rgba(26,95,224,0.4);
  }

  .footer-legal {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    color: var(--muted);
    max-width: 600px;
    line-height: 1.8;
  }

  .footer-links {
    display: flex; gap: 32px; flex-wrap: wrap; justify-content: center;
  }
  .footer-links a {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--muted);
    text-decoration: none;
    transition: color 0.2s;
  }
  .footer-links a:hover { color: var(--cyan); }

  /* ---- WARN BANNER ---- */
  .warn-banner {
    background: rgba(234,88,12,0.06);
    border-top: 1px solid rgba(234,88,12,0.10);
    border-bottom: 1px solid rgba(234,88,12,0.10);
    padding: 12px 48px;
    display: flex; align-items: center; gap: 12px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem;
    letter-spacing: 0.06em;
    color: rgba(255,180,100,0.8);
    text-transform: uppercase;
  }

  .warn-icon { font-size: 0.9rem; }

  /* ---- ANIMATIONS ---- */

  /* Responsive */
  @media (max-width: 900px) {
    nav { padding: 0 16px; height: 60px; }
    .mobile-drawer { top: 60px; }
    .nav-logo { font-size: 1.1rem; }
    .nav-logo .atom { width: 22px; height: 22px; }
    .nav-cta { padding: 6px 14px; font-size: 0.65rem; }
    .section-inner { padding: 64px 20px; }
    .blog-grid { grid-template-columns: 1fr; }
    .blog-card.featured { grid-row: auto; }
    .calc-wrapper { grid-template-columns: 1fr; gap: 40px; }
    .contact-grid { grid-template-columns: 1fr; }
    .hero { padding: 90px 20px 64px; }
    .hero-stats { gap: 20px; flex-wrap: wrap; justify-content: center; }
    .hero-stats .stat-item { min-width: 80px; }
    .peptides-grid { grid-template-columns: 1fr; }
    .peptides-header { flex-direction: column; align-items: flex-start; gap: 16px; margin-bottom: 40px; }
    .peptides-header .section-desc { max-width: none; }
    footer { padding: 40px 20px; }
    .warn-banner { padding: 10px 20px; flex-direction: column; text-align: center; gap: 6px; font-size: 0.65rem; }
  }

        .j-card { background: var(--panel); border: 1px solid var(--border); border-radius: 6px; padding: 20px; margin-bottom: 12px; box-shadow: var(--shadow-sm); }
        .j-label { font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem; letter-spacing: 2px; text-transform: uppercase; color: var(--muted); margin-bottom: 14px; display: block; }
        .j-btn-group { display: flex; flex-wrap: wrap; gap: 6px; }
        .j-opt { flex: 1 1 auto; min-width: 90px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 4px;
                 background: var(--dark); color: var(--muted); font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.72rem;
                 cursor: pointer; transition: all 0.15s; text-align: center; line-height: 1.4; }
        .j-opt:hover { border-color: var(--cyan); color: var(--cyan); background: rgba(26,95,224,0.06); }
        .j-opt.active { border-color: var(--cyan); background: rgba(26,95,224,0.12); color: var(--cyan); font-weight: 500; }
        .j-toggle { display:inline-flex; border:1px solid var(--border); border-radius:4px; overflow:hidden; }
        .j-toggle-btn { padding: 8px 18px; border: none; background: var(--dark); color: var(--muted);
                        font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.68rem; letter-spacing: 1px; cursor: pointer; transition: all 0.15s; }
        .j-toggle-btn.active { background: var(--cyan); color: var(--on-accent); font-weight: 600; }
        .j-input { width:100%; padding:12px 14px; border:1px solid var(--border); border-radius:4px;
                   background:var(--dark); color:var(--white); font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.95rem;
                   outline:none; transition:border-color 0.15s; -moz-appearance:textfield; }
        .j-input::-webkit-inner-spin-button,.j-input::-webkit-outer-spin-button{-webkit-appearance:none;}
        .j-input:focus { border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(26,95,224,0.1); }
        .j-input::placeholder { color: var(--muted); }
        .j-result-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:8px; width:100%; }
        .j-result-box { background:var(--dark); border:1px solid var(--border); border-radius:4px; padding:12px 8px; text-align:center; }
        .j-r-label { font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.65rem; color:var(--muted); letter-spacing:1.5px; text-transform:uppercase; display:block; margin-bottom:5px; }
        .j-r-value { font-family:var(--font-syne, 'Syne'), sans-serif; font-size:1.5rem; font-weight:700; color:var(--cyan); display:block; line-height:1; }
        .j-r-unit { font-size:0.65rem; color:var(--text); display:block; margin-top:3px; }
        .j-warn { padding:10px 14px; border-radius:4px; font-size:0.75rem; line-height:1.5; border-left:3px solid; margin-bottom:6px; font-family:var(--font-space-mono, 'Space Mono'), monospace; }
        .j-warn.warn { background:rgba(251,146,60,0.1); border-color:#fb923c; color:#9a3412; }
        .j-warn.error { background:rgba(239,68,68,0.1); border-color:#ef4444; color:#b91c1c; }
        .j-table { width:100%; border-collapse:collapse; font-size:0.75rem; font-family:var(--font-space-mono, 'Space Mono'), monospace; }
        .j-table th { text-align:left; padding:8px 12px; background:var(--dark); color:var(--cyan); font-size:0.65rem; letter-spacing:1.5px; text-transform:uppercase; border-bottom:1px solid var(--border); }
        .j-table td { padding:9px 12px; border-bottom:1px solid var(--border); color:var(--muted); }
        .j-table tr:last-child td { border-bottom:none; }
        .j-table td:first-child { color:var(--text); }
        .j-conv-grid { display:grid; grid-template-columns:1fr 1fr; gap:10px; }
        .j-mini-conv { background:var(--dark); border:1px solid var(--border); border-radius:4px; padding:14px; }
        .j-conv-title { font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.65rem; letter-spacing:2px; text-transform:uppercase; color:var(--cyan); margin-bottom:12px; }
        .j-conv-input { flex:1; padding:8px 10px; border:1px solid var(--border); border-radius:4px;
                        font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.8rem; color:var(--text);
                        background:var(--panel); outline:none; min-width:0; -moz-appearance:textfield; }
        .j-conv-input::-webkit-inner-spin-button,.j-conv-input::-webkit-outer-spin-button{-webkit-appearance:none;}
        .j-conv-input:focus { border-color:var(--cyan); }
        .j-conv-input::placeholder { color:var(--muted); }
        .j-conv-label { font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.65rem; color:var(--muted); white-space:nowrap; }
        .j-custom-wrap { margin-top:10px; display:none; }
        .j-custom-wrap.visible { display:block; }
        @media(max-width:480px) { .j-result-grid{grid-template-columns:1fr;} .j-conv-grid{grid-template-columns:1fr;} }

  /* ---- HOMEPAGE (EDITORIAL) ---- */

  #heroCanvas {
    position: absolute; inset: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0; opacity: 0.45;
  }

  /* film grain / texture */
  .hx-grain {
    position: absolute; inset: 0; z-index: 0; pointer-events: none;
    opacity: 0.5;
    background:
      radial-gradient(ellipse 120% 80% at 75% 0%, rgba(0,180,255,0.07) 0%, transparent 55%),
      radial-gradient(ellipse 90% 60% at 10% 100%, rgba(26,107,255,0.06) 0%, transparent 50%);
  }

  .hx-hero {
    position: relative; overflow: hidden;
    background: var(--black);
    min-height: 100vh;
    display: flex; flex-direction: column;
    padding-top: 72px;
  }

  /* faint vertical rule down the middle-left, editorial touch */
  .hx-hero::before {
    content: ''; position: absolute; z-index: 0; pointer-events: none;
    top: 0; bottom: 0; left: 56px;
    width: 1px;
    background: linear-gradient(180deg, transparent, rgba(26,95,224,0.08) 20%, rgba(26,95,224,0.08) 80%, transparent);
  }

  .hx-hero-grid {
    flex: 1;
    max-width: 1240px; width: 100%; margin: 0 auto;
    padding: 0 56px;
    display: grid; grid-template-columns: minmax(0, 980px);
    gap: 0; align-items: center;
    position: relative; z-index: 1;
  }

  /* ── LEFT ── */
  .hx-lead { padding: 48px 0; }

  .hx-kicker {
    display: flex; align-items: center; gap: 14px;
    margin-bottom: 36px;
  }
  .hx-kicker-idx {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.7rem;
    color: var(--cyan); letter-spacing: 0.05em;
  }
  .hx-kicker-txt {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted);
    position: relative; padding-left: 14px;
  }
  .hx-kicker-txt::before {
    content: ''; position: absolute; left: 0; top: 50%; width: 6px; height: 1px;
    background: var(--muted); transform: translateY(-50%);
  }

  .hx-title {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 800;
    font-size: clamp(2.9rem, 5.2vw, 5.2rem);
    line-height: 0.98; letter-spacing: -0.045em;
    color: var(--white); margin-bottom: 28px;
    overflow-wrap: break-word;
  }
  .hx-title-line { display: block; }
  .hx-title-accent {
    background: linear-gradient(102deg, #1a5fe0 0%, #1a5fe0 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text;
  }

  .hx-lede {
    font-size: 1.02rem; color: var(--text);
    line-height: 1.75; max-width: 620px; margin-bottom: 36px;
    font-weight: 300;
  }

  .hx-actions { display: flex; gap: 12px; flex-wrap: wrap; }

  .hx-btn {
    display: inline-flex; align-items: center; gap: 9px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.7rem;
    font-weight: 700; letter-spacing: 0.08em; text-transform: uppercase;
    color: var(--on-accent); background: var(--cyan);
    border: none; padding: 14px 22px; cursor: pointer;
    transition: all 0.22s ease;
  }
  .hx-btn svg { transition: transform 0.22s ease; }
  .hx-btn:hover { background: #4d84ea; box-shadow: 0 10px 30px -8px rgba(26,95,224,0.5); }
  .hx-btn:hover svg { transform: translateX(3px); }

  .hx-btn-ghost {
    background: transparent; color: var(--text);
    border: 1px solid var(--border);
  }
  .hx-btn-ghost:hover {
    background: rgba(26,95,224,0.05); border-color: rgba(26,95,224,0.4);
    color: var(--cyan); box-shadow: none;
  }

  /* ── RIGHT: CONSOLE ── */
  .hx-console { position: relative; display: flex; justify-content: center; }
  .hx-console[hidden] { display: none !important; }

  .hx-console-frame {
    width: 100%; max-width: 380px;
    background: linear-gradient(160deg, rgba(255,255,255,0.92) 0%, rgba(241,246,252,0.95) 100%);
    border: 1px solid var(--border);
    box-shadow:
      0 24px 60px -20px rgba(15,40,80,0.18),
      0 1px 0 rgba(255,255,255,0.9) inset;
    backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px);
  }

  .hx-console-top {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 16px; border-bottom: 1px solid rgba(26,95,224,0.08);
  }
  .hx-console-tag {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.18em; color: var(--muted);
  }
  .hx-console-live {
    display: inline-flex; align-items: center; gap: 6px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.15em; color: var(--cyan);
  }
  .hx-live-dot {
    width: 5px; height: 5px; border-radius: 50%; background: var(--cyan);
    box-shadow: 0 0 6px var(--cyan); animation: blink 1.8s ease-in-out infinite;
  }

  /* viewport */
  .hx-viewport {
    position: relative; padding: 8px 16px 0;
    background:
      linear-gradient(rgba(26,95,224,0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(26,95,224,0.025) 1px, transparent 1px);
    background-size: 22px 22px;
    background-position: center;
  }
  .hx-mol { width: 100%; height: auto; display: block; }
  .hx-bonds line { animation: none; }

  .hx-scan-atom {
    transform-origin: 200px 70px;
    animation: scanpulse 2.4s ease-out infinite;
  }
  @keyframes scanpulse {
    0%   { r: 10; opacity: 0.7; }
    100% { r: 30; opacity: 0; }
  }

  .hx-viewport-label {
    display: flex; align-items: baseline; justify-content: space-between;
    padding: 6px 2px 14px;
    border-bottom: 1px solid rgba(26,95,224,0.08);
  }
  .hx-viewport-label > span:first-child {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 700; font-size: 0.95rem;
    color: var(--white);
  }
  .hx-vp-formula {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem; color: var(--cyan);
  }

  /* readout */
  .hx-readout { padding: 14px 16px 18px; display: flex; flex-direction: column; gap: 11px; }
  .hx-read-row {
    display: flex; align-items: center; justify-content: space-between;
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.66rem;
  }
  .hx-read-k { color: var(--muted); letter-spacing: 0.04em; }
  .hx-read-v { color: var(--text); }
  .hx-read-hl { color: var(--cyan); display: inline-flex; align-items: center; gap: 8px; }
  .hx-bar {
    display: inline-block; width: 48px; height: 3px;
    background: rgba(26,95,224,0.15); position: relative; overflow: hidden;
  }
  .hx-bar-fill {
    position: absolute; left: 0; top: 0; bottom: 0; width: 98.5%;
    background: var(--cyan); box-shadow: 0 0 6px var(--cyan);
  }

  /* floating chip */
  .hx-chip {
    position: absolute; bottom: -22px; left: -28px;
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px;
    background: rgba(6,17,31,0.92);
    border: 1px solid rgba(26,95,224,0.2);
    backdrop-filter: blur(10px);
    box-shadow: 0 16px 40px -12px rgba(0,0,0,0.6);
    animation: chipfloat 5s ease-in-out infinite;
  }
  @keyframes chipfloat { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-7px); } }
  .hx-chip-n {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 800; font-size: 1.5rem;
    color: var(--cyan); letter-spacing: -0.03em; line-height: 1;
  }
  .hx-chip-l {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.08em; color: var(--muted); line-height: 1.5; text-transform: uppercase;
  }

  /* ── INDEX STRIP ── */
  .hx-index {
    position: relative; z-index: 1;
    max-width: 1240px; width: 100%; margin: 0 auto;
    padding: 0 56px 0;
    display: grid; grid-template-columns: repeat(4, 1fr);
    border-top: 1px solid var(--border);
  }
  .hx-index-item {
    display: flex; flex-direction: column; gap: 6px;
    padding: 26px 28px; cursor: pointer; text-align: left;
    background: none; border: none; border-right: 1px solid var(--border);
    transition: background 0.2s;
  }
  .hx-index-item:last-child { border-right: none; }
  .hx-index-item:hover { background: rgba(26,95,224,0.03); }
  .hx-index-item:hover .hx-index-n { color: var(--cyan); }
  .hx-index-n {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 800; font-size: 1.7rem;
    color: var(--white); letter-spacing: -0.03em; line-height: 1; transition: color 0.2s;
  }
  .hx-index-l {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted);
  }

  /* ══ FEATURE ROW ══ */
  .hx-features { background: var(--dark); border-top: 1px solid var(--border); }
  .hx-features-inner {
    max-width: 1240px; margin: 0 auto; padding: 0 56px;
    display: grid; grid-template-columns: repeat(3, 1fr);
  }
  .hx-feat {
    padding: 48px 40px 44px; cursor: pointer;
    border-right: 1px solid var(--border);
    position: relative; transition: background 0.25s;
    overflow: hidden;
  }
  .hx-feat:last-child { border-right: none; }
  .hx-feat::after {
    content: ''; position: absolute; left: 0; right: 0; bottom: 0; height: 2px;
    background: linear-gradient(90deg, var(--cyan), transparent);
    transform: scaleX(0); transform-origin: left; transition: transform 0.35s ease;
  }
  .hx-feat:hover { background: var(--panel); }
  .hx-feat:hover::after { transform: scaleX(1); }
  .hx-feat:hover .hx-feat-ic { color: var(--cyan); }
  .hx-feat:hover .hx-feat-go { color: var(--cyan); }
  .hx-feat:hover .hx-feat-go svg { transform: translateX(3px); }

  .hx-feat-top {
    display: flex; align-items: center; justify-content: space-between;
    margin-bottom: 28px;
  }
  .hx-feat-idx {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.7rem;
    color: var(--muted); letter-spacing: 0.1em;
  }
  .hx-feat-ic { width: 22px; height: 22px; color: var(--muted); transition: color 0.25s; }

  .hx-feat-title {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 700; font-size: 1.4rem;
    color: var(--white); letter-spacing: -0.02em; margin-bottom: 12px;
  }
  .hx-feat-desc {
    font-size: 0.875rem; color: var(--muted); line-height: 1.7;
    margin-bottom: 24px; font-weight: 300;
  }
  .hx-feat-go {
    display: inline-flex; align-items: center; gap: 7px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.1em; text-transform: uppercase; color: var(--text);
    transition: color 0.25s;
  }
  .hx-feat-go svg { transition: transform 0.25s; }

  /* ══ MVV STRIP ══ */
  .hx-mvv { background: var(--black); border-top: 1px solid var(--border); }
  .hx-mvv-inner {
    max-width: 1240px; margin: 0 auto; padding: 64px 56px;
    display: grid; grid-template-columns: 200px 1fr; gap: 48px;
  }
  .hx-mvv-head {
    display: flex; align-items: center; gap: 10px; align-self: start;
    position: sticky; top: 100px;
  }
  .hx-mvv-mark { color: var(--cyan); font-size: 0.8rem; }
  .hx-mvv-eyebrow {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem;
    letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted);
  }

  .hx-mvv-rows { display: flex; flex-direction: column; }
  .hx-mvv-row {
    display: grid; grid-template-columns: 130px 1fr; gap: 32px;
    padding: 26px 0; border-top: 1px solid var(--border);
    align-items: baseline;
  }
  .hx-mvv-row:first-child { border-top: none; padding-top: 0; }
  .hx-mvv-row:last-child { padding-bottom: 0; }
  .hx-mvv-label {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 700; font-size: 1.15rem;
    color: var(--white); letter-spacing: -0.01em;
  }
  .hx-mvv-copy {
    font-size: 0.95rem; color: var(--muted); line-height: 1.75; font-weight: 300;
  }
  .hx-tag {
    display: inline-block;
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.66rem;
    letter-spacing: 0.05em; color: var(--cyan);
    padding: 5px 12px; margin: 0 7px 7px 0;
    border: 1px solid rgba(26,95,224,0.2); background: rgba(26,95,224,0.04);
  }

  /* ── RESPONSIVE ── */
  @media (max-width: 960px) {
    .hx-hero { padding-top: 64px; }
    .hx-hero::before { display: none; }
    .hx-hero-grid { grid-template-columns: 1fr; gap: 8px; padding: 0 22px; }
    .hx-lead { padding: 40px 0 8px; }
    .hx-console { display: none; }
    .hx-title { font-size: clamp(1.4rem, 7vw, 2.4rem); letter-spacing: -0.03em; }
    .hx-lede { font-size: 0.95rem; max-width: none; }
    .hx-actions { flex-direction: column; align-items: stretch; }
    .hx-btn { width: 100%; justify-content: center; }
    .hx-index { grid-template-columns: 1fr 1fr; padding: 0 22px; }
    .hx-index-n { font-size: 1.3rem; overflow-wrap: break-word; }
    .hx-index-item:nth-child(2) { border-right: none; }
    .hx-index-item:nth-child(1), .hx-index-item:nth-child(2) { border-bottom: 1px solid var(--border); }
    .hx-features-inner { grid-template-columns: 1fr; padding: 0 22px; }
    .hx-feat { border-right: none; border-bottom: 1px solid var(--border); padding: 36px 24px; }
    .hx-feat:last-child { border-bottom: none; }
    .hx-mvv-inner { grid-template-columns: 1fr; gap: 28px; padding: 48px 22px; }
    .hx-mvv-head { position: static; }
    .hx-mvv-row { grid-template-columns: 1fr; gap: 10px; }
  }

  /* ---- RECONSTITUTION GUIDE ---- */
  /* ---- RECONSTITUTION GUIDE ---- */
  /* ---- RECONSTITUTION GUIDE ---- */
  .reconst-guide {
    display: flex; flex-direction: column; gap: 20px;
  }

  .rg-header {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem; letter-spacing: 0.18em; text-transform: uppercase;
    color: var(--cyan); margin-bottom: 4px;
  }

  .rg-step {
    display: flex; gap: 16px; align-items: flex-start;
  }

  .rg-step-num {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 800;
    font-size: 1.6rem; line-height: 1; letter-spacing: -0.04em;
    color: transparent; -webkit-text-stroke: 1px rgba(26,95,224,0.25);
    flex-shrink: 0; width: 36px; padding-top: 2px;
  }

  .rg-step-body { flex: 1; }

  .rg-step-title {
    font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 700;
    font-size: 0.9rem; color: var(--white);
    margin-bottom: 8px; letter-spacing: -0.01em;
  }

  .rg-step-text {
    font-size: 0.82rem; color: var(--muted); line-height: 1.7;
  }
  .rg-step-text em { font-style: normal; color: var(--text); }

  .rg-inputs-list { display: flex; flex-direction: column; gap: 7px; }

  .rg-input-item {
    display: flex; align-items: center; gap: 10px;
    font-family: var(--font-dm-sans, 'DM Sans'), sans-serif;
    font-size: 0.82rem; color: var(--muted);
  }

  .rg-result-item { color: var(--text); }

  .rg-dot {
    width: 5px; height: 5px; border-radius: 50%;
    background: var(--border); flex-shrink: 0;
  }
  .rg-dot-result { background: var(--cyan); box-shadow: 0 0 6px rgba(26,95,224,0.5); }

  /* ---- "IMPORTANTE" WARNING BOX ----
     Body text was rgba(254,215,170,0.8) — a pale orange left over from the
     original dark theme, measuring 1.20:1 on the light background (invisible).
     Orange is now reserved for the accent border, icon and heading; the body
     copy uses dark ink. All values verified WCAG AA against #fff7ed:
       #3f342d body    11.36:1
       #7c2d12 strong   8.83:1
       #b45309 heading  4.73:1  (passes AA for the 0.65rem uppercase label)
       #c45a16 border   4.10:1  (non-text UI accent, needs 3:1) */
  .rg-important {
    background: #fff7ed;
    border: 1px solid rgba(196,90,22,0.28);
    border-left: 3px solid #c45a16;
    padding: 16px;
  }

  .rg-important-header {
    display: flex; align-items: center; gap: 8px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem; letter-spacing: 0.15em; text-transform: uppercase;
    color: #b45309; margin-bottom: 10px;
  }
  /* CSS beats SVG presentation attributes, so the inline stroke/fill on the
     warning icon is retinted here rather than edited in all three boxes. */
  .rg-important-header svg path,
  .rg-important-header svg line { stroke: #b45309; }
  .rg-important-header svg circle { fill: #b45309; }

  .rg-important-text {
    font-size: 0.8rem; color: #3f342d; line-height: 1.7;
  }
  .rg-important-text strong { color: #7c2d12; font-weight: 700; }

  .rg-ref {
    background: var(--panel);
    border: 1px solid var(--border);
    padding: 16px;
  }

  .rg-ref-label {
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.65rem; letter-spacing: 0.14em; text-transform: uppercase;
    color: var(--muted); margin-bottom: 12px;
  }

  .rg-ref-grid { display: flex; flex-direction: column; gap: 2px; }

  .rg-ref-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 7px 10px;
    background: var(--dark);
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: 0.68rem; color: var(--muted);
    border: 1px solid var(--border);
  }

  .rg-ref-val { color: var(--cyan); font-weight: 500; }

  @media (max-width: 900px) {
    .reconst-guide { gap: 16px; }
    .rg-step-num { font-size: 1.2rem; width: 28px; }
  }


  /* Combo row slide-in */
  @keyframes comboRowIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
  }
  .combo-row { animation: comboRowIn 0.22s ease forwards; }

  /* ---- KNOWLEDGE CENTER ---- */
  .kc-intro { max-width: 680px; }
  .kc-group { margin-top: 46px; }
  .kc-group-label {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.66rem; letter-spacing: 0.16em;
    text-transform: uppercase; color: var(--cyan); margin-bottom: 18px;
    display: flex; align-items: center; gap: 12px;
  }
  .kc-group-label::after { content:''; flex:1; height:1px; background: var(--border); }
  .kc-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; align-items: start; }
  .kc-card {
    background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
    padding: 24px; cursor: pointer; transition: border-color .18s, box-shadow .18s, transform .18s;
    box-shadow: var(--shadow-sm); text-align: left; width: 100%; font: inherit; color: inherit;
    display: flex; flex-direction: column; gap: 12px;
  }
  .kc-card:hover { border-color: var(--cyan); box-shadow: var(--shadow); transform: translateY(-2px); }
  .kc-card-ic {
    width: 42px; height: 42px; border-radius: 10px; background: var(--blue-dim);
    display: flex; align-items: center; justify-content: center; color: var(--cyan); flex-shrink: 0;
  }
  .kc-card-title { font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 700; font-size: 1.02rem; color: var(--white); line-height: 1.25; }
  .kc-card-desc { font-family: var(--font-dm-sans, 'DM Sans'), sans-serif; font-size: 0.86rem; color: var(--muted); line-height: 1.55; }
  .kc-card-more {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase;
    color: var(--cyan); margin-top: auto; display: inline-flex; align-items: center; gap: 6px;
  }
  .kc-detail { display: none; margin-top: 6px; padding-top: 18px; border-top: 1px solid var(--border);
    font-family: var(--font-dm-sans, 'DM Sans'), sans-serif; font-size: 0.9rem; color: var(--text); line-height: 1.7; }
  .kc-card.open { grid-column: 1 / -1; border-color: var(--cyan); box-shadow: var(--shadow); transform: none; }
  .kc-card.open .kc-detail { display: block; }
  .kc-card.open .kc-card-more { color: var(--muted); }
  .kc-detail h4, .kc-detail h2.kc-sub { font-family:var(--font-syne, 'Syne'), sans-serif; font-weight:700; font-size:0.95rem; color:var(--white); margin:16px 0 6px; }
  .kc-detail p { margin-bottom: 10px; }
  .kc-detail ul { margin: 4px 0 12px 18px; }
  .kc-detail li { margin-bottom: 5px; }
  .kc-detail strong { color: var(--white); }
  .kc-mini-table { width:100%; border-collapse:collapse; font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.78rem; margin:6px 0 12px; }
  .kc-mini-table th { text-align:left; padding:8px 10px; background:var(--dark); color:var(--cyan); font-size:0.65rem; letter-spacing:.12em; text-transform:uppercase; border-bottom:1px solid var(--border); }
  .kc-mini-table td { padding:8px 10px; border-bottom:1px solid var(--border); color:var(--text); }
  .kc-mini-table td:first-child { color:var(--white); }
  .kc-note { background: var(--blue-dim); border-left: 3px solid var(--cyan); border-radius: 6px; padding: 12px 16px; font-size:0.82rem; color: var(--text); margin: 8px 0 4px; }
  @media (max-width: 900px) { .kc-grid { grid-template-columns: repeat(2, 1fr); } }
  @media (max-width: 600px) { .kc-grid { grid-template-columns: 1fr; } }

  /* ---- LANGUAGE + EDUCATIONAL EXPANSIONS ---- */
  .nav-actions { display:flex; align-items:center; gap:10px; margin-left:auto; }
  .lang-switch { display:inline-flex; border:1px solid var(--border); background:var(--panel); height:34px; }
  .lang-switch button { border:0; background:transparent; padding:0 10px; font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.65rem; letter-spacing:.08em; color:var(--muted); cursor:pointer; }
  .lang-switch button.active { background:var(--cyan); color:var(--on-accent); }
  .lang-en { display:none !important; }
  body.site-lang-en .lang-es { display:none !important; }
  body.site-lang-en .lang-en { display:revert !important; }
  body.site-lang-en .lang-switch button[data-lang="en"], body.site-lang-es .lang-switch button[data-lang="es"] { background:var(--cyan); color:var(--on-accent); }
  .microcopy { display:block; margin-top:6px; font-size:.72rem; color:var(--muted); line-height:1.55; }
  .notice-soft { margin:14px 0; padding:12px 14px; border-left:3px solid var(--cyan); background:var(--blue-dim); color:var(--text); font-size:.82rem; line-height:1.6; }
  .card-detail { margin-top:16px; padding-top:14px; border-top:1px solid var(--border); display:grid; gap:10px; }
  .detail-row { font-size:.82rem; color:var(--muted); line-height:1.55; }
  .detail-row strong { color:var(--white); }
  .tech-table { width:100%; border-collapse:collapse; margin-top:12px; font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:.68rem; }
  .tech-table th { text-align:left; padding:8px; color:var(--cyan); background:var(--dark); border-bottom:1px solid var(--border); }
  .tech-table td { padding:8px; color:var(--text); border-bottom:1px solid var(--border); vertical-align:top; }
  .blog-thumb { height:130px; border:1px solid var(--border); background:linear-gradient(135deg, rgba(26,95,224,.14), rgba(255,255,255,.7)); display:grid; place-items:center; margin-bottom:18px; position:relative; overflow:hidden; }
  .blog-thumb::before { content:''; position:absolute; inset:18px; border:1px solid rgba(26,95,224,.2); background:radial-gradient(circle at 30% 35%, rgba(26,95,224,.22), transparent 24%), linear-gradient(90deg, transparent 49%, rgba(26,95,224,.16) 50%, transparent 51%); }
  .blog-thumb svg { position:relative; width:100%; height:100%; display:block; }
  .blog-thumb .thumb-label { font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:8px; letter-spacing:.08em; text-transform:uppercase; fill:var(--cyan); }
  .blog-thumb .thumb-line { stroke:var(--cyan); stroke-width:2; fill:none; stroke-linecap:round; stroke-linejoin:round; }
  .blog-thumb .thumb-soft { fill:rgba(26,95,224,.10); stroke:rgba(26,95,224,.35); stroke-width:1.4; }
  .blog-thumb .thumb-dot { fill:var(--cyan); }
  /* ---- EXTENDED THUMBNAIL VOCABULARY ----
     Shared drawing primitives so all 14 article illustrations read as one
     family: same stroke weights, same tint ladder, same label treatment.
     Vector only — no raster assets, so they stay sharp at any density and
     cannot stretch or blur regardless of card width. */
  .blog-thumb .thumb-line-2 { stroke:var(--cyan); stroke-width:1.3; fill:none; stroke-linecap:round; stroke-linejoin:round; opacity:.9; }
  .blog-thumb .thumb-hair { stroke:rgba(26,95,224,.16); stroke-width:1; fill:none; }
  .blog-thumb .thumb-dash { stroke:var(--cyan); stroke-width:1.3; fill:none; stroke-dasharray:3 3; stroke-linecap:round; opacity:.8; }
  .blog-thumb .thumb-plane { fill:rgba(26,95,224,.07); stroke:rgba(26,95,224,.22); stroke-width:1; }
  .blog-thumb .thumb-fill { fill:rgba(26,95,224,.16); stroke:none; }
  .blog-thumb .thumb-fill-soft { fill:rgba(26,95,224,.08); stroke:none; }
  .blog-thumb .thumb-ring { fill:none; stroke:rgba(26,95,224,.5); stroke-width:1.3; }
  .blog-thumb .thumb-node { fill:#ffffff; stroke:var(--cyan); stroke-width:1.6; }
  /* Muted tier — for pathways an article describes as NOT engaged. */
  .blog-thumb .thumb-mute { stroke:rgba(26,95,224,.3); stroke-width:1.2; fill:none; stroke-dasharray:2.5 3; }
  .blog-thumb .thumb-mute-fill { fill:rgba(26,95,224,.05); stroke:rgba(26,95,224,.22); stroke-width:1; stroke-dasharray:2.5 3; }
  .blog-thumb .thumb-cap { font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:7px; letter-spacing:.1em; text-transform:uppercase; fill:rgba(90,102,117,.9); }
  .blog-thumb span { position:relative; font-family:var(--font-space-mono, 'Space Mono'), monospace; font-size:0.65rem; letter-spacing:.12em; text-transform:uppercase; color:var(--cyan); }
  .source-links { margin-top:12px; padding-top:10px; border-top:1px solid var(--border); font-size:.72rem; line-height:1.6; color:var(--muted); }
  .source-links a { color:var(--cyan); text-decoration:none; }
  .glossary-group { margin-top:16px; }
  .glossary-group h4, .glossary-group h2.kc-sub { color:var(--cyan); }
  .glossary-list { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:8px 18px; margin-left:0 !important; list-style:none; }
  .glossary-list li { margin:0; padding:10px 0; border-bottom:1px solid var(--border); }
  @media(max-width:700px){ .nav-actions{gap:6px}.nav-cta{padding:8px 10px}.lang-switch{height:32px}.glossary-list{grid-template-columns:1fr}.tech-table{font-size:0.65rem} }

  /* ================================================================
     READABILITY & SPACING LAYER
     Additive only — raises whitespace, typographic hierarchy and
     calculator usability without touching the palette, fonts, logo,
     navigation or any calculation. Placed late so it wins on equal
     specificity, and every value is a spacing/size change only.
     ================================================================ */

  /* --- 2. Whitespace & reading rhythm --- */
  .section-desc { font-size: 1.05rem; line-height: 1.85; max-width: 640px; }
  .section-title { margin-bottom: 24px; }
  .section-label { margin-bottom: 20px; }
  .microcopy { margin-top: 8px; font-size: .78rem; line-height: 1.65; }
  .notice-soft { margin: 20px 0; padding: 16px 18px; line-height: 1.7; }
  .j-card { padding: 26px; margin-bottom: 18px; }
  .kc-card { padding: 28px; gap: 14px; }
  .kc-detail p { line-height: 1.8; }
  .kc-detail h2.kc-sub { margin: 26px 0 10px; }
  .card-detail { margin-top: 20px; padding-top: 18px; gap: 14px; }
  .detail-row { line-height: 1.7; }
  .faq-item { padding: 28px 32px; }
  .blog-card { padding: 40px; }
  .blog-title { line-height: 1.35; }

  /* --- 3. Compound cards: calmer, content-first --- */
  .peptide-card { padding: 32px; }
  .peptide-card .card-name { margin-bottom: 10px; }
  .peptide-card .card-desc { line-height: 1.75; margin-top: 4px; }
  .peptide-card .card-category { margin-bottom: 14px; }
  .peptide-card .card-benefits { line-height: 1.7; }

  /* --- 4. Educational pages: clearer hierarchy and dividers --- */
  .kc-grid { gap: 18px; }
  .glossary-list li { padding: 14px 0; }
  .glossary-group { margin-top: 26px; }
  .tech-table th, .tech-table td { padding: 11px 10px; }
  .source-links { margin-top: 18px; padding-top: 14px; line-height: 1.75; }
  /* Callout: a quieter sibling of .notice-soft for educational asides. */
  .callout {
    margin: 22px 0; padding: 18px 20px;
    background: var(--panel); border: 1px solid var(--border);
    border-left: 3px solid var(--cyan); border-radius: 0;
    color: var(--text); font-size: .9rem; line-height: 1.75;
  }
  .callout-title {
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: .68rem; letter-spacing: .12em;
    text-transform: uppercase; color: var(--cyan); margin-bottom: 8px; display: block;
  }
  .section-divider { height: 1px; background: var(--border); margin: 44px 0; border: 0; }

  /* --- 5. Calculators: bigger labels, clearer grouping, obvious actions --- */
  .calc-panel { padding: 36px; }
  .calc-row { margin-bottom: 30px; }
  .calc-label {
    font-size: .78rem;          /* was .65rem — the single biggest legibility win */
    letter-spacing: .08em;
    color: var(--text);          /* was --muted; labels are content, not captions */
    margin-bottom: 10px;
    line-height: 1.5;
  }
  .calc-input, .calc-select { padding: 14px 16px; font-size: .92rem; }
  .calc-result { padding: 24px; }
  .calc-result-label { margin-bottom: 8px; }
  .j-label { font-size: .74rem; margin-bottom: 16px; }
  .j-input { padding: 14px 16px; font-size: 1rem; }
  .j-opt { padding: 14px 12px; }
  .j-result-grid { gap: 12px; }
  .j-result-box { padding: 16px 10px; }
  .j-warn { padding: 12px 16px; font-size: .8rem; line-height: 1.6; margin-bottom: 8px; }
  .reconst-guide { gap: 22px; }
  .rg-step { gap: 16px; }
  .rg-step-text { line-height: 1.75; }
  .rg-important { padding: 20px; }
  .calc-wrapper { gap: 48px; }
  /* Primary calculator actions read as buttons, not links. */
  .calc-action {
    width: 100%; padding: 18px 20px; margin-top: 4px;
    font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: .78rem;
    letter-spacing: .12em; text-transform: uppercase; font-weight: 700;
    background: var(--cyan); color: var(--on-accent);
    border: none; cursor: pointer; transition: opacity .2s;
  }
  .calc-action:hover { opacity: .88; }

  /* --- 6. Mobile rebalance --- */
  @media (max-width: 900px) {
    .section-inner { padding: 72px 22px; }
    .calc-wrapper { gap: 32px; }
    .calc-panel { padding: 26px 20px; }
    .j-card { padding: 22px 18px; }
    .kc-card { padding: 22px; }
    .blog-card { padding: 28px 22px; }
    .peptide-card { padding: 26px 22px; }
    .faq-item { padding: 22px 20px; }
    .section-desc { font-size: 1rem; }
  }
  @media (max-width: 600px) {
    .section-inner { padding: 56px 18px; }
    .calc-panel { padding: 22px 16px; }
    .calc-row { margin-bottom: 24px; }
    .j-card { padding: 18px 16px; }
    .blog-card { padding: 24px 18px; }
    .peptide-card { padding: 22px 18px; }
    .kc-grid { gap: 14px; }
    .section-divider { margin: 32px 0; }
    /* Comfortable tap targets on touch screens. */
    .calc-input, .calc-select, .j-input { padding: 15px 14px; font-size: 1rem; }
    .j-opt, .j-toggle-btn { min-height: 46px; }
    .calc-action { padding: 17px 18px; }
    .j-conv-input { padding: 12px 12px; font-size: .9rem; }
    .mobile-drawer button { padding: 16px 22px; }
  }

  /* ---- CALCULATOR RESULT GRIDS ----
     Extracted from inline styles so media queries can reach them.
     Desktop rendering is byte-identical to the previous inline values. */
  .combo-result-card {
    background: var(--black);
    padding: 18px 24px;
    display: grid;
    grid-template-columns: 1.2fr repeat(2, 1fr);
    gap: 16px;
    align-items: center;
  }
  .calc-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
  .calc-grid-2.gap-10 { gap: 10px; }
  .calc-grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }

  @media (max-width: 600px) {
    /* Stack result cards so nothing clips or forces horizontal scrolling. */
    .combo-result-card {
      grid-template-columns: 1fr;
      gap: 10px;
      padding: 16px 18px;
    }
    .calc-grid-2, .calc-grid-2.gap-10, .calc-grid-3 { grid-template-columns: 1fr; }
  }

  /* ---- GLOBAL KEYBOARD FOCUS INDICATOR (WCAG 2.4.7) ----
     Single source of truth for focus visibility. Uses :focus-visible so mouse
     clicks stay visually unchanged while keyboard users always get a ring.
     :where() keeps specificity at 0 so it never fights component styles;
     the !important on outline is required because several component rules and
     ~104 inline-styled buttons set `outline:none` / `border:none`. */
  :where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
    outline: 2px solid var(--cyan) !important;
    outline-offset: 2px;
    border-radius: 2px;
  }
  /* Inset the ring on full-bleed controls so it is not clipped by the container. */
  :where(.faq-item, .peptide-card, .kc-card, .j-opt):focus-visible {
    outline-offset: -2px;
  }
  /* Respect users who ask for reduced motion. */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }

  /* ---- PROFESSIONAL NAVIGATION & DISCOVERY LAYER ---- */
  nav { gap: 20px; }
  .nav-logo {
    position: static;
    transform: none;
    flex: 0 0 auto;
    border: 0;
    background: none;
    cursor: pointer;
  }
  .desktop-nav {
    display: none;
    align-items: center;
    gap: 2px;
    margin-left: 22px;
  }
  .desktop-nav a {
    padding: 9px 11px;
    color: var(--muted);
    text-decoration: none;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: .64rem;
    letter-spacing: .07em;
    text-transform: uppercase;
    white-space: nowrap;
    transition: color .2s ease, background .2s ease;
  }
  .desktop-nav a:hover,
  .desktop-nav a:focus-visible,
  .desktop-nav a.active-page {
    color: var(--cyan);
    background: var(--blue-dim);
  }
  .nav-hamburger { display: flex; order: 0; }
  .mobile-drawer { visibility: hidden; pointer-events: none; }
  .mobile-drawer.open { visibility: visible; pointer-events: auto; }

  .warn-banner {
    margin-top: 72px;
    min-height: 44px;
    justify-content: center;
    color: #7c2d12;
    background: #fff7ed;
    border-color: #fed7aa;
    font-size: .69rem;
    font-weight: 700;
    line-height: 1.45;
    text-align: center;
  }
  .warn-banner + .hx-hero {
    min-height: calc(100vh - 116px);
    padding-top: 0;
  }

  .hx-feat {
    width: 100%;
    border-top: 0;
    border-left: 0;
    border-bottom: 0;
    background: transparent;
    color: inherit;
    text-align: left;
    font: inherit;
  }

  .library-tools {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin: -18px 0 34px;
  }
  .library-search-wrap { flex: 1; max-width: 520px; position: relative; }
  .library-search-wrap label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: .64rem;
    letter-spacing: .1em;
    text-transform: uppercase;
  }
  .library-search {
    width: 100%;
    min-height: 48px;
    padding: 12px 16px;
    color: var(--white);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 4px;
    font: 400 .94rem/1.4 var(--font-dm-sans, 'DM Sans'), sans-serif;
    box-shadow: var(--shadow-sm);
  }
  .library-count {
    color: var(--muted);
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: .65rem;
    letter-spacing: .08em;
    text-transform: uppercase;
    white-space: nowrap;
  }
  .library-empty {
    display: none;
    padding: 28px;
    color: var(--text);
    background: var(--panel);
    border: 1px solid var(--border);
    text-align: center;
  }

  .contact-layout {
    display: grid;
    grid-template-columns: minmax(0, 760px);
    gap: 24px;
    margin-top: 44px;
  }
  .contact-card {
    padding: 40px;
    background: var(--panel);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
  }
  .contact-card h2 {
    margin-bottom: 12px;
    color: var(--white);
    font-family: var(--font-syne, 'Syne'), sans-serif;
    font-size: 1.5rem;
    line-height: 1.25;
  }
  .contact-card p { color: var(--text); font-size: .96rem; line-height: 1.75; }
  .contact-email {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-top: 24px;
    padding: 15px 20px;
    color: var(--on-accent);
    background: var(--cyan);
    text-decoration: none;
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: .76rem;
    font-weight: 700;
    letter-spacing: .06em;
  }
  .contact-email:hover { background: #4d84ea; }
  .contact-checklist { margin: 24px 0 0; padding: 20px 0 0; border-top: 1px solid var(--border); }
  .contact-checklist strong {
    display: block;
    margin-bottom: 10px;
    color: var(--white);
    font-family: var(--font-space-mono, 'Space Mono'), monospace;
    font-size: .68rem;
    letter-spacing: .09em;
    text-transform: uppercase;
  }
  .contact-checklist ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: .88rem; }
  .contact-checklist li { margin: 5px 0; }
  @media (max-width: 1080px) {
    nav { padding: 0 24px; }
    .desktop-nav { display: none; }
    .nav-hamburger { display: flex; }
    .nav-logo { margin-left: 2px; }
  }
  @media (max-width: 720px) {
    nav { height: 64px; padding: 0 12px; gap: 8px; }
    .mobile-drawer { top: 64px; }
    .nav-hamburger { padding: 8px; }
    .nav-logo { font-size: .96rem; gap: 2px; }
    .nav-logo .brand-logo { width: 50px; height: 40px; }
    .nav-logo .brand-lockup { width: 145px; }
    .nav-logo .logo-rule { margin: 0 2px; }
    .nav-actions { gap: 4px; }
    .nav-cta { display: none; }
    .lang-switch { height: 34px; }
    .lang-switch button { min-width: 34px; padding: 0 7px; }
    .warn-banner { margin-top: 64px; min-height: 48px; padding: 8px 16px; flex-direction: row; font-size: .62rem; }
    .warn-banner + .hx-hero { min-height: auto; padding-top: 0; }
    .hx-lead { padding-top: 46px; }
    .hx-kicker { margin-bottom: 24px; }
    .library-tools { align-items: stretch; flex-direction: column; margin-top: -10px; }
    .library-count { white-space: normal; }
    .contact-layout { grid-template-columns: 1fr; margin-top: 32px; }
    .contact-card { padding: 28px 22px; }
    .contact-email { width: 100%; justify-content: center; font-size: .68rem; }
  }

  /* ================================================================
     PRE-REDESIGN AESTHETIC RESTORATION
     Restores the July 21 visual baseline while leaving the current
     content, SEO metadata, accessibility semantics, and page behavior.
     ================================================================ */

  body::before,
  #heroCanvas { display: none; }

  nav {
    gap: 0;
    padding: 0 48px;
    height: 72px;
  }
  .nav-logo {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    white-space: nowrap;
  }
  .nav-logo .brand-logo {
    width: 70px;
    height: 64px;
  }
  .nav-logo .brand-lockup { width: 190px; }
  .nav-logo .logo-rule {
    display: block;
    width: 1px;
    height: 44px;
    min-height: 0;
    align-self: auto;
    margin: 0;
    background: var(--deep);
    opacity: .72;
    flex: 0 0 auto;
  }
  .nav-logo .logo-word {
    display: inline-block !important;
    visibility: visible !important;
    opacity: 1 !important;
    width: auto !important;
    min-width: max-content;
    overflow: visible !important;
    flex: 0 0 auto;
    color: var(--deep);
    font-size: 1.4rem;
    font-weight: 700;
    line-height: 1;
    letter-spacing: -.035em;
  }
  .desktop-nav { display: none; }

  .warn-banner {
    margin-top: 72px;
    width: 100%;
    min-height: 48px;
    padding: 12px 48px;
    flex-direction: row;
    justify-content: center;
    gap: 12px;
    overflow: visible;
    color: #7c2d12;
    background: rgba(234,88,12,.08);
    border-top-color: rgba(124,45,18,.18);
    border-bottom-color: rgba(124,45,18,.18);
    font-size: .75rem;
    font-weight: 700;
    line-height: 1.55;
    text-align: center;
  }
  .warn-banner + .hx-hero {
    min-height: 100vh;
    padding-top: 0;
  }

  .hx-hero-grid {
    grid-template-columns: minmax(0, 780px);
    justify-content: start;
  }
  .hx-lead { padding: 72px 0; }
  .hx-lede { max-width: 440px; }

  #page-peptidos .peptides-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
    background: transparent;
    align-items: start;
  }
  .peptide-card {
    padding: 32px;
    border: 1px solid var(--border);
  }
  .peptide-card .card-desc { margin-bottom: 24px; }
  .peptide-card .card-benefits {
    gap: 12px;
    margin: 0 0 26px;
  }
  .peptide-card .card-benefits li {
    position: relative;
    display: block;
    padding-left: 18px;
    font-size: .88rem;
    line-height: 1.72;
  }
  .peptide-card .card-benefits li::before {
    position: absolute;
    left: 0;
    top: 0;
    font-size: 1.05rem;
    line-height: 1.4;
  }
  .peptide-card .card-detail {
    display: grid;
    gap: 14px;
    margin-top: 4px;
    padding-top: 20px;
    border-top: 1px solid var(--border);
  }
  .peptide-card .detail-row {
    color: var(--muted);
    font-size: .84rem;
    line-height: 1.72;
  }

  .blog-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
    background: transparent;
  }
  .blog-card {
    padding: 40px;
    border: 1px solid var(--border);
    border-top: 3px solid var(--blue-dim);
  }
  .blog-card.featured { grid-row: auto; }
  .blog-thumb { display: none; }

  .calc-panel {
    border-radius: 10px;
    box-shadow: var(--shadow-sm);
  }
  .calc-input,
  .calc-select,
  .j-input,
  .j-conv-input {
    min-height: 48px;
    border-radius: 6px;
  }
  .reconst-guide {
    padding: 28px;
    background: rgba(255,255,255,.55);
    border: 1px solid var(--border);
    border-radius: 10px;
  }

  .contact-layout {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    margin-top: 48px;
    text-align: center;
  }
  .contact-card {
    width: min(100%, 760px);
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
  }
  .contact-card h2 { margin-bottom: 12px; }
  .contact-email {
    padding: 18px 40px;
    color: var(--cyan);
    background: transparent;
    border: 1px solid var(--cyan);
    font-size: 1rem;
  }
  .contact-email:hover {
    color: var(--on-accent);
    background: var(--cyan);
  }
  .contact-checklist {
    max-width: 560px;
    margin: 24px auto 0;
    text-align: left;
  }

  @media (max-width: 1080px) {
    #page-peptidos .peptides-grid {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }
  }

  @media (max-width: 900px) {
    nav { height: 60px; padding: 0 16px; }
    .mobile-drawer { top: 60px; }
    .nav-logo { margin-left: 0; gap: 9px; font-size: 1.1rem; }
    .nav-logo .brand-logo { width: 57px; height: 52px; }
    .nav-logo .brand-lockup { width: 154px; }
    .nav-logo .logo-rule { height: 32px; }
    .nav-logo .logo-word { font-size: 1rem; }
    .warn-banner {
      margin-top: 60px;
      min-height: 48px;
      padding: 10px 20px;
      flex-direction: row;
      gap: 8px;
      font-size: .72rem;
    }
    .warn-banner + .hx-hero { min-height: auto; }
    .hx-hero-grid { grid-template-columns: 1fr; padding: 0 22px; }
    .hx-lead { padding: 52px 0; }
    .blog-grid { grid-template-columns: 1fr; gap: 16px; }
  }

  @media (max-width: 700px) {
    .nav-logo { gap: 8px; }
    .nav-logo .brand-logo { width: 52px; height: 47px; }
    .nav-logo .brand-lockup { width: 140px; }
    .nav-logo .logo-rule { height: 29px; }
    .nav-logo .logo-word { font-size: .94rem; }
    .nav-actions { gap: 6px; }
    .nav-cta { display: none; }
    .lang-switch { height: 44px; }
    .lang-switch button { min-width: 42px; min-height: 42px; padding: 0 8px; }
  }

  @media (max-width: 600px) {
    #page-peptidos .peptides-grid {
      grid-template-columns: 1fr;
      gap: 14px;
    }
    .reconst-guide { padding: 20px 16px; }
    .contact-email { width: auto; font-size: 1rem; }
  }

  @media (max-width: 480px) {
    .nav-logo { gap: 7px; }
    .nav-logo .logo-rule { height: 28px; }
    .nav-logo .logo-word { font-size: .86rem; }
  }



.avenbio-multipage {
  min-height: 100vh;
  color: var(--text);
  background: var(--black);
  font-family: var(--font-dm-sans, 'DM Sans'), sans-serif;
  font-weight: 300;
  line-height: 1.7;
}

.avenbio-multipage .seo-main-nav { z-index: 110; }
.avenbio-multipage .mobile-drawer { z-index: 109; }
.avenbio-multipage .desktop-nav a { text-decoration: none; }
.avenbio-multipage .mobile-drawer a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 32px;
  color: var(--muted);
  border-bottom: 1px solid var(--border);
  font-family: var(--font-space-mono, 'Space Mono'), monospace;
  font-size: .75rem;
  letter-spacing: .12em;
  line-height: 1.3;
  text-decoration: none;
  text-transform: uppercase;
  transition: color .2s, background .2s, padding-left .2s;
}
.avenbio-multipage .mobile-drawer a::before {
  content: '›';
  color: var(--cyan);
  font-size: 1.1rem;
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity .2s, transform .2s;
}
.avenbio-multipage .mobile-drawer a:hover,
.avenbio-multipage .mobile-drawer a:focus-visible {
  color: var(--white);
  background: rgba(26,95,224,.04);
  padding-left: 40px;
}
.avenbio-multipage .mobile-drawer a:hover::before,
.avenbio-multipage .mobile-drawer a:focus-visible::before { opacity: 1; transform: translateX(0); }

.avenbio-multipage .lang-switch a {
  min-width: 38px;
  height: 34px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-family: var(--font-space-mono, 'Space Mono'), monospace;
  font-size: .65rem;
  text-decoration: none;
}
.avenbio-multipage .lang-switch a.active { color: var(--on-accent); background: var(--cyan); }
.avenbio-multipage .nav-cta { display: inline-flex; align-items: center; text-decoration: none; }

.avenbio-multipage .warn-banner { margin-top: 72px; }
.avenbio-multipage .hx-hero { min-height: auto; }
.avenbio-multipage .hx-actions a,
.avenbio-multipage .hx-index a,
.avenbio-multipage .hx-feat {
  text-decoration: none;
}
.avenbio-multipage .hx-index a { display: flex; }
.avenbio-multipage .hx-feat { display: block; }
.avenbio-multipage .hx-feat:hover { background: var(--panel); }

.seo-page-hero {
  padding: 150px 48px 72px;
  border-bottom: 1px solid var(--border);
  background:
    linear-gradient(90deg, rgba(26,95,224,.045) 1px, transparent 1px),
    linear-gradient(0deg, rgba(26,95,224,.04) 1px, transparent 1px),
    var(--black);
  background-size: 44px 44px;
}
.seo-page-hero-inner,
.seo-content-inner,
.seo-footer,
.seo-breadcrumbs ol { width: min(100%, 1200px); margin-inline: auto; }
.seo-page-hero h1 {
  max-width: 920px;
  margin: 14px 0 20px;
  color: var(--white);
  font-family: var(--font-syne, 'Syne'), sans-serif;
  font-size: clamp(2.7rem, 6.5vw, 5.6rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: .98;
}
.seo-page-hero p {
  max-width: 760px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(1rem, 1.5vw, 1.12rem);
  line-height: 1.8;
}
.seo-page-label {
  color: var(--cyan);
  font-family: var(--font-space-mono, 'Space Mono'), monospace;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.seo-breadcrumbs {
  padding: 94px 48px 0;
  background: var(--black);
}
.seo-breadcrumbs ol { display: flex; flex-wrap: wrap; gap: 8px; padding: 0; list-style: none; }
.seo-breadcrumbs li {
  color: var(--muted);
  font-family: var(--font-space-mono, 'Space Mono'), monospace;
  font-size: .68rem;
  letter-spacing: .05em;
}
.seo-breadcrumbs li:not(:last-child)::after { content: '/'; margin-left: 8px; color: #8da0b4; }
.seo-breadcrumbs a { color: var(--blue); text-decoration: none; }
.seo-breadcrumbs a:hover { text-decoration: underline; text-underline-offset: 3px; }

.seo-content { padding: 72px 48px 104px; background: var(--black); }
.seo-content.shaded { background: var(--dark); }
.seo-section-heading { max-width: 780px; margin-bottom: 38px; }
.seo-section-heading h2,
.seo-prose h2 {
  margin: 10px 0 16px;
  color: var(--white);
  font-family: var(--font-syne, 'Syne'), sans-serif;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.05;
}
.seo-section-heading p,
.seo-prose p { color: var(--muted); line-height: 1.85; }

.seo-card-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  padding: 1px;
  background: var(--border);
}
.seo-card {
  min-height: 300px;
  padding: 34px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  background: var(--dark);
  color: inherit;
  text-decoration: none;
  transition: background .2s;
}
.seo-card::before {
  content: '';
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .25s;
}
.seo-card:hover,
.seo-card:focus-visible { background: var(--panel); }
.seo-card:hover::before,
.seo-card:focus-visible::before { transform: scaleX(1); }
.seo-card-kicker {
  color: var(--cyan);
  font-family: var(--font-space-mono, 'Space Mono'), monospace;
  font-size: .65rem;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.seo-card h2,
.seo-card h3 {
  margin: 34px 0 13px;
  color: var(--white);
  font-family: var(--font-syne, 'Syne'), sans-serif;
  font-size: 1.45rem;
  line-height: 1.2;
}
.seo-card p { margin: 0 0 24px; color: var(--muted); font-size: .9rem; line-height: 1.75; }
.seo-card-link {
  margin-top: auto;
  color: var(--cyan);
  font-family: var(--font-space-mono, 'Space Mono'), monospace;
  font-size: .68rem;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.seo-prose-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: clamp(48px, 8vw, 96px);
  align-items: start;
}
.seo-prose { min-width: 0; }
.seo-prose section { padding: 34px 0; border-top: 1px solid var(--border); }
.seo-prose section:first-child { padding-top: 0; border-top: 0; }
.seo-prose h2 { font-size: clamp(1.7rem, 3vw, 2.45rem); }
.seo-prose h3 { margin: 0 0 10px; font-size: 1.2rem; }
.seo-prose p { margin: 0 0 16px; }
.seo-prose ul { margin: 0; padding-left: 1.15rem; color: var(--muted); }
.seo-prose li { margin: 10px 0; padding-left: 4px; }

.seo-side-panel {
  position: sticky;
  top: 104px;
  padding: 26px;
  border: 1px solid var(--border);
  background: var(--panel);
  box-shadow: var(--shadow-sm);
}
.seo-side-panel h2 { margin: 0 0 16px; font-size: 1.15rem; }
.seo-side-panel dl { margin: 0; }
.seo-side-panel div { padding: 13px 0; border-top: 1px solid var(--border); }
.seo-side-panel dt { color: var(--muted); font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: .63rem; letter-spacing: .08em; text-transform: uppercase; }
.seo-side-panel dd { margin: 5px 0 0; color: var(--white); font-size: .9rem; line-height: 1.55; }

.seo-source-list { display: grid; gap: 10px; padding: 0; list-style: none; }
.seo-source-list a,
.seo-inline-links a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.seo-source-list a::after { content: ' ↗'; }
.seo-disclaimer {
  margin-top: 34px;
  padding: 22px;
  border: 1px solid #d9b27d;
  background: #fff8ed;
  color: #714310;
  font-size: .88rem;
  line-height: 1.7;
}

.seo-comparison { width: 100%; border-collapse: collapse; border: 1px solid var(--border); background: var(--panel); }
.seo-comparison th,
.seo-comparison td { padding: 20px; border: 1px solid var(--border); text-align: left; vertical-align: top; }
.seo-comparison th { color: var(--white); font-family: var(--font-syne, 'Syne'), sans-serif; }
.seo-comparison td { color: var(--muted); }
.seo-comparison tbody th { width: 21%; font-size: .9rem; }

.seo-faq-list { display: grid; gap: 10px; }
.seo-faq-list details { padding: 22px 24px; border: 1px solid var(--border); background: var(--panel); }
.seo-faq-list summary { color: var(--white); font-family: var(--font-syne, 'Syne'), sans-serif; font-weight: 700; cursor: pointer; }
.seo-faq-list p { margin: 14px 0 0; color: var(--muted); }

.seo-calculator-shell { display: grid; gap: 24px; }
.seo-calculator-panel { padding: clamp(24px, 4vw, 42px); border: 1px solid var(--border); background: var(--panel); box-shadow: var(--shadow-sm); }
.seo-calculator-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.seo-field { display: grid; gap: 8px; }
.seo-field label { color: var(--white); font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: .7rem; letter-spacing: .06em; text-transform: uppercase; }
.seo-field input,
.seo-field select {
  width: 100%;
  min-height: 48px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--black);
  color: var(--white);
}
.seo-field input:focus-visible,
.seo-field select:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
.seo-calc-result-grid { margin-top: 24px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.seo-calc-result { min-height: 116px; padding: 18px; border: 1px solid var(--border); background: var(--dark); }
.seo-calc-result span { display: block; color: var(--muted); font-size: .72rem; text-transform: uppercase; }
.seo-calc-result strong { display: block; margin-top: 8px; color: var(--white); font-family: var(--font-syne, 'Syne'), sans-serif; font-size: 1.65rem; }
.seo-calc-error { margin-top: 18px; color: #a24d18; font-weight: 600; }
.seo-component-row { display: grid; grid-template-columns: minmax(0, 1fr) 130px auto; gap: 10px; margin-bottom: 10px; }
.seo-text-button { min-height: 44px; padding: 0 14px; border: 1px solid var(--border); background: var(--dark); color: var(--blue); }
.seo-primary-button { min-height: 46px; padding: 0 18px; border: 1px solid var(--deep); background: var(--cyan); color: var(--on-accent); font-weight: 700; }

.seo-contact-card { max-width: 760px; padding: clamp(28px, 5vw, 52px); border: 1px solid var(--border); background: var(--panel); }
.seo-contact-card h2 { margin: 0 0 16px; font-size: clamp(1.8rem, 4vw, 2.8rem); }
.seo-contact-card p { color: var(--muted); }
.seo-contact-email { margin-top: 22px; display: inline-flex; min-height: 48px; padding: 0 18px; align-items: center; border: 1px solid var(--cyan); color: var(--cyan); font-weight: 700; text-decoration: none; }

.seo-footer { padding: 58px 48px; display: grid; grid-template-columns: 1fr auto; gap: 22px; border-top: 1px solid var(--border); }
.seo-footer .footer-links { position: static; height: auto; padding: 0; display: flex; gap: 18px; border: 0; background: transparent; backdrop-filter: none; }
.seo-footer .footer-links a { color: var(--muted); font-family: var(--font-space-mono, 'Space Mono'), monospace; font-size: .65rem; text-decoration: none; text-transform: uppercase; }
.seo-footer .footer-links a:hover { color: var(--cyan); }
.seo-footer .footer-legal { grid-column: 1 / -1; margin: 0; padding-top: 18px; border-top: 1px solid var(--border); color: var(--muted); font-size: .72rem; }

.seo-not-found { min-height: 80vh; display: grid; place-items: center; padding: 130px 24px 70px; text-align: center; }
.seo-not-found h1 { margin: 0 0 12px; font-size: clamp(4rem, 12vw, 8rem); }
.seo-not-found p { max-width: 520px; color: var(--muted); }
.seo-not-found a { margin-top: 18px; display: inline-flex; padding: 12px 18px; border: 1px solid var(--cyan); color: var(--cyan); text-decoration: none; }

@media (max-width: 980px) {
  .seo-card-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .seo-prose-layout { grid-template-columns: 1fr; }
  .seo-side-panel { position: static; }
}

@media (max-width: 700px) {
  .avenbio-multipage .warn-banner { margin-top: 60px; }
  .seo-page-hero { padding: 118px 22px 54px; }
  .seo-breadcrumbs { padding: 82px 22px 0; }
  .seo-breadcrumbs + .seo-page-hero { padding-top: 42px; }
  .seo-content { padding: 54px 22px 78px; }
  .seo-card-grid,
  .seo-calculator-grid,
  .seo-calc-result-grid { grid-template-columns: 1fr; }
  .seo-card { min-height: 250px; padding: 26px; }
  .seo-comparison { display: block; overflow-x: auto; }
  .seo-comparison th,
  .seo-comparison td { min-width: 190px; }
  .seo-component-row { grid-template-columns: 1fr 100px; }
  .seo-component-row button { grid-column: 1 / -1; }
  .seo-footer { padding: 42px 22px; grid-template-columns: 1fr; }
  .seo-footer .footer-links { flex-wrap: wrap; }
}

@media (max-width: 460px) {
  .avenbio-multipage .seo-main-nav { padding-inline: 8px; }
  .avenbio-multipage .seo-main-nav .nav-logo {
    position: static;
    transform: none;
    min-width: 0;
    margin-left: 0;
    padding: 0;
    gap: 4px;
  }
  .avenbio-multipage .seo-main-nav .nav-logo .brand-logo { width: 38px; height: 36px; }
  .avenbio-multipage .seo-main-nav .nav-logo .brand-lockup { width: 102px; }
  .avenbio-multipage .seo-main-nav .nav-logo .logo-rule { height: 24px; }
  .avenbio-multipage .seo-main-nav .nav-logo .logo-word { font-size: .72rem; }
  .avenbio-multipage .seo-main-nav .nav-actions { gap: 4px; }
  .avenbio-multipage .seo-main-nav .nav-cta { padding-inline: 8px; font-size: .58rem; }
  .seo-page-hero h1 { font-size: 2.55rem; }
  .seo-card-grid { gap: 14px; padding: 0; background: transparent; }
  .seo-card { border: 1px solid var(--border); }
}