.hsk-review { --review-accent: #087f75; --review-soft: #edf7f4; --review-line: #dce5e1; --review-muted: #65756f; --review-panel: #fff; width: 100%; min-width: 0; margin: 0 auto; padding: 24px 0 80px; color: #233b32; }
.dark .hsk-review { --review-accent: #64dcc4; --review-soft: #1c3430; --review-line: #35433f; --review-muted: #a4b6ad; --review-panel: #222b29; color: #e4eee8; }
.review-intro { display: flex; justify-content: space-between; align-items: center; gap: 24px; margin-bottom: 30px; }
.review-eyebrow { font-size: 11px; letter-spacing: .12em; font-weight: 750; color: var(--review-accent); margin-bottom: 9px; }
.review-intro h1 { font-size: clamp(28px, 3.5vw, 42px); line-height: 1.15; font-weight: 750; letter-spacing: -.035em; margin-bottom: 12px; }
.review-intro p:last-child, .review-muted { color: var(--review-muted); font-size: 13px; line-height: 1.65; }
.review-series { display: flex; padding: 4px; background: var(--review-soft); border-radius: 12px; white-space: nowrap; }
.review-series a { padding: 10px 17px; border-radius: 9px; font-weight: 650; font-size: 14px; }
.review-series a[aria-current] { background: var(--review-panel); color: var(--review-accent); box-shadow: 0 2px 5px #0001; }
.review-toolbar { position: sticky; top: 0; z-index: 30; background: var(--review-panel); border: 1px solid var(--review-line); padding: 12px; border-radius: 0 0 14px 14px; display: flex; align-items: center; gap: 20px; box-shadow: 0 5px 20px #00000008; margin-bottom: 28px; }
.review-search { position: relative; flex: 1; }
.review-search input { width: 100%; border: 0; background: var(--review-soft); border-radius: 8px; padding: 12px 15px; color: inherit; }
.review-options { display: flex; align-items: center; gap: 16px; font-size: 13px; white-space: nowrap; }
.review-options label { display: flex; gap: 6px; align-items: center; }
.hsk-review input[type=checkbox], .hsk-review input[type=range] { accent-color: var(--review-accent); }
.review-primary { background: #087f75; color: white; padding: 11px 17px; border-radius: 8px; font-weight: 650; }
.review-primary:hover { background: #06675f; }
.hsk-review button:disabled { opacity: .5; cursor: wait; }
.hsk-review :focus-visible { outline: 3px solid var(--review-accent); outline-offset: 3px; }
.review-layout { display: grid; grid-template-columns: minmax(0, 1fr) 216px; gap: 32px; }
.review-outline { grid-column: 2; grid-row: 1; position: sticky; top: 101px; align-self: start; max-height: calc(100dvh - 121px); overflow: auto; padding-left: 20px; border-left: 1px solid var(--review-line); }
.review-navigation-label { color: var(--review-muted); font-size: 12px; margin-bottom: 8px; }
.review-position { font-weight: 650; margin-bottom: 12px; font-size: 13px; }
.review-outline select { width: 100%; font-size: 12px; background-color: var(--review-panel); color: inherit; border: 1px solid var(--review-line); border-radius: 8px; margin-bottom: 12px; }
.review-current { border-top: 1px solid var(--review-line); padding-top: 16px; margin-top: 4px; }
.review-current-title { font-size: 16px; font-weight: 650; margin-bottom: 6px; }
.review-current-lesson { font-size: 13px; line-height: 1.6; margin-bottom: 6px; }
.review-current-links { display: flex; flex-direction: column; align-items: flex-start; gap: 10px; margin-top: 16px; font-size: 12px; color: var(--review-accent); }
.review-current-links a:hover { text-decoration: underline; text-underline-offset: 3px; }
.review-back-top { display: inline-flex; align-items: center; gap: 8px; margin-top: 16px; padding: 6px 0; color: var(--review-accent); font-size: 12px; }
.review-back-top:hover { text-decoration: underline; text-underline-offset: 3px; }
.review-feed { grid-column: 1; grid-row: 1; min-width: 0; overflow-anchor: none; }
.review-slot { scroll-margin-top: 111px; outline: none; }
.review-slot + .review-slot { margin-top: 20px; }
.review-section { background: var(--review-panel); border: 1px solid var(--review-line); border-radius: 16px; padding: 25px; margin-bottom: 28px; }
.review-section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 18px; padding-bottom: 16px; border-bottom: 1px solid var(--review-line); }
.review-section-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 12px; }
.review-text-quiz { padding: 8px 12px; border: 1px solid var(--review-line); border-radius: 8px; color: var(--review-accent); background: var(--review-soft); font-size: 12px; font-weight: 650; white-space: nowrap; }
.review-text-quiz:hover { border-color: var(--review-accent); }
.review-section-heading .review-eyebrow { font-size: clamp(18px, 1.7vw, 22px); line-height: 1.4; letter-spacing: -.01em; margin-bottom: 8px; }
.review-section-heading .review-eyebrow span { padding: 0 5px; color: var(--review-muted); font-weight: 400; }
.review-lesson-name { font-size: 14px; font-weight: 500; line-height: 1.5; }
.review-course-link, .review-text-link { color: var(--review-accent); font-size: 12px; font-weight: 650; white-space: nowrap; }
.review-text-link { display: inline-block; margin-top: 20px; }
.review-placeholder { color: var(--review-muted); padding: 12px 0; }
.review-placeholder h3, .review-subheading { color: var(--review-muted); font-size: 13px; font-weight: 650; margin-bottom: 8px; }
.review-placeholder p, .review-placeholder a { margin-top: 8px; font-size: 13px; }
.review-placeholder a { display: inline-block; text-decoration: underline; }
.review-slot[aria-busy=true] .review-placeholder::after { content: ''; display: block; width: 22px; height: 22px; border: 2px solid var(--review-line); border-top-color: var(--review-accent); border-radius: 50%; animation: review-spin .8s linear infinite; margin-top: 18px; }
.review-word-table { width: 100%; border-collapse: collapse; text-align: left; }
.review-word-table th { color: var(--review-muted); font-size: 11px; font-weight: 500; }
.review-word-table th, .review-word-table td { padding: 8px 10px; border-bottom: 1px solid var(--review-line); vertical-align: middle; overflow-wrap: anywhere; }
.review-word-table .review-word-play { width: 42px; padding-left: 0; padding-right: 6px; }
.review-word-table .review-word-main { width: 20%; }
.review-hanzi { font-size: 21px; font-weight: 600; }
.review-word-pinyin { color: var(--review-muted); font-size: 14px; }
.review-word-meaning { font-size: 14px; }
.hsk-review .review-word-audio { display: inline-flex; width: auto; padding: 0; margin: 0; border: 0; background: none; box-shadow: none; }
.review-word-audio .themed-audio-player__time, .review-word-audio .themed-audio-player__seek-wrap { display: none; }
.review-word-audio .themed-audio-player__button { width: 32px; height: 32px; }
.hsk-review[data-pinyin=false] .review-word-pinyin, .hsk-review[data-english=false] .review-word-meaning { display: none; }
.review-highlight { background: var(--review-soft); outline: 2px solid var(--review-accent); border-radius: 8px; padding: 16px; }
.review-end, .review-empty { padding: 35px; text-align: center; color: var(--review-muted); }
.review-search-results { position: absolute; top: calc(100% + 8px); left: 0; right: 0; max-height: min(65vh, 540px); overflow: auto; border: 1px solid var(--review-line); background: var(--review-panel); box-shadow: 0 14px 35px #0002; border-radius: 10px; }
.review-search-results a { display: block; padding: 12px 15px; border-bottom: 1px solid var(--review-line); }
.review-search-results a:hover, .review-search-results a:focus { background: var(--review-soft); }
.review-search-results strong { display: block; font-size: 18px; }
.review-search-results small { display: block; color: var(--review-muted); margin-top: 4px; }
.review-search-results > p { padding: 15px; font-size: 13px; }
.review-search-results h3 { padding: 10px 15px; font-size: 12px; font-weight: 700; color: var(--review-accent); background: var(--review-soft); border-bottom: 1px solid var(--review-line); }
.review-text-results > p { padding: 15px; font-size: 13px; color: var(--review-muted); }
.review-search-excerpt { display: block; font-size: 17px; line-height: 1.65; margin-top: 6px; }
.review-search-results .review-search-match { color: var(--review-accent); }
.review-search-more { display: block; width: 100%; padding: 14px 15px; text-align: left; color: var(--review-accent); font-size: 13px; font-weight: 650; }
.review-search-more:hover { background: var(--review-soft); }
.review-quiz { width: min(700px, 94vw); max-height: 88vh; overflow: auto; background: var(--review-panel); color: inherit; border: 1px solid var(--review-line); border-radius: 18px; padding: 26px; }
.review-quiz::backdrop { background: #10281ecc; backdrop-filter: blur(3px); }
.review-quiz-heading { display: flex; justify-content: space-between; margin-bottom: 16px; }
.review-quiz-heading h2 { font-size: 25px; font-weight: 700; }
.review-close { font-size: 28px; line-height: 1; padding: 5px 10px; }
.review-quiz-controls { display: flex; flex-wrap: wrap; gap: 20px; margin: 20px 0; }
.review-quiz-controls label { font-size: 13px; display: grid; gap: 6px; }
.review-quiz-controls input, .review-quiz-controls select { border-radius: 7px; background-color: var(--review-panel); color: inherit; border: 1px solid var(--review-line); }
.review-quiz-controls input { width: 85px; }
.review-selection-tools { display: flex; gap: 18px; font-size: 12px; color: var(--review-accent); margin-bottom: 12px; }
.review-quiz-scope { max-height: 34vh; overflow: auto; border: 1px solid var(--review-line); border-radius: 10px; margin-bottom: 15px; }
.review-quiz-scope details { border-bottom: 1px solid var(--review-line); padding: 12px 15px; }
.review-quiz-scope summary { cursor: pointer; font-weight: 650; }
.review-quiz-scope label { display: block; font-size: 13px; margin: 8px 0; }
.review-quiz-scope fieldset { padding-left: 20px; }
.review-quiz-scope legend { font-weight: 600; padding: 0; }
.review-quiz-scope fieldset > label { padding-left: 15px; }
.review-quiz [role=status] { font-size: 13px; margin: 12px 0; }
.review-quiz-prompt { font-size: 32px; font-weight: 650; padding: 25px 0; }
.review-quiz-choices { display: grid; gap: 10px; margin-bottom: 20px; }
.review-quiz-choices button { padding: 14px; text-align: left; border: 1px solid var(--review-line); border-radius: 9px; }
.review-quiz-choices button:hover { background: var(--review-soft); }
.review-quiz-choices button[data-correct=true] { border-color: var(--review-accent); background: var(--review-soft); }
.review-quiz-choices button[data-wrong=true] { border-color: #e86a6a; }
.review-quiz-feedback { margin: 16px 0; }
.review-quiz-mistake { border-bottom: 1px solid var(--review-line); padding: 12px 0; }
.review-quiz-actions { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-top: 20px; }
.review-quiz-choices button:disabled, .review-quiz-typing button:disabled { opacity: 1; cursor: default; }
.review-quiz-choices button:disabled:not([data-correct=true]):not([data-wrong=true]) { opacity: .55; }
.review-quiz-typing label { display: block; font-weight: 600; margin-bottom: 5px; }
.review-quiz-typing > div { display: flex; gap: 10px; margin-top: 12px; }
.review-quiz-typing input { flex: 1; min-width: 0; border: 1px solid var(--review-line); border-radius: 8px; background: var(--review-panel); color: inherit; padding: 12px; font-size: 20px; }
.review-quiz-typing input[data-correct=true] { border-color: var(--review-accent); background: var(--review-soft); }
.review-quiz-typing input[data-wrong=true] { border-color: #e86a6a; }
.review-quiz-previous { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--review-line); }
.review-quiz-previous h3, .review-quiz-review-title { font-weight: 650; font-size: 15px; margin-bottom: 12px; }
.review-quiz-review-title { margin-top: 28px; }
.review-quiz-responses { list-style: none; padding: 0; }
.review-quiz-response { padding: 15px; margin-bottom: 12px; border: 1px solid var(--review-line); border-left: 3px solid var(--review-accent); border-radius: 8px; font-size: 14px; overflow-wrap: anywhere; }
.review-quiz-response[data-correct=false] { border-left-color: #e86a6a; }
.review-quiz-result-label { font-weight: 650; color: var(--review-accent); margin-bottom: 10px; }
.review-quiz-response[data-correct=false] .review-quiz-result-label { color: #c94242; }
.dark .review-quiz-response[data-correct=false] .review-quiz-result-label { color: #ffaaaa; }
.review-quiz-response dl { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 8px 12px; line-height: 1.55; }
.review-quiz-response dt { color: var(--review-muted); }
.review-quiz-response dd { margin: 0; }
.review-quiz-submission { white-space: pre-wrap; }
.review-quiz-response .review-text-link { margin-top: 12px; margin-right: 16px; }
.review-quiz [data-quiz-audio-status]:empty, .review-quiz [data-review-audio-status]:empty { display: none; }
@media (max-width: 480px) { .review-quiz { padding: 20px; } .review-quiz-typing > div { flex-wrap: wrap; } .review-quiz-typing input { flex-basis: 100%; } .review-quiz-response dl { grid-template-columns: 1fr; gap: 3px; } .review-quiz-response dd { margin-bottom: 8px; } }
@keyframes review-spin { to { transform: rotate(360deg); } }
@media (max-width: 1100px) { .review-layout { grid-template-columns: minmax(0, 1fr) 190px; gap: 24px; } .review-outline { padding-left: 16px; } }
@media (max-width: 900px) { .hsk-review { padding: 16px 0 50px; } .review-layout { display: block; } .review-outline { position: static; max-height: none; border-left: 0; border-bottom: 1px solid var(--review-line); padding: 0 0 16px; margin-bottom: 22px; } .review-outline select { max-width: 360px; } .review-current { max-width: 360px; } .review-current-links { flex-direction: row; flex-wrap: wrap; gap: 12px; } .review-back-top { position: fixed; right: 20px; bottom: 20px; z-index: 30; padding: 10px 14px; border: 1px solid var(--review-line); border-radius: 8px; background: var(--review-panel); box-shadow: 0 2px 8px #0001; } .review-section { padding: 18px; } }
@media (max-width: 640px) { .review-intro { display: block; } .review-series { width: fit-content; margin-top: 18px; } .review-toolbar { flex-wrap: wrap; gap: 10px; } .review-search { flex-basis: 100%; min-width: 0; } .review-options { justify-content: space-between; width: 100%; gap: 10px; } .review-primary { padding: 10px 12px; } .review-slot { scroll-margin-top: 155px; } .review-section { padding: 15px; } .review-section-heading { display: block; } .review-course-link { display: inline-block; margin-top: 12px; } }
@media (prefers-reduced-motion: reduce) { .hsk-review *, .hsk-review *::after { animation: none !important; transition: none !important; } }
@media (max-width: 640px) { .review-section-actions { justify-content: flex-start; margin-top: 12px; } .review-section-actions .review-course-link { margin-top: 0; } }