.textbook-reading-head{margin-bottom:18px}.textbook-reading-filter-panel{display:grid;gap:15px;margin:0 0 17px;padding:18px 20px;border:1px solid #d8e2ef;border-radius:8px;background:#f8fbff}.textbook-reading-filter-line{display:flex;align-items:flex-start;gap:15px}.textbook-reading-filter-line>strong{width:48px;padding-top:8px;color:#64738d;font-size:13px}.textbook-reading-filter-line nav{display:flex;flex-wrap:wrap;gap:8px}.textbook-reading-filter{min-height:34px;padding:6px 12px;border:1px solid #d5dfed;border-radius:7px;background:#fff;color:#33435e;font:inherit;font-size:13px;cursor:pointer}.textbook-reading-filter:hover,.textbook-reading-filter.is-active{border-color:#655bf1;background:#6258eb;color:#fff}.textbook-reading-catalog-guide{display:flex;align-items:center;justify-content:flex-end;flex-wrap:wrap;gap:8px 14px;margin:0 0 15px;color:#697892;font-size:12px}.textbook-reading-catalog-guide strong{color:#273650}.textbook-reading-catalog-guide span{display:inline-flex;align-items:center;gap:3px}.textbook-reading-catalog-guide kbd{min-width:21px;padding:2px 5px;border:1px solid #cad5e5;border-radius:4px;background:#f4f7fb;color:#3c4b66;font:700 11px/1.2 Inter,"PingFang SC","Microsoft YaHei",sans-serif;text-align:center}.textbook-reading-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:15px}.textbook-reading-card{display:grid;grid-template-columns:128px minmax(0,1fr);grid-template-rows:minmax(0,1fr) auto;gap:12px;padding:12px;border:1px solid #dbe3ef;border-radius:8px;background:#fff;box-shadow:0 10px 24px rgba(35,51,82,.07)}.textbook-reading-card:hover{border-color:#aaa4f7;box-shadow:0 16px 32px rgba(48,54,105,.13)}
.textbook-reading-cover{position:relative;grid-row:1 / span 2;display:flex;flex-direction:column;justify-content:space-between;min-height:176px;aspect-ratio:2 / 3;overflow:hidden;padding:10px;border-radius:7px;background-position:center;background-repeat:no-repeat;background-size:cover;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.4)}.textbook-reading-cover::after{content:"";position:absolute;right:0;bottom:0;left:0;height:24%;background:rgba(6,27,55,.72)}.textbook-reading-cover>*{position:relative;z-index:1}.textbook-reading-cover span{font-size:12px;font-weight:800}.textbook-reading-cover strong{margin-top:auto;font-size:16px}.textbook-reading-cover small{font-size:11px;line-height:1.25}.textbook-reading-cover[data-art="campus"]{background-image:url('assets/course-cover-campus-portrait.png')}.textbook-reading-cover[data-art="classroom"]{background-image:url('assets/course-cover-classroom-portrait.png')}.textbook-reading-cover[data-art="collage"]{background-image:url('assets/course-cover-collage-portrait.png')}.textbook-reading-card-body{min-width:0;padding:4px 3px}.textbook-reading-badges{display:flex;gap:6px;flex-wrap:wrap}.textbook-reading-badges span{padding:4px 7px;border-radius:5px;background:#eef0ff;color:#5a51d8;font-size:11px;line-height:1}.textbook-reading-card h2{margin:9px 0 5px;color:#14213a;font-size:18px;line-height:1.28}.textbook-reading-card p{margin:0 0 6px;color:#697894;font-size:13px;line-height:1.4}.textbook-reading-card-body>small{color:#8190a8;font-size:12px}.textbook-reading-card-actions{grid-column:2;display:flex;flex-wrap:wrap;gap:7px}.textbook-reading-card-actions .btn{padding:8px 11px;font-size:12px}.textbook-reading-empty,.textbook-reading-error{grid-column:1 / -1;padding:64px 24px;border:1px dashed #cbd7e6;border-radius:8px;background:#fff;text-align:center}.textbook-reading-empty h2,.textbook-reading-error h2{margin:0 0 8px;color:#1a2942;font-size:21px}.textbook-reading-empty p,.textbook-reading-error p{margin:0 0 18px;color:#74839b}.textbook-reading-exercise-toolbar{display:flex;align-items:center;justify-content:space-between;gap:15px;margin:0 0 18px;padding:12px 14px;border:1px solid #d8e2ef;border-radius:8px;background:#fff}.textbook-reading-mode-tabs{display:flex;gap:7px;flex-wrap:wrap}.textbook-reading-mode{min-height:36px;padding:7px 13px;border:1px solid #d5dfed;border-radius:7px;background:#fff;color:#41516b;font:inherit;font-size:13px;cursor:pointer}.textbook-reading-mode.is-active{border-color:#6258eb;background:#6258eb;color:#fff}.textbook-reading-audio-area{display:flex;align-items:center;gap:9px;color:#74839b;font-size:12px;white-space:nowrap}.textbook-unit-audio{min-width:142px}.textbook-unit-audio.is-playing{background:#2a9d8f;border-color:#2a9d8f}.textbook-reading-practice,.textbook-reading-listen{max-width:1020px;margin:0 auto;padding:25px 30px;border:1px solid #d9e2ee;border-radius:8px;background:#fff;box-shadow:0 12px 28px rgba(35,51,82,.07);outline:none}.textbook-reading-progress{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;color:#74839b;font-size:13px}.textbook-reading-progress strong{color:#6057e7}.textbook-reading-copy{padding:22px 18px;border:1px solid #e1e7f0;border-radius:8px;background:#f8fafc;text-align:center}.textbook-reading-label{margin-bottom:7px;color:#756ce5;font-size:12px;font-weight:800;letter-spacing:.03em}.textbook-reading-copy h2{margin:0 auto 15px;color:#15233d;font-size:27px;line-height:1.4}.textbook-reading-copy p{margin:0;color:#697993;font-size:18px;line-height:1.65}
.textbook-typing-line{display:flex;flex-wrap:wrap;justify-content:center;gap:3px 5px;min-height:58px;margin:22px 0;padding:15px 10px;border-bottom:2px solid #dae3ef;color:#6d7d96;font-size:22px;line-height:1.6}.textbook-typing-slot{display:inline-block;min-width:13px;color:#a8b4c6;text-align:center}.textbook-typing-slot.is-typed{color:#293a58}.textbook-typing-slot.is-current{color:#6258eb;text-decoration:underline;text-decoration-thickness:3px;text-underline-offset:5px}.textbook-typing-separator{color:#687993;white-space:pre}.textbook-reading-feedback{min-height:22px;color:#cc6a25;text-align:center;font-size:13px}.textbook-reading-feedback.is-correct{color:#21866e}.textbook-reading-tip{margin:18px 0 0;color:#8794a9;font-size:12px;text-align:center}.textbook-reading-nav{display:flex;justify-content:center;gap:9px;margin-top:18px}.textbook-reading-stats{display:flex;justify-content:center;gap:30px;margin-top:17px;color:#8591a6;font-size:12px}.textbook-reading-stats b{margin-right:3px;color:#354765;font-size:17px}.textbook-reading-complete{max-width:680px;margin:35px auto;padding:50px 25px;border:1px solid #d9e2ee;border-radius:8px;background:#fff;text-align:center}.textbook-reading-complete h2{margin:10px 0;color:#172640;font-size:28px}.textbook-reading-complete p{margin:0 0 20px;color:#71809a}.textbook-order-answer{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;min-height:58px;margin:22px 0;padding:13px;border:1px dashed #c9d5e6;border-radius:8px;background:#fbfcfe}.textbook-order-bank{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin:15px 0}.textbook-order-chip{padding:8px 12px;border:1px solid #cfd9e8;border-radius:6px;background:#fff;color:#273a58;font:inherit;font-size:14px;cursor:pointer}.textbook-order-chip:hover,.textbook-order-chip.is-selected{border-color:#6258eb;background:#efedff;color:#5147d0}.textbook-order-placeholder{align-self:center;color:#9aa6b7;font-size:13px}.textbook-reading-listen{max-width:1100px}.textbook-reading-listen-note{margin-bottom:17px;padding:12px 14px;border-radius:7px;background:#f0f5ff;color:#5c6d88;font-size:13px;line-height:1.5}.textbook-reading-listen-section{padding:18px 0;border-top:1px solid #e3e8f0}.textbook-reading-listen-section:first-of-type{padding-top:0;border-top:0}.textbook-reading-listen-section h2{margin:0 0 12px;color:#1a2a45;font-size:18px}.textbook-reading-listen-row{display:grid;grid-template-columns:30px minmax(0,1fr);gap:12px;padding:12px 0;border-top:1px solid #edf0f5}.textbook-reading-listen-row>span{color:#6e65e6;font-weight:800}.textbook-reading-listen-row strong{display:block;color:#263853;font-size:16px;line-height:1.55}.textbook-reading-listen-row p{margin:5px 0 0;color:#71809a;font-size:14px;line-height:1.6}.textbook-reading-error{max-width:700px;margin:30px auto}
@media(max-width:900px){.textbook-reading-grid{grid-template-columns:1fr}.textbook-reading-exercise-toolbar{align-items:flex-start;flex-direction:column}.textbook-reading-audio-area{width:100%;justify-content:space-between}.textbook-reading-practice,.textbook-reading-listen{padding:20px 18px}}@media(max-width:620px){.textbook-reading-filter-line{display:block}.textbook-reading-filter-line>strong{display:block;width:auto;margin-bottom:8px}.textbook-reading-cover{min-height:148px}.textbook-reading-card{grid-template-columns:105px minmax(0,1fr);gap:10px}.textbook-reading-card h2{font-size:16px}.textbook-reading-card-actions{grid-column:1 / -1}.textbook-reading-card-actions .btn{flex:1}.textbook-reading-copy h2{font-size:21px}.textbook-reading-copy p{font-size:16px}.textbook-typing-line{font-size:18px}.textbook-reading-catalog-guide{justify-content:flex-start}}
@media(max-width:900px){.textbook-reading-grid{grid-template-columns:1fr}.textbook-reading-exercise-toolbar{align-items:flex-start;flex-direction:column}.textbook-reading-audio-area{width:100%;justify-content:space-between}.textbook-reading-practice,.textbook-reading-listen{padding:20px 18px}}@media(max-width:620px){.textbook-reading-filter-line{display:block}.textbook-reading-filter-line>strong{display:block;width:auto;margin-bottom:8px}.textbook-reading-cover{min-height:148px}.textbook-reading-card{grid-template-columns:105px minmax(0,1fr);gap:10px}.textbook-reading-card h2{font-size:16px}.textbook-reading-card-actions{grid-column:1 / -1}.textbook-reading-card-actions .btn{flex:1}.textbook-reading-copy h2{font-size:21px}.textbook-reading-copy p{font-size:16px}.textbook-typing-line{font-size:18px}.textbook-reading-catalog-guide{justify-content:flex-start}}
.textbook-reading-sentence-audio{display:flex;align-items:center;gap:8px;margin-top:9px}.textbook-sentence-audio{padding:7px 11px;font-size:12px}.textbook-sentence-audio.is-playing{border-color:#2a9d8f;background:#2a9d8f;color:#fff}.textbook-sentence-audio-missing{color:#bd6b2c;font-size:12px}.textbook-reading-listen-row .textbook-reading-sentence-audio{margin-top:8px}
.textbook-reading-order .textbook-reading-copy p{color:#3f4f69;font-size:20px;font-weight:600;line-height:1.7}
.textbook-reading-order .textbook-order-chip{color:#14213a;font-size:17px;font-weight:600;line-height:1.35}
.textbook-reading-order .textbook-order-chip:hover,.textbook-reading-order .textbook-order-chip.is-selected{color:#3f36b8}
.textbook-reading-order .textbook-order-placeholder{color:#66748c;font-size:15px;font-weight:600}
@media(max-width:620px){.textbook-reading-order .textbook-reading-copy p{font-size:18px}.textbook-reading-order .textbook-order-chip{font-size:16px}}
.textbook-sentence-review-shell .sentence-review-english{max-width:1100px}.textbook-sentence-review-shell .sentence-review-analysis{width:100%}.sentence-analysis-empty{padding:22px;border:1px dashed rgba(176,190,218,.36);border-radius:8px;color:#aebbd0;font-size:15px;text-align:center}