/* 独立的蓝色听力卡片与播放器；不覆盖其他训练页。 */
.listening-page { max-width: 1260px; margin: 0 auto; color: #183354; }
.listening-page button, .listening-page select, .listening-page textarea { font: inherit; }
.listening-page button { cursor: pointer; }
.listening-page button:disabled { opacity: .45; cursor: default; }
.listening-page :focus-visible { outline: 3px solid #4b89e9; outline-offset: 4px; }
.listening-eyebrow { display: block; color: #466daf; font-size: 11px; font-weight: 800; letter-spacing: .13em; }
.listening-hero { position: relative; display: grid; grid-template-columns: 1fr 210px; gap: 32px; align-items: center; padding: 42px; border: 1px solid #cbdcf4; border-radius: 28px; background: radial-gradient(ellipse at 80% 0, #d9eafd, transparent 55%), linear-gradient(135deg, #f7faff, #edf4fd); }
.listening-hero h2 { font-size: clamp(28px, 3.2vw, 42px); line-height: 1.3; letter-spacing: -.035em; margin: 14px 0; color: #143255; }
.listening-hero p { max-width: 640px; color: #536c89; line-height: 1.9; font-size: 14px; }
.listening-hero-tags { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 23px; }
.listening-hero-tags span, .listening-tag { padding: 6px 10px; border-radius: 8px; color: #3b6293; background: #e9f1fd; font-size: 11px; font-weight: 650; }
.listening-hero-tags span { background: rgba(255,255,255,.8); border: 1px solid #d4e3f5; }
.listening-sound-art { display: grid; justify-items: center; gap: 20px; }
.listening-sound-art > span { color: #5377a5; font-size: 9px; letter-spacing: .18em; }
.listening-art-disc { display: grid; place-items: center; width: 150px; height: 150px; border-radius: 50%; background: linear-gradient(135deg, #5289d9, #1756b0); box-shadow: 0 0 0 13px #e4efff, 0 0 0 14px #b8d0ef, 0 15px 35px #709bcd60; }
.listening-art-disc .listening-wave i { background: #fff; width: 4px; }
.listening-library-title { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin: 30px 0 18px; }
.listening-library-title h3 { font-size: 21px; margin: 0 0 6px; }
.listening-library-title p { font-size: 12px; color: #65798e; margin: 0; }
.listening-scene-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 18px; }
.listening-scene-card { display: flex; flex-direction: column; min-width: 0; text-align: left; padding: 24px; border: 1px solid #d9e3f0; border-radius: 22px; background: #fff; color: #1d3757; box-shadow: 0 5px 17px #24466e05; transition: transform .18s, box-shadow .18s, border-color .18s; }
.listening-scene-card:hover { transform: translateY(-4px); border-color: #8eb4e8; box-shadow: 0 12px 27px #30598912; }
.listening-card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.listening-scene-number { width: 40px; height: 40px; display: grid; place-items: center; color: #306fc4; border: 1px solid #d4e4f9; background: #f0f6ff; border-radius: 12px; font-size: 17px; font-weight: 700; }
.listening-scene-card h3 { margin: 0 0 9px; font-size: 18px; line-height: 1.5; }
.listening-scene-card p { margin: 0 0 22px; color: #65798e; font-size: 12px; line-height: 1.8; flex: 1; }
.listening-card-meta { display: flex; gap: 10px; font-size: 11px; color: #6a7e96; }
.listening-card-progress { background: #edf2f8; height: 4px; border-radius: 4px; margin: 17px 0 13px; overflow: hidden; }
.listening-card-progress span { display: block; background: #4281d3; height: 100%; }
.listening-card-bottom { display: flex; justify-content: space-between; gap: 8px; font-size: 10px; color: #718299; line-height: 1.6; }
.listening-card-bottom strong { white-space: nowrap; color: #2b65b7; font-size: 11px; }
.listening-back { border: 0; background: transparent; color: #547298; padding: 8px 0; font-size: 12px !important; margin-bottom: 16px; }
.listening-session-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 16px; margin-bottom: 25px; }
.listening-session-heading h2 { margin: 10px 0; font-size: 30px; line-height: 1.35; }
.listening-session-heading p { margin: 0; color: #617892; font-size: 13px; line-height: 1.7; }
.listening-practice-layout { display: grid; grid-template-columns: 235px minmax(0,1fr); gap: 24px; align-items: start; }
.listening-outline { background: #fff; border: 1px solid #d6e2f1; border-radius: 20px; overflow: hidden; }
.listening-outline-heading { padding: 20px 18px; display: flex; justify-content: space-between; align-items: center; font-size: 13px; border-bottom: 1px solid #e5edf7; }
.listening-outline-heading > span { color: #71869d; font-size: 11px; }
.listening-line-list { padding: 9px; }
.listening-line-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px; margin: 2px 0; border: 1px solid transparent; background: transparent; border-radius: 10px; color: #536d89; text-align: left; font-size: 12px !important; }
/* Center short sentence groups; auto margins collapse for scrollable rails. */
.listening-line-list > .listening-line-item:first-child { margin-inline-start: auto; }
.listening-line-list > .listening-line-item:last-child { margin-inline-end: auto; }
.listening-line-item.active { background: #edf4ff; border-color: #d8e5f8; color: #205dab; }
.listening-line-item:hover { background: #f3f7fc; }
.listening-line-number { font-size: 11px; color: #7d96b3; }
.listening-line-item small { display: block; font-size: 10px; margin-top: 4px; opacity: .85; }
.listening-line-mark { margin-left: auto; color: #4c7ebb; }
.listening-outline-footer { padding: 16px 19px; border-top: 1px solid #e5edf7; font-size: 11px; color: #627c98; line-height: 2; }
.listening-exercise { min-width: 0; border: 1px solid #d6e2f1; background: #fff; border-radius: 24px; padding: 25px 30px; }
.listening-exercise-top { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 11px; color: #637b99; }
.listening-player { text-align: center; padding: 31px 10px 20px; }
.listening-wave { display: inline-flex; align-items: center; gap: 5px; height: 55px; }
.listening-wave i { display: block; width: 5px; height: calc(12px + (var(--i) * 7px)); max-height: 47px; border-radius: 5px; background: #4d86d5; transform: scaleY(.7); }
.listening-wave i:nth-child(2n) { height: 27px; background: #84ade5; }
.listening-wave i:nth-child(3n) { height: 43px; }
.is-playing .listening-wave i { animation: listening-wave 1.1s ease-in-out infinite alternate; animation-delay: calc(var(--i) * -90ms); }
@keyframes listening-wave { from { transform: scaleY(.35); } to { transform: scaleY(1); } }
.listening-player h3 { margin: 13px 0 8px; font-size: 21px; }
.listening-player p { margin: 0 0 22px; font-size: 12px; color: #687e96; }
.listening-button { min-height: 42px; padding: 10px 16px; border: 1px solid #cdddf1; border-radius: 11px; background: #fff; color: #386194; font-size: 12px !important; font-weight: 650 !important; }
.listening-button:hover { background: #f0f6ff; }
.listening-primary { background: #286bc6; border-color: #286bc6; color: white; box-shadow: 0 4px 12px #2763b21c; }
.listening-primary:hover { background: #2059a8; }
.listening-play { min-width: 164px; }
.listening-audio-controls { display: flex; justify-content: center; gap: 25px; margin-top: 19px; }
.listening-audio-controls label { display: flex; align-items: center; gap: 6px; color: #6c809a; font-size: 11px; }
.listening-audio-controls select { color: #375e90; font-size: 11px; padding: 7px; border: 1px solid #dbe6f4; border-radius: 7px; background: #f7faff; }
.listening-audio-status { min-height: 22px; margin: 0 0 15px; color: #5a7190; font-size: 11px; text-align: center; line-height: 1.6; }
.listening-input-label { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 5px; color: #294b76; font-size: 12px; font-weight: 650; margin-bottom: 10px; }
.listening-input-label span { color: #71859c; font-size: 10px; font-weight: 400; }
#listening-answer { display: block; width: 100%; box-sizing: border-box; resize: vertical; padding: 15px; border: 1px solid #cfdded; border-radius: 12px; color: #244567; background: #fafcff; line-height: 1.7; font-size: 15px; min-height: 115px; }
#listening-answer::placeholder { color: #91a1b5; font-size: 12px; }
.listening-answer-actions { display: flex; gap: 9px; flex-wrap: wrap; align-items: center; margin: 13px 0 18px; }
.listening-text-button { border: 0; background: transparent; color: #53749c; font-size: 11px !important; padding: 10px 5px; margin-left: auto; }
.listening-feedback { color: #596f8a; font-size: 12px; line-height: 1.8; }
.listening-feedback:empty { display: none; }
.listening-feedback strong { color: #3a659a; }
.listening-feedback .listening-success { color: #248063; }
.listening-feedback p { margin: 4px 0 15px; }
.listening-transcript { margin-top: 15px; padding: 20px; border: 1px solid #d7e5f6; border-radius: 13px; background: #f3f8ff; }
.listening-transcript p { margin: 10px 0; font-size: 12px; color: #597795; line-height: 1.7; }
.listening-transcript p[lang="en"] { color: #23486f; font-size: 18px; font-weight: 550; }
.listening-transcript small { display: block; font-size: 10px; color: #6e86a1; line-height: 1.7; }
.listening-step-actions { display: flex; justify-content: space-between; gap: 10px; padding-top: 22px; border-top: 1px solid #e7edf6; margin-top: 20px; }
.listening-note { font-size: 10px; line-height: 1.8; color: #6f8298; margin: 20px 0 10px; }
.listening-summary { padding: 54px 35px; text-align: center; border-radius: 27px; background: linear-gradient(140deg,#fff,#eef5ff); border: 1px solid #d4e2f5; }
.listening-summary h2 { font-size: 29px; margin: 18px 0 13px; }
.listening-summary p { font-size: 13px; line-height: 1.9; color: #65809b; max-width: 600px; margin: 12px auto; }
.listening-summary-stats { display: grid; grid-template-columns: repeat(3,1fr); gap: 16px; max-width: 660px; margin: 34px auto; }
.listening-summary-stats div { display: grid; gap: 10px; padding: 24px 12px; border: 1px solid #d9e5f5; background: #fff; border-radius: 17px; }
.listening-summary-stats strong { font-size: 32px; font-weight: 700; color: #2c65ad; }
.listening-summary-stats small { font-size: 13px; color: #859ab2; font-weight: 400; }
.listening-summary-stats span { font-size: 11px; color: #617e9e; }
.listening-summary-actions { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 28px; }
.listening-empty { padding: 60px 25px; text-align: center; color: #617994; background: #fff; border: 1px solid #dce6f4; border-radius: 22px; font-size: 14px; line-height: 2; }
@media (max-width: 1050px) { .listening-scene-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .listening-hero { grid-template-columns: 1fr 150px; padding: 30px; } .listening-practice-layout { grid-template-columns: 190px minmax(0,1fr); gap: 16px; } .listening-exercise { padding: 22px; } }
@media (max-width: 700px) {
  .listening-hero { grid-template-columns: 1fr; padding: 27px 23px; border-radius: 22px; }
  .listening-sound-art { display: none; }
  .listening-hero h2 { font-size: 27px; }
  .listening-library-title > .listening-tag { display: none; }
  .listening-scene-grid { grid-template-columns: 1fr; gap: 13px; }
  .listening-scene-card { padding: 20px; }
  .listening-card-top { margin-bottom: 13px; }
  .listening-practice-layout { grid-template-columns: 1fr; }
  .listening-outline-heading, .listening-outline-footer { display: none; }
  .listening-line-list { display: flex; gap: 4px; overflow-x: auto; padding: 8px; }
  .listening-line-item { width: auto; min-width: 100px; flex-shrink: 0; }
  .listening-line-number, .listening-line-mark { display: none; }
  .listening-session-heading { margin-bottom: 17px; }
  .listening-session-heading h2 { font-size: 25px; }
  .listening-exercise { padding: 19px 17px; }
  .listening-player { padding: 23px 0 18px; }
  .listening-player h3 { font-size: 19px; }
  .listening-answer-actions .listening-text-button { margin-left: 0; }
  .listening-summary { padding: 32px 18px; }
  .listening-summary h2 { font-size: 24px; }
  .listening-summary-stats { gap: 8px; }
  .listening-summary-stats div { padding: 18px 5px; }
  .listening-summary-stats strong { font-size: 27px; }
}
@media (prefers-reduced-motion: reduce) { .listening-page *, .listening-page *::before, .listening-page *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; } }

/* Sentence dictation: a continuous line of words, matching the supplied demo. */
.listening-practice { padding: 28px; border: 1px solid #d6e2f1; border-radius: 24px; background: #f3f7ff; }
.listening-session-toolbar { display: flex; align-items: end; flex-wrap: wrap; gap: 16px; margin-bottom: 20px; }
.listening-session-toolbar label { display: grid; gap: 8px; flex: 1; min-width: 180px; color: #294b76; font-size: 14px; }
.listening-session-toolbar select { width: 100%; min-height: 44px; padding: 10px 12px; border: 1px solid #cfdded; border-radius: 10px; background: #fff; color: #244567; font-size: 15px; }
.listening-practice-layout { display: flex; flex-direction: column; gap: 12px; }
.listening-outline { width: 100%; border: 0; border-radius: 0; background: transparent; }
.listening-outline-heading, .listening-outline-footer, .listening-line-number, .listening-line-mark { display: none; }
.listening-sentence-reel { display: grid; grid-template-columns: 44px minmax(0,1fr) 44px; align-items: center; gap: 6px; max-width: 620px; margin-inline: auto; }
.listening-line-list { display: flex; gap: 8px; min-width: 0; overflow-x: auto; padding: 5px 3px; scrollbar-width: none; scroll-snap-type: x proximity; overscroll-behavior-x: contain; }
.listening-line-list::-webkit-scrollbar { display: none; }
.listening-line-item { width: 88px; min-width: 88px; flex: 0 0 88px; margin: 0; padding: 12px 4px; text-align: center; justify-content: center; scroll-snap-align: center; transition: background-color 180ms ease-out, border-color 180ms ease-out, color 180ms ease-out; }
.listening-line-item.active { background: #e5edff; border-color: #a9bfee; color: #244ca0; }
.listening-line-item small { font-size: 11px; opacity: 1; color: #506581; }
.listening-reel-arrow { display: grid; place-items: center; width: 44px; height: 44px; padding: 10px; border: 0; border-radius: 50%; background: transparent; color: #4564dc; cursor: pointer; }
.listening-reel-arrow svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.listening-reel-arrow:hover:not(:disabled) { background: #e5edff; }
.listening-reel-arrow:disabled { color: #abb9d0; cursor: default; }
.listening-exercise.is-changing-sentence { animation: listening-sentence-enter 240ms cubic-bezier(.16,1,.3,1); }
@keyframes listening-sentence-enter { from { transform: translateX(var(--sentence-direction, 18px)); opacity: .75; } to { transform: translateX(0); opacity: 1; } }
.listening-exercise { width: 100%; border-radius: 16px; padding: 24px 30px 18px; }
.listening-exercise-top { font-size: 13px; }
.listening-page .listening-player { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: 12px 24px; padding: 22px 0 10px; }
.listening-audio-controls { margin: 0; gap: 16px; }
.listening-page .listening-audio-controls label, .listening-page .listening-audio-controls select { font-size: 13px; color: #506581; }
.listening-audio-status { margin: 0; color: #506581; font-size: 12px; }
.listening-sentence-stage { --sentence-font-size: clamp(23px, 2.3vw, 30px); --sentence-word-gap: 22px 10px; min-height: 248px; }
/* Both states keep the prompt and English line on the same reading axis. */
.listening-sentence-focus { display: grid; grid-template-rows: minmax(32px, auto) auto; align-content: start; gap: 16px; width: min(100%, 860px); margin-inline: auto; padding: 24px 0 8px; box-sizing: border-box; text-align: center; }
.listening-sentence-prompt { color: #526581; font-size: 19px; line-height: 1.65; margin: 0; }
#listening-answer { padding: 0; margin: 0; border: 0; background: transparent; width: 100%; min-height: 0; min-inline-size: 0; }
.listening-word-grid, .listening-reading-sentence { display: flex; flex-wrap: wrap; justify-content: center; align-items: start; gap: var(--sentence-word-gap); }
.listening-word { display: inline-flex; flex-direction: column; position: relative; width: var(--word-width); max-width: 100%; font-size: var(--sentence-font-size); line-height: 1.4; }
#listening-answer .listening-word-input { box-sizing: border-box; width: 100%; min-width: 0; min-height: 44px; border: 0; border-bottom: 2px solid #c8d2e3; border-radius: 0; background: transparent; color: #33445f; font-family: inherit; font-size: inherit; font-weight: 500; line-height: 1.4; padding: 4px 0; text-align: center; caret-color: #4564dc; box-shadow: none; }
#listening-answer .listening-word-input:focus { outline: none; border-bottom-color: #4564dc; color: #4564dc; box-shadow: 0 2px 0 #4564dc; }
#listening-answer .is-correct input { color: #226f57; border-bottom-color: #479d7e; }
#listening-answer .is-incorrect input { color: #be4040; border-bottom-color: #d56c6c; }
/* Read the sentence first; inspect one word without fragmenting the phrase. */
.listening-annotations { width: min(100%, 860px); margin-inline: auto; padding: 0; text-align: center; }
.listening-reading-sentence { font-size: var(--sentence-font-size); line-height: 1.4; color: #1e3354; }
.listening-page .listening-annotation-word { display: inline-flex; justify-content: center; align-items: center; box-sizing: border-box; width: var(--word-width); max-width: 100%; min-height: 44px; padding: 4px 0; margin: 0; border: 0; border-bottom: 2px solid transparent; border-radius: 5px; background: transparent; color: inherit; font: inherit; font-weight: 500; line-height: inherit; cursor: pointer; box-shadow: none; white-space: nowrap; }
.listening-page .listening-annotation-word:hover { background: #f1f5fc; transform: none; }
.listening-page .listening-annotation-word[aria-pressed="true"] { background: #eaf0ff; color: #3557bf; text-decoration: underline; text-decoration-color: #8fa8e6; text-underline-offset: 8px; text-decoration-thickness: 2px; }
.listening-word-notes { width: min(100%, 720px); margin-inline: auto; padding: 8px 0; }
.listening-word-note { display: flex; flex-wrap: wrap; justify-content: center; align-items: baseline; gap: 4px 16px; }
.listening-word-note[hidden] { display: none; }
.listening-word-note > strong { font-size: 16px; line-height: 24px; color: #3557bf; overflow-wrap: anywhere; }
.listening-word-note dl { display: flex; justify-content: center; flex-wrap: wrap; gap: 4px 16px; margin: 0; }
.listening-word-note dl > div { min-width: 0; }
.listening-word-note dt { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.listening-word-note dd { margin: 0; color: #526581; font-size: 14px; line-height: 24px; overflow-wrap: anywhere; }
.listening-word-note > span { font-size: 14px; color: #526581; }
.listening-syntax { margin-top: 8px; display: flex; justify-content: center; align-items: baseline; flex-wrap: wrap; gap: 4px 16px; }
.listening-syntax h3 { margin: 0; font-size: 12px; line-height: 24px; font-weight: 500; color: #526581; }
.listening-syntax ol { display: flex; justify-content: center; flex-wrap: wrap; gap: 4px 16px; list-style: none; padding: 0; margin: 0; }
.listening-syntax li { display: flex; align-items: baseline; gap: 6px; max-width: 100%; }
.listening-syntax li span { flex-shrink: 0; font-size: 12px; line-height: 24px; color: #526581; }
.listening-syntax li strong { font-size: 14px; font-weight: 500; line-height: 24px; color: #243e68; overflow-wrap: anywhere; }
.listening-syntax li.is-active span { color: #3557bf; font-weight: 650; }
.listening-auto-advance { display: flex; justify-content: center; align-items: center; gap: 12px; margin-top: 0; font-size: 12px; color: #526581; }
.listening-auto-advance .listening-text-button { min-height: 44px; margin: 0; }
.listening-auto-advance[hidden] { display: none; }
.listening-feedback { text-align: center; margin-top: 22px; font-size: 13px; }
.listening-feedback:empty, .listening-feedback:has(> .listening-sr-only) { margin: 0; }
.listening-feedback p { margin-bottom: 0; }
.listening-input-help { text-align: center; margin: 12px 0; font-size: 12px; line-height: 1.9; color: #506581; }
.listening-input-help > span { margin-inline: 8px; }
.listening-input-help kbd { font: inherit; padding: 2px 5px; border: 1px solid #d4ddeb; border-radius: 4px; background: #f7f9fc; }
.listening-answer-actions { justify-content: center; margin: 16px 0 20px; gap: 12px; }
.listening-answer-actions .listening-text-button { margin-left: 0; }
.listening-page .listening-button { min-height: 44px; font-size: 14px !important; }
.listening-page .listening-primary { background: #4564dc; border-color: #4564dc; box-shadow: none; }
.listening-page .listening-primary:hover { background: #3454c9; }
.listening-page .listening-note { color: #506581; font-size: 12px; }
.listening-step-actions { padding-top: 16px; margin-top: 0; }
.listening-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.listening-page ::selection { background: #dbe5ff; color: #193c6a; }
.listening-page :is(button, select):focus-visible { outline: 2px solid #4063d8; outline-offset: 3px; }
@media (max-width: 700px) {
  .listening-practice { padding: 16px 12px; border-radius: 18px; }
  .listening-session-toolbar { gap: 12px; }
  .listening-exercise { padding: 18px 16px 16px; }
  .listening-sentence-stage { --sentence-font-size: 24px; --sentence-word-gap: 20px 8px; }
  .listening-sentence-prompt { font-size: 17px; }
  .listening-answer-actions > button { flex: 1 1 auto; }
  .listening-input-help > span { margin-inline: 2px; }
}