:root {
    --bg: #07060d;
    --surface: #111020;
    --surface-sunken: #0a0913;
    --text: #f5f3fb;
    --text-muted: #a49dc4;
    --line: #241f38;
    --line-strong: #3a3358;
    --blue: #3aa8ff;
    --purple: #9b4dff;
    --pink: #ff3fae;
    --cyan: #2fd0e0;
    --green: #2fe0a0;
    --amber: #ffb648;
    --heat-cold: #2fe0a0;
    --heat-mid: #ffa726;
    --heat-hot: #ff2020;
    --grad: linear-gradient(135deg, var(--blue) 0%, var(--purple) 55%, var(--pink) 100%);
    /* Starts and ends on the same blue, so a 200% tile scrolls seamlessly. */
    --grad-roll: linear-gradient(90deg, var(--blue), var(--purple), var(--pink), var(--cyan), var(--green), var(--blue));
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    position: relative;
    background: var(--bg);
    color: var(--text);
    font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
    font-size: 16px;
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
  }

  ::selection { background: var(--pink); color: #0a0913; }

  a { color: inherit; }

  [hidden] { display: none !important; }

  .wrap {
    max-width: 1060px;
    margin: 0 auto;
    padding: 0 24px 96px;
  }

  code, .mono {
    font-family: ui-monospace, "SF Mono", Menlo, monospace;
  }

  h1, h2, h3 {
    font-family: "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;
    text-wrap: balance;
    margin: 0;
    letter-spacing: -0.01em;
  }

  .grad-text {
    background: var(--grad);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  /* ---------- rolling gradient ---------- */

  /* One tile of --grad-roll is 200% of the element, and its first and last
     stop are the same color, so travelling exactly one tile loops with no
     visible seam. Two sets because a gradient *border* carries a second
     (solid, unmoving) layer for the element's own fill. */
  @keyframes gradient-roll {
    to { background-position: -200% 0; }
  }

  @keyframes gradient-roll-border {
    to { background-position: 0 0, -200% 0; }
  }

  @media (prefers-reduced-motion: no-preference) {
    /* Slow on purpose: at this speed the colour under any one point takes
       about ten seconds to change, which reads as drift rather than motion. */
    .top-strip,
    .swatch-strip,
    .hero-frame,
    .photo-frame {
      animation: gradient-roll 20s linear infinite;
    }

    .app-window,
    .video-card,
    .density-diagram-frame,
    .kit-visual {
      animation: gradient-roll-border 20s linear infinite;
    }
  }

  /* ---------- top signal strip ---------- */

  .top-strip {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--grad-roll);
    background-size: 200% 100%;
    z-index: 30;
  }

  /* ---------- ambient background ---------- */

  .ambient {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
  }

  .ambient span {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
    opacity: 0.16;
  }

  .ambient .b1 { width: 620px; height: 620px; background: var(--blue); top: -220px; left: -220px; }
  .ambient .b2 { width: 720px; height: 720px; background: var(--purple); top: 30%; right: -280px; }
  .ambient .b3 { width: 560px; height: 560px; background: var(--pink); bottom: -240px; left: 8%; }
  .ambient .b4 { width: 480px; height: 480px; background: var(--cyan); bottom: 10%; right: 4%; opacity: 0.1; }

  /* ---------- side rail nav ---------- */

  .rail {
    position: fixed;
    left: 28px;
    top: 50%;
    transform: translateY(-50%);
    display: none;
    flex-direction: column;
    gap: 3px;
    z-index: 5;
  }

  @media (min-width: 1500px) {
    .rail { display: flex; }
  }
  .rail.is-hidden { display: none; }

  .rail-item {
    padding: 7px 14px;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-muted);
    border-left: 2px solid var(--line);
    text-decoration: none;
    transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
  }

  .rail-item.active {
    color: var(--text);
    border-left-color: var(--pink);
    background: rgba(255, 63, 174, 0.07);
  }

  /* ---------- top bar ---------- */

  .topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 26px 0;
    flex-wrap: wrap;
  }

  .brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
  }

  .brand-logo {
    height: 46px;
    width: auto;
    display: block;
  }

  .team-id {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--text-muted);
  }

  .version-chip {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    color: var(--text-muted);
    border: 1px solid var(--line-strong);
    border-radius: 6px;
    padding: 5px 10px;
    white-space: nowrap;
  }

  /* ---------- LED strip motif ---------- */

  .led-strip {
    display: flex;
    gap: 9px;
    padding: 8px 0 26px;
  }

  .led {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--line-strong);
  }

  .led.on-a { background: var(--blue); box-shadow: 0 0 9px 1px var(--blue); }
  .led.on-b { background: var(--pink); box-shadow: 0 0 9px 1px var(--pink); }
  .led.on-c { background: var(--purple); box-shadow: 0 0 9px 1px var(--purple); }

  @media (prefers-reduced-motion: no-preference) {
    .led { animation: chase 3.4s ease-in-out infinite; animation-delay: calc(var(--i) * 0.14s); }
    @keyframes chase {
      0%, 30%, 82%, 100% { background: var(--line-strong); box-shadow: none; }
      8% { background: var(--blue); box-shadow: 0 0 9px 1px var(--blue); }
      16% { background: var(--purple); box-shadow: 0 0 9px 1px var(--purple); }
      24% { background: var(--pink); box-shadow: 0 0 9px 1px var(--pink); }
    }
  }

  /* ---------- hero ---------- */

  .hero-frame {
    position: relative;
    max-width: 740px;
    height: 400px;
    padding: 2px;
    border-radius: 16px;
    background: var(--grad-roll);
    background-size: 200% 100%;
    box-shadow: 0 30px 80px -30px rgba(155, 77, 255, 0.45);
    overflow: hidden;
  }

  .hero-slide {
    position: absolute;
    inset: 2px;
    width: calc(100% - 4px);
    height: calc(100% - 4px);
    object-fit: cover;
    border-radius: 14px;
    opacity: 0;
    transition: opacity 0.9s ease;
    pointer-events: none;
  }

  .hero-slide.active {
    opacity: 1;
    pointer-events: auto;
  }

  .hero h1 {
    margin-top: 30px;
    font-size: clamp(32px, 5.2vw, 46px);
    font-weight: 700;
    line-height: 1.1;
  }

  .hero .lede {
    margin-top: 16px;
    max-width: 58ch;
    font-size: 17px;
    color: var(--text-muted);
  }

  .cta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 26px;
  }

  .btn {
    font-family: "SF Pro Display", -apple-system, sans-serif;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    padding: 11px 18px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid var(--line-strong);
    color: var(--text);
    transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease, background 0.15s ease;
  }

  .btn:hover { border-color: var(--pink); color: var(--pink); }
  .btn:focus-visible { outline: 2px solid var(--pink); outline-offset: 2px; }

  .btn.primary {
    background: var(--grad);
    background-clip: padding-box;
    border-color: transparent;
    color: #ffffff;
  }
  .btn.primary:hover { color: #ffffff; opacity: 0.88; transform: translateY(-1px); }

  .btn .arrow { opacity: 0.7; }

  /* ---------- swatch strip divider ---------- */

  .swatch-strip {
    display: flex;
    gap: 4px;
    margin: 44px 0 0;
    overflow: hidden;
    border-radius: 6px;
    background: var(--grad-roll);
    background-size: 200% 100%;
  }
  .swatch-strip span {
    height: 10px;
    flex: 1 1 auto;
    border-radius: 2px;
  }

  /* ---------- explainer cards ---------- */

  .explainer-head {
    margin-top: 52px;
  }
  .explainer-head h2 {
    font-size: 26px;
    font-weight: 700;
  }
  .explainer-head p {
    margin-top: 10px;
    color: var(--text-muted);
    max-width: 60ch;
  }

  /* ---------- top-feature spotlight ---------- */

  .spotlight {
    margin-top: 44px;
    background: linear-gradient(180deg, rgba(155, 77, 255, 0.1), rgba(255, 63, 174, 0.04));
    border: 1px solid var(--line);
    border-radius: 16px;
    padding: 30px 28px 32px;
  }

  .spotlight-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--pink);
    border: 1px solid rgba(255, 63, 174, 0.4);
    background: rgba(255, 63, 174, 0.08);
    border-radius: 20px;
    padding: 4px 10px;
    margin-bottom: 16px;
  }

  .spotlight h2 { font-size: 26px; font-weight: 700; }

  .spotlight p {
    margin-top: 12px;
    color: var(--text-muted);
    max-width: 62ch;
  }

  .gauge-demo {
    margin-top: 26px;
    display: flex;
    gap: 7px;
    align-items: flex-end;
    height: 68px;
  }

  .gauge-demo span {
    flex: 1 1 0;
    border-radius: 4px 4px 2px 2px;
  }

  .gauge-bar {
    background-image: linear-gradient(to top, var(--heat-cold) 0%, var(--heat-mid) 50%, var(--heat-hot) 85%);
    background-size: 100% 60px;
    background-position: bottom;
    background-repeat: no-repeat;
  }

  .gauge-caption {
    margin-top: 12px;
    font-size: 12.5px;
    color: var(--text-muted);
  }

  .explainer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 22px;
  }

  @media (max-width: 700px) {
    .explainer-grid { grid-template-columns: 1fr; }
  }

  .explainer-card {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 24px 22px;
    display: flex;
    flex-direction: column;
  }

  .explainer-card .kicker {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 14px;
  }

  .explainer-card .kicker .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
  }

  .explainer-card h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
  }

  .explainer-card p {
    margin: 0;
    font-size: 14px;
    color: var(--text-muted);
    flex: 1;
  }

  .explainer-card .card-link {
    margin-top: 16px;
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    color: var(--text);
  }
  .explainer-card .card-link:hover { color: var(--pink); }

  /* ---------- module / panel cards ---------- */

  .module {
    position: relative;
    margin-top: 44px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 26px 28px 30px;
  }

  .panel-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    margin: -2px 0 20px;
  }

  .panel-bar .dot { width: 8px; height: 8px; border-radius: 50%; }
  .panel-bar .dot-blue { background: var(--blue); }
  .panel-bar .dot-purple { background: var(--purple); }
  .panel-bar .dot-pink { background: var(--pink); }

  .panel-bar .slug {
    margin-left: 8px;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--text-muted);
  }

  .module h2 {
    font-size: 24px;
    font-weight: 700;
  }

  .module p {
    color: var(--text-muted);
    max-width: 62ch;
  }

  .module ul {
    margin: 18px 0 0;
    padding: 0;
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .module li {
    padding-left: 18px;
    position: relative;
    font-size: 15px;
  }

  .module li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 9px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
  }

  .module li:nth-child(4n+1)::before { background: var(--blue); }
  .module li:nth-child(4n+2)::before { background: var(--purple); }
  .module li:nth-child(4n+3)::before { background: var(--pink); }
  .module li:nth-child(4n+4)::before { background: var(--cyan); }

  .stat-callout {
    margin-top: 22px;
    padding: 16px 18px;
    background: var(--surface-sunken);
    border: 1px solid var(--line);
    border-left: 3px solid var(--green);
    border-radius: 10px;
    display: flex;
    align-items: baseline;
    gap: 14px;
    flex-wrap: wrap;
  }

  .stat-callout .label {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  .stat-callout .value {
    font-weight: 700;
    font-size: 19px;
    color: var(--text);
    font-variant-numeric: tabular-nums;
  }

  .sale-banner {
    margin-top: 22px;
    padding: 14px 18px;
    background: var(--surface-sunken);
    border: 1px solid var(--line);
    border-left: 3px solid var(--pink);
    border-radius: 10px;
    display: flex;
    align-items: baseline;
    gap: 12px;
    flex-wrap: wrap;
  }

  .sale-banner .label {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--pink);
  }

  .sale-banner .value {
    font-size: 15px;
    color: var(--text);
  }

  .buy-confirm {
    margin-top: 8px;
    padding: 48px 24px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
  }

  .buy-confirm-check {
    color: var(--green);
    margin-bottom: 8px;
  }

  .buy-confirm h3 {
    font-size: 22px;
  }

  .buy-confirm p {
    color: var(--text-muted);
    margin: 0 0 14px;
  }

  /* ---------- app window (editor screenshots + photos) ---------- */

  .app-window {
    margin: 18px 0 0;
    border: 2px solid transparent;
    border-radius: 10px;
    overflow: hidden;
    background-image: linear-gradient(var(--surface-sunken), var(--surface-sunken)), var(--grad-roll);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    background-size: auto, 200% 100%;
  }

  .app-window-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 9px 12px;
    border-bottom: 1px solid var(--line);
  }

  .app-window-bar .dot { width: 8px; height: 8px; border-radius: 50%; }

  .app-window-title {
    margin-left: 6px;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    color: var(--text-muted);
  }

  .app-window img {
    width: 100%;
    display: block;
  }

  .app-window figcaption {
    padding: 10px 14px;
    font-size: 12.5px;
    color: var(--text-muted);
    border-top: 1px solid var(--line);
  }

  .photo-frame {
    margin-top: 18px;
    padding: 2px;
    border-radius: 14px;
    background: var(--grad-roll);
    background-size: 200% 100%;
  }
  .photo-frame img {
    width: 100%;
    display: block;
    border-radius: 12px;
  }
  .photo-caption {
    margin-top: 10px;
    font-size: 12.5px;
    color: var(--text-muted);
  }

  /* ---------- video embed ---------- */

  .video-card {
    margin-top: 18px;
    border: 2px solid transparent;
    border-radius: 12px;
    overflow: hidden;
    background-image: linear-gradient(var(--surface-sunken), var(--surface-sunken)), var(--grad-roll);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    background-size: auto, 200% 100%;
  }

  .video-card video {
    width: 100%;
    display: block;
    background: #000;
  }

  .video-card figcaption a {
    color: var(--text);
    text-decoration: underline;
  }
  .video-card figcaption a:hover { color: var(--pink); }

  .video-poster {
    position: relative;
    display: block;
    text-decoration: none;
  }

  .video-poster img {
    width: 100%;
    display: block;
  }

  .video-play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(7, 6, 13, 0.55);
    border: 1px solid rgba(255, 255, 255, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, background 0.2s ease;
  }

  .video-play svg { margin-left: 3px; }

  .video-poster:hover .video-play {
    transform: translate(-50%, -50%) scale(1.08);
    background: var(--pink);
  }

  .video-card figcaption {
    padding: 10px 14px;
    font-size: 12.5px;
    color: var(--text-muted);
    border-top: 1px solid var(--line);
  }

  /* ---------- topbar actions ---------- */

  .topbar-actions {
    display: flex;
    align-items: center;
    gap: 10px;
  }

  .btn-small {
    padding: 8px 14px;
    font-size: 13px;
  }

  /* ---------- buy summary ---------- */

  .buy-summary {
    margin-top: 22px;
    padding: 18px 20px;
    background: var(--surface-sunken);
    border: 1px solid var(--line);
    border-left: 3px solid var(--blue);
    border-radius: 10px;
  }

  .buy-summary-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
    padding: 6px 0;
  }

  .buy-summary-row.total {
    margin-top: 6px;
    padding-top: 12px;
    border-top: 1px solid var(--line);
    font-weight: 700;
    font-size: 16px;
  }

  .buy-summary-row .amount {
    font-variant-numeric: tabular-nums;
  }

  .field.qty {
    flex: 0 1 110px;
  }

  .buy-note {
    margin-top: 16px;
    font-size: 12.5px;
    color: var(--text-muted);
    max-width: 60ch;
  }

  .pay-method-toggle {
    display: flex;
    gap: 8px;
    margin-top: 24px;
    flex-wrap: wrap;
  }

  .pay-method-btn {
    flex: 1 1 200px;
    font-family: "SF Pro Display", -apple-system, sans-serif;
    font-size: 14px;
    font-weight: 600;
    padding: 12px 16px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    background: var(--surface-sunken);
    color: var(--text-muted);
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
  }

  .pay-method-btn:hover { color: var(--text); }

  .pay-method-btn.active {
    border-color: var(--pink);
    color: var(--text);
    background: rgba(255, 63, 174, 0.08);
  }

  .required-mark { color: var(--pink); }

  /* ---------- cart icon ---------- */

  .cart-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    border: 1px solid var(--line-strong);
    color: var(--text);
    text-decoration: none;
    flex: none;
  }
  .cart-btn:hover { border-color: var(--pink); color: var(--pink); }

  .cart-badge {
    position: absolute;
    top: -6px;
    right: -6px;
    min-width: 18px;
    height: 18px;
    padding: 0 4px;
    border-radius: 9px;
    background: var(--pink);
    color: #fff;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  .cart-badge[hidden] { display: none; }

  /* ---------- kit grid (choose a kit) ---------- */

  .kit-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 22px;
  }
  @media (max-width: 720px) { .kit-grid { grid-template-columns: 1fr; } }

  .bundle-toggle {
    display: flex;
    gap: 6px;
    margin-top: 12px;
  }
  .bundle-btn {
    flex: 1;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11.5px;
    padding: 8px 4px;
    border-radius: 8px;
    border: 1px solid var(--line-strong);
    background: var(--surface-sunken);
    color: var(--text-muted);
    cursor: pointer;
    transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
  }
  .bundle-btn:hover { color: var(--text); }
  .bundle-btn.active {
    border-color: var(--pink);
    color: var(--text);
    background: rgba(255, 63, 174, 0.08);
  }

  /* ---------- order wizard ---------- */

  .order-steps {
    display: flex;
    gap: 8px;
    align-items: center;
  }
  .order-step-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--line-strong);
  }
  .order-step-dot.done { background: var(--pink); }
  .order-step-dot.current {
    background: var(--pink);
    box-shadow: 0 0 0 3px rgba(255, 63, 174, 0.2);
  }

  .order-step-label {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  .order-pick-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-top: 22px;
  }
  @media (max-width: 720px) { .order-pick-grid { grid-template-columns: 1fr; } }

  .order-pick-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
    cursor: pointer;
    text-align: left;
    padding: 0;
    font: inherit;
    color: inherit;
    transition: border-color 0.15s ease, transform 0.15s ease;
  }
  .order-pick-card:hover { border-color: var(--pink); transform: translateY(-2px); }
  .order-pick-card .kit-visual { pointer-events: none; }

  .order-bundle-grid {
    display: flex;
    gap: 12px;
    margin-top: 22px;
    flex-wrap: wrap;
  }
  .order-bundle-card {
    flex: 1 1 160px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 20px;
    cursor: pointer;
    text-align: left;
    font: inherit;
    color: inherit;
    transition: border-color 0.15s ease, transform 0.15s ease;
  }
  .order-bundle-card:hover { border-color: var(--pink); transform: translateY(-2px); }
  .order-bundle-card .strands { font-size: 22px; font-weight: 700; }
  .order-bundle-card .price { margin-top: 6px; color: var(--text-muted); font-variant-numeric: tabular-nums; }

  .order-review {
    margin-top: 18px;
    max-width: 420px;
  }

  /* ---------- per-strand density picker ---------- */

  .strand-picker-list {
    display: flex;
    flex-direction: column;
    gap: 22px;
    margin-top: 22px;
    max-width: 420px;
  }

  .strand-picker label {
    display: block;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
  }

  .strand-picker select {
    width: 100%;
    font-family: "SF Pro Display", -apple-system, sans-serif;
    font-size: 13.5px;
    padding: 10px 12px;
    background: var(--surface-sunken);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--text);
  }
  .strand-picker select:focus-visible { outline: 2px solid var(--pink); outline-offset: 1px; }

  .density-diagram-frame {
    margin-top: 10px;
    padding: 8px;
    border-radius: 8px;
    border: 2px solid transparent;
    background-image: linear-gradient(#fff, #fff), var(--grad-roll);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    background-size: auto, 200% 100%;
  }
  .density-diagram {
    width: 100%;
    display: block;
    border-radius: 4px;
  }

  .kit-card {
    display: flex;
    flex-direction: column;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 14px;
    overflow: hidden;
  }

  .kit-visual {
    height: 110px;
    margin: 10px 10px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    overflow: hidden;
    border: 2px solid transparent;
    border-radius: 10px;
    background-image: linear-gradient(var(--surface-sunken), var(--surface-sunken)), var(--grad-roll);
    background-origin: border-box;
    background-clip: padding-box, border-box;
    background-size: auto, 200% 100%;
  }

  .kit-visual img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
  }

  .kit-visual .strand {
    display: flex;
    gap: 3px;
  }
  .kit-visual .strand span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
  }

  .kit-body {
    padding: 16px 18px 18px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
  }

  .kit-name { font-size: 16px; font-weight: 700; }
  .kit-spec {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11.5px;
    color: var(--text-muted);
  }
  .kit-blurb { font-size: 13.5px; color: var(--text-muted); flex: 1; }
  .kit-price {
    font-weight: 700;
    font-size: 16px;
    font-variant-numeric: tabular-nums;
    display: flex;
    align-items: baseline;
    gap: 7px;
  }
  .price-was {
    font-weight: 400;
    font-size: 0.78em;
    color: var(--text-muted);
    text-decoration: line-through;
  }
  .price-now { color: var(--pink); }

  .kit-detail-link {
    font-size: 12.5px;
    color: var(--text-muted);
    text-decoration: none;
  }
  .kit-detail-link:hover { color: var(--pink); }

  .qty-stepper {
    display: flex;
    align-items: stretch;
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    overflow: hidden;
  }
  .qty-stepper button {
    width: 32px;
    border: none;
    background: var(--surface-sunken);
    color: var(--text);
    font-size: 16px;
    cursor: pointer;
  }
  .qty-stepper button:hover { background: var(--line); }
  .qty-stepper input {
    width: 40px;
    border: none;
    background: transparent;
    color: var(--text);
    text-align: center;
    font-variant-numeric: tabular-nums;
    font-size: 14px;
  }

  .kit-add-row {
    display: flex;
    gap: 8px;
    align-items: stretch;
    margin-top: 4px;
  }
  .kit-add-row .btn { flex: 1; justify-content: center; }

  /* ---------- kit detail page ---------- */

  .kit-detail-visual {
    height: 220px;
    border-radius: 14px;
  }

  .kit-detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    align-items: start;
    margin-top: 8px;
  }
  @media (max-width: 720px) { .kit-detail-grid { grid-template-columns: 1fr; } }

  .density-pickers {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 18px;
  }
  .density-pickers .field { flex: 1 1 170px; }
  .density-pickers select {
    width: 100%;
    font-family: "SF Pro Display", -apple-system, sans-serif;
    font-size: 13.5px;
    padding: 10px 12px;
    background: var(--surface-sunken);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--text);
  }
  .density-pickers select:focus-visible { outline: 2px solid var(--pink); outline-offset: 1px; }

  /* ---------- cart page ---------- */

  .cart-line {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 0;
    border-top: 1px solid var(--line);
  }
  .cart-line:first-child { border-top: none; }
  .cart-line .kit-visual { width: 72px; height: 72px; flex: none; border-radius: 10px; padding: 8px; }
  .cart-line .info { flex: 1; }
  .cart-line .name { font-weight: 700; font-size: 14.5px; }
  .cart-line .unit { font-size: 12.5px; color: var(--text-muted); margin-top: 2px; }
  .cart-line .line-total {
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    min-width: 70px;
    text-align: right;
  }
  .cart-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 18px;
    line-height: 1;
    padding: 4px;
  }
  .cart-remove:hover { color: var(--pink); }

  .cart-empty {
    padding: 40px 0;
    color: var(--text-muted);
    font-size: 14px;
  }

  .cart-total-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-top: 8px;
    padding-top: 16px;
    border-top: 1px solid var(--line-strong);
    font-weight: 700;
    font-size: 18px;
  }
  .cart-total-row .amount { font-variant-numeric: tabular-nums; }

  /* ---------- reserve form ---------- */

  .reserve-form {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
  }

  .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1 1 200px;
  }

  .field label {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 11px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
  }

  .field input {
    font-family: "SF Pro Display", -apple-system, sans-serif;
    font-size: 14px;
    padding: 11px 14px;
    background: var(--surface-sunken);
    border: 1px solid var(--line-strong);
    border-radius: 8px;
    color: var(--text);
  }

  .field input:focus-visible {
    outline: 2px solid var(--pink);
    outline-offset: 1px;
  }

  .reserve-form .btn {
    align-self: flex-end;
    cursor: pointer;
  }
  .reserve-form .btn:disabled { opacity: 0.5; cursor: default; }

  .reserve-status {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
    min-height: 1.4em;
  }

  .reserve-count {
    margin-top: 26px;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.04em;
    color: var(--text-muted);
  }

  .reserve-count b {
    font-family: "SF Pro Display", sans-serif;
    color: var(--text);
    font-size: 15px;
    font-variant-numeric: tabular-nums;
  }

  /* ---------- order ticker ---------- */

  .ticker {
    margin-top: 10px;
    border-top: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    overflow: hidden;
  }
  .ticker[hidden] { display: none; }

  .ticker-track {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    padding: 9px 0;
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    color: var(--text-muted);
  }

  .ticker.anim .ticker-track {
    animation: ticker-scroll 26s linear infinite;
  }
  .ticker.anim:hover .ticker-track { animation-play-state: paused; }

  .ticker:not(.anim) .ticker-track {
    display: flex;
    flex-wrap: wrap;
    white-space: normal;
    row-gap: 6px;
  }

  .ticker-item { padding: 0 12px; }
  .ticker-dot { color: var(--line-strong); }

  @keyframes ticker-scroll {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }

  /* ---------- footer / pinout table ---------- */

  .footer {
    margin-top: 52px;
    border-top: 1px solid var(--line);
    padding-top: 24px;
  }

  .footer-label {
    font-family: ui-monospace, "SF Mono", monospace;
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 14px;
  }

  .pinout {
    display: flex;
    flex-direction: column;
  }

  .pinout a {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    text-decoration: none;
    padding: 12px 0;
    border-top: 1px solid var(--line);
    font-size: 14px;
  }

  .pinout a:first-child { border-top: none; }

  .pinout .name { font-weight: 600; }

  .pinout .url {
    font-family: ui-monospace, "SF Mono", monospace;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    direction: rtl;
    text-align: left;
  }

  .pinout a:hover .name,
  .pinout a:hover .url { color: var(--pink); }

  .credit {
    margin-top: 32px;
    font-size: 13px;
    color: var(--text-muted);
    max-width: 60ch;
  }

  @media (max-width: 520px) {
    .module { padding: 22px 20px 26px; }
    .pinout .url { display: none; }
  }

  /* ---------- orders page ---------- */

  .back-link {
    margin-top: 40px;
    display: inline-block;
    font-size: 14px;
    color: var(--text-muted);
    text-decoration: none;
  }
  .back-link:hover { color: var(--pink); }