:root {
  --bg: #f6f7fb;
  --card: #ffffff;
  --text: #1d2433;
  --muted: #667085;
  --line: #e6e9f2;
  --primary: #3554d1;
  --primary-soft: #edf0ff;
  --good: #0f8a5f;
  --good-soft: #e8f6ef;
  --warn: #b45f06;
  --warn-soft: #fff3df;
  --bad: #b42318;
  --bad-soft: #fff1f0;
  --shadow: 0 14px 40px rgba(20, 35, 90, 0.08);
  --radius: 18px;
  --radius-sm: 12px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: linear-gradient(180deg, #eef2ff 0%, var(--bg) 280px);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.55;
}
button, input, textarea, select { font: inherit; }
button { cursor: pointer; }
a { color: var(--primary); }

.app-shell {
  max-width: 1160px;
  margin: 0 auto;
  padding: 18px 18px 64px;
}

.topbar {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  background: var(--primary);
  color: white;
  font-size: 24px;
  box-shadow: var(--shadow);
}
.brand h1 {
  font-size: 22px;
  margin: 0;
  line-height: 1.1;
}
.brand .sub { color: var(--muted); font-size: 13px; margin-top: 2px; }

.nav {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav button,
.tab-btn {
  border: 1px solid var(--line);
  background: rgba(255,255,255,.82);
  color: var(--text);
  padding: 9px 12px;
  border-radius: 999px;
  transition: .16s ease;
}
.nav button.active,
.tab-btn.active {
  color: var(--primary);
  background: var(--primary-soft);
  border-color: #cfd7ff;
  font-weight: 650;
}
.nav button:hover, .tab-btn:hover { transform: translateY(-1px); }

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-12 { grid-column: span 12; }

.card {
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(225,230,242,.85);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px;
}
.card.tight { padding: 14px; }
.card h2, .card h3 {
  margin: 0 0 12px;
  line-height: 1.25;
}
.card h2 { font-size: 20px; }
.card h3 { font-size: 17px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.big { font-size: 24px; font-weight: 750; }

.hero {
  padding: 22px;
  background: radial-gradient(circle at 5% 0%, #ffffff 0, #ffffff 24%, #f3f5ff 65%, #eef2ff 100%);
}
.hero-title {
  font-size: 30px;
  margin: 0 0 8px;
  letter-spacing: -0.03em;
}
.hero p { margin: 0 0 16px; color: var(--muted); }

.kid-shell {
  width: min(760px, 100%);
  margin: 0 auto;
  min-height: calc(100vh - 48px);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 16px;
}
.kid-card,
.kid-objection {
  background: rgba(255,255,255,.96);
  border: 1px solid rgba(225,230,242,.9);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px;
}
.kid-date {
  color: var(--muted);
  font-size: 18px;
  font-weight: 700;
}
.kid-title {
  margin: 4px 0 8px;
  font-size: 42px;
  line-height: 1.12;
}
.kid-step {
  display: inline-flex;
  border-radius: 999px;
  padding: 7px 12px;
  background: var(--primary-soft);
  color: var(--primary);
  font-weight: 800;
}
.kid-progress { margin: 18px 0; }
.kid-task {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #fff;
  padding: 20px;
}
.kid-task.done {
  background: var(--good-soft);
  border-color: #c8ebd8;
}
.kid-label {
  color: var(--muted);
  font-size: 16px;
  font-weight: 800;
}
.kid-task-title {
  margin: 4px 0 8px;
  font-size: 34px;
  line-height: 1.18;
}
.kid-time {
  font-size: 22px;
  font-weight: 850;
  color: var(--primary);
}
.kid-detail {
  margin: 12px 0 0;
  font-size: 20px;
  color: var(--text);
}
.kid-workspace {
  margin-top: 16px;
  border: 1px solid #d8ddff;
  border-radius: 18px;
  background: #fbfcff;
  padding: 18px;
}
.kid-workspace h3 {
  margin: 0 0 8px;
  font-size: 23px;
}
.kid-workspace p {
  margin: 0 0 12px;
  font-size: 18px;
}
.kid-save {
  margin-top: 12px;
  min-height: 52px;
  font-size: 18px;
}
.subject-checks {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin: 14px 0;
}
.subject-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  padding: 13px;
  font-size: 18px;
  font-weight: 800;
}
.subject-chip input { width: 20px; height: 20px; }
.kid-subject-panels { display: grid; gap: 12px; }
.kid-subject-panel {
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  padding: 14px;
}
.kid-subject-panel h4 {
  margin: 0 0 10px;
  font-size: 19px;
}
.kid-mini-list {
  display: grid;
  gap: 10px;
}
.kid-mini-item {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fff;
  padding: 12px;
}
.kid-mini-item strong,
.kid-mini-item span {
  display: block;
}
.kid-mini-item span {
  margin-top: 4px;
  color: var(--muted);
}
.kid-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 18px;
}
.kid-primary,
.kid-secondary {
  min-height: 64px;
  font-size: 22px;
  border-radius: 16px;
}
.kid-objection h2 {
  margin: 0 0 12px;
  font-size: 24px;
}
.kid-objection textarea {
  min-height: 108px;
  font-size: 18px;
}
.objection-actions .btn {
  min-height: 48px;
  font-size: 17px;
}
.objection-actions .btn.listening {
  background: var(--warn-soft);
  color: var(--warn);
  border-color: #ffe0ad;
}
.voice-listening-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 2px solid #ffe0ad;
  border-radius: 18px;
  background: var(--warn-soft);
  color: #7a3f00;
  padding: 16px;
  margin-bottom: 12px;
}
.voice-listening-banner strong,
.voice-listening-banner span {
  display: block;
}
.voice-listening-banner strong {
  font-size: 22px;
}
.voice-pulse {
  width: 18px;
  height: 18px;
  border-radius: 999px;
  background: var(--warn);
  box-shadow: 0 0 0 8px rgba(180, 95, 6, .14);
  animation: voicePulse 1.2s ease-in-out infinite;
  flex: 0 0 auto;
}
@keyframes voicePulse {
  0%, 100% { transform: scale(.9); opacity: .7; }
  50% { transform: scale(1.12); opacity: 1; }
}
.voice-status {
  min-height: 22px;
  margin-top: 8px;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: 15px;
  background: #fff;
  color: var(--muted);
  font-size: 16px;
  padding: 10px 12px;
}
.voice-status:empty {
  display: none;
}
.voice-status.good { color: var(--good); border-color: #bce8d3; background: var(--good-soft); }
.voice-status.bad { color: var(--bad); border-color: #ffc8c4; background: var(--bad-soft); }

.btn {
  border: none;
  background: var(--primary);
  color: #fff;
  border-radius: 13px;
  padding: 11px 14px;
  font-weight: 700;
  box-shadow: 0 10px 22px rgba(53,84,209,.20);
}
.btn.secondary {
  background: #fff;
  color: var(--text);
  border: 1px solid var(--line);
  box-shadow: none;
}
.btn.good { background: var(--good); }
.btn.warn { background: var(--warn); }
.btn.bad { background: var(--bad); }
.btn.ghost {
  background: transparent;
  color: var(--primary);
  border: 1px solid #cfd7ff;
  box-shadow: none;
}
.btn:disabled { opacity: .45; cursor: not-allowed; box-shadow: none; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border-radius: 999px;
  padding: 5px 9px;
  font-size: 12px;
  font-weight: 650;
  background: var(--primary-soft);
  color: var(--primary);
  border: 1px solid #d8ddff;
}
.pill.good { background: var(--good-soft); color: var(--good); border-color: #bce8d3; }
.pill.warn { background: var(--warn-soft); color: var(--warn); border-color: #ffe0ad; }
.pill.bad { background: var(--bad-soft); color: var(--bad); border-color: #ffc8c4; }
.pill.gray { background: #f3f4f6; color: var(--muted); border-color: #e5e7eb; }

.progress-wrap { margin: 14px 0; }
.progress-row { display: flex; justify-content: space-between; gap: 10px; font-size: 13px; color: var(--muted); margin-bottom: 7px; }
.progress {
  height: 11px;
  background: #eef0f6;
  border-radius: 999px;
  overflow: hidden;
}
.progress > div {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--primary), #7186ff);
  border-radius: inherit;
}

.task-list { display: flex; flex-direction: column; gap: 10px; }
.task {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  border: 1px solid var(--line);
  border-radius: 15px;
  padding: 12px;
  background: #fff;
}
.task.done { background: var(--good-soft); border-color: #c8ebd8; }
.task.active { border-color: #aab7ff; background: #fbfcff; }
.task .title { font-weight: 750; }
.task .meta { color: var(--muted); font-size: 13px; margin-top: 3px; }
.task-actions { display: flex; gap: 8px; flex-shrink: 0; }

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; }
.field label { font-size: 13px; color: var(--muted); font-weight: 650; }
input[type="text"], input[type="number"], input[type="time"], input[type="password"], textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  padding: 10px 11px;
  color: var(--text);
  outline: none;
}
textarea { min-height: 86px; resize: vertical; }
input:focus, textarea:focus, select:focus { border-color: #aab7ff; box-shadow: 0 0 0 4px rgba(53,84,209,.08); }

.table-wrap { overflow: auto; border: 1px solid var(--line); border-radius: 14px; }
table { width: 100%; border-collapse: collapse; min-width: 680px; background: #fff; }
th, td { padding: 10px 11px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { font-size: 12px; color: var(--muted); background: #fafbff; }
tr:last-child td { border-bottom: none; }

.notice {
  border-radius: 15px;
  padding: 12px 13px;
  background: var(--primary-soft);
  border: 1px solid #d8ddff;
  color: #243a9b;
}
.notice.good { background: var(--good-soft); border-color: #c8ebd8; color: var(--good); }
.notice.warn { background: var(--warn-soft); border-color: #ffe0ad; color: #8a4b00; }
.notice.bad { background: var(--bad-soft); border-color: #ffc8c4; color: var(--bad); }
.notice + .notice { margin-top: 10px; }

.stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}
.stat {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 15px;
  padding: 13px;
}
.stat .num { font-size: 24px; font-weight: 800; }
.stat .label { font-size: 13px; color: var(--muted); }

.schedule { display: flex; flex-direction: column; gap: 10px; }
.schedule-item {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 10px;
  padding: 12px;
  border-radius: 15px;
  border: 1px solid var(--line);
  background: #fff;
}
.schedule-item .time { font-weight: 800; color: var(--primary); }

.chat-box {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 360px;
  overflow: auto;
  padding-right: 4px;
}
.bubble {
  border-radius: 16px;
  padding: 11px 12px;
  max-width: 92%;
  border: 1px solid var(--line);
  background: #fff;
}
.bubble.child { align-self: flex-end; background: #f7f8ff; border-color: #d8ddff; }
.bubble.system { align-self: flex-start; background: #fff; }

.image-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 10px; }
.thumb { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: #fff; }
.thumb img { width: 100%; height: 120px; object-fit: cover; display: block; }
.thumb .caption { padding: 7px; font-size: 12px; color: var(--muted); }

.footer-note { margin-top: 18px; color: var(--muted); font-size: 12px; text-align: center; }

@media (max-width: 860px) {
  .topbar { align-items: flex-start; flex-direction: column; }
  .nav { justify-content: flex-start; }
  .grid { grid-template-columns: 1fr; }
  .col-4, .col-5, .col-6, .col-7, .col-8, .col-12 { grid-column: 1; }
  .form-grid { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .hero-title { font-size: 25px; }
  .kid-shell {
    min-height: auto;
    justify-content: flex-start;
  }
  .kid-card,
  .kid-objection {
    padding: 20px;
  }
  .kid-title { font-size: 34px; }
  .kid-task-title { font-size: 28px; }
  .kid-detail { font-size: 18px; }
  .subject-checks { grid-template-columns: 1fr; }
  .task { flex-direction: column; }
  .task-actions { width: 100%; }
  .task-actions .btn { flex: 1; }
  .schedule-item { grid-template-columns: 1fr; }
  .image-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 520px) {
  .app-shell { padding: 12px 12px 54px; }
  .brand h1 { font-size: 19px; }
  .nav button { padding: 8px 10px; font-size: 13px; }
  .card { padding: 14px; }
  .kid-card,
  .kid-objection {
    padding: 18px;
  }
  .kid-title { font-size: 30px; }
  .kid-task-title { font-size: 24px; }
  .kid-time { font-size: 20px; }
  .kid-actions { grid-template-columns: 1fr; }
  .kid-primary,
  .kid-secondary {
    min-height: 58px;
    font-size: 20px;
  }
  .stats { grid-template-columns: 1fr; }
  .image-grid { grid-template-columns: 1fr; }
}