/* Square: people, concrete attempts and invitations to participate. */
.channel-page[data-channel="广场"] .channel-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:28px 20px;align-items:start}
.channel-page[data-channel="广场"] .channel-intro{padding-bottom:18px}
.channel-page[data-channel="广场"] .channel-tabs{margin-bottom:8px}
.channel-page[data-channel="广场"] .square-tools{margin-bottom:4px}
.channel-page[data-channel="广场"] .channel-section-head{padding:0;margin:0 0 10px;align-items:center}
.square-topic-intro{font-size:13px;line-height:1.7;color:var(--xc-muted);margin:8px 0 12px}
.channel-page[data-channel="广场"] .channel-tabs a{position:relative}
.square-hot{position:absolute;right:0;top:0;padding:2px 4px;border-radius:4px;background:var(--xc-copper);color:#fff;font-size:8px;line-height:1;letter-spacing:.03em;transform:translate(15%,-20%)}
.square-topic-card .square-card-discussion{font-weight:600;color:var(--xc-ink)}
.square-topic-card .square-card-meta{flex-wrap:wrap;gap:8px}.square-topic-card .square-card-discussion{flex-basis:100%;font-size:11px}
.channel-surface .v2-article.square-topic-page{max-width:1120px}
.topic-hero{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:48px;align-items:center;padding:24px 0 30px}
.topic-kicker{font-size:12px;font-weight:600;color:var(--xc-copper-text)}
.topic-hero h1{font-size:clamp(27px,2.7vw,38px);line-height:1.35;letter-spacing:-.03em;margin:16px 0}
.topic-host{font-size:13px;color:var(--xc-muted);margin:0 0 18px}.topic-host a{margin-left:6px;color:var(--xc-ink)}
.topic-lead{font-size:15px;line-height:1.85;color:var(--xc-muted);margin:0 0 22px}
.topic-hero-art{position:relative;aspect-ratio:3/4;overflow:hidden;border-radius:12px}.topic-hero-art .square-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.topic-participate-actions{display:flex;flex-wrap:wrap;gap:10px}.topic-participate-actions .button{min-height:44px;display:inline-flex;align-items:center}
.topic-activity{font-size:12px;color:var(--xc-muted);margin:18px 0 0}.topic-activity span{margin:0 9px}
.topic-section-nav{display:flex;flex-wrap:wrap;gap:26px;padding:14px 0;border-top:1px solid var(--xc-line);border-bottom:1px solid var(--xc-line);font-size:14px}.topic-section-nav a{color:var(--xc-ink);text-decoration:none}.topic-section-nav span{font-size:11px;margin-left:5px;color:var(--xc-muted)}
.topic-how{padding:24px 0 12px}.topic-how h2{font-size:17px;margin:0 0 10px}.topic-how p,.topic-about p{font-size:14px;line-height:1.9;margin:0;color:var(--xc-muted)}
.topic-about{margin:0 0 28px;border-bottom:1px solid var(--xc-line);padding:0 0 14px;scroll-margin-top:100px}.topic-about summary{font-size:13px;cursor:pointer;padding:8px 0;color:var(--xc-muted)}.topic-about[open] summary{margin-bottom:14px}.topic-about h3{font-size:15px}.topic-about .v2-prose{font-size:14px}
.topic-contributions{scroll-margin-top:100px;margin:28px 0}.topic-contributions>header{display:flex;align-items:center;justify-content:space-between;gap:20px;margin:0 0 20px}.topic-contributions h2{font-size:23px;margin:0 0 8px}.topic-contributions h2 span{font-size:14px;font-weight:400;margin-left:6px;color:var(--xc-muted)}.topic-contributions>header p{font-size:13px;line-height:1.7;color:var(--xc-muted);margin:0}
.topic-contribution-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:26px 22px}.topic-empty{padding:32px;border:1px dashed var(--xc-line);border-radius:12px;text-align:center}.topic-empty strong{font-size:17px;font-weight:500}.topic-empty p,.topic-rights,.topic-preview-note{font-size:12px;line-height:1.8;color:var(--xc-muted)}.topic-rights{margin:18px 0 0}
.square-topic-context{padding:15px 18px;border-left:3px solid var(--xc-copper);background:var(--xc-wash);margin:20px 0}.square-topic-context>span{display:block;font-size:11px;color:var(--xc-muted);margin-bottom:5px}.square-topic-context>a{font-size:15px;font-weight:600;color:var(--xc-ink);text-decoration:none}.square-topic-context>p{font-size:12px;line-height:1.7;margin:8px 0 0;color:var(--xc-muted)}
.square-topic-page #discussion{scroll-margin-top:100px;border-top:1px solid var(--xc-line);padding-top:24px}
@media(max-width:650px){.topic-hero{grid-template-columns:minmax(0,1fr) 90px;gap:16px;align-items:start;padding:20px 0}.topic-hero h1{font-size:25px;margin:12px 0}.topic-hero-art{margin-top:34px}.topic-lead{font-size:13px;margin-bottom:16px}.topic-participate-actions .button{font-size:12px;padding:10px 12px}.topic-section-nav{gap:18px;font-size:12px}.topic-contributions>header{align-items:flex-start;flex-direction:column;gap:12px}.topic-contribution-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 12px}.topic-contributions h2{font-size:21px}.topic-empty{padding:24px 16px}.topic-how{padding-top:20px}}
.channel-page[data-channel="广场"] .channel-section-head h2,.channel-page[data-channel="广场"] .channel-section-head p{display:none}
.channel-page[data-channel="广场"] .channel-section-head>span{padding:0}
.square-card{min-width:0;background:#fff}
.square-card-cover{display:block;position:relative;aspect-ratio:3/4;overflow:hidden;border-radius:12px;text-decoration:none;background:var(--xc-wash);isolation:isolate;transition:transform .2s ease}
.square-cover-svg{display:block;width:100%;height:auto;aspect-ratio:3/4}
.square-card-cover>.square-cover-svg,.square-photo{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.square-photo[hidden]{display:none}.square-cover-error{position:absolute;left:10px;top:10px;padding:4px 7px;font-size:10px;background:#ffffffeb;color:#222321;border-radius:5px}
.square-cover-badges{position:absolute;right:10px;bottom:10px;display:flex;gap:5px;font-size:10px;color:#222321}
.square-cover-badges>span{background:#ffffffeb;border-radius:5px;padding:3px 7px}
.square-card-copy{padding:12px 2px 0}
.square-card h3{font-size:15px;font-weight:600;line-height:1.65;margin:0 0 8px;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.square-card h3 a{color:var(--xc-ink);text-decoration:none}
.square-card-meta{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:11px;line-height:1.6;color:var(--xc-muted)}
.square-card-author{display:inline-flex;align-items:center;gap:7px;min-width:0;color:inherit;text-decoration:none}
.square-card-author>span:last-child{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.square-avatar{width:25px;height:25px;border:1px solid var(--xc-line);border-radius:50%;display:grid;place-items:center;background:var(--xc-wash);color:var(--xc-text);font-size:11px;flex:none}
.square-card-discussion{display:inline-flex;gap:4px;align-items:center;white-space:nowrap;color:inherit;text-decoration:none;flex:none}
.square-card-discussion svg{flex:none}.square-card a:hover{color:var(--xc-ink)}
.square-card-extra{display:flex;gap:8px;align-items:center;flex-wrap:wrap;font-size:10px;color:var(--xc-muted);margin-top:8px}.square-card-extra a{color:inherit;text-decoration:none;margin-left:auto}
.square-source{font-size:10px;color:var(--xc-muted);line-height:1.6;margin:7px 0 0;overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.square-detail-cover{width:min(100%,420px);margin:22px auto 28px;border-radius:12px;overflow:hidden;position:relative;aspect-ratio:3/4}
@media(hover:hover){.square-card-cover:hover{transform:translateY(-3px)}.square-card h3 a:hover{text-decoration:underline;text-underline-offset:3px}}
@media(max-width:1100px){.channel-page[data-channel="广场"] .channel-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:24px 16px}}
@media(max-width:760px){.channel-page[data-channel="广场"] .channel-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 12px}.square-card h3{font-size:13px}.square-card-meta{flex-wrap:wrap;gap:5px}.square-card-discussion{min-height:26px}.square-cover-badges{right:6px;bottom:6px;font-size:9px;gap:3px}.square-cover-badges>span{padding:2px 4px}.square-card-cover{border-radius:8px}}
.square-cover-editor{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:50px;padding:26px 0 32px;border-bottom:1px solid var(--xc-line)}
.square-cover-controls{min-width:0}.square-cover-controls h2{font-size:22px;font-weight:600;line-height:1.4;margin:0 0 8px}.square-cover-help{font-size:12px;color:var(--xc-muted);line-height:1.8;margin:0 0 16px}
.square-cover-modes{display:flex;gap:24px;margin:20px 0}.square-cover-modes button{padding:10px 0;background:none;border:0;border-bottom:2px solid transparent;border-radius:0;color:var(--xc-muted);font:inherit;font-size:14px;cursor:pointer}.square-cover-modes button[aria-pressed=true]{color:var(--xc-ink);border-color:var(--xc-copper);font-weight:600}
.square-cover-controls label{font-size:13px}.square-cover-controls label>small{display:inline;margin-left:8px;font-size:11px;color:var(--xc-muted)}
.square-cover-controls textarea{margin-top:9px;resize:vertical;min-height:76px}.square-template-label{font-size:13px;margin:20px 0 12px}
.square-template-grid{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px}
.square-template-grid button{position:relative;display:block;min-width:0;padding:4px;background:#fff;border:2px solid transparent;border-radius:9px;cursor:pointer;color:var(--xc-text)}
.square-template-grid button[aria-pressed=true]{border-color:var(--xc-copper)}.square-template-grid button[aria-pressed=true]:after{content:'✓';position:absolute;right:6px;top:6px;background:var(--xc-copper);color:#fff;width:18px;height:18px;border-radius:50%;font-size:12px;line-height:18px}
.square-template-grid svg{border-radius:5px}.square-template-grid button>span{display:block;font-size:11px;margin:7px 0 2px}
.square-cover-preview{min-width:0;align-self:start;text-align:center}.square-cover-preview>p{font-size:12px;color:var(--xc-muted);margin:0 0 12px}.square-cover-preview>small{display:block;font-size:11px;color:var(--xc-muted);margin-top:12px}
.square-preview-art{position:relative;width:100%;aspect-ratio:3/4;overflow:hidden;border-radius:12px;background:var(--xc-wash)}.square-preview-art>img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}.square-preview-empty{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:20px;border:1px dashed var(--xc-line);border-radius:12px}.square-preview-empty strong{font-size:18px;font-weight:500}.square-preview-empty span{font-size:11px;color:var(--xc-muted)}
.square-upload-label{border:1px dashed var(--xc-field);border-radius:10px;padding:22px;cursor:pointer}.square-upload-label input{margin-top:12px;font-size:12px}
.square-image-list{display:flex;flex-wrap:wrap;gap:12px;margin-top:16px}.square-upload-thumb{position:relative;width:92px}.square-upload-thumb>img{width:92px;height:108px;object-fit:cover;border-radius:6px}.square-upload-thumb button[data-cover-first]{width:100%;border:0;background:var(--xc-wash);padding:5px 0;font-size:11px;cursor:pointer}.square-upload-thumb button[data-cover-remove]{position:absolute;right:4px;top:4px;border:0;width:24px;height:24px;border-radius:50%;background:#fff;color:#222;font-size:18px;cursor:pointer}
.square-cover-status{font-size:12px;line-height:1.7;min-height:1.7em;margin:10px 0 0;color:var(--xc-muted)}.square-cover-status.error{color:#9b3629}
.square-cover-editor [hidden]{display:none!important}
@media(max-width:1100px){.square-cover-editor{grid-template-columns:minmax(0,1fr) 260px;gap:30px}.square-template-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:650px){.square-cover-editor{grid-template-columns:minmax(0,1fr);gap:24px;padding-top:8px}.square-template-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.square-cover-preview{width:min(100%,270px);justify-self:center}.square-cover-controls h2{font-size:20px}}
@media(prefers-reduced-motion:reduce){.square-card-cover{transition:none;transform:none!important}}
.channel-actions.square-compose{display:flex;flex-wrap:wrap;gap:10px}
.square-compose a{display:flex;align-items:center;justify-content:center;gap:8px;min-height:44px;padding:11px 16px;border:1px solid var(--xc-line);border-radius:10px;font-size:13px;color:var(--xc-ink);text-decoration:none;white-space:nowrap}
.square-compose-icon{display:block;width:18px;height:18px;flex:none;pointer-events:none}
.square-compose a:last-child{margin-inline-start:auto}
.square-compose a:hover{border-color:var(--xc-field);background:var(--xc-wash)}
.square-compose span{color:var(--xc-copper)}
body[data-page] .square-compose a.primary{background:var(--xc-ink);border-color:var(--xc-ink);color:#fff}
body[data-page] .square-compose a.primary:hover{background:#343632;border-color:#343632;color:#fff}
.square-order{display:flex;flex-wrap:wrap;gap:8px 22px;margin:0 0 12px}
.square-order a{display:inline-flex;align-items:center;min-height:38px;font-size:12px;color:var(--xc-muted);text-decoration:none;border-bottom:2px solid transparent}
.square-order a[aria-current]{color:var(--xc-ink);border-color:var(--xc-copper);font-weight:600}
.square-tools{margin-bottom:18px}.square-tools .square-order{margin:0}
.channel-page[data-channel="广场"] :is(.square-compose,.channel-tabs,.square-order) a{position:relative;transition:transform .16s ease,background .16s ease,border-color .16s ease,color .16s ease}
.channel-page[data-channel="广场"] :is(.square-compose,.channel-tabs,.square-order) a:active{transform:translateY(1px) scale(.98)}
@media(hover:hover){.square-compose a:hover{transform:translateY(-1px)}}
@media(prefers-reduced-motion:reduce){.channel-page[data-channel="广场"] :is(.square-compose,.channel-tabs,.square-order) a{transition:none;transform:none}}
.square-login-note{display:flex;flex-wrap:wrap;gap:6px 12px;margin:0;font-size:13px;line-height:1.8;color:var(--xc-muted)}
.square-login-note a{color:var(--xc-copper-text);text-underline-offset:3px}
.square-prompt{font-size:12px;line-height:1.8;margin:13px 0 0;color:var(--xc-text)}.square-prompt span{color:var(--xc-copper-text);margin-right:10px}
.square-detail-author{font-size:13px;color:var(--xc-muted)}
.v2-article>.square-detail-actions{display:flex;flex-wrap:wrap;align-items:flex-start;gap:10px;margin:24px 0 32px}
.square-detail-actions>.v2-inline{display:flex;flex-direction:column;align-items:stretch;gap:6px;margin:0}
.square-detail-actions .button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;margin:0;padding:10px 14px;font-size:13px;line-height:22px;border-radius:10px;white-space:nowrap}
.square-detail-actions .form-message:empty{display:none}.square-action-icon{display:block;width:17px;height:17px;flex:none;pointer-events:none}
@media(max-width:600px){.v2-article>.square-detail-actions{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;margin:22px 0 28px}.square-detail-actions>.button,.square-detail-actions>.v2-inline{width:100%;min-width:0}.square-detail-actions>:last-child:nth-child(odd){grid-column:1/-1}.square-detail-actions .button{padding:10px 8px;font-size:12px;gap:6px}}
.square-discussion-prompt{padding:16px 0 16px 18px;border-left:2px solid var(--xc-copper);font-size:14px;line-height:1.8;color:var(--xc-text)}
.square-discussion-prompt strong{display:block;font-size:12px;margin-bottom:5px;color:var(--xc-copper-text);font-weight:500}
.post-editor-guide{font-size:14px;line-height:1.8;color:var(--xc-muted);margin:0 0 16px}
.topic-introduction{padding:24px 0 0;scroll-margin-top:100px;overflow-wrap:anywhere}
.topic-introduction h2{font-size:17px;margin:0 0 12px}
.topic-introduction .v2-prose{font-size:15px;line-height:1.9}
.v2-editor[data-kind="topic"] .topic-cover-note{font-size:13px;color:var(--xc-muted);margin:0 0 -14px;line-height:1.7}
.v2-editor[data-kind="topic"] .v2-fold .square-cover-editor{padding:0;border:0}
.topic-reference{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:10px;align-items:end;margin:0 0 22px}
.topic-reference-selected,.topic-reference [data-reference-results],.topic-reference [data-reference-status]{grid-column:1/-1}
.topic-reference-selected{display:flex;justify-content:space-between;gap:16px;align-items:center;padding:10px 12px;background:var(--xc-wash);font-size:13px;overflow-wrap:anywhere}
.topic-reference-selected .text-button{white-space:nowrap;min-height:44px}
.topic-reference-choice{display:block;width:100%;text-align:left;padding:12px;border:0;border-bottom:1px solid var(--xc-line);background:transparent;color:var(--xc-ink);font:inherit;font-size:13px;cursor:pointer;overflow-wrap:anywhere}
.topic-reference-choice:hover{background:var(--xc-wash)}
.topic-reference-choice:focus-visible{outline:2px solid var(--xc-ink);outline-offset:2px}
.topic-reference [data-reference-status]{margin:0}.topic-reference [data-reference-status]:empty{display:none}
@media(max-width:760px){
 .v2-editor[data-kind="topic"]>.actions{position:sticky;bottom:calc(58px + env(safe-area-inset-bottom));z-index:20;background:#fff;border-top:1px solid var(--xc-line);padding:12px 0;display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:8px}
 .v2-editor[data-kind="topic"]>.actions .button{min-width:0!important;padding:11px 8px;font-size:12px}
 .v2-editor[data-kind="topic"] .square-editor-layout>.square-cover-preview{width:min(100%,200px)}
 .v2-editor[data-kind="topic"]{scroll-padding-bottom:150px}
 .v2-editor[data-kind="topic"] :is(input,textarea,select){scroll-margin-bottom:160px}
}
.button.post-editor-back{display:inline-flex;align-items:center;gap:8px;min-height:44px;margin:24px 0 0}
.post-editor-back+.v2-head{margin-top:0;padding-top:24px}
.v2-editor:is([data-kind="post"],[data-kind="topic"]){max-width:1040px;margin-inline:auto;gap:20px}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .fn-editor-section{gap:16px;margin:0}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .fn-editor-section legend{margin-bottom:20px}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) label{margin:0}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .post-editor-guide{font-size:13px;margin:-8px 0 0}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .v2-fold{margin:0;padding:0;border:0;border-top:1px solid var(--xc-line);border-radius:0;background:transparent}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .v2-fold>summary{min-height:48px;padding:12px 0;font-size:14px;line-height:1.6;list-style-position:inside}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .v2-fold[open]>summary{margin-bottom:16px}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .v2-fold>label{margin:0 0 16px}
.v2-editor:is([data-kind="post"],[data-kind="topic"])>.actions{margin-top:8px}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) [hidden]{display:none!important}
.square-editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 280px;gap:40px;align-items:start}
.square-editor-fields{display:grid;gap:22px;min-width:0}
.square-editor-layout>.square-cover-preview{position:sticky;top:110px}
.square-preview-title{font-size:15px!important;line-height:1.65;text-align:left;margin:12px 0 0!important;overflow-wrap:anywhere;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.square-post-types{display:flex;gap:10px;flex-wrap:wrap}
.square-post-types button{flex:1;min-width:64px;min-height:44px;padding:10px 16px;border:1px solid var(--xc-line);border-radius:9px;background:#fff;color:var(--xc-ink);font:inherit;font-size:14px;cursor:pointer}
.square-post-types button:hover{background:var(--xc-wash)}
.square-post-types button[aria-pressed="true"]{background:var(--xc-ink);border-color:var(--xc-ink);color:#fff}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .square-cover-editor{display:block;padding:22px 0 0;border-top:1px solid var(--xc-line);border-bottom:0}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .square-cover-controls h2{font-size:20px}
.v2-editor:is([data-kind="post"],[data-kind="topic"]) .square-template-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.square-cover-caption{margin:0 0 16px}
.square-cover-caption summary{font-size:13px;color:var(--xc-muted);cursor:pointer;padding:8px 0}
.square-cover-caption[open] summary{margin-bottom:8px}
.square-cover-caption textarea{font-size:14px}
.v2-editor:is([data-kind="post"],[data-kind="topic"])>.form-message:empty{display:none}
.v2-editor:is([data-kind="post"],[data-kind="topic"])>.actions{justify-content:flex-end;gap:12px}
.v2-editor:is([data-kind="post"],[data-kind="topic"])>.actions .button.primary{min-width:112px;margin-left:8px}
@media(max-width:760px){
 .square-editor-layout{grid-template-columns:minmax(0,1fr);gap:24px}
 .square-editor-layout>.square-cover-preview{position:static;width:min(100%,280px);justify-self:center}
 .square-editor-fields{gap:20px}.square-post-types{gap:6px}
 .square-post-types button{min-width:0;font-size:13px;padding:10px 6px}
 .v2-editor:is([data-kind="post"],[data-kind="topic"])>.actions .button.primary{margin-left:0}
}
@media(max-width:600px){
 .channel-actions.square-compose{gap:6px}.channel-actions.square-compose a{flex:1 1 calc(50% - 6px);font-size:12px;padding:11px 12px;min-height:44px}.channel-actions.square-compose a:last-child{flex:0 0 auto;padding:11px 16px}
 .square-order{gap:6px 13px}.square-order a{font-size:12px;min-height:44px}.square-tools{margin-bottom:17px}
 .square-discussion-prompt{font-size:13px}.post-editor-guide{font-size:13px}
}