/* Shared visual system and strict route visibility. */
[hidden]{display:none!important}
:root{--paper:#f7f8fa;--ink:#202631;--muted:#737b8a;--line:#e6e9ef;--green:#485cd9;--dark:#4255cd;--sage:#edf0ff;--shadow:0 8px 24px #27335108}
body{font-family:"Segoe UI","Microsoft YaHei",sans-serif;font-size:14px}
.site-header{height:72px;background:#ffffffed;border-color:var(--line)}
.brand{font-size:17px;letter-spacing:-.5px}.brand-mark{width:32px;height:32px}
.nav a,.quiet-button{font-size:13px;border-radius:7px}.nav a:hover,.quiet-button:hover{background:#f0f2f8}
.shell{max-width:1120px}.home-intro{padding:64px 0 46px}.intro-label{font-size:11px;letter-spacing:1.7px;font-weight:700;color:#7a8296;display:flex;align-items:center;gap:8px}.brand-dot{width:7px;height:7px;border-radius:50%;background:#6676e3}
.home-intro h1{font:700 40px/1.4 "Segoe UI","Microsoft YaHei",sans-serif;letter-spacing:-1.8px;margin:18px 0 12px}.home-intro p{font-size:16px;color:var(--muted);margin:0}
.tools-section{padding:0 0 42px;border:0}.catalog-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}.catalog-head h2{font-size:19px;margin:0;display:flex;gap:10px;align-items:center}.catalog-head p{color:var(--muted);margin:6px 0 0;font-size:13px}.count-chip{font-size:11px;background:#e9edf4;color:#748093;padding:1px 7px;border-radius:5px}.local-badge{font-size:12px;color:#85908e}
.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}.tool-card{border-radius:14px;min-height:245px;padding:24px;background:white;transition:box-shadow .16s,transform .16s,border-color .16s}.tool-card:hover{border-color:#b9c2ef;transform:translateY(-3px);box-shadow:0 12px 32px #37466e12}.tool-card-top{display:flex;align-items:center;gap:10px}.tool-icon{background:#eef0ff;color:#5667d8;width:42px;height:42px;border-radius:10px;font-size:24px}.tool-category{font-size:11px;color:#8a91a2}.tool-arrow{margin-left:auto;color:#a1a8b7}.tool-card h3{font-size:20px;margin:23px 0 8px}.tool-card p{font-size:13px;line-height:1.8}.tool-bottom{border-top:1px solid #f0f1f5;margin-top:22px;padding-top:16px;display:flex;justify-content:space-between;gap:10px;font-size:10px;color:#8a91a2}.tool-bottom strong{font-size:11px;color:#5265d8;white-space:nowrap}
.catalog-note{margin-top:22px;display:flex;align-items:center;gap:14px;padding:20px 22px;border:1px dashed #dce1eb;border-radius:12px;color:#949baa}.catalog-note>span{font-size:24px}.catalog-note strong{font-weight:500;color:#737d8d;font-size:12px}.catalog-note p{font-size:12px;margin:2px 0 0}.home-notes{display:grid;grid-template-columns:repeat(3,1fr);padding:25px 0 64px;gap:38px;border-top:1px solid var(--line)}.home-notes span{font-size:10px;color:#a3abba;margin-right:12px}.home-notes strong{font-size:13px;font-weight:600}.home-notes p{font-size:12px;color:#8b93a2;margin:8px 0 0}
.site-footer{background:transparent;border-top:1px solid var(--line);min-height:92px}.site-footer span{font-size:12px;color:#7a8291;font-weight:500}.site-footer small{font-size:11px}.beian{font-size:10px}
.button{border-radius:8px;min-height:41px;font-size:13px;box-shadow:none;gap:8px}.primary{background:#4e60d5}.primary:hover{background:#3e4fc1}.secondary{background:#fff}.danger{background:#fff5f4;font-size:12px}
.workspace{grid-template-columns:210px minmax(0,1fr);min-height:calc(100vh - 164px)}.workspace-sidebar{background:#fff;padding:28px 16px}.sidebar-label{font-size:12px;color:#8d95a3;margin-top:30px}.back-home{display:block;padding:8px 12px;font-size:12px;color:#828b9d}.side-link{font-size:13px;margin:4px 0;border-radius:8px}.side-link.active{background:#eef0ff;color:#4e60cc}.sidebar-tip{background:#f6f7fb;color:#8b94a3;margin:28px 0 0}
.workspace-main{padding:40px clamp(22px,4vw,60px) 60px}.workspace-head h1{font:700 28px/1.4 "Segoe UI","Microsoft YaHei",sans-serif;letter-spacing:-.6px}.eyebrow{font-size:10px;letter-spacing:1px;color:#8f97a5;font-weight:500}.workspace-head p:last-child{font-size:13px}.toolbar{grid-template-columns:minmax(100px,1fr) 140px auto;gap:12px;margin-top:26px}.search{border-radius:8px;min-height:42px}.toolbar select{border-radius:8px;font-size:12px}
.empty-state{border-style:solid;background:#fff;padding:68px 24px}.empty-illustration{border-radius:16px;width:58px;height:58px;background:#f0f2fc;color:#6373ce}.empty-state h2{font-size:19px;font-weight:600}.empty-state p{font-size:12px;max-width:480px;margin:10px auto 24px;line-height:1.9}.mistake-image{background:#f3f4f8;height:220px;padding:12px}.mistake-image img{object-fit:contain}.mistake-card{border-radius:12px}.mistake-body h3{font-size:15px}.mistake-body p{font-size:12px}.dialog{border-radius:16px;max-height:92vh}.editor-fields h2,.small-dialog h2{font-family:inherit;font-size:23px;font-weight:600}.preview-wrap{background:#f2f4f8}.editor-fields{padding:32px}.editor-fields input:focus,.editor-fields textarea:focus,.editor-fields select:focus{border-color:#7b89dd;box-shadow:0 0 0 3px #5364d510}button:focus-visible,a:focus-visible{outline:3px solid #a9b4ed;outline-offset:3px}
@media(max-width:950px){.tool-grid{grid-template-columns:repeat(2,1fr)}.workspace{grid-template-columns:1fr}.workspace-sidebar{padding:12px 20px}.back-home{display:none}.home-intro{padding-top:42px}}
@media(max-width:650px){.home-intro h1{font-size:29px;letter-spacing:-1px}.home-intro p{font-size:13px}.home-intro{padding-bottom:34px}.tool-grid{grid-template-columns:1fr}.catalog-head{gap:10px}.local-badge{font-size:10px}.home-notes{gap:18px;grid-template-columns:1fr;padding-bottom:35px}.nav a{display:inline-block;font-size:11px;padding:6px}.quiet-button{font-size:11px;padding:6px}.brand span{font-size:13px}.brand-mark{width:25px;height:25px}.site-header{padding:0 14px}.workspace-main{padding:26px 16px}.toolbar{grid-template-columns:1fr 1fr}.search{grid-column:1/-1}.workspace-head{gap:18px}.tool-card{min-height:230px}.empty-state{padding:42px 16px}.beian{gap:5px}.site-footer{padding:20px}.preview-wrap img{max-height:220px}}
@media print{[hidden]{display:none!important}.workspace{display:block}.mistake-image{height:auto;min-height:120px}.mistake-image img{max-height:340px;object-fit:contain}.mistake-grid{display:block}.mistake-card{margin-bottom:20px}.sidebar-tip{display:none}}
/* Toolbox identity: ink, electric blue, generous typography. */
:root{--paper:#f8fafc;--ink:#13233b;--muted:#59677a;--line:#dde4ed;--green:#2457e6;--dark:#1739a2;--sage:#edf2ff}
body{font-size:16px;font-family:"Segoe UI","Microsoft YaHei",sans-serif;background:var(--paper)}
main{min-height:calc(100vh - 170px)}
.shell{width:min(1180px,calc(100% - 80px));max-width:1180px}
.site-header{height:80px;padding:0 max(40px,calc((100% - 1180px)/2));background:#f8fafcf0;border-bottom:1px solid var(--line)}
.brand{font-size:18px;letter-spacing:-.6px}.brand-mark{width:36px;height:36px}
.nav{gap:16px}.nav a,.quiet-button{font-size:14px;color:#59677a;padding:9px 12px}.nav a[aria-current=page]{color:#173fbe;background:#eaf0ff}.nav a span{margin-left:9px}
.skip-link{position:fixed;top:-70px;left:20px;z-index:100;background:white;padding:12px}.skip-link:focus{top:10px}
.landing{padding-top:55px;padding-bottom:25px}.landing-kicker{display:flex;align-items:center;gap:12px;color:#56647b;font-size:12px;letter-spacing:1.5px;font-weight:600}.brand-dot{background:#285ce8;width:7px;height:7px}.kicker-line{width:28px;height:1px;background:#aeb9c9}
.landing-heading{display:grid;grid-template-columns:1.4fr 1fr;align-items:end;gap:50px;margin:32px 0 45px}.landing-heading h1{font-size:clamp(44px,5vw,70px);line-height:1.25;letter-spacing:-3px;margin:0;font-weight:750}.landing-heading h1>span{color:#6e809a}.landing-copy{padding-left:35px;border-left:1px solid #d4dce8}.landing-copy p{font-size:17px;line-height:1.9;color:#59677a;margin:0 0 22px}
.button{font-size:14px;font-weight:600;min-height:46px;border-radius:10px}.primary{background:#2457e6}.primary:hover{background:#1845c6}.explore-button{padding:0 21px;gap:37px;box-shadow:0 6px 15px #2457e61c}
.brand-panel{position:relative;overflow:hidden;background:#1739a2;color:white;border-radius:20px;padding:28px 35px 25px;background-image:radial-gradient(ellipse at 90% 10%,#376ae1 0,transparent 60%),linear-gradient(115deg,#102f8b,#2355cc)}
.panel-caption{font-size:12px;letter-spacing:2.1px;color:#c2d3ff}.panel-word{font:750 clamp(92px,15vw,202px)/1.2 "Segoe UI",sans-serif;letter-spacing:-12px;white-space:nowrap;padding:3px 0 13px}.word-spark{display:inline-block;font-size:.69em;vertical-align:6%;margin:0 4px;color:#b8d0ff;font-weight:400}.word-dot{color:#c9e979}.panel-bottom{border-top:1px solid #ffffff30;padding-top:18px;display:flex;justify-content:space-between;gap:20px;color:#d1dfff;font-size:14px}.panel-bottom span:last-child{font-size:12px;letter-spacing:1.5px;align-self:center}
.landing-bottom{display:flex;align-items:center;justify-content:space-between;gap:22px;padding:24px 0;font-size:14px}.landing-bottom>span{font-weight:600}.landing-bottom p{color:#59677a;margin:0}.landing-bottom a{color:#234fb9}.landing-bottom a span{margin-left:20px}
.tools-view{padding:55px 0 90px;min-height:calc(100vh - 173px)}.catalog-intro{margin-bottom:46px}.eyebrow{font-size:12px;letter-spacing:1.5px;color:#5a6e8d}.catalog-intro h1{font-size:44px;letter-spacing:-1.5px;margin:12px 0 10px;line-height:1.25}.heading-dot{color:#2457e6}.catalog-intro>p:last-child{color:var(--muted);font-size:16px;margin:0}.catalog-head{border-bottom:1px solid var(--line);padding-bottom:19px;margin-bottom:25px}.catalog-head h2{font-size:18px}.count-chip{font-size:12px;background:#e9eef6;color:#526782}.local-badge{font-size:14px;color:#59677a}.tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.tool-card{padding:27px;border:1px solid #dce4f0;border-radius:16px;min-height:278px;box-shadow:0 5px 22px #172c4e04}.tool-card h3{font-size:24px;margin:26px 0 11px}.tool-card p{font-size:15px;line-height:1.9}.tool-icon{width:48px;height:48px;background:#eaf0ff;color:#2457e6}.tool-category{font-size:14px;color:#59677a}.tool-arrow{color:#4568a1;font-size:21px}.tool-bottom{margin-top:26px;font-size:12px;flex-wrap:wrap;color:#59677a}.tool-bottom strong{font-size:14px;color:#2457e6}.catalog-storage-note{font-size:14px;color:#59677a;margin-top:28px}
.site-footer{padding:23px max(40px,calc((100% - 1180px)/2));min-height:90px;gap:24px}.site-footer span{font-size:14px;color:#53647c}.site-footer small{font-size:12px;margin-top:3px}.beian{font-size:12px;color:#68768a;flex-wrap:wrap}
.workspace-head h1{font-size:32px}.workspace-head p:last-child,.side-link,.search,.toolbar select{font-size:14px}.side-link.active{background:#eaf0ff;color:#244eba}.back-home{font-size:14px;color:#52647e}.sidebar-label{font-size:14px}.sidebar-tip{font-size:14px;color:#52647e}.empty-state p{font-size:14px}.empty-state h2{font-size:22px}.empty-illustration{background:#eaf0ff;color:#2457e6}.editor-fields label{font-size:14px}.mistake-body h3{font-size:17px}.mistake-body p{font-size:14px}.subject,.mastery{font-size:12px}.search:focus-within{border-color:#2457e6;box-shadow:0 0 0 3px #2457e615}a:focus-visible,button:focus-visible,.mistake-card:focus-visible{outline:3px solid #668ff4;outline-offset:4px}
@media(min-width:1500px){.landing{padding-top:70px}.landing-heading{margin:40px 0 55px}}
@media(max-width:950px){.landing-heading{gap:25px}.landing-copy{padding-left:24px}.landing-heading h1{font-size:49px;letter-spacing:-2px}.tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.panel-word{letter-spacing:-8px}.landing-bottom{flex-wrap:wrap}.landing-bottom p{font-size:13px}.nav{gap:4px}}
@media(max-width:650px){.shell{width:calc(100% - 36px)}.site-header{height:auto;min-height:76px;padding:14px 18px;flex-wrap:wrap;gap:10px}.brand span{font-size:16px}.brand-mark{width:29px;height:29px}.nav{gap:4px;flex-wrap:wrap}.nav a,.quiet-button{font-size:14px;padding:7px 9px;display:inline-block}.landing{padding-top:32px}.landing-kicker{font-size:12px;letter-spacing:.7px;gap:8px}.kicker-line{width:15px}.landing-heading{grid-template-columns:1fr;margin:27px 0 30px;gap:26px}.landing-heading h1{font-size:clamp(39px,10.5vw,57px);letter-spacing:-1.8px}.landing-copy{border:0;padding:0;display:flex;gap:20px;align-items:end;justify-content:space-between;flex-wrap:wrap}.landing-copy p{font-size:15px;margin:0}.explore-button{gap:16px;min-height:45px}.brand-panel{padding:22px 20px;border-radius:15px}.panel-caption{font-size:12px;letter-spacing:1px}.panel-word{font-size:clamp(75px,19vw,125px);letter-spacing:-5px;padding:20px 0}.panel-bottom{font-size:13px}.panel-bottom span:last-child{display:none}.landing-bottom{gap:14px;padding:22px 0}.landing-bottom p{width:100%;order:3;font-size:14px}.landing-bottom a span{margin-left:8px}.site-footer{padding:23px 18px;gap:18px}.beian{font-size:12px}.tools-view{padding:34px 0 60px}.catalog-intro{margin-bottom:32px}.catalog-intro h1{font-size:36px}.catalog-intro>p:last-child{font-size:15px}.tool-grid{grid-template-columns:1fr}.catalog-head{align-items:center;gap:12px}.local-badge{font-size:12px}.catalog-head h2{font-size:17px}.workspace-head h1{font-size:28px}.toolbar .button{padding:0 10px}.workspace-sidebar{padding:12px}.side-link{padding:10px}.sidebar-tip{display:none}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
@media print{.view[data-view=tools]{display:none!important}}

/* Cloud account and authentication */
.account-button{min-height:38px;padding:0 16px;color:#fff;background:#1739a2;border:0}.account-button:hover{background:#2457e6}.account-button.signed-in{max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;background:#eaf0ff;color:#1739a2}
.auth-dialog{width:min(460px,calc(100% - 28px));padding:38px 40px;border:0}.auth-dialog h2,.account-dialog h2{margin:4px 0 10px;font-size:30px;letter-spacing:-.8px}.auth-mark{width:58px;height:58px;margin-bottom:28px;display:grid;place-items:center;border-radius:17px;background:#1739a2;color:#fff;font-size:26px;font-weight:800}.auth-mark span{font-size:15px;color:#c9e979}.auth-lead,.auth-terms,.code-hint{color:var(--muted)}.auth-lead{margin-bottom:26px}.auth-dialog label,.account-dialog label{display:block;color:#52647e;font-size:14px}.auth-dialog input,.account-dialog input{width:100%;margin-top:7px;padding:13px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;outline:none}.auth-dialog input:focus,.account-dialog input:focus{border-color:#2457e6;box-shadow:0 0 0 3px #2457e615}.auth-submit{width:100%;margin-top:18px}.text-button{display:block;margin:14px auto 0;padding:6px;border:0;background:none;color:#2457e6}.auth-terms{margin:22px 0 0;font-size:12px;line-height:1.7}.code-hint{margin:7px 0 0;font-size:12px}
.account-dialog{width:min(640px,calc(100% - 28px));padding:36px 40px;border:0}.account-summary{display:grid;grid-template-columns:1.2fr 1fr;gap:12px;margin:25px 0 30px}.account-summary>div{padding:17px;border-radius:12px;background:#f3f6fb}.account-summary span,.account-summary strong{display:block}.account-summary span{font-size:12px;color:var(--muted)}.account-summary strong{margin-top:5px;font-size:15px;word-break:break-all}.account-dialog h3{font-size:15px}.session-list{display:grid;gap:9px;margin:12px 0 24px}.session-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 14px;border:1px solid var(--line);border-radius:10px}.session-item div{min-width:0}.session-item strong,.session-item span,.session-item small{display:block}.session-item span,.session-item small{max-width:430px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:12px}.session-item button{border:0;background:none;color:#2457e6}.current-chip{padding:3px 8px;border-radius:99px;background:#eaf0ff;color:#2457e6!important}.account-actions{display:flex;gap:10px;flex-wrap:wrap}.danger-zone{margin-top:28px;padding-top:18px;border-top:1px solid var(--line)}.danger-zone summary{cursor:pointer;color:#a44242;font-size:14px}.danger-zone p{font-size:13px;color:var(--muted)}.danger-zone .danger{margin-top:12px}.toast[data-type=success]{background:#17634c}.toast[data-type=error]{background:#a33c3c}.toast[data-type=warning]{background:#8a5c13}
@media(max-width:650px){.account-button{font-size:13px;min-height:34px;padding:0 11px}.auth-dialog,.account-dialog{padding:31px 22px}.account-summary{grid-template-columns:1fr}.account-actions{display:grid}.session-item span{max-width:240px}.nav{width:100%;justify-content:flex-end}.brand{width:100%}}
@media print{.account-button,.dialog{display:none!important}}

/* Passwordless account flow and privacy links */
.auth-secondary-actions{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:8px}
.auth-secondary-actions .text-button{margin:0}
.text-button:disabled{color:#9ba5b6;cursor:default}
.auth-protection{margin:18px 0 0;padding:10px 12px;border-radius:9px;background:#f4f6fa;color:var(--muted);font-size:11px;line-height:1.6}
.auth-terms{margin-top:13px}
.auth-terms a,.beian [data-privacy]{color:#2457e6;text-decoration:underline;text-underline-offset:3px}

/* Password account and profile */
.auth-tabs{display:grid;grid-template-columns:1fr 1fr;gap:5px;margin:22px 0;padding:4px;border-radius:11px;background:#f0f3f8}
.auth-tabs button{min-height:38px;border:0;border-radius:8px;background:transparent;color:#66748a;font-weight:600}
.auth-tabs button.active{background:#fff;color:#1739a2;box-shadow:0 2px 9px #263b6514}
.auth-form label+label{margin-top:13px}
.auth-form[hidden]{display:none}
.auth-form .auth-lead{margin:0 0 18px;font-size:13px}
.code-input-row{display:grid;grid-template-columns:minmax(0,1fr) 124px;gap:8px;align-items:end}
.code-input-row .code-send{height:47px;margin-top:7px;padding:0 12px;white-space:nowrap}
.back-login{margin:12px auto 0}
.profile-editor{display:grid;grid-template-columns:118px 1fr;gap:24px;align-items:center;margin:24px 0;padding:20px;border:1px solid var(--line);border-radius:14px;background:#fbfcfe}
.avatar-editor{text-align:center}
.avatar-preview{width:78px;height:78px;margin:0 auto 5px;overflow:hidden;display:grid;place-items:center;border-radius:50%;background:linear-gradient(145deg,#244fc2,#7190ed);color:#fff;font-size:30px;font-weight:700}
.avatar-preview img{width:100%;height:100%;object-fit:cover}
.avatar-editor .text-button{display:inline;padding:4px;margin:0;font-size:12px}
.avatar-editor .avatar-remove{color:#9a4a4a}
.profile-editor form{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px 12px;align-items:end}
.profile-editor form label{grid-column:1/-1}
.profile-email{align-self:center;color:var(--muted);font-size:13px;word-break:break-all}
.profile-editor form .button{min-height:40px}
@media(max-width:650px){.profile-editor{grid-template-columns:1fr}.profile-editor form{grid-template-columns:1fr}.profile-editor form label{grid-column:auto}.code-input-row{grid-template-columns:minmax(0,1fr) 110px}.auth-tabs{margin-top:18px}}

/* Whole-exam mistake workflow */
.mistake-filter-links{margin:4px 0 0 18px;padding-left:8px;border-left:1px solid #dce3ee}.sub-link{font-size:12px;min-height:39px}.workflow-strip{display:grid;grid-template-columns:1fr auto 1fr auto 1fr;align-items:center;gap:18px;margin:28px 0 24px;padding:22px 26px;border:1px solid #dfe6f1;border-radius:16px;background:linear-gradient(135deg,#fff,#f5f8ff)}.workflow-strip>div{display:grid;grid-template-columns:auto 1fr;column-gap:12px;align-items:center}.workflow-strip b{grid-row:1/3;width:38px;height:38px;display:grid;place-items:center;border-radius:11px;background:#e9efff;color:#2457e6;font-size:12px}.workflow-strip strong{font-size:14px}.workflow-strip span{font-size:12px;color:var(--muted)}.workflow-strip i{font-style:normal;color:#9eabc0}.exam-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.exam-card{position:relative;overflow:hidden;min-height:205px;border:1px solid #dce4f0;border-radius:15px;background:#fff;box-shadow:0 6px 22px #172c4e08}.exam-card-accent{height:6px;background:linear-gradient(90deg,#2457e6,#83a4ff)}.exam-card-main{padding:20px}.exam-card-top,.exam-card-bottom{display:flex;align-items:center;justify-content:space-between;gap:12px}.exam-card-top{font-size:11px;color:var(--muted)}.exam-status{padding:5px 9px;border-radius:99px;background:#eaf0ff;color:#2457e6;font-weight:700}.exam-status.completed{background:#e8f5ef;color:#27785a}.exam-card h3{margin:22px 0 8px;font-size:19px}.exam-card p{margin:0 0 25px;color:var(--muted);font-size:13px}.compact{min-height:36px;padding:0 13px;font-size:12px}.exam-delete{margin:0;color:#8b96a8;font-size:11px}.exam-archived{font-size:12px;color:#6d7a8e}.upload-dialog{width:min(660px,calc(100% - 28px));padding:36px 40px}.upload-dialog form{position:relative}.upload-dialog h2{margin:5px 0 8px;font-size:28px}.dialog-lead{margin:0 0 24px;color:var(--muted);line-height:1.7}.upload-dialog label{display:block;margin-top:14px;color:#52647e;font-size:13px}.upload-dialog input,.upload-dialog select{width:100%;margin-top:7px;padding:12px 13px;border:1px solid var(--line);border-radius:10px;background:#fff}.file-picker{padding:21px;border:1px dashed #9eafe4!important;border-radius:12px;background:#f7f9ff;text-align:center;cursor:pointer}.file-picker input{position:absolute;width:1px;height:1px;opacity:0}.file-picker span,.file-picker small{display:block}.file-picker span{color:#2457e6;font-weight:700}.file-picker small{margin-top:5px;color:var(--muted)}.upload-file-list{max-height:190px;margin:14px 0 0;padding:0;overflow:auto;list-style:none;border:1px solid var(--line);border-radius:11px}.upload-file-list li{display:grid;grid-template-columns:28px 1fr auto;gap:10px;padding:10px 12px;border-bottom:1px solid #edf0f5;align-items:center}.upload-file-list li:last-child{border:0}.upload-file-list b{width:24px;height:24px;display:grid;place-items:center;border-radius:7px;background:#edf2ff;color:#2457e6;font-size:10px}.upload-file-list span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-size:12px}.upload-file-list small,.muted-row{color:var(--muted);font-size:11px}.upload-file-list .muted-row{display:block;text-align:center}.selection-dialog{width:min(1480px,calc(100% - 24px));height:min(900px,calc(100vh - 24px));max-height:none;border-radius:18px}.selector-shell{height:100%;display:grid;grid-template-rows:auto minmax(0,1fr) auto;background:#f6f8fc}.selector-head{position:relative;display:flex;align-items:center;justify-content:space-between;padding:20px 28px;border-bottom:1px solid #dce3ed;background:#fff}.selector-head h2{margin:3px 0;font-size:24px}.selector-head p{margin:0;color:var(--muted);font-size:12px}.selector-head .dialog-close{position:static;flex:none}.selector-layout{min-height:0;display:grid;grid-template-columns:175px minmax(0,1fr) 260px}.selector-layout>aside{min-height:0;padding:16px;border-right:1px solid #dde4ee;background:#fff;overflow:auto}.selector-layout>.question-aside{border-right:0;border-left:1px solid #dde4ee}.selector-side-title{display:flex;align-items:center;justify-content:space-between;margin-bottom:13px;font-size:12px}.selector-side-title span{color:var(--muted)}.page-thumbnails{display:grid;gap:10px}.page-thumb{width:100%;padding:7px;border:1px solid #dce3ed;border-radius:10px;background:#fff;color:#59677a;cursor:pointer}.page-thumb.active{border-color:#2457e6;box-shadow:0 0 0 3px #2457e612;color:#1739a2}.page-thumb img{width:100%;height:112px;display:block;object-fit:contain;background:#f1f3f7;border-radius:6px}.page-thumb span{display:block;margin-top:6px;font-size:10px}.selector-main{min-width:0;min-height:0;display:grid;grid-template-rows:auto minmax(0,1fr) auto}.selector-toolbar{min-height:55px;padding:9px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;border-bottom:1px solid #dfe5ee;background:#fbfcff;color:#59677a;font-size:12px}.selector-toolbar>div{display:flex;gap:8px;flex-wrap:wrap}.paper-stage{min-height:0;padding:20px;display:grid;place-items:center;overflow:auto;background-color:#e9edf4;background-image:linear-gradient(45deg,#e3e8f0 25%,transparent 25%),linear-gradient(-45deg,#e3e8f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e3e8f0 75%),linear-gradient(-45deg,transparent 75%,#e3e8f0 75%);background-size:22px 22px;background-position:0 0,0 11px,11px -11px,-11px 0}.page-canvas{position:relative;display:inline-block;line-height:0;box-shadow:0 14px 38px #21304d2b;background:#fff}.page-canvas img{display:block;max-width:min(860px,calc(100vw - 520px));max-height:calc(100vh - 240px);width:auto;height:auto;user-select:none}.page-canvas svg{position:absolute;inset:0;width:100%;height:100%;cursor:crosshair;touch-action:none}.selection-box rect{fill:#2457e619;stroke:#2457e6;stroke-width:5;vector-effect:non-scaling-stroke}.selection-box.active rect{fill:#4fda9d25;stroke:#16865c}.selection-box text{fill:#fff;stroke:#1739a2;stroke-width:8;paint-order:stroke;font:700 24px "Segoe UI";pointer-events:none}.selection-preview{fill:#2457e615;stroke:#2457e6;stroke-width:4;stroke-dasharray:12 8;vector-effect:non-scaling-stroke;pointer-events:none}.question-list{display:grid;gap:8px}.question-empty{padding:24px 10px;text-align:center;color:var(--muted);font-size:12px;line-height:1.7}.question-row{display:grid;grid-template-columns:52px minmax(0,1fr) 26px;gap:6px;align-items:center;padding:7px;border:1px solid #e1e6ee;border-radius:10px;background:#fff}.question-row.active{border-color:#7695ee;background:#f5f8ff}.question-select,.question-remove{border:0;background:none}.question-select{display:grid;text-align:left}.question-select b{color:#2457e6;font-size:12px}.question-select span{color:var(--muted);font-size:9px}.question-row input{min-width:0;padding:7px;border:0;border-bottom:1px solid transparent;background:transparent;font-size:11px}.question-row input:focus{outline:none;border-color:#8ca4e8}.question-remove{font-size:18px;color:#9b6570}.selector-footer{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 22px;border-top:1px solid #dce3ed;background:#fff}.selector-footer>div{display:flex;gap:9px}.delete-source-option{display:flex;align-items:center;gap:10px}.delete-source-option input{width:17px;height:17px;accent-color:#2457e6}.delete-source-option span{display:grid}.delete-source-option strong{font-size:12px}.delete-source-option small{color:var(--muted);font-size:10px}.mobile-page-nav{display:none}
@media(max-width:1050px){.exam-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.selector-layout{grid-template-columns:130px minmax(0,1fr) 220px}.page-canvas img{max-width:calc(100vw - 390px)}.workflow-strip{gap:10px;padding:18px}}
@media(max-width:760px){.workflow-strip{grid-template-columns:1fr;gap:9px}.workflow-strip i{display:none}.workflow-strip>div{grid-template-columns:42px 1fr}.exam-grid{grid-template-columns:1fr}.upload-dialog{padding:30px 20px}.selection-dialog{width:100%;height:100%;max-width:none;border-radius:0}.selector-head{padding:14px 16px}.selector-layout{grid-template-columns:1fr}.selector-layout>aside{display:none}.selector-toolbar{align-items:flex-start;flex-direction:column}.paper-stage{padding:12px}.page-canvas img{max-width:calc(100vw - 24px);max-height:calc(100vh - 330px)}.mobile-page-nav{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:#fff}.selector-footer{align-items:stretch;flex-direction:column;padding:12px}.selector-footer>div{display:grid;grid-template-columns:1fr 1.3fr}.delete-source-option{align-items:flex-start}.field-row{grid-template-columns:1fr}.workspace-main{padding-top:24px}}
/* Spacious editing workspace with full mobile controls. */
.selector-layout{grid-template-columns:132px minmax(0,1fr) 310px}.selector-main{min-height:0;grid-template-rows:auto auto minmax(0,1fr) auto}.selector-toolbar{justify-content:flex-start;flex-wrap:wrap;gap:6px;padding:10px}.selector-toolbar button,.group-tools button,.region-row button,.queue-actions button{border:1px solid #dce4f0;border-radius:7px;background:white;color:#405673;padding:6px 9px;cursor:pointer}.selector-toolbar button.active{background:#2457e6;color:white}.selector-toolbar button:disabled,button:disabled{opacity:.45;cursor:default}#drawHint{margin:0;padding:8px 14px;font-size:12px;color:#586b84;background:#f7f9fd}#saveStatus{font-size:12px;color:#436b61}.paper-stage{display:block;padding:20px;position:relative;overscroll-behavior:contain}.page-canvas{display:block;margin:auto;flex:none}.page-canvas img{width:100%;height:100%;max-width:none;max-height:none;pointer-events:none}.selection-box rect{stroke-width:2}.selection-box.selected rect{fill:#2b66ed33}.selection-box .handle{fill:white;stroke:#2457e6;stroke-width:2;cursor:nwse-resize}.selection-box text{font-size:18px;stroke-width:5}.group-tools{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:12px}.group-tools select{max-width:170px;border:1px solid #dce4f0;border-radius:6px;padding:6px}.editable-question{border:1px solid #dde5f0;border-radius:12px;background:#fff;overflow:hidden}.editable-question.active{border-color:#7196f4;box-shadow:0 0 0 2px #2457e610}.editable-question>header{display:flex;align-items:center;gap:5px;padding:9px;background:#f6f8fd}.editable-question input[type=text]{width:100%;min-width:0;border:0;background:transparent;padding:5px;color:#263c5c}.region-row{display:flex;align-items:center;gap:5px;padding:8px;border-top:1px solid #edf1f7;font-size:11px;flex-wrap:wrap}.region-row canvas{width:64px;height:43px;object-fit:contain;background:#f1f4f9}.region-row button{font-size:10px;padding:4px}.region-row input{accent-color:#2457e6}.upload-file-list{max-height:310px}.upload-file-list li{grid-template-columns:42px minmax(0,1fr) auto}.upload-file-list img{width:40px;height:52px;object-fit:contain;background:#edf1f7;border-radius:5px}.upload-file-list strong,.upload-file-list small{display:block;white-space:normal;overflow-wrap:anywhere}.upload-file-list strong{font-size:12px}.upload-file-list progress{width:100%;height:5px;accent-color:#2457e6}.queue-actions{display:flex;gap:3px;flex-wrap:wrap;max-width:105px}.queue-actions button{font-size:11px;padding:4px}.file-picker:focus-within{outline:2px solid #2457e6}.crop-preview-dialog{width:min(1100px,calc(100% - 24px));max-height:94vh;padding:0;border-radius:18px}.crop-preview-dialog>header,.crop-preview-dialog>footer{padding:20px 24px;display:flex;gap:12px;align-items:center;justify-content:space-between;background:#fff}.crop-preview-dialog h2{margin:0 0 5px}.crop-preview-dialog p{margin:0;font-size:13px;color:#66758a}.layout-options{display:flex;gap:14px;align-items:end;flex-wrap:wrap;padding:16px 24px;border-block:1px solid #e1e7ef;background:#f7f9fd}.layout-options label{display:grid;gap:6px;font-size:12px}.layout-options input,.layout-options select{width:110px;padding:8px;border:1px solid #dce4f0;border-radius:7px}#previewCards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;padding:24px;background:#f3f6fb}.crop-preview-card{min-width:0;border:1px solid #dde5f0;border-radius:12px;background:white;padding:15px}.crop-preview-card img{display:block;max-width:100%;max-height:360px;margin:12px auto;object-fit:contain;cursor:zoom-in}.crop-preview-card .original-size{max-width:none;max-height:none;cursor:zoom-out}.crop-preview-card{overflow:auto}.crop-preview-card button{margin:4px}.crop-preview-card h3{font-size:15px;margin:0}.crop-preview-card [data-status]{font-size:12px;color:#526c8a}.crop-preview-dialog footer{flex-wrap:wrap;position:sticky;bottom:0;border-top:1px solid #dde5f0}.selector-footer p{font-size:12px;color:#60728b;margin:0}
@media(max-width:1000px){.selector-layout{grid-template-columns:95px minmax(0,1fr) 260px}.selector-layout>aside{padding:10px}.selector-head{padding:12px 18px}}
@media(max-width:760px){.selection-dialog{height:100dvh}.selector-layout{grid-template-columns:minmax(0,1fr);position:relative}.selector-layout>.question-aside{display:none;position:absolute;inset:0 0 48px auto;width:min(340px,90%);z-index:5;box-shadow:-15px 0 30px #20345126}.show-questions .selector-layout>.question-aside{display:block}.selector-toolbar{flex-direction:row;align-items:center}.selector-toolbar button{padding:7px;font-size:11px}.selector-head h2{font-size:18px}.selector-head{gap:8px}.selector-head .eyebrow{display:none}.mobile-page-nav{display:flex;gap:5px;position:relative;z-index:6}.mobile-page-nav button{font-size:11px}.selector-footer{gap:8px}.paper-stage{padding:12px}.crop-preview-dialog{width:100%;max-width:none;max-height:100dvh;border-radius:0}#previewCards{grid-template-columns:1fr;padding:12px}.crop-preview-dialog>header,.crop-preview-dialog>footer{padding:14px}.layout-options{padding:12px;gap:8px}.layout-options input,.layout-options select{width:80px}}

.question-heading{display:flex;gap:4px;padding:8px;background:#f6f8fd;align-items:center}.question-heading input{min-width:0;width:100%;border:0;background:transparent;padding:6px}.question-heading button{border:0;background:#e8efff;border-radius:5px;padding:6px;color:#2457e6}.region-locate{display:grid;gap:4px}.aside-help,.footer-tip{font-size:12px;color:#65778f;line-height:1.6}.crop-image-scroll{overflow:auto;max-height:440px}.selection-box .resize-handle{fill:white;stroke:#2457e6;cursor:nwse-resize}.page-canvas{width:max-content;height:max-content}
.canvas-tools{padding:10px 14px;display:flex;flex-wrap:wrap;gap:8px;background:#fff;border-bottom:1px solid #dde5f0}.tool-cluster{display:flex;gap:5px;align-items:center;flex-wrap:wrap}.canvas-tools button,.mobile-page-nav button,.crop-preview-card button{border:1px solid #dce4f0;border-radius:7px;background:#fff;padding:8px 10px;color:#405673;font:12px "Segoe UI","Microsoft YaHei",sans-serif;cursor:pointer}.canvas-tools button.active{color:#fff;background:#2457e6;border-color:#2457e6}#zoomLabel{font-size:12px;min-width:38px;text-align:center}.crop-preview-card>header{display:flex;align-items:center;justify-content:space-between;gap:10px}.selector-head>div:last-of-type{display:flex;align-items:center;gap:14px}.crop-preview-card .preview-state{margin:10px 0}.crop-preview-card img{min-height:0}.crop-preview-dialog footer>div{display:flex;gap:8px;flex-wrap:wrap}
@media(max-width:760px){.canvas-tools{padding:8px;gap:5px}.canvas-tools button{min-height:36px;padding:6px 8px}.region-row button{min-height:34px}.group-tools button{min-height:36px}.question-heading button{min-width:30px;min-height:34px}.selector-head #saveStatus{margin-right:12px}}
/* V2: a full-window composition workspace and readable libraries. */
body.composition-open{overflow:hidden}.composition-open>.site-header,.composition-open>main,.composition-open>.site-footer{visibility:hidden}
#selectionDialog{position:fixed;inset:0;width:100vw;height:100dvh;max-width:none;max-height:none;margin:0;padding:0;border:0;border-radius:0;z-index:80;background:#f3f6fb;overflow:hidden;box-shadow:none}
#selectionDialog[hidden]{display:none!important}.selector-shell{grid-template-rows:auto auto minmax(0,1fr) auto}.selector-head{padding:12px 22px;min-height:74px}.selector-head h2{font-size:21px}.selector-head .eyebrow{margin:0;font-size:9px}.selector-head .dialog-close{width:34px;height:34px}.save-indicator{display:flex;gap:12px;align-items:center}
.workbench-nav{display:flex;gap:8px;padding:8px 20px;background:#fff;border-bottom:1px solid #dde5ef}.workbench-nav button,.source-picker button:not(.button),.reader-dialog button,.tray-heading button{border:1px solid #dce4ef;background:#fff;color:#405672;border-radius:8px;padding:8px 12px;font:inherit;font-size:12px;cursor:pointer}.workbench-nav button.active{color:#fff;background:#2457e6;border-color:#2457e6}.workbench-nav button:last-child{margin-left:auto}
.selector-layout{grid-template-columns:210px minmax(0,1fr) 340px}.selector-layout>aside{padding:14px}.selector-layout>.question-aside{resize:horizontal;min-width:260px;max-width:520px}.selector-main{position:relative;min-height:0}.hide-sources .selector-layout{grid-template-columns:0 minmax(0,1fr) 340px}.hide-sources .selector-layout>aside:first-child{visibility:hidden;padding:0;overflow:hidden}.hide-inspector .selector-layout{grid-template-columns:210px minmax(0,1fr) 0}.hide-inspector .question-aside{visibility:hidden;min-width:0;padding:0;overflow:hidden}.hide-sources.hide-inspector .selector-layout{grid-template-columns:0 minmax(0,1fr) 0}
#sourceSwitch{width:100%;margin:12px 0;padding:9px 6px;border:1px solid #dce4f0;border-radius:8px;background:#fff;font-size:12px}.page-thumb img{height:150px}.page-thumb span{font-size:12px}.question-heading{gap:3px}.question-heading>button:first-child{flex:1;text-align:left;overflow:hidden;text-overflow:ellipsis;font-size:12px}.question-heading>span{font-size:10px;color:#74849b;white-space:nowrap}.question-heading button{padding:6px;min-width:26px}.region-row{flex-wrap:nowrap;gap:6px}.region-locate{flex:1;min-width:0;align-items:center;justify-items:start;overflow:hidden;border:0!important}.region-locate canvas{width:110px;height:65px}.region-locate span{font-size:10px;line-height:1.4;text-align:left;white-space:normal}.piece-actions{display:flex;gap:3px;flex-wrap:wrap;max-width:60px}.region-row input[type=checkbox]{width:17px;height:17px;flex:none}.question-details{margin-top:14px;padding:14px;border:1px solid #dce4f0;border-radius:10px;background:#f8faff}.question-details h3{font-size:13px;margin:0 0 10px}.question-details label{display:grid;gap:5px;font-size:11px;color:#526780;margin-top:9px}.question-details input,.question-details select,.question-details textarea{width:100%;padding:8px;border:1px solid #dce4ef;border-radius:6px;background:#fff;font:12px/1.5 inherit;min-width:0}.question-details textarea{resize:vertical;min-height:65px}.tray-heading{display:flex;justify-content:space-between;gap:8px;align-items:center;border-top:1px solid #dce4ef;margin-top:18px;padding-top:12px}.tray-heading h3{font-size:13px;margin:0}.tray-heading button{padding:5px;font-size:10px}#fragmentTray{background:#f8faff;border-radius:10px;margin:10px 0 14px}.aside-help{font-size:11px;margin:6px 0 12px}.group-tools button{font-size:11px}.selector-footer{padding:10px 20px}.selector-footer .button{min-height:38px;font-size:12px;padding:8px 14px}.selector-footer>div{flex-wrap:wrap}
.composition-preview{position:absolute;inset:0;z-index:4;background:#f3f6fb;overflow:auto}.composition-preview[hidden]{display:none}.composition-preview>header{display:flex;align-items:center;justify-content:space-between;padding:16px 22px;background:#fff;border-bottom:1px solid #dce4ef}.composition-preview h2{font-size:20px;margin:0}.composition-preview .eyebrow{display:none}.composition-preview p{font-size:12px;color:#61738c}.composition-preview .layout-options{padding:10px 20px}.composition-preview #previewCards{display:block;padding:18px}.composition-preview .crop-preview-card{max-width:none;padding:18px;overflow:visible}.composition-preview .crop-image-scroll{max-height:none;overflow:auto}.composition-preview .crop-preview-card img{max-height:none;max-width:100%;height:auto;min-width:0}.composition-preview .crop-preview-card img.original-size{max-width:none}.composition-preview>footer{display:none}.publishing .selector-layout{opacity:.7}.publishing{cursor:progress}
.source-picker{width:min(760px,94vw);padding:25px;max-height:90dvh;overflow:auto}.source-picker header,.source-picker footer{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:15px}.source-picker h2{font-size:22px;margin:0}.source-picker input:not([type=checkbox]):not([type=radio]){width:100%;padding:10px;border:1px solid #dce4ef;border-radius:8px;margin:7px 0 13px}.source-choice{display:flex;align-items:center;gap:14px;padding:13px 8px;border-bottom:1px solid #e5eaf1;font-size:13px}.source-choice span{flex:1;min-width:0}.source-choice strong,.source-choice small{display:block}.source-choice small{color:#6e7e95;margin-top:5px}.source-choice img{width:70px;height:90px;object-fit:contain;background:#f4f7fa}#mergeCandidates label{display:block;padding:14px;border:1px solid #dce4ef;border-radius:9px;margin:10px 0}#mergeCandidates small{display:block;padding:8px;color:#65778f;white-space:pre-wrap;overflow-wrap:anywhere}
.workspace-main{padding:25px 28px 45px;min-width:0}.workspace{grid-template-columns:185px minmax(0,1fr)}.workspace-head{margin-bottom:20px}.workspace-head p:last-child{margin-bottom:0}.workflow-strip{display:none}.workspace-sidebar{padding:25px 14px}.sidebar-tip{display:none}.library-actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:16px 0}.library-actions select{padding:10px;border:1px solid #dce4ef;border-radius:8px;background:#fff;font-size:12px}.exam-grid{grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:22px}.exam-cover{border:0;background:#edf2f8;width:100%;padding:12px;cursor:pointer}.exam-cover img{width:100%;height:260px;object-fit:contain;display:block}.exam-card h3{margin:14px 0 8px}.exam-card-bottom{flex-wrap:wrap;justify-content:flex-start}.exam-card p{margin-bottom:16px}.mistake-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}.mistake-image{height:360px;padding:18px;background:#f5f7fb}.mistake-image img{width:100%;height:100%;max-height:none;object-fit:contain}.mistake-card{position:relative}.library-card-actions{display:flex;gap:10px;align-items:center;padding:10px 16px;border-bottom:1px solid #e4eaf2;font-size:12px;color:#596f89}.library-card-actions label{display:flex;align-items:center;gap:7px}.library-card-actions button{border:0;background:#eef3ff;padding:6px;border-radius:5px;color:#2457e6}.compact-library{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}.compact-library .mistake-image{height:210px}.reader-dialog{width:100vw;height:100dvh;max-width:none;max-height:none;border:0;border-radius:0;padding:0;background:#eef2f8}.reader-dialog>header,.reader-dialog>footer{position:sticky;z-index:2;background:#fff;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:13px 22px}.reader-dialog>header{top:0;border-bottom:1px solid #dce4f0}.reader-dialog>footer{bottom:0;border-top:1px solid #dce4f0}.reader-dialog h2{font-size:18px;flex:1;margin:0}.reader-image{min-height:calc(100dvh - 140px);overflow:auto;padding:25px}.reader-image img{display:block;max-width:min(1100px,100%);height:auto;margin:auto;box-shadow:0 12px 32px #21345112}.reader-image img.original-size{max-width:none}
@media(min-width:1700px){.selector-layout{grid-template-columns:240px minmax(0,1fr) 390px}.hide-sources .selector-layout{grid-template-columns:0 minmax(0,1fr) 390px}.hide-inspector .selector-layout{grid-template-columns:240px minmax(0,1fr) 0}.hide-sources.hide-inspector .selector-layout{grid-template-columns:0 minmax(0,1fr) 0}.mistake-image{height:460px}}
@media(max-width:1000px){.selector-layout{grid-template-columns:150px minmax(0,1fr) 290px}.hide-sources .selector-layout{grid-template-columns:0 minmax(0,1fr) 290px}.hide-inspector .selector-layout{grid-template-columns:150px minmax(0,1fr) 0}.hide-sources.hide-inspector .selector-layout{grid-template-columns:0 minmax(0,1fr) 0}.workspace{grid-template-columns:150px minmax(0,1fr)}.workspace-main{padding:22px 16px}.mistake-grid{grid-template-columns:1fr}.exam-grid{grid-template-columns:repeat(auto-fill,minmax(260px,1fr))}}
@media(max-width:760px){.workspace{display:block}.selector-layout,.hide-sources .selector-layout,.hide-inspector .selector-layout,.hide-sources.hide-inspector .selector-layout{grid-template-columns:minmax(0,1fr)}.selector-layout>.question-aside{display:none;resize:none;position:absolute;inset:0 0 48px 0;width:100%;max-width:none;min-width:0;z-index:8;visibility:visible}.show-questions .selector-layout>.question-aside{display:block}.selector-layout>aside:first-child{display:none;position:absolute;inset:0 0 48px 0;z-index:9;visibility:visible}.show-sources .selector-layout>aside:first-child{display:block;padding:14px}.workbench-nav{padding:7px;gap:5px}.workbench-nav button{font-size:11px;padding:9px 7px;min-height:40px}.selector-head{padding:10px 12px;min-height:65px}.selector-head h2{font-size:17px}.selector-head .eyebrow{display:none}.save-indicator{gap:7px}#saveStatus{max-width:110px;font-size:10px}.selector-footer{padding:8px 10px}.selector-footer>.footer-tip{display:none}.selector-footer>div{display:flex;gap:5px}.selector-footer .button{flex:1;min-height:42px;padding:8px;font-size:11px}.mobile-page-nav{z-index:10}.mobile-page-nav button{min-height:42px}#mobilePageNumber{font-size:11px;text-overflow:ellipsis;overflow:hidden;white-space:nowrap}.composition-preview{bottom:48px}.composition-preview>header{padding:12px}.composition-preview h2{font-size:17px}.composition-preview #previewCards{padding:8px}.composition-preview .crop-preview-card{padding:10px}.region-row .piece-actions button,.group-tools button,.question-heading button{min-height:42px}.region-row input[type=checkbox]{width:22px;height:22px}.reader-dialog>header{flex-wrap:wrap;padding:10px}.reader-dialog h2{order:-1;width:100%;flex:auto}.reader-image{padding:10px}.reader-dialog button{min-height:42px}.reader-dialog>footer{padding:10px;gap:6px}.reader-dialog>footer button{font-size:11px}.library-actions{gap:6px}.library-actions .button{font-size:11px}.workspace-main{padding:18px 12px}.mistake-image{height:340px}}
.inspector-tabs{display:flex;gap:8px;margin:10px 0}.inspector-tabs button{flex:1;padding:9px;border:1px solid #dce4ef;border-radius:8px;background:#fff;color:#526780;font-size:12px;cursor:pointer}.inspector-tabs button.active{background:#eaf0ff;border-color:#98b1f4;color:#2457e6}.question-details{display:none}.inspector-details .question-details:not([hidden]){display:block}.inspector-details .group-tools,.inspector-details #fragmentTray,.inspector-details .tray-heading,.inspector-details .aside-help,.inspector-details #appendRegionButton,.inspector-details .editable-question .region-row{display:none}#fragmentTray{max-height:255px;overflow:auto}.question-details{margin-top:12px}.tray-heading{margin-top:10px;padding-top:10px}.selector-head .save-indicator #saveStatus{font-size:11px}.source-picker::backdrop,.reader-dialog::backdrop{background:#26344866}
@media(max-width:760px){.inspector-tabs button{min-height:44px}.selector-head{height:70px}.selector-head .eyebrow,.selector-head #selectorMeta{font-size:10px}.composition-preview>header{padding:10px 12px}.composition-preview>header p{margin:5px 0}.composition-preview .layout-options{padding:8px 12px;gap:7px}.composition-preview .layout-options input,.composition-preview .layout-options select{width:64px;padding:7px}.composition-preview .layout-options .button{min-height:34px;padding:6px 10px;font-size:11px}.composition-preview .layout-options label{font-size:10px}.tray-heading{margin-top:6px}}
.inspector-width{display:flex;align-items:center;gap:12px;font-size:10px;color:#718099;margin-bottom:10px}.inspector-width input{flex:1;min-width:0;accent-color:#2457e6}.selector-layout>.question-aside{resize:none}
@media(min-width:761px){.selector-layout{grid-template-columns:210px minmax(0,1fr) var(--inspector-width,340px)}.hide-sources .selector-layout{grid-template-columns:0 minmax(0,1fr) var(--inspector-width,340px)}.hide-inspector .selector-layout{grid-template-columns:210px minmax(0,1fr) 0}.hide-sources.hide-inspector .selector-layout{grid-template-columns:0 minmax(0,1fr) 0}}
@media(max-width:760px){.inspector-width{display:none}.workbench-nav{flex-wrap:wrap}.workbench-nav button{min-height:36px;padding:6px 8px}.workbench-nav #undoRegionButton,.workbench-nav #redoRegionButton{order:2}.workbench-nav #toggleInspector{margin-left:0}.mobile-page-nav #mobilePageNumber{max-width:150px}}

/* Review paper editor */
body.review-open{overflow:hidden}.review-open>.site-header,.review-open>main,.review-open>.site-footer{visibility:hidden}.review-editor{position:fixed;inset:0;z-index:90;background:#edf1f7;color:#17233b;display:grid;grid-template-rows:auto minmax(0,1fr)}.review-editor[hidden]{display:none}.review-editor>header{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px 24px;background:#fff;border-bottom:1px solid #dbe2ed}.review-editor>header>div:last-child{display:flex;gap:8px}.review-editor .eyebrow{margin:0 0 4px}.review-editor #reviewTitle{border:0;padding:0;font:700 23px/1.2 "Segoe UI","Microsoft YaHei",sans-serif;color:#17233b;outline:none}.review-editor #reviewSaveState{font-size:11px;color:#778398;margin:4px 0 0}.review-editor-grid{display:grid;grid-template-columns:310px minmax(520px,1fr) 280px;min-height:0}.review-editor-grid>aside,.review-preview-panel{min-height:0;overflow:auto}.review-items-panel,.review-settings{background:#fff;padding:18px;border-right:1px solid #dbe2ed}.review-settings{border:0;border-left:1px solid #dbe2ed}.review-panel-title,.review-preview-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}.review-item{display:grid;grid-template-columns:74px 1fr auto;gap:10px;padding:10px 0;border-bottom:1px solid #e7ebf2}.review-item img{width:74px;height:66px;object-fit:contain;background:#f2f4f7;border-radius:6px}.review-item b,.review-item small{display:block}.review-item b{font-size:12px}.review-item small{font-size:10px;color:#8290a4;margin:3px 0 7px}.review-item label{display:block;font-size:10px;color:#66758c;margin-top:5px}.review-item input,.review-item select{max-width:100px;padding:4px;border:1px solid #dce3ee;border-radius:5px;font-size:10px}.review-item nav{display:flex;flex-direction:column;gap:3px}.review-item nav button{border:1px solid #dce3ee;background:white;border-radius:5px;cursor:pointer}.review-preview-panel{padding:18px 24px}.review-pages{display:flex;flex-direction:column;align-items:center;gap:22px}.review-page{box-sizing:border-box;width:210mm;min-height:297mm;padding:15mm;background:#fff;box-shadow:0 8px 32px #24324b22;color:#111;position:relative}.review-page>header{border-bottom:1px solid #aaa;padding-bottom:5mm;margin-bottom:6mm}.review-page>header h3{text-align:center;margin:0 0 5mm}.review-page>header span{font-size:11px}.review-page article{margin-bottom:7mm}.review-page article b{font-size:12px;display:block;margin-bottom:3mm}.review-page article img{display:block;max-width:100%;max-height:150mm;object-fit:contain}.review-page article div{border-bottom:1px dashed #ddd}.review-page>footer{position:absolute;bottom:8mm;left:0;right:0;text-align:center;font-size:10px}.review-settings>label{display:block;font-size:12px;color:#53647b;margin-top:14px}.review-settings input:not([type=checkbox]),.review-settings select{display:block;width:100%;box-sizing:border-box;margin-top:5px;padding:9px;border:1px solid #d8e0eb;border-radius:7px;background:#fff}.review-settings .review-check{display:flex;align-items:center;gap:7px}.review-exports{border-top:1px solid #e1e6ee;margin-top:18px;padding-top:16px}.review-exports article{padding:9px 0;border-bottom:1px solid #edf0f5;font-size:11px}.review-exports article span{display:block;color:#68778b}.review-exports a{display:inline-block;margin:5px 10px 0 0;color:#2457e6}.review-exports p{font-size:11px;color:#8793a5}#reviewSheetChoices>button{width:100%;display:flex;justify-content:space-between;text-align:left;margin-bottom:7px}#reviewSheetChoices>button span{color:#7b8798}
@media(max-width:1000px){.review-editor-grid{grid-template-columns:240px minmax(450px,1fr)}.review-settings{position:absolute;right:0;top:83px;bottom:0;width:260px;box-shadow:-10px 0 30px #26344a22}.review-preview-panel{padding-right:300px}.review-page{transform-origin:top center;zoom:.72}}
@media(max-width:720px){.review-editor>header{padding:10px;align-items:flex-start}.review-editor>header>div:last-child{flex-wrap:wrap;justify-content:flex-end}.review-editor #reviewTitle{font-size:18px;width:170px}.review-editor-grid{display:block;overflow:auto}.review-items-panel{height:auto}.review-preview-panel{padding:14px;overflow:visible}.review-settings{position:static;width:auto;box-shadow:none}.review-page{zoom:.43}.review-editor{overflow:auto;display:block}.review-editor-grid>aside{overflow:visible}}

/* Simpler default workflow. */
.mistake-grid.compact-library{grid-template-columns:repeat(auto-fill,minmax(235px,1fr))}.compact-library .mistake-image{height:180px}.mastery-action{margin-top:10px;border:0;border-radius:7px;background:#edf2ff;color:#2457e6;padding:7px 10px;font:600 11px inherit;cursor:pointer}.mastery-action:hover{background:#dfe8ff}.simple-workbench #toggleSources,.simple-workbench #toggleInspector,.simple-workbench #actualSize,.simple-workbench #rotateLeft,.simple-workbench #rotateRight,.simple-workbench .group-tools,.simple-workbench .inspector-width,.simple-workbench .inspector-tabs,.simple-workbench .piece-actions,.simple-workbench #appendRegionButton,.simple-workbench .tray-heading button{display:none}.simple-workbench .aside-help{padding:9px;border-radius:8px;background:#f3f6fb;color:#61718a}.simple-workbench .selector-footer #saveDraftButton,.simple-workbench .selector-footer #saveAllQuestions{display:none}.simple-workbench .selector-footer #generateButton{min-width:150px}.simple-workbench #advancedWorkbench{margin-left:auto}.review-editor .review-exports>strong{font-size:0}.review-editor .review-exports>strong:after{content:'下载';font-size:13px}.review-editor .review-exports p{font-size:0}.review-editor .review-exports p:after{content:'生成后会自动下载题目卷';font-size:11px}
@media(max-width:720px){.compact-library .mistake-image{height:155px}.simple-workbench #advancedWorkbench{margin-left:0}}