/* Shared production CTA. Artwork and surfaces inherit the website palette. */
:root {
  --loop-button-ink: var(--bg);
  --loop-button-edge: color-mix(in srgb, var(--mint) 68%, var(--bg));
}
.loop-cta {
  --track-edge: color-mix(in srgb, var(--line) 74%, var(--muted));
  --track-shade: var(--surface); --track-face: var(--surface-hover);
  --track-highlight: var(--surface-active); --track-shadow: rgb(0 0 0 / .18);
  --action-ink: var(--bg);
}
:root[data-theme="light"] .loop-cta {
  --track-edge: color-mix(in srgb, var(--line) 85%, var(--muted));
  --track-shade: var(--line); --track-face: var(--surface);
  --track-highlight: var(--bg); --track-shadow: color-mix(in srgb, var(--line) 65%, transparent);
}
:root :is(.loop-cta, .nav) .loop-text-track { position: relative; display: block; min-width: 0; }
:root :is(.loop-cta, .nav) .loop-main-label {
  display: block; font: var(--type-weight-heading) 18px/var(--type-leading-subheading) var(--font-heading); letter-spacing: var(--type-tracking-subheading);
  transition: opacity .15s, transform .24s cubic-bezier(.22,.7,.2,1);
}
:root :is(.loop-cta, .nav) .loop-hint {
  position: absolute; inset-inline: -6px; top: 50%; transform: translateY(-50%);
  display: block; font: 400 12px/17px var(--font-body);
  letter-spacing: 0; color: var(--muted); opacity: 0; pointer-events: none;
  transition: opacity .12s;
}
:root :is(.loop-cta, .nav) .loop-hint-line { display: block; white-space: nowrap; }
:root :is(.loop-cta, .nav) .loop-letter { display: inline-block; white-space: pre; }
:root :is(.loop-cta, .nav) .loop-button[data-active="true"] .loop-main-label { opacity: 0; transform: translateY(-9px); }
:root :is(.loop-cta, .nav) .loop-button[data-active="true"] .loop-hint { opacity: 1; }
:root :is(.loop-cta, .nav) .loop-button[data-active="true"] .loop-letter {
  animation: loop-letter-hop 380ms cubic-bezier(.2,.65,.25,1) both;
  animation-delay: calc(var(--letter-index) * 11ms + 70ms);
}
@keyframes loop-letter-hop {
  0% { opacity: 0; transform: translateY(8px) scale(.92); }
  58% { opacity: 1; transform: translateY(-3px) scale(1.02); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}
:root :is(.loop-cta, .nav) .loop-glyph {
  display: block; flex: none; width: 30px; height: 30px; overflow: visible;
  color: var(--flash); stroke-width: 1.8; transition: none;
}
:root :is(.loop-cta, .nav) .loop-envelope-flap { display: none; }
:root :is(.loop-cta, .nav) .loop-action-symbol { opacity: 0; pointer-events: none; }
/* Bring the glyph closer without moving the icon box used by the pipeline. */
:root :is(.loop-cta, .nav) .loop-button .loop-glyph { translate: -6px 0; }
:root :is(.loop-cta, .nav) .loop-button:focus-visible { outline: 2px solid var(--mint); outline-offset: 4px; }
:root :is(.loop-cta, .nav) .loop-description {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0;
}
.loop-cta { position: relative; isolation: isolate; width: 100%; container-type: inline-size; margin: 0 auto; }
.loop-track { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; pointer-events: none; z-index: -1; }
.track-ribbon { fill: none; stroke-linecap: round; stroke-linejoin: round; }
.track-shadow { stroke: var(--track-shadow); stroke-width: 12; transform: translateY(6px); filter: blur(4px); }
.track-edge { stroke: var(--track-edge); stroke-width: 11; }
.track-shade { stroke: var(--track-shade); stroke-width: 9; }
.track-face { stroke: var(--track-face); stroke-width: 6; transform: translateY(-1px); }
.track-highlight { stroke: var(--track-highlight); stroke-width: 2; transform: translateY(-3px); }
.track-cuffs { stroke: var(--mint); stroke-width: 9; stroke-linecap: butt; stroke-dasharray: 6 244; stroke-dashoffset: -110; opacity: .8; }
.track-pulse { stroke: var(--mint); stroke-width: 4; stroke-dasharray: 14 1000; stroke-dashoffset: 14; opacity: 0; }
.origin-rim { fill: var(--track-face); stroke: var(--track-edge); stroke-width: 1.4; }
.origin-core { fill: var(--mint); }
.loop-services { width: 88%; margin: 0 auto; position: relative; z-index: 1; }
.loop-services .hero-services { width: 100%; margin: 0; padding: 0; }
.loop-services .pipeline-connections { opacity: 0; }
.loop-service { position: relative; display: block; min-width: 0; padding: 0; border: 0; border-radius: 18px; background: transparent; }
.loop-services .loop-service:nth-of-type(2) { transform: translateY(9%); }
.loop-services .loop-service:nth-of-type(3) { transform: translateY(19%); }
.loop-service[data-active="true"] .pipeline-tile,
.loop-cta--assistant:has(.loop-button[data-active="true"]) .pipeline-tile { translate: 0 -3px; }
.loop-service .pipeline-dock-terminal { transition: filter .2s; }
.loop-service[data-arrived="true"] .pipeline-dock-terminal { filter: drop-shadow(0 0 3px var(--mint)); }
.loop-action { position: relative; display: flex; align-items: center; padding: 28px 0 16px; justify-content: center; }
/* Keep the sun/moon behind the pipe and service artwork at every viewport size. */
:root .loop-cta .loop-theme-toggle {
  position: absolute; z-index: -2; translate: -50% -50%;
  width: 44px; height: 44px; margin: 0;
  border-radius: 50%;
}
/* Soft source fades stay still while the existing icon changes on hover. */
.loop-theme-toggle::before,
.loop-theme-toggle::after {
  content: ''; position: absolute; z-index: -1;
  inset: 1px -2px 1px -6px; border-radius: 50%;
  filter: blur(1.8px); pointer-events: none;
  transition: opacity .35s ease;
}
.loop-theme-toggle::before {
  inset: 1px -4px;
  background: radial-gradient(ellipse at 50% 50%,
    color-mix(in srgb, var(--theme-sun) 32%, transparent) 0%,
    color-mix(in srgb, var(--theme-sun) 22%, transparent) 34%,
    color-mix(in srgb, var(--theme-sun) 10%, transparent) 58%, transparent 78%);
  opacity: 0;
}
.loop-theme-toggle::after {
  background: radial-gradient(ellipse at 44% 50%,
    color-mix(in srgb, var(--flow-face) 80%, transparent) 0%,
    color-mix(in srgb, var(--flow-lit) 54%, transparent) 28%,
    color-mix(in srgb, var(--flow-lit) 20%, transparent) 52%, transparent 78%);
  opacity: .4;
}
[data-theme="light"] .loop-theme-toggle::before { opacity: .85; }
[data-theme="light"] .loop-theme-toggle::after { opacity: 0; }
.loop-theme-toggle svg { width: 40px; height: 40px; }
.loop-cta--assistant:not([data-loop-ready="true"]) > .loop-theme-toggle { visibility: hidden; }
.loop-cta--assistant:has(.chat-panel:not([hidden])) > .loop-theme-toggle { visibility: hidden; }
.loop-theme-toggle .theme-current {
  transform-origin: 12px 12px;
  transform: rotate(35deg);
  transition: transform .45s cubic-bezier(.22,.8,.25,1), opacity .2s ease;
}
[data-theme="light"] .loop-theme-toggle .theme-current { transform: rotate(0); }
.loop-theme-toggle:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }
@media (prefers-reduced-motion: reduce) {
  .loop-theme-toggle *, .loop-theme-toggle::before, .loop-theme-toggle::after { transition: none !important; }
}
:root :is(.loop-cta, .nav) .loop-button {
  width: auto; max-width: 100%; min-height: 68px; height: 68px;
  padding: 12px 12px; gap: 10px; border: 0; border-radius: 16px;
  background: transparent; box-shadow: none; overflow: visible;
}
:root :is(.loop-cta, .nav) .loop-button[data-active="true"] { box-shadow: none; }
:root :is(.loop-cta, .nav) .loop-hint { font-size: 12px; line-height: 17px; letter-spacing: 0; }
:root :is(.loop-cta, .nav) .loop-button:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; }
:root :is(.loop-cta, .nav) .loop-icon-disc {
  display: grid; place-items: center; flex: none; width: 40px; height: 40px;
  border-radius: 50%; background: transparent; box-shadow: none;
}
.loop-profile-canopy { display: flex; align-items: center; justify-content: center; padding-top: 10px; min-height: 100px; }
.loop-profile-badge { --portrait-size: 64px; --profile-gap: 10px; position: relative; display: flex; align-items: center; gap: var(--profile-gap); padding: 8px 12px 8px 8px; background: var(--bg); border-radius: 56px; box-shadow: 0 0 0 1px var(--track-edge); }
.loop-profile-trigger { display: flex; flex: none; padding: 0; border: 0; border-radius: 48px; color: inherit; background: transparent; }
.loop-profile-badge img { width: 64px; height: 64px; border-radius: 50%; object-fit: cover; object-position: 50% 35%; border: 4px solid var(--bg); background: var(--portrait-surface); box-shadow: 0 0 0 1px var(--line); }
.loop-profile-details { display: grid; gap: 4px; min-width: 0; text-align: left; }
.loop-profile-copy { min-width: 138px; }
.loop-profile-name { display: block; font: var(--type-weight-heading) 17px/var(--type-leading-subheading) var(--font-heading); letter-spacing: var(--type-tracking-subheading); }
.loop-profile-role { display: block; margin-top: 5px; color: var(--muted); font-size: 12px; }
.loop-profile-links { display: flex; align-items: center; justify-content: flex-start; gap: 0; }
.loop-profile-icon { display: grid; place-items: center start; flex: none; width: 36px; height: 42px; padding: 0; border: 0; border-radius: 50%; color: var(--muted); background: transparent; text-decoration: none; transition: color .25s ease; }
.loop-profile-icon svg { display: block; width: 20px; height: 20px; transition: transform .25s ease; transform-origin: center; }
.loop-profile-icon:is(:hover, :focus-visible) { color: var(--mint); }
.loop-profile-icon:is(:hover, :focus-visible) svg { transform: rotate(8deg) scale(1.1); }
.loop-profile-badge[data-open="true"] .loop-profile-icon { animation: loop-profile-hop 380ms cubic-bezier(.2,.65,.25,1) both; animation-delay: calc(var(--icon-index) * 85ms + 70ms); }
@keyframes loop-profile-hop {
  0% { transform: translateY(8px) scale(.92); }
  58% { transform: translateY(-3px) scale(1.02); }
  100% { transform: translateY(0) scale(1); }
}
.loop-cta--contact .loop-action { padding-top: 18px; }

/* The existing service artwork remains responsible for its own shading. */
:root[data-device] .chapter.intro .loop-cta .hero-services {
  width: 100%; margin: 0; padding: 0;
}
:root :is(.loop-cta, .nav) .loop-button {
  position: relative; display: inline-flex; align-items: center; justify-content: center; flex: none;
  box-sizing: border-box; text-align: center; color: var(--text); cursor: pointer;
  transform: none; white-space: nowrap;
}
:root :is(.loop-cta, .nav) .loop-button[hidden] { display: none; }
:root :is(.loop-cta, .nav) .loop-main-label { margin: 0; }
:root :is(.loop-cta, .nav) .loop-hint { white-space: normal; }
.loop-word { display: inline-block; white-space: nowrap; }
.loop-cta .loop-profile-name { margin: 0; }
.loop-cta .loop-profile-role { margin-top: 5px; font-size: 13px; line-height: 1.5; }
.loop-profile-icon:disabled { cursor: default; color: var(--muted); }
.loop-profile-icon:disabled svg { transform: none; opacity: .5; }
.loop-profile-trigger:focus-visible, .loop-profile-icon:focus-visible {
  outline: 2px solid var(--mint); outline-offset: 3px;
}
.loop-cta--assistant:has(.chat-panel:not([hidden])) > .loop-track { visibility: hidden; }
@media (max-width: 900px) {
  :root :is(.loop-cta, .nav) .loop-main-label { font-size: 16px; }
  :root :is(.loop-cta, .nav) .loop-button { padding-inline: 8px; gap: 8px; }
  :root :is(.loop-cta, .nav) .loop-button .loop-glyph { translate: -4px 0; }
}
@media (prefers-reduced-motion: reduce) {
  :is(.loop-cta, .nav) .loop-button *, .loop-cta .loop-profile-badge *, .loop-cta .pipeline-tile {
    transition: none !important; animation: none !important;
  }
  :root :is(.loop-cta, .nav) .loop-button[data-active="true"] .loop-main-label { transform: none; }
}

/* A larger profile on a compact trail, sized to its available column. */
.loop-cta--contact { max-width: 640px; }
:root .loop-cta--contact .loop-brand-source {
  --contact-logo-size: 48px; --contact-ring-size: 54px;
  position: absolute; z-index: 2; width: 80px; height: 80px;
  margin: 0; translate: -50% -50%; pointer-events: none;
}
.loop-cta--contact:not([data-loop-ready="true"]) .loop-brand-source { visibility: hidden; }
.loop-cta--contact .loop-profile-canopy { min-height: 196px; padding-block: 90px 10px; }
.loop-cta--contact .loop-profile-badge { --portrait-size: 76px; }
.loop-cta--contact .loop-profile-badge img { width: var(--portrait-size); height: var(--portrait-size); }
.loop-cta--contact .loop-profile-name { font-size: 18px; }
@container (min-width: 480px) {
  :root .loop-cta--contact .loop-brand-source {
    --contact-logo-size: 60px; --contact-ring-size: 67px; width: 96px; height: 96px;
  }
  .loop-cta--contact .loop-profile-canopy { min-height: 250px; padding-block: 104px 14px; }
  .loop-cta--contact .loop-profile-badge { --portrait-size: 112px; --profile-gap: 18px; padding: 10px 28px 10px 10px; border-radius: 80px; }
  .loop-cta--contact .loop-profile-badge img { border-width: 5px; }
  .loop-cta--contact .loop-profile-copy { min-width: 168px; }
  .loop-cta--contact .loop-profile-name { font-size: 24px; }
  .loop-cta--contact .loop-profile-role { font-size: 14px; }
  .loop-cta--contact .loop-profile-icon { width: 40px; height: 48px; }
  .loop-cta--contact .loop-profile-icon svg { width: 24px; height: 24px; }
}
@media (max-height: 600px) {
  :root .loop-cta--contact .loop-brand-source {
    --contact-logo-size: 36px; --contact-ring-size: 42px; width: 56px; height: 56px;
  }
  .loop-cta--contact .loop-profile-canopy { min-height: 166px; padding-block: 64px 10px; }
  .loop-cta--contact .loop-action { padding-block: 8px; }
}
@media (max-width: 559px) and (max-height: 480px) {
  :root .loop-cta--contact .loop-brand-source {
    --contact-logo-size: 28px; --contact-ring-size: 32px; width: 40px; height: 40px;
  }
  .loop-cta--contact .loop-profile-canopy { min-height: 126px; padding-top: 44px; }
  .loop-cta--contact .loop-profile-badge { --portrait-size: 56px; }
  .loop-cta--contact .loop-action { padding-block: 4px; }
  :root .loop-cta--contact .loop-button { min-height: 44px; height: 44px; padding-block: 2px; }
}

/* Opening launchers and window actions share one mint surface and raised edge. */
:root[data-device] :is(.loop-cta, .nav) .loop-button,
:root .message-window .window-action {
  --button-depth: 1.5px;
  --button-edge: var(--loop-button-edge);
  border: 0; border-radius: 18px;
  color: var(--loop-button-ink); background: var(--mint);
  box-shadow: 0 var(--button-depth) 0 var(--button-edge);
  transition: box-shadow .2s ease;
}
/* The launcher's margin preserves its established 68px layout slot. */
:root[data-device] :is(.loop-cta, .nav) .loop-button {
  width: 330px; max-width: calc(100% - 40px); height: 59.5px; min-height: 59.5px;
  margin-block: 4.25px; padding: 8.75px 23px; gap: 13px;
}
/* Keep the longer Spanish invitation on one line with room for its icon. */
:root:lang(es)[data-device] .loop-cta--assistant .chat-launch { width: 360px; }
:root[data-device] :is(.loop-cta, .nav) .loop-button[data-active="true"],
:root .message-window .window-action:enabled:is(:hover, :focus-visible) {
  box-shadow: 0 var(--button-depth) 0 var(--button-edge), 0 8px 18px color-mix(in srgb, var(--mint) 10%, transparent);
}
/* Window footers keep compact, flexible labels and a comfortable touch target. */
:root .message-window .window-action {
  position: relative; display: inline-flex; align-items: center; justify-content: center;
  box-sizing: border-box; width: fit-content; max-width: 100%; min-width: 0; min-height: 48px;
  padding: 10px 18px; gap: 10px;
  font: var(--type-weight-heading) 17px/var(--type-leading-subheading) var(--font-heading);
  letter-spacing: var(--type-tracking-subheading); text-align: center; text-decoration: none;
  white-space: normal; cursor: pointer;
}
:root .message-window .window-action::after { content: none; }
:root .message-window .window-action .action-chevron { flex: 0 0 20px; width: 20px; height: 20px; color: inherit; }
:root .message-window .window-action:focus-visible { outline: 2px solid var(--mint); outline-offset: 4px; }
:root .message-window .window-action:disabled { opacity: .45; cursor: default; box-shadow: none; }
:root .message-window:has([aria-busy="true"]) .window-action:disabled { cursor: wait; }
@media (prefers-reduced-motion: reduce) {
  :root .message-window .window-action { transition: none; }
}
:root :is(.loop-cta, .nav) .loop-button .loop-main-label { font-size: 20px; }
:root :is(.loop-cta, .nav) .loop-button .loop-text-track { flex: 1; min-width: 0; text-align: center; }
:root :is(.loop-cta, .nav) .loop-button .loop-hint { inset-inline: -2px; color: var(--loop-button-ink); }
:root :is(.loop-cta, .nav) .loop-button .loop-icon-disc { width: 25px; height: 32px; border: 0; border-radius: 0; background: transparent; box-shadow: none; }
:root :is(.loop-cta, .nav) .loop-button .loop-glyph { width: 25px; height: 25px; translate: 0; color: var(--loop-button-ink); }
.loop-cta--assistant .chat-panel { --window-launch-light: var(--mint); --window-launch-shade: var(--mint); }
@container (min-width: 401px) {
  :root:lang(de)[data-device] :is(.loop-cta, .nav) .loop-button { padding-inline: 19px; gap: 10px; }
}
@container (max-width: 400px) {
  :root[data-device] :is(.loop-cta, .nav) .loop-button { max-width: calc(100% - 56px); padding-inline: 13px; gap: 6px; }
  :root:lang(es)[data-device] .loop-cta--assistant .chat-launch { max-width: calc(100% - 32px); }
  :root :is(.loop-cta, .nav) .loop-button .loop-main-label { font-size: 17px; }
}
@container (max-width: 320px) {
  :root[data-device] :is(.loop-cta, .nav) .loop-button { max-width: calc(100% - 48px); padding-inline: 8px; gap: 6px; }
  :root:is(:lang(de), :lang(pt))[data-device] :is(.loop-cta, .nav) .loop-button { max-width: calc(100% - 16px); }
  :root:lang(es)[data-device] .loop-cta--assistant .chat-launch { max-width: calc(100% - 16px); }
  :root :is(.loop-cta, .nav) .loop-button .loop-main-label { font-size: 16px; }
  :root :is(.loop-cta, .nav) .loop-button .loop-icon-disc { width: 22px; }
}
/* Retain the established short-screen footprint and touch target. */
@media (max-width: 1099px) and (max-height: 740px) {
  :root[data-device="compact"] :is(.loop-cta, .nav) .loop-button { height: 48px; min-height: 48px; margin-block: 0; padding-block: 4px; }
}

/* Keep the opening action's details at the Home control's scale and opacity. */
:root[data-device] .nav .bottleneck-button {
  position: fixed; margin: 0; width: max-content; height: 44px; min-height: 44px;
  padding: 4px 14px; gap: 8px; border-radius: 12px;
  background: color-mix(in srgb, var(--mint) 80%, transparent); box-shadow: none;
  max-width: calc(100vw - 2 * max(var(--header-gutter, 5vw), env(safe-area-inset-left), env(safe-area-inset-right)) - var(--bottleneck-home-clearance, 120px));
}
:root[data-device] .nav .bottleneck-button[data-active="true"] {
  background: var(--mint); box-shadow: none; filter: brightness(1.06);
}
:root .nav .bottleneck-button .loop-main-label { font-size: 14px; white-space: normal; text-wrap: balance; }
:root .nav .bottleneck-button .loop-hint { font-size: 11px; line-height: 14px; }
:root .nav .bottleneck-button :is(.loop-icon-disc, .loop-glyph) { width: 20px; height: 20px; }
:root:lang(de) .nav .bottleneck-button { --bottleneck-home-clearance: 136px; }
@media (max-width: 360px) {
  :root[data-device] .nav .bottleneck-button { padding-inline: 8px; gap: 6px; }
}

/* Cloud softness, with one material palette for the pipe, docks and objects. */
.loop-cta {
  --cloud-light: var(--swatch-teal-853);
  --cloud-shade: var(--swatch-teal-914);
  --cloud-edge: var(--swatch-sage-704);
  --trail-shadow: color-mix(in srgb, var(--cloud-shade) 45%, transparent);
  --flow-lit: color-mix(in srgb, var(--surface-active) 85%, var(--cloud-light));
  --flow-face: color-mix(in srgb, var(--surface-hover) 88%, var(--cloud-light));
  --flow-shade: color-mix(in srgb, var(--surface) 88%, var(--cloud-shade));
  --flow-edge: color-mix(in srgb, var(--line) 87%, var(--muted));
  --flow-accent: color-mix(in srgb, var(--mint) 85%, var(--flow-face));
  --flow-shadow-opacity: .3;
  --flow-contact-opacity: .25;
}
:root[data-theme="light"] .loop-cta {
  --cloud-light: var(--swatch-fixed-white);
  --cloud-shade: color-mix(in srgb, var(--swatch-fixed-white) 88%, var(--surface-active));
  --cloud-edge: color-mix(in srgb, var(--line) 75%, var(--swatch-fixed-white));
  --trail-shadow: color-mix(in srgb, var(--line) 45%, transparent);
  --flow-lit: color-mix(in srgb, var(--cloud-light) 88%, var(--surface));
  --flow-face: color-mix(in srgb, var(--cloud-light) 45%, var(--surface));
  --flow-shade: color-mix(in srgb, var(--surface) 70%, var(--line));
  --flow-edge: color-mix(in srgb, var(--line) 85%, var(--muted));
  --flow-shadow-opacity: .1;
  --flow-contact-opacity: .14;
}
.loop-cta .cloud-shadow { fill: var(--trail-shadow); stroke: none; filter: blur(4px); transform: translateY(4px); opacity: .65; }
.loop-cta .cloud-envelope { stroke: var(--flow-edge); stroke-width: 1.25; stroke-linecap: round; stroke-linejoin: round; }
.loop-cta .loop-track .track-ribbon > :not(.track-pulse) { stroke: none; filter: none; }
.loop-cta .loop-track .track-ribbon .track-highlight { stroke: var(--flow-lit); stroke-width: 2; transform: translateY(-2.5px); opacity: .8; }
.loop-cta .loop-track .track-pulse { stroke: var(--mint); stroke-width: 4; stroke-linecap: round; }
.loop-cta .origin-rim { fill: var(--flow-face); stroke: var(--flow-edge); stroke-width: 1.2; }
.loop-cta .origin-core { fill: var(--flow-accent); }
.loop-cta .loop-profile-badge { background: linear-gradient(var(--flow-lit), var(--flow-face)); box-shadow: 0 0 0 1px var(--flow-edge), 0 4px 14px var(--trail-shadow); }
.loop-cta .loop-profile-badge img { border-color: var(--flow-face); box-shadow: 0 0 0 1px var(--flow-edge); }

/* Preserve the original SVG forms and opaque recessed floors. All three
   components use the pipe's highlights, edges and side shading. */
:root[data-theme] .loop-cta .hero-services {
  --tile-ink: var(--flow-edge);
  --tile-stroke-width: .85;
  --tile-top-highlight: var(--flow-lit);
  --tile-top-shade: var(--flow-face);
  --tile-side-highlight: var(--flow-face);
  --tile-side-shade: var(--flow-shade);
  --tile-dock-highlight: var(--flow-lit);
  --tile-dock-shade: var(--flow-face);
  --tile-dock-side: var(--flow-shade);
  --tile-floor-back: color-mix(in srgb, var(--flow-shade) 85%, var(--flow-edge));
  --tile-floor-front: var(--flow-face);
  --tile-accent-top: var(--tile-top-paint);
  --tile-accent-side: var(--flow-accent);
  --tile-side: var(--flow-shade);
  --tile-card: var(--flow-lit);
  --tile-lens: var(--flow-lit);
  --tile-face: var(--flow-shade);
  --tile-detail: var(--flow-accent);
  --tile-terminal: var(--flow-accent);
  --tile-shadow-opacity: var(--flow-shadow-opacity);
  --tile-contact-opacity: var(--flow-contact-opacity);
}
@container (max-width: 620px) {
  .loop-track .track-ribbon .track-highlight { stroke-width: 1.2; transform: translateY(-1.5px); }
  .loop-track .track-pulse { stroke-width: 3; }
  .loop-cta .cloud-envelope { stroke-width: 1; }
  .loop-cta .cloud-shadow { filter: blur(4px); transform: translateY(3px); }
}

/* F: direct twin current, soft ground light and rings on passage. */
.loop-cta[data-pipeline="twin"] {
  --twin-ink: color-mix(in srgb, var(--mint) 58%, var(--muted));
  --twin-particle-ink: color-mix(in srgb, var(--mint) 24%, var(--text));
  --twin-hover-fragment: 14;
}
:root[data-theme="light"] .loop-cta[data-pipeline="twin"] {
  --twin-particle-ink: color-mix(in srgb, var(--mint) 45%, var(--text));
}
.loop-cta[data-pipeline="twin"] .pipeline-foundation,
.loop-cta[data-pipeline="twin"] .track-ribbon > :not(.track-edge, .track-pulse, .track-companion) { display: none; }
.loop-cta[data-pipeline="twin"] .pipeline-contact { opacity: .12; }
/* Opening icons get their depth from layered faces and one shared light source. */
.loop-cta--assistant[data-pipeline="twin"] { --tile-shadow: var(--swatch-fixed-black); }
:root[data-theme="light"] .loop-cta--assistant[data-pipeline="twin"] { --tile-shadow: var(--swatch-sage-720); }
.loop-cta--assistant .pipeline-tile {
  --icon-surface: url(#pipeline-icon-surface);
  --icon-side: url(#pipeline-icon-side);
}
.loop-cta--assistant [href="#service-gtm"] .pipeline-tile {
  --icon-surface: url(#pipeline-icon-crm-surface);
  --icon-side: url(#pipeline-icon-crm-side);
}
.loop-cta--assistant [href="#service-ai"] .pipeline-tile {
  --icon-surface: url(#pipeline-icon-ai-surface);
  --icon-side: url(#pipeline-icon-ai-side);
}
.loop-cta--assistant :is(.pipeline-top, .pipeline-accent-top) { fill: var(--icon-surface); }
.loop-cta--assistant .pipeline-side { fill: var(--icon-side); }
.loop-cta--assistant[data-pipeline="twin"] .pipeline-contact {
  cx: 72px; cy: 86px; rx: 31px; ry: 4px;
  transform: none; opacity: .035; filter: blur(1px);
}
/* A faint contact edge replaces the broad floating shadow and ground glow. */
.loop-cta--assistant[data-pipeline="twin"] :is(.twin-shadow, .twin-ground-glow) { display: none; }
.loop-cta--assistant[data-pipeline="twin"] .twin-shadow-pulse { fill-opacity: .12; }
.loop-cta[data-pipeline="twin"] .loop-track .track-ribbon .track-edge {
  fill: none; stroke: var(--twin-ink); stroke-width: 1.3;
}
.loop-cta[data-pipeline="twin"] .loop-track .track-ribbon .track-companion {
  fill: none; stroke: var(--mint); stroke-width: 1; stroke-opacity: .3; stroke-linecap: round; stroke-linejoin: round;
}
.loop-cta[data-pipeline="twin"] .loop-track .track-pulse {
  stroke: var(--twin-particle-ink); stroke-width: 2.6;
  stroke-dasharray: var(--twin-hover-fragment) 1000;
  filter: drop-shadow(0 0 1.5px color-mix(in srgb, var(--mint) 45%, transparent));
}
.loop-cta[data-pipeline="twin"][data-signal="running"] .loop-track .track-pulse {
  stroke-width: 3.2;
  filter: drop-shadow(0 0 2.5px color-mix(in srgb, var(--mint) 65%, transparent));
}
.twin-floor .ground-ring, .twin-floor .ground-ripple {
  fill: none; vector-effect: non-scaling-stroke; stroke-width: 1.2;
}
.twin-floor .ground-ring {
  stroke: var(--twin-arrival-ring, var(--twin-ring-paint)); stroke-width: 1.3;
  stroke-opacity: var(--twin-arrival-ring-opacity, 1);
}
.twin-ring-echo { fill: none; stroke: var(--mint); stroke-width: 1; stroke-opacity: .3; }
.twin-floor .ground-ripple { stroke: var(--mint); opacity: 0; transform-box: fill-box; transform-origin: center; }
.twin-shadow { fill: var(--twin-shadow-paint); filter: blur(1px); }
.twin-ground-glow { fill: var(--twin-ground-paint); }
.twin-station { opacity: 0; transition: opacity .12s ease-out; }
.twin-shadow-pulse { fill: var(--twin-arrival-paint); opacity: 0; transition: opacity .3s ease; }
.loop-cta[data-station="0"] .twin-floor[data-tile="0"] .twin-station,
.loop-cta[data-station="1"] .twin-floor[data-tile="1"] .twin-station,
.loop-cta[data-station="2"] .twin-floor[data-tile="2"] .twin-station { opacity: 1; }
.twin-shade .shade-copy { fill: #000; stroke: #000; stroke-width: 1; filter: blur(3px); opacity: .55; }
:root[data-theme="light"] .twin-ground-glow { opacity: .65; }
:root[data-theme="light"] .twin-shadow { opacity: .6; }
:root[data-theme="light"] .twin-shade .shade-copy { fill: var(--swatch-sage-720); stroke: var(--swatch-sage-720); opacity: .3; }
.loop-cta[data-pipeline="twin"] .loop-service[data-arrived="true"] :is(.pipeline-accent-side, .pipeline-data-port, .pipeline-eye) {
  filter: drop-shadow(0 0 3px var(--mint));
}
.loop-cta--assistant[data-pipeline="twin"] .loop-service[data-arrived="true"] :is(.pipeline-accent-side, .pipeline-data-port, .pipeline-eye) {
  filter: none;
}
.loop-cta:has(.loop-service:nth-of-type(1)[data-arrived="true"]) .twin-floor[data-tile="0"],
.loop-cta:has(.loop-service:nth-of-type(2)[data-arrived="true"]) .twin-floor[data-tile="1"],
.loop-cta:has(.loop-service:nth-of-type(3)[data-arrived="true"]) .twin-floor[data-tile="2"],
.loop-cta:has(.loop-profile-badge[data-arrived="true"]) .twin-floor[data-tile="0"] {
  --twin-arrival-opacity: 1;
  --twin-arrival-ring: var(--mint);
  --twin-arrival-ring-opacity: .7;
  --twin-arrival-ripple: twin-ground-ripple 1.1s cubic-bezier(.2,.6,.3,1) both;
}
/* The profile sits in the current like an opening component, with its ground
   light supplying depth rather than a heavy raised capsule. */
.loop-cta[data-pipeline="twin"] .loop-profile-badge {
  background: var(--bg);
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--twin-ink) 32%, var(--line));
  transition: box-shadow .2s ease;
}
.loop-cta[data-pipeline="twin"] .loop-profile-badge[data-arrived="true"] {
  box-shadow: 0 0 0 1px color-mix(in srgb, var(--mint) 55%, var(--line));
}
.loop-cta[data-pipeline="twin"] .loop-profile-badge img {
  border-color: var(--bg); box-shadow: 0 0 0 1px color-mix(in srgb, var(--twin-ink) 45%, var(--line));
}
:root[data-device] .contact .loop-cta[data-pipeline="twin"] .loop-brand-source span {
  background: transparent; border-color: color-mix(in srgb, var(--mint) 24%, transparent);
}
:root[data-device] .contact .loop-cta[data-pipeline="twin"] .loop-brand-source span + span {
  border-color: color-mix(in srgb, var(--mint) 12%, transparent);
}
.twin-floor .twin-shadow-pulse { opacity: var(--twin-arrival-opacity, 0); }
.twin-floor .ground-ripple { animation: var(--twin-arrival-ripple, none); }
@keyframes twin-ground-ripple {
  from { opacity: .7; transform: scale(1); }
  to { opacity: 0; transform: scale(1.16); }
}
@keyframes twin-current-drift {
  from { stroke-dashoffset: 0; opacity: 1; }
  to { stroke-dashoffset: -1000; opacity: 1; }
}
@media (prefers-reduced-motion: no-preference) {
  .loop-cta[data-pipeline="twin"][data-loop-ready="true"]:not([data-signal="running"], [data-signal="arrived"]) .track-pulse {
    stroke-dasharray: 8 325.333333;
    animation: twin-current-drift 14s linear infinite;
    animation-play-state: var(--twin-idle-play-state, paused);
  }
  .loop-cta[data-pipeline="twin"][data-idle-visible="true"] { --twin-idle-play-state: running; }
}
@media (prefers-reduced-motion: reduce) {
  .twin-shadow-pulse, .twin-station { transition: none; }
  .twin-floor .ground-ripple { animation: none; }
}