/* 费曼 Agent · 毛玻璃特色板块（保留小问动效） */
.fm-arena-section {
  margin: 0;
}

.feynman-challenge-root {
  --fm-accent: var(--accent, #7c5ce0);
  --fm-accent-soft: color-mix(in srgb, var(--accent) 16%, transparent);
  --fm-accent-glow: color-mix(in srgb, var(--accent) 32%, transparent);
  position: relative;
  border-radius: 22px;
  overflow: hidden;
  isolation: isolate;
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  height: 100%;
}

#feynman-challenge-root.feynman-box {
  padding: 0;
  background: transparent;
  border: none;
}

.fm-arena {
  position: relative;
  padding: 26px 26px 30px;
  background:
    radial-gradient(ellipse 85% 65% at 0% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 58%),
    radial-gradient(ellipse 75% 55% at 100% 8%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 52%),
    var(--glass-bg-subtle, rgba(255, 255, 255, 0.35));
  border: 1px solid var(--glass-border-default, rgba(255, 255, 255, 0.45));
  border-radius: 20px;
  backdrop-filter: blur(16px) saturate(1.25);
  -webkit-backdrop-filter: blur(16px) saturate(1.25);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 8%, transparent) inset,
    0 16px 48px color-mix(in srgb, var(--accent) 10%, transparent);
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  position: relative;
}

.fm-arena::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--accent) 5%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--accent) 5%, transparent) 1px, transparent 1px);
  background-size: 32px 32px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.35), transparent 90%);
  pointer-events: none;
}

.fm-arena::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--fm-accent-glow), transparent);
  opacity: 0.9;
}

/* ── 小问 Hero ── */
.fm-hero {
  display: grid;
  grid-template-columns: minmax(200px, 280px) 1fr;
  gap: 28px;
  align-items: center;
  margin-bottom: 28px;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.fm-hero-avatar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
  max-width: 260px;
  margin: 0 auto;
}

.fm-session-exit-btn {
  flex: 0 0 auto;
  width: calc(50% - 3px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 7px 6px;
  font-size: 0.72rem;
  font-weight: 500;
  font-family: inherit;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--muted) 82%, var(--text));
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--line) 88%, transparent);
  border-radius: 8px;
  cursor: pointer;
  opacity: 0.72;
  transition: opacity 0.15s ease, color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.fm-session-exit-btn:hover {
  opacity: 1;
  color: var(--muted);
  border-color: var(--line);
  background: color-mix(in srgb, var(--line) 22%, transparent);
}

.fm-session-exit-btn[hidden] {
  display: none !important;
}

.fm-panel-sidebar-foot {
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  width: 100%;
  padding: 6px 2px 14px;
  margin-top: 0;
}

.fm-panel-sidebar-mid {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.fm-panel-sidebar-center {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 8px;
}

.fm-hero-visual {
  position: relative;
  width: 100%;
  max-width: 260px;
  aspect-ratio: 1;
  margin: 0 auto;
  display: grid;
  place-items: center;
}

.fm-pulse-rings {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.fm-pulse-rings span {
  position: absolute;
  width: 58%;
  height: 58%;
  border-radius: 50%;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, transparent);
  box-shadow: 0 0 24px var(--fm-accent-soft);
  animation: fm-ring-pulse 3.6s ease-out infinite;
}

.fm-pulse-rings span:nth-child(2) {
  animation-delay: 1.2s;
  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
}

.fm-pulse-rings span:nth-child(3) {
  animation-delay: 2.4s;
  border-color: color-mix(in srgb, var(--accent) 30%, transparent);
}

.fm-hero-rays {
  position: absolute;
  width: 92%;
  height: 92%;
  border-radius: 50%;
  background: conic-gradient(
    from 0deg,
    transparent 0deg,
    color-mix(in srgb, var(--accent) 14%, transparent) 18deg,
    transparent 36deg,
    transparent 72deg,
    color-mix(in srgb, var(--accent) 10%, transparent) 90deg,
    transparent 108deg,
    transparent 144deg,
    color-mix(in srgb, var(--accent) 8%, transparent) 162deg,
    transparent 180deg,
    transparent 216deg,
    color-mix(in srgb, var(--accent) 10%, transparent) 234deg,
    transparent 252deg,
    transparent 288deg,
    color-mix(in srgb, var(--accent) 8%, transparent) 306deg,
    transparent 324deg
  );
  animation: fm-rays-spin 14s linear infinite;
  opacity: 0.75;
}

.fm-hero-avatar-wrap {
  position: relative;
  z-index: 2;
  width: 148px;
  height: 148px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at 35% 30%, var(--fm-accent-soft), var(--panel2, var(--glass-bg-card)));
  border: 2px solid color-mix(in srgb, var(--accent) 45%, var(--line));
  box-shadow:
    0 0 36px var(--fm-accent-soft),
    0 0 0 6px color-mix(in srgb, var(--accent) 10%, transparent);
}

.fm-hero-avatar-wrap [data-tutor-avatar] {
  filter: drop-shadow(0 4px 14px var(--fm-accent-soft));
}

.fm-hero-scan {
  position: absolute;
  inset: 14%;
  border-radius: 50%;
  background: linear-gradient(180deg, transparent 40%, var(--fm-accent-soft) 50%, transparent 60%);
  animation: fm-scan 4s ease-in-out infinite;
  pointer-events: none;
  z-index: 3;
  mix-blend-mode: multiply;
  opacity: 0.65;
}

.feynman-challenge-root.is-thinking .fm-pulse-rings span {
  animation-duration: 1.1s;
  border-color: color-mix(in srgb, var(--accent) 70%, transparent);
  box-shadow: 0 0 32px var(--fm-accent-glow);
}

.feynman-challenge-root.is-thinking .fm-hero-rays {
  animation-duration: 4s;
  opacity: 1;
}

.feynman-challenge-root.is-active .fm-pulse-rings span {
  animation-duration: 2.2s;
}

.fm-hero-copy {
  min-width: 0;
}

.fm-hero-eyebrow {
  margin: 0 0 10px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: color-mix(in srgb, var(--accent) 75%, var(--muted));
}

.fm-hero-title {
  margin: 0 0 10px;
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text);
  font-family: var(--ui-font-display, var(--font-display));
}

.fm-hero-desc {
  margin: 0 0 14px;
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--muted);
  max-width: none;
  white-space: nowrap;
}

.fm-hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--text);
  background: var(--fm-accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
}

.fm-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--fm-accent-glow);
  animation: fm-status-blink 2s ease-in-out infinite;
}

.feynman-challenge-root.is-thinking .fm-status-dot {
  animation-duration: 0.7s;
}

/* ── 陪练会话态：隐藏 Hub 文案与老师说话区，不改头像尺寸 ── */
.fm-arena.is-session .fm-hero-hub-copy {
  display: none !important;
}

.fm-hero-session-pane,
.fm-arena.is-session .fm-hero-session-pane {
  display: none !important;
}

.fm-hero-session-pane[hidden] {
  display: none !important;
}

.fm-teacher-speak {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 18px 20px;
  min-height: 132px;
  border-radius: 16px;
  background: var(--glass-bg-card, rgba(255, 255, 255, 0.22));
  border: 1px solid color-mix(in srgb, var(--accent) 22%, var(--line));
  box-shadow: 0 8px 28px color-mix(in srgb, var(--accent) 8%, transparent);
}

.fm-teacher-speak-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.fm-teacher-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
}

.fm-teacher-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 0.68rem;
  color: var(--muted);
  background: var(--fm-accent-soft);
  border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--line));
}

.fm-teacher-text {
  margin: 0;
  font-size: clamp(0.95rem, 2.2vw, 1.08rem);
  line-height: 1.68;
  color: var(--text);
}

.fm-arena.is-session .fm-console {
  flex: 1;
  min-height: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 0;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.fm-arena.is-session .fm-session {
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.fm-thread-empty {
  margin: 0;
  font-size: 0.82rem;
  text-align: center;
  padding: 20px 12px;
}

/* ── 交流方式选择 ── */
.fm-interact-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fm-interact-mode-rail {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.fm-interact-chip {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 10px;
  align-items: start;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--glass-border-default, rgba(255, 255, 255, 0.45));
  background: var(--glass-bg-subtle, rgba(255, 255, 255, 0.35));
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.fm-interact-chip iconify-icon {
  grid-row: 1 / span 2;
  color: var(--accent);
}

.fm-interact-chip-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.fm-interact-chip-main strong {
  font-size: 0.86rem;
}

.fm-interact-chip-main em {
  font-style: normal;
  font-size: 0.72rem;
  color: var(--muted);
  line-height: 1.4;
}

.fm-interact-chip.is-active {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, var(--glass-bg-subtle));
  box-shadow: 0 0 16px var(--fm-accent-soft);
}

.fm-channel-seg {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.fm-channel-btn {
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--input-bg);
  color: var(--muted);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.fm-channel-btn.is-active {
  border-color: color-mix(in srgb, var(--accent) 50%, var(--line));
  color: var(--accent);
  background: var(--fm-accent-soft);
  font-weight: 600;
}

.fm-session-interact {
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--input-bg);
}

.fm-phone-panel {
  padding: 18px 16px;
  border-radius: 12px;
  border: 1px dashed color-mix(in srgb, var(--accent) 35%, var(--line));
  background: color-mix(in srgb, var(--accent) 6%, var(--input-bg));
  text-align: center;
}

.fm-phone-hint {
  margin: 0 0 14px;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text);
}

.fm-phone-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.fm-voice-in.is-channel-primary,
#fm-voice-in.is-channel-primary {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--fm-accent-soft);
}

/* ── 控制台 ── */
.fm-console {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px;
  border-radius: 16px;
  background: var(--glass-bg-card, rgba(255, 255, 255, 0.14));
  border: 1px solid var(--glass-border-default, rgba(255, 255, 255, 0.45));
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  overflow: hidden;
  flex: 1;
  min-height: 0;
}

/* ── Hub 控制台：占满 Hero 下方（参考音乐播放器 flex 填充 + glass 分区） ── */
.fm-arena:not(.is-session) {
  padding: 14px 16px 12px;
  flex: 1 1 0;
  min-height: 0;
}

.fm-arena:not(.is-session) .fm-hero {
  margin-bottom: 10px;
}

.fm-arena:not(.is-session) .fm-console {
  flex: 1 1 0;
  min-height: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: transparent;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.fm-hub-layout {
  flex: 1 1 0;
  min-height: 0;
  display: grid;
  grid-template-rows: 1fr 1fr;
  gap: 10px;
  overflow: hidden;
}

.fm-hub-panel-mode.fm-hub-glass-panel,
.fm-hub-concept-strip.fm-hub-glass-panel {
  min-height: 0;
}

/* 今天讲什么 · 输入在上、推荐在下 */
.fm-hub-concept-strip {
  display: flex;
  flex-direction: column;
  padding: 12px 14px;
  gap: 8px;
}

.fm-hub-concept-strip.is-combo-open {
  overflow: visible;
  z-index: 40;
}

.fm-hub-layout.is-combo-open {
  overflow: visible;
  z-index: 35;
}

.fm-arena:not(.is-session) .fm-console:has(.is-combo-open) {
  overflow: visible;
}

.feynman-challenge-root:has(.is-combo-open) {
  overflow: visible;
}

.feynman-challenge-root:has(.is-combo-open) .fm-arena:not(.is-session) {
  overflow: visible;
}

#sec-feynman:has(.is-combo-open) {
  overflow: visible;
}

.fm-hub-concept-strip .fm-hub-section-head {
  margin-bottom: 4px;
  flex-shrink: 0;
}

.fm-hub-concept-strip .fm-hub-section-title {
  font-size: 1.05rem;
}

.fm-hub-input-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-shrink: 0;
  position: relative;
  z-index: 6;
}

.fm-hub-col {
  min-width: 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.fm-hub-glass-panel {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 12px;
  border-radius: 16px;
  background: var(--glass-bg-card, rgba(255, 255, 255, 0.14));
  border: 1px solid var(--glass-border-default, rgba(255, 255, 255, 0.45));
  backdrop-filter: blur(12px) saturate(1.2);
  -webkit-backdrop-filter: blur(12px) saturate(1.2);
  box-shadow: 0 2px 12px color-mix(in srgb, var(--accent) 6%, transparent);
  overflow: hidden;
}

.fm-hub-col .fm-section-label {
  flex-shrink: 0;
  margin: 0;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--muted);
  line-height: 1.2;
}

/* Hub 分区标题：对齐全站 section-head（主标题 + 副标题） */
.fm-hub-section-head {
  flex-shrink: 0;
  margin: 0 0 6px;
}

.fm-hub-section-title {
  margin: 0 0 4px;
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--ui-font-display, var(--font-display));
  color: var(--text);
  line-height: 1.35;
}

.fm-hub-section-desc {
  margin: 0;
  font-size: 0.84rem;
  line-height: 1.55;
  color: var(--muted);
}

/* 陪练模式三横条（等高卡片内拉伸） */
.fm-hub-panel-mode .fm-mode-rail {
  flex: 1 1 0;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  align-items: stretch;
}

.fm-hub-panel-mode .fm-mode-chip {
  display: flex;
  align-items: center;
  align-content: center;
  text-align: left;
  padding: 8px 10px;
  gap: 10px;
  height: 100%;
  min-height: 52px;
  max-height: none;
  box-sizing: border-box;
  overflow: hidden;
}

.fm-hub-panel-mode .fm-mode-chip[data-fm-mode="standard"] {
  --fm-hub-icon-color: #7c5ce0;
}

.fm-hub-panel-mode .fm-mode-chip[data-fm-mode="reverse"] {
  --fm-hub-icon-color: #d97706;
}

.fm-hub-panel-mode .fm-mode-chip[data-fm-mode="flaw"] {
  --fm-hub-icon-color: #e11d48;
}

.fm-hub-panel-mode .fm-hub-chip-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: center;
  width: 34px;
  min-width: 34px;
}

.fm-hub-panel-mode .fm-hub-chip-icon iconify-icon {
  width: 30px;
  height: 30px;
  color: var(--fm-hub-icon-color, var(--accent));
}

.fm-hub-panel-mode .fm-hub-chip-body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 3px;
  align-self: center;
}

.fm-hub-chip-title-row {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  max-width: 100%;
}

.fm-hub-chip-title {
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.35;
  color: var(--text);
  white-space: nowrap;
}

.fm-hub-chip-tag {
  font-style: normal;
  font-size: 0.58rem;
  font-weight: 600;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--fm-accent-soft);
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
  flex-shrink: 0;
  line-height: 1.3;
}

.fm-hub-chip-sub {
  font-size: 0.68rem;
  line-height: 1.45;
  color: var(--muted);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  width: 100%;
}

/* 历史推荐 · 标题左侧、最多 4 标签单行右侧 */
.fm-history-rec-inline {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 0;
  min-width: 0;
}

.fm-history-rec-inline .fm-section-label {
  flex-shrink: 0;
  margin: 0;
  white-space: nowrap;
  font-size: 0.68rem;
}

.fm-hub-rec-inline.fm-chip-row {
  flex: 1 1 0;
  min-width: 0;
  display: inline-flex;
  flex-direction: row;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  overflow: hidden;
}

/* 对齐学习地图二级标题旁 map-topic-bubble：紧凑小标签，不拉伸 */
.fm-hub-rec-inline .fm-history-chip.map-topic-bubble {
  flex: 0 0 auto;
  width: auto;
  max-width: none;
  height: auto;
  min-height: auto;
  margin: 0;
  padding: 2px 8px;
  font-size: 0.62rem;
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0.03em;
  white-space: nowrap;
  cursor: pointer;
  font-family: inherit;
  color: color-mix(in srgb, var(--text) 26%, var(--muted));
  background: color-mix(in srgb, var(--panel) 18%, transparent);
  backdrop-filter: blur(16px) saturate(190%);
  -webkit-backdrop-filter: blur(16px) saturate(190%);
  border: 1px solid color-mix(in srgb, #fff 32%, var(--line));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 42%, transparent),
    0 1px 3px color-mix(in srgb, var(--text) 5%, transparent);
  border-radius: 999px;
  transition: border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
}

.fm-hub-rec-inline .fm-history-chip.map-topic-bubble:hover {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--line));
  color: color-mix(in srgb, var(--accent) 75%, var(--text));
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 42%, transparent),
    0 2px 8px color-mix(in srgb, var(--accent) 18%, transparent);
}

.fm-hub-input-wrap {
  flex: 1 1 0;
  min-width: 0;
  max-width: calc(100% - 178px);
  position: relative;
  z-index: 7;
}

.fm-hub-input-wrap .fm-concept-combo.is-open {
  z-index: 100;
}

.fm-hub-input-wrap .fm-concept-combo {
  width: 100%;
}

.fm-hub-input-wrap .fm-concept-input {
  width: 100%;
  height: 44px;
  min-height: 44px;
  padding: 0 38px 0 14px;
  border-radius: 12px;
  font-size: 0.9rem;
  font-weight: 500;
  box-sizing: border-box;
}

/* Hub · 概念选择上拉（最高到陪练模式卡片顶，具体高度由 JS 测量） */
.fm-concept-combo-up .fm-concept-menu-wrap {
  top: auto;
  bottom: calc(100% + 6px);
  z-index: 110;
  max-height: 72px;
}

.fm-concept-combo-up.is-open .fm-concept-toggle iconify-icon {
  transform: rotate(180deg);
}

.fm-concept-combo-up .fm-concept-alpha {
  align-self: flex-end;
  position: sticky;
  bottom: 0;
  top: auto;
}

.fm-hub-start-btn {
  display: flex !important;
  align-items: center;
  justify-content: center;
  width: 100%;
  flex: 1 1 0;
  min-height: 68px;
  flex-shrink: 0;
  padding: 0 20px;
  border-radius: 18px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.fm-hub-go-btn {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent);
  background: linear-gradient(
    135deg,
    color-mix(in srgb, var(--accent) 92%, #fff),
    color-mix(in srgb, var(--accent) 68%, #6366f1)
  ) !important;
  color: #fff !important;
  box-shadow:
    0 8px 32px color-mix(in srgb, var(--accent) 42%, transparent),
    0 0 0 1px color-mix(in srgb, #fff 25%, transparent) inset;
  animation: fm-hub-go-pulse 2.4s ease-in-out infinite;
}

@keyframes fm-hub-go-pulse {
  0%,
  100% {
    box-shadow:
      0 8px 32px color-mix(in srgb, var(--accent) 42%, transparent),
      0 0 0 1px color-mix(in srgb, #fff 25%, transparent) inset;
  }
  50% {
    box-shadow:
      0 12px 40px color-mix(in srgb, var(--accent) 55%, transparent),
      0 0 28px color-mix(in srgb, var(--accent) 22%, transparent),
      0 0 0 1px color-mix(in srgb, #fff 35%, transparent) inset;
  }
}

.fm-hub-go-glow {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    105deg,
    transparent 35%,
    color-mix(in srgb, #fff 38%, transparent) 50%,
    transparent 65%
  );
  animation: fm-hub-go-shine 2.8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes fm-hub-go-shine {
  0% {
    transform: translateX(-120%);
  }
  100% {
    transform: translateX(120%);
  }
}

.fm-hub-go-inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  width: 100%;
  color: #fff;
  text-shadow: 0 1px 2px color-mix(in srgb, var(--accent) 40%, transparent);
}

.fm-hub-go-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  flex: 1 1 auto;
  min-width: 0;
}

.fm-hub-go-text strong {
  font-size: 1.18rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  line-height: 1.2;
}

.fm-hub-go-text em {
  font-size: 0.76rem;
  font-style: normal;
  font-weight: 600;
  opacity: 0.92;
  letter-spacing: 0.04em;
}

.fm-hub-go-arrow {
  flex-shrink: 0;
  margin-left: auto;
  animation: fm-hub-go-bounce 1.15s ease-in-out infinite;
}

@keyframes fm-hub-go-bounce {
  0%,
  100% {
    transform: translateX(0);
  }
  50% {
    transform: translateX(5px);
  }
}

.fm-hub-go-btn:hover {
  transform: translateY(-2px) scale(1.01);
  filter: brightness(1.06);
}

.fm-hub-go-btn:active {
  transform: translateY(0) scale(0.99);
}

.fm-hub-go-btn-compact {
  flex: 0 0 auto;
  width: auto;
  min-width: 136px;
  max-width: 152px;
  height: 52px;
  min-height: 52px;
  padding: 0 12px 0 10px;
  margin-left: 0;
  border-radius: 14px;
  animation: fm-hub-go-pulse 2.4s ease-in-out infinite;
}

.fm-hub-go-btn-compact .fm-hub-go-inner {
  gap: 8px;
  width: auto;
}

.fm-hub-go-btn-compact .fm-hub-go-text strong {
  font-size: 0.95rem;
  letter-spacing: 0.08em;
}

.fm-hub-go-btn-compact iconify-icon {
  width: 44px !important;
  height: 44px !important;
}

.fm-hub-go-btn-compact .fm-hub-go-text {
  align-items: center;
}

.fm-hub-go-btn-compact .fm-hub-go-text em,
.fm-hub-go-btn-compact .fm-hub-go-arrow {
  display: none;
}

.fm-hub-start-btn iconify-icon {
  flex-shrink: 0;
}

.fm-section-label {
  display: block;
  margin: 0 0 10px;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--muted);
}

/* 陪练模式 */
.fm-mode-rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.fm-mode-chip {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 4px 10px;
  align-items: start;
  padding: 14px 14px 12px;
  border-radius: 14px;
  border: 1px solid var(--glass-border-default, rgba(255, 255, 255, 0.45));
  background: var(--glass-bg-subtle, rgba(255, 255, 255, 0.35));
  color: var(--text);
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.fm-mode-chip iconify-icon {
  grid-row: 1 / span 2;
  color: var(--accent);
  opacity: 0.9;
}

.fm-mode-chip-main {
  display: flex;
  align-items: center;
  gap: 8px;
}

.fm-mode-chip-main strong {
  font-size: 0.88rem;
}

.fm-mode-chip-main em {
  font-style: normal;
  font-size: 0.62rem;
  padding: 2px 7px;
  border-radius: 999px;
  background: var(--fm-accent-soft);
  color: color-mix(in srgb, var(--accent) 80%, var(--text));
  font-weight: 600;
}

.fm-mode-chip-desc {
  grid-column: 2;
  font-size: 0.72rem;
  line-height: 1.45;
  color: var(--muted);
}

.fm-mode-chip:hover {
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
  background: color-mix(in srgb, var(--accent) 6%, var(--glass-bg-subtle));
}

.fm-mode-chip.is-active {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, var(--glass-bg-subtle));
  box-shadow: 0 0 20px var(--fm-accent-soft);
}

/* 概念选择 */
.fm-concept-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: visible;
}

.fm-concept-hint {
  margin: 0;
  font-size: 0.76rem;
  color: var(--muted);
}

.fm-concept-row {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.fm-concept-field {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
  position: relative;
  z-index: 2;
}

.fm-concept-combo {
  position: relative;
  width: 100%;
}

.fm-concept-input {
  width: 100%;
  padding: 12px 42px 12px 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--input-bg);
  color: var(--text);
  font: inherit;
  box-sizing: border-box;
}

.fm-concept-input::placeholder {
  color: var(--muted);
}

.fm-concept-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--fm-accent-soft);
}

.fm-concept-toggle {
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  width: 34px;
  height: 34px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  display: grid;
  place-items: center;
  z-index: 3;
  pointer-events: auto;
}

.fm-concept-toggle iconify-icon {
  pointer-events: none;
}

.fm-concept-toggle:hover {
  background: var(--fm-accent-soft);
  color: var(--accent);
}

.fm-concept-combo.is-open {
  z-index: 80;
}

.fm-concept-menu-wrap {
  position: absolute;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  z-index: 90;
  display: flex;
  width: 100%;
  gap: 0;
  max-height: min(220px, 36vh);
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.55);
  background-color: #f3f7fc !important;
  background-image: linear-gradient(180deg, #ffffff 0%, #eef3fa 100%) !important;
  box-shadow:
    0 14px 40px rgba(15, 23, 42, 0.16),
    0 0 0 1px rgba(255, 255, 255, 0.85) inset;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.fm-concept-menu-wrap[hidden] {
  display: none !important;
}

.fm-concept-menu {
  flex: 1;
  min-width: 0;
  overflow: visible;
  background: transparent;
}

.fm-concept-alpha {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 26px;
  flex-shrink: 0;
  padding: 6px 2px;
  border-left: 1px solid rgba(148, 163, 184, 0.35);
  background: #e9f0f8 !important;
  overflow: visible;
  position: sticky;
  top: 0;
  align-self: flex-start;
}

.fm-concept-alpha[hidden] {
  display: none !important;
}

.fm-alpha-btn {
  border: none;
  background: transparent;
  color: color-mix(in srgb, var(--accent) 70%, var(--muted));
  font-size: 0.58rem;
  font-weight: 700;
  line-height: 1.1;
  padding: 2px 0;
  cursor: pointer;
  font-family: inherit;
}

.fm-alpha-btn:hover {
  color: var(--accent);
}

.fm-concept-list {
  margin: 0;
  padding: 6px 6px 14px;
  list-style: none;
}

.fm-concept-letter {
  padding: 6px 10px 4px;
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--accent);
  background: transparent;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 70%, transparent);
}

.fm-concept-option {
  display: block;
  width: 100%;
  padding: 9px 12px;
  border: none;
  border-radius: 8px;
  background: transparent;
  color: #1e293b;
  font: inherit;
  font-size: 0.84rem;
  text-align: left;
  cursor: pointer;
}

.fm-concept-option:hover,
.fm-concept-option:focus-visible {
  background: rgba(124, 92, 224, 0.1);
  outline: none;
}

.fm-concept-option.is-selected {
  background: color-mix(in srgb, var(--accent) 18%, transparent);
  color: var(--text);
  font-weight: 600;
}

.fm-concept-empty {
  padding: 10px 12px;
  font-size: 0.82rem;
  color: var(--muted);
}

.fm-start-btn {
  flex-shrink: 0;
  align-self: flex-start;
  height: 46px;
  padding-inline: 18px;
  white-space: nowrap;
}

.fm-history-rec,
.fm-recent {
  padding-top: 2px;
}

.fm-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.fm-history-chip {
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: var(--input-bg);
  font-size: 0.76rem;
  cursor: pointer;
  color: var(--text);
  font: inherit;
  transition: border-color 0.15s, color 0.15s, box-shadow 0.15s;
}

.fm-history-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 12px var(--fm-accent-soft);
}

.fm-recent-list li {
  display: flex;
  justify-content: space-between;
  padding: 8px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.84rem;
  color: var(--text);
}

.fm-recent-list em {
  font-style: normal;
  color: var(--muted);
  font-size: 0.76rem;
}

/* ── 陪练进行中 ── */
.fm-session {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.fm-session-head {
  display: flex;
  align-items: center;
  gap: 12px;
}

.fm-session-title {
  flex: 1;
  min-width: 0;
}

.fm-recent-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.fm-session-title h3 {
  margin: 4px 0 0;
  font-size: 1rem;
  color: var(--text);
}

.fm-mode-badge {
  font-size: 0.66rem;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--fm-accent-soft);
  color: var(--accent);
}

.fm-combo {
  font-size: 0.86rem;
  white-space: nowrap;
  color: var(--text);
}

.fm-combo em {
  font-style: normal;
  font-weight: 700;
  color: #d97706;
}

.fm-boss-bar {
  display: flex;
  align-items: center;
  gap: 10px;
}

.fm-stage-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

.fm-msg {
  margin-bottom: 12px;
}

.fm-input-row {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.fm-boss-label {
  font-size: 0.72rem;
  color: var(--muted);
  white-space: nowrap;
}

.fm-boss-track {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
}

.fm-boss-track i {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--accent), color-mix(in srgb, var(--accent) 60%, #86efac), #86efac);
  transition: width 0.45s cubic-bezier(0.34, 1.2, 0.64, 1);
}

.fm-boss-val {
  font-size: 0.78rem;
  font-weight: 600;
  min-width: 36px;
  text-align: right;
  color: var(--text);
}

.fm-stage {
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: var(--input-bg);
}

.fm-stage.is-active {
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.fm-stage.is-done {
  border-color: color-mix(in srgb, #86efac 50%, var(--line));
  color: #16a34a;
  background: color-mix(in srgb, #86efac 12%, transparent);
}

.fm-stage-line {
  width: 12px;
  height: 1px;
  background: var(--line);
  flex-shrink: 0;
}

.fm-stage-hint {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.fm-thread {
  max-height: min(320px, 42vh);
  overflow-y: auto;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--input-bg);
}

.fm-msg-role {
  display: block;
  font-size: 0.66rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.fm-msg p {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text);
}

.fm-turn-foot .fm-asr-label {
  font-size: 0.75rem;
  color: var(--muted);
  line-height: 1.4;
}

.fm-turn-foot .fm-input-row {
  align-items: center;
}

.fm-turn-foot .fm-input-row textarea {
  min-height: 40px;
  height: 40px;
  max-height: 40px;
  padding: 8px 12px;
  line-height: 1.35;
  box-sizing: border-box;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--line) 75%, rgba(255, 255, 255, 0.35));
  background: color-mix(in srgb, var(--panel) 50%, rgba(255, 255, 255, 0.22));
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
  outline: none;
  transition:
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    background 0.2s ease;
}

.fm-turn-foot .fm-input-row textarea:focus,
.fm-turn-foot .fm-input-row textarea:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 42%, rgba(255, 255, 255, 0.55));
  background: color-mix(in srgb, var(--panel) 38%, rgba(255, 255, 255, 0.34));
  box-shadow:
    0 0 0 3px var(--fm-accent-soft),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}

.fm-turn-foot .fm-input-row .icon-btn {
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  box-sizing: border-box;
  border: 1px solid color-mix(in srgb, var(--line) 75%, rgba(255, 255, 255, 0.35));
  background: color-mix(in srgb, var(--input-bg) 70%, rgba(255, 255, 255, 0.18));
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.fm-turn-foot .fm-input-row .icon-btn:focus,
.fm-turn-foot .fm-input-row .icon-btn:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 38%, var(--line));
  box-shadow: 0 0 0 3px var(--fm-accent-soft);
}

.fm-turn-foot .fm-input-row #fm-send {
  height: 40px;
  min-height: 40px;
  padding: 0 18px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  box-sizing: border-box;
  line-height: 1;
}

.fm-input-row textarea {
  flex: 1;
  resize: none;
  min-height: 44px;
  max-height: 72px;
  padding: 10px;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font: inherit;
}

.fm-session .btn.ghost,
.fm-report .btn.ghost {
  color: var(--muted);
  border: 1px solid var(--line);
  background: var(--input-bg);
}

.fm-session .btn.ghost:hover,
.fm-report .btn.ghost:hover {
  color: var(--accent);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}

.fm-report {
  padding: 22px;
  border-radius: 16px;
  text-align: center;
  color: var(--text);
}

.fm-report h3 {
  margin: 0 0 12px;
  color: var(--text);
}

.fm-report-score strong {
  font-size: 2rem;
  color: var(--accent);
}

.fm-report-gaps {
  text-align: left;
  margin: 16px 0;
  padding: 12px;
  border-radius: 10px;
  background: var(--input-bg);
  border: 1px solid var(--line);
}

.fm-report-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-top: 16px;
}

@keyframes fm-ring-pulse {
  0% {
    transform: scale(0.72);
    opacity: 0.85;
  }
  70% {
    transform: scale(1.35);
    opacity: 0;
  }
  100% {
    transform: scale(1.35);
    opacity: 0;
  }
}

@keyframes fm-rays-spin {
  to { transform: rotate(360deg); }
}

@keyframes fm-scan {
  0%, 100% { transform: translateY(-30%); opacity: 0; }
  45% { opacity: 0.7; }
  50% { transform: translateY(30%); opacity: 0.7; }
  55% { opacity: 0; }
}

@keyframes fm-status-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

@media (max-width: 860px) {
  .fm-hero {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .fm-hub-layout {
    grid-template-rows: 1fr 1fr;
  }

  .fm-hub-input-row {
    flex-wrap: wrap;
  }

  .fm-history-rec-inline {
    flex-wrap: wrap;
    align-items: flex-start;
  }

  .fm-hub-rec-inline.fm-chip-row {
    flex-wrap: wrap;
  }

  .fm-hub-go-btn-compact {
    flex: 1 1 auto;
    max-width: none;
    min-width: 0;
  }

  .fm-hub-panel-mode .fm-mode-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .fm-arena.is-session .fm-interact-mode-rail {
    grid-template-columns: 1fr;
  }

  .fm-arena.is-session .fm-hero {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .fm-arena.is-session .fm-hero-visual {
    margin: 0 auto;
  }

  .fm-teacher-speak-head {
    flex-wrap: wrap;
  }

  .fm-hero-desc {
    margin-left: auto;
    margin-right: auto;
    white-space: normal;
  }

  .fm-hero-status {
    margin: 0 auto;
  }

  .fm-mode-rail {
    grid-template-columns: 1fr;
  }

  .fm-concept-row {
    flex-direction: column;
  }

  .fm-start-btn {
    width: 100%;
  }
}

@media (max-width: 520px) {
  .fm-arena {
    padding: 18px 16px 22px;
  }

  .fm-console {
    padding: 16px;
  }

  .fm-hero-avatar-wrap {
    width: 120px;
    height: 120px;
  }
}

/* ── Session 陪练面板：左列头像+侧栏，右列整页对话框 ── */
.fm-arena.is-session {
  display: grid;
  grid-template-columns: minmax(200px, 280px) minmax(0, 1fr);
  grid-template-rows: auto 1fr;
  gap: 12px 0;
  align-items: stretch;
  overflow: hidden;
  padding: 0 0 0 22px;
  min-height: 0;
  height: 100%;
}

.fm-arena.is-session .fm-hero {
  grid-column: 1;
  grid-row: 1;
  margin-bottom: 0;
  display: block;
  padding-top: 10px;
}

.fm-arena.is-session #fm-panel-sidebar {
  grid-column: 1;
  grid-row: 2;
  min-height: 0;
  height: 100%;
  align-self: stretch;
  overflow: visible;
}

.fm-arena.is-session .fm-panel-chat-wrap {
  border: none;
  border-radius: 0;
  background: transparent;
  margin-right: 0;
  padding-right: 0;
}

.fm-chat-panel-shell {
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: color-mix(in srgb, var(--panel) 72%, rgba(255, 255, 255, 0.06));
  border: none;
  border-radius: 0;
}

.fm-chat-panel-head {
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-start;
  padding: 10px 16px 8px;
  border-bottom: 1px solid color-mix(in srgb, var(--accent) 10%, var(--line));
  font-size: 0.78rem;
  color: var(--muted);
}

.fm-chat-panel-title {
  font-weight: 600;
  color: var(--text);
  flex-shrink: 0;
}

.fm-chat-panel-head .chat-voice-out-btn {
  flex-shrink: 0;
}

.fm-chat-panel-head .chat-voice-out-btn[hidden],
#fm-voice-out-toggle[hidden] {
  display: none !important;
}

.fm-arena.is-session .fm-panel-foot {
  flex-shrink: 0;
  padding: 6px 14px 10px 12px;
  background: color-mix(in srgb, var(--panel) 58%, rgba(255, 255, 255, 0.04));
  border: none;
  border-top: 1px solid color-mix(in srgb, var(--accent) 12%, var(--line));
  border-radius: 0;
  box-sizing: border-box;
}

.fm-arena.is-session .fm-turn-foot .fm-turn-input-block {
  padding-bottom: 6px;
}

.fm-arena.is-session .fm-turn-foot .fm-input-row {
  box-sizing: border-box;
}

.fm-arena.is-session .fm-console {
  grid-column: 2;
  grid-row: 1 / -1;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
  align-self: stretch;
  height: 100%;
  border-left: none;
  margin-left: 0;
}

.fm-session-panel {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  overflow: hidden;
  height: 100%;
}

.fm-panel-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 12px;
  flex: 1;
  min-height: 0;
  overflow: hidden;
}

.fm-panel-sidebar {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 0;
  height: 100%;
  padding: 0 4px 0 2px;
  border: none;
  background: transparent;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  overflow: visible;
}

.fm-panel-mode-seg {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.fm-panel-mode-seg .chat-mode-btn {
  flex: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 7px 6px;
  font-size: 0.72rem;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--muted);
  background: transparent;
  cursor: pointer;
  font: inherit;
}

.fm-panel-mode-seg .chat-mode-btn.active {
  color: var(--text);
  background: var(--hover-bg);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--line));
}

.fm-v-progress-head {
  flex-shrink: 0;
  margin-top: 2px;
  margin-bottom: -2px;
  padding: 0 2px 0;
}

.fm-v-progress-head-title {
  margin: 0 0 2px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--text);
}

.fm-v-progress-head-desc {
  margin: 0;
  font-size: 0.65rem;
  line-height: 1.4;
  color: color-mix(in srgb, var(--muted) 78%, transparent);
}

.fm-v-progress {
  display: flex;
  align-items: flex-start;
  justify-content: stretch;
  flex: 0 0 auto;
  min-height: 0;
  margin-top: 0;
  padding-left: 0;
  overflow: visible;
}

.fm-v-progress-track {
  position: relative;
  width: 100%;
  padding-left: 26px;
  overflow: visible;
}

.fm-v-progress-rail {
  position: absolute;
  left: 8px;
  top: 10px;
  bottom: 10px;
  width: 4px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--line) 70%, transparent);
  overflow: hidden;
}

.fm-v-progress-rail::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--accent) 12%, transparent) 45%,
    transparent 100%
  );
  animation: fm-rail-shimmer 2.8s ease-in-out infinite;
}

@keyframes fm-rail-shimmer {
  0%,
  100% {
    transform: translateY(-30%);
    opacity: 0.35;
  }
  50% {
    transform: translateY(30%);
    opacity: 0.85;
  }
}

.fm-v-progress-flow {
  display: block;
  width: 100%;
  height: 0;
  border-radius: 999px;
  position: relative;
  z-index: 1;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--accent) 75%, #fff),
    var(--accent) 55%,
    color-mix(in srgb, var(--accent) 65%, #a7f3d0)
  );
  transition: height 0.65s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 14px color-mix(in srgb, var(--accent) 40%, transparent);
  overflow: hidden;
}

.fm-v-progress-flow::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(
    180deg,
    transparent,
    rgba(255, 255, 255, 0.55),
    transparent
  );
  animation: fm-progress-stream 2.2s ease-in-out infinite;
}

@keyframes fm-progress-stream {
  0% {
    top: -45%;
  }
  100% {
    top: 105%;
  }
}

.fm-v-progress-step {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  position: relative;
}

.fm-v-progress-dot {
  position: absolute;
  left: -20px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  background: var(--panel);
  box-sizing: border-box;
  z-index: 2;
  transition: background 0.3s, border-color 0.3s;
}

.fm-v-progress-step.is-done .fm-v-progress-dot,
.fm-v-progress-step.is-active .fm-v-progress-dot {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 88%, #fff);
  box-shadow: 0 0 8px color-mix(in srgb, var(--accent) 35%, transparent);
}

.fm-v-progress-step.is-active .fm-v-progress-dot {
  animation: none;
}

.fm-v-progress-step.is-active .fm-v-progress-dot::after {
  content: "";
  position: absolute;
  inset: -7px;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent) 45%, transparent);
  animation: fm-v-dot-ring 1.8s ease-out infinite;
}

@keyframes fm-v-dot-ring {
  0% {
    transform: scale(0.75);
    opacity: 0.85;
  }
  100% {
    transform: scale(1.55);
    opacity: 0;
  }
}

.fm-v-progress-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--muted);
  line-height: 1.35;
}

.fm-v-progress-step.is-active .fm-v-progress-label {
  color: var(--text);
}

.fm-v-progress-step.is-done .fm-v-progress-label {
  color: color-mix(in srgb, var(--accent) 70%, var(--text));
}

.fm-stage-hint-sidebar {
  margin: 0;
  font-size: 0.72rem;
  line-height: 1.5;
  flex-shrink: 0;
}

.fm-panel-meta {
  font-size: 0.68rem;
  flex-shrink: 0;
}

.fm-panel-main {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  min-width: 0;
  overflow: hidden;
  height: 100%;
}

.fm-panel-chat-wrap {
  position: relative;
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  border-radius: 16px;
  border: 1px solid var(--glass-border-default, rgba(255, 255, 255, 0.45));
  background: color-mix(in srgb, var(--panel) 55%, transparent);
  height: 100%;
}

.fm-thread-wechat {
  flex: 1 1 0;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.fm-bubble-row {
  display: flex;
  width: 100%;
}

.fm-bubble-row.is-agent {
  justify-content: flex-start;
}

.fm-bubble-row.is-user {
  justify-content: flex-end;
}

.fm-bubble {
  max-width: 82%;
  padding: 10px 12px;
  border-radius: 14px;
  font-size: 0.86rem;
  line-height: 1.55;
  position: relative;
}

.fm-bubble p {
  margin: 0;
}

.fm-bubble-em {
  font-weight: 700;
  font-style: normal;
  color: var(--accent, #7c5ce0);
}

.fm-bubble-row.is-agent .fm-bubble .fm-bubble-em {
  color: color-mix(in srgb, var(--accent) 88%, #4a3d8f);
}

.fm-bubble-row.is-user .fm-bubble .fm-bubble-em {
  color: color-mix(in srgb, var(--accent) 55%, #fff);
}

.fm-bubble-row.is-agent .fm-bubble {
  background: var(--glass-bg-card, rgba(255, 255, 255, 0.22));
  border: 1px solid var(--line);
  border-radius: 14px 14px 14px 4px;
  color: var(--text);
}

.fm-bubble-row.is-user .fm-bubble {
  background: color-mix(in srgb, var(--accent) 18%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
  border-radius: 14px 14px 4px 14px;
  color: var(--text);
}

.fm-bubble.is-streaming {
  opacity: 0.92;
}

.fm-welcome-reveal,
.fm-agent-reveal {
  margin: 0;
  line-height: 1.55;
}

.fm-welcome-reveal-text,
.fm-agent-reveal-text {
  display: inline-block;
  max-width: 100%;
  clip-path: inset(0 100% 0 0);
  will-change: clip-path;
}

.fm-bubble.is-welcome-revealing .fm-welcome-reveal-text,
.fm-bubble.is-agent-revealing .fm-agent-reveal-text {
  animation: fm-agent-sweep 1.85s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes fm-agent-sweep {
  from {
    clip-path: inset(0 100% 0 0);
  }
  to {
    clip-path: inset(0 0 0 0);
  }
}

.fm-welcome-reveal-text.is-revealed,
.fm-agent-reveal-text.is-revealed {
  clip-path: inset(0 0 0 0);
}

.fm-bubble-stream {
  opacity: 0.6;
  animation: fm-bubble-stream 1s ease-in-out infinite;
}

@keyframes fm-bubble-stream {
  0%,
  100% {
    opacity: 0.35;
  }
  50% {
    opacity: 1;
  }
}

.fm-bubble-verdict {
  display: block;
  margin-top: 4px;
  font-size: 0.68rem;
  font-weight: 700;
}

.fm-bubble-verdict.is-good { color: #4ade80; }
.fm-bubble-verdict.is-ok { color: #fbbf24; }
.fm-bubble-verdict.is-bad { color: #f87171; }

.fm-phone-dial-overlay {
  position: absolute;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--panel) 72%, transparent);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.fm-phone-dial-overlay[hidden] {
  display: none !important;
}

.fm-phone-dial-card {
  position: relative;
  text-align: center;
  padding: 24px 28px;
  border-radius: 20px;
  background: var(--glass-bg-card, rgba(255, 255, 255, 0.2));
  border: 1px solid var(--line);
  box-shadow: 0 12px 40px color-mix(in srgb, var(--text) 12%, transparent);
}

.fm-phone-dial-rings {
  position: absolute;
  left: 50%;
  top: 28%;
  transform: translate(-50%, -50%);
  width: 80px;
  height: 80px;
  pointer-events: none;
}

.fm-phone-dial-rings span {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  border: 2px solid color-mix(in srgb, var(--accent) 35%, transparent);
  animation: fm-dial-ring 1.8s ease-out infinite;
}

.fm-phone-dial-rings span:nth-child(2) {
  animation-delay: 0.6s;
}

@keyframes fm-dial-ring {
  0% {
    transform: scale(0.6);
    opacity: 0.8;
  }
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

.fm-phone-dial-title {
  margin: 12px 0 4px;
  font-size: 1rem;
  font-weight: 600;
}

.fm-phone-dial-status {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.fm-panel-foot {
  flex-shrink: 0;
  flex-grow: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: none;
  background: transparent;
  padding: 6px 12px 4px;
}

.fm-turn-foot {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.fm-turn-input-block {
  padding-bottom: 8px;
}

.fm-asr-viz-zone {
  height: 44px;
  min-height: 44px;
  margin: 0;
  padding: 0;
  border: none;
  border-radius: 0;
  overflow: hidden;
  background: transparent;
  pointer-events: none;
}

.fm-phone-foot-wrap {
  display: block;
  flex: 0 0 96px;
  height: 96px;
  min-height: 96px;
  max-height: 96px;
  overflow: hidden;
  position: relative;
}

.fm-phone-controls-stage {
  position: absolute;
  inset: 0;
  height: 96px;
  min-height: 96px;
  max-height: 96px;
  overflow: hidden;
  contain: strict;
  padding: 0;
  display: block;
}

.fm-phone-controls-fixed {
  position: absolute;
  inset: 0;
  z-index: 4;
  pointer-events: none;
}

.fm-phone-controls-fixed .fm-phone-foot,
.fm-phone-controls-fixed .fm-phone-pause-btn,
.fm-phone-controls-fixed .fm-hangup-btn,
.fm-phone-controls-fixed .fm-phone-dial-btn {
  pointer-events: auto;
}

.fm-phone-controls-fixed .fm-phone-foot {
  position: absolute;
  left: 0;
  right: 0;
  top: 26px;
  height: 44px;
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: none !important;
}

.fm-phone-controls-fixed .fm-phone-foot-actions {
  position: static;
  transform: none !important;
}

.fm-phone-controls-stage .fm-phone-asr-viz-zone {
  position: absolute;
  inset: 0;
  z-index: 0;
  height: 100%;
  min-height: 0;
  max-height: 96px;
  margin: 0;
  overflow: hidden;
}

.fm-phone-controls-stage .fm-phone-foot,
.fm-phone-controls-stage .fm-phone-pause-btn,
.fm-phone-controls-stage .fm-hangup-btn,
.fm-phone-controls-stage .fm-phone-dial-btn {
  pointer-events: auto;
}

.fm-phone-asr-hint {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 2px;
  z-index: 2;
  margin: 0;
  padding: 0 8px;
  font-size: 0.62rem;
  line-height: 1.45;
  color: var(--muted);
  text-align: center;
  min-height: 0;
  max-height: 18px;
  overflow: hidden;
  pointer-events: none;
}

.fm-phone-asr-hint[hidden] {
  display: none !important;
}

.fm-session-end-wrap {
  position: absolute;
  top: 2px;
  left: 2px;
  z-index: 30;
  display: flex;
  padding: 0;
}

.fm-arena.is-session .fm-session-end-wrap {
  top: 0;
  left: 0;
}

.fm-end-study-btn {
  width: 32px;
  height: 32px;
  padding: 0;
  display: grid;
  place-items: center;
  border-radius: 10px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--panel) 88%, rgba(255, 255, 255, 0.65));
  color: var(--muted);
  box-shadow: 0 2px 10px color-mix(in srgb, var(--accent) 8%, rgba(15, 23, 42, 0.1));
  transition: color 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.fm-end-study-btn:hover {
  color: var(--text);
  border-color: color-mix(in srgb, var(--accent) 28%, var(--line));
  background: color-mix(in srgb, var(--panel) 82%, var(--hover-bg));
}

.fm-leave-modal {
  position: fixed;
  inset: 0;
  z-index: 12000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.fm-leave-modal[hidden] {
  display: none !important;
}

.fm-leave-backdrop {
  position: absolute;
  inset: 0;
  background: color-mix(in srgb, var(--text) 18%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.fm-leave-card {
  position: relative;
  width: min(360px, 92vw);
  padding: 18px 16px 14px;
  border-radius: 18px;
  border: 1px solid color-mix(in srgb, var(--accent) 16%, rgba(255, 255, 255, 0.5));
  background: color-mix(in srgb, var(--panel) 72%, rgba(255, 255, 255, 0.22));
  backdrop-filter: blur(28px) saturate(1.4);
  -webkit-backdrop-filter: blur(28px) saturate(1.4);
  box-shadow: 0 20px 60px color-mix(in srgb, var(--accent) 12%, rgba(15, 23, 42, 0.2));
}

.fm-leave-hero {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 14px;
}

.fm-leave-avatar-wrap {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
}

.fm-leave-avatar-wrap .fm-hero-avatar-wrap,
.fm-leave-avatar-wrap img,
.fm-leave-avatar-wrap .tutor-face {
  width: 44px;
  height: 44px;
}

.fm-leave-bubble {
  flex: 1;
  padding: 10px 12px;
  border-radius: 14px 14px 14px 6px;
  background: color-mix(in srgb, var(--accent) 10%, rgba(255, 255, 255, 0.35));
  border: 1px solid color-mix(in srgb, var(--accent) 14%, var(--line));
}

.fm-leave-bubble-text {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--text);
}

.fm-leave-actions {
  display: flex;
  gap: 8px;
  justify-content: stretch;
}

.fm-leave-actions .btn {
  flex: 1;
  font-size: 0.72rem;
  padding: 8px 10px;
}

.fm-asr-viz-zone[hidden] {
  display: none !important;
}

.fm-asr-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.fm-turn-foot .fm-input-row .icon-btn.is-listening {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 18%, rgba(255, 255, 255, 0.22));
  box-shadow: 0 0 0 3px var(--fm-accent-soft);
  color: var(--accent);
}

.fm-turn-foot .fm-asr-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 2px 8px;
  margin: 0;
  border: none;
  background: transparent;
  border-radius: 0;
  min-height: 0;
}

.fm-asr-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--input-bg);
  min-height: 40px;
}

.fm-asr-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--accent) 70%, var(--muted));
  flex-shrink: 0;
}

.feynman-challenge-root.is-phone-live .fm-asr-dot {
  background: #4ade80;
  animation: fm-asr-dot-pulse 1.2s ease-in-out infinite;
}

@keyframes fm-asr-dot-pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.35;
  }
}

.fm-asr-label {
  flex: 1;
  font-size: 0.78rem;
  color: var(--muted);
  min-width: 0;
}

.fm-asr-wave {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 22px;
  flex-shrink: 0;
}

.fm-asr-wave[hidden] {
  display: none !important;
}

.fm-asr-wave span {
  width: 3px;
  height: 6px;
  border-radius: 2px;
  background: var(--accent);
  opacity: 0.35;
  animation: fm-eq-idle 1.2s ease-in-out infinite;
}

.fm-asr-wave.is-speaking span {
  opacity: 0.85;
  animation: fm-eq-speak 0.45s ease-in-out infinite alternate;
}

.fm-asr-wave span:nth-child(2) { animation-delay: 0.08s; }
.fm-asr-wave span:nth-child(3) { animation-delay: 0.16s; }
.fm-asr-wave span:nth-child(4) { animation-delay: 0.24s; }
.fm-asr-wave span:nth-child(5) { animation-delay: 0.32s; }

.fm-phone-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px;
  border-radius: 14px;
  border: none;
  background: transparent;
}

.fm-phone-foot-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.fm-phone-foot-center {
  flex-direction: row;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 10px;
  flex-wrap: nowrap;
}

.fm-phone-foot-actions.fm-phone-foot-center {
  min-height: 44px;
}

.fm-phone-dial-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  width: 100%;
  max-width: 280px;
  padding: 16px 28px;
  border-radius: 16px;
  border: 1px solid color-mix(in srgb, #6ee7b7 42%, rgba(255, 255, 255, 0.55));
  background: linear-gradient(
    145deg,
    color-mix(in srgb, #a7f3d0 38%, rgba(255, 255, 255, 0.28)),
    color-mix(in srgb, #6ee7b7 22%, rgba(255, 255, 255, 0.12))
  ) !important;
  backdrop-filter: blur(14px) saturate(1.35);
  -webkit-backdrop-filter: blur(14px) saturate(1.35);
  color: color-mix(in srgb, #047857 88%, var(--text)) !important;
  font-size: 1.05rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow:
    0 4px 22px color-mix(in srgb, #34d399 16%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
  transition: filter 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}

.fm-phone-dial-btn.is-call-cta {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  border: 1px solid color-mix(in srgb, #fff 35%, transparent) !important;
  color: #fff !important;
  text-shadow: 0 1px 8px color-mix(in srgb, #4c1d95 55%, transparent);
  background: linear-gradient(
    125deg,
    #6366f1,
    #a855f7,
    #ec4899,
    #22d3ee,
    #818cf8,
    #6366f1
  ) !important;
  background-size: 320% 320%;
  animation: fm-call-gradient 5s ease infinite;
  box-shadow:
    0 6px 28px color-mix(in srgb, #a855f7 42%, transparent),
    0 0 20px color-mix(in srgb, #22d3ee 22%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.35);
}

.fm-phone-dial-btn.is-call-cta::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(
    105deg,
    transparent 38%,
    rgba(255, 255, 255, 0.42) 50%,
    transparent 62%
  );
  background-size: 220% 100%;
  animation: fm-call-shine 2.8s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

.fm-phone-dial-btn.is-call-cta > * {
  position: relative;
  z-index: 1;
}

@keyframes fm-call-gradient {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

@keyframes fm-call-shine {
  0%,
  100% {
    background-position: 200% 0;
    opacity: 0.35;
  }
  50% {
    background-position: -20% 0;
    opacity: 0.85;
  }
}

.fm-phone-dial-btn.is-call-cta:hover {
  filter: brightness(1.08) saturate(1.12);
  transform: translateY(-2px);
  box-shadow:
    0 10px 34px color-mix(in srgb, #a855f7 48%, transparent),
    0 0 28px color-mix(in srgb, #22d3ee 30%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
}

.fm-phone-dial-btn:hover {
  filter: brightness(1.04);
  transform: translateY(-1px);
  box-shadow:
    0 6px 26px color-mix(in srgb, #34d399 22%, transparent),
    inset 0 1px 0 rgba(255, 255, 255, 0.5);
}

.fm-phone-pause-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 18px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--accent) 28%, var(--line));
  background: color-mix(in srgb, var(--accent) 10%, var(--glass-bg-card, rgba(255, 255, 255, 0.22)));
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 600;
  cursor: pointer;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transform: none !important;
}

.fm-phone-pause-btn:hover {
  transform: none !important;
}

.fm-hangup-btn {
  transform: none !important;
}

.fm-hangup-btn:hover {
  transform: none !important;
}

.fm-phone-pause-btn.is-paused,
.fm-phone-pause-btn:hover {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: color-mix(in srgb, var(--accent) 16%, var(--glass-bg-card));
}

.fm-phone-pause-btn[hidden],
.fm-hangup-btn[hidden],
#fm-turn-foot[hidden],
#fm-phone-foot[hidden],
.fm-panel-foot [hidden] {
  display: none !important;
}

.fm-turn-foot {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.fm-phone-foot-wrap {
  display: block;
}

.sound-panel-voice-list {
  max-height: 168px;
  overflow: auto;
  margin-bottom: 4px;
}

.app.is-feynman-focus .chat-voice-btn {
  display: none !important;
}

.fm-hangup-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border: none;
  border-radius: 999px;
  background: #ef4444 !important;
  color: #fff !important;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 16px color-mix(in srgb, #ef4444 45%, transparent);
}

.fm-hangup-btn:hover {
  filter: brightness(1.06);
}

.fm-panel-foot .fm-dock {
  flex-shrink: 0;
}

.fm-turn-stats {
  display: flex;
  justify-content: flex-start;
  gap: 10px;
  margin-top: 0;
  padding-top: 2px;
  font-size: 0.68rem;
  color: var(--muted);
  flex-shrink: 0;
}

.fm-turn-stats em {
  font-style: normal;
  font-weight: 700;
}

.fm-turn-stats .is-good { color: #4ade80; }
.fm-turn-stats .is-ok { color: #fbbf24; }
.fm-turn-stats .is-bad { color: #f87171; }

@media (max-width: 860px) {
  .fm-panel-layout {
    grid-template-columns: 1fr;
  }

  .fm-v-progress {
    padding-left: 16px;
  }

  .fm-panel-mode-seg {
    flex-wrap: wrap;
  }
}