:root {
  --wsc-rd-purple: #563794;
  --wsc-rd-purple-2: #7352b2;
  --wsc-rd-purple-soft: #eee9f9;
  --wsc-rd-ink: #282331;
  --wsc-rd-muted: #6e6778;
  --wsc-rd-line: #ded9e6;
  --wsc-rd-bg: #f5f4f8;
  --wsc-rd-panel: #fff;
  --wsc-rd-green: #167363;
  --wsc-rd-red: #af3447;
  --wsc-rd-yellow: #fff09b;
}

* { box-sizing: border-box; }
html { background: var(--wsc-rd-bg); }
body.wsc-reading-document { margin: 0; background: var(--wsc-rd-bg); color: var(--wsc-rd-ink); font-family: "Microsoft YaHei", "PingFang SC", sans-serif; letter-spacing: 0; }
button, input, textarea, select { font: inherit; letter-spacing: 0; }
button { cursor: pointer; }
[hidden] { display: none !important; }

.wsc-rd-app { min-height: 100vh; background: var(--wsc-rd-bg); color: var(--wsc-rd-ink); }
.wsc-rd-topbar { min-height: 68px; padding: 12px clamp(16px, 3vw, 44px); display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #fff; background: var(--wsc-rd-purple); }
.wsc-rd-brand { min-width: 0; flex: 1; display: grid; grid-template-columns: 38px minmax(0, 1fr); grid-template-rows: auto auto; column-gap: 10px; color: #fff; text-decoration: none; }
.wsc-rd-brand > .dashicons { width: 38px; height: 38px; grid-row: 1 / 3; display: grid; place-items: center; border-radius: 7px; color: var(--wsc-rd-purple); background: #fff; font-size: 19px; }
.wsc-rd-brand strong { min-width: 0; font-size: 15px; font-weight: 700; overflow-wrap: anywhere; }
.wsc-rd-brand small { color: #ded3f4; font-size: 11px; }
.wsc-rd-account { display: flex; align-items: center; gap: 10px; font-size: 13px; white-space: nowrap; }
.wsc-rd-account b { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 50%; color: var(--wsc-rd-purple); background: #f0ebfa; }

.wsc-rd-nav { min-height: 58px; padding: 8px clamp(12px, 2.5vw, 36px); display: flex; gap: 5px; overflow-x: auto; background: #fff; border-bottom: 1px solid var(--wsc-rd-line); }
.wsc-rd-nav button { min-height: 40px; padding: 8px 12px; display: inline-flex; align-items: center; gap: 7px; color: #625b6d; background: transparent; border: 0; border-radius: 6px; white-space: nowrap; }
.wsc-rd-nav button.is-active { color: var(--wsc-rd-purple); background: var(--wsc-rd-purple-soft); font-weight: 700; }
.wsc-rd-nav .dashicons { width: 18px; height: 18px; font-size: 18px; }
.wsc-rd-main { width: min(1420px, 100%); margin: 0 auto; padding: clamp(18px, 3vw, 38px); }
.wsc-rd-view { display: none; }
.wsc-rd-view.is-active { display: block; }
.wsc-rd-page-head { margin-bottom: 22px; }
.wsc-rd-page-head small { color: #6b4ba4; font-size: 12px; font-weight: 700; }
.wsc-rd-page-head h1 { margin: 5px 0 7px; font-size: 26px; line-height: 1.3; }
.wsc-rd-page-head p { margin: 0; color: var(--wsc-rd-muted); font-size: 13px; }

.wsc-rd-module-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 14px; }
.wsc-rd-module-grid > button { min-width: 0; min-height: 190px; padding: 18px; display: grid; grid-template-columns: 46px 1fr auto; align-items: start; gap: 14px; text-align: left; color: inherit; background: #fff; border: 1px solid var(--wsc-rd-line); border-radius: 8px; }
.wsc-rd-module-grid > button:hover { border-color: #9275c3; }
.wsc-rd-module-grid i { width: 46px; height: 46px; display: grid; place-items: center; border-radius: 8px; color: #563794; background: #eee8fa; font-size: 22px; }
.wsc-rd-module-grid button:nth-child(2) i { color: #146b5e; background: #e3f4ef; }
.wsc-rd-module-grid button:nth-child(3) i { color: #9a5c14; background: #fff1da; }
.wsc-rd-module-grid h2 { margin: 2px 0 13px; font-size: 18px; }
.wsc-rd-module-grid p { min-height: 44px; margin: 0 0 18px; color: var(--wsc-rd-muted); font-size: 13px; line-height: 1.7; }
.wsc-rd-module-grid b { color: #6b4ba4; font-size: 12px; }
.wsc-rd-module-grid em { color: #6b4ba4; font-size: 12px; font-style: normal; }
.wsc-rd-wrong-summary { margin-top: 16px; padding: 18px 20px; display: grid; grid-template-columns: minmax(220px, 1fr) auto auto; align-items: center; gap: 24px; background: #fff; border: 1px solid var(--wsc-rd-line); border-left: 4px solid var(--wsc-rd-purple-2); border-radius: 8px; }
.wsc-rd-wrong-summary h2 { margin: 0 0 6px; font-size: 18px; }
.wsc-rd-wrong-summary p { margin: 0; color: var(--wsc-rd-muted); font-size: 12px; }
.wsc-rd-wrong-summary dl { display: flex; margin: 0; }
.wsc-rd-wrong-summary dl div { min-width: 112px; padding: 0 22px; border-left: 1px solid var(--wsc-rd-line); }
.wsc-rd-wrong-summary dt { font-size: 23px; font-weight: 700; }
.wsc-rd-wrong-summary dd { margin: 4px 0 0; color: var(--wsc-rd-muted); font-size: 12px; }
.wsc-rd-wrong-summary button, .wsc-rd-actions button, .wsc-rd-review-actions button { min-height: 42px; padding: 8px 15px; color: #fff; background: var(--wsc-rd-purple); border: 1px solid var(--wsc-rd-purple); border-radius: 6px; }
.wsc-rd-scope-note { margin: 18px 0 0; padding: 13px 15px; color: var(--wsc-rd-muted); background: #efecf4; border-radius: 6px; font-size: 12px; }

.wsc-rd-picker { margin-bottom: 16px; }
.wsc-rd-picker label { display: flex; align-items: center; gap: 10px; color: var(--wsc-rd-muted); font-size: 13px; }
.wsc-rd-picker select { min-width: min(360px, 100%); min-height: 40px; padding: 7px 10px; color: var(--wsc-rd-ink); background: #fff; border: 1px solid #cec8d6; border-radius: 6px; }
.wsc-rd-practice-layout { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(230px, .5fr); gap: 16px; }
.wsc-rd-practice-card, .wsc-rd-side-list, .wsc-rd-sentence-item, .wsc-rd-article-item, .wsc-rd-wrongbook, .wsc-rd-review-session { background: #fff; border: 1px solid var(--wsc-rd-line); border-radius: 8px; }
.wsc-rd-practice-card { min-height: 460px; padding: clamp(20px, 4vw, 38px); }
.wsc-rd-run-head { display: flex; align-items: center; justify-content: space-between; color: var(--wsc-rd-muted); font-size: 12px; }
.wsc-rd-run-head span { padding: 4px 8px; color: #654498; background: #eee8f8; border-radius: 4px; }
.wsc-rd-practice-card > h2 { margin: 70px 0 8px; text-align: center; font-family: Georgia, serif; font-size: 38px; }
.wsc-rd-practice-card > p { min-height: 20px; margin: 0 0 60px; text-align: center; color: #7660a4; }
.wsc-rd-practice-card label, .wsc-rd-sentence-grid label { display: grid; gap: 7px; color: var(--wsc-rd-muted); font-size: 13px; }
.wsc-rd-practice-card input, .wsc-rd-sentence-grid input, .wsc-rd-sentence-grid textarea { width: 100%; min-height: 46px; padding: 10px 12px; color: var(--wsc-rd-ink); background: #fff; border: 1px solid #cbc5d3; border-radius: 6px; }
.wsc-rd-sentence-grid textarea { min-height: 130px; resize: vertical; }
.wsc-rd-actions { margin-top: 16px; display: flex; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.wsc-rd-actions button.is-secondary, .wsc-rd-review-actions button.is-secondary { color: var(--wsc-rd-ink); background: #fff; border-color: #cfc9d7; }
.wsc-rd-feedback { margin-top: 15px; padding: 12px; border-radius: 6px; font-size: 13px; }
.wsc-rd-feedback.is-correct { color: #125f53; background: #e3f4ef; }
.wsc-rd-feedback.is-error { color: #9e3342; background: #fae7ea; }
.wsc-rd-side-list { padding: 20px; }
.wsc-rd-side-list h2 { margin: 0 0 14px; font-size: 17px; }
.wsc-rd-side-list p { color: var(--wsc-rd-muted); line-height: 1.7; }
.wsc-rd-side-list strong { color: var(--wsc-rd-purple); font-size: 13px; }

.wsc-rd-item-stack, .wsc-rd-article-list { display: grid; gap: 10px; }
.wsc-rd-sentence-item > summary, .wsc-rd-article-item > summary { padding: 16px 18px; display: flex; align-items: center; justify-content: space-between; gap: 14px; cursor: pointer; list-style: none; }
.wsc-rd-sentence-item > summary::-webkit-details-marker, .wsc-rd-article-item > summary::-webkit-details-marker { display: none; }
.wsc-rd-sentence-item > summary span { min-width: 110px; display: flex; align-items: center; gap: 7px; color: var(--wsc-rd-purple); font-weight: 700; }
.wsc-rd-sentence-item > summary small, .wsc-rd-article-item > summary small { padding: 3px 6px; color: #6b4ba4; background: var(--wsc-rd-purple-soft); border-radius: 4px; font-size: 10px; }
.wsc-rd-sentence-item > summary strong { max-width: 78%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-family: Georgia, serif; font-size: 14px; font-weight: 400; }
.wsc-rd-sentence-grid { padding: 0 18px 18px; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(300px, .9fr); gap: 16px; border-top: 1px solid #ebe7ee; }
.wsc-rd-sentence-grid > section, .wsc-rd-sentence-grid > aside { padding-top: 18px; }
.wsc-rd-sentence-grid blockquote { margin: 0 0 18px; padding: 16px; color: var(--wsc-rd-ink); background: #f7f4fb; border-left: 4px solid var(--wsc-rd-purple-2); font-family: Georgia, serif; font-size: 17px; line-height: 1.9; }
.wsc-rd-sentence-grid label + label { margin-top: 14px; }
.wsc-rd-sentence-grid aside { padding-left: 18px; border-left: 1px solid var(--wsc-rd-line); }
.wsc-rd-sentence-grid aside h3 { margin-top: 0; }
.wsc-rd-sentence-grid dl { margin: 0; }
.wsc-rd-sentence-grid dl div { padding: 12px 0; border-bottom: 1px solid #ebe7ee; }
.wsc-rd-sentence-grid dt { color: var(--wsc-rd-purple); font-size: 12px; font-weight: 700; }
.wsc-rd-sentence-grid dd { margin: 6px 0 0; color: var(--wsc-rd-muted); font-size: 13px; line-height: 1.7; }

.wsc-rd-article-item > summary span { display: grid; gap: 5px; }
.wsc-rd-article-item > summary strong { font-size: 16px; }
.wsc-rd-article-item > summary em { color: var(--wsc-rd-muted); font-size: 12px; font-style: normal; }
.wsc-rd-reading-layout { padding: 0 18px 18px; display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(270px, .55fr); gap: 16px; border-top: 1px solid #ebe7ee; }
.wsc-rd-reading-layout > article, .wsc-rd-reading-layout > aside { padding-top: 18px; }
.wsc-rd-reading-layout > aside { padding-left: 16px; border-left: 1px solid var(--wsc-rd-line); }
.wsc-rd-reading-tools { display: flex; gap: 7px; flex-wrap: wrap; margin-bottom: 18px; }
.wsc-rd-reading-tools button { min-height: 38px; padding: 7px 10px; display: inline-flex; align-items: center; gap: 5px; color: var(--wsc-rd-ink); background: #f5f2f8; border: 1px solid #d9d4df; border-radius: 6px; }
.wsc-rd-passage { font-family: Georgia, serif; font-size: 16px; line-height: 2; }
.wsc-rd-passage p { margin: 0 0 16px; }
.wsc-rd-passage mark { padding: 1px 0; color: inherit; background: var(--wsc-rd-yellow); }
.wsc-rd-reading-layout > aside > h3 { margin: 0 0 10px; }
.wsc-rd-reading-layout > aside > details { border-bottom: 1px solid #e9e5ec; }
.wsc-rd-reading-layout > aside > details > summary { padding: 12px 0; cursor: pointer; font-weight: 700; }
.wsc-rd-reading-layout > aside > details > div { padding: 0 0 13px; color: var(--wsc-rd-muted); font-size: 13px; line-height: 1.75; }
.wsc-rd-reference { padding: 10px; background: var(--wsc-rd-purple-soft); border-left: 3px solid var(--wsc-rd-purple-2); }
.wsc-rd-my-notes { margin-top: 16px; }
.wsc-rd-my-notes ul { margin: 0; padding: 0; list-style: none; }
.wsc-rd-my-notes li { padding: 9px; display: grid; gap: 4px; color: #5b506c; background: #f0ebf8; border-left: 3px solid #7252a8; font-size: 12px; }
.wsc-rd-my-notes li + li { margin-top: 7px; }

.wsc-rd-wrongbook { overflow: hidden; }
.wsc-rd-wrongbook > header { padding: 14px 16px; display: flex; align-items: center; justify-content: space-between; gap: 14px; border-bottom: 1px solid var(--wsc-rd-line); }
.wsc-rd-filter, .wsc-rd-review-actions { display: flex; align-items: center; gap: 7px; flex-wrap: wrap; }
.wsc-rd-filter button { min-height: 35px; padding: 6px 10px; color: var(--wsc-rd-muted); background: #fff; border: 1px solid #d6d0dc; border-radius: 6px; }
.wsc-rd-filter button.is-active { color: #fff; background: var(--wsc-rd-purple); border-color: var(--wsc-rd-purple); }
.wsc-rd-review-actions select { min-height: 42px; padding: 7px 9px; background: #fff; border: 1px solid #d0cad7; border-radius: 6px; }
.wsc-rd-table-wrap { overflow-x: auto; }
.wsc-rd-wrongbook table { width: 100%; border-collapse: collapse; font-size: 13px; }
.wsc-rd-wrongbook th, .wsc-rd-wrongbook td { padding: 12px 10px; text-align: left; border-bottom: 1px solid #ebe7ee; }
.wsc-rd-wrongbook th { color: var(--wsc-rd-muted); font-size: 12px; }
.wsc-rd-wrongbook td strong { font-family: Georgia, serif; font-size: 15px; }
.wsc-rd-link { padding: 0; color: var(--wsc-rd-purple); background: transparent; border: 0; }
.wsc-rd-review-session { min-height: 410px; padding: clamp(22px, 4vw, 42px); }
.wsc-rd-review-session > header { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; }
.wsc-rd-review-session > header small { color: var(--wsc-rd-purple); font-weight: 700; }
.wsc-rd-review-session > header h2 { margin: 48px 0 8px; font-family: Georgia, serif; font-size: 38px; }
.wsc-rd-review-session > header p { margin: 0 0 36px; color: var(--wsc-rd-muted); }
.wsc-rd-review-session > header b { color: var(--wsc-rd-muted); font-size: 13px; white-space: nowrap; }
.wsc-rd-review-session > label { display: grid; gap: 7px; color: var(--wsc-rd-muted); font-size: 13px; }
.wsc-rd-review-session > label input { width: 100%; min-height: 46px; padding: 10px 12px; border: 1px solid #cbc5d3; border-radius: 6px; }
.wsc-rd-empty, .wsc-rd-login { min-height: 360px; display: grid; place-items: center; text-align: center; }
.wsc-rd-empty { padding: 30px; background: #fff; border: 1px solid var(--wsc-rd-line); border-radius: 8px; }
.wsc-rd-empty .dashicons, .wsc-rd-login .dashicons { width: 48px; height: 48px; color: var(--wsc-rd-purple); font-size: 48px; }
.wsc-rd-login section { padding: 38px; background: #fff; border: 1px solid var(--wsc-rd-line); border-radius: 8px; }
.wsc-rd-login a { min-height: 42px; margin-top: 18px; padding: 8px 16px; display: inline-flex; align-items: center; color: #fff; background: var(--wsc-rd-purple); border-radius: 6px; text-decoration: none; }

/* Teacher content studio */
.wsc-rd-admin { max-width: 1480px; color: var(--wsc-rd-ink); }
.wsc-rd-admin-head { margin: 18px 0; padding: 22px; display: flex; align-items: center; justify-content: space-between; gap: 20px; color: #fff; background: var(--wsc-rd-purple); border-radius: 8px; }
.wsc-rd-admin-head small { color: #ddd2f3; font-weight: 700; }
.wsc-rd-admin-head h1 { margin: 4px 0 5px; color: #fff; }
.wsc-rd-admin-head p { margin: 0; color: #e5dcf4; }
.wsc-rd-admin-head .button { color: var(--wsc-rd-purple); background: #fff; border-color: #fff; }
.wsc-rd-admin-grid { margin-top: 18px; display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(310px, .5fr); gap: 16px; }
.wsc-rd-admin-grid > main, .wsc-rd-admin-grid > aside { display: grid; align-content: start; gap: 12px; }
.wsc-rd-admin-box { background: #fff; border: 1px solid #d9d4df; border-radius: 7px; }
.wsc-rd-admin-box > summary { padding: 15px 17px; display: flex; align-items: center; justify-content: space-between; cursor: pointer; list-style: none; }
.wsc-rd-admin-box > summary::-webkit-details-marker, .wsc-rd-admin-collection > summary::-webkit-details-marker, .wsc-rd-admin-item > summary::-webkit-details-marker, .wsc-rd-section-editor details > summary::-webkit-details-marker { display: none; }
.wsc-rd-admin-box > summary span { display: grid; gap: 4px; }
.wsc-rd-admin-box > summary small { color: var(--wsc-rd-muted); }
.wsc-rd-admin-box[open] > summary { border-bottom: 1px solid #e5e1e8; }
.wsc-rd-admin-box-body { padding: 14px; display: grid; gap: 8px; }
.wsc-rd-admin-collection { border: 1px solid #e2dee6; border-radius: 6px; }
.wsc-rd-admin-collection > summary { padding: 13px; display: flex; align-items: center; justify-content: space-between; gap: 12px; cursor: pointer; list-style: none; }
.wsc-rd-admin-collection > summary span { display: grid; gap: 3px; }
.wsc-rd-admin-collection > summary small { color: var(--wsc-rd-muted); }
.wsc-rd-admin-collection > summary em { color: var(--wsc-rd-purple); font-size: 12px; font-style: normal; }
.wsc-rd-admin-collection > div { padding: 12px; border-top: 1px solid #e7e3ea; }
.wsc-rd-row-form { display: flex; }
.wsc-rd-collection-actions { display: flex; align-items: flex-start; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.wsc-rd-inline-editor { position: relative; }
.wsc-rd-inline-editor > summary { list-style: none; }
.wsc-rd-inline-editor[open] { width: min(520px, 100%); }
.wsc-rd-inline-editor[open] > summary { margin-left: auto; }
.wsc-rd-inline-editor > form { margin-top: 8px; border: 1px solid #e4dfe8; border-radius: 6px; }
.wsc-rd-admin-items { margin: 10px 0 0; display: grid; gap: 7px; }
.wsc-rd-admin-item { border: 1px solid #e9e5ec; border-radius: 6px; }
.wsc-rd-admin-item > summary { padding: 11px 12px; display: flex; align-items: center; justify-content: space-between; gap: 14px; cursor: pointer; list-style: none; }
.wsc-rd-admin-item[open] > summary { border-bottom: 1px solid #e9e5ec; }
.wsc-rd-admin-item > div { padding: 0 12px 12px; }
.wsc-rd-admin-items span { min-width: 0; display: grid; gap: 3px; }
.wsc-rd-admin-items strong, .wsc-rd-admin-items small { overflow-wrap: anywhere; }
.wsc-rd-admin-items small { color: var(--wsc-rd-muted); }
.wsc-rd-admin-items em { color: var(--wsc-rd-purple); font-size: 12px; font-style: normal; white-space: nowrap; }
.wsc-rd-admin-form { padding: 15px; display: grid; gap: 12px; }
.wsc-rd-admin-form label { display: grid; gap: 5px; font-weight: 600; }
.wsc-rd-admin-form input:not([type="checkbox"]), .wsc-rd-admin-form select, .wsc-rd-admin-form textarea { width: 100%; }
.wsc-rd-admin-form p { margin: 0; color: var(--wsc-rd-muted); font-size: 12px; line-height: 1.6; }
.wsc-rd-check { display: flex !important; grid-template-columns: auto 1fr; align-items: center; gap: 7px !important; font-weight: 400 !important; }
.wsc-rd-check input { margin: 0; }
.wsc-rd-edit-form { margin-top: 12px; background: #faf9fb; border-radius: 6px; }
.wsc-rd-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.wsc-rd-item-danger, .wsc-rd-section-delete { margin-top: 12px; padding: 12px; background: #fff5f6; border: 1px solid #efc9cf; border-radius: 6px; }
.wsc-rd-item-danger form, .wsc-rd-section-delete { display: flex; align-items: end; justify-content: flex-end; gap: 8px; flex-wrap: wrap; }
.wsc-rd-item-danger label, .wsc-rd-section-delete label { display: grid; gap: 5px; color: var(--wsc-rd-red); font-weight: 600; }
.wsc-rd-item-danger input, .wsc-rd-section-delete input { min-height: 30px; }
.wsc-rd-item-danger .button, .wsc-rd-section-delete .button { color: #fff; background: var(--wsc-rd-red); border-color: var(--wsc-rd-red); }
.wsc-rd-section-editor { margin: 14px 0; padding: 14px; background: #f5f3f7; border-radius: 6px; }
.wsc-rd-section-editor h4 { margin: 0 0 10px; }
.wsc-rd-section-editor > details { background: #fff; border: 1px solid #dfdae4; border-radius: 5px; }
.wsc-rd-section-editor > details + details { margin-top: 7px; }
.wsc-rd-section-editor > details > summary { padding: 10px 12px; display: flex; justify-content: space-between; gap: 10px; cursor: pointer; list-style: none; }
.wsc-rd-section-editor > details > summary em { color: var(--wsc-rd-purple); font-size: 12px; font-style: normal; }
.wsc-rd-section-editor > details > div { padding: 0 12px 12px; }
.wsc-rd-bulk-publish { border-top: 1px solid #e5e1e8; }
.wsc-rd-admin-box.is-danger { border-color: #e7b9c0; }
.wsc-rd-admin-box.is-danger > summary strong { color: var(--wsc-rd-red); }
.wsc-rd-admin-box.is-danger .button { color: #fff; background: var(--wsc-rd-red); border-color: var(--wsc-rd-red); }
.wsc-rd-admin-empty { margin: 0; padding: 20px; text-align: center; color: var(--wsc-rd-muted); }

@media (max-width: 980px) {
  .wsc-rd-module-grid { grid-template-columns: 1fr; }
  .wsc-rd-wrong-summary { grid-template-columns: 1fr auto; }
  .wsc-rd-wrong-summary button { grid-column: 1 / -1; }
  .wsc-rd-practice-layout, .wsc-rd-sentence-grid, .wsc-rd-reading-layout, .wsc-rd-admin-grid { grid-template-columns: 1fr; }
  .wsc-rd-sentence-grid aside, .wsc-rd-reading-layout > aside { padding-left: 0; border-left: 0; border-top: 1px solid var(--wsc-rd-line); }
}

@media (max-width: 640px) {
  .wsc-rd-topbar { min-height: 60px; padding: 10px 12px; }
  .wsc-rd-brand strong { font-size: 13px; }
  .wsc-rd-brand small, .wsc-rd-account span { display: none; }
  .wsc-rd-account { display: none; }
  .wsc-rd-nav { padding: 7px 8px; }
  .wsc-rd-main { padding: 16px 12px 28px; }
  .wsc-rd-page-head h1 { font-size: 23px; }
  .wsc-rd-module-grid > button { min-height: 0; grid-template-columns: 42px 1fr; }
  .wsc-rd-module-grid > button em { grid-column: 2; }
  .wsc-rd-module-grid p { min-height: 0; }
  .wsc-rd-wrong-summary { grid-template-columns: 1fr; }
  .wsc-rd-wrong-summary dl { width: 100%; }
  .wsc-rd-wrong-summary dl div { min-width: 0; flex: 1; }
  .wsc-rd-practice-card { min-height: 420px; }
  .wsc-rd-practice-card > h2 { margin-top: 52px; font-size: 32px; overflow-wrap: anywhere; }
  .wsc-rd-actions, .wsc-rd-wrongbook > header { align-items: stretch; flex-direction: column; }
  .wsc-rd-actions button, .wsc-rd-review-actions button { width: 100%; }
  .wsc-rd-review-actions { display: grid; grid-template-columns: 1fr; }
  .wsc-rd-sentence-item > summary { align-items: flex-start; flex-direction: column; }
  .wsc-rd-sentence-item > summary strong { max-width: 100%; white-space: normal; }
  .wsc-rd-reading-layout { padding: 0 14px 14px; }
  .wsc-rd-passage { font-size: 15px; }
  .wsc-rd-admin-head { align-items: flex-start; flex-direction: column; }
  .wsc-rd-form-row { grid-template-columns: 1fr; }
  .wsc-rd-item-danger form, .wsc-rd-section-delete { align-items: stretch; flex-direction: column; }
  .wsc-rd-review-session > header h2 { margin-top: 34px; font-size: 32px; overflow-wrap: anywhere; }
}

/* Long-sentence bridge inside reading-study */
.wsc-rd-ls-bridge { padding: 24px 0 40px; }
.wsc-rd-ls-bridge-card {
  width: min(720px, 100%);
  margin: 0 auto;
  padding: 28px;
  background: linear-gradient(180deg, #fff, #faf8ff);
  border: 1px solid #e6e0f7;
  border-radius: 20px;
  box-shadow: 0 16px 40px rgba(72, 48, 140, .08);
}
.wsc-rd-ls-bridge-kicker {
  display: inline-block;
  color: #6b4de0;
  font-size: 12px;
  font-weight: 700;
}
.wsc-rd-ls-bridge-card h2 { margin: 8px 0 10px; color: #2c245a; font-size: 28px; }
.wsc-rd-ls-bridge-card p { margin: 0 0 20px; color: #6f6888; line-height: 1.6; }
.wsc-rd-ls-bridge-btn {
  display: inline-flex; align-items: center; min-height: 44px; padding: 0 18px;
  color: #fff !important; background: #6741dd; border-radius: 12px; text-decoration: none !important; font-weight: 700;
}