.writing-course {
  --wc-teal: #16776c;
  --wc-teal-dark: #105e55;
  --wc-ink: #213b39;
  --wc-muted: #5b706c;
  --wc-line: #dce7e3;
  --wc-tint: #eef6f3;
  --wc-paper: #ffffff;
  color: var(--wc-ink);
  font: 15px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
  min-width: 0;
  width: 100%;
}
.writing-course *, .writing-course *::before, .writing-course *::after { box-sizing: border-box; }
.writing-course h2, .writing-course h3, .writing-course h4, .writing-course h5, .writing-course p { margin: 0; }
.writing-course button, .writing-course input, .writing-course textarea { font: inherit; }
.writing-course button { cursor: pointer; }
.writing-course button:disabled { cursor: default; opacity: .55; }
.writing-course button, .writing-course textarea, .writing-course summary, .writing-course label { -webkit-tap-highlight-color: transparent; }
.writing-course :focus-visible { outline: 3px solid #e5a944; outline-offset: 3px; }
.writing-course input { accent-color: var(--wc-teal); }
.writing-course p, .writing-course li, .writing-course label, .writing-course button { overflow-wrap: anywhere; }
.writing-course .wc-muted { color: var(--wc-muted); font-size: 13px; }
.writing-course .wc-eyebrow { color: var(--wc-teal); font-size: 12px; font-weight: 700; letter-spacing: .07em; }
.writing-course .wc-label { color: var(--wc-muted); font-size: 12px; font-weight: 650; }
.writing-course .wc-header { display: grid; grid-template-columns: minmax(0, 1fr) 205px; gap: 36px; align-items: center; background: var(--wc-paper); border: 1px solid var(--wc-line); border-radius: 18px; padding: 30px 32px; }
.writing-course .wc-intro h2 { margin: 7px 0 9px; font-size: clamp(25px, 2.6vw, 35px); line-height: 1.4; letter-spacing: -.035em; }
.writing-course .wc-intro > p:not(.wc-eyebrow) { max-width: 39em; color: var(--wc-muted); font-size: 14px; }
.writing-course .wc-learning-path { display: flex; list-style: none; padding: 0; margin: 24px 0 0; gap: 22px; }
.writing-course .wc-learning-path li { position: relative; padding-top: 10px; border-top: 2px solid #adcec3; flex: 1; max-width: 145px; }
.writing-course .wc-learning-path li:not(:last-child)::after { content: '→'; position: absolute; right: -18px; top: 10px; color: var(--wc-teal); }
.writing-course .wc-learning-path span { font-weight: 700; font-size: 14px; }
.writing-course .wc-learning-path small { display: block; color: var(--wc-muted); font-size: 11px; margin-top: 3px; }
.writing-course .wc-progress-summary { border-left: 1px solid var(--wc-line); padding-left: 26px; }
.writing-course .wc-progress-number { line-height: 1.2; margin: 9px 0 13px; }
.writing-course .wc-progress-number strong { font: 44px/1 Georgia, "Times New Roman", serif; color: var(--wc-teal); }
.writing-course .wc-progress-number span { font-size: 13px; color: var(--wc-muted); }
.writing-course progress { display: block; appearance: none; border: 0; border-radius: 8px; overflow: hidden; width: 100%; height: 6px; background: var(--wc-tint); margin-bottom: 10px; }
.writing-course progress::-webkit-progress-bar { background: var(--wc-tint); }
.writing-course progress::-webkit-progress-value { background: var(--wc-teal); border-radius: 8px; }
.writing-course progress::-moz-progress-bar { background: var(--wc-teal); border-radius: 8px; }
.writing-course .wc-button { border: 1px solid #b6cec6; border-radius: 8px; background: var(--wc-paper); color: var(--wc-teal-dark); padding: 9px 14px; font-size: 13px; font-weight: 600; line-height: 1.5; min-height: 40px; }
.writing-course .wc-button:hover:not(:disabled) { background: var(--wc-tint); }
.writing-course .wc-button-primary { color: white; background: var(--wc-teal); border-color: var(--wc-teal); }
.writing-course .wc-button-primary:hover:not(:disabled) { background: var(--wc-teal-dark); }
.writing-course .wc-button-small { padding: 6px 12px; min-height: 34px; }
.writing-course .wc-button-quiet { border-color: var(--wc-line); color: var(--wc-muted); }
.writing-course .wc-progress-summary .wc-button { margin-top: 16px; width: 100%; }
.writing-course .wc-save-note { margin: 11px 2px 3px; color: var(--wc-muted); font-size: 12px; }
.writing-course .wc-source-note { margin: 0 2px 24px; color: var(--wc-muted); font-size: 11px; }
.writing-course .wc-body { display: grid; grid-template-columns: 240px minmax(0, 1fr); align-items: start; gap: 24px; }
.writing-course .wc-sidebar { position: sticky; top: 16px; }
.writing-course .wc-sidebar-heading { margin: 0 8px 15px; }
.writing-course .wc-sidebar-heading h3 { font-size: 16px; }
.writing-course .wc-sidebar-heading > span { display: block; margin-top: 2px; font-size: 11px; color: var(--wc-muted); }
.writing-course .wc-course-list { padding: 0; margin: 0; list-style: none; display: grid; gap: 5px; }
.writing-course .wc-course-link { display: flex; gap: 11px; align-items: flex-start; width: 100%; padding: 11px 10px; border: 1px solid transparent; background: transparent; border-radius: 10px; text-align: left; color: var(--wc-ink); }
.writing-course .wc-course-link:hover { background: #f3f7f5; }
.writing-course .wc-course-link.is-active { border-color: #bdd6cd; background: #e8f3ee; }
.writing-course .wc-course-number { flex: 0 0 22px; padding-top: 1px; color: var(--wc-teal); font: 19px/1.35 Georgia, serif; white-space: nowrap; }
.writing-course .wc-course-description { min-width: 0; }
.writing-course .wc-course-description strong { display: block; font-weight: 650; font-size: 13px; line-height: 1.55; }
.writing-course .wc-course-description small { display: block; margin-top: 3px; color: var(--wc-muted); font-size: 11px; }
.writing-course .wc-review-button { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 6px; background: white; border: 1px solid var(--wc-line); border-radius: 10px; width: 100%; margin-top: 16px; padding: 12px; color: var(--wc-ink); font-size: 13px; text-align: left; }
.writing-course .wc-review-button.is-active { background: var(--wc-tint); border-color: var(--wc-teal); }
.writing-course .wc-review-count { color: var(--wc-muted); font-size: 11px; }
.writing-course .wc-main { min-width: 0; scroll-margin-top: 20px; }
.writing-course .wc-main:focus:not(:focus-visible) { outline: none; }
.writing-course .wc-lesson, .writing-course .wc-review-panel { border: 1px solid var(--wc-line); border-radius: 14px; background: var(--wc-paper); padding: 30px; min-width: 0; }
.writing-course .wc-lesson-heading h3, .writing-course .wc-review-panel h3 { margin: 6px 0 9px; font-size: 25px; line-height: 1.4; letter-spacing: -.025em; }
.writing-course .wc-lesson-goal { color: var(--wc-muted); font-size: 14px; }
.writing-course .wc-complete-label { display: inline-block; font-size: 12px; color: var(--wc-teal); padding: 5px 9px; border-radius: 5px; background: var(--wc-tint); margin-top: 12px; }
.writing-course .wc-section { border-top: 1px solid var(--wc-line); padding-top: 25px; margin-top: 27px; }
.writing-course .wc-section-title { display: flex; gap: 11px; align-items: center; flex-wrap: wrap; margin-bottom: 17px; }
.writing-course .wc-section-title > span { font: italic 21px/1 Georgia, serif; color: var(--wc-teal); }
.writing-course .wc-section-title h4 { font-size: 17px; }
.writing-course .wc-section-title > small { font-size: 12px; color: var(--wc-muted); margin-left: auto; }
.writing-course .wc-prompt { border-left: 3px solid var(--wc-teal); padding: 13px 16px; background: var(--wc-tint); border-radius: 0 7px 7px 0; }
.writing-course .wc-prompt p { margin-top: 4px; font-size: 14px; white-space: pre-line; }
.writing-course .wc-steps { margin: 22px 0; padding-left: 23px; }
.writing-course .wc-steps li { padding-left: 5px; margin-bottom: 17px; }
.writing-course .wc-steps li::marker { color: var(--wc-teal); font-weight: 650; }
.writing-course .wc-steps h5 { font-size: 14px; margin-bottom: 3px; }
.writing-course .wc-steps p { color: var(--wc-muted); font-size: 14px; white-space: pre-line; }
.writing-course .wc-language-kit { display: grid; grid-template-columns: 1fr 1fr; gap: 21px; padding: 20px; border: 1px solid var(--wc-line); border-radius: 9px; background: #fafcfb; }
.writing-course .wc-language-kit h5 { font-size: 13px; margin-bottom: 11px; }
.writing-course .wc-vocabulary { margin: 0; display: grid; gap: 10px; }
.writing-course .wc-vocabulary dt { font: 16px/1.35 Georgia, "Times New Roman", serif; }
.writing-course .wc-vocabulary dd { color: var(--wc-muted); font-size: 12px; margin: 2px 0 0; }
.writing-course .wc-frames { list-style: none; margin: 0; padding: 0; display: grid; gap: 11px; }
.writing-course .wc-frames li { font: 16px/1.55 Georgia, "Times New Roman", serif; }
.writing-course .wc-question { min-width: 0; padding: 17px 0 20px; margin: 15px 0 0; border: none; border-bottom: 1px solid var(--wc-line); }
.writing-course .wc-question:last-child { border-bottom: 0; padding-bottom: 0; }
.writing-course .wc-question legend { float: left; width: 100%; padding: 0; font-size: 14px; font-weight: 650; line-height: 1.7; margin-bottom: 12px; }
.writing-course .wc-question legend + * { clear: both; }
.writing-course .wc-question-index { color: var(--wc-teal); }
.writing-course .wc-options { display: grid; gap: 8px; }
.writing-course .wc-option { display: flex; gap: 10px; padding: 10px 12px; border: 1px solid var(--wc-line); border-radius: 7px; font-size: 13px; cursor: pointer; align-items: flex-start; }
.writing-course .wc-option:hover { background: #f7faf8; }
.writing-course .wc-option.is-selected { border-color: #77aa9c; background: var(--wc-tint); }
.writing-course .wc-option input { flex: 0 0 16px; width: 16px; height: 16px; margin: 3px 0 0; }
.writing-course .wc-question-actions { display: flex; align-items: center; flex-wrap: wrap; gap: 10px; margin-top: 12px; font-size: 12px; }
.writing-course .wc-answer-correct { color: var(--wc-teal); }
.writing-course .wc-answer-wrong { color: #946119; }
.writing-course .wc-explanation { margin-top: 12px; border-radius: 6px; padding: 12px 14px; background: #eef6f1; font-size: 13px; }
.writing-course .wc-explanation.needs-review { background: #fcf6e9; }
.writing-course .wc-explanation p { margin-top: 3px; }
.writing-course .wc-explanation .wc-correct-choice { margin-top: 8px; color: #6b562d; }
.writing-course .wc-writing-prompt { display: block; font-size: 14px; margin-bottom: 7px; white-space: pre-line; }
.writing-course .wc-draft { display: block; width: 100%; margin-top: 13px; padding: 14px 15px; border: 1px solid #b9ccc4; border-radius: 8px; background: #fcfdfc; color: var(--wc-ink); line-height: 1.9; resize: vertical; min-height: 180px; }
.writing-course .wc-draft::placeholder { color: #7c8b86; font-size: 13px; }
.writing-course .wc-draft-meta { display: flex; flex-wrap: wrap; gap: 6px 14px; justify-content: space-between; margin-top: 7px; font-size: 11px; color: var(--wc-muted); }
.writing-course .wc-model { margin-top: 20px; border: 1px solid var(--wc-line); border-radius: 8px; padding: 12px 15px; }
.writing-course .wc-model summary { color: var(--wc-teal-dark); font-size: 13px; font-weight: 650; cursor: pointer; }
.writing-course .wc-model > p { margin-top: 12px; }
.writing-course .wc-model-text { margin-top: 12px; font: 17px/1.85 Georgia, "Times New Roman", serif; white-space: pre-line; overflow-wrap: anywhere; }
.writing-course .wc-self-check { border: 0; padding: 0; margin: 24px 0 0; min-width: 0; }
.writing-course .wc-self-check legend { font-size: 14px; font-weight: 650; padding: 0; margin-bottom: 5px; }
.writing-course .wc-self-check > p { margin-bottom: 12px; }
.writing-course .wc-self-check label { display: flex; gap: 10px; align-items: flex-start; font-size: 13px; padding: 7px 0; cursor: pointer; }
.writing-course .wc-self-check input { flex: 0 0 16px; width: 16px; height: 16px; margin: 3px 0 0; }
.writing-course .wc-lesson-footer { border-top: 1px solid var(--wc-line); margin-top: 28px; padding-top: 21px; }
.writing-course .wc-footer-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 15px; flex-wrap: wrap; }
.writing-course .wc-notice { padding: 11px 14px; border: 1px solid #bfd8ce; border-radius: 8px; background: #edf7f1; color: var(--wc-teal-dark); font-size: 13px; margin-bottom: 13px; }
.writing-course .wc-notice.is-error { border-color: #e1cbae; color: #83551d; background: #fdf5e9; }
.writing-course .wc-empty { border-top: 1px solid var(--wc-line); padding-top: 26px; margin-top: 25px; }
.writing-course .wc-empty strong { font-size: 16px; }
.writing-course .wc-empty p { color: var(--wc-muted); font-size: 13px; margin: 7px 0 17px; }
.writing-course .wc-review-item { padding-top: 25px; }
.writing-course .wc-text-link { background: none; border: 0; padding: 0; font-size: 12px; color: var(--wc-teal); text-decoration: underline; text-underline-offset: 3px; text-align: left; }
@media (max-width: 1040px) {
  .writing-course .wc-body { grid-template-columns: 200px minmax(0, 1fr); gap: 17px; }
  .writing-course .wc-lesson, .writing-course .wc-review-panel { padding: 24px; }
  .writing-course .wc-header { padding: 25px; gap: 24px; grid-template-columns: minmax(0, 1fr) 170px; }
  .writing-course .wc-progress-summary { padding-left: 20px; }
  .writing-course .wc-language-kit { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 760px) {
  .writing-course .wc-header { grid-template-columns: 1fr; padding: 23px; gap: 23px; }
  .writing-course .wc-progress-summary { border-left: 0; border-top: 1px solid var(--wc-line); padding: 17px 0 0; display: grid; grid-template-columns: 1fr auto; gap: 5px 18px; }
  .writing-course .wc-progress-summary > .wc-label { grid-column: 1; }
  .writing-course .wc-progress-number { grid-column: 1; margin: 0 0 9px; }
  .writing-course .wc-progress-number strong { font-size: 34px; }
  .writing-course .wc-progress-summary progress { grid-column: 1; }
  .writing-course .wc-progress-summary > .wc-muted { grid-column: 1 / -1; }
  .writing-course .wc-progress-summary .wc-button { grid-column: 2; grid-row: 1 / 4; align-self: center; margin: 0; }
  .writing-course .wc-body { grid-template-columns: 1fr; gap: 20px; }
  .writing-course .wc-sidebar { position: static; }
  .writing-course .wc-sidebar-heading { margin: 0 0 11px; }
  .writing-course .wc-course-list { grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; }
  .writing-course .wc-course-link { height: 100%; padding: 9px 7px; gap: 6px; border-color: var(--wc-line); background: white; }
  .writing-course .wc-course-number { flex-basis: 18px; font-size: 16px; }
  .writing-course .wc-course-description strong { font-size: 12px; }
  .writing-course .wc-course-description small { font-size: 10px; }
  .writing-course .wc-review-button { margin-top: 10px; }
}
@media (max-width: 440px) {
  .writing-course .wc-header { padding: 19px 17px; border-radius: 12px; }
  .writing-course .wc-intro h2 { font-size: 25px; }
  .writing-course .wc-intro > p:not(.wc-eyebrow) { font-size: 13px; }
  .writing-course .wc-learning-path { gap: 17px; margin-top: 19px; }
  .writing-course .wc-learning-path span { font-size: 12px; }
  .writing-course .wc-learning-path small { font-size: 10px; }
  .writing-course .wc-learning-path li:not(:last-child)::after { right: -14px; }
  .writing-course .wc-course-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .writing-course .wc-lesson, .writing-course .wc-review-panel { padding: 20px 15px; }
  .writing-course .wc-lesson-heading h3, .writing-course .wc-review-panel h3 { font-size: 22px; }
  .writing-course .wc-language-kit { padding: 15px; }
  .writing-course .wc-draft { font-size: 16px; padding: 12px; }
  .writing-course .wc-footer-actions { flex-direction: column-reverse; }
  .writing-course .wc-footer-actions .wc-button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  .writing-course *, .writing-course *::before, .writing-course *::after { scroll-behavior: auto !important; }
}