.classroom-controls{display:flex;justify-content:space-between;align-items:center;gap:16px;margin:24px 0}.classroom-controls .search-wrap{max-width:320px}.classroom-count{color:var(--muted);font-size:14px;margin:0 0 18px}.classroom-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.classroom-card{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:20px;overflow:hidden;text-decoration:none;color:var(--ink);transition:box-shadow .15s,transform .15s}.classroom-card:hover{transform:translateY(-2px);box-shadow:0 8px 24px #163f3510}.classroom-card>img{width:100%;height:170px;object-fit:cover}.classroom-card-art{height:140px;background:var(--green-soft);display:flex;justify-content:center;align-items:center;gap:14px;color:var(--green);font-weight:600}.classroom-card-art svg{width:36px;height:36px}.classroom-card-content{padding:22px;display:flex;flex-direction:column;flex:1}.classroom-meta{display:flex;align-items:center;gap:12px;color:var(--muted);font-size:13px;flex-wrap:wrap}.classroom-badge{padding:3px 8px;border-radius:6px;background:var(--green-soft);color:var(--green);font-size:12px}.classroom-card h2{font-size:20px;line-height:1.5;margin:16px 0 8px;overflow-wrap:anywhere}.classroom-card p{margin:0 0 24px;color:var(--muted);font-size:14px;line-height:1.8;overflow-wrap:anywhere}.classroom-card-bottom{display:flex;justify-content:space-between;gap:8px;align-items:center;margin-top:auto;font-size:12px;color:var(--muted)}.classroom-card-bottom span:last-child{display:flex;gap:6px;align-items:center;color:var(--green)}.classroom-card-bottom svg{width:16px;height:16px}.classroom-pagination{display:flex;justify-content:center;align-items:center;gap:20px;margin:30px 0}.classroom-reader-nav{display:flex;justify-content:space-between;align-items:center;color:var(--muted);max-width:850px;margin:0 auto 24px}.classroom-reader-panel{max-width:850px;margin:auto;background:var(--surface);border:1px solid var(--line);border-radius:24px;padding:40px 48px}.classroom-reading h1{font-size:30px;line-height:1.5;margin:18px 0;overflow-wrap:anywhere}.classroom-intro{color:var(--muted);line-height:1.8;border-bottom:1px solid var(--line);padding-bottom:24px;margin-bottom:28px;overflow-wrap:anywhere}.classroom-reading-cover{width:100%;max-height:380px;object-fit:cover;border-radius:12px;margin-bottom:24px}.classroom-body{font-size:16px;line-height:1.9;overflow-wrap:anywhere}.classroom-body p{margin:0 0 20px}.classroom-body h2,.classroom-body h3,.classroom-body h4{margin:30px 0 12px;line-height:1.5}.classroom-body h2{font-size:24px}.classroom-body h3{font-size:20px}.classroom-body h4{font-size:18px}.classroom-body ul{padding-left:24px;margin-bottom:24px}.classroom-body li{margin:6px 0}.classroom-body figure{margin:24px 0}.classroom-body img{max-width:100%;height:auto;border-radius:10px}.classroom-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}.classroom-paywall{padding:24px;background:var(--green-soft);border-radius:12px;text-align:center;margin:24px 0}.classroom-preview-label{color:var(--green);font-size:12px;margin:0 0 22px}.classroom-admin-note{background:var(--green-soft);color:var(--ink);padding:14px 18px;border-radius:12px;line-height:1.7;font-size:14px;margin:16px 0 24px}.classroom-editor{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:24px;align-items:start}.classroom-editor-fields{padding:28px}.classroom-editor-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.classroom-editor .form-field{margin-bottom:20px;min-width:0}.classroom-editor textarea{width:100%;resize:vertical;min-height:110px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink);padding:14px;font:inherit;line-height:1.7}.classroom-editor-preview{position:sticky;top:calc(var(--admin-topbar-height,64px) + 24px);padding:32px;max-height:calc(100vh - 112px);overflow:auto}.classroom-editor-actions{display:flex;gap:12px;justify-content:flex-end}.classroom-editor-preview .classroom-reading h1{font-size:26px}
@media(max-width:1050px){.classroom-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.classroom-editor{grid-template-columns:1fr}.classroom-editor-preview{position:static;max-height:none}}
@media(max-width:640px){.classroom-controls{flex-direction:column;align-items:stretch;gap:16px}.classroom-controls .search-wrap{max-width:none}.classroom-controls .filter-list{gap:6px;flex-wrap:wrap}.classroom-controls .filter-button{padding:9px 12px}.classroom-grid{grid-template-columns:1fr;gap:16px}.classroom-card-content{padding:20px}.classroom-card-art{height:100px}.classroom-reader-panel{padding:24px 20px;border-radius:18px}.classroom-reading h1{font-size:25px}.classroom-body{font-size:16px}.classroom-editor-fields,.classroom-editor-preview{padding:20px}.classroom-editor-row{gap:12px}.classroom-editor-actions{justify-content:stretch}.classroom-editor-actions button{flex:1}}

/* Compact article list on phones; keep desktop covers. */
.classroom-controls .search-wrap{margin-bottom:0}
@media(max-width:640px){
 .classroom-title{position:relative;align-items:flex-start;margin-bottom:18px}
 .classroom-title .eyebrow{display:none}
 .classroom-title h1{font-size:24px;padding-right:90px}
 .classroom-title>.text-button{position:absolute;right:0;top:5px;font-size:12px;gap:5px}
 .classroom-title .page-subtitle{font-size:12px;line-height:1.7;margin-top:7px}
 .classroom-controls{gap:12px;margin:18px 0}
 .classroom-controls .filter-list{flex-wrap:nowrap;gap:4px;overflow-x:auto}
 .classroom-controls .filter-button{flex:1;padding:8px 9px}
 .classroom-controls .search-wrap input{padding:10px 8px;font-size:16px}
 .classroom-count{font-size:12px;margin-bottom:12px}
 .classroom-grid{gap:12px}
 .classroom-card{border-radius:14px}
 .classroom-card-art{display:none}
 .classroom-card>img{height:132px}
 .classroom-card-content{padding:16px 18px}
 .classroom-card h2{font-size:18px;line-height:1.5;margin:10px 0 6px}
 .classroom-card p{font-size:13px;line-height:1.7;margin-bottom:16px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
 .classroom-meta{font-size:12px;gap:8px}
 .classroom-badge{font-size:11px;padding:2px 6px}
 .classroom-card-bottom{font-size:11px}
}
/* Shared, restrained article typography for public reading and admin previews. */
.classroom-body a{color:var(--green);text-decoration:underline;text-underline-offset:3px}.classroom-body blockquote{margin:20px 0;padding:12px 18px;border-left:3px solid var(--green);background:var(--surface-soft);color:var(--muted);border-radius:0 8px 8px 0}.classroom-body blockquote p:last-child{margin-bottom:0}.classroom-body table{display:block;max-width:100%;overflow:auto;border-collapse:collapse;margin:22px 0;font-size:14px}.classroom-body th,.classroom-body td{border:1px solid var(--line);padding:10px 14px;min-width:80px}.classroom-body th{background:var(--surface-soft)}.classroom-body pre{overflow:auto;background:var(--surface-soft);padding:16px;border-radius:10px}.classroom-body code{font-size:.9em;background:var(--surface-soft);padding:2px 5px;border-radius:4px}.classroom-body pre code{padding:0}.classroom-body hr{border:0;border-top:1px solid var(--line);margin:28px 0}.classroom-body ol{padding-left:24px}.classroom-rich-field>span{display:block;margin-bottom:10px}.lesson-editor-host:not(.is-ready){display:none}.classroom-editor .lesson-editor-host{border:1px solid var(--line);border-radius:12px;background:var(--surface);--border-color:var(--line);--toolbar-background:var(--surface-soft);--panel-background:var(--surface);--textarea-background-color:var(--surface);--textarea-text-color:var(--ink);--second-color:var(--muted);--toolbar-icon-color:var(--muted);--toolbar-icon-hover-color:var(--green)}.classroom-editor .vditor-toolbar{padding:8px;border-bottom:1px solid var(--line);border-radius:12px 12px 0 0}.classroom-editor .vditor-toolbar button{border:0;background:none;box-shadow:none;padding:0;border-radius:4px}.classroom-editor .vditor-toolbar svg{width:15px;height:15px}.classroom-editor .vditor-reset{font:inherit;font-size:15px;line-height:1.85;padding:18px!important;min-width:0;overflow-wrap:anywhere;color:var(--ink)}.classroom-editor .vditor-reset h1,.classroom-editor .vditor-reset h2,.classroom-editor .vditor-reset h3{line-height:1.5;margin:18px 0 10px}.classroom-editor .vditor-reset h1{font-size:24px}.classroom-editor .vditor-reset h2{font-size:20px}.classroom-editor .vditor-reset h3{font-size:18px}.classroom-editor .vditor-reset p{margin:0 0 16px}.classroom-editor .vditor-reset blockquote{border-left:3px solid var(--green);padding:10px 16px;background:var(--surface-soft);color:var(--muted)}.classroom-editor .vditor-reset img{max-width:100%}.classroom-editor .vditor-reset table{border-collapse:collapse;max-width:100%}.classroom-editor .vditor-reset td,.classroom-editor .vditor-reset th{border:1px solid var(--line);padding:8px}.lesson-image-insert:not([hidden]){display:flex;flex-wrap:wrap;align-items:flex-end;gap:8px;padding:12px;background:var(--surface-soft);border-radius:8px;margin-top:8px}.lesson-image-insert label{flex:1;min-width:120px}.lesson-image-insert input{width:100%}.lesson-image-insert span{color:#b54438;font-size:12px}.classroom-editor textarea[hidden]{display:none}
@media(max-width:640px){.classroom-editor .vditor-toolbar{padding:6px 3px}.classroom-editor .vditor-toolbar>div{margin-right:3px}.classroom-editor .vditor-reset{font-size:16px}.classroom-editor-fields{padding:16px}.classroom-reader-panel{border:0;border-radius:12px;padding:22px 18px}}
/* Editorial list: typography and separators carry the hierarchy. */
.classroom-grid{display:flex;flex-direction:column;gap:0;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:0 24px;overflow:hidden}.classroom-card{flex-direction:row;align-items:center;gap:22px;border:0;border-radius:0;background:transparent;padding:24px 0;transition:background .15s}.classroom-card+.classroom-card{border-top:1px solid var(--line)}.classroom-card:hover{transform:none;box-shadow:none}.classroom-card:hover h2{color:var(--green)}.classroom-card-content{padding:0;min-width:0}.classroom-card h2{margin:8px 0;font-size:21px;line-height:1.5}.classroom-card p{margin:0 0 16px;line-height:1.7;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}.classroom-card .classroom-meta{font-size:12px;color:var(--green)}.classroom-card-bottom{justify-content:flex-start;gap:18px;font-size:12px}.classroom-card-bottom span:last-child{color:var(--muted)}.classroom-card-bottom .classroom-read-arrow{margin-left:auto;color:var(--green)!important}.classroom-card>img{width:150px;height:110px;flex:none;border-radius:10px;order:1}.classroom-count{font-size:12px}.classroom-controls .filter-list{background:var(--surface-soft);border-radius:10px;padding:4px}.classroom-controls .filter-button[aria-pressed="true"]{background:var(--surface);box-shadow:0 1px 4px #153e3510}
@media(max-width:640px){.classroom-title .page-subtitle{max-width:290px}.classroom-grid{padding:0 18px;border-radius:14px}.classroom-card{padding:20px 0;gap:14px}.classroom-card-content{padding:0}.classroom-card h2{font-size:18px;margin:6px 0 7px}.classroom-card p{font-size:13px;margin-bottom:14px}.classroom-card-bottom{font-size:11px;gap:14px}.classroom-card>img{width:84px;height:84px;border-radius:8px}.classroom-controls{gap:12px;margin:18px 0}.classroom-controls .filter-list{gap:2px}.classroom-controls .filter-button{padding:8px 6px;font-size:12px}}
/* Compact magazine rows, with optional thumbnail and quiet metadata. */
.classroom-grid{background:transparent;border:0;border-radius:0;padding:0;overflow:visible;gap:14px}.classroom-card{padding:20px;background:var(--surface);border:1px solid var(--line);border-radius:14px;gap:22px;align-items:center}.classroom-card+.classroom-card{border:1px solid var(--line)}.classroom-card h2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;margin:0 0 8px;font-size:20px;font-weight:600;line-height:1.5}.classroom-card p{-webkit-line-clamp:1;margin:0 0 16px;font-size:13px}.classroom-card>img{width:144px;height:96px;border-radius:8px;object-fit:cover}.classroom-card-bottom{gap:12px;font-size:11px;line-height:1.5;flex-wrap:wrap}.classroom-list-category{color:var(--muted)!important}.classroom-controls .filter-list{background:none;padding:0;border-radius:0}.classroom-controls .filter-button{border-radius:0;padding:10px 14px;border-bottom:2px solid transparent}.classroom-controls .filter-button[aria-pressed="true"]{box-shadow:none;background:none;border-bottom-color:var(--green)}
@media(max-width:640px){.classroom-grid{gap:10px}.classroom-card{padding:16px;gap:14px;border-radius:12px;align-items:flex-start}.classroom-card h2{font-size:16px;line-height:1.55;margin-bottom:6px;letter-spacing:0}.classroom-card p{font-size:12px;line-height:1.6;margin-bottom:12px}.classroom-card>img{width:88px;height:88px;border-radius:8px}.classroom-card-bottom{font-size:10px;gap:8px;row-gap:4px}.classroom-card-bottom .classroom-list-category{display:none}.classroom-controls .filter-button{flex:1;padding:9px 5px;font-size:12px}.classroom-controls{margin-top:16px}.classroom-title .page-subtitle{font-size:11px;line-height:1.7}.classroom-controls .search-wrap{border-radius:10px}.classroom-controls .search-wrap input{padding:9px 8px}.classroom-count{font-size:11px;margin-bottom:10px}}

.classroom-share{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin:0 0 18px;color:var(--muted);font-size:13px}.classroom-share [data-share-status]{overflow-wrap:anywhere;user-select:text}

.classroom-meta .classroom-share-button{display:inline-flex;align-items:center;justify-content:center;gap:6px;margin-left:auto;padding:4px 0 4px 12px;min-height:36px;border:0;border-radius:4px;background:transparent;box-shadow:none;color:var(--muted);font:inherit;white-space:nowrap;cursor:pointer}.classroom-share-button svg{width:17px;height:17px}.classroom-meta .classroom-share-button:hover{color:var(--green);background:transparent}.classroom-share-button:focus-visible{outline:2px solid var(--green);outline-offset:3px}.classroom-share-status{margin:8px 0 0;font-size:12px;color:var(--green);overflow-wrap:anywhere;user-select:text}.classroom-share-status:empty{display:none}

.classroom-meta{flex-wrap:wrap}.classroom-share-actions{display:inline-flex;align-items:center;gap:14px;margin-left:auto}.classroom-meta .classroom-share-actions .classroom-share-button{margin-left:0;padding:4px 0;min-height:40px}.classroom-poster-dialog{width:min(400px,calc(100% - 32px));padding:20px;max-height:calc(100dvh - 32px);overflow:auto;border:1px solid var(--line);border-radius:18px;background:var(--surface);color:var(--ink)}.classroom-poster-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}.classroom-poster-heading h2{font-size:17px;margin:0}.classroom-poster-heading h2:focus{outline:none}.classroom-poster-close{appearance:none;-webkit-appearance:none;display:grid;place-items:center;width:40px;height:40px;min-width:40px;padding:8px;border:0;border-radius:8px;background:transparent;color:var(--muted);cursor:pointer}.classroom-poster-close svg{width:20px;height:20px}.classroom-poster-close:focus-visible{outline:2px solid var(--green);outline-offset:2px}.classroom-poster-image{display:block;width:100%;max-height:calc(100dvh - 230px);object-fit:contain;border-radius:12px;background:var(--surface-soft)}.classroom-poster-actions{display:flex;gap:10px;margin-top:16px}.classroom-poster-actions button{flex:1;min-height:44px;padding:10px 12px}.classroom-poster-status{margin:12px 0 0;font-size:12px;line-height:1.7;color:var(--muted);overflow-wrap:anywhere}
/* Local classroom image uploads */
.classroom-cover-field{display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:end;gap:10px}
.classroom-cover-field .form-field{margin:0}.classroom-cover-field>button{margin-bottom:0;white-space:nowrap}
.classroom-cover-field [data-cover-preview]{grid-column:1/-1;max-width:100%;width:160px;max-height:120px;object-fit:contain;border:1px solid var(--line);border-radius:10px;background:var(--surface-soft)}
.classroom-cover-field .form-help{grid-column:1/-1;margin:0}
.lesson-image-insert:not([hidden]){display:grid;gap:12px;padding:16px;border:1px solid var(--line);border-radius:12px}
.lesson-image-upload{display:flex;align-items:center;flex-wrap:wrap;gap:12px}.lesson-image-upload label{flex:0 1 auto;display:flex;align-items:center;gap:6px;font-size:14px}.lesson-image-upload input[type=checkbox]{width:auto;margin:0}.lesson-image-upload small{flex-basis:100%;color:var(--muted)}
.lesson-image-link{display:flex;align-items:end;gap:10px}.lesson-image-link label{display:grid;gap:6px;font-size:13px;color:var(--muted)}.lesson-image-link button{white-space:nowrap}
.lesson-image-insert input[hidden]{display:none}
@media(max-width:560px){.classroom-cover-field{grid-template-columns:1fr}.classroom-cover-field>button{justify-self:start}.lesson-image-link{align-items:stretch;flex-direction:column}.lesson-image-link button{align-self:start}}
/* Keep upload actions aligned with the input, independent of admin label margins. */
.admin-body .classroom-cover-field{margin-bottom:20px;column-gap:10px;row-gap:10px}
.admin-body .classroom-cover-field>.form-field{margin-bottom:0}
.admin-body .classroom-cover-field>.secondary-button{height:44px;min-height:44px;margin:0;align-self:end}
.admin-body .classroom-cover-field input[name=cover]{height:44px}
.classroom-login-gate{text-align:center;padding:32px 20px;margin-top:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface-soft)}
.classroom-login-gate strong{display:block;font-size:20px}.classroom-login-gate p{color:var(--muted);margin:12px 0 22px}.classroom-login-gate .primary-button{display:inline-flex}
.classroom-login-dialog{position:fixed;inset:0;margin:auto;width:min(400px,calc(100vw - 32px));max-height:calc(100dvh - 32px);overflow:auto;padding:32px 28px 26px;border:1px solid var(--line);border-radius:22px;background:var(--surface);color:var(--ink);box-shadow:0 20px 80px #0002;text-align:center}
.classroom-login-dialog::backdrop{background:#152c3c66;backdrop-filter:blur(3px)}
.classroom-login-close{position:absolute;right:10px;top:10px;width:44px;height:44px;border:0;background:transparent;color:var(--muted);font-size:25px;cursor:pointer}
.classroom-login-icon{display:grid;place-items:center;width:56px;height:56px;border-radius:18px;margin:8px auto 20px;background:var(--green-soft);color:var(--green)}.classroom-login-icon svg{width:28px;height:28px}
.classroom-login-dialog h2{margin:0 0 12px;font-size:22px}.classroom-login-dialog p{color:var(--muted);font-size:15px;line-height:1.8;margin:0 0 26px}
.classroom-login-actions{display:grid;grid-template-columns:1fr 1fr;gap:12px}.classroom-login-actions button{min-height:44px}
/* Single tool/resource sharing reuses the article share card. */
.item-share-actions{display:flex;align-items:center;flex-wrap:wrap;gap:14px;color:var(--muted,#718078)}
.item-share-actions .classroom-share-button{min-height:40px;color:var(--green,#00836d);font-size:14px}
.item-share-status{flex-basis:100%;font-size:12px;overflow-wrap:anywhere}.item-share-status:empty{display:none}
.tool-entry{min-width:0;display:flex;flex-direction:column;border:1px solid var(--line);border-radius:18px;background:var(--surface)}
.tool-entry .tool-tile{flex:1;border:0;border-radius:18px 18px 0 0}.tool-entry>.item-share-actions{padding:0 22px 12px;gap:18px}
.resource-card-actions{display:flex;align-items:center;gap:10px;flex:none}.resource-card-actions .tool-share-trigger{position:static;flex:none;margin:0}.resource-card-footer>span{min-width:0;line-height:1.6}.resource-card-actions .text-button{white-space:nowrap}
#app-dialog .item-share-actions{margin:16px 0}
.intro>.item-share-actions,.tool-intro>.item-share-actions{margin-top:16px}
@media(max-width:600px){.tool-entry>.item-share-actions{padding:0 14px 10px;gap:12px}.item-share-actions .classroom-share-button{font-size:13px}}
.classroom-poster-dialog{background:var(--surface,#fff);border-color:var(--line,#dce5e1);color:var(--ink,#203831);box-sizing:border-box}
.classroom-poster-dialog::backdrop{background:#152c3c66;backdrop-filter:blur(3px)}
.classroom-poster-actions .primary-button{border:1px solid var(--green,#00836d);border-radius:10px;background:var(--green,#00836d);color:#fff;cursor:pointer}
.classroom-poster-actions .secondary-button{border:1px solid var(--line,#dce5e1);border-radius:10px;background:var(--surface,#fff);color:var(--ink,#203831);cursor:pointer}
/* One quiet share action on the outer tool card. */
.tool-entry{position:relative}.tool-entry .tool-tile{border-radius:18px;padding-bottom:22px}
.tool-share-trigger{position:absolute;right:10px;top:12px;display:grid;place-items:center;width:40px;height:40px;padding:10px;border:0;border-radius:10px;background:transparent;color:var(--muted);cursor:pointer}
.tool-share-trigger svg{width:18px;height:18px}.tool-share-trigger:hover{background:var(--surface-soft);color:var(--green)}.tool-share-trigger:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.item-share-dialog{position:fixed;inset:0;margin:auto;box-sizing:border-box;width:min(360px,calc(100vw - 32px));max-height:calc(100dvh - 32px);overflow:auto;padding:24px 20px 16px;border:1px solid var(--line);border-radius:22px;background:var(--surface);color:var(--ink);box-shadow:0 16px 64px #0002}
.item-share-dialog::backdrop{background:#17242966;backdrop-filter:blur(3px)}.item-share-dialog header{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:20px;padding-left:4px}.item-share-dialog h2{font-size:20px;line-height:1.4;margin:0}.item-share-dialog h2:focus{outline:none}.item-share-dialog header p{font-size:13px;line-height:1.6;color:var(--muted);margin:6px 0 0;overflow-wrap:anywhere}
.item-share-close{appearance:none;-webkit-appearance:none;display:grid;place-items:center;flex:none;width:40px;height:40px;margin:-8px -6px 0 0;padding:10px;border:0;border-radius:50%;background:transparent;color:var(--muted);cursor:pointer}.item-share-close svg{width:20px;height:20px;pointer-events:none}.item-share-close:hover{background:var(--surface-soft);color:var(--ink)}.item-share-close:focus-visible{outline:2px solid var(--green);outline-offset:2px}
.item-share-dialog .item-share-actions{display:grid;gap:0}.item-share-dialog .classroom-share-button{appearance:none;-webkit-appearance:none;display:flex;align-items:center;justify-content:flex-start;gap:12px;width:100%;min-height:80px;padding:14px 4px;border:0;border-radius:10px;background:transparent;color:var(--ink);font:inherit;text-align:left;cursor:pointer;box-shadow:none}.item-share-dialog .classroom-share-button+.classroom-share-button{border-top:1px solid var(--line);border-radius:0 0 10px 10px}.item-share-dialog .classroom-share-button:hover{background:var(--surface-soft)}.item-share-option-icon{display:grid;place-items:center;flex:none;width:44px;height:44px;border-radius:14px;background:var(--green-soft);color:var(--green)}.item-share-option-icon svg{width:22px;height:22px}.item-share-option-text{display:grid;gap:5px;min-width:0}.item-share-option-text strong{font-size:15px;font-weight:600;line-height:1.4}.item-share-option-text small{font-size:12px;line-height:1.5;color:var(--muted)}.item-share-dialog .item-share-chevron{flex:none;width:16px;height:16px;margin-left:auto;color:var(--muted)}.item-share-dialog .item-share-status:not(:empty){margin:8px 4px 4px;color:var(--green)}

.classroom-share-gate{margin-top:24px;padding:24px;border:1px solid var(--green-line);border-radius:16px;background:var(--green-soft);color:var(--ink)}
.classroom-share-label{color:var(--green);font-size:12px;font-weight:500}.classroom-share-gate h2{margin:10px 0 16px;font-size:20px}.classroom-share-gate ol{padding-left:22px;line-height:1.9}.classroom-share-gate li+li{margin-top:10px}.classroom-share-gate-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:18px}.classroom-share-gate-actions a{display:inline-flex;align-items:center;text-decoration:none}.classroom-share-gate .form-help{color:var(--muted)}

/* Shared reader/preview watermark. The mask takes its color from the active site theme. */
.classroom-body{position:relative;isolation:isolate}
.classroom-watermarked:not(:empty)::before{content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;user-select:none;background-color:var(--ink);opacity:.065;-webkit-mask-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22340%22%20height%3D%22150%22%20viewBox%3D%220%200%20340%20150%22%3E%3Cg%20transform%3D%22rotate%28-20%20170%2075%29%22%20fill%3D%22black%22%20text-anchor%3D%22middle%22%20font-family%3D%22sans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22500%22%3E%3Ctext%20x%3D%22170%22%20y%3D%2270%22%3E%E6%9D%A5%E6%BA%90%EF%BC%9A%E5%8D%A1%E6%9C%89%E8%AE%B0%3C%2Ftext%3E%3Ctext%20x%3D%22170%22%20y%3D%2291%22%3Ehttps%3A%2F%2Faika365.com%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fsvg%3E");mask-image:url("data:image/svg+xml,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22340%22%20height%3D%22150%22%20viewBox%3D%220%200%20340%20150%22%3E%3Cg%20transform%3D%22rotate%28-20%20170%2075%29%22%20fill%3D%22black%22%20text-anchor%3D%22middle%22%20font-family%3D%22sans-serif%22%20font-size%3D%2213%22%20font-weight%3D%22500%22%3E%3Ctext%20x%3D%22170%22%20y%3D%2270%22%3E%E6%9D%A5%E6%BA%90%EF%BC%9A%E5%8D%A1%E6%9C%89%E8%AE%B0%3C%2Ftext%3E%3Ctext%20x%3D%22170%22%20y%3D%2291%22%3Ehttps%3A%2F%2Faika365.com%3C%2Ftext%3E%3C%2Fg%3E%3C%2Fsvg%3E");-webkit-mask-size:340px 150px;mask-size:340px 150px;-webkit-mask-repeat:repeat;mask-repeat:repeat}

/* Keep the two unlock actions balanced and separate from the explanatory footer. */
.classroom-share-gate-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:22px 0 0}
.classroom-share-gate-actions>.primary-button,.classroom-share-gate-actions>.secondary-button{display:flex;align-items:center;justify-content:center;box-sizing:border-box;min-width:0;width:100%;min-height:46px;padding:12px 16px;border-radius:12px;font-size:14px;line-height:1.5;text-align:center;white-space:normal}
.classroom-share-gate-actions>.secondary-button{border-color:var(--green-line);background:var(--surface);color:var(--ink)}
.classroom-share-gate-actions+.form-help{margin:20px 0 0;font-size:12px;line-height:1.8}
@media(max-width:420px){.classroom-share-gate-actions{grid-template-columns:minmax(0,1fr);gap:10px}.classroom-share-gate-actions+.form-help{margin-top:18px}}