.sel-main {
  max-width: 52rem;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

.orient-box {
  margin: 0 0 1.25rem;
  padding: 1rem 1.1rem 0.85rem;
  border-radius: 0.65rem;
  border: 1px solid var(--line);
  background: #fff;
  box-shadow: var(--shadow);
}

.orient-box__title {
  margin: 0 0 0.75rem;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}

.orient-box__grid {
  display: grid;
  gap: 0.75rem 1.25rem;
}

@media (min-width: 40rem) {
  .orient-box__grid {
    grid-template-columns: 1fr 1fr;
  }
}

.orient-box__block {
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
}

.orient-box__block--full {
  grid-column: 1 / -1;
}

.orient-box__block h3 {
  margin: 0 0 0.35rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
}

.orient-box__block ul {
  margin: 0;
  padding-left: 1.1rem;
}

.orient-box__block li {
  margin-bottom: 0.25rem;
}

.orient-box__block p {
  margin: 0;
}

.sel-intro {
  margin-bottom: 1.75rem;
}

.reading-range-note {
  margin: 0.65rem 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}

.extra-practice {
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.extra-practice__head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.65rem;
  margin-bottom: 0.35rem;
}

.extra-practice__title {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.05rem;
  font-weight: 700;
}

.extra-practice__hint {
  margin: 0 0 0.85rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.btn-new-examples {
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  border-radius: 0.4rem;
  border: none;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
}

.btn-new-examples:hover {
  opacity: 0.92;
}

.sel-intro__meta {
  margin: 1rem 0 0;
  padding: 0.85rem 1rem;
  border-radius: 0.5rem;
  background: #fff;
  border: 1px solid var(--line);
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.5;
}

.sel-intro__meta strong {
  color: var(--ink);
}

.sel-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1.25rem;
  padding: 0.2rem;
  border-radius: 0.65rem;
  background: rgba(20, 33, 61, 0.06);
}

.sel-tab {
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 0.85rem;
  border: none;
  border-radius: 0.45rem;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.sel-tab:hover {
  color: var(--ink);
}

.sel-tab[aria-selected="true"] {
  background: #fff;
  color: var(--accent);
  box-shadow: var(--shadow);
}

.sel-panel {
  display: none;
}

.sel-panel.is-active {
  display: block;
}

.sel-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1rem;
}

.sel-toolbar label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
}

.sel-toolbar select {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 0.4rem 0.6rem;
  border-radius: 0.4rem;
  border: 1px solid var(--line);
  min-width: 14rem;
}

.reading-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem 1rem;
  margin-bottom: 0.75rem;
}

.reading-head h2 {
  margin: 0;
  font-family: "Fraunces", Georgia, serif;
  font-size: 1.2rem;
}

.word-badge {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.25rem 0.55rem;
  border-radius: 0.35rem;
  background: var(--accent-soft);
  color: var(--ink);
}

.word-badge--ok {
  background: rgba(42, 157, 92, 0.15);
  color: #1f7a45;
}

.word-badge--warn {
  background: rgba(201, 76, 76, 0.12);
  color: #a02828;
}

.reading-source {
  margin: 0 0 0.75rem;
  font-size: 0.78rem;
  color: var(--muted);
}

.writing-grid {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 40rem) {
  .writing-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.writing-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  padding: 1rem;
  box-shadow: var(--shadow);
}

.writing-card h3 {
  margin: 0 0 0.35rem;
  font-size: 0.95rem;
  font-family: "Fraunces", Georgia, serif;
}

.writing-card .topic {
  margin: 0 0 0.65rem;
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.45;
}

.writing-card textarea {
  width: 100%;
  min-height: 10rem;
  font-family: inherit;
  font-size: 0.9rem;
  line-height: 1.5;
  padding: 0.55rem 0.65rem;
  border-radius: 0.4rem;
  border: 1px solid var(--line);
  resize: vertical;
}

.writing-card .wc-line {
  margin: 0.45rem 0 0;
  font-size: 0.82rem;
  font-weight: 600;
}

.wc-line--ok {
  color: #1f7a45;
}

.wc-line--mid {
  color: #a65d1a;
}

.wc-line--bad {
  color: #b03030;
}

.writing-card__actions {
  margin-top: 0.65rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.writing-card__actions .btn-check:disabled {
  opacity: 0.65;
  cursor: wait;
}

.writing-feedback {
  margin-top: 0.85rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--ink);
}

.writing-feedback__loading,
.writing-feedback__err {
  margin: 0;
  color: var(--muted);
}

.writing-feedback__err {
  color: #b03030;
}

.writing-feedback__block {
  margin-bottom: 0.85rem;
  padding: 0.65rem 0.75rem;
  border-radius: 0.45rem;
  background: #fafafa;
  border: 1px solid var(--line);
}

.writing-feedback__block--warn {
  background: #fff8f0;
  border-color: #e8c9a8;
}

.writing-feedback__block--muted {
  background: #f6f7f9;
  font-size: 0.82rem;
  color: var(--muted);
}

.writing-feedback__h {
  margin: 0 0 0.4rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--accent);
}

.writing-feedback__meta {
  margin: 0.35rem 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

.writing-feedback__penalty {
  margin: 0.5rem 0 0;
  font-weight: 600;
  color: #a65d1a;
}

.writing-feedback__list {
  margin: 0.35rem 0 0;
  padding-left: 1.15rem;
}

.writing-feedback__list li {
  margin-bottom: 0.45rem;
}

.writing-feedback__issue {
  font-weight: 600;
}

.writing-feedback__tip {
  color: var(--muted);
  font-size: 0.9em;
}

.writing-feedback__rep {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.88em;
  color: var(--muted);
}

.writing-feedback__code {
  display: block;
  margin-top: 0.25rem;
  padding: 0.35rem 0.45rem;
  font-size: 0.78rem;
  font-family: ui-monospace, monospace;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.3rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.writing-rubric {
  margin: 0 0 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: 0.5rem;
  border: 1px solid var(--line);
  background: #fff;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
}

.writing-rubric summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink);
}

.writing-rubric__src,
.writing-rubric__rel {
  margin: 0.5rem 0 0;
}

.writing-rubric__band {
  margin-top: 0.75rem;
}

.writing-rubric__band h4 {
  margin: 0 0 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--ink);
}

.writing-rubric__band ul {
  margin: 0;
  padding-left: 1.1rem;
}

.writing-rubric__band li {
  margin-bottom: 0.35rem;
}

/* Exercise blocks (reading, Use of English, etc.) */
.reading-passage {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.75rem;
  padding: 1.1rem 1.15rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--ink);
  box-shadow: var(--shadow);
}

.reading-passage h3 {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.reading-passage p {
  margin: 0;
}

.ex-block-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 1.5rem 0 0.75rem;
}

.ex-item {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  padding: 0.85rem 1rem;
  margin-bottom: 0.65rem;
}

.ex-item__row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 0.65rem 0.75rem;
}

.ex-item__label {
  flex: 0 0 auto;
  font-weight: 700;
  color: var(--accent);
  min-width: 1.75rem;
}

.ex-item__body {
  flex: 1 1 12rem;
  min-width: 0;
}

.ex-prompt p {
  margin: 0 0 0.65rem;
}

.ex-prompt p:last-child {
  margin-bottom: 0;
}

.ex-pick {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin: 0.65rem 0 0.5rem;
}

.ex-pick--tf {
  flex-direction: row;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.ex-choice {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  padding: 0.45rem 0.55rem;
  border-radius: 0.4rem;
  border: 1px solid var(--line);
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1.4;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.ex-choice:focus-within {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.ex-choice input {
  margin-top: 0.2rem;
  flex-shrink: 0;
}

.ex-choice__text {
  flex: 1;
  min-width: 0;
}

.ex-choice--ok {
  border-color: #2a9d5c;
  background: rgba(42, 157, 92, 0.1);
}

.ex-choice--bad {
  border-color: #c94c4c;
  background: rgba(201, 76, 76, 0.08);
}

.ex-choice--miss {
  opacity: 0.55;
}

.ex-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
  margin-top: 0.35rem;
}

.btn-check {
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.85rem;
  border-radius: 0.4rem;
  border: none;
  background: var(--ink);
  color: #fff;
  cursor: pointer;
}

.btn-check:hover {
  opacity: 0.92;
}

.ex-feedback {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.ex-feedback--ok {
  color: #1f7a45;
}

.ex-feedback--bad {
  color: #b03030;
}

.ex-feedback--warn {
  color: #a65d1a;
}

.ex-open-input {
  display: block;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  margin: 0.65rem 0 0.5rem;
  padding: 0.55rem 0.65rem;
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 0.45rem;
  background: #fff;
  resize: vertical;
  min-height: 4.5rem;
}

.ex-open-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-color: var(--accent);
}

.btn-solucion {
  flex: 0 0 auto;
  align-self: flex-start;
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.4rem 0.75rem;
  border-radius: 0.4rem;
  border: 1px solid var(--accent);
  background: #fff;
  color: var(--accent);
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease;
}

.btn-solucion:hover {
  background: var(--accent-soft);
}

.btn-solucion[aria-expanded="true"] {
  background: var(--accent);
  color: #fff;
}

.ex-item__solution {
  display: none;
  margin-top: 0.85rem;
  padding: 0.75rem 0.85rem;
  border-radius: 0.45rem;
  background: var(--accent-soft);
  border: 1px solid rgba(231, 111, 81, 0.25);
  font-size: 0.95rem;
  line-height: 1.5;
}

.ex-item__solution.is-visible {
  display: block;
}

.ex-item__solution strong {
  color: var(--ink);
}

@media (max-width: 36rem) {
  .ex-item__row {
    flex-direction: column;
  }

  .btn-solucion {
    width: 100%;
  }
}