:root {
    --bg:        #0a0e1a;
    --bg-2:      #0e1424;
    --panel:     #131a2d;
    --panel-2:   #18203a;
    --hair:      #1f2840;
    --hair-2:    #2a3550;
    --ink:       #e8ecf2;
    --ink-2:     #c7cfdc;
    --muted:     #8a92a0;
    --muted-2:   #6a7280;
    --accent:    #8e95a4;
    --accent-2:  #aab1bf;
    --accent-ink:#0a0e1a;
    --orange:    #ee5e1e;
  }
  html[data-theme="light"] {
    --bg:        #f5f4ef;
    --bg-2:      #eceae3;
    --panel:     #ffffff;
    --panel-2:   #f8f7f1;
    --hair:      #dcdbd2;
    --hair-2:    #c7c6bd;
    --ink:       #0c1a3a;
    --ink-2:     #1f2a4a;
    --muted:     #6a7280;
    --muted-2:   #8a92a0;
    --accent:    #5a6478;
    --accent-2:  #3f4858;
    --accent-ink:#ffffff;
    --orange:    #ee5e1e;
  }

  * { box-sizing: border-box; }
  html, body { margin: 0; padding: 0; }
  body {
    background: var(--bg);
    color: var(--ink);
    font-family: 'Geist', ui-sans-serif, system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    font-size: 16px;
    overflow-x: hidden;
  }
  a { color: inherit; text-decoration: none; }
  button { font-family: inherit; cursor: pointer; }
  .mono { font-family: 'JetBrains Mono', ui-monospace, Menlo, monospace; }
  .serif { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; }

  .page { max-width: 1360px; margin: 0 auto; padding: 0 32px; }

  /* ---------- TOPBAR ---------- */
  .topbar {
    position: sticky; top: 0; z-index: 40;
    background: color-mix(in oklch, var(--bg) 88%, transparent);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--hair);
  }
  .topbar-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
  .brand { display: flex; align-items: center; gap: 10px; }
  .brand img.brand-logo { height: 26px; width: auto; display: block; }
  html[data-theme="light"] .brand .brand-logo-wrap img { filter: brightness(0); }
  .brand .product-tag {
    margin-left: 8px;
    padding: 3px 8px;
    border: 1px solid var(--hair-2);
    border-radius: 2px;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
  }

  .nav { display: flex; gap: 28px; }
  .nav a { font-size: 14px; color: var(--ink-2); transition: color .15s; }
  .nav a:hover, .nav a.active { color: var(--accent); }
  .nav a.active { font-weight: 500; }

  .nav-actions { display: flex; align-items: center; gap: 12px; }
  .btn {
    font-size: 13px;
    border: 1px solid var(--hair-2);
    background: transparent;
    color: var(--ink);
    padding: 9px 14px;
    border-radius: 2px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 0;
    transition: transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s, color .28s, background .28s, box-shadow .28s;
  }
  .btn > * { position: relative; z-index: 2; }
  .btn::after {
    content: "";
    position: absolute;
    top: 0; left: -130%;
    width: 75%; height: 100%;
    background: linear-gradient(100deg, transparent, color-mix(in oklch, var(--ink) 16%, transparent), transparent);
    transform: skewX(-20deg);
    transition: left .6s cubic-bezier(.2,.7,.3,1);
    z-index: 1;
    pointer-events: none;
  }
  .btn:hover::after { left: 135%; }
  .btn:hover {
    border-color: var(--ink-2);
    transform: translateY(-2px);
    box-shadow: 0 10px 22px -12px rgba(0,0,0,0.65);
  }
  .btn:active { transform: translateY(0); transition-duration: .05s; }
  .btn .chev { margin-left: 6px; opacity: 0.8; transition: transform .28s cubic-bezier(.2,.7,.3,1); }
  .btn:hover .chev { transform: translateX(3px); opacity: 1; }
  .btn.primary {
    background: var(--accent);
    color: var(--accent-ink);
    border-color: var(--accent);
    font-weight: 500;
  }
  .btn.primary::after {
    background: linear-gradient(100deg, transparent, rgba(255,255,255,0.5), transparent);
  }
  .btn.primary:hover {
    background: var(--accent-2);
    border-color: var(--accent-2);
    box-shadow: 0 12px 28px -8px color-mix(in oklch, var(--accent) 60%, transparent);
  }
  .btn .chev { margin-left: 6px; opacity: 0.8; transition: transform .28s cubic-bezier(.2,.7,.3,1); }
  .btn:hover .chev { transform: translateX(3px); opacity: 1; }
  @media (prefers-reduced-motion: reduce) {
    .btn, .btn::after, .btn .chev { transition: none; }
    .btn:hover { transform: none; }
  }

  .section-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--muted);
    letter-spacing: 0.04em;
    text-transform: uppercase;
    display: inline-flex; align-items: center; gap: 8px;
  }
  .section-label::before { content: ""; width: 16px; height: 1px; background: var(--muted); }

  /* ---------- HERO ---------- */
  .hero {
    padding: 96px 0 64px;
    position: relative;
    overflow: hidden;
  }
  .hero-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 64px;
    align-items: center;
  }
  .hero h1 {
    font-size: clamp(44px, 5.5vw, 84px);
    line-height: 0.98;
    letter-spacing: -0.03em;
    font-weight: 500;
    margin: 24px 0 28px;
    color: var(--ink);
  }
  .hero h1 .s { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; }
  .hero h1 em { color: var(--orange); font-style: normal; }
  .hero-sub {
    color: var(--ink-2);
    font-size: 18px;
    max-width: 560px;
    line-height: 1.6;
  }
  .hero-cta { display: flex; gap: 12px; margin-top: 32px; }
  .hero-meta {
    margin-top: 36px;
    display: flex; gap: 32px;
    font-size: 12px; color: var(--muted);
  }
  .hero-meta b {
    color: var(--ink); font-weight: 500;
    font-family: 'JetBrains Mono', monospace; font-size: 13px;
    display: block; margin-bottom: 2px;
  }

  /* ---------- HERO VISUAL: stylized lower-limb mechanical axis ---------- */
  .hero-vis {
    position: relative;
    aspect-ratio: 4/5;
    width: 100%;
    background:
      radial-gradient(ellipse 80% 60% at 50% 30%, color-mix(in oklch, var(--accent) 10%, transparent), transparent 70%),
      linear-gradient(165deg, var(--panel) 0%, var(--bg-2) 100%);
    border: 1px solid var(--hair);
    border-radius: 6px;
    overflow: hidden;
    box-shadow: 0 30px 60px -20px rgba(0,0,0,0.4);
  }
  .hero-vis svg { width: 100%; height: 100%; display: block; }
  .hero-vis .vis-meta {
    position: absolute; top: 14px; left: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px; color: var(--muted);
    text-transform: uppercase; letter-spacing: 0.05em;
  }
  .hero-vis .vis-meta-r {
    position: absolute; top: 14px; right: 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px; color: var(--orange);
    text-transform: uppercase; letter-spacing: 0.05em;
  }
  .hero-vis .vis-meta-b {
    position: absolute; bottom: 14px; left: 16px; right: 16px;
    display: flex; justify-content: space-between;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px; color: var(--muted);
  }
  .bone { fill: color-mix(in oklch, var(--ink-2) 8%, transparent); stroke: var(--ink-2); stroke-width: 1.3; }
  .joint-marker { fill: var(--orange); stroke: none; }
  .mech-axis { stroke: var(--orange); stroke-width: 1.5; stroke-dasharray: 5 3; fill: none; }
  .anat-axis { stroke: var(--accent); stroke-width: 1; stroke-dasharray: 2 3; fill: none; opacity: 0.7; }
  .ang-arc  { stroke: var(--orange); stroke-width: 1; fill: none; }
  .ang-label { fill: var(--orange); font-family: 'JetBrains Mono', monospace; font-size: 11px; font-weight: 500; }
  .measure-label { fill: var(--ink); font-family: 'JetBrains Mono', monospace; font-size: 10px; }
  .ref-line { stroke: var(--ink-2); stroke-width: 0.5; opacity: 0.5; stroke-dasharray: 2 2; }

  /* ---------- WORKFLOW STEPS ---------- */
  section.block { padding: 96px 0; }
  .block-head {
    display: grid; grid-template-columns: 1fr 2fr; gap: 64px;
    align-items: start; margin-bottom: 56px;
  }
  .block-head h2 {
    font-size: clamp(32px, 3.2vw, 48px);
    letter-spacing: -0.03em;
    line-height: 1.05;
    font-weight: 500;
    margin: 16px 0 0;
    max-width: 11ch;
  }
  .block-head .sub {
    color: var(--ink-2);
    font-size: 18px;
    max-width: 56ch;
    line-height: 1.55;
  }

  .workflow {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
    border-top: 1px solid var(--hair);
    border-bottom: 1px solid var(--hair);
  }
  .step {
    padding: 28px 24px;
    border-right: 1px solid var(--hair);
    position: relative;
  }
  .step:last-child { border-right: 0; }
  .step .step-n {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--orange);
    letter-spacing: 0.04em;
    margin-bottom: 16px;
  }
  .step h4 {
    font-size: 17px;
    letter-spacing: -0.01em;
    font-weight: 500;
    margin: 0 0 8px;
  }
  .step p {
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
    margin: 0;
  }
  .step .step-ico {
    margin-bottom: 18px;
    color: var(--accent);
  }

  /* ---------- FEATURES ---------- */
  .features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    border-top: 1px solid var(--hair);
    border-left: 1px solid var(--hair);
  }
  .feature {
    padding: 32px;
    border-right: 1px solid var(--hair);
    border-bottom: 1px solid var(--hair);
    min-height: 240px;
    display: flex; flex-direction: column; gap: 14px;
    position: relative;
    overflow: hidden;
    transition: background .2s;
  }
  .feature:hover { background: var(--panel); }
  .feature::after {
    content: "";
    position: absolute;
    top: 0; left: 0;
    width: 2px; height: 100%;
    background: var(--orange);
    transform: scaleY(0);
    transform-origin: top;
    transition: transform .3s ease;
  }
  .feature:hover::after { transform: scaleY(1); }
  .feature .idx {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--orange);
    letter-spacing: 0.04em;
  }
  .feature h3 {
    font-size: 22px;
    letter-spacing: -0.02em;
    font-weight: 500;
    margin: 0;
    line-height: 1.15;
  }
  .feature p {
    color: var(--muted);
    font-size: 14px;
    line-height: 1.55;
    margin: 0;
    max-width: 36ch;
  }
  .feature .ico {
    width: 40px; height: 40px;
    border: 1px solid var(--hair-2);
    border-radius: 3px;
    display: flex; align-items: center; justify-content: center;
    color: var(--accent);
  }

  /* ---------- IMPLANT LIBRARY STRIP ---------- */
  .implants {
    display: flex; gap: 10px; flex-wrap: wrap; margin-top: 32px;
  }
  .imp-chip {
    padding: 8px 14px;
    border: 1px solid var(--hair);
    border-radius: 2px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--ink-2);
    background: var(--panel);
  }

  /* ---------- USE CASES (split layout) ---------- */
  .usecases {
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-top: 1px solid var(--hair);
    border-left: 1px solid var(--hair);
  }
  .uc {
    padding: 40px 32px;
    border-right: 1px solid var(--hair);
    border-bottom: 1px solid var(--hair);
    min-height: 200px;
  }
  .uc .uc-tag {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    color: var(--orange);
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 12px;
  }
  .uc h3 {
    font-size: 24px;
    letter-spacing: -0.02em;
    font-weight: 500;
    margin: 0 0 12px;
  }
  .uc p {
    color: var(--ink-2);
    font-size: 14px;
    line-height: 1.6;
    margin: 0 0 16px;
    max-width: 48ch;
  }
  .uc ul {
    margin: 0; padding: 0; list-style: none;
    display: flex; flex-direction: column; gap: 6px;
  }
  .uc li {
    color: var(--muted);
    font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
    padding-left: 14px;
    position: relative;
  }
  .uc li::before {
    content: "›";
    position: absolute;
    left: 0;
    color: var(--orange);
  }

  /* ---------- INTEGRATION CALLOUT ---------- */
  .integ {
    border: 1px solid var(--hair);
    background: var(--panel);
    padding: 48px;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 48px;
    align-items: center;
    border-radius: 4px;
  }
  .integ h3 {
    font-size: 32px;
    letter-spacing: -0.025em;
    line-height: 1.1;
    font-weight: 500;
    margin: 16px 0 16px;
  }
  .integ p { color: var(--ink-2); font-size: 15px; line-height: 1.6; margin: 0 0 24px; }
  .integ-flow {
    display: flex; align-items: center; gap: 16px;
    flex-wrap: wrap;
  }
  .integ-flow .ifb {
    padding: 14px 20px;
    border: 1px solid var(--hair-2);
    border-radius: 3px;
    background: var(--bg);
    font-family: 'JetBrains Mono', monospace;
    font-size: 13px;
  }
  .integ-flow .arrow {
    color: var(--orange);
    font-family: 'JetBrains Mono', monospace;
    font-size: 16px;
  }

  /* ---------- CTA ---------- */
  .cta-block {
    position: relative;
    padding: 96px 64px;
    border: 1px solid var(--hair);
    background: var(--panel);
    overflow: hidden;
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 48px;
    align-items: end;
    border-radius: 4px;
  }
  .cta-block h2 {
    font-size: clamp(40px, 4vw, 64px);
    letter-spacing: -0.035em;
    line-height: 1;
    font-weight: 500;
    margin: 0;
  }
  .cta-block h2 .s { font-family: 'Instrument Serif', serif; font-style: italic; font-weight: 400; color: var(--orange); }
  .cta-side p { color: var(--ink-2); max-width: 38ch; margin: 0 0 24px; }
  .dl-row { display: flex; flex-wrap: wrap; gap: 10px; }
  .dl-btn {
    border: 1px solid var(--hair-2);
    padding: 12px 18px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 12px;
    color: var(--ink);
    background: var(--bg);
    cursor: pointer;
    display: flex; align-items: center; gap: 10px;
    position: relative;
    overflow: hidden;
    z-index: 0;
    transition: transform .28s cubic-bezier(.2,.7,.3,1), border-color .28s, color .28s, box-shadow .28s;
  }
  .dl-btn > * { position: relative; z-index: 2; }
  .dl-btn::after {
    content: "";
    position: absolute;
    top: 0; left: -130%;
    width: 70%; height: 100%;
    background: linear-gradient(100deg, transparent, color-mix(in oklch, var(--accent) 22%, transparent), transparent);
    transform: skewX(-20deg);
    transition: left .6s cubic-bezier(.2,.7,.3,1);
    z-index: 1;
    pointer-events: none;
  }
  .dl-btn:hover::after { left: 140%; }
  .dl-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 12px 26px -12px color-mix(in oklch, var(--accent) 50%, transparent);
  }
  .dl-btn:active { transform: translateY(0); transition-duration: .05s; }
  .dl-btn .os { opacity: 0.5; font-size: 10px; }

  /* ---------- FOOTER ---------- */
  footer {
    border-top: 1px solid var(--hair);
    padding: 48px 0 32px;
    margin-top: 0;
  }
  .foot-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 32px;
  }
  .foot-grid h4 {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px; color: var(--muted);
    text-transform: uppercase; letter-spacing: 0.05em;
    margin: 0 0 14px; font-weight: 500;
  }
  .foot-grid ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 8px; }
  .foot-grid a { font-size: 14px; color: var(--ink-2); }
  .foot-grid a:hover { color: var(--accent); }
  .foot-bottom {
    display: flex; justify-content: space-between; align-items: center;
    margin-top: 64px;
    padding-top: 24px;
    border-top: 1px solid var(--hair);
    color: var(--muted);
    font-size: 12px;
    font-family: 'JetBrains Mono', monospace;
  }

  /* ---------- RESPONSIVE ---------- */
  @media (max-width: 1100px) {
    .hero-grid { grid-template-columns: 1fr; gap: 40px; }
    .block-head { grid-template-columns: 1fr; gap: 16px; }
    .workflow { grid-template-columns: 1fr 1fr; }
    .features, .usecases { grid-template-columns: 1fr; }
    .integ { grid-template-columns: 1fr; padding: 32px; }
    .cta-block { grid-template-columns: 1fr; padding: 48px 32px; }
    .foot-grid { grid-template-columns: 1fr 1fr; }
  }
  /* ---------- BACKGROUND GRID ---------- */
  .ai-bg {
    position: fixed; inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
  }
  .ai-bg .ai-grid {
    position: absolute; inset: 0;
    background-image:
      radial-gradient(circle at center, var(--hair) 1px, transparent 1.5px),
      radial-gradient(circle at 50% 50%, transparent 120px, color-mix(in oklch, var(--accent) 6%, transparent) 121px, transparent 122px),
      radial-gradient(circle at 50% 50%, transparent 220px, color-mix(in oklch, var(--accent) 5%, transparent) 221px, transparent 222px),
      radial-gradient(circle at 50% 50%, transparent 340px, color-mix(in oklch, var(--accent) 4%, transparent) 341px, transparent 342px),
      radial-gradient(circle at 50% 50%, transparent 480px, color-mix(in oklch, var(--accent) 3%, transparent) 481px, transparent 482px);
    background-size: 32px 32px, 100% 100%, 100% 100%, 100% 100%, 100% 100%;
    background-position: 0 0, center, center, center, center;
    opacity: 0.7;
    mask-image: radial-gradient(ellipse 90% 75% at 50% 45%, #000 30%, transparent 90%);
    -webkit-mask-image: radial-gradient(ellipse 90% 75% at 50% 45%, #000 30%, transparent 90%);
    animation: aiGridDrift 40s linear infinite;
  }
  @keyframes aiGridDrift {
    0%   { background-position: 0 0, center, center, center, center; }
    100% { background-position: 32px 32px, center, center, center, center; }
  }
  .ai-bg .ai-vignette {
    position: absolute; inset: 0;
    background:
      radial-gradient(ellipse 60% 50% at 18% 10%, color-mix(in oklch, var(--accent) 14%, transparent), transparent 60%),
      radial-gradient(ellipse 70% 60% at 85% 90%, color-mix(in oklch, var(--accent) 10%, transparent), transparent 60%);
  }
  html[data-theme="light"] .ai-bg .ai-grid { opacity: 0.6; }
  /* Keep content above bg */
  section, footer, .page { position: relative; z-index: 1; }
  @media (prefers-reduced-motion: reduce) {
    .ai-bg .ai-grid { animation: none; }
  }


  /* ====================== MOTION / REVEAL LAYER ====================== */
  .rv{
    opacity: 0;
    transform: translateY(28px);
    transition: opacity .8s cubic-bezier(.16,.84,.34,1),
                transform .6s cubic-bezier(.2,.7,.3,1),
                box-shadow .45s, border-color .3s, background .3s, color .3s;
    transition-delay: var(--rd, 0ms);
    will-change: opacity, transform;
  }
  .rv.in{ opacity: 1; transform: none; }
  /* hover lifts (after reveal rules so they win at equal specificity) */
  .feature:hover{ transform: translateY(-5px); box-shadow: 0 26px 50px -32px rgba(0,0,0,.85); z-index: 2; }
  .feature .ico{ transition: transform .45s cubic-bezier(.2,.7,.3,1), color .3s, border-color .3s, background .3s; }
  .feature:hover .ico{ transform: translateY(-2px) scale(1.1) rotate(-6deg); color: var(--accent); border-color: var(--accent); background: color-mix(in oklch, var(--accent) 14%, transparent); }
  .tier:hover{ transform: translateY(-7px); box-shadow: 0 30px 60px -34px rgba(0,0,0,.85); z-index: 2; }
  .lic-card:hover{ transform: translateY(-5px); border-color: var(--accent); box-shadow: 0 22px 44px -28px color-mix(in oklch, var(--accent) 70%, black); }
  .lic-card .lic-storage{ transition: transform .4s cubic-bezier(.2,.7,.3,1); display: inline-block; }
  .lic-card:hover .lic-storage{ transform: scale(1.14); }
  .tier.featured{ animation: featuredPulse 3.8s ease-in-out infinite; }
  .tier.featured:hover{ animation: none; }
  @keyframes featuredPulse{ 0%,100%{ box-shadow: 0 0 0 0 transparent; } 50%{ box-shadow: 0 0 36px -10px color-mix(in oklch, var(--orange) 45%, transparent); } }


  /* ====================== FUTURISTIC FX ====================== */
  .feature, .lic-card { overflow: hidden; }
  .fx-glow{
    position:absolute; width:300px; height:300px; left:0; top:0;
    margin:-150px 0 0 -150px; border-radius:50%;
    pointer-events:none; opacity:0; z-index:0;
    background: radial-gradient(circle, color-mix(in oklch, var(--accent) 26%, transparent), transparent 66%);
    transition: opacity .35s ease;
    transform: translate(var(--gx,0px), var(--gy,0px));
  }
  .feature:hover .fx-glow, .lic-card:hover .fx-glow{ opacity:.5; }
  .feature > *:not(.fx-glow), .lic-card > *:not(.fx-glow){ position:relative; z-index:1; }

  /* scanning beam over illustration panels */
  .fx-scan{ position:absolute; inset:0; overflow:hidden; pointer-events:none; z-index:3; border-radius:inherit; }
  .fx-scan::before{
    content:""; position:absolute; left:0; right:0; height:110px;
    background: linear-gradient(to top, color-mix(in oklch, var(--accent) 18%, transparent), transparent);
    animation: fxScanGlow 6.5s cubic-bezier(.45,0,.5,1) infinite;
  }
  .fx-scan::after{
    content:""; position:absolute; left:0; right:0; height:1.5px;
    background: color-mix(in oklch, var(--accent) 60%, transparent);
    box-shadow: 0 0 16px 2px color-mix(in oklch, var(--accent) 38%, transparent);
    animation: fxScanLine 6.5s cubic-bezier(.45,0,.5,1) infinite;
  }
  @keyframes fxScanLine{ 0%{ top:-3%; opacity:0; } 9%{ opacity:1; } 90%{ opacity:1; } 100%{ top:103%; opacity:0; } }
  @keyframes fxScanGlow{ 0%{ top:-114px; opacity:0; } 11%{ opacity:1; } 88%{ opacity:1; } 100%{ top:100%; opacity:0; } }

  /* running accent on the featured tier's top edge */
  .tier.featured::after{
    content:""; position:absolute; top:0; left:0; right:0; height:2px;
    background: linear-gradient(90deg, transparent 0%, var(--orange) 50%, transparent 100%);
    background-size: 55% 100%; background-repeat:no-repeat;
    animation: fxBorderRun 3.4s linear infinite; pointer-events:none;
  }
  @keyframes fxBorderRun{ 0%{ background-position:-60% 0; } 100%{ background-position:160% 0; } }

  @media (prefers-reduced-motion: reduce){
    .fx-scan, .tier.featured::after{ animation:none; display:none; }
  }


  /* ---------- PRICING TIERS ---------- */
  .billing-toggle { display:inline-flex; align-items:center; gap:0; border:1px solid var(--hair); border-radius:999px; padding:4px; background:var(--panel); margin-top:20px; font-family:'JetBrains Mono',monospace; }
  .billing-toggle button { background:transparent; border:0; padding:8px 18px; font-family:inherit; font-size:11px; letter-spacing:0.08em; text-transform:uppercase; color:var(--muted); cursor:pointer; border-radius:999px; transition:background .15s,color .15s; display:inline-flex; align-items:center; gap:8px; }
  .billing-toggle button.active { background:var(--ink); color:var(--bg); }
  .billing-toggle .save-tag { font-size:9px; background:color-mix(in oklch, var(--orange) 18%, transparent); color:var(--orange); padding:2px 6px; border-radius:999px; letter-spacing:0.06em; }
  .billing-toggle button.active .save-tag { background:color-mix(in oklch, var(--orange) 90%, var(--bg)); color:#fff; }
  .tiers { display:grid; grid-template-columns:repeat(3,1fr); gap:0; border:1px solid var(--hair); background:var(--panel); border-radius:4px; overflow:hidden; }
  .tier { padding:36px 32px; border-right:1px solid var(--hair); display:flex; flex-direction:column; }
  .tier:last-child { border-right:0; }
  .tier.featured { background:color-mix(in oklch, var(--orange) 6%, var(--panel)); position:relative; }
  .tier.featured::before { content:"MOST POPULAR"; position:absolute; top:12px; right:16px; font-family:'JetBrains Mono',monospace; font-size:9px; letter-spacing:0.1em; color:var(--orange); }
  .tier .tier-name { font-family:'JetBrains Mono',monospace; font-size:11px; color:var(--muted); text-transform:uppercase; letter-spacing:0.06em; margin-bottom:8px; }
  .tier .tier-price { font-size:36px; letter-spacing:-0.03em; font-weight:500; margin:0 0 6px; }
  .tier .tier-price .u { font-size:14px; color:var(--muted); font-weight:400; margin-left:4px; }
  .tier .tier-note { font-family:'JetBrains Mono',monospace; font-size:10px; letter-spacing:0.02em; color:var(--orange); margin:-2px 0 14px; display:none; }
  .tiers[data-billing="perpetual"] .tier-note { display:block; }
  .tier .tier-desc { color:var(--ink-2); font-size:14px; margin:0 0 24px; }
  .tier ul { list-style:none; padding:0; margin:0 0 28px; display:flex; flex-direction:column; gap:10px; flex:1; }
  .tier li { font-size:13px; color:var(--ink-2); padding-left:22px; position:relative; line-height:1.5; }
  .tier li::before { content:"\2713"; position:absolute; left:0; color:var(--orange); font-weight:500; }
  @media (max-width:900px){ .tiers { grid-template-columns:1fr; } .tier { border-right:0; border-bottom:1px solid var(--hair); } .tier:last-child { border-bottom:0; } }


  /* ===== PRICING CONFIGURATOR ===== */
  .cfg-head { max-width: 760px; margin-bottom: 44px; }
  .cfg-title { font-size: clamp(34px, 4.6vw, 62px); letter-spacing: -0.035em; line-height: 1.02; font-weight: 600; margin: 18px 0 18px; }
  .cfg-title .accent { color: var(--orange); }
  .cfg-lede { color: var(--ink-2); font-size: 17px; line-height: 1.6; max-width: 62ch; margin: 0; }
  .cfg-grid { display: grid; grid-template-columns: 1fr 384px; gap: 32px; align-items: start; }
  .cfg-main { display: flex; flex-direction: column; gap: 20px; }
  .cfg-controls { display: grid; grid-template-columns: repeat(3, auto); gap: 28px; padding: 22px 26px; border: 1px solid var(--hair); border-radius: 8px; background: var(--panel); align-items: end; justify-content: start; }
  .cfg-control-label { font-family: 'JetBrains Mono', monospace; font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 9px; }
  .seg { display: inline-flex; border: 1px solid var(--hair-2); border-radius: 999px; padding: 3px; gap: 2px; }
  .seg-btn { background: transparent; border: 0; padding: 8px 15px; font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: 0.03em; color: var(--ink-2); cursor: pointer; border-radius: 999px; transition: background .15s, color .15s; display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }
  .seg-btn:hover { color: var(--ink); }
  .seg-btn.active { background: var(--ink); color: var(--bg); }
  .seg-tag { font-size: 9px; color: #fff; background: var(--orange); padding: 2px 5px; border-radius: 999px; letter-spacing: 0.04em; line-height: 1; }
  .seg-btn.active .seg-tag { color: #fff; background: var(--orange); }
  .qty { display: inline-flex; align-items: center; border: 1px solid var(--hair-2); border-radius: 999px; overflow: hidden; }
  .qty-btn { background: transparent; border: 0; width: 40px; height: 40px; color: var(--ink); font-size: 18px; cursor: pointer; transition: background .15s; }
  .qty-btn:hover { background: var(--panel-2); }
  .qty-val { width: 48px; text-align: center; background: transparent; border: 0; color: var(--ink); font-family: 'JetBrains Mono', monospace; font-size: 15px; font-weight: 600; pointer-events: none; }
  .prod-list { display: flex; flex-direction: column; gap: 14px; }
  .prod { display: block; border: 1px solid var(--hair); border-radius: 8px; background: var(--panel); cursor: pointer; transition: border-color .2s, background .2s, box-shadow .2s; position: relative; }
  .prod:hover { border-color: var(--hair-2); }
  .prod .prod-check { position: absolute; left: 22px; top: 25px; width: 19px; height: 19px; accent-color: var(--orange); cursor: pointer; }
  .prod-body { padding: 22px 24px 22px 60px; }
  .prod-top { display: flex; justify-content: space-between; gap: 20px; align-items: flex-start; }
  .prod-name { font-size: 19px; font-weight: 600; letter-spacing: -0.01em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
  .prod-badge { font-family: 'JetBrains Mono', monospace; font-size: 9px; letter-spacing: 0.08em; color: var(--orange); border: 1px solid color-mix(in oklch, var(--orange) 40%, transparent); padding: 2px 7px; border-radius: 999px; font-weight: 500; }
  .prod-badge.plug { color: var(--muted); border-color: var(--hair-2); }
  .prod-desc { color: var(--ink-2); font-size: 14px; line-height: 1.55; margin-top: 7px; max-width: 54ch; }
  .prod-price { text-align: right; white-space: nowrap; }
  .pp-amt { font-size: 25px; font-weight: 700; letter-spacing: -0.02em; }
  .pp-unit { display: block; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted); margin-top: 3px; }
  .prod.sel { border-color: var(--orange); background: color-mix(in oklch, var(--orange) 6%, var(--panel)); }
  .prod.locked { opacity: 0.4; pointer-events: none; }
  .prod-lock { display: none; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--orange); margin-top: 12px; letter-spacing: 0.03em; }
  .prod.locked .prod-lock { display: block; }
  .cfg-fine { color: var(--muted); font-size: 12.5px; line-height: 1.6; margin: 4px 2px 0; max-width: 60ch; }
  .cfg-summary { position: sticky; top: 96px; }
  .sum-card { border: 1px solid var(--hair); border-radius: 8px; background: var(--panel); padding: 26px 24px; }
  .sum-head { font-size: 18px; font-weight: 600; letter-spacing: -0.01em; }
  .sum-meta { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); margin-top: 5px; }
  .sum-lines { margin: 22px 0 16px; display: flex; flex-direction: column; gap: 13px; border-bottom: 1px solid var(--hair); padding-bottom: 18px; }
  .sum-line { display: flex; justify-content: space-between; gap: 12px; font-size: 14px; }
  .sum-line .sl-name { color: var(--ink); }
  .sum-line .sl-sub { display: block; color: var(--muted); font-family: 'JetBrains Mono', monospace; font-size: 10px; margin-top: 3px; }
  .sum-line .sl-amt { color: var(--ink); white-space: nowrap; font-variant-numeric: tabular-nums; font-weight: 500; }
  .sum-empty { color: var(--muted); font-size: 13px; line-height: 1.5; }
  .sum-row { display: flex; justify-content: space-between; font-size: 14px; color: var(--ink-2); margin-top: 10px; font-variant-numeric: tabular-nums; }
  .sum-row.total { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--hair); font-size: 16px; color: var(--ink); font-weight: 600; align-items: baseline; }
  .sum-row.total #sum-total { font-size: 25px; font-weight: 700; letter-spacing: -0.02em; }
  .sum-suffix { font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--muted); font-weight: 400; }
  .sum-cta { width: 100%; justify-content: center; margin-top: 22px; padding: 13px; opacity: 0.55; cursor: not-allowed; }
  .sum-note { text-align: center; font-family: 'JetBrains Mono', monospace; font-size: 10px; color: var(--muted); margin-top: 12px; }
  @media (max-width: 980px) {
    .cfg-grid { grid-template-columns: 1fr; }
    .cfg-summary { position: static; }
    .cfg-controls { grid-template-columns: 1fr; gap: 18px; justify-items: start; }
  }


  /* ---------- MOBILE NAV + PHONE LAYOUT ---------- */
  .nav-toggle {
    display: none;
    align-items: center; justify-content: center;
    width: 40px; height: 40px; padding: 0; margin-left: 4px;
    background: transparent; color: var(--ink);
    border: 1px solid var(--hair-2); border-radius: 2px; cursor: pointer;
  }
  .nav-toggle .bars { position: relative; width: 18px; height: 12px; }
  .nav-toggle .bars span { position: absolute; left: 0; right: 0; height: 1.5px; background: currentColor; transition: transform .25s, opacity .2s; }
  .nav-toggle .bars span:nth-child(1) { top: 0; }
  .nav-toggle .bars span:nth-child(2) { top: 5px; }
  .nav-toggle .bars span:nth-child(3) { top: 10px; }
  .topbar.nav-open .nav-toggle .bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
  .topbar.nav-open .nav-toggle .bars span:nth-child(2) { opacity: 0; }
  .topbar.nav-open .nav-toggle .bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }
  @media (max-width: 860px) {
    .nav-toggle { display: inline-flex; }
    .nav {
      display: none;
      position: absolute; top: 100%; left: 0; right: 0;
      flex-direction: column; gap: 0;
      background: color-mix(in oklch, var(--bg) 97%, transparent);
      backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--hair);
      padding: 6px 32px 18px;
    }
    .topbar.nav-open .nav { display: flex; }
    .nav a { padding: 14px 2px; font-size: 16px; border-bottom: 1px solid var(--hair); }
    .nav a:last-child { border-bottom: 0; }
    .nav-actions .btn { white-space: nowrap; }
    .nav-actions .btn:not(.primary) { display: none; }
    .nav-actions .btn.primary { padding: 9px 13px; }
  }
  @media (max-width: 640px) {
    .page { padding: 0 20px; }
    .hero { padding: 52px 0 36px; }
    section.block { padding: 56px 0; }
    .hero-sub, .block-head .sub { font-size: 16px; }
    .hero-cta { flex-wrap: wrap; }
    .hero-meta { flex-wrap: wrap; gap: 16px 26px; }
    .workflow { grid-template-columns: 1fr; }
    .workflow .step { border-right: 0; border-bottom: 1px solid var(--hair); }
    .workflow .step:last-child { border-bottom: 0; }
  }
  @media (max-width: 560px) {
    .stats { grid-template-columns: 1fr; }
    .stat { border-right: 0; border-bottom: 1px solid var(--hair); padding: 22px 20px; }
    .stat:last-child { border-bottom: 0; }
    .compliance { grid-template-columns: 1fr; }
    .comp-cell { border-right: 0; border-bottom: 1px solid var(--hair); padding: 22px 20px; }
    .comp-cell:last-child { border-bottom: 0; }
    .billing-toggle { display: flex; flex-wrap: wrap; max-width: 100%; }
    .billing-toggle button { flex: 1 1 auto; justify-content: center; }
    .cfg-controls { padding: 18px 16px; gap: 18px; }
    .seg { flex-wrap: wrap; }
    .prod-body { padding: 20px 18px 20px 50px; }
    .prod .prod-check { left: 16px; }
  }
  @media (max-width: 480px) {
    .topbar-inner { height: 64px; }
    .brand .product-tag, .brand .tag { display: none; }
    .brand img.brand-logo { height: 24px !important; }
    .nav-actions { gap: 8px; }
    .nav-actions .btn.primary { padding: 8px 11px; font-size: 12px; }
    .foot-grid { grid-template-columns: 1fr; }
  }



  /* ===== kinetic headline ===== */
  .cfg-title { position: relative; overflow: visible; isolation: isolate; }
  .cfg-title .accent { position: relative; animation: accentGlow 3.6s ease-in-out infinite; }
  @keyframes accentGlow {
    0%,100% { text-shadow: 0 0 0 transparent; }
    50% { text-shadow: 0 0 26px color-mix(in oklch, var(--orange) 55%, transparent),
                       0 0 60px color-mix(in oklch, var(--orange) 28%, transparent); }
  }
  .cfg-title .accent::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -.06em; height: 3px;
    background: linear-gradient(90deg, transparent, var(--orange), transparent);
    background-size: 45% 100%; background-repeat: no-repeat;
    box-shadow: 0 0 12px color-mix(in oklch, var(--orange) 60%, transparent);
    animation: accentScan 3.4s linear infinite;
  }
  @keyframes accentScan { 0% { background-position: -50% 0; } 100% { background-position: 150% 0; } }

  /* ===== live status chip on the eyebrow ===== */
  .hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; }
  .hero-eyebrow .section-label.nodash::before { display: none; }
  .hero-eyebrow .live-dot {
    width: 7px; height: 7px; border-radius: 50%; display: inline-block;
    background: var(--ok, #3fbf78);
    animation: livePulse 2.2s ease-out infinite;
  }
  @keyframes livePulse {
    0% { box-shadow: 0 0 0 0 color-mix(in oklch, var(--ok,#3fbf78) 70%, transparent); }
    70% { box-shadow: 0 0 0 7px transparent; }
    100% { box-shadow: 0 0 0 0 transparent; }
  }

  /* ===== terminal caret on indices ===== */
  .feature .idx::after, .step-n::after { content: "_"; margin-left: 2px; animation: caretBlink 1.1s steps(1) infinite; }
  @keyframes caretBlink { 0%,49% { opacity: 1; } 50%,100% { opacity: 0; } }

  @media (prefers-reduced-motion: reduce) {
    .cfg-title::after, .cfg-title .accent, .cfg-title .accent::after,
    .hero-eyebrow .live-dot, .feature .idx::after, .step-n::after { animation: none; }
    .feature .idx::after, .step-n::after { opacity: 0; }
  }



  /* ===== LEGAL / DOC PAGES ===== */
  .legal { padding: 56px 0 96px; }
  .legal-head { max-width: 760px; }
  .legal-head h1 { font-size: clamp(38px,5vw,60px); letter-spacing:-0.03em; line-height:1.03; font-weight:500; margin:16px 0 0; }
  .legal-head .updated { font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--muted); margin:16px 0 0; letter-spacing:0.03em; }
  .legal-grid { display:grid; grid-template-columns:230px 1fr; gap:56px; margin-top:52px; align-items:start; }
  .toc { position:sticky; top:96px; display:flex; flex-direction:column; gap:2px; }
  .toc a { font-family:'JetBrains Mono',monospace; font-size:12px; color:var(--muted); padding:7px 0 7px 16px; border-left:1px solid var(--hair); transition:color .15s, border-color .15s; }
  .toc a:hover { color:var(--ink); border-left-color:var(--accent); }
  .legal-body { max-width: 760px; }
  .legal-body .lead { font-size:18px; color:var(--ink-2); line-height:1.6; margin:0 0 8px; }
  .legal-body h2 { font-size:20px; font-weight:500; letter-spacing:-0.01em; margin:40px 0 12px; scroll-margin-top:96px; color:var(--ink); }
  .legal-body h2:first-of-type { margin-top:32px; }
  .legal-body p { color:var(--ink-2); font-size:15px; line-height:1.7; margin:0 0 14px; }
  .legal-body ul { margin:0 0 14px; padding:0; list-style:none; display:flex; flex-direction:column; gap:10px; }
  .legal-body li { position:relative; padding-left:22px; color:var(--ink-2); font-size:15px; line-height:1.6; }
  .legal-body li::before { content:""; position:absolute; left:2px; top:9px; width:6px; height:6px; background:var(--orange); border-radius:50%; }
  .legal-body a { color:var(--accent); text-decoration:underline; text-underline-offset:2px; }
  .legal-body a:hover { color:var(--orange); }
  .legal-body strong { color:var(--ink); font-weight:600; }
  .foot-legal { display:flex; gap:8px; align-items:center; }
  .foot-legal a:hover { color:var(--accent); }
  @media (max-width: 880px){
    .legal-grid { grid-template-columns:1fr; gap:28px; }
    .toc { position:static; flex-direction:row; flex-wrap:wrap; gap:4px 12px; }
    .toc a { border-left:0; padding:4px 0; }
  }