feat: add taro student learning flow

apps/taro/src/pages/student/student.css

@@ -0,0 +1,213 @@
+.student-page {
+  min-height: 100vh;
+  padding: 28px;
+  background: #f6f8fb;
+}
+
+.student-topbar {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 18px;
+  margin-bottom: 28px;
+}
+
+.student-title-block {
+  min-width: 0;
+}
+
+.student-kicker {
+  display: block;
+  color: #64748b;
+  font-size: 22px;
+  font-weight: 600;
+}
+
+.student-title {
+  display: block;
+  margin-top: 6px;
+  color: #111827;
+  font-size: 38px;
+  font-weight: 800;
+  line-height: 1.2;
+}
+
+.student-subtitle {
+  display: block;
+  margin-top: 8px;
+  color: #64748b;
+  font-size: 24px;
+  line-height: 1.45;
+}
+
+.toolbar {
+  display: flex;
+  gap: 12px;
+  overflow-x: auto;
+  padding-bottom: 8px;
+}
+
+.pill-button,
+.primary-button,
+.secondary-button,
+.danger-button {
+  min-width: 120px;
+  height: 64px;
+  border-radius: 8px;
+  font-size: 24px;
+  font-weight: 700;
+  line-height: 64px;
+}
+
+.primary-button {
+  border: 0;
+  background: #2563eb;
+  color: #fff;
+}
+
+.secondary-button,
+.pill-button {
+  border: 1px solid #cbd5e1;
+  background: #fff;
+  color: #1e3a8a;
+}
+
+.danger-button {
+  border: 1px solid #fecaca;
+  background: #fff1f2;
+  color: #be123c;
+}
+
+.pill-button.active {
+  border-color: #2563eb;
+  background: #eff6ff;
+  color: #1d4ed8;
+}
+
+.section-block {
+  margin-top: 30px;
+}
+
+.section-heading {
+  display: block;
+  margin-bottom: 16px;
+  color: #172033;
+  font-size: 30px;
+  font-weight: 800;
+}
+
+.quiet-panel {
+  padding: 26px;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  background: #fff;
+}
+
+.list-stack {
+  display: flex;
+  flex-direction: column;
+  gap: 14px;
+}
+
+.list-row {
+  padding: 22px;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  background: #fff;
+}
+
+.row-main {
+  display: block;
+  color: #111827;
+  font-size: 28px;
+  font-weight: 750;
+  line-height: 1.35;
+}
+
+.row-meta {
+  display: block;
+  margin-top: 8px;
+  color: #64748b;
+  font-size: 22px;
+  line-height: 1.45;
+}
+
+.grid-two {
+  display: grid;
+  grid-template-columns: repeat(2, minmax(0, 1fr));
+  gap: 16px;
+}
+
+.metric {
+  padding: 22px;
+  border: 1px solid #e2e8f0;
+  border-radius: 8px;
+  background: #fff;
+}
+
+.metric-value {
+  display: block;
+  color: #0f172a;
+  font-size: 34px;
+  font-weight: 800;
+}
+
+.metric-label {
+  display: block;
+  margin-top: 8px;
+  color: #64748b;
+  font-size: 22px;
+}
+
+.empty-state {
+  padding: 38px 26px;
+  border: 1px dashed #cbd5e1;
+  border-radius: 8px;
+  background: #fff;
+  color: #64748b;
+  font-size: 24px;
+  line-height: 1.5;
+}
+
+.input {
+  width: 100%;
+  height: 72px;
+  padding: 0 20px;
+  border: 1px solid #cbd5e1;
+  border-radius: 8px;
+  background: #fff;
+  color: #111827;
+  font-size: 26px;
+}
+
+.textarea {
+  width: 100%;
+  min-height: 140px;
+  padding: 18px 20px;
+  border: 1px solid #cbd5e1;
+  border-radius: 8px;
+  background: #fff;
+  color: #111827;
+  font-size: 26px;
+  line-height: 1.45;
+}
+
+.error-text {
+  display: block;
+  margin-top: 14px;
+  color: #be123c;
+  font-size: 22px;
+  line-height: 1.4;
+}
+
+.success-text {
+  display: block;
+  margin-top: 14px;
+  color: #047857;
+  font-size: 22px;
+  line-height: 1.4;
+}
+
+.muted-text {
+  color: #64748b;
+}