:root{font-family:Inter,"PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:#172747;background:#f3f6fc;font-synthesis:none;--blue:#174bdf;--muted:#66738c;--border:#e1e7f0}*{box-sizing:border-box}body{margin:0}button,input,select,textarea{font:inherit}button,a,input,select,textarea{-webkit-tap-highlight-color:transparent}button{cursor:pointer}button:disabled{opacity:.4;cursor:not-allowed}button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:3px solid #83a3ff;outline-offset:4px}button{transition:background .18s,transform .18s}button:active:not(:disabled){transform:translateY(1px)}[hidden]{display:none!important}.header{padding:22px 5%;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);background:#fff}.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#142641;font-size:21px;font-weight:750;letter-spacing:1px}.brand small{display:block;font-size:10px;letter-spacing:2px;font-weight:650;margin-top:3px}.brand-icon{position:relative;display:grid;place-items:center;width:46px;height:46px;border-radius:13px;background:var(--blue);color:#fff;font-size:23px;letter-spacing:-2px}.brand-icon span{position:absolute;font-size:14px;right:5px;top:1px}.header-right{display:flex;gap:20px;align-items:center}.class-label{font-size:14px;color:var(--muted);padding-right:20px;border-right:1px solid var(--border)}main{max-width:1300px;margin:auto;padding:42px 42px 30px}.page-heading{display:flex;align-items:flex-end;justify-content:space-between;margin-bottom:30px;gap:24px}.eyebrow{font-size:12px;letter-spacing:2px;font-weight:750;color:var(--blue);margin:0 0 13px}h1{font-size:clamp(26px,2.4vw,36px);letter-spacing:-1px;line-height:1.45;margin:0;font-weight:760}.intro{color:var(--muted);margin:10px 0 0;font-size:16px}.mobile-break{display:none}.step-label{font-size:13px;white-space:nowrap;color:var(--blue);padding-bottom:5px}.step-label span{color:#79849a;margin-left:8px}.workspace{display:grid;grid-template-columns:1.1fr 1fr;gap:24px;align-items:stretch}.card{background:#fff;border:1px solid var(--border);border-radius:20px;padding:26px;box-shadow:0 7px 25px #253a6604}.card-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:22px}h2{font-size:19px;font-weight:720;line-height:1.5;margin:0;display:flex;align-items:center;gap:10px}.section-number{font-size:12px;background:#edf2ff;color:var(--blue);border-radius:7px;padding:4px 7px;letter-spacing:.5px}.badge{padding:7px 12px;background:#edf2ff;color:#2552bd;border-radius:7px;font-size:13px;white-space:nowrap}.word-card{display:flex;flex-direction:column}.input-label{font-size:14px;color:#526079;margin-bottom:13px}textarea{resize:vertical;width:100%;flex:1;min-height:320px;border:1px solid #dce4f0;background:#f9fbfe;border-radius:12px;padding:18px 20px;line-height:2;font-size:17px;color:#24385b}textarea::placeholder{color:#93a0b5}.input-footer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:12px 0 24px;font-size:12px;color:var(--muted)}.text-button{background:none;border:0;color:var(--blue);padding:4px 0;font-size:14px;font-weight:600;white-space:nowrap}.text-button:hover{text-decoration:underline}.example-bar{border-top:1px solid var(--border);padding-top:20px;display:flex;gap:12px;justify-content:space-between;align-items:center;color:var(--muted);font-size:14px}.validation{font-size:13px;color:#a55b10;margin:10px 0 0}.validation:empty{display:none}.right-column{display:flex;flex-direction:column;gap:18px}.settings{padding-bottom:20px}fieldset{border:0;padding:0;margin:0 0 21px}legend{font-size:14px;margin-bottom:10px;padding:0}.segmented{display:flex;gap:10px}.segmented label{flex:1;position:relative}.segmented input{position:absolute;opacity:0;width:100%;height:100%;margin:0;cursor:pointer}.segmented span{display:block;border:1px solid var(--border);border-radius:10px;padding:12px 14px;font-size:15px}.segmented small{color:var(--muted);margin-left:10px;font-size:12px}.segmented input:checked+span{background:#eef3ff;border-color:#638afa;color:#1649cc;box-shadow:inset 0 0 0 1px #638afa}.segmented input:focus-visible+span{outline:3px solid #83a3ff;outline-offset:3px}.setting-grid{display:grid;grid-template-columns:1fr 1fr;gap:17px 18px}.setting-grid label{font-size:14px;display:flex;flex-direction:column;gap:8px}select{color:#283957;padding:10px 11px;border:1px solid #dce3ee;border-radius:8px;background:#fff;width:100%;font-size:14px;min-height:42px}.interval-label{display:flex;justify-content:space-between;align-items:center;margin-top:22px;font-size:14px}output{color:var(--blue);font-weight:700;background:#edf2ff;padding:3px 8px;border-radius:5px}input[type=range]{width:100%;accent-color:var(--blue);margin:16px 0 5px;cursor:pointer;height:16px}.range-labels{display:flex;justify-content:space-between;color:#7a879a;font-size:12px}.voice-test{margin-top:19px;padding-top:15px;border-top:1px solid var(--border);display:flex;gap:12px;align-items:center}.voice-test>span{font-size:12px;color:var(--muted);line-height:1.6}.button{border:0;border-radius:10px;font-size:14px;font-weight:650;padding:12px 17px;line-height:1.5;display:inline-flex;align-items:center;justify-content:center;gap:9px}.primary{background:var(--blue);color:#fff;box-shadow:0 4px 10px #174bdf1a}.primary:hover{background:#103dbb}.secondary{background:#eef2f9;color:#344969}.secondary:hover{background:#e0e8f5}.subtle{background:transparent;color:#4d607f;box-shadow:inset 0 0 0 1px #dce4ef}.subtle:hover{background:#f2f5fa}.start-card{background:#e7eeff;border:1px solid #d8e3ff;border-radius:17px;padding:20px;display:flex;align-items:center;justify-content:space-between;gap:18px}.start-card>div{display:flex;align-items:center;gap:11px}.ready-mark{display:grid;place-items:center;background:#fff;color:var(--blue);width:31px;height:31px;border-radius:50%;flex-shrink:0}.start-card p{margin:0;color:#264676;font-size:14px;font-weight:650}.start-card small{display:block;font-size:12px;font-weight:400;color:#5b7094;margin-top:6px}.start-card button{white-space:nowrap}
.estimate-note{margin:0;color:#264676;font-size:12.5px;font-weight:500;background:#fff;border:1px dashed #c3d4f7;border-radius:9px;padding:5px 10px;white-space:nowrap}
.estimate-note.warn{color:#a4560d;background:#fff6e8;border-color:#f0c88a}
.checkpoint-list{list-style:none;padding:0;margin:18px 0 0;max-height:46vh;overflow:auto}
.checkpoint-list li{display:flex;align-items:baseline;gap:12px;padding:11px 0;border-bottom:1px solid var(--border)}
.checkpoint-list li:last-child{border-bottom:0}
.wrong-due-bar{display:flex;align-items:center;justify-content:space-between;gap:12px;background:#fff6e8;border:1px solid #f0c88a;border-radius:11px;padding:10px 14px;margin-top:12px}
.wrong-due-text{font-size:13px;color:#854f0b;font-weight:500}
.wrong-list{margin-top:16px;max-height:44vh;overflow:auto}
.wrong-section-head{display:flex;align-items:baseline;justify-content:space-between;gap:10px;border-bottom:1px solid var(--border);padding-bottom:8px;margin-bottom:4px}
.wrong-section-head h3{margin:0;font-size:13px;font-weight:500;color:#233b64}
.wrong-section-head span{font-size:12px;color:var(--muted)}
.wrong-row{display:flex;align-items:center;gap:10px;padding:10px 2px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.wrong-row:last-child{border-bottom:0}
.wrong-row b{font-size:15px;color:#233b64;min-width:96px}
.wrong-row.is-due b{color:#a4560d}
.wrong-meaning{font-size:13px;color:var(--muted);flex:1;min-width:80px;overflow-wrap:anywhere}
.wrong-meta{font-size:12px;color:#8794ac;white-space:nowrap}
.wrong-row.is-due .wrong-meta{color:#ba7517}
.wrong-mark{font-size:12.5px;padding:2px 0;color:#8794ac}
.wrong-mark:hover{color:var(--blue)}
.wrong-mark.is-on{color:#a32d2d;font-weight:500}
.checkpoint-list b{font-size:17px;color:#233b64;overflow-wrap:anywhere}
.checkpoint-list .answer-meaning{font-size:14px;color:var(--muted);margin-top:4px;display:block}.footnote{font-size:12px;color:#75829a;line-height:1.9;margin:22px 0 0}footer{max-width:1216px;padding:20px 0 25px;border-top:1px solid var(--border);margin:0 auto;display:flex;justify-content:space-between;font-size:12px;color:#8190a6}.session-top{display:flex;justify-content:space-between;gap:20px;align-items:center;margin-bottom:26px}.session-card{background:#fff;border:1px solid var(--border);border-radius:24px;padding:25px 42px 32px;text-align:center}.session-meta{display:flex;justify-content:space-between;gap:15px;align-items:center;font-size:14px;color:var(--muted)}.listening-orb{width:220px;height:220px;margin:28px auto 24px;display:flex;align-items:center;justify-content:center;flex-direction:column;border:1px solid #dce5ff;border-radius:50%;box-shadow:0 0 0 15px #f4f7ff,0 0 0 16px #edf2fe;background:#f9fbff;gap:7px}.listening-orb>span{font-size:20px;color:#627594}.listening-orb strong{font-size:60px;color:#183fb1;line-height:1.3;font-weight:650;font-variant-numeric:tabular-nums;margin:0 4px}.listening-orb small{color:#7483a0;font-size:14px}.wave{height:25px;display:flex;align-items:center;gap:5px}.wave i{width:4px;height:10px;background:#4475f2;border-radius:3px}.wave i:nth-child(2),.wave i:nth-child(4){height:17px}.wave i:nth-child(3){height:25px}.speaking .wave i{animation:wave .75s infinite alternate}.speaking .wave i:nth-child(2n){animation-delay:-.3s}.speaking .wave i:nth-child(3){animation-delay:-.55s}@keyframes wave{to{transform:scaleY(.35)}}.session-card h2{justify-content:center;font-size:28px;margin-top:28px}.session-card>p{color:var(--muted);font-size:16px;line-height:1.7;margin-top:10px}.progress-track{margin:26px auto;max-width:650px;height:6px;background:#edf1f8;border-radius:5px;overflow:hidden}.progress-track>div{height:100%;background:var(--blue);width:0;transition:width .4s}.session-controls{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.session-controls .primary{min-width:145px}.session-card .keyboard-note{font-size:12px;margin:24px 0 0;color:#8290a5}.complete-card{text-align:center;padding:45px 0 32px}.complete-icon{display:grid;place-items:center;width:70px;height:70px;background:#e4edff;color:var(--blue);border:1px solid #cbdcff;border-radius:50%;font-size:31px;margin:0 auto 22px}.complete-card>p:not(.eyebrow){color:var(--muted);line-height:1.8}.complete-actions{display:flex;justify-content:center;gap:12px;margin-top:27px;flex-wrap:wrap}.answer-hint{color:var(--muted);font-size:14px}.answer-grid{list-style:none;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:0 28px}.answer-grid li{display:flex;align-items:center;gap:13px;border-bottom:1px solid var(--border);padding:18px 0;min-width:0}.answer-number{font-size:13px;color:#8794ac;font-variant-numeric:tabular-nums;min-width:22px}.answer-word{font-size:18px;font-weight:650;background:none;border:0;text-align:left;color:#233b64;padding:0;overflow-wrap:anywhere}.answer-word:hover{color:var(--blue)}.answer-meaning{font-size:14px;color:var(--muted);margin-top:6px;overflow-wrap:anywhere}.message{position:fixed;bottom:25px;left:50%;transform:translateX(-50%);padding:16px 22px;max-width:min(560px,90vw);background:#203456;color:white;border-radius:12px;box-shadow:0 8px 40px #14243a30;z-index:10;line-height:1.7;font-size:14px}dialog{border:1px solid var(--border);border-radius:20px;max-width:460px;width:calc(100% - 32px);padding:28px;color:#243653}dialog::backdrop{background:#172c5266;backdrop-filter:blur(3px)}dialog p{color:var(--muted);line-height:1.8;font-size:16px}.dialog-actions{display:flex;justify-content:flex-end;gap:12px;margin-top:24px}:fullscreen body{overflow:auto}
@media(min-width:1500px){main{padding-top:55px}}@media(max-width:1000px){main{padding:30px 24px}.step-label{display:none}.workspace{grid-template-columns:1fr 1fr;gap:18px}.card{padding:22px}.start-card{flex-wrap:wrap}.start-card button{width:100%}.segmented small{display:block;margin:5px 0 0}.answer-grid{grid-template-columns:repeat(2,1fr)}footer{margin:0 24px}.header{padding:18px 24px}}@media(max-width:720px){.header{padding:16px 20px}.brand{font-size:18px}.brand-icon{width:40px;height:40px}.brand small{font-size:9px}.class-label{display:none}.header-right{gap:0}.header-right button{font-size:12px;padding:10px}.workspace{grid-template-columns:1fr}.page-heading{margin-bottom:24px}main{padding:28px 18px}.mobile-break{display:block}h1{font-size:27px;letter-spacing:0}.card{padding:20px;border-radius:16px}textarea{min-height:250px}.input-footer{align-items:flex-start}.input-footer>span{max-width:240px;line-height:1.7}.start-card{flex-wrap:nowrap}.start-card button{width:auto}.start-card small{max-width:150px;line-height:1.6}.ready-mark{display:none}.footnote{line-height:1.9}.session-top{align-items:flex-start}.session-top .button{font-size:12px;padding:10px}.session-top h1{font-size:25px}.session-card{padding:20px 16px}.session-meta{font-size:12px;align-items:flex-start}.session-meta>span:last-child{max-width:140px;line-height:1.7}.session-controls{display:grid;grid-template-columns:1fr 1fr;gap:10px}.session-controls .primary{min-width:0}.session-card .keyboard-note{display:none}.listening-orb{margin-top:40px}.answer-grid{grid-template-columns:1fr}.complete-actions{flex-direction:column}.complete-card{padding-top:25px}footer{gap:15px;font-size:12px}.example-bar{font-size:13px;gap:8px}}@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}}

/* Local edition: sentence preparation and classroom cloze. */
.brand small{font-size:12px;letter-spacing:0;font-weight:500}.header-right{gap:12px}.local-status{font-size:13px;color:#52698c;line-height:1.6;margin:12px 0 0}.file-actions{display:flex;gap:18px;margin:0 0 18px;flex-wrap:wrap}.engine-label{display:block;font-size:14px;margin-bottom:18px}.engine-label select{margin-top:8px}.mode-note{color:#637492;line-height:1.8;font-size:14px}.sentence-panel{margin-top:24px}.generation-controls{display:flex;align-items:flex-end;gap:14px;flex-wrap:wrap}.generation-controls label{display:flex;flex-direction:column;gap:8px;font-size:14px;flex:1;min-width:180px}.generation-controls .level-detail{flex:1.5}.generation-controls input,#ai-dialog input{border:1px solid #dce3ee;border-radius:8px;padding:11px 12px;font-size:14px;min-height:43px;width:100%;background:#fff;color:#233656}.sentence-row{display:grid;grid-template-columns:170px 1fr;gap:20px;border-top:1px solid var(--border);padding:22px 0}
.sentence-row.is-failed{background:#fff8ef;box-shadow:inset 3px 0 0 #e08a2c}
.failed-flag{display:inline-block;margin-top:8px;font-size:11.5px;color:#a32d2d;background:#fcebeb;border:1px solid #f7c1c1;border-radius:6px;padding:2px 7px}
.failed-banner{margin:12px 0;padding:14px 16px;border:1px solid #f0c88a;background:#fff6e8;border-radius:12px}
.failed-title{margin:0 0 8px;font-size:13px;color:#a4560d}
.failed-list{margin:0 0 12px;padding:0;list-style:none;display:grid;gap:6px}
.failed-list li{font-size:12.5px;color:#5b7094;line-height:1.6}
.failed-list b{color:#233b64}
.failed-actions{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
#generation-status.is-error{color:#a32d2d}.sentence-target strong{font-size:18px;overflow-wrap:anywhere}.sentence-target small{display:block;color:var(--muted);font-size:14px;line-height:1.6;margin-top:6px}.sentence-fields label{display:block;font-size:14px;margin-bottom:7px;color:#566882}.sentence-fields textarea{min-height:80px;line-height:1.7;font-size:16px;resize:vertical;padding:12px 15px;margin-bottom:8px}.sentence-fields textarea.translation-input{min-height:54px;font-size:14px}.sentence-preview{font-size:16px;color:#2c559a;line-height:1.8;background:#f1f5ff;border-radius:8px;padding:10px 14px;overflow-wrap:anywhere}.sentence-preview.invalid{color:#a25a12;background:#fff7e9}.sentence-actions{display:flex;gap:18px;align-items:center;margin-top:9px}.cloze-display{font-family:Arial,system-ui,sans-serif;max-width:950px;font-size:clamp(28px,3.5vw,48px);line-height:1.8;margin:28px auto 20px;color:#183b83;font-weight:550;overflow-wrap:anywhere}.cloze-display .blank{display:inline-block;min-width:3.8em;border-bottom:3px solid #4773e4;vertical-align:baseline;height:1.15em;margin:0 .12em}.cloze-session .listening-orb{width:130px;height:130px;margin:20px auto;box-shadow:0 0 0 8px #f4f7ff}.cloze-session .listening-orb strong{font-size:38px}.cloze-session .listening-orb>span{font-size:16px}.cloze-session .wave{display:none}.cloze-session h2{font-size:22px}.cloze-session .progress-track{margin:20px auto}.cloze-session .session-controls{margin-top:18px}.answer-sentence{font-size:16px;line-height:1.8;color:#2f4670;margin-top:10px}.answer-sentence mark{background:#e4edff;color:#1347ce;font-weight:700;padding:1px 3px;border-radius:3px}.answers-cloze{grid-template-columns:1fr!important}.answers-cloze li{align-items:flex-start}#ai-dialog{max-width:590px;max-height:90vh;overflow:auto}#ai-dialog label{display:block;font-size:14px;line-height:1.7;margin:20px 0 8px}#ai-dialog input{margin-top:8px}#ai-dialog .key-help{font-size:13px;margin:8px 0;line-height:1.8}a{color:#174bdf}.cloze-display .blank::before{content:"\00a0"}
@media(max-width:720px){.header-right .button{font-size:12px;padding:8px}.header-right{gap:6px}.brand small{font-size:10px}.sentence-row{grid-template-columns:1fr;gap:12px}.sentence-target{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}.sentence-target small{display:inline}.generation-controls{align-items:stretch}.generation-controls .button{width:100%}.cloze-display{font-size:29px}.sentence-panel .card-top{flex-wrap:wrap}}

.upload-button{margin:0 0 20px;background:#eef3ff;color:#174bdf;border:1px dashed #94b0fa;width:100%;padding:15px}.upload-button:hover{background:#e3edff}#ocr-dialog{max-width:980px;max-height:90vh;overflow:auto;width:calc(100% - 32px)}.ocr-toolbar{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:15px 0}.ocr-toolbar label{cursor:pointer}#ocr-files{max-width:100%;font-size:14px}#ocr-dialog .key-help{font-size:13px;line-height:1.7;color:#66738c}.ocr-file{padding:12px 14px;border:1px solid var(--border);border-radius:9px;margin:10px 0;font-size:14px;overflow-wrap:anywhere}.ocr-file label{display:flex;align-items:center;gap:10px;margin-top:10px}.ocr-file input,.ocr-row input[type=text]{padding:9px 10px;font-size:16px;border:1px solid #dce3ee;border-radius:7px;min-width:0;width:100%;color:#233b64}.ocr-file input{max-width:240px}.ocr-row{display:grid;grid-template-columns:25px 1fr 1fr;gap:12px;border-top:1px solid var(--border);padding:14px 0;align-items:start}.ocr-row label{display:grid;gap:5px;font-size:13px;color:var(--muted)}.ocr-row input[type=checkbox]{width:18px;height:18px;accent-color:#174bdf;margin-top:29px}.ocr-row small{grid-column:2 / 4;font-size:12px;color:#7a879a;overflow-wrap:anywhere}.ocr-notes{font-size:14px;line-height:1.8;color:#905819;padding-left:22px;max-height:200px;overflow:auto}.ocr-import-footer{display:flex;gap:16px;align-items:center;justify-content:space-between;border-top:1px solid var(--border);padding-top:20px;font-size:14px;color:#66738c}#ocr-review{margin-top:28px}@media(max-width:640px){.ocr-row{grid-template-columns:25px 1fr}.ocr-row label:last-of-type{grid-column:2}.ocr-row small{grid-column:2}.ocr-import-footer{align-items:stretch;flex-direction:column}}

.dialog-message{padding:12px 15px;background:#fff3df;border:1px solid #efd3a7;border-radius:9px;color:#824a0c!important;font-size:14px!important;line-height:1.8}

#ai-dialog .remember-row{display:flex;align-items:center;gap:.5rem;margin:.25rem 0 .75rem;font-size:.92rem;cursor:pointer;}
#ai-dialog .remember-row input[type="checkbox"]{width:auto;margin:0;accent-color:#174bdf;}

#account-dialog .cloud-title{margin:22px 0 8px;font-size:15px;font-weight:600;}
#account-dialog .cloud-save-row{display:flex;gap:8px;align-items:center;}
#account-dialog .cloud-save-row input{flex:1;margin:0;}
#account-dialog .cloud-save-row .button{white-space:nowrap;}
#account-dialog .cloud-lists{list-style:none;margin:14px 0 0;padding:0;max-height:260px;overflow:auto;}
#account-dialog .cloud-lists li{display:flex;align-items:center;gap:8px;padding:9px 0;border-bottom:1px solid var(--border);font-size:14px;}
#account-dialog .cloud-lists li:last-child{border-bottom:0;}
#account-dialog .cloud-lists .cloud-list-name{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
#account-dialog .cloud-lists .cloud-list-meta{color:#66738c;font-size:12px;white-space:nowrap;}
#account-dialog .cloud-lists .text-button{padding:2px 4px;font-size:13px;}
#account-dialog #account-member p.key-help{margin-bottom:12px;}

/* ==========================================================
   视觉增强层 v2 (2026-09-15)
   只增强观感，不改动结构与类名；删除本段即可回到旧样式。
   约束：保持投屏所需的高对比度与大字号，不做弱化文字的处理。
   ========================================================== */
:root{--ink:#16233f;--line:#e4eaf3;--ring:0 0 0 4px rgba(23,75,223,.15);
  --shadow-1:0 1px 2px rgba(19,42,94,.05),0 2px 10px -3px rgba(19,42,94,.06);
  --shadow-2:0 2px 6px rgba(19,42,94,.04),0 16px 38px -14px rgba(19,42,94,.18);
  --shadow-3:0 6px 12px rgba(19,42,94,.06),0 30px 64px -20px rgba(19,42,94,.24)}
body{color:var(--ink);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;
  background:radial-gradient(880px 460px at 10% -10%,rgba(59,110,255,.14),transparent 62%),
             radial-gradient(720px 400px at 94% 2%,rgba(126,87,255,.10),transparent 60%),#f4f7fd;
  background-attachment:fixed}
.header{position:sticky;top:0;z-index:30;background:rgba(255,255,255,.86);
  backdrop-filter:saturate(180%) blur(14px);-webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid rgba(228,234,243,.9);box-shadow:0 10px 30px -22px rgba(19,42,94,.5)}
.brand-icon{background:linear-gradient(140deg,#4a78f7,#133fc4);
  box-shadow:0 10px 22px -8px rgba(23,75,223,.6),inset 0 1px 0 rgba(255,255,255,.32)}
h1{letter-spacing:-1.2px}
.intro{color:#5d6b85}
.card{border-radius:22px;border-color:rgba(228,234,243,.95);box-shadow:var(--shadow-2);
  transition:box-shadow .28s ease,transform .28s ease}
.word-card:hover,.settings:hover{box-shadow:var(--shadow-3);transform:translateY(-2px)}
.card-top{margin-bottom:20px;padding-bottom:16px;border-bottom:1px solid #f1f5fb}
.section-number{background:linear-gradient(135deg,#eef3ff,#e3ecff);color:#2a56cf;border-radius:8px;font-weight:700}
.badge{background:linear-gradient(135deg,#eef3ff,#e6eeff);color:#254fb8;border-radius:9px;font-weight:600;
  box-shadow:inset 0 0 0 1px #dbe5fb}
.button{border-radius:12px;letter-spacing:.2px;
  transition:background .18s ease,color .18s ease,box-shadow .18s ease,transform .18s ease}
.primary{background:linear-gradient(135deg,#3f6ff7,#174bdf 60%,#123ec0);
  box-shadow:0 8px 18px -8px rgba(23,75,223,.65),inset 0 1px 0 rgba(255,255,255,.25)}
.primary:hover{background:linear-gradient(135deg,#3162f0,#0f37ad);transform:translateY(-1px);
  box-shadow:0 12px 26px -10px rgba(23,75,223,.7),inset 0 1px 0 rgba(255,255,255,.25)}
.primary:active{transform:translateY(0)}
.secondary{background:linear-gradient(180deg,#fff,#f3f6fc);color:#31445f;
  box-shadow:0 1px 2px rgba(19,42,94,.06),inset 0 0 0 1px #e3eaf5}
.secondary:hover{background:linear-gradient(180deg,#fff,#eaf0f9);
  box-shadow:0 4px 12px -6px rgba(19,42,94,.25),inset 0 0 0 1px #d7e1f0}
.subtle{border-radius:11px;background:rgba(255,255,255,.72);color:#4b5f7f;box-shadow:inset 0 0 0 1px #e0e7f2}
.subtle:hover{background:#fff;color:#22375b;box-shadow:inset 0 0 0 1px #c8d6ef,0 6px 16px -8px rgba(19,42,94,.35)}
.text-button{border-radius:6px;padding:3px 6px;transition:background .18s ease,color .18s ease}
.text-button:hover{text-decoration:none;background:#eef3ff}
button:focus-visible,a:focus-visible,input:focus-visible,textarea:focus-visible,select:focus-visible{outline:0;box-shadow:var(--ring)}
textarea{border-radius:14px;border:1px solid #e0e7f3;background:linear-gradient(180deg,#fbfcff,#f6f9fe);
  box-shadow:inset 0 1px 2px rgba(19,42,94,.04);transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
textarea:focus{border-color:#89a8ff;background:#fff;box-shadow:0 0 0 4px rgba(23,75,223,.12)}
select{border-radius:11px;border:1px solid #e0e7f3;box-shadow:0 1px 2px rgba(19,42,94,.04);
  transition:border-color .2s ease,box-shadow .2s ease}
select:focus{border-color:#89a8ff;box-shadow:var(--ring)}
.segmented{gap:12px}
.segmented span{border-radius:12px;border:1px solid #e4eaf3;background:#fff;
  box-shadow:0 1px 2px rgba(19,42,94,.04);transition:border-color .2s ease,background .2s ease,box-shadow .2s ease,color .2s ease}
.segmented label:hover span{border-color:#c3d4f8;background:#fafcff}
.segmented input:checked+span{background:linear-gradient(135deg,#eef4ff,#e2ecff);border-color:#7d9cf7;color:#16409f;
  font-weight:650;box-shadow:inset 0 0 0 1px #7d9cf7,0 4px 12px -6px rgba(23,75,223,.5)}
.upload-button{border-radius:14px;border:1.5px dashed #9fb8fb;color:#1a4ad8;font-weight:650;box-shadow:none;
  background:linear-gradient(135deg,#f2f6ff,#e9f0ff);transition:background .2s ease,border-color .2s ease,transform .2s ease}
.upload-button:hover{background:linear-gradient(135deg,#e8f0ff,#dde8ff);border-color:#7d9cf7;transform:translateY(-1px)}
.start-card{border-radius:20px;background:linear-gradient(135deg,#eaf0ff,#e3ecff 60%,#dfe7ff);
  border:1px solid #d3e0ff;box-shadow:0 14px 34px -20px rgba(23,75,223,.55)}
.ready-mark{width:34px;height:34px;box-shadow:0 4px 10px -4px rgba(23,75,223,.6)}
.session-card{border-radius:26px;border-color:rgba(228,234,243,.95);box-shadow:var(--shadow-3)}
.listening-orb{background:radial-gradient(circle at 50% 34%,#fff,#f3f7ff);
  box-shadow:0 0 0 15px #f4f7ff,0 0 0 16px #e8f0fe,0 20px 50px -24px rgba(23,75,223,.5)}
.listening-orb strong{color:#15369c}
.progress-track{background:#e9eef7;border-radius:99px;box-shadow:inset 0 1px 2px rgba(19,42,94,.06)}
.progress-track>div{border-radius:99px;background:linear-gradient(90deg,#4a78f7,#174bdf);
  box-shadow:0 2px 8px -2px rgba(23,75,223,.6)}
.complete-icon{background:linear-gradient(140deg,#e8f0ff,#dce8ff);box-shadow:0 12px 26px -12px rgba(23,75,223,.6)}
dialog{border:1px solid rgba(228,234,243,.9);border-radius:22px;padding:26px;max-height:88vh;
  box-shadow:0 40px 90px -30px rgba(15,32,68,.45)}
dialog::backdrop{background:rgba(15,26,48,.42);backdrop-filter:blur(3px);-webkit-backdrop-filter:blur(3px)}
footer{border-top:1px solid rgba(228,234,243,.9)}
.local-status{display:inline-flex;align-items:center;gap:8px;width:fit-content;margin-top:14px;
  background:#fff;border:1px solid #e6ecf6;border-radius:99px;padding:6px 14px;
  box-shadow:0 1px 2px rgba(19,42,94,.04)}
.local-status::before{content:"";flex:none;width:8px;height:8px;border-radius:50%;background:#9aa7bb}
.local-status[data-state=ready]::before{background:#1f9d63;box-shadow:0 0 0 4px rgba(31,157,99,.15)}
.local-status[data-state=error]::before{background:#d9534f;box-shadow:0 0 0 4px rgba(217,83,79,.15)}
.local-status[data-state=pending]::before{background:#efa92a;animation:pulse-dot 1.4s ease-in-out infinite}
@keyframes pulse-dot{0%,100%{opacity:1}50%{opacity:.35}}
#cloud-lists::-webkit-scrollbar,.ocr-notes::-webkit-scrollbar{width:8px}
#cloud-lists::-webkit-scrollbar-thumb,.ocr-notes::-webkit-scrollbar-thumb{background:#d5deec;border-radius:99px}
#cloud-lists::-webkit-scrollbar-track,.ocr-notes::-webkit-scrollbar-track{background:transparent}
@media(max-width:720px){.card:hover{transform:none}.local-status{font-size:12px}}

#account-dialog .safety-block{margin-top:18px;border:1px solid var(--border);border-radius:12px;background:#fbfcff}
#account-dialog .safety-block summary{cursor:pointer;padding:12px 14px;font-size:14px;font-weight:600;color:#2b3f5f;list-style:none}
#account-dialog .safety-block summary::-webkit-details-marker{display:none}
#account-dialog .safety-block summary::before{content:"\25B8 ";color:#7b8aa3}
#account-dialog .safety-block[open] summary::before{content:"\25BE "}
#account-dialog .safety-body{padding:0 14px 14px}
#account-dialog .safety-row{display:flex;gap:8px;align-items:center;margin-top:8px;flex-wrap:wrap}
#account-dialog .safety-row input{flex:1;min-width:150px}
#account-dialog .safety-divider{height:1px;background:var(--border);margin:16px 0}
#account-dialog .danger-text{color:#a32d2d}
#account-dialog input[readonly]{background:#f4f6fa;color:#334561;font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:1px}
.button.danger{background:#fdecec;color:#a32d2d;box-shadow:inset 0 0 0 1px #f3c4c4}
.button.danger:hover{background:#fbdcdc}

.resume-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin:0 0 24px;padding:14px 18px;border:1px solid #cddcff;border-radius:16px;
  background:linear-gradient(135deg,#eef4ff,#e4edff);color:#23407e;font-size:14px;
  box-shadow:0 12px 28px -20px rgba(23,75,223,.6)}
.resume-actions{display:flex;align-items:center;gap:14px}
.resume-bar .button{padding:9px 15px}

#account-dialog .cloud-filter{margin:8px 0 0;width:100%;}
.answer-top-actions{display:flex;align-items:center;gap:14px}
.answer-top-actions .button{padding:8px 14px}
@media print{
  body{background:#fff}
  body *{visibility:hidden}
  #answers,#answers *{visibility:visible}
  #answers{position:absolute;left:0;top:0;width:100%;border:0;box-shadow:none;margin:0;padding:0}
  #answers .card-top{border-bottom:1px solid #999;padding-bottom:10px}
  #print-answers,#hide-answers,#toggle-answer-zh,#export-marked,#copy-answers,#export-answers{display:none}
  .answer-top-actions{display:none}
  .answer-grid{grid-template-columns:repeat(2,1fr)}
  .answer-word{border:0;background:none;padding:0}
}

/* ==========================================================
   账号面板 v4：居中登录卡（2026-09-16）
   只增强观感，不改动类名与 ID；删除本段即可回到旧样式。
   ========================================================== */
#account-dialog{position:relative;width:min(420px,calc(100% - 28px));padding:26px 26px 24px;
  max-height:90vh;overflow:auto;border-radius:24px;border:1px solid rgba(228,234,243,.95);
  box-shadow:0 40px 90px -34px rgba(15,32,68,.5),0 8px 24px -18px rgba(15,32,68,.35)}
#account-dialog::backdrop{background:rgba(15,26,48,.44);
  backdrop-filter:blur(5px) saturate(120%);-webkit-backdrop-filter:blur(5px) saturate(120%)}
.acct-x{position:absolute;top:13px;right:13px;width:30px;height:30px;border:0;border-radius:50%;
  background:#f1f5fb;color:#8593a9;font-size:19px;line-height:1;cursor:pointer;
  transition:background .18s ease,color .18s ease}
.acct-x:hover{background:#e6edf9;color:#3a4c69}

.auth-hero{text-align:center;margin-bottom:22px}
.auth-avatar{display:grid;place-items:center;width:60px;height:60px;margin:0 auto 14px;border-radius:50%;
  background:linear-gradient(140deg,#eef3ff,#dfe9ff);color:#2a56cf;
  box-shadow:0 0 0 6px #f4f7fd,0 0 0 7px #e4ecfb}
.auth-avatar svg{width:28px;height:28px}
#account-dialog .auth-hero h2{justify-content:center;font-size:20px;margin:0 0 7px}
.auth-lead{margin:0;font-size:13px;line-height:1.75;color:#66738c}

/* 通用字段 */
#account-dialog .field,#ai-dialog .field{display:block;margin:0 0 13px}
#account-dialog .field-label,#ai-dialog .field-label{display:block;font-size:13px;font-weight:650;color:#3a4c69;margin-bottom:7px}
#account-dialog .field-control,#ai-dialog .field-control{position:relative;display:flex;align-items:center;gap:9px;
  padding:0 12px;border:1px solid #e0e7f3;border-radius:13px;background:linear-gradient(180deg,#fbfcff,#f6f9fe);
  box-shadow:inset 0 1px 2px rgba(19,42,94,.04);
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease}
#account-dialog .field-control:focus-within,#ai-dialog .field-control:focus-within{border-color:#89a8ff;background:#fff;box-shadow:0 0 0 4px rgba(23,75,223,.13)}
#account-dialog .field-control .field-icon,#ai-dialog .field-control .field-icon{flex:none;width:18px;height:18px;fill:none;stroke:#8fa2c0;
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round;transition:stroke .2s ease}
#account-dialog .field-control:focus-within .field-icon,#ai-dialog .field-control:focus-within .field-icon{stroke:#3a68e8}
#account-dialog .field-control input,#ai-dialog .field-control input{flex:1;min-width:0;border:0;background:transparent;
  padding:12px 0;margin:0;font-size:15px;color:#1c2c4a;box-shadow:none;outline:0}
#account-dialog .field-control input::placeholder,#ai-dialog .field-control input::placeholder{color:#a4b0c4;font-size:13.5px}
#account-dialog .field-control input:focus,#ai-dialog .field-control input:focus{box-shadow:none}
#account-dialog .search-control,#ai-dialog .search-control{margin:10px 0 0}
#account-dialog .cloud-filter,#ai-dialog .cloud-filter{margin:0!important;width:100%}
#account-dialog .field-label em,#ai-dialog .field-label em{font-style:normal;font-weight:500;
  font-size:12px;color:#8b98ad;margin-left:6px}

.pw-toggle{flex:none;border:0;background:#eef3fb;color:#5b6d8c;font-size:12px;font-weight:650;
  padding:5px 10px;border-radius:8px;line-height:1.4;transition:background .18s ease,color .18s ease}
.pw-toggle:hover{background:#e2eaf8;color:#22407f}

.auth-submit{width:100%;margin-top:4px;padding:13px 18px;font-size:15px;font-weight:680;border-radius:13px}
.auth-switch{margin:14px 0 0;text-align:center;font-size:13.5px;color:#66738c}
.auth-switch .text-button{font-size:13.5px;font-weight:650}

.member-hero{display:flex;flex-direction:column;align-items:center;gap:7px;padding:18px 16px 14px;
  border:1px solid #e6ecf8;border-radius:18px;background:#fbfcff}
.member-avatar{display:grid;place-items:center;width:52px;height:52px;border-radius:50%;
  background:linear-gradient(140deg,#4a78f7,#133fc4);color:#fff;font-size:22px;font-weight:700;
  text-transform:uppercase;box-shadow:0 10px 22px -12px rgba(23,75,223,.8),inset 0 1px 0 rgba(255,255,255,.3)}
.member-hero b{font-size:17px;color:#16233f;max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.member-chip{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:99px;
  background:#fff;box-shadow:inset 0 0 0 1px #dbe5fb;font-size:12px;color:#2f4a80;font-weight:600}
.member-chip i{width:7px;height:7px;border-radius:50%;background:#1f9d63;box-shadow:0 0 0 3px rgba(31,157,99,.16)}
.member-hero .text-button{margin-top:2px;font-size:13px}
.member-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:12px}
.member-actions .button{padding:11px 10px;font-size:13.5px;font-weight:600}

#account-dialog .sub-panel{margin-top:16px;padding:15px 15px 6px;border:1px solid var(--border);
  border-radius:16px;background:#fbfcff}
#account-dialog .sub-panel-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
#account-dialog .cloud-title{margin:0;font-size:15px;font-weight:680;color:#233656}
#account-dialog .sub-panel .badge{font-size:12px;padding:2px 9px}
#account-dialog .cloud-save-row{margin-top:12px;gap:8px}
#account-dialog .cloud-save-row input{flex:1;min-width:0;margin:0;padding:11px 13px;border:1px solid #e0e7f3;
  border-radius:12px;background:#fff;font-size:14px;color:#1c2c4a;transition:border-color .2s ease,box-shadow .2s ease}
#account-dialog .cloud-save-row input:focus{border-color:#89a8ff;box-shadow:0 0 0 4px rgba(23,75,223,.13);outline:0}
#account-dialog .cloud-save-row .button{padding:11px 18px;border-radius:12px;font-weight:650}
#account-dialog .cloud-lists{margin:12px 0 0;max-height:220px;padding:2px}
#account-dialog .cloud-lists li{gap:10px;padding:10px 12px;margin-bottom:8px;border:1px solid #e9eefa;
  border-radius:12px;background:#fff;box-shadow:0 1px 2px rgba(19,42,94,.04);
  transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
#account-dialog .cloud-lists li:hover{border-color:#c3d4f8;box-shadow:0 8px 18px -12px rgba(23,75,223,.6);transform:translateY(-1px)}
#account-dialog .cloud-lists li:last-child{border-bottom:1px solid #e9eefa}
#account-dialog .cloud-lists .cloud-list-name{font-weight:620;color:#243a5e}
#account-dialog .cloud-lists .cloud-list-meta{color:#7a879a;font-size:12px;background:#f4f7fc;padding:2px 8px;border-radius:99px}
#account-dialog .cloud-lists .text-button{padding:3px 8px;border-radius:7px;font-size:13px;font-weight:640}
#account-dialog .cloud-lists li:only-child{border:0;background:transparent;box-shadow:none;color:#66738c;justify-content:center}

#account-dialog .safety-block{margin-top:16px;border:1px solid var(--border);border-radius:14px;
  background:#fff;overflow:hidden}
#account-dialog .safety-block summary{display:flex;align-items:center;gap:8px;cursor:pointer;
  padding:12px 14px;font-size:13.5px;font-weight:650;color:#3d5170;list-style:none;background:#fbfcff;
  transition:background .18s ease}
#account-dialog .safety-block summary:hover{background:#f4f7fd}
#account-dialog .safety-block summary::-webkit-details-marker{display:none}
#account-dialog .safety-block summary .field-icon{width:16px;height:16px;fill:none;stroke:#3a68e8;
  stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
#account-dialog .safety-block summary::after{content:"\25BE";margin-left:auto;color:#8d9ab2;font-size:12px;
  transition:transform .2s ease}
#account-dialog .safety-block[open] summary::after{transform:rotate(180deg)}
#account-dialog .safety-body{padding:4px 14px 14px}
#account-dialog .safety-item{padding:13px 0;border-top:1px dashed #e8eef7}
#account-dialog .safety-item:first-child{border-top:0;padding-top:4px}
#account-dialog .safety-item-head h4{margin:0 0 4px;font-size:14px;font-weight:680;color:#233656}
#account-dialog .safety-item .key-help{margin:0;color:#66738c;font-size:12.5px;line-height:1.75}
#account-dialog .safety-item .danger-text{color:#a32d2d}
#account-dialog .safety-row{margin-top:10px;gap:8px}
#account-dialog .safety-row input{flex:1;min-width:120px;margin:0;padding:11px 13px;border:1px solid #e0e7f3;
  border-radius:12px;background:#fff;font-size:14px;color:#1c2c4a;transition:border-color .2s ease,box-shadow .2s ease}
#account-dialog .safety-row input:focus{border-color:#89a8ff;box-shadow:0 0 0 4px rgba(23,75,223,.13);outline:0}
#account-dialog input[readonly]{background:#f4f6fa;border-color:#e4eaf3;color:#334561;
  font-family:ui-monospace,Menlo,Consolas,monospace;letter-spacing:1.2px}
.safety-action{margin-top:11px;padding:9px 16px;font-size:13.5px;font-weight:640}
#account-dialog .danger-zone{background:linear-gradient(180deg,rgba(253,236,236,0),rgba(253,236,236,.55));
  border-radius:12px;padding:13px 12px;border-top:1px solid #f3d6d6}
#account-dialog .button.danger{padding:11px 18px;font-weight:680}
@media(max-width:480px){
  #account-dialog{padding:22px 18px 20px}
  .member-actions{grid-template-columns:1fr}
  #account-dialog .safety-row input{min-width:100%}
}

/* AI 密钥设置对话框：与账号面板同一套观感 */
#ai-dialog{width:min(520px,calc(100% - 28px));padding:0;max-height:90vh;overflow:auto;border-radius:26px;
  border:1px solid rgba(228,234,243,.95);
  box-shadow:0 50px 110px -34px rgba(15,32,68,.5),0 8px 24px -18px rgba(15,32,68,.4)}
#ai-dialog h2{font-size:19px;margin:0 0 4px}
.account-head{display:flex;gap:14px;align-items:flex-start;padding:22px 24px 16px;
  background:linear-gradient(160deg,#f2f6ff,#e9f0ff 55%,#eef3ff);
  border-bottom:1px solid #e6ecf8;border-radius:26px 26px 0 0}
.account-crest{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:14px;
  background:linear-gradient(140deg,#4a78f7,#133fc4);color:#fff;font-size:19px;font-weight:700;
  letter-spacing:-1px;box-shadow:0 10px 22px -10px rgba(23,75,223,.7),inset 0 1px 0 rgba(255,255,255,.3)}
#ai-dialog .account-view{padding:20px 24px 22px}

#account-dialog .field-label em,#ai-dialog .field-label em{font-style:normal;font-weight:500;
  font-size:12px;color:#8b98ad;margin-left:6px}
#ai-dialog .key-help{margin:8px 0 0;font-size:12.5px;line-height:1.8;color:#66738c}
#ai-dialog .key-help a{color:#2a56cf;font-weight:620;text-decoration:none;border-bottom:1px solid #c9d8fb}
#ai-dialog .key-help a:hover{color:#123ec0;border-bottom-color:#123ec0}
#ai-dialog .key-note{margin-top:16px;padding:11px 13px;border-radius:12px;background:#f7f9fe;
  box-shadow:inset 0 0 0 1px #e8eefa;color:#5f6e8a}
#ai-dialog .remember-row{display:flex;align-items:center;gap:10px;margin-top:16px;padding:12px 14px;
  border:1px solid #e6ecf8;border-radius:13px;background:#fbfcff;font-size:13.5px;color:#3a4c69;font-weight:600;cursor:pointer}
#ai-dialog .remember-row input[type=checkbox]{width:17px;height:17px;margin:0;accent-color:#174bdf;cursor:pointer}
#ai-dialog .dialog-actions{margin-top:20px}
@media(max-width:560px){#ai-dialog .account-view{padding:18px}#ai-dialog .account-head{padding:20px 18px 16px}}

/* 报读音色选择 */
.voice-row{display:block;font-size:14px;margin:0 0 18px;color:#3a4c69;font-weight:600}
.voice-row-controls{display:flex;gap:9px;align-items:center;margin-top:8px}
.voice-row-controls select{flex:1;min-width:0;margin:0}
.voice-preview{white-space:nowrap;padding:0 15px;height:41px;flex:none}
.voice-row.is-muted{opacity:.55}
.voice-row.is-muted select{cursor:not-allowed}
#style-row{margin-bottom:14px}
#reset-style{white-space:nowrap;padding:0 13px;height:41px;flex:none}
.voice-description{margin:0;font-size:12.5px;line-height:1.7;color:var(--muted)}
.voice-description.voice-warn{color:#a4560d;background:#fff6e8;border:1px solid #f0c88a;border-radius:8px;padding:6px 10px}
.start-actions{display:flex;flex-direction:column;gap:10px;align-items:stretch}
.preload-row{display:flex;align-items:center;gap:10px;justify-content:space-between}
.preload-row .button{padding:7px 13px;font-size:13.5px;white-space:nowrap}
#preload-status{font-size:12px;color:#5b7094;line-height:1.5;text-align:right}
.answer-top-actions{flex-wrap:wrap;gap:10px;justify-content:flex-end}
@media(max-width:760px){
  .start-actions{width:100%}
  .preload-row{flex-wrap:wrap;justify-content:flex-start}
  #preload-status{text-align:left}
}

/* ==========================================================
   动词变形模式：动词库面板 / 投屏提示 / 答案三态 / 考察记录
   ========================================================== */
.verb-library-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:14px 0 2px}
.verb-library-row .upload-button{padding:9px 15px;font-size:13.5px}
.verb-library-note{font-size:12px;color:#6b7c99;line-height:1.5}

/* 动词库面板：与其他对话框同一套骨架 */
#verb-dialog{max-width:780px;width:calc(100% - 32px);padding:22px 24px 20px;max-height:90vh;overflow:auto;
  border:1px solid rgba(228,234,243,.95);
  box-shadow:0 50px 110px -34px rgba(15,32,68,.5),0 8px 24px -18px rgba(15,32,68,.4)}
#verb-dialog .card-top{margin-bottom:12px;padding-bottom:14px;gap:14px}
#verb-dialog h2{font-size:19px;margin:0}
.dialog-top-right{display:flex;align-items:center;gap:10px;flex:none}
#verb-dialog .mode-note{margin:0 0 14px;font-size:13.5px;line-height:1.75}

.verb-stats{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.verb-stat{display:inline-flex;align-items:baseline;gap:5px;padding:7px 13px;border-radius:10px;
  background:#f6f8fd;box-shadow:inset 0 0 0 1px #e6ecf8;font-size:13px;color:#5b7094;font-weight:600}
.verb-stat b{font-size:15px;font-weight:700;color:#1d2b45}

#verb-dialog .verb-toolbar{margin:0 0 12px;gap:12px}
#verb-dialog .search-control{flex:1;min-width:200px;margin:0}
.verb-inline-field{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:#3a4c69;font-weight:600;white-space:nowrap}
.verb-inline-field select,.verb-count-input{padding:8px 10px;font-size:14px;color:#233b64;
  border:1px solid #dce3ee;border-radius:9px;background:#fff}
.verb-count-input{width:68px;text-align:center}
.verb-inline-field select:focus,.verb-count-input:focus{outline:none;border-color:#9db8f5;
  box-shadow:0 0 0 3px rgba(23,75,223,.13)}
.verb-toolbar-buttons{display:flex;gap:6px;align-items:center}

.verb-random{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;
  padding:12px 14px;border:1px solid #e6ecf8;border-radius:13px;background:#fbfcff}
.verb-random-title{font-size:13.5px;font-weight:680;color:#2c3f5f}
.verb-random .button{padding:7px 14px;font-size:13.5px}
.verb-check{display:inline-flex;align-items:center;gap:7px;font-size:13px;color:#3a4c69;font-weight:600;cursor:pointer}
.verb-check input[type=checkbox]{width:16px;height:16px;margin:0;accent-color:#174bdf;cursor:pointer}
.verb-random-note{font-size:12.5px;color:#5b7094;line-height:1.6}

.verb-groups{display:flex;flex-direction:column;gap:10px;max-height:44vh;overflow:auto;padding:2px}
.verb-group{border:1px solid #e6ecf8;border-radius:14px;background:#fbfcff;overflow:hidden}
.verb-group>summary{padding:11px 15px;font-size:13.5px;font-weight:650;color:#2c3f5f;cursor:pointer;
  list-style:none;display:flex;align-items:center;justify-content:space-between;gap:10px;user-select:none}
.verb-group>summary:hover{background:#f2f6ff}
.verb-group>summary span:first-of-type{display:flex;align-items:center;gap:8px}
.verb-group>summary span:first-of-type::before{content:"";flex:none;width:0;height:0;border-left:5px solid #8b98ad;
  border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .15s}
.verb-group[open]>summary span:first-of-type::before{transform:rotate(90deg)}
.verb-group-count{flex:none;font-size:12px;font-weight:650;color:#5b7094;padding:2px 9px;border-radius:99px;
  background:#eef3ff;box-shadow:inset 0 0 0 1px #dbe5fb}
.verb-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(238px,1fr));gap:2px;padding:4px 8px 10px}
.verb-item{display:flex;align-items:baseline;gap:8px;padding:7px 9px;border-radius:9px;cursor:pointer;font-size:13.5px}
.verb-item:hover{background:#eef3ff}
.verb-item.is-picked{background:#e8f0ff}
.verb-item input[type=checkbox]{width:16px;height:16px;margin:0;accent-color:#174bdf;flex:none;align-self:center}
.verb-item b{font-weight:650;color:#1d2b45;flex:none}
.verb-forms{flex:1;font-size:12px;color:#7c8aa4;line-height:1.4;min-width:0;overflow-wrap:anywhere}
.verb-count{flex:none;font-size:11px;font-weight:650;line-height:1.7;padding:1px 8px;border-radius:99px;white-space:nowrap}
.verb-count.is-new{background:#f1f4f9;color:#93a1b8}
.verb-count.is-few{background:#e8efff;color:#2c53c8}
.verb-count.is-many{background:#e7f6ed;color:#1f7a45}
.verb-flag{flex:none;font-size:12px;color:#c98a1e;line-height:1.7}
.verb-footer-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap}

/* 自定义动词：添加与批量导入 */
.verb-add{border:1px solid #e6ecf8;border-radius:14px;background:#fbfcff;margin-bottom:12px;overflow:hidden}
.verb-add>summary{padding:11px 15px;font-size:13.5px;font-weight:650;color:#2c3f5f;cursor:pointer;
  display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;list-style:none}
.verb-add>summary::-webkit-details-marker{display:none}
.verb-add>summary:hover{background:#f2f6ff}
.verb-add>summary::before{content:"";flex:none;width:0;height:0;border-left:5px solid #8b98ad;
  border-top:4px solid transparent;border-bottom:4px solid transparent;transition:transform .15s}
.verb-add[open]>summary::before{transform:rotate(90deg)}
.verb-add-title{color:#174bdf}
.verb-add-hint{font-size:12px;font-weight:500;color:#7c8aa4}
.verb-add-body{padding:2px 15px 14px;display:flex;flex-direction:column;gap:10px}
.verb-add-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(132px,1fr));gap:10px;align-items:end}
.verb-add-field{display:flex;flex-direction:column;gap:5px;font-size:12.5px;font-weight:600;color:#3a4c69}
.verb-add-field input{padding:9px 11px;font-size:14px;color:#233b64;border:1px solid #dfe7f5;border-radius:10px;
  background:#fff;min-width:0}
.verb-add-field input:focus{outline:none;border-color:#9db8f5;box-shadow:0 0 0 3px rgba(23,75,223,.12)}
.verb-add-grid .button{padding:9px 14px;font-size:13.5px;white-space:nowrap}
.verb-add-label{font-size:12.5px;color:#5b7094;line-height:1.6}
#verb-batch{width:100%;padding:10px 12px;font-size:13.5px;line-height:1.6;color:#233b64;
  border:1px solid #dfe7f5;border-radius:10px;background:#fff;resize:vertical;font-family:inherit}
#verb-batch:focus{outline:none;border-color:#9db8f5;box-shadow:0 0 0 3px rgba(23,75,223,.12)}
.verb-add-actions{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.verb-add-actions .button{padding:8px 15px;font-size:13.5px}
.verb-add-note{font-size:12.5px;color:#5b7094;line-height:1.6}
.verb-del{flex:none;margin:0;padding:0 6px;border:0;background:none;color:#a9b4c6;font-size:12px;
  line-height:1.7;cursor:pointer;border-radius:6px}
.verb-del:hover{background:#fdecec;color:#c0392b}
.verb-cloud-note{display:block;margin-top:4px;font-size:12.5px;line-height:1.6;color:#5b7094}
.verb-cloud-note[data-state=ok]{color:#1f7a45}
.verb-cloud-note[data-state=error]{color:#c0392b}

/* 投屏：动词模式显示中文释义与考察次数 */
.session-card.verb-session .cloze-display{display:flex;flex-direction:column;align-items:center;gap:6px;
  padding:22px 20px;min-height:96px;justify-content:center}
.verb-hint-word{font-size:30px;font-weight:650;color:#1d2b45;letter-spacing:.5px;line-height:1.3;text-align:center}
.verb-hint-note{font-size:13px;color:#6b7c99;letter-spacing:.3px}

/* 答案页：三态对照与考察记录 */
#answer-list.answers-verb{grid-template-columns:repeat(auto-fill,minmax(268px,1fr))}
.answer-forms{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:10px 0 2px}
.verb-cell{display:flex;flex-direction:column;gap:3px;padding:8px 10px;border-radius:10px;
  background:#f6f8fd;box-shadow:inset 0 0 0 1px #e6ecf8;min-width:0}
.verb-cell small{font-size:11px;color:#8b98ad;line-height:1.3}
.verb-cell b{font-size:15px;font-weight:650;color:#1d2b45;overflow-wrap:anywhere;line-height:1.35}
.verb-cell:nth-child(2) b{color:#174bdf}
.verb-cell:nth-child(3) b{color:#0f6e56}
.verb-exam-count{margin-top:2px;font-size:12px;font-weight:650;color:#1f7a45;line-height:1.7}
.verb-exam-count.is-new{color:#93a1b8;font-weight:600}

@media(max-width:600px){
  #verb-dialog{padding:18px 16px 20px}
  .verb-grid{grid-template-columns:1fr}
  .verb-groups{max-height:38vh}
  .verb-footer-actions{width:100%;justify-content:space-between}
}
@media(max-width:520px){
  .verb-hint-word{font-size:24px}
  .answer-forms{grid-template-columns:1fr}
  .verb-cell{flex-direction:row;align-items:baseline;gap:8px}
  .verb-cell small{flex:none;min-width:44px}
}

/* ==========================================================
   答案页中文释义 / 整句翻译 / 错词标记 · 投屏字号
   ========================================================== */
.answer-meaning,.answer-translation{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}
.answer-meaning em,.answer-translation em{font-style:normal;flex:none;font-size:11.5px;font-weight:650;
  letter-spacing:.5px;padding:2px 8px;border-radius:99px;line-height:1.6}
.answer-meaning em{background:#e8efff;color:#2c53c8}
.answer-translation{margin-top:8px;font-size:14px;color:#4a6285;line-height:1.75;overflow-wrap:anywhere}
.answer-translation em{background:#e7f6ed;color:#1f7a45}
.answer-translation.is-empty{color:#93a1b8}
.answer-translation.is-empty em{background:#f1f4f9;color:#93a1b8}
.answer-flag,.mark-flag{font-size:11.5px;padding:1px 8px;border-radius:99px;line-height:1.8;white-space:nowrap;flex:none}
.answer-flag{background:#fdf1e6;color:#a2601a}
.mark-flag{background:#fff3d9;color:#95630c;box-shadow:inset 0 0 0 1px #f2ddb2}
#answer-list li.marked-row{position:relative;padding-left:15px}
#answer-list li.marked-row::before{content:"";position:absolute;left:0;top:15px;bottom:15px;width:3px;
  border-radius:3px;background:#e8a33d}
#answers.hide-zh [data-zh]{display:none}
#mark-word.is-on{background:#fff6e3;border-color:#efd79d;color:#8a5a08}
#mark-word.is-on:hover{background:#fdefd2;border-color:#e5c884}

/* 听写页：顶栏工具与标记计数 */
.session-tools{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.font-tools{display:inline-flex;gap:6px}
.font-tools .button{padding:6px 12px;font-size:14px;line-height:1.2;min-width:38px}
.marked-count{font-size:13px;color:#a97520;font-weight:650;white-space:nowrap}

/* 投屏字号：--pz 由 JS 写在 .session-card 上 */
.session-card{--pz:1}
.session-card #status-text{font-size:calc(28px * var(--pz,1))}
.session-card #status-detail{font-size:calc(16px * var(--pz,1))}
.session-card .cloze-display{font-size:calc(clamp(28px,3.5vw,48px) * var(--pz,1))}
.session-card .listening-orb strong{font-size:calc(60px * var(--pz,1))}
.session-card.cloze-session .listening-orb strong,
.session-card.verb-session .listening-orb strong{font-size:calc(38px * var(--pz,1))}
.session-card .verb-hint-word{font-size:calc(30px * var(--pz,1))}
@media(max-width:760px){
  .session-tools{justify-content:flex-start}
  .session-card #status-text{font-size:calc(23px * var(--pz,1))}
}

.voice-library-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(212px,1fr));gap:10px;margin-top:10px;max-height:52vh;overflow-y:auto;padding-right:2px}
.voice-card{border:1px solid var(--border);border-radius:12px;padding:10px 12px;background:#fff;display:flex;flex-direction:column;gap:6px}
.voice-card.is-active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(23,75,223,.14)}
.voice-card-head{display:flex;align-items:center;justify-content:space-between;gap:8px}
.voice-card-head strong{font-size:15px;color:#172747}
.voice-card-tag{font-size:12px;color:var(--muted);background:#f3f6fc;border-radius:999px;padding:2px 8px;white-space:nowrap}
.voice-card-tag.is-rec{color:var(--blue);background:rgba(23,75,223,.1)}
.voice-card-note{margin:0;font-size:13px;color:var(--muted);line-height:1.5}
.voice-card-actions{display:flex;gap:8px;margin-top:2px}
.voice-card-actions button{flex:1;padding:7px 8px;font-size:13px}
.voice-card-play.is-playing{color:var(--blue);border-color:var(--blue)}
.voice-lib-switch{display:inline-flex;align-items:center;gap:6px;font-size:14px;color:#172747}
.voice-card.is-dead{opacity:.55;background:#f7f8fb}

.verb-group-block{border:1px solid #e6ecf8;border-radius:14px;background:#fbfcff;overflow:hidden}
.verb-group-head{position:sticky;top:0;z-index:1;display:flex;align-items:center;gap:10px;padding:8px 12px;background:#f2f6ff;border-bottom:1px solid #e6ecf8}
.verb-group-title{font-size:13.5px;font-weight:650;color:#2c3f5f;flex:1}
.verb-group-head .verb-group-count{font-size:12.5px;color:#66738c}
.verb-group-pick{border:1px solid #d7e1f5;background:#fff;color:#174bdf;border-radius:8px;padding:4px 10px;font-size:12.5px;cursor:pointer}
.verb-group-pick:hover{background:#eef3ff}
.verb-level-tag{font-size:11px;color:#8a6d1f;background:#fdf3d8;border-radius:999px;padding:1px 7px;flex:none}
.verb-groups{max-height:52vh}
.verb-item{padding:6px 9px}
.verb-stat:last-child b{color:#174bdf}

.engine-cards{display:flex;gap:8px;flex-wrap:wrap;width:100%}
.engine-card{flex:1 1 150px;display:flex;flex-direction:column;gap:3px;align-items:flex-start;text-align:left;border:1px solid var(--border);background:#fff;border-radius:12px;padding:8px 11px}
.engine-card strong{font-size:14px;color:#172747;font-weight:650}
.engine-card-note{font-size:12px;color:var(--muted);line-height:1.4}
.engine-card-state{font-size:11.5px;border-radius:999px;padding:1px 8px;margin-top:2px}
.engine-card-state.is-ok{color:#146c43;background:#e6f6ec}
.engine-card-state.is-missing{color:#a35b00;background:#fdf1de}
.engine-card.is-active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(23,75,223,.14);background:#f5f8ff}