.aca-shell {
  position: fixed;
  right: max(18px, env(safe-area-inset-right));
  bottom: max(18px, env(safe-area-inset-bottom));
  z-index: 10000;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", "Noto Sans JP", sans-serif;
  color: var(--text-primary, #f5f1e8);
}
.aca-shell * { box-sizing: border-box; }
.aca-launcher {
  position: relative;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--platform-accent, var(--accent, #d3a15f)) 62%, transparent);
  background: radial-gradient(
    circle at 38% 32%,
    color-mix(in srgb, var(--platform-accent, #d3a15f) 34%, var(--text-primary) 66%),
    color-mix(in srgb, var(--platform-accent, #d3a15f) 20%, var(--bg-primary) 80%) 32%,
    color-mix(in srgb, var(--bg-primary, #08090b) 96%, transparent) 72%
  );
  box-shadow:
    0 18px 55px var(--shadow, rgba(0, 0, 0, .52)),
    0 0 34px color-mix(in srgb, var(--platform-accent, #d3a15f) 18%, transparent),
    inset 0 0 22px color-mix(in srgb, var(--platform-accent, #d3a15f) 10%, transparent);
  color: color-mix(in srgb, var(--platform-accent, #d3a15f) 75%, var(--text-primary) 25%);
  cursor: grab;
  touch-action: none;
  display: grid;
  place-items: center;
  padding: 0;
}
.aca-launcher:active { cursor: grabbing; }
.aca-mark {
  font-size: 25px;
  text-shadow: 0 0 18px color-mix(in srgb, var(--platform-accent, #d3a15f) 78%, transparent);
}
.aca-orbit {
  position: absolute;
  inset: 7px;
  border: 1px solid color-mix(in srgb, var(--platform-accent, #d3a15f) 46%, transparent);
  border-radius: 50%;
  animation: aca-spin 8s linear infinite;
}
.aca-orbit:after {
  content: "";
  position: absolute;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--platform-accent, #d3a15f) 75%, var(--text-primary) 25%);
  top: 1px;
  left: 50%;
  box-shadow: 0 0 12px color-mix(in srgb, var(--platform-accent, #d3a15f) 95%, transparent);
}
.aca-launcher-label {
  position: absolute;
  right: 54px;
  white-space: nowrap;
  padding: 7px 10px;
  border: 1px solid color-mix(in srgb, var(--platform-accent, #d3a15f) 22%, transparent);
  background: color-mix(in srgb, var(--bg-primary, #060709) 82%, transparent);
  backdrop-filter: blur(12px);
  font-size: 9px;
  letter-spacing: .12em;
  color: color-mix(in srgb, var(--text-primary) 76%, transparent);
  opacity: 0;
  transform: translateX(6px);
  pointer-events: none;
  transition: .2s;
}
.aca-launcher:hover .aca-launcher-label { opacity: 1; transform: none; }
.aca-panel {
  position: absolute;
  right: 0;
  bottom: 0;
  width: min(390px, calc(100vw - 28px));
  height: min(620px, calc(100svh - 28px));
  display: grid;
  grid-template-rows: auto auto 1fr auto auto;
  border: 1px solid color-mix(in srgb, var(--platform-accent, #d3a15f) 38%, transparent);
  background: linear-gradient(
    150deg,
    color-mix(in srgb, var(--bg-secondary, #18120d) 98%, transparent),
    color-mix(in srgb, var(--bg-primary, #050608) 98%, transparent) 58%
  );
  box-shadow:
    0 36px 100px var(--shadow, rgba(0, 0, 0, .72)),
    0 0 42px color-mix(in srgb, var(--platform-accent, #d3a15f) 8%, transparent);
  backdrop-filter: blur(24px);
  clip-path: polygon(0 18px, 18px 0, 100% 0, 100% calc(100% - 18px), calc(100% - 18px) 100%, 0 100%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px) scale(.96);
  transform-origin: 100% 100%;
  transition: .25s cubic-bezier(.2, .8, .2, 1);
  overflow: hidden;
}
.aca-open .aca-panel { opacity: 1; visibility: visible; transform: none; }
.aca-open .aca-launcher { opacity: 0; visibility: hidden; pointer-events: none; }
.aca-header {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 16px 13px 19px;
  border-bottom: 1px solid color-mix(in srgb, var(--border-color) 11%, transparent);
  background: linear-gradient(90deg, color-mix(in srgb, var(--platform-accent, #d3a15f) 10%, transparent), transparent);
}
.aca-header div { display: grid; gap: 4px; }
.aca-header small {
  font-size: 8px;
  letter-spacing: .2em;
  color: var(--platform-accent, #d3a15f);
}
.aca-header strong { font-size: 15px; letter-spacing: .04em; }
.aca-minimize {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--border-color) 16%, transparent);
  background: color-mix(in srgb, var(--bg-primary) 26%, transparent);
  color: var(--text-primary, #f5f1e8);
  font-size: 22px;
  cursor: pointer;
}
.aca-status {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 17px;
  border-bottom: 1px solid color-mix(in srgb, var(--border-color) 8%, transparent);
  font-size: 9px;
  line-height: 1.5;
  color: var(--text-tertiary, #aaa49a);
}
.aca-status i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--platform-accent, #d3a15f);
  box-shadow: 0 0 14px color-mix(in srgb, var(--platform-accent, #d3a15f) 80%, transparent);
  flex: none;
}
.aca-log {
  overflow: auto;
  padding: 17px;
  display: flex;
  flex-direction: column;
  gap: 11px;
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--platform-accent, #d3a15f) 34%, transparent) transparent;
}
.aca-message {
  max-width: 88%;
  padding: 11px 13px;
  font-size: 12.5px;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
  border: 1px solid color-mix(in srgb, var(--border-color) 12%, transparent);
}
.aca-bot {
  align-self: flex-start;
  background: color-mix(in srgb, var(--text-primary) 5.5%, transparent);
  clip-path: polygon(0 8px, 8px 0, 100% 0, 100% 100%, 0 100%);
}
.aca-user {
  align-self: flex-end;
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--platform-accent, #d3a15f) 38%, var(--bg-primary) 62%),
    color-mix(in srgb, var(--platform-accent, #d3a15f) 11%, transparent)
  );
  border-color: color-mix(in srgb, var(--platform-accent, #d3a15f) 32%, transparent);
  clip-path: polygon(0 0, calc(100% - 8px) 0, 100% 8px, 100% 100%, 0 100%);
}
.aca-pending { color: var(--text-tertiary, #aaa49a); }
.aca-pending:after {
  content: "";
  display: inline-block;
  width: 1.5em;
  animation: aca-dots 1.2s steps(4, end) infinite;
  overflow: hidden;
  vertical-align: bottom;
}
.aca-form {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 9px;
  padding: 12px 13px;
  border-top: 1px solid color-mix(in srgb, var(--border-color) 10%, transparent);
  background: color-mix(in srgb, var(--bg-primary, #030406) 72%, transparent);
}
.aca-input {
  width: 100%;
  min-height: 44px;
  max-height: 124px;
  resize: none;
  border: 1px solid color-mix(in srgb, var(--border-color) 14%, transparent);
  background: color-mix(in srgb, var(--bg-primary) 30%, transparent);
  color: var(--text-primary, #f5f1e8);
  padding: 11px 12px;
  outline: none;
  line-height: 1.55;
  border-radius: 0;
}
.aca-input:focus {
  border-color: color-mix(in srgb, var(--platform-accent, #d3a15f) 60%, transparent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--platform-accent, #d3a15f) 8%, transparent);
}
.aca-send {
  min-width: 64px;
  border: 1px solid color-mix(in srgb, var(--platform-accent, #d3a15f) 48%, transparent);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--platform-accent, #d3a15f) 42%, var(--bg-primary) 58%),
    color-mix(in srgb, var(--platform-accent, #d3a15f) 14%, transparent)
  );
  color: color-mix(in srgb, var(--platform-accent, #d3a15f) 75%, var(--text-primary) 25%);
  cursor: pointer;
}
.aca-send:disabled { opacity: .45; cursor: wait; }
.aca-note {
  margin: 0;
  padding: 0 15px 12px;
  font-size: 8px;
  line-height: 1.55;
  color: color-mix(in srgb, var(--text-tertiary) 72%, transparent);
  background: color-mix(in srgb, var(--bg-primary, #030406) 72%, transparent);
}
@keyframes aca-spin { to { transform: rotate(360deg); } }
@keyframes aca-dots {
  0% { content: ""; }
  25% { content: "."; }
  50% { content: ".."; }
  75%, 100% { content: "..."; }
}
@media (max-width: 600px) {
  .aca-shell { right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); }
  .aca-panel {
    position: fixed;
    inset: auto 8px max(8px, env(safe-area-inset-bottom));
    width: auto;
    height: min(690px, calc(100svh - 16px));
    clip-path: none;
    border-radius: 18px;
  }
  .aca-launcher-label { display: none; }
  .aca-message { max-width: 92%; }
}
@media (prefers-reduced-motion: reduce) {
  .aca-shell * { animation: none !important; transition: none !important; }
}