:root {
  --experts-ai-ink: #102b55;
  --experts-ai-muted: #61738c;
  --experts-ai-line: #dbe7f2;
  --experts-ai-surface: #ffffff;
  --experts-ai-soft: #f4f9fd;
  --experts-ai-brand: #0b2e63;
  --experts-ai-accent: #0b84df;
  --experts-ai-accent-dark: #076ab6;
  --experts-ai-accent-soft: #eaf5fd;
  --experts-ai-danger: #b42318;
}

.experts-ai-learning-concierge-widget,
.experts-ai-learning-concierge-widget * {
  box-sizing: border-box;
}

.experts-ai-learning-concierge-widget [hidden] {
  display: none !important;
}

.experts-ai-learning-concierge-widget {
  position: fixed;
  right: 22px;
  bottom: 22px;
  z-index: 999999;
  width: min(416px, calc(100vw - 32px));
  color: var(--experts-ai-ink);
  font-family: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  line-height: 1.55;
}

.experts-ai-learning-concierge {
  display: flex;
  width: 100%;
  height: min(690px, calc(100vh - 44px));
  min-height: 460px;
  overflow: hidden;
  flex-direction: column;
  border: 1px solid #d4e2ef;
  border-radius: 18px;
  background: var(--experts-ai-surface);
  box-shadow: 0 24px 65px rgba(11, 46, 99, 0.2), 0 5px 18px rgba(11, 46, 99, 0.08);
}

.experts-ai-learning-concierge__header {
  position: relative;
  display: flex;
  min-height: 84px;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 17px 14px;
  color: var(--experts-ai-brand);
  background: #ffffff;
}

.experts-ai-learning-concierge__header::before {
  position: absolute;
  top: 0;
  right: 0;
  left: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--experts-ai-brand) 0 34%, var(--experts-ai-accent) 34% 100%);
  content: "";
}

.experts-ai-learning-concierge__header::after {
  position: absolute;
  right: 17px;
  bottom: 0;
  left: 17px;
  height: 1px;
  background: var(--experts-ai-line);
  content: "";
}

.experts-ai-learning-concierge__brand {
  display: grid;
  min-width: 0;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  gap: 11px;
}

.experts-ai-learning-concierge__brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border: 1px solid #cfe2f2;
  border-radius: 50%;
  color: var(--experts-ai-brand);
  background: #f8fcff;
  box-shadow: inset 0 0 0 4px #ffffff;
}

.experts-ai-learning-concierge__brand-mark svg {
  display: block;
  width: 34px;
  height: 34px;
}

.experts-ai-learning-concierge__brand-mark line {
  stroke: #92c5e9;
  stroke-width: 1.5;
}

.experts-ai-learning-concierge__brand-mark circle {
  fill: currentColor;
}

.experts-ai-learning-concierge__brand-mark .is-accent {
  fill: var(--experts-ai-accent);
}

.experts-ai-learning-concierge__eyebrow {
  display: block;
  margin: 0 0 1px;
  color: var(--experts-ai-accent);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.3;
  text-transform: uppercase;
}

.experts-ai-learning-concierge__title {
  display: block;
  margin: 0;
  color: var(--experts-ai-brand);
  font-size: 16px;
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 1.35;
}

.experts-ai-learning-concierge__minimize {
  display: inline-grid;
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid #c9dff0;
  border-radius: 50%;
  color: var(--experts-ai-brand);
  background: #f5faff;
  cursor: pointer;
  font-size: 21px;
  line-height: 1;
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease, transform 150ms ease;
}

.experts-ai-learning-concierge__minimize:hover,
.experts-ai-learning-concierge__minimize:focus-visible {
  border-color: var(--experts-ai-accent);
  color: var(--experts-ai-accent-dark);
  background: var(--experts-ai-accent-soft);
  transform: translateY(-1px);
}

.experts-ai-learning-concierge__notice {
  margin: 0;
  padding: 9px 16px;
  border-bottom: 1px solid #d6e8f5;
  color: #315979;
  background: #eef7fd;
  font-size: 11px;
  text-align: center;
}

.experts-ai-learning-concierge__messages {
  display: flex;
  min-height: 0;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 14px;
  overflow-x: hidden;
  overflow-y: auto;
  padding: 19px 16px 23px;
  background:
    radial-gradient(circle at 100% 0, rgba(11, 132, 223, 0.08), transparent 35%),
    linear-gradient(180deg, #fbfdff 0%, var(--experts-ai-soft) 100%);
  overscroll-behavior: contain;
  scrollbar-color: #b7d5ea transparent;
  scrollbar-width: thin;
}

.experts-ai-learning-concierge__message {
  display: flex;
  max-width: 92%;
  flex-direction: column;
  gap: 10px;
  animation: experts-ai-message-in 180ms ease-out both;
}

.experts-ai-learning-concierge__message.is-assistant {
  align-self: flex-start;
  align-items: flex-start;
}

.experts-ai-learning-concierge__message.is-user {
  align-self: flex-end;
  align-items: flex-end;
}

.experts-ai-learning-concierge__bubble {
  padding: 11px 13px;
  border: 1px solid #d7e5f1;
  border-left: 3px solid var(--experts-ai-accent);
  border-radius: 4px 15px 15px 15px;
  color: var(--experts-ai-ink);
  background: #ffffff;
  box-shadow: 0 4px 13px rgba(11, 46, 99, 0.055);
  font-size: 14px;
  white-space: pre-line;
}

.experts-ai-learning-concierge__message.is-user .experts-ai-learning-concierge__bubble {
  border-color: var(--experts-ai-brand);
  border-left-color: var(--experts-ai-brand);
  border-radius: 15px 4px 15px 15px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--experts-ai-brand), #124f94);
  box-shadow: 0 5px 14px rgba(11, 46, 99, 0.14);
}

.experts-ai-learning-concierge__choices {
  display: grid;
  width: 100%;
  gap: 7px;
}

.experts-ai-learning-concierge__choices button {
  position: relative;
  width: 100%;
  min-height: 42px;
  padding: 9px 35px 9px 12px;
  border: 1px solid #bfd8eb;
  border-radius: 9px;
  color: var(--experts-ai-brand);
  background: rgba(255, 255, 255, 0.96);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
  text-align: left;
  transition: border-color 150ms ease, color 150ms ease, background 150ms ease, transform 150ms ease;
}

.experts-ai-learning-concierge__choices button::after {
  position: absolute;
  top: 50%;
  right: 13px;
  color: var(--experts-ai-accent);
  content: "›";
  font-size: 20px;
  font-weight: 400;
  line-height: 1;
  transform: translateY(-52%);
}

.experts-ai-learning-concierge__choices button:hover:not(:disabled),
.experts-ai-learning-concierge__choices button:focus-visible:not(:disabled) {
  border-color: var(--experts-ai-accent);
  color: var(--experts-ai-accent-dark);
  background: var(--experts-ai-accent-soft);
  transform: translateY(-1px);
}

.experts-ai-learning-concierge__choices button:disabled {
  cursor: default;
  opacity: 0.5;
}

.experts-ai-learning-concierge__choices button:disabled::after {
  opacity: 0;
}

.experts-ai-learning-concierge__services {
  display: grid;
  width: 100%;
  gap: 9px;
}

.experts-ai-learning-concierge__service-card {
  position: relative;
  overflow: hidden;
  padding: 14px 14px 14px 16px;
  border: 1px solid #d5e4ef;
  border-left: 4px solid var(--experts-ai-accent);
  border-radius: 10px;
  background: #ffffff;
  box-shadow: 0 5px 15px rgba(11, 46, 99, 0.055);
}

.experts-ai-learning-concierge__service-card h3 {
  margin: 0 0 5px;
  color: var(--experts-ai-brand);
  font-size: 14px;
}

.experts-ai-learning-concierge__service-card p {
  margin: 0 0 9px;
  color: var(--experts-ai-muted);
  font-size: 12px;
}

.experts-ai-learning-concierge__service-card a {
  color: var(--experts-ai-accent-dark);
  font-size: 12px;
  font-weight: 800;
  text-decoration: underline;
  text-decoration-color: #8fc8ed;
  text-underline-offset: 3px;
}

.experts-ai-learning-concierge__cta {
  display: inline-flex;
  width: 100%;
  min-height: 46px;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 9px;
  color: #ffffff !important;
  background: linear-gradient(135deg, var(--experts-ai-accent), #0870c2);
  box-shadow: 0 8px 20px rgba(11, 132, 223, 0.23);
  font-size: 13px;
  font-weight: 800;
  text-decoration: none !important;
  transition: filter 150ms ease, transform 150ms ease;
}

.experts-ai-learning-concierge__cta:hover,
.experts-ai-learning-concierge__cta:focus-visible {
  filter: brightness(0.96);
  transform: translateY(-1px);
}

.experts-ai-learning-concierge__composer {
  flex: 0 0 auto;
  padding: 13px 14px 10px;
  border-top: 1px solid var(--experts-ai-line);
  background: #ffffff;
}

.experts-ai-learning-concierge__input-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.experts-ai-learning-concierge__input {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  max-height: 116px;
  resize: vertical;
  padding: 11px 12px;
  border: 1px solid #bfd3e4;
  border-radius: 9px;
  color: var(--experts-ai-ink);
  background: #ffffff;
  font: inherit;
  font-size: 14px;
}

.experts-ai-learning-concierge__input::placeholder {
  color: #7a8ba0;
}

.experts-ai-learning-concierge__voice {
  display: inline-grid;
  width: 48px;
  min-width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid #bfd3e4;
  border-radius: 9px;
  color: var(--experts-ai-brand);
  background: #f7fbfe;
  cursor: pointer;
}

.experts-ai-learning-concierge__voice svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.experts-ai-learning-concierge__voice:hover:not(:disabled),
.experts-ai-learning-concierge__voice:focus-visible:not(:disabled) {
  border-color: var(--experts-ai-accent);
  color: var(--experts-ai-accent-dark);
  background: var(--experts-ai-accent-soft);
}

.experts-ai-learning-concierge__voice.is-listening {
  border-color: #d92d20;
  color: #ffffff;
  background: #d92d20;
  box-shadow: 0 0 0 4px rgba(217, 45, 32, 0.14);
}

.experts-ai-learning-concierge__voice:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

.experts-ai-learning-concierge__input:focus {
  border-color: var(--experts-ai-accent);
  outline: 3px solid rgba(11, 132, 223, 0.15);
}

.experts-ai-learning-concierge__send {
  min-width: 64px;
  min-height: 48px;
  padding: 0 13px;
  border: 0;
  border-radius: 9px;
  color: #ffffff;
  background: var(--experts-ai-accent);
  box-shadow: 0 5px 14px rgba(11, 132, 223, 0.2);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
}

.experts-ai-learning-concierge__send:hover:not(:disabled),
.experts-ai-learning-concierge__send:focus-visible:not(:disabled) {
  background: var(--experts-ai-accent-dark);
}

.experts-ai-learning-concierge__send:disabled {
  cursor: wait;
  opacity: 0.55;
}

.experts-ai-learning-concierge__helper {
  margin: 7px 0 0;
  color: var(--experts-ai-muted);
  font-size: 10px;
  line-height: 1.45;
}

.experts-ai-learning-concierge__feedback {
  display: grid;
  gap: 7px;
  margin-top: 10px;
  padding: 10px;
  border: 1px solid #cfe3f2;
  border-radius: 10px;
  background: #f6fbff;
}

.experts-ai-learning-concierge__feedback p {
  margin: 0;
  color: #294d6d;
  font-size: 11px;
  font-weight: 600;
}

.experts-ai-learning-concierge__feedback > div {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.experts-ai-learning-concierge__feedback button {
  padding: 6px 9px;
  border: 1px solid #8ebbdc;
  border-radius: 999px;
  color: #0b4f83;
  background: #ffffff;
  cursor: pointer;
  font: inherit;
  font-size: 10px;
}

.experts-ai-learning-concierge__feedback button:hover:not(:disabled),
.experts-ai-learning-concierge__feedback button:focus-visible:not(:disabled) {
  border-color: var(--experts-ai-accent);
  color: #ffffff;
  background: var(--experts-ai-accent);
}

.experts-ai-learning-concierge__feedback button:disabled {
  cursor: wait;
  opacity: 0.6;
}

.experts-ai-learning-concierge__feedback .experts-ai-learning-concierge__feedback-status {
  color: #526f86;
  font-weight: 400;
}

.experts-ai-learning-concierge__voice-status {
  min-height: 1.45em;
  margin: 6px 0 0;
  color: #476984;
  font-size: 10px;
  line-height: 1.45;
}

.experts-ai-learning-concierge__footer {
  display: flex;
  min-height: 44px;
  flex: 0 0 auto;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 14px;
  border-top: 1px solid var(--experts-ai-line);
  background: #ffffff;
}

.experts-ai-learning-concierge__footer button {
  padding: 4px 0;
  border: 0;
  color: #4d6781;
  background: transparent;
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  font-weight: 600;
  text-decoration: underline;
  text-decoration-color: #a5c8df;
  text-underline-offset: 3px;
}

.experts-ai-learning-concierge__footer button:hover:not(:disabled),
.experts-ai-learning-concierge__footer button:focus-visible:not(:disabled) {
  color: var(--experts-ai-accent-dark);
}

.experts-ai-learning-concierge__footer button:disabled {
  cursor: default;
  opacity: 0.35;
}

.experts-ai-learning-concierge__launcher {
  position: relative;
  display: grid;
  width: 66px;
  height: 66px;
  margin-left: auto;
  place-items: center;
  border: 3px solid #ffffff;
  border-radius: 50%;
  color: #ffffff;
  background: linear-gradient(145deg, var(--experts-ai-accent), #086dbb);
  box-shadow: 0 14px 32px rgba(11, 46, 99, 0.26), 0 0 0 1px rgba(11, 132, 223, 0.18);
  cursor: pointer;
  font-size: 0;
  transition: filter 150ms ease, transform 150ms ease;
}

.experts-ai-learning-concierge__launcher::before {
  display: block;
  width: 28px;
  height: 21px;
  border: 2px solid #ffffff;
  border-radius: 8px;
  content: "";
}

.experts-ai-learning-concierge__launcher::after {
  position: absolute;
  right: 18px;
  bottom: 17px;
  width: 8px;
  height: 8px;
  border-right: 2px solid #ffffff;
  border-bottom: 2px solid #ffffff;
  content: "";
  transform: rotate(32deg);
}

.experts-ai-learning-concierge__launcher:hover,
.experts-ai-learning-concierge__launcher:focus-visible {
  filter: brightness(0.96);
  transform: translateY(-2px);
}

.experts-ai-learning-concierge button:focus-visible,
.experts-ai-learning-concierge a:focus-visible,
.experts-ai-learning-concierge__launcher:focus-visible {
  outline: 3px solid rgba(11, 132, 223, 0.4);
  outline-offset: 2px;
}

@keyframes experts-ai-message-in {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (prefers-reduced-motion: reduce) {
  .experts-ai-learning-concierge__message {
    animation: none;
  }

  .experts-ai-learning-concierge__minimize,
  .experts-ai-learning-concierge__choices button,
  .experts-ai-learning-concierge__cta,
  .experts-ai-learning-concierge__launcher {
    transition: none;
  }
}

@media (max-width: 640px) {
  .experts-ai-learning-concierge-widget[data-mobile-initially-collapsed="1"]:not(.is-initialized) {
    visibility: hidden;
  }

  .experts-ai-learning-concierge-widget {
    right: 0;
    bottom: 0;
    left: 0;
    width: 100%;
  }

  .experts-ai-learning-concierge {
    width: 100%;
    height: 100dvh;
    min-height: 100vh;
    border: 0;
    border-radius: 0;
  }

  .experts-ai-learning-concierge__launcher {
    margin-right: 16px;
    margin-bottom: 16px;
  }

  .experts-ai-learning-concierge__header {
    min-height: 80px;
    padding-top: max(16px, env(safe-area-inset-top));
  }

  .experts-ai-learning-concierge__brand {
    grid-template-columns: 40px minmax(0, 1fr);
  }

  .experts-ai-learning-concierge__brand-mark {
    width: 40px;
    height: 40px;
  }

  .experts-ai-learning-concierge__title {
    font-size: 15px;
  }

  .experts-ai-learning-concierge__footer {
    padding-bottom: max(8px, env(safe-area-inset-bottom));
  }
}