.ky-passage{font-family:var(--font-read);font-size:1.06em;line-height:1.95;color:var(--text);overflow-wrap:anywhere}.passage.ky-passage,.ky-passage{white-space:normal}.ky-passage .ky-para{margin:0 0 1em}.ky-passage .ky-para:last-child{margin-bottom:0}.ky-para-cn{margin:-.35em 0 1.25em;padding:10px 14px;border-left:3px solid var(--primary-soft-2);border-radius:0 var(--radius-xs) var(--radius-xs) 0;background:var(--surface-2);font-family:var(--font-sans);font-size:.9em;line-height:1.9;color:var(--text-2);white-space:normal}.ky-subhead{margin:1.3em 0 .45em;font-family:var(--font-sans);font-size:.96em;font-weight:700;color:var(--text)}.ky-dir.directions{white-space:normal}.material-head .ky-head-sub{margin-left:4px;padding:1px 9px;border-radius:99px;background:var(--primary-soft);color:var(--primary-ink);font-size:12px;letter-spacing:0}.ky-material-note{margin:-6px 0 16px;font-size:12.5px;color:var(--muted)}.ky-material-bar{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 12px;margin:0 0 12px}.practice-page[data-columns=double] .ky-material-bar{position:sticky;top:0;z-index:3;padding:0 0 10px;background:var(--bg)}.ky-group-switch{display:flex;flex-wrap:wrap;gap:6px}.ky-group-switch button{min-height:34px;padding:4px 12px;gap:8px;border-radius:99px;font-size:13px}.ky-group-switch button small{font-size:12px;font-weight:600;color:var(--faint);font-variant-numeric:tabular-nums}.ky-group-switch button.complete small{color:var(--success)}.ky-group-switch button[aria-pressed=true]{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}.ky-group-switch button[aria-pressed=true] small{color:inherit;opacity:.82}.ky-pdf-links{display:inline-flex;flex-wrap:wrap;align-items:center;gap:4px 12px;font-size:13px;color:var(--muted)}.ky-pdf-links a{display:inline-flex;align-items:center;gap:4px}.blank-slot.ky-gap-btn{min-width:48px;cursor:pointer}span.blank-slot.ky-gap-btn{cursor:default}.blank-slot.ky-gap-btn small{font-size:.82em}.blank-slot.ky-gap-btn.correct{border-bottom-color:var(--success);background:var(--success-soft);color:var(--success)}.blank-slot.ky-gap-btn.wrong{border-bottom-color:var(--danger);background:var(--danger-soft);color:var(--danger)}.blank-slot.ky-gap-btn.active.correct,.blank-slot.ky-gap-btn.active.wrong{box-shadow:var(--ring)}.blank-slot.ky-gap-block{display:flex;justify-content:flex-start;align-items:baseline;flex-wrap:wrap;gap:4px 10px;width:100%;min-height:44px;margin:0;padding:8px 14px;border:1.5px dashed var(--primary);border-radius:var(--radius-sm);text-align:left;white-space:normal;font-weight:600;line-height:1.6}.blank-slot.ky-gap-block:not(.has-val){justify-content:flex-start}.blank-slot.ky-gap-block .ky-gap-text{font-family:var(--font-read);font-weight:500;color:var(--text)}.blank-slot.ky-gap-block.active .ky-gap-text{color:inherit}.blank-slot.ky-gap-block.correct,.blank-slot.ky-gap-block.wrong{border-style:solid}.ky-gap-ref{display:inline-block;min-width:2.6em;margin:0 2px;padding:0 4px;border-bottom:1.5px solid currentColor;text-align:center;font-family:var(--font-sans);font-size:.85em;color:var(--muted)}.ky-order-chain{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin:0 0 18px;padding:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2);font-family:var(--font-sans)}.ky-order-label{flex-basis:100%;margin-bottom:2px;font-size:12px;font-weight:600;color:var(--muted)}.ky-order-arrow{color:var(--faint);font-size:13px}.ky-order-given,.ky-order-slot{display:inline-flex;flex-direction:column;align-items:center;justify-content:center;min-width:50px;height:48px;min-height:0;padding:0 8px;gap:0;border-radius:10px;line-height:1.15}.ky-order-given{min-width:66px;background:var(--surface-3);border:1px solid var(--border);color:var(--text-2)}.ky-order-given b,.ky-order-slot b{font-size:16px;font-weight:700}.ky-order-given small,.ky-order-slot small{font-size:10.5px;font-weight:500;color:var(--muted)}.ky-order-slot{border:1.5px dashed var(--primary);background:var(--surface);color:var(--primary-ink)}.ky-order-slot.filled{border-style:solid;background:var(--primary-soft)}.ky-order-slot.active{box-shadow:var(--ring);background:var(--primary);color:var(--on-primary);border-color:var(--primary)}.ky-order-slot.active small{color:inherit;opacity:.8}.ky-order-slot.correct{border:1.5px solid var(--success);background:var(--success-soft);color:var(--success)}.ky-order-slot.wrong{border:1.5px solid var(--danger);background:var(--danger-soft);color:var(--danger)}.ky-lp{margin:0 0 14px;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface)}.ky-lp:last-child{margin-bottom:0}.ky-lp.given{background:var(--surface-2)}.ky-lp.used{border-color:var(--primary-soft-2);box-shadow:inset 3px 0 0 var(--primary-soft-2)}.ky-lp-head{display:flex;flex-wrap:wrap;align-items:center;gap:6px 8px;margin-bottom:6px;font-family:var(--font-sans);font-size:13px;line-height:1.5}.passage .ky-lp-head .p-label{min-width:28px;height:28px;margin-right:2px;font-size:14px;vertical-align:0}.ky-lp .ky-para{margin:0}.ky-lp .ky-para-cn{margin:10px 0 0}.ky-options{margin-top:24px;padding-top:16px;border-top:1px dashed var(--border-strong)}.ky-options-head{margin-bottom:10px;font-family:var(--font-sans);font-size:13px;font-weight:650;color:var(--muted)}.ky-option-row{display:flex;align-items:flex-start;gap:10px;padding:7px 8px;border-radius:var(--radius-xs);font-family:var(--font-read);line-height:1.7;color:var(--text);transition:opacity .2s}.ky-option-row+.ky-option-row{margin-top:2px}.ky-option-row .ky-key{flex:none;display:grid;place-items:center;width:26px;height:26px;margin-top:1px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-family:var(--font-sans);font-size:13px;font-weight:700}.ky-option-row .ky-option-text{flex:1;min-width:0;overflow-wrap:anywhere}.ky-option-row.used{opacity:.5}.ky-option-row.current{opacity:1;background:var(--primary-soft)}.ky-used-tag{flex:none;align-self:center;padding:0 8px;border-radius:99px;background:var(--surface-3);color:var(--muted);font-family:var(--font-sans);font-size:12px;font-weight:600;line-height:1.7}.ky-ul{text-decoration:underline;text-decoration-color:var(--primary);text-decoration-thickness:1.5px;text-underline-offset:4px}.ky-ul.current{background:var(--primary-soft);border-radius:3px;box-decoration-break:clone;-webkit-box-decoration-break:clone}.ky-ul-badge{display:inline-flex;align-items:center;height:1.55em;min-height:0;margin:0 5px 0 0;padding:0 7px;vertical-align:.08em;border:1px solid var(--primary-soft-2);border-radius:99px;background:var(--primary-soft);color:var(--primary-ink);font-family:var(--font-sans);font-size:.76em;font-weight:700;line-height:1}button.ky-ul-badge:hover{background:var(--primary-soft-2);color:var(--primary-ink)}.ky-ul-badge.active{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}.ky-prompt{font-family:var(--font-read);font-size:1.02em;line-height:1.85;color:var(--text);overflow-wrap:anywhere}.ky-prompt p{margin:0 0 .4em}.ky-prompt p:last-child{margin-bottom:0}.ky-prompt .ky-enum-line{padding-left:1.9em;text-indent:-1.9em}.ky-enum{display:inline-block;min-width:1.5em;margin-right:.4em;text-indent:0;font-family:var(--font-sans);font-weight:700;color:var(--primary)}.ky-prompt-quote{margin:12px 0;padding:12px 16px;border-left:3px solid var(--primary-soft-2);border-radius:0 var(--radius-xs) var(--radius-xs) 0;background:var(--surface-2)}.ky-prompt-quote p{margin:0 0 .3em}.ky-figure{margin:18px 0 0}.ky-figure a{display:block;overflow:hidden;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff}.ky-figure img{display:block;width:100%;height:auto;max-height:560px;object-fit:contain}html[data-theme=dark] .ky-figure img{filter:brightness(.92)}.ky-figure figcaption{margin-top:8px;font-family:var(--font-sans);font-size:12px;color:var(--muted)}.ky-figure-missing{display:flex;align-items:center;gap:8px;padding:18px;border:1px dashed var(--warning-border);border-radius:var(--radius-sm);background:var(--warning-soft);color:var(--warning);font-family:var(--font-sans);font-size:14px}.qcard.ky-card-cloze{padding:16px 20px}.ky-card-cloze .qhead{margin-bottom:10px}.ky-card-cloze .qactions{margin-top:10px;padding-top:8px}.ky-card-translation_passage textarea.essay{min-height:320px}.ky-card-writing textarea.essay{min-height:300px}.opts.ky-compact{display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:7px}.opts.ky-compact .opt{align-items:center;gap:10px;padding:8px 10px}.opts.ky-compact .opt .okey{width:26px;height:26px;margin-top:0}.ky-slot-hint{margin:2px 0 10px;font-family:var(--font-sans);font-size:13.5px;color:var(--muted)}.letter-row.ky-letters{margin-top:6px}.letter-row.ky-letters .L.tf{width:auto;min-width:92px;padding:0 14px;gap:6px}.letter-row.ky-letters .L.tf small{font-size:13px;font-weight:600}.letter-row.ky-letters .L.correct{background:var(--success);border-color:var(--success);color:#fff;box-shadow:none}.letter-row.ky-letters .L.wrong{background:var(--danger);border-color:var(--danger);color:#fff;box-shadow:none}.letter-row.ky-letters .L.correct:disabled,.letter-row.ky-letters .L.wrong:disabled,.letter-row.ky-letters .L.selected:disabled{opacity:1}html[data-theme=dark] .letter-row.ky-letters .L.correct,html[data-theme=dark] .letter-row.ky-letters .L.wrong{color:#0d0f14}.ky-chosen{margin-top:10px;padding:9px 12px;border:1px solid var(--border);border-radius:var(--radius-xs);background:var(--surface-2);font-family:var(--font-read);line-height:1.7;color:var(--text-2);overflow-wrap:anywhere}.ky-chosen>b{margin-right:6px;font-family:var(--font-sans);color:var(--primary)}.ky-chosen.clamp>span{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}.ky-sentence{margin:4px 0 12px;padding:12px 14px;border-left:3px solid var(--primary);border-radius:0 var(--radius-xs) var(--radius-xs) 0;background:var(--surface-2);font-family:var(--font-read);font-size:1.02em;line-height:1.8;color:var(--text);overflow-wrap:anywhere}.ky-draft-meta{display:flex;flex-wrap:wrap;justify-content:space-between;gap:4px 14px;margin-top:6px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.ky-draft-meta .ok{color:var(--success);font-weight:600}.ky-draft-meta .under,.ky-draft-meta .over{color:var(--warning);font-weight:600}.analysis-title.ky-an-title{flex-wrap:wrap}.ky-raw-toggle{margin-left:auto;min-height:26px;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:550;letter-spacing:0;color:var(--muted)}.ky-raw-toggle[aria-pressed=true]{background:var(--primary-soft);border-color:var(--primary-soft-2);color:var(--primary-ink)}.ky-an{color:var(--text-2);overflow-wrap:anywhere}.ky-an-head{margin:14px 0 4px;font-size:12.5px;font-weight:700;letter-spacing:.04em;color:var(--primary)}.ky-an-head:first-child{margin-top:2px}.ky-an-line{margin:0 0 4px}.ky-an-raw.analysis-text{max-height:none}.line-prose p{margin:0 0 .75em}.line-prose p:last-child{margin-bottom:0}.ky-ref-label{font-family:var(--font-sans);font-size:12px;font-weight:650;color:var(--muted)}.ky-ref-para{margin:0}.ky-ref-para+.ky-ref-para{margin-top:.75em}.ky-ref-para .ky-ref-label{margin-right:6px}.ky-note-line{margin-top:10px;font-size:12.5px;color:var(--muted)}.answer-line .ky-badge-wrap{align-self:center;display:flex;flex-wrap:wrap;gap:6px}.ky-evidence{margin-top:12px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface)}.ky-evidence>summary{display:flex;flex-wrap:wrap;align-items:center;gap:6px 10px;padding:10px 12px;cursor:pointer;list-style:none;font-size:13.5px;line-height:1.6;color:var(--text-2)}.ky-evidence>summary::-webkit-details-marker{display:none}.ky-evidence>summary>svg{color:var(--muted);transition:transform .15s}.ky-evidence[open]>summary>svg{transform:rotate(90deg)}.ky-evidence>summary b{color:var(--text)}.ky-evidence-body{padding:0 14px 14px;font-size:13.5px;line-height:1.75;color:var(--text-2)}.ky-evidence-body>p{margin:0 0 8px}.ky-ev-list{display:flex;flex-direction:column;gap:10px;margin:8px 0 0;padding:0;list-style:none}.ky-ev-item{padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-xs);background:var(--surface-2)}.ky-ev-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:4px 8px}.ky-ev-name{font-weight:650;color:var(--text);overflow-wrap:anywhere}.ky-ev-meta{display:flex;flex-wrap:wrap;gap:2px 12px;margin-top:2px;font-size:12.5px;color:var(--muted)}.ky-ev-quote{margin:6px 0 0;padding:6px 10px;border-left:3px solid var(--border-strong);background:var(--surface);font-family:var(--font-read);color:var(--text);overflow-wrap:anywhere}.ky-ruling{margin-top:10px;padding:10px 12px;border-radius:var(--radius-xs);background:var(--primary-soft);color:var(--primary-ink)}.ky-ruling small{display:block;margin-top:4px;color:var(--muted)}.ky-stale{color:var(--warning)}.ky-score{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 16px;margin:14px 0 0;padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface)}.ky-score-main{font-size:14px;font-weight:650;color:var(--text-2)}.ky-score-main b{margin:0 2px 0 6px;font-family:var(--font-num);font-size:26px;font-weight:750;color:var(--primary);font-variant-numeric:tabular-nums}.ky-score-parts{display:flex;flex-wrap:wrap;gap:2px 14px;font-size:13px;color:var(--text-2);font-variant-numeric:tabular-nums}.ky-score-rule{flex-basis:100%;font-size:12px;color:var(--muted)}.ky-score+p{margin-top:12px}@media (max-width: 900px){.ky-order-given,.ky-order-slot{min-width:44px;height:44px;padding:0 6px}.ky-order-given{min-width:60px}.opts.ky-compact{grid-template-columns:repeat(2,minmax(0,1fr))}.ky-group-switch button{padding:4px 10px}}@media (max-width: 480px){.ky-order-chain{gap:4px;padding:10px}.ky-order-arrow{font-size:11px}.letter-row.ky-letters .L.tf{min-width:0;flex:1}.ky-material-bar{gap:6px}.ky-score-main b{font-size:22px}}.profile-page{min-height:100dvh;display:grid;place-items:center;padding:28px 18px;background:var(--bg)}.profile-card{width:min(100%,460px);padding:40px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow)}.profile-brand{display:grid;place-items:center;width:54px;height:54px;background:var(--primary);color:var(--on-primary);font-size:27px;border-radius:16px;margin-bottom:28px}.profile-eyebrow{font-size:12px;color:var(--muted);margin-bottom:10px}.profile-card h1{font-size:clamp(23px,5vw,29px);line-height:1.35;margin:0 0 12px;letter-spacing:-.03em}.profile-description{color:var(--text-2);margin-bottom:28px;line-height:1.7}.profile-card form{display:grid;gap:12px}.profile-card label{font-size:13px;font-weight:600}.profile-card input{width:100%;min-height:48px;padding:12px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text);background:var(--surface-2);font:inherit}.profile-card form button{justify-content:center;margin-top:4px;width:100%}.profile-hint{font-size:12px;line-height:1.9;color:var(--muted);margin:24px 0 0}.profile-error{color:var(--danger);font-size:13px;margin-top:16px}.profile-bar{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:12px clamp(16px,3vw,36px);border-bottom:1px solid var(--border);background:var(--surface);font-size:13px}.profile-bar>span{min-width:0;display:flex;align-items:center;gap:4px;color:var(--muted);white-space:nowrap}.profile-bar strong{overflow:hidden;text-overflow:ellipsis;color:var(--text)}.profile-bar button{flex-shrink:0}@media (max-width: 480px){.profile-card{padding:28px 22px}}:root{--bg: #f5f4ef;--surface: #ffffff;--surface-2: #faf9f6;--surface-3: #f0eee8;--border: #e6e3db;--border-strong: #d4cfc4;--text: #191c25;--text-2: #3f4555;--muted: #646a7a;--faint: #8d93a2;--primary: #3b4bdb;--primary-hover: #2f3ec2;--primary-soft: #eceefd;--primary-soft-2: #d9ddfb;--primary-ink: #2a37a6;--on-primary: #ffffff;--violet: #7454e6;--violet-soft: #f0ebfd;--success: #13855a;--success-soft: #e4f4ec;--success-border: #a7d9c2;--danger: #cf3446;--danger-soft: #fdecee;--danger-border: #f2b5bd;--warning: #a86c0e;--warning-soft: #fcf3e1;--warning-border: #ecd19b;--star: #f0a20b;--hero-from: #2c37b0;--hero-via: #4352e0;--hero-to: #7b5cf0;--shadow-sm: 0 1px 2px rgba(23, 26, 44, .05);--shadow: 0 1px 2px rgba(23, 26, 44, .04), 0 6px 20px -6px rgba(23, 26, 44, .08);--shadow-lg: 0 30px 80px -20px rgba(23, 26, 44, .35);--ring: 0 0 0 3px rgba(59, 75, 219, .22);--radius-lg: 20px;--radius: 14px;--radius-sm: 10px;--radius-xs: 7px;--font-sans: "Inter", "Segoe UI Variable Text", "Segoe UI", "PingFang SC", "Microsoft YaHei UI", "Microsoft YaHei", system-ui, sans-serif;--font-read: Georgia, Cambria, "Times New Roman", "PingFang SC", "Microsoft YaHei", serif;--font-num: "Inter", "Segoe UI Variable Display", "Segoe UI", system-ui, sans-serif;--font-scale: 1;--sidebar: 248px;color-scheme:light}html[data-theme=dark]{--bg: #0d0f14;--surface: #151821;--surface-2: #191d27;--surface-3: #212633;--border: #262b37;--border-strong: #363c4c;--text: #e9ebf1;--text-2: #c5cad6;--muted: #979eaf;--faint: #6f7689;--primary: #8b96ff;--primary-hover: #a5adff;--primary-soft: #1c2040;--primary-soft-2: #2a3063;--primary-ink: #bcc2ff;--on-primary: #0d0f1a;--violet: #ad97ff;--violet-soft: #241d42;--success: #4cc38a;--success-soft: #11261d;--success-border: #22573f;--danger: #ff6b7b;--danger-soft: #2c1519;--danger-border: #6e2a35;--warning: #f0b450;--warning-soft: #2a2113;--warning-border: #6a4e1c;--star: #f7b733;--hero-from: #1d2370;--hero-via: #2c33a0;--hero-to: #5a3fc0;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .3);--shadow: 0 1px 2px rgba(0, 0, 0, .25), 0 8px 24px -8px rgba(0, 0, 0, .45);--shadow-lg: 0 30px 80px -10px rgba(0, 0, 0, .7);--ring: 0 0 0 3px rgba(139, 150, 255, .3);color-scheme:dark}*,*:before,*:after{box-sizing:border-box}html,body{margin:0;padding:0}html{scroll-behavior:smooth;scroll-padding-top:120px}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:15px;line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}svg{flex-shrink:0;vertical-align:middle}a{color:var(--primary);text-decoration:none}a:hover{color:var(--primary-hover)}h1,h2,h3,p{margin-top:0}h1,h2,h3{color:var(--text);letter-spacing:-.01em}h2{font-size:20px;font-weight:650}h3{font-size:16px;font-weight:650}::selection{background:var(--primary-soft-2)}.muted{color:var(--muted)}.small{font-size:13px}.nowrap{white-space:nowrap}.grow{flex:1}.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}.skip-link{position:fixed;left:16px;top:-100px;background:var(--primary);color:var(--on-primary);padding:10px 16px;border-radius:var(--radius-sm);z-index:200}.skip-link:focus{top:12px;color:var(--on-primary)}button,input,select,textarea{font:inherit;color:inherit}button,.button{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:38px;padding:8px 16px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text-2);font-size:14px;font-weight:550;line-height:1.3;cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s,color .15s,box-shadow .15s,transform .1s}button:hover,.button:hover{background:var(--surface-3);color:var(--text);border-color:var(--border-strong)}button:active:not(:disabled){transform:translateY(1px)}button.primary,.button.primary{background:var(--primary);border-color:var(--primary);color:var(--on-primary);box-shadow:0 1px 2px #1e288c40,inset 0 1px #ffffff1f}button.primary:hover,.button.primary:hover{background:var(--primary-hover);border-color:var(--primary-hover);color:var(--on-primary)}button.ghost{background:transparent;border-color:transparent;color:var(--muted)}button.ghost:hover{background:var(--surface-3);color:var(--text)}button.danger{background:var(--danger);border-color:var(--danger);color:#fff}button.danger:hover{filter:brightness(1.08);background:var(--danger);color:#fff}button.big{min-height:46px;padding:11px 22px;font-size:15px}button.sm{min-height:30px;padding:4px 10px;font-size:13px}button:disabled,button:disabled:hover{opacity:.45;cursor:not-allowed;transform:none}.icon-btn{width:38px;min-width:38px;padding:0}.text-button{min-height:0;border:0;background:none;padding:0 0 0 12px;color:var(--primary);font-size:13px;font-weight:550}.text-button:hover{background:none;color:var(--primary-hover);text-decoration:underline}input[type=text],input[type=search],input:not([type]),textarea,select{border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text);transition:border-color .15s,box-shadow .15s}select{-moz-appearance:none;appearance:none;-webkit-appearance:none;min-height:38px;padding:7px 34px 7px 12px;font-size:14px;cursor:pointer;max-width:100%;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23888' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 12px center}select:hover,input[type=text]:hover,textarea:hover{border-color:var(--faint)}textarea{padding:12px 14px;line-height:1.75}input[type=checkbox],input[type=radio]{width:17px;height:17px;accent-color:var(--primary);cursor:pointer;margin:0}:is(button,a,input,select,textarea,summary,[tabindex]):focus-visible{outline:2px solid var(--primary);outline-offset:2px}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;border-color:var(--primary);box-shadow:var(--ring)}input[type=range]{-webkit-appearance:none;-moz-appearance:none;appearance:none;height:6px;border-radius:99px;cursor:pointer;background:linear-gradient(to right,var(--primary) var(--fill, 0%),var(--surface-3) var(--fill, 0%))}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--surface);border:2px solid var(--primary);box-shadow:var(--shadow-sm);transition:transform .12s}input[type=range]:hover::-webkit-slider-thumb{transform:scale(1.15)}input[type=range]::-moz-range-thumb{width:14px;height:14px;border-radius:50%;background:var(--surface);border:2px solid var(--primary)}input[type=range]:disabled{opacity:.5;cursor:not-allowed}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;margin-bottom:20px;box-shadow:var(--shadow-sm)}.tag{display:inline-flex;align-items:center;gap:4px;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:550;line-height:1.6;border:1px solid var(--border);color:var(--muted);background:var(--surface-2);white-space:nowrap}.tag.ok{color:var(--success);background:var(--success-soft);border-color:var(--success-border)}.tag.warn{color:var(--warning);background:var(--warning-soft);border-color:var(--warning-border)}.tag.err{color:var(--danger);background:var(--danger-soft);border-color:var(--danger-border)}.tag.info{color:var(--primary-ink);background:var(--primary-soft);border-color:var(--primary-soft-2)}.tag-num{font-variant-numeric:tabular-nums;color:var(--faint);margin-left:4px}.chip-row{display:flex;flex-wrap:wrap;gap:6px}.tab-count{display:inline-flex;align-items:center;min-width:22px;justify-content:center;padding:0 7px;margin-left:8px;border-radius:99px;background:var(--surface-3);color:var(--muted);font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;line-height:20px}.progress-track{position:relative;height:6px;border-radius:99px;background:var(--surface-3);overflow:hidden;flex:1;min-width:40px}.progress-track>span{position:absolute;inset:0 auto 0 0;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--violet));transition:width .3s}.progress-track.lg{height:10px}.status-pill{display:inline-flex;align-items:center;gap:6px;padding:2px 10px;border-radius:99px;font-size:12px;font-weight:600;white-space:nowrap;background:var(--surface-3);color:var(--muted)}.status-pill:before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;opacity:.8}.status-pill.in_progress{background:var(--primary-soft);color:var(--primary-ink)}.status-pill.done{background:var(--success-soft);color:var(--success)}.status-pill.wrong{background:var(--danger-soft);color:var(--danger)}.empty-state{text-align:center;padding:56px 24px;color:var(--muted);list-style:none}.empty-state>svg{color:var(--faint);margin-bottom:14px}.empty-state h3{margin:0 0 6px}.empty-state p{font-size:14px;margin:0 0 14px}.loading{display:flex;align-items:center;justify-content:center;flex-direction:column;gap:14px;padding:90px 20px;text-align:center;color:var(--muted)}.spinner{width:26px;height:26px;border-radius:50%;border:3px solid var(--surface-3);border-top-color:var(--primary);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.notice{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:12px 16px;margin:12px 0 16px;border:1px solid var(--primary-soft-2);border-radius:var(--radius-sm);background:var(--primary-soft);color:var(--primary-ink);font-size:14px}.notice>span{display:inline-flex;align-items:center;gap:8px}.notice>button{flex-shrink:0}.notice.error{border-color:var(--danger-border);background:var(--danger-soft);color:var(--danger)}.notice button:not(.danger){min-height:32px;background:transparent;border-color:currentColor;color:inherit}.notice-actions{display:flex;gap:8px;flex-shrink:0}.hint{font-size:13px;color:var(--muted);margin:8px 0 0}.eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:650;letter-spacing:.08em;text-transform:uppercase;color:var(--primary)}.page-heading{margin:4px 0 28px}.page-heading h1{font-size:32px;font-weight:750;margin:10px 0 8px;letter-spacing:-.02em}.page-heading p{color:var(--muted);font-size:15px;margin:0;max-width:720px}.section-heading{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:18px}.section-heading h2{font-size:22px;font-weight:700;margin:0 0 4px}.section-heading p{font-size:14px;color:var(--muted);margin:0}.stat-icon{display:grid;place-items:center;width:42px;height:42px;border-radius:12px;flex:none}.stat-icon.indigo,.feature-icon.indigo{background:var(--primary-soft);color:var(--primary)}.stat-icon.violet,.feature-icon.violet{background:var(--violet-soft);color:var(--violet)}.stat-icon.amber{background:var(--warning-soft);color:var(--warning)}.stat-icon.green{background:var(--success-soft);color:var(--success)}.stat-tile{display:flex;gap:14px;align-items:flex-start;padding:20px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);min-width:0}.stat-tile>div{display:flex;flex-direction:column;min-width:0}.stat-label{font-size:13px;color:var(--muted);font-weight:550}.stat-tile strong{font-family:var(--font-num);font-size:28px;font-weight:700;line-height:1.25;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--text)}.stat-tile strong small{font-size:13px;font-weight:550;color:var(--muted);margin-left:4px;letter-spacing:0}.stat-caption{font-size:13px;color:var(--muted)}.ok-text{color:var(--success);font-weight:650}.bad-text{color:var(--danger);font-weight:650}.num{font-variant-numeric:tabular-nums}.app{min-height:100vh}.sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);z-index:60;display:flex;flex-direction:column;padding:26px 16px 18px;background:var(--surface);border-right:1px solid var(--border)}.brand{display:flex;align-items:center;gap:12px;padding:0 8px;color:var(--text);white-space:nowrap}.brand:hover{color:var(--text)}.brand-mark{display:grid;place-items:center;flex:none;width:40px;height:40px;border-radius:12px;background:linear-gradient(135deg,#3b4bdb,#7b5cf0);color:#fff;font-weight:800;font-size:20px;box-shadow:0 6px 16px -6px #3b4bdbb3,inset 0 1px #ffffff40}.brand-text{display:flex;flex-direction:column;font-size:17px;font-weight:750;letter-spacing:.02em;line-height:1.25}.brand-text small{font-size:11px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--faint);margin-top:3px}.main-nav{display:flex;flex-direction:column;gap:4px;margin-top:34px}.main-nav a{position:relative;display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:var(--radius-sm);color:var(--muted);font-size:15px;font-weight:550;transition:background .15s,color .15s}.main-nav a:hover{background:var(--surface-3);color:var(--text)}.main-nav a.active{background:var(--primary-soft);color:var(--primary-ink);font-weight:650}.main-nav a.active:before{content:"";position:absolute;left:-16px;top:8px;bottom:8px;width:3px;border-radius:0 3px 3px 0;background:var(--primary)}.nav-label-short{display:none}.sidebar-bottom{margin-top:auto;display:flex;flex-direction:column;gap:12px}.sidebar-quote{display:flex;gap:10px;padding:14px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--primary-soft),var(--violet-soft));color:var(--primary-ink)}.sidebar-quote span{display:block;font-size:13px;font-weight:600}.sidebar-quote small{display:block;font-family:var(--font-read);font-style:italic;font-size:12px;opacity:.75;margin-top:2px}.theme-toggle:not(.icon-btn){justify-content:flex-start;width:100%;background:transparent;border-color:var(--border);color:var(--muted);font-size:14px}.local-status{display:flex;gap:8px;align-items:center;font-size:12px;color:var(--faint);padding:0 4px}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--success);box-shadow:0 0 0 3px var(--success-soft)}.mobile-theme{display:none}.workspace{margin-left:var(--sidebar);min-height:100vh;display:flex;flex-direction:column}main{flex:1;width:100%;max-width:1320px;margin:0 auto;padding:36px 44px 28px;min-width:0;outline:none}.workspace-footer{display:flex;justify-content:space-between;gap:16px;width:100%;max-width:1320px;margin:0 auto;padding:22px 44px 28px;font-size:12px;color:var(--faint);border-top:1px solid var(--border)}.is-practicing{--sidebar: 0px}.is-practicing .sidebar{display:none}.is-practicing main{max-width:1680px;padding:0 32px 40px}.hero{position:relative;overflow:hidden;isolation:isolate;--hero-glow: rgba(46, 56, 180, .8);--hero-ink: #2a35a8;display:grid;grid-template-columns:minmax(0,1fr) 360px;grid-template-areas:"top top" "main card";gap:28px 32px;align-items:center;padding:32px 40px 40px;margin-bottom:22px;border-radius:var(--radius-lg);background:linear-gradient(125deg,var(--hero-from) 0%,var(--hero-via) 50%,var(--hero-to) 100%);color:#fff;box-shadow:0 24px 50px -28px var(--hero-glow)}.hero.cet4{--hero-from: #0b5d70;--hero-via: #12839a;--hero-to: #3478d4;--hero-glow: rgba(14, 108, 128, .75);--hero-ink: #0b5566}html[data-theme=dark] .hero.cet4{--hero-from: #073846;--hero-via: #0b5262;--hero-to: #1c4b90}.hero.kaoyan{--hero-from: #1f5a47;--hero-via: #2a6f55;--hero-to: #387f5d;--hero-glow: rgba(31, 90, 71, .7);--hero-ink: #1d4b3c}html[data-theme=dark] .hero.kaoyan{--hero-from: #0e3328;--hero-via: #154736;--hero-to: #205942}.hero.kaoyan .hero-cta:hover{background:#eef7f1;border-color:#eef7f1}.hero-top{grid-area:top;display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:14px 20px}.hero-main{grid-area:main}.hero-card{grid-area:card}.hero-watermark{position:absolute;z-index:-1;right:400px;bottom:-34px;font-family:var(--font-num);font-size:168px;font-weight:800;letter-spacing:-.04em;line-height:1;color:#ffffff12;white-space:nowrap;pointer-events:none;-webkit-user-select:none;user-select:none}.exam-switch{display:inline-flex;gap:6px;padding:5px;border-radius:18px;background:#ffffff1a;border:1px solid rgba(255,255,255,.22);box-shadow:inset 0 1px #ffffff24}.exam-switch button{min-height:0;gap:12px;padding:7px 24px 7px 7px;border:0;border-radius:13px;background:transparent;color:#fffc;text-align:left}.exam-switch button:hover{background:#ffffff24;color:#fff}.exam-switch button.active{background:#fff;color:var(--hero-ink);box-shadow:0 10px 24px -10px #080c3c8c}.exam-switch button:focus-visible{outline-color:#fff}.exam-num{display:grid;place-items:center;width:40px;height:40px;border-radius:11px;background:#ffffff29;font-family:var(--font-num);font-size:22px;font-weight:800}.exam-switch button.active .exam-num{background:linear-gradient(135deg,var(--hero-from),var(--hero-to));color:#fff}.exam-label{display:flex;flex-direction:column;line-height:1.25}.exam-label b{font-size:17px;font-weight:750}.exam-label small{font-size:12px;font-weight:650;letter-spacing:.1em;opacity:.75}.library-page>:not(.hero),.hero-main p,.hero-card{transition:opacity .2s}.library-page.switching>:not(.hero),.library-page.switching .hero-main p,.library-page.switching .hero-card{opacity:.45;pointer-events:none}.hero:before,.hero:after{content:"";position:absolute;z-index:-1;border-radius:50%}.hero:before{width:420px;height:420px;right:-120px;top:-200px;background:radial-gradient(circle,rgba(255,255,255,.22),transparent 65%)}.hero:after{width:300px;height:300px;left:30%;bottom:-220px;background:radial-gradient(circle,rgba(255,190,120,.28),transparent 65%)}.hero-kicker{display:inline-flex;align-items:center;gap:7px;padding:5px 12px;border-radius:99px;background:#ffffff24;border:1px solid rgba(255,255,255,.2);font-size:13px;font-weight:550}.hero h1{color:#fff;font-size:clamp(28px,2.8vw,38px);font-weight:750;line-height:1.3;letter-spacing:-.02em;margin:0 0 12px}.hero p{color:#ffffffd1;font-size:15px;margin:0;max-width:520px}.hero p b{color:#fff;font-weight:700}.hero-card{display:flex;flex-direction:column;gap:8px;padding:22px;border-radius:var(--radius);background:#ffffff1f;border:1px solid rgba(255,255,255,.24);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);box-shadow:inset 0 1px #fff3}.hero-card-label{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:#ffffffd9}.hero-card-title{font-size:20px;font-weight:700}.hero-card-meta{font-size:13px;color:#ffffffbf}.hero-progress{display:flex;align-items:center;gap:10px;font-size:13px;color:#ffffffd9;font-variant-numeric:tabular-nums;margin-top:4px}.hero-progress .progress-track{background:#fff3}.hero-progress .progress-track>span{background:#fff}.hero-cta{margin-top:8px;min-height:44px;background:#fff;border-color:#fff;color:var(--hero-ink);font-weight:700;font-size:15px}.hero-cta:hover{background:#f1f2ff;border-color:#f1f2ff;color:var(--hero-ink)}.stat-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;margin-bottom:40px}.library-toolbar{display:flex;flex-wrap:wrap;gap:12px;align-items:center;padding:12px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.search-field{display:flex;align-items:center;gap:10px;flex:1 1 240px;min-width:200px;padding:0 12px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border);color:var(--faint);transition:border-color .15s,box-shadow .15s}.search-field:focus-within{border-color:var(--primary);box-shadow:var(--ring)}.search-field input{flex:1;min-width:0;border:0;outline:0;box-shadow:none!important;background:transparent;padding:9px 0;font-size:14px}.search-field input::placeholder{color:var(--faint)}.search-field button{min-height:0;padding:4px;border:0;background:transparent;color:var(--muted)}.segmented{display:inline-flex;gap:2px;padding:3px;border-radius:var(--radius-sm);background:var(--surface-3)}.segmented button{min-height:32px;padding:4px 12px;border:0;border-radius:8px;background:transparent;color:var(--muted);font-size:14px}.segmented button span{margin-left:6px;font-size:12px;color:var(--faint);font-variant-numeric:tabular-nums}.segmented button:hover{background:transparent;color:var(--text)}.segmented button.active{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}.segmented button.active span{color:var(--primary)}.filter-selects{display:flex;gap:8px;flex-wrap:wrap}.filter-selects select{background-color:var(--surface-2)}.library-meta{display:flex;justify-content:space-between;align-items:center;padding:16px 4px 14px;font-size:14px;color:var(--muted)}.library-meta b{color:var(--text);font-variant-numeric:tabular-nums}.exam-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:18px}.exam-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);overflow:hidden;transition:box-shadow .2s,border-color .2s,transform .2s}.exam-card:hover{box-shadow:var(--shadow);border-color:var(--border-strong)}.exam-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px 12px}.exam-date{display:flex;align-items:baseline;gap:8px}.exam-year{font-family:var(--font-num);font-size:24px;font-weight:750;letter-spacing:-.03em;font-variant-numeric:tabular-nums}.exam-month{font-size:15px;font-weight:650;color:var(--primary);padding:1px 8px;border-radius:6px;background:var(--primary-soft)}.exam-count{font-size:13px;color:var(--faint)}.set-list{list-style:none;margin:0;padding:0 8px 8px;display:flex;flex-direction:column;gap:2px}.set-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:12px;align-items:center;padding:12px 10px;border-radius:var(--radius-sm);border-top:1px solid var(--border);transition:background .15s}.set-row:first-child{border-top-color:transparent}.set-row:hover{background:var(--surface-2)}.set-row:hover+.set-row{border-top-color:transparent}.set-no{display:flex;align-items:baseline;justify-content:center;gap:1px;width:52px;height:44px;padding-top:7px;border-radius:10px;background:var(--surface-3);color:var(--text-2);font-family:var(--font-num);font-size:20px;font-weight:750}.set-no small{font-size:10px;font-weight:600;color:var(--faint)}.set-row.in_progress .set-no{background:var(--primary-soft);color:var(--primary)}.set-row.done .set-no{background:var(--success-soft);color:var(--success)}.set-info{min-width:0;display:flex;flex-direction:column;gap:3px}.set-title{display:flex;align-items:center;gap:8px}.set-title b{font-size:15px;font-weight:650}.set-meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 12px;font-size:13px;color:var(--muted)}.audio-label{display:inline-flex;align-items:center;gap:4px;color:var(--faint)}.audio-label.available{color:var(--muted)}.missing-chip{padding:0 7px;border-radius:6px;font-size:12px;color:var(--warning);background:var(--warning-soft)}.set-progress{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;margin-top:3px;max-width:220px}.set-actions{display:flex;flex-direction:column;align-items:flex-end;gap:2px}.paper-action{min-height:34px;padding:6px 12px;font-size:14px;gap:5px}.paper-action:not(.primary){background:var(--surface)}.paper-action:not(.primary):hover{background:var(--primary-soft);border-color:var(--primary-soft-2);color:var(--primary-ink)}.restart-link{min-height:0;border:0;padding:2px 4px;background:transparent;font-size:12px;font-weight:500;color:var(--faint)}.restart-link:hover{background:transparent;color:var(--primary)}.library-footnote{display:flex;align-items:center;gap:9px;font-size:13px;color:var(--muted);margin-top:28px}.library-footnote svg{color:var(--success)}.section-heading.has-tracks{flex-wrap:wrap}.track-filter .track-years{margin-left:4px;font-size:11px;color:var(--faint);font-variant-numeric:tabular-nums}.exam-card.kaoyan .exam-month{color:#1f6b50;background:#e2f2ea}html[data-theme=dark] .exam-card.kaoyan .exam-month{color:#7fd3ac;background:#12291f}.set-no.track{align-items:center;padding-top:0;font-family:var(--font-sans);font-size:15px;font-weight:700;letter-spacing:.04em}.check-chip{padding:0 7px;border-radius:6px;font-size:12px;color:var(--muted);background:var(--surface-3);font-variant-numeric:tabular-nums}.check-chip.ok{color:var(--success);background:var(--success-soft)}.check-chip.warn{color:var(--warning);background:var(--warning-soft)}.practice-page{--practice-toolbar-height: 140px;--practice-rail-width: 264px;--question-nav-height: 0px}.practice-toolbar{position:sticky;top:0;z-index:44;margin:0 -32px 22px;padding:14px 32px 0;background:color-mix(in srgb,var(--bg) 88%,transparent);-webkit-backdrop-filter:saturate(1.4) blur(14px);backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid var(--border)}.practice-head{display:flex;align-items:center;flex-wrap:wrap;gap:12px 14px;margin-bottom:12px}.practice-title{display:flex;flex-direction:column;min-width:0;margin-right:auto}.practice-title .title{font-size:18px;font-weight:700;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.practice-title>span{display:flex;align-items:center;flex-wrap:wrap;gap:4px 10px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}.saved-tip{display:inline-flex;align-items:center;gap:3px;font-style:normal;color:var(--success)}.timer{display:inline-flex;align-items:center;gap:7px;padding:7px 14px;border-radius:99px;background:var(--surface);border:1px solid var(--border);font-family:var(--font-num);font-size:16px;font-weight:650;font-variant-numeric:tabular-nums;color:var(--text);box-shadow:var(--shadow-sm)}.timer svg{color:var(--primary)}.practice-actions{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.font-ctl{display:inline-flex;align-items:center;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);overflow:hidden}.font-ctl button{min-height:36px;padding:0 11px;border:0;border-radius:0;background:transparent;font-weight:700}.font-ctl button sup{font-size:11px;margin-left:1px}.font-ctl span{min-width:44px;text-align:center;font-size:12px;color:var(--muted);font-variant-numeric:tabular-nums;border-inline:1px solid var(--border);line-height:36px}.submit-btn{padding-inline:20px}.submitted-tag{padding:6px 12px;font-size:13px}.section-tabs{display:flex;gap:4px;overflow-x:auto;scrollbar-width:none;margin:0 -4px;padding:0 4px}.section-tabs::-webkit-scrollbar{display:none}.section-tabs button{position:relative;flex:none;min-height:42px;gap:8px;padding:8px 14px 10px;border:0;border-radius:10px 10px 0 0;background:transparent;color:var(--muted);font-size:14px}.section-tabs button small{padding:0 7px;border-radius:99px;background:var(--surface-3);color:var(--faint);font-size:12px;font-weight:600;font-variant-numeric:tabular-nums;line-height:19px}.section-tabs button.complete small{background:var(--success-soft);color:var(--success)}.section-tabs button:hover{background:var(--surface-3);color:var(--text)}.section-tabs button.active{color:var(--primary-ink);font-weight:650}.section-tabs button.active:after{content:"";position:absolute;left:10px;right:10px;bottom:0;height:3px;border-radius:3px 3px 0 0;background:var(--primary)}.section-tabs button.active small{background:var(--primary-soft);color:var(--primary)}.toolbar-progress{height:2px;margin:0 -32px;background:transparent}.toolbar-progress span{display:block;height:100%;background:linear-gradient(90deg,var(--primary),var(--violet));transition:width .4s}.audio-bar{display:flex;align-items:center;flex-wrap:wrap;gap:14px;margin:4px 0 12px;padding:10px 16px 10px 10px;border-radius:99px;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.audio-bar .play{width:44px;height:44px;min-height:44px;padding:0;border-radius:50%;border:0;background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff;box-shadow:0 6px 14px -6px #3b4bdbcc}html[data-theme=dark] .audio-bar .play{color:#0d0f1a}.audio-bar .play:hover{filter:brightness(1.08);background:linear-gradient(135deg,var(--primary),var(--violet));color:#fff}.audio-bar .play svg{margin-left:2px}.audio-bar .play.playing svg{margin-left:0}.audio-main{flex:1 1 240px;min-width:180px;display:flex;flex-direction:column;gap:6px}.audio-caption{display:flex;justify-content:space-between;font-size:13px;color:var(--muted)}.audio-caption>span:first-child{display:inline-flex;align-items:center;gap:6px;font-weight:600;color:var(--text-2)}.audio-time{font-variant-numeric:tabular-nums;color:var(--text);font-weight:600}.audio-time i{font-style:normal;color:var(--faint);margin:0 2px}.audio-progress{width:100%}.audio-volume{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}.audio-volume input{width:84px}.audio-rate select{min-height:34px;padding:4px 30px 4px 12px;border-radius:99px;font-size:13px;font-weight:600;background-color:var(--surface-2)}.no-audio-bar{border-radius:var(--radius-sm);padding:12px 16px;background:var(--warning-soft);border-color:var(--warning-border)}.no-audio{display:inline-flex;align-items:center;gap:8px;color:var(--warning);font-size:14px;font-weight:550}.audio-error{flex-basis:100%;color:var(--danger);font-size:13px;padding-left:58px}.split{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start;font-size:calc(16px * var(--font-scale))}.split .material{position:sticky;top:calc(var(--practice-toolbar-height) + 16px);max-height:calc(100dvh - var(--practice-toolbar-height) - 32px);overflow:auto;border-radius:var(--radius);scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}.split .material .card{margin-bottom:0}.questions-col{min-width:0}.material-card{padding:26px 28px}.material-head{display:flex;align-items:center;gap:8px;margin-bottom:16px;font-family:var(--font-sans);font-size:13px;font-weight:650;letter-spacing:.04em;color:var(--primary)}.material-head.sub{margin:26px 0 10px;padding-top:18px;border-top:1px dashed var(--border-strong);color:var(--muted)}.passage-title{font-family:var(--font-read);font-size:1.25em;margin-bottom:12px}.directions{color:var(--muted);font-style:italic;font-family:var(--font-read);font-size:.88em;line-height:1.75;margin-bottom:20px;padding:12px 16px;background:var(--surface-2);border-left:3px solid var(--border-strong);border-radius:0 var(--radius-xs) var(--radius-xs) 0;white-space:pre-wrap}.passage{font-family:var(--font-read);font-size:1.06em;line-height:1.95;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text)}.passage .para{margin-bottom:14px}.passage .p-label{display:inline-grid;place-items:center;min-width:26px;height:26px;margin-right:10px;padding:0 6px;border-radius:7px;background:var(--primary-soft);color:var(--primary);font-family:var(--font-sans);font-size:.78em;font-weight:700;vertical-align:2px}.sec-divider{display:flex;align-items:center;gap:12px;margin:28px 0 16px;font-weight:650;font-size:14px;color:var(--primary);font-family:var(--font-sans)}.sec-divider:after{content:"";flex:1;height:1px;background:var(--border)}.word-bank{display:flex;flex-wrap:wrap;gap:8px}.word-bank .word{display:inline-flex;align-items:center;gap:7px;padding:5px 11px 5px 5px;border:1px solid var(--border);border-radius:99px;background:var(--surface-2);font-family:var(--font-read);font-size:.92em;-webkit-user-select:none;user-select:none;transition:opacity .2s}.word-bank .word .k{display:grid;place-items:center;width:22px;height:22px;border-radius:50%;background:var(--primary-soft);color:var(--primary);font-family:var(--font-sans);font-size:12px;font-weight:700}.word-bank .word.used{opacity:.38;text-decoration:line-through}.blank-slot{display:inline-flex;align-items:baseline;gap:6px;min-width:72px;min-height:0;margin:0 3px;padding:0 10px;vertical-align:baseline;border:0;border-bottom:2px solid var(--primary);border-radius:6px 6px 0 0;background:var(--primary-soft);color:var(--primary-ink);font-family:var(--font-sans);font-size:.9em;font-weight:700;line-height:1.7}.blank-slot small{font-size:11px;font-weight:600;color:var(--faint)}.blank-slot:not(.has-val){color:var(--faint);justify-content:center}.blank-slot.has-val{background:var(--primary-soft-2)}.blank-slot:hover{background:var(--primary-soft-2);color:var(--primary-ink)}.blank-slot.active{background:var(--primary);color:var(--on-primary);box-shadow:var(--ring)}.blank-slot.active small{color:inherit;opacity:.75}.listen-groups{display:flex;flex-direction:column;gap:10px;margin:14px 0 20px}.listen-group{padding:12px 14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-2)}.listen-group-head{display:flex;align-items:center;gap:10px;font-family:var(--font-sans);font-size:14px}.transcript{margin-top:12px;padding-top:12px;border-top:1px dashed var(--border-strong);max-height:340px;overflow:auto}.transcript-line{margin-bottom:10px}.transcript-line .en{font-family:var(--font-read);line-height:1.7}.transcript-line .cn{font-size:.88em;color:var(--muted);line-height:1.7}.qnav-card{padding:14px 16px 16px;margin-bottom:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm)}.qnav-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:10px;font-size:13px;font-weight:650;color:var(--text-2)}.qnav-legend{display:inline-flex;align-items:center;gap:6px;font-size:12px;font-weight:500;color:var(--muted)}.qnav-legend .lg{display:inline-block;width:10px;height:10px;margin-left:6px;border-radius:3px;border:1px solid var(--border-strong);background:var(--surface)}.qnav-legend .lg.answered{background:var(--primary);border-color:var(--primary)}.qnav-legend .lg.correct{background:var(--success);border-color:var(--success)}.qnav-legend .lg.wrong{background:var(--danger);border-color:var(--danger)}.qnav-legend .lg.fav{background:var(--star);border-color:var(--star);border-radius:50%}.qnav{display:flex;flex-wrap:wrap;gap:7px}.qnav .qn{position:relative;width:38px;height:38px;min-height:0;padding:0;border-radius:10px;border:1px solid var(--border-strong);background:var(--surface);color:var(--muted);font-size:14px;font-weight:600;font-variant-numeric:tabular-nums}.qnav .qn:hover{border-color:var(--primary);color:var(--primary);background:var(--surface)}.qnav .qn.answered{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}.qnav .qn.correct{background:var(--success);border-color:var(--success);color:#fff}.qnav .qn.wrong{background:var(--danger);border-color:var(--danger);color:#fff}.qnav .qn.nokey{background:var(--warning-soft);border-color:var(--warning-border);color:var(--warning)}html[data-theme=dark] .qnav .qn.correct,html[data-theme=dark] .qnav .qn.wrong{color:#0d0f14}.qnav .qn.current{box-shadow:0 0 0 2px var(--bg),0 0 0 4px var(--primary)}.qnav .qn.fav:after{content:"";position:absolute;top:-4px;right:-4px;width:10px;height:10px;border-radius:50%;background:var(--star);border:2px solid var(--surface)}.redo-paper-switch{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:14px;padding:12px 14px;border-radius:var(--radius-sm);background:var(--primary-soft)}.redo-paper-switch label{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--primary-ink)}.qcard{padding:22px 24px;margin-bottom:16px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-sm);scroll-margin-top:calc(var(--practice-toolbar-height) + 20px);transition:border-color .2s,box-shadow .2s}.qcard.current-q{border-color:var(--primary-soft-2);box-shadow:0 0 0 3px var(--primary-soft),var(--shadow)}.qhead{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:14px;font-family:var(--font-sans)}.qno{display:inline-grid;place-items:center;min-width:34px;height:34px;padding:0 8px;border-radius:10px;background:var(--text);color:var(--bg);font-size:15px;font-weight:700;font-variant-numeric:tabular-nums}.qcard.verdict-correct .qno{background:var(--success);color:#fff}.qcard.verdict-wrong .qno{background:var(--danger);color:#fff}.review-answer{display:flex;flex-wrap:wrap;gap:8px 20px;margin:0 0 14px;padding:9px 12px;border-radius:8px;background:var(--surface-2);color:var(--text-2);font-size:13px}.qno.sm{min-width:28px;height:28px;font-size:13px;border-radius:8px}.fav-btn{margin-left:auto;width:36px;height:36px;min-height:0;padding:0;border:0;border-radius:50%;background:transparent;color:var(--faint)}.fav-btn:hover{background:var(--warning-soft);color:var(--star)}.fav-btn.on{color:var(--star)}.stem{margin:4px 0 16px;font-family:var(--font-read);font-size:1.04em;line-height:1.8;white-space:pre-wrap;overflow-wrap:anywhere;color:var(--text)}.stem.muted{color:var(--text-2)}.blank-ref{display:inline-block;margin:0 4px;padding:0 9px;border-radius:6px;background:var(--primary-soft);color:var(--primary-ink);font-family:var(--font-sans);font-size:.85em}.opts{display:flex;flex-direction:column;gap:9px}.opt{display:flex;align-items:flex-start;gap:14px;width:100%;min-height:0;padding:12px 16px 12px 12px;text-align:left;white-space:normal;border:1px solid var(--border);border-radius:12px;background:var(--surface);color:var(--text);font-family:var(--font-read);font-size:inherit;font-weight:400;line-height:1.6}.opt:hover{border-color:var(--primary);background:var(--primary-soft);color:var(--text)}.opt .okey{display:grid;place-items:center;flex:none;width:28px;height:28px;margin-top:-1px;border-radius:50%;border:1.5px solid var(--border-strong);color:var(--muted);font-family:var(--font-sans);font-size:13px;font-weight:700;transition:all .15s}.opt .otext{flex:1;min-width:0;overflow-wrap:anywhere;padding-top:1px}.opt.selected{border-color:var(--primary);background:var(--primary-soft);box-shadow:inset 0 0 0 1px var(--primary)}.opt.selected .okey{background:var(--primary);border-color:var(--primary);color:var(--on-primary)}.opt.correct{border-color:var(--success);background:var(--success-soft);box-shadow:inset 0 0 0 1px var(--success)}.opt.correct .okey{background:var(--success);border-color:var(--success);color:#fff}.opt.wrong{border-color:var(--danger);background:var(--danger-soft);box-shadow:inset 0 0 0 1px var(--danger)}.opt.wrong .okey{background:var(--danger);border-color:var(--danger);color:#fff}html[data-theme=dark] .opt.correct .okey,html[data-theme=dark] .opt.wrong .okey{color:#0d0f14}.opt:disabled{opacity:1;cursor:default}.opt:disabled:hover:not(.selected):not(.correct):not(.wrong){border-color:var(--border);background:var(--surface)}.opt .verdict{display:inline-flex;align-items:center;gap:3px;flex:none;margin-left:auto;padding:2px 8px;border-radius:99px;font-family:var(--font-sans);font-size:12px;font-weight:650;color:var(--success);background:var(--surface)}.opt.wrong .verdict{color:var(--danger)}.letter-row{display:flex;flex-wrap:wrap;gap:7px;margin:12px 0 0}.letter-row .L{width:42px;height:42px;min-height:0;padding:0;border-radius:10px;border:1px solid var(--border-strong);background:var(--surface);color:var(--text-2);font-size:15px;font-weight:650}.letter-row .L:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-soft)}.letter-row .L.selected{background:var(--primary);border-color:var(--primary);color:var(--on-primary);box-shadow:0 4px 10px -4px #3b4bdb99}.letter-row .L:disabled:hover:not(.selected){background:var(--surface);border-color:var(--border-strong);color:var(--text-2)}textarea.essay{width:100%;min-height:200px;margin-top:12px;font-family:var(--font-read);font-size:.98em;line-height:1.85;resize:vertical;background:var(--surface-2)}.qactions{display:flex;flex-wrap:wrap;align-items:center;gap:6px 14px;margin-top:16px;padding-top:14px;border-top:1px solid var(--border);font-family:var(--font-sans)}.qactions button.ghost{margin-left:-10px;color:var(--primary);font-size:14px}.qactions button.ghost:hover{background:var(--primary-soft);color:var(--primary-ink)}.pdf-link{display:inline-flex;align-items:center;gap:5px;font-size:13px;color:var(--muted)}.pdf-link:hover{color:var(--primary)}.analysis{margin-top:16px;padding:18px 20px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border);font-family:var(--font-sans);font-size:.92em;line-height:1.85;overflow-wrap:anywhere}.answer-line{display:flex;flex-wrap:wrap;gap:10px 28px;padding-bottom:14px;margin-bottom:4px;border-bottom:1px dashed var(--border-strong)}.answer-key{display:flex;flex-direction:column;gap:2px}.answer-key small{font-size:12px;font-weight:600;color:var(--muted)}.answer-key b{font-size:1.15em}.answer-key .tag{align-self:flex-start;margin-top:4px}.answer-line .ok{color:var(--success)}.answer-line .bad{color:var(--danger)}.source-line{margin-top:10px}.analysis-title{display:flex;align-items:center;gap:6px;margin:16px 0 6px;font-size:13px;font-weight:700;letter-spacing:.04em;color:var(--primary)}.analysis-text{white-space:pre-wrap;color:var(--text-2);max-height:520px;overflow:auto}.model-essay{padding:16px 18px;border-radius:var(--radius-xs);background:var(--surface);border:1px solid var(--border);font-family:var(--font-read);font-size:1.04em;line-height:1.9}.note-box{margin-top:18px;padding-top:4px;border-top:1px dashed var(--border-strong)}textarea.essay.note{min-height:84px;margin-top:4px;background:var(--surface);font-family:var(--font-sans);font-size:14px}.note-status{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-top:6px}.note-status button{min-height:28px;font-size:12px;padding:2px 8px}.pdf-prose{white-space:normal;line-height:1.9;overflow-wrap:break-word;word-break:normal}.pdf-prose p{margin:0 0 1em}.pdf-prose p:last-child{margin-bottom:0}.subjective-prompt{font-family:var(--font-read)}.prompt-source{font-family:var(--font-sans);font-size:13px;color:var(--muted);line-height:1.7;padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--border)}.prompt-instructions{font-size:.92em;color:var(--muted);margin-bottom:22px}.prompt-body{font-size:1.04em;line-height:2}.result-hero{display:grid;grid-template-columns:auto minmax(0,1fr) minmax(260px,380px);gap:32px;align-items:center;padding:28px 32px;margin-bottom:24px;background:linear-gradient(135deg,var(--surface),var(--primary-soft))}.result-ring{position:relative;width:148px;height:148px}.result-ring svg{width:100%;height:100%;transform:rotate(-90deg)}.result-ring circle{fill:none;stroke-width:11}.ring-track{stroke:var(--surface-3)}.ring-value{stroke:var(--primary);stroke-linecap:round;transition:stroke-dasharray .8s}.ring-label{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center}.ring-label b{font-family:var(--font-num);font-size:28px;font-weight:750;letter-spacing:-.03em}.ring-label span{font-size:12px;color:var(--muted)}.result-body h2{font-size:22px;margin-bottom:4px}.result-body>p{font-size:13px;margin-bottom:16px}.result-stats{display:flex;flex-wrap:wrap;gap:10px}.result-stats .rs{display:flex;flex-direction:column;min-width:86px;padding:10px 14px;border-radius:var(--radius-sm);background:var(--surface);border:1px solid var(--border)}.result-stats .rs b{font-family:var(--font-num);font-size:22px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.3}.result-stats .rs span{font-size:12px;color:var(--muted)}.result-stats .rs.correct b{color:var(--success)}.result-stats .rs.wrong b{color:var(--danger)}.result-sections{display:flex;flex-direction:column;gap:12px}.rsec-head{display:flex;justify-content:space-between;gap:10px;font-size:13px;margin-bottom:5px}.rsec-head span:first-child{font-weight:650}.rsec-head span:last-child{color:var(--muted);font-variant-numeric:tabular-nums}.rsec-bar{display:flex;height:8px;border-radius:99px;background:var(--surface-3);overflow:hidden}.rsec-bar i.c{background:var(--success)}.rsec-bar i.w{background:var(--danger)}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;z-index:90;display:flex;align-items:flex-start;justify-content:center;padding:48px 20px;overflow:auto;background:#0c0e1a80;-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);animation:fade .18s ease-out}.modal-dialog{width:100%;max-width:1080px;padding:26px 28px;border-radius:var(--radius-lg);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-lg);outline:0;animation:rise .22s ease-out}@keyframes fade{0%{opacity:0}}@keyframes rise{0%{opacity:0;transform:translateY(12px) scale(.98)}}.modal-head{display:flex;align-items:center;gap:12px;padding-bottom:16px;border-bottom:1px solid var(--border)}.modal-title{display:flex;flex-direction:column}.modal-title small{font-size:13px;color:var(--muted)}.modal-title b{font-size:19px}.modal-close{margin-left:auto;border-radius:50%}.modal-columns{display:grid;grid-template-columns:minmax(0,44fr) minmax(0,56fr);gap:22px;margin-top:20px;font-size:15px}.modal-columns .card,.modal-question .qcard{box-shadow:none}.modal-question>.analysis,.modal-question>.pdf-link{margin-bottom:14px;display:flex}.modal-question .opt{cursor:default}.modal-question .opt:hover:not(.correct){border-color:var(--border);background:var(--surface)}.confirm-dialog{max-width:460px;margin-top:10vh;text-align:center;padding:30px}.confirm-icon{display:inline-grid;place-items:center;width:54px;height:54px;border-radius:16px;background:var(--primary-soft);color:var(--primary);margin-bottom:14px}.confirm-dialog h3{font-size:20px;margin-bottom:16px}.confirm-dialog p{font-size:13px;line-height:1.7}.confirm-progress{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;margin-bottom:16px}.confirm-progress div{display:flex;flex-direction:column;padding:10px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border)}.confirm-progress b{font-family:var(--font-num);font-size:20px;font-variant-numeric:tabular-nums}.confirm-progress span{font-size:12px;color:var(--muted)}.confirm-actions{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:20px}.confirm-actions button{min-height:44px}.review-summary{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:26px}.mini-stat{display:flex;align-items:center;gap:14px;padding:16px 18px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.mini-stat>svg{box-sizing:content-box;padding:10px;border-radius:12px}.mini-stat.danger>svg{background:var(--danger-soft);color:var(--danger)}.mini-stat.amber>svg{background:var(--warning-soft);color:var(--star)}.mini-stat.indigo>svg{background:var(--primary-soft);color:var(--primary)}.mini-stat.violet>svg{background:var(--violet-soft);color:var(--violet)}.mini-stat div{display:flex;flex-direction:column}.mini-stat b{font-family:var(--font-num);font-size:24px;font-weight:700;line-height:1.2;font-variant-numeric:tabular-nums}.mini-stat span{font-size:13px;color:var(--muted)}.tabs{display:flex;gap:4px;margin-bottom:18px;border-bottom:1px solid var(--border);overflow-x:auto;scrollbar-width:none}.tabs button{position:relative;min-height:44px;padding:8px 16px 10px;border:0;border-radius:10px 10px 0 0;background:transparent;color:var(--muted);font-size:15px}.tabs button:hover{background:var(--surface-3);color:var(--text)}.tabs button.active{color:var(--primary-ink);font-weight:650}.tabs button.active:after{content:"";position:absolute;left:12px;right:12px;bottom:-1px;height:3px;border-radius:3px 3px 0 0;background:var(--primary)}.tabs button.active .tab-count{background:var(--primary-soft);color:var(--primary)}.review-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 14px;margin-bottom:14px}.check-label{display:inline-flex;align-items:center;gap:8px;font-size:14px;cursor:pointer}.item-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}.item-card{display:flex;align-items:flex-start;gap:14px;padding:16px 18px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);transition:border-color .15s,box-shadow .15s}.item-card:hover{border-color:var(--border-strong);box-shadow:var(--shadow)}.item-card.selected{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-soft)}.item-card>input{margin-top:6px}.item-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:8px}.item-title{display:flex;align-items:flex-start;justify-content:flex-start;gap:10px;min-height:0;padding:0;border:0;background:transparent;text-align:left;white-space:normal;color:var(--text);font-weight:400;font-size:15px;line-height:1.6}.item-title:hover{background:transparent;color:var(--primary)}.item-title .qno{margin-top:-1px}.clamp{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-family:var(--font-read)}.item-options{display:flex;flex-wrap:wrap;gap:6px;padding-left:38px}.item-options span{display:inline-flex;gap:6px;max-width:100%;padding:2px 10px 2px 3px;border-radius:99px;background:var(--surface-2);border:1px solid var(--border);font-size:13px;color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.item-options b{display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--surface-3);font-size:11px;color:var(--muted);flex:none}.item-meta{display:flex;flex-wrap:wrap;gap:4px 14px;padding-left:38px;font-size:13px;color:var(--muted)}.item-meta span+span:before{content:"·";margin-right:14px;color:var(--faint)}.fav-mark{color:var(--star);margin-top:4px}.table-wrap{overflow:auto;border-radius:var(--radius);border:1px solid var(--border);background:var(--surface);box-shadow:var(--shadow-sm)}.table-wrap.flat{box-shadow:none}table.list{width:100%;min-width:600px;border-collapse:collapse;text-align:left}table.list th{padding:12px 16px;background:var(--surface-2);border-bottom:1px solid var(--border);font-size:13px;font-weight:600;color:var(--muted);white-space:nowrap}table.list td{padding:13px 16px;border-bottom:1px solid var(--border);font-size:14px;vertical-align:middle}table.list tr:last-child td{border-bottom:0}table.list tbody tr:hover td{background:var(--surface-2)}.acc{display:flex;align-items:center;gap:10px;min-width:150px;font-variant-numeric:tabular-nums;font-weight:600}.report-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:18px}.coverage-card{padding:20px 24px}.coverage-head{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:10px;font-weight:650}.coverage-head b{font-family:var(--font-num);font-size:24px;color:var(--success)}.coverage-card .progress-track>span{background:linear-gradient(90deg,var(--success),#3ccf91)}.coverage-card p{margin:10px 0 0}.report-details{padding:0;overflow:hidden}.report-details>summary{display:flex;align-items:center;gap:10px;padding:18px 22px;cursor:pointer;list-style:none;font-weight:650;font-size:15px}.report-details>summary::-webkit-details-marker{display:none}.report-details>summary>svg:first-child{color:var(--primary)}.report-details>summary:hover{background:var(--surface-2)}.summary-chevron{margin-left:auto;color:var(--faint);transition:transform .2s}.report-details[open] .summary-chevron{transform:rotate(90deg)}.report-details[open]>summary{border-bottom:1px solid var(--border)}.report-details .detail-content{padding:18px 22px 22px}.source-coverage p{font-size:14px;line-height:1.85;margin:0 0 10px;color:var(--text-2)}.card-title{display:flex;align-items:center;gap:8px;margin-bottom:8px}.card-title h3{display:flex;align-items:center;gap:8px;margin:0}.card-title h3 svg{color:var(--primary)}.issue-list{display:flex;flex-direction:column;margin-top:8px}.issue-line{display:flex;gap:12px;align-items:flex-start;padding:14px 0;border-top:1px solid var(--border);font-size:14px;line-height:1.75}.issue-line>.tag{margin-top:2px}.issue-line p{margin:2px 0 0;color:var(--text-2)}.evidence-card{padding:22px 24px}.evidence-head{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:6px 16px;margin-bottom:8px}.evidence-head h3{display:flex;align-items:center;gap:8px;margin:0}.evidence-head h3 svg{color:var(--primary)}.evidence-total{font-size:14px;color:var(--muted)}.evidence-total b{font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--text);margin-right:2px}.evidence-bar{display:flex;gap:2px;height:12px;margin:16px 0;border-radius:99px;overflow:hidden;background:var(--surface)}.evidence-seg{flex:1 1 0;min-width:4px;background:var(--border-strong)}.evidence-seg.external_agree,.evidence-dot.external_agree{background:var(--success)}.evidence-seg.disputed_resolved,.evidence-dot.disputed_resolved{background:var(--primary)}.evidence-seg.disputed_unresolved,.evidence-dot.disputed_unresolved{background:var(--warning)}.evidence-seg.source_only,.evidence-dot.source_only{background:color-mix(in srgb,var(--faint) 60%,var(--surface-3))}.evidence-seg.manual,.evidence-dot.manual{background:var(--violet)}.evidence-legend{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px 24px}.evidence-legend li{display:flex;align-items:flex-start;gap:10px;min-width:0}.evidence-dot{flex:none;width:10px;height:10px;margin-top:6px;border-radius:3px}.evidence-legend b{font-size:14px;font-weight:650;color:var(--text)}.evidence-count{margin-left:8px;font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums;white-space:nowrap}.evidence-legend p{margin:2px 0 0;font-size:13px;line-height:1.65;color:var(--muted)}.evidence-note{display:flex;align-items:flex-start;gap:8px;margin:18px 0 0;padding:10px 12px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border);font-size:13px;line-height:1.7;color:var(--text-2)}.evidence-note svg{margin-top:3px;color:var(--warning)}.evidence-sources{margin-top:18px;padding-top:12px;border-top:1px solid var(--border)}.evidence-sources>summary{display:flex;align-items:center;gap:6px;cursor:pointer;list-style:none;font-size:14px;font-weight:600;color:var(--text-2)}.evidence-sources>summary::-webkit-details-marker{display:none}.evidence-sources>summary svg{color:var(--muted);transition:transform .15s}.evidence-sources[open]>summary svg{transform:rotate(90deg)}.evidence-sources ul{list-style:none;margin:12px 0 0;padding:0;display:flex;flex-direction:column;gap:12px}.evidence-sources li{display:flex;flex-direction:column;gap:2px;font-size:13px;line-height:1.6;overflow-wrap:anywhere}.evidence-sources li b{font-weight:600;color:var(--text)}.evidence-sources li p{margin:0;color:var(--muted)}.paper-cell{min-width:210px}.paper-cell b{white-space:nowrap}.paper-note{margin:4px 0 0;max-width:300px;font-size:12px;line-height:1.6;color:var(--warning)}.backup-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}.backup-card{display:flex;flex-direction:column;align-items:flex-start;padding:28px;margin:0}.feature-icon{display:grid;place-items:center;width:52px;height:52px;border-radius:15px;margin-bottom:18px}.backup-card h2{margin:0 0 8px}.backup-card>p{font-size:14px;color:var(--muted);line-height:1.8}.backup-list{display:flex;flex-wrap:wrap;gap:8px;margin:8px 0 24px}.backup-list span{display:inline-flex;align-items:center;gap:5px;padding:5px 11px;border-radius:99px;background:var(--surface-2);border:1px solid var(--border);font-size:13px;color:var(--text-2)}.backup-list svg{color:var(--success)}.backup-hint{font-size:13px;color:var(--muted);line-height:1.75;margin:16px 0 0}.upload-field{display:flex;align-items:center;gap:14px;width:100%;padding:22px 18px;margin:6px 0 16px;border:1.5px dashed var(--border-strong);border-radius:var(--radius-sm);background:var(--surface-2);color:var(--muted);font-size:14px;cursor:pointer;overflow-wrap:anywhere;transition:border-color .15s,background .15s}.upload-field:hover{border-color:var(--primary);background:var(--primary-soft)}.upload-field.has-file{border-style:solid;border-color:var(--primary);color:var(--primary-ink);background:var(--primary-soft)}.upload-field>span{font-weight:600}.upload-field small{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:3px}.upload-field:focus-within{box-shadow:var(--ring)}.mode-picker{display:grid;grid-template-columns:1fr 1fr;gap:10px;width:100%;margin-bottom:18px}.mode-option{display:flex;align-items:flex-start;gap:10px;padding:12px 14px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);cursor:pointer;transition:border-color .15s,background .15s}.mode-option input{margin-top:3px}.mode-option span{display:flex;flex-direction:column}.mode-option b{font-size:14px}.mode-option small{font-size:12px;color:var(--muted)}.mode-option.active{border-color:var(--primary);background:var(--primary-soft);box-shadow:inset 0 0 0 1px var(--primary)}.confirm-notice{align-items:flex-start;margin-top:20px}.confirm-notice b{display:block;margin-bottom:4px}.restore-result{margin-top:20px}.restore-result h3{display:flex;align-items:center;gap:8px;color:var(--success)}.workspace-footer span:first-child{font-weight:600;color:var(--muted)}@media (max-width: 1280px){.hero{grid-template-columns:minmax(0,1fr) 320px;padding:30px 34px 34px}.hero-watermark{right:370px}.result-hero{grid-template-columns:auto minmax(0,1fr)}.result-sections{grid-column:1 / -1;display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px 24px}}@media (max-width: 1100px){:root{--sidebar: 220px}.brand-text small{letter-spacing:.06em}main{padding:30px 28px 24px}.workspace-footer{padding-inline:28px}.stat-row,.review-summary,.report-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.split{grid-template-columns:minmax(0,1fr)}.split .material{position:static;max-height:none;overflow:visible}.practice-page .split .material{position:static;max-height:none}.is-practicing main{padding:0 22px 32px}.practice-toolbar{margin-inline:-22px;padding-inline:22px}.toolbar-progress{margin-inline:-22px}}@media (max-width: 900px){:root{--sidebar: 0px}body{font-size:14px}.sidebar{position:sticky;inset:auto;width:100%;height:auto;flex-direction:row;align-items:center;padding:10px 16px;border-right:0;border-bottom:1px solid var(--border);background:var(--surface)}.brand-mark{width:34px;height:34px;font-size:17px;border-radius:10px}.brand-text{font-size:16px}.brand-text small,.sidebar-bottom{display:none}.mobile-theme{display:block;margin-left:auto}.main-nav{position:fixed;z-index:70;left:0;right:0;bottom:0;flex-direction:row;gap:0;margin:0;padding:6px 8px calc(6px + env(safe-area-inset-bottom));background:color-mix(in srgb,var(--surface) 94%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-top:1px solid var(--border)}.main-nav a{flex:1;flex-direction:column;gap:2px;padding:6px 4px;font-size:12px;text-align:center}.main-nav a.active{background:transparent}.main-nav a.active:before{left:30%;right:30%;top:-7px;bottom:auto;width:auto;height:3px;border-radius:0 0 3px 3px}.nav-label-full{display:none}.nav-label-short{display:inline}.workspace{padding-bottom:72px}.is-practicing .workspace{padding-bottom:0}main{padding:22px 16px 20px}.workspace-footer{padding:18px 16px;flex-direction:column;gap:4px}.hero{grid-template-columns:minmax(0,1fr);grid-template-areas:"top" "main" "card";padding:22px;gap:22px;border-radius:var(--radius)}.hero-top{flex-direction:column;align-items:stretch;gap:14px}.hero-top .hero-kicker{align-self:flex-start}.exam-switch{display:flex}.exam-switch button{flex:1;padding-right:12px}.hero-watermark{right:-8px;bottom:auto;top:170px;font-size:104px}.hero h1{font-size:26px}.hero h1 br{display:none}.page-heading h1{font-size:26px}.stat-row{gap:10px;margin-bottom:30px}.stat-tile{padding:14px;gap:10px;flex-direction:column}.stat-icon{width:36px;height:36px;border-radius:10px}.stat-tile strong{font-size:24px}.stat-caption{font-size:12px}.library-toolbar{padding:10px}.search-field{flex-basis:100%}.segmented{width:100%}.segmented button{flex:1;padding:4px 6px}.filter-selects{width:100%;display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.filter-selects select{width:100%;font-size:13px;padding-left:10px;padding-right:26px;background-position:right 8px center}.exam-grid{grid-template-columns:minmax(0,1fr);gap:14px}.review-summary{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.mini-stat{flex-direction:column;align-items:flex-start;gap:8px;padding:12px}.mini-stat b{font-size:20px}.mini-stat span{font-size:12px}.item-options,.item-meta{padding-left:0}.report-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.backup-grid,.mode-picker{grid-template-columns:minmax(0,1fr)}.modal-backdrop{padding:12px 8px}.modal-dialog{padding:18px;border-radius:var(--radius)}.modal-columns{grid-template-columns:minmax(0,1fr)}.is-practicing .sidebar{display:none}.is-practicing main{padding:0 14px 28px}.practice-toolbar{margin-inline:-14px;padding:10px 14px 0}.toolbar-progress{margin-inline:-14px}.practice-head{gap:8px 10px}.practice-title{flex:1 1 calc(100% - 140px)}.practice-title .title{font-size:16px}.timer{padding:5px 10px;font-size:14px}.practice-actions{width:100%;justify-content:flex-end}.practice-restart span{display:none}.practice-restart{width:38px;padding:0}.font-ctl span{display:none}.split{gap:16px;font-size:calc(15px * var(--font-scale))}.material-card,.qcard{padding:18px}.audio-bar{border-radius:var(--radius);gap:10px;padding:10px 12px}.audio-volume{display:none}.audio-error{padding-left:0}.opt{padding:10px 12px 10px 10px;gap:10px}.opt .verdict{font-size:11px}.qnav .qn{width:34px;height:34px;font-size:13px}.letter-row .L{width:38px;height:38px}.result-hero{grid-template-columns:minmax(0,1fr);justify-items:center;text-align:center;padding:22px 18px;gap:18px}.result-stats{justify-content:center}.result-sections{width:100%;text-align:left;grid-template-columns:minmax(0,1fr)}.confirm-dialog{margin-top:4vh;padding:22px}.review-toolbar .grow{flex-basis:100%;order:3}}@media (max-width: 560px){.exam-switch{gap:4px}.exam-switch button{flex-direction:column;gap:6px;padding:8px 4px;text-align:center}.exam-num{width:34px;height:34px;border-radius:10px;font-size:19px}.exam-label{align-items:center}.exam-label b{font-size:15px}}@media (max-width: 480px){.qnav-legend{display:none}.set-row{grid-template-columns:auto minmax(0,1fr)}.set-actions{grid-column:1 / -1;flex-direction:row-reverse;justify-content:space-between;align-items:center}.set-actions .paper-action{flex:1;max-width:60%}.stat-row{grid-template-columns:repeat(2,minmax(0,1fr))}.report-grid{grid-template-columns:minmax(0,1fr)}.stat-tile{flex-direction:row;align-items:center}.track-filter .track-years{display:none}}@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}*,*:before,*:after{transition:none!important;animation:none!important}}.exam-switch-row{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:22px}.exam-switch-row h2{margin:4px 0 0;font-size:22px}.exam-switch-row .eyebrow{font-size:11px;color:var(--text-muted,#737581);letter-spacing:.08em}@media (max-width:600px){.exam-switch-row{align-items:flex-start;flex-direction:column}.exam-switch-row .segmented{width:100%}.exam-switch-row .segmented button{flex:1}}.exam-switch-row h2{flex-shrink:0}@media (max-width: 480px){.exam-switch-row .segmented button{white-space:normal;line-height:1.25}}@media (max-width: 360px){.segmented button{padding-inline:4px}.segmented button span{margin-left:3px}}.sentence-insights{margin:18px 0;border:1px solid var(--border,#d7d9e1);border-radius:10px;padding:12px 14px}.sentence-insights>summary{cursor:pointer;font-weight:650}.sentence-insights-content{padding-top:8px}.sentence-insights-content section+section{border-top:1px solid var(--border,#d7d9e1);margin-top:20px;padding-top:14px}.sentence-insights-page{display:flex;justify-content:space-between;gap:12px;font-size:12px;margin-bottom:12px;color:var(--text-muted,#777)}.listening-divider{display:flex;align-items:center;gap:12px;padding:11px 16px;margin:22px 0 12px;border-radius:10px;background:var(--primary-soft);color:var(--primary);font-size:14px}.word-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(135px,1fr));gap:7px;margin-top:12px}.word-option{display:flex;justify-content:flex-start;text-align:left;gap:8px;min-width:0;padding:7px}.word-option .okey{flex:none}.word-option.selected{background:var(--primary-soft);border-color:var(--primary);color:var(--primary)}.reading-paragraph{margin:0 0 1em;text-indent:1.5em}.reading-paragraph:last-child{margin-bottom:0}.mark-tools{display:flex;align-items:center;flex-wrap:wrap;gap:8px;margin-bottom:10px;padding:10px 12px;background:var(--surface);border:1px solid var(--border);border-radius:10px;color:var(--muted);font-size:12px}.mark-tools button{min-height:30px;padding:4px 9px;font-size:12px}.mark-tools details{flex-basis:100%}.mark-tools summary{cursor:pointer;color:var(--primary)}.mark-tools ul{padding:0;margin:8px 0 0;list-style:none}.mark-tools li{display:flex;justify-content:space-between;gap:8px;padding:4px 0;overflow-wrap:anywhere}::highlight(practice-marks){background:#ffdc72;color:#202020}.mark-tools{position:sticky;top:0;z-index:15}.practice-page .qcard{scroll-margin-top:calc(var(--practice-toolbar-height) + var(--question-nav-height) + 16px)}.reading-instruction{margin:0 0 1em;color:var(--muted);font-family:var(--font-read)}.mark-tools{position:static}.mark-popup{position:fixed;z-index:90;transform:translate(-50%);white-space:nowrap;min-height:34px;padding:6px 10px;background:var(--primary);color:var(--on-primary);border-color:var(--primary);box-shadow:var(--shadow-sm)}.opt .otext,.word-option [data-mark-index]{-webkit-user-select:text;user-select:text;cursor:text}.opt[aria-disabled=true],.word-option[aria-disabled=true]{cursor:default}.opt[aria-disabled=true]:hover:not(.selected):not(.correct):not(.wrong){border-color:var(--border);background:var(--surface)}.opt{cursor:pointer}.word-option{align-items:center;min-height:38px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);background:var(--surface);color:var(--text-2);font-family:var(--font-sans);font-size:14px;font-weight:550;line-height:1.3;cursor:pointer}.word-option:hover:not([aria-disabled=true]){background:var(--surface-3);color:var(--text);border-color:var(--border-strong)}.word-option[aria-disabled=true]{opacity:.65}.mark-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-bottom:18px}.mark-panel{min-width:0;padding:18px 20px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.mark-panel h3{display:flex;align-items:center;margin:0 0 12px;font-size:15px}.mark-panel .hint{margin-top:12px}.mark-overview dl{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:0}.mark-overview dl div{padding:10px 12px;border-radius:var(--radius-sm);background:var(--surface-2);border:1px solid var(--border)}.mark-overview dt{font-size:12px;color:var(--muted)}.mark-overview dd{margin:2px 0 0;font-family:var(--font-num);font-size:22px;font-weight:700;line-height:1.2;font-variant-numeric:tabular-nums}.mark-rank{list-style:none;counter-reset:rank;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}.mark-rank li{counter-increment:rank;display:flex;align-items:center;gap:10px;min-width:0;font-size:14px}.mark-rank li:before{content:counter(rank);display:grid;place-items:center;flex:none;width:22px;height:22px;border-radius:50%;background:var(--surface-3);color:var(--muted);font-size:11px;font-weight:650;font-variant-numeric:tabular-nums}.mark-rank li:nth-child(-n+3):before{background:var(--warning-soft);color:var(--warning)}.mark-rank-text{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-family:var(--font-read);color:var(--text)}.mark-rank b{flex:none;color:var(--primary);font-family:var(--font-num);font-variant-numeric:tabular-nums}.mark-bars{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px;max-height:260px;overflow-y:auto}.mark-bars li{display:grid;grid-template-columns:84px minmax(0,1fr) 36px;align-items:center;gap:10px;font-size:13px}.mark-bar-label{color:var(--text-2);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.mark-bar-track{position:relative;height:8px;border-radius:99px;background:var(--surface-3);overflow:hidden}.mark-bar-track>span{position:absolute;inset:0 auto 0 0;min-width:4px;border-radius:inherit;background:linear-gradient(90deg,var(--primary),var(--violet))}.mark-bars b{text-align:right;font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--text-2)}.mark-dist{grid-column:1 / -1;min-width:0}.mark-dist-body{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.mark-dist>summary{display:flex;align-items:center;gap:8px;padding:12px 16px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm);color:var(--text-2);font-size:14px;font-weight:600;cursor:pointer;list-style:none}.mark-dist>summary::-webkit-details-marker{display:none}.mark-dist>summary svg{color:var(--muted);transition:transform .15s}.mark-dist[open]>summary{margin-bottom:14px}.mark-dist[open]>summary svg{transform:rotate(90deg)}.mark-dist>summary:focus-visible{outline:none;box-shadow:var(--ring)}@media (min-width: 901px){.mark-dist>summary{display:none}}.mark-toolbar .search-field{min-height:38px}.mark-export{display:flex;flex-wrap:wrap;gap:8px}.mark-export-status{margin-left:auto;scroll-margin:80px 0;padding:6px 10px;border-radius:var(--radius-sm);background:var(--primary-soft);color:var(--primary-ink);font-size:13px}.mark-export-status.error{background:var(--danger-soft);color:var(--danger)}.mark-scope{margin:-4px 0 12px}.mark-group{margin-bottom:22px}.mark-group-head{display:flex;align-items:center;margin:0 0 10px;font-size:15px;color:var(--text-2)}.mark-group-head .tab-count{margin-left:8px}.mark-card{align-items:flex-start}.mark-card .item-body{gap:6px}.mark-card .item-meta{padding-left:0;font-size:12px}.mark-text{margin:0;font-family:var(--font-read);color:var(--text);white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.65}.mark-text.word{font-size:17px;font-weight:600}.mark-text.phrase{font-size:15px}.mark-text.clamp-4{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}.mark-expand{align-self:flex-start;padding-left:0}.mark-tags{display:flex;flex-wrap:wrap;gap:6px}.mark-actions{display:flex;flex:none;flex-wrap:wrap;justify-content:flex-end;gap:6px;align-items:center;max-width:240px}.mark-action-error{flex-basis:100%;scroll-margin:80px 0;text-align:right;color:var(--danger);font-size:12px;font-weight:550}.mark-actions button.ghost:hover{color:var(--danger);background:var(--danger-soft)}.mark-actions button[aria-disabled=true]{opacity:.7;cursor:progress}@media (max-width: 1100px){.mark-overview dl{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width: 900px){.mark-stats,.mark-dist-body{grid-template-columns:minmax(0,1fr)}}@media (max-width: 640px){.mark-panel{padding:14px 16px}.mark-toolbar .segmented{width:100%}.mark-export{width:100%;display:grid;grid-template-columns:repeat(3,minmax(0,1fr))}.mark-export button{padding-inline:6px;white-space:normal}.mark-card{flex-direction:column;gap:10px;padding:14px}.mark-actions{align-self:flex-end;max-width:none}.mark-export-status{margin-left:0;flex-basis:100%}.mark-bars li{grid-template-columns:70px minmax(0,1fr) 30px}.review-page .tabs{gap:2px}.review-page .tabs button{flex:1 1 auto;min-width:0;padding:8px 4px 10px;font-size:13px;white-space:nowrap}.review-page .tabs button.active:after{left:6px;right:6px}.review-page .tabs .tab-count{min-width:18px;margin-left:4px;padding:0 5px;font-size:11px}.review-page .tab-count-total{display:none}}html:has(.practice-page){scroll-padding-top:0}.practice-content{min-width:0}.practice-page[data-nav-layout=rail] .practice-content{margin-right:calc(var(--practice-rail-width) + 24px)}.practice-page[data-columns=double] .split{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.practice-page[data-columns=single] .split{grid-template-columns:minmax(0,1fr)}.practice-page[data-columns=single] .split .material{position:static;max-height:none;overflow:visible}.practice-page[data-columns=double] .split .material{position:sticky;top:calc(var(--practice-toolbar-height) + var(--question-nav-height) + 16px);max-height:max(160px,calc(100dvh - var(--practice-toolbar-height) - var(--question-nav-height) - 32px));overflow:auto}.practice-navigation{z-index:40}.practice-navigation .qnav-card{margin:0;padding:14px;box-shadow:var(--shadow)}.practice-navigation .qnav-head{justify-content:flex-start;gap:8px;margin-bottom:8px;min-height:24px;font-size:14px}.qnav-count{font-size:13px;font-weight:500;color:var(--muted)}.practice-navigation .qnav-legend{display:flex;flex-wrap:wrap;gap:7px 10px;margin-bottom:12px;line-height:20px;font-size:13px}.practice-navigation .qnav-legend>span{display:inline-flex;align-items:center;gap:5px}.practice-navigation .qnav-legend .lg{margin:0;flex:none}.practice-navigation .qnav{padding:5px;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}.practice-navigation .qnav .qn{flex:0 0 44px;width:44px;height:44px;font-size:15px;border-radius:12px}.section-side-switch{position:fixed;top:0;right:0;bottom:0;left:0;z-index:39;pointer-events:none}.section-side-switch button{position:absolute;top:50%;transform:translateY(-50%);pointer-events:auto;width:52px;height:52px;min-height:52px;padding:0;border-radius:50%;background:var(--surface);color:var(--primary);box-shadow:var(--shadow)}.section-side-switch .previous{left:var(--practice-switch-inset, 12px)}.section-side-switch .next{right:var(--practice-switch-inset, 12px)}.section-side-switch .previous svg{transform:rotate(180deg)}.section-side-switch button:active:not(:disabled){transform:translateY(calc(-50% + 1px))}.section-side-switch button:hover:not(:disabled){color:var(--primary-ink);background:var(--primary-soft);border-color:var(--primary)}.section-side-switch button:focus-visible{outline:2px solid var(--primary);outline-offset:3px;box-shadow:var(--ring)}.section-side-switch button:disabled{color:var(--faint);opacity:.4;box-shadow:none}.practice-page[data-nav-layout=rail] .practice-navigation{position:fixed;left:var(--practice-rail-left);top:calc(var(--practice-toolbar-height) + 16px);width:var(--practice-rail-width);max-height:calc(100dvh - var(--practice-toolbar-height) - 32px);display:flex;flex-direction:column;gap:16px}.practice-page[data-nav-layout=rail] .qnav-card{min-height:0;display:flex;flex-direction:column}.practice-page[data-nav-layout=rail] .qnav{display:grid;grid-template-columns:repeat(5,1fr);gap:8px 6px;min-height:0}.practice-page[data-nav-layout=rail] .qnav .qn{width:100%;height:auto;aspect-ratio:1}.practice-page[data-nav-layout=top] .practice-navigation{position:sticky;top:var(--practice-toolbar-height);margin-bottom:16px}.practice-page[data-nav-layout=top] .qnav-card{padding:12px 14px}.practice-page[data-nav-layout=top] .qnav{max-height:106px}@media (min-width: 901px){.is-practicing main{padding-inline:76px}}@media (max-width: 900px){.section-side-switch button{top:auto;bottom:16px;transform:none;width:48px;height:48px;min-height:48px}.section-side-switch .previous{left:16px}.section-side-switch .next{right:16px}.section-side-switch button:active:not(:disabled){transform:translateY(1px)}.is-practicing main{padding-bottom:84px}}@media (max-width: 600px){.practice-page[data-nav-layout=top] .qnav-legend{display:none}}.reading-translation-control{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;padding:16px 18px;margin-bottom:16px;font-family:var(--font-sans)}.reading-translation-control b{display:block;font-size:14px;color:var(--text-2)}.reading-translation-control .hint{display:block;margin-top:4px}.reading-translation-control button{flex:none;color:var(--primary);border-color:var(--primary-soft-2);background:var(--primary-soft)}.reading-paragraph-pair{margin:0 0 1em}.reading-paragraph-pair:last-child{margin-bottom:0}.reading-paragraph-pair .reading-paragraph{margin:0}.bilingual-passage .reading-paragraph-pair{margin-bottom:1.5em}.bilingual-passage .reading-paragraph-pair:last-child{margin-bottom:0}.reading-paragraph-cn{margin-top:10px;font-family:var(--font-sans);font-size:.94em;color:var(--text-2);line-height:1.95;text-indent:2em}