.commission-brief {display:flex;flex-direction:column;gap:18px;padding:24px 0 12px;width:min(880px,100%);margin-inline:auto;min-width:0;color:rgba(0,0,0,.9);font:15px/1.65 -apple-system,BlinkMacSystemFont,'PingFang SC','Microsoft YaHei',sans-serif;}
.commission-brief *,.commission-brief-grid * {box-sizing:border-box;}
.commission-brief h1,.commission-brief-grid h2,.commission-brief-grid h3,.commission-brief-grid p {margin:0;}
.commission-brief-heading {display:flex;align-items:center;justify-content:space-between;gap:20px;}
.commission-brief-heading h1 {font-size:25px;line-height:1.4;font-weight:600;margin-top:4px;}
.commission-breadcrumb {font-size:12px;color:rgba(0,0,0,.55);}
.commission-breadcrumb>button {color:inherit;background:none;border:0;min-height:28px;padding:0;font:inherit;}
.commission-brief-grid {display:grid;grid-template-columns:minmax(0,1.15fr) minmax(300px,.85fr);gap:20px;min-height:0;min-width:0;}
.commission-brief-grid.is-solo {grid-template-columns:1fr;}
.commission-tips {display:inline-flex;align-items:center;gap:8px;flex:none;min-height:38px;padding:7px 15px;border:1px solid #E7DFC6;border-radius:999px;background:#FBF7EA;color:#7A6A3A;font-size:13px;line-height:1.4;cursor:pointer;}
.commission-tips .commission-bulb {width:17px;height:17px;color:#B98A1E;}
.commission-tips:hover {border-color:#D8C795;background:#F8F1DE;}
.commission-tips-dialog {width:min(620px,calc(100% - 32px));}
.commission-tips-body {display:flex;flex-direction:column;gap:15px;}
.commission-tips-body>h3 {font-size:14px;font-weight:500;margin:0;}
.commission-tips-body>ol {display:flex;flex-direction:column;gap:12px;margin:0;padding:0;list-style:none;}
.commission-tips-body li {display:flex;align-items:flex-start;gap:12px;}
.commission-tips-body li>span {flex:0 0 24px;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;font-size:12px;color:var(--ink);background:var(--soft-green);}
.commission-tips-body li>p {margin:0;font-size:15px;line-height:1.7;}
.commission-learning.is-static {padding:13px 16px;}
.commission-learning.is-static h2 {padding:0;margin-top:4px;font-size:17px;}
.commission-story,.commission-instructions {display:flex;flex-direction:column;min-width:0;gap:17px;padding:28px;border:1px solid #DBE1D8;border-radius:14px;background:#FFFFFF;}
.commission-story {justify-content:center;}
.commission-story:has(>.commission-begin) {justify-content:flex-start;}
.commission-overline {font-size:12px;line-height:1.5;color:rgba(0,0,0,.55);}
.commission-story>h2,.commission-learning h2 {font-size:22px;line-height:1.5;font-weight:500;}
.commission-role {font-size:13px;line-height:1.6;color:#32654B;}
.commission-situation {font-size:17px;line-height:1.85;max-width:42em;}
.commission-goal {padding:16px 0 0;border-top:1px solid #E5E8E3;}
.commission-goal>h3,.commission-instructions>h3 {font-size:14px;font-weight:500;line-height:1.5;margin-bottom:6px;}
.commission-goal>p {font-size:15px;line-height:1.7;}
.commission-origin {font-size:12px!important;color:rgba(0,0,0,.45);line-height:1.6;}
.commission-learning {margin:0;border:1px solid #E7DFC6;border-radius:12px;background:#FBF7EA;}
.commission-learning>summary {display:flex;align-items:center;gap:9px;min-height:44px;padding:10px 14px;cursor:pointer;list-style:none;font-size:13px;color:#7A6A3A;border-radius:12px;}
.commission-learning>summary::-webkit-details-marker {display:none;}
.commission-learning .commission-bulb {width:19px;height:19px;flex:none;color:#B98A1E;}
.commission-learning-label {font-weight:500;}
.commission-learning-hint {margin-left:auto;font-size:12px;color:rgba(0,0,0,.45);}
.commission-learning[open] .commission-learning-hint {display:none;}
.commission-learning h2 {font-size:17px;line-height:1.6;padding:2px 16px 14px 42px;}
.commission-instructions>h3 {margin-top:7px;margin-bottom:-9px;}
.commission-instructions>ol {display:flex;flex-direction:column;gap:15px;margin:0;padding:0;list-style:none;}
.commission-instructions li {display:flex;align-items:flex-start;gap:12px;min-width:0;}
.commission-instructions li>span {flex:0 0 24px;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;font-size:12px;color:#157F43;background:#EAF6ED;}
.commission-instructions li>p {font-size:15px;line-height:1.7;}
.commission-begin {display:flex;flex-direction:column;align-items:flex-start;gap:8px;margin-top:auto;padding-top:12px;}
.commission-begin>.btn {width:auto;min-width:232px;min-height:44px;padding:10px 24px;white-space:normal;line-height:1.5;font-size:15px;background:var(--ink);color:var(--surface);border:0;}
.commission-begin>small {font-size:12px;color:rgba(0,0,0,.55);text-align:left;}
.commission-brief>footer {display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:12px;color:#6C7C68;}
.commission-brief>footer button {font-size:12px;}
.commission-help {font-size:12px;white-space:nowrap;}
.practice-help {display:flex;align-items:center;gap:12px;flex-shrink:0;}
.practice-learning {font-size:13px!important;color:#3B6248!important;line-height:1.5!important;}
.practice-learning>span {color:#778374;margin-right:9px;font-size:11px;}
.commission-brief-dialog {width:min(1020px,calc(100% - 32px));}
.commission-brief-dialog .commission-brief-grid {gap:16px;}
.commission-brief-dialog .commission-story,.commission-brief-dialog .commission-instructions {padding:20px;}
.commission-brief-dialog .commission-situation {font-size:15px;}
.commission-brief-dialog h2 {font-size:20px;}
.commission-brief-dialog .commission-origin {margin-top:auto;}
.commission-brief button:focus-visible,.commission-help:focus-visible,.commission-learning>summary:focus-visible {outline:3px solid var(--ink);outline-offset:3px;}
@media(min-width:961px) and (min-height:620px) {
 .work-shell .commission-brief {display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:12px;min-height:0;padding:12px 0 6px;}
 .commission-story,.commission-instructions {min-height:0;}
 .practice-heading .practice-learning {grid-column:1/-1;}
}
@media(min-width:961px) and (min-height:620px) and (max-height:760px) {
 .commission-brief-heading h1 {font-size:21px;}
 .commission-story,.commission-instructions {padding:20px;gap:13px;}
 .commission-story>h2 {font-size:20px;}
 .commission-situation {font-size:15px;line-height:1.8;}
 .commission-learning h2 {font-size:17px;}
 .commission-goal {padding-top:12px;}
 .commission-goal>p,.commission-instructions li>p {font-size:14px;line-height:1.65;}
 .commission-instructions>ol {gap:12px;}
 .commission-begin {padding-top:8px;gap:6px;}
 .commission-begin>.btn {font-size:15px;}
}
@media(max-width:960px),(max-height:619px) {
 .commission-brief-grid {grid-template-columns:1fr;}
 .commission-story,.commission-instructions {padding:22px;}
 .commission-situation {font-size:16px;line-height:1.85;}
 .commission-brief-heading {align-items:flex-start;}
 .commission-brief-heading>.text-button {flex:none;font-size:12px;}
 .commission-brief-heading h1 {font-size:23px;}
 .commission-brief-dialog .commission-brief-grid {grid-template-columns:1fr;}
 .practice-help {flex-direction:column;align-items:flex-end;gap:0;}
 .commission-help {min-height:40px;}
}
@media(max-width:600px) {
 .commission-story,.commission-instructions {padding:19px;}
 .commission-story>h2 {font-size:20px;}
 .commission-brief-heading {flex-direction:column;gap:4px;}
 .commission-brief-heading>.text-button {align-self:flex-end;min-height:30px;}
 .commission-brief-heading>.commission-tips {align-self:flex-end;min-height:34px;}
 .commission-situation {font-size:16px;}
}

/* Reading guidance belongs to the repair shop, not to the simulated phone. */
.commission-story,.commission-instructions { border-color: var(--line); border-radius: var(--radius-panel); background: var(--surface); }
.commission-overline,.commission-breadcrumb,.commission-begin>small,.commission-brief>footer { color: var(--muted); }
.commission-origin { color: var(--muted); }
.commission-begin>.btn { border-radius: var(--radius-control); }
.commission-begin>.btn:hover:not(:disabled) { background: #214f40; }
.commission-instructions li>span { color: var(--ink); background: var(--soft-green); }
.commission-breadcrumb,.commission-overline,.commission-begin>small { font-size: 13px; }
.commission-brief-heading h1 { color: var(--ink); }
.commission-story>h2 { line-height: 1.5; }

/* Step bar: named stages shared by the background page and the play page. */
.flow-steps {display:flex;align-items:center;gap:10px;margin:0;padding:0;list-style:none;}
.flow-steps>li:not(.flow-step-join) {display:flex;align-items:center;gap:8px;font-size:13px;color:var(--muted);}
.flow-step-index {flex:0 0 24px;display:grid;place-items:center;width:24px;height:24px;border-radius:50%;font-size:12px;background:#ECEFE9;color:var(--muted);}
.flow-steps .is-current {color:var(--ink);font-weight:500;}
.flow-steps .is-current .flow-step-index {background:var(--ink);color:var(--surface);}
.flow-steps .is-done .flow-step-index {background:var(--soft-green);color:var(--ink);}
.flow-step-join {flex:0 0 34px;height:1px;background:var(--line);}

/* Background page: the page under discussion, shown next to the story. */
.commission-brief-grid.has-scene {grid-template-columns:minmax(0,1.05fr) minmax(300px,.95fr);align-items:stretch;}
.commission-scene {display:flex;flex-direction:column;gap:8px;min-width:0;min-height:0;padding:18px;border:1px solid var(--line);border-radius:var(--radius-panel);background:var(--surface);}
.commission-scene .phone-preview {min-height:430px;}
.commission-scene .phone-preview-expand {display:none;}
.commission-scene-caption {margin:0;font-size:12px;line-height:1.6;color:var(--muted);}

/* The group-chat illustration inside the phone canvas. */
.phone-preview-screen>.scene-chat {width:390px;height:844px;margin:0;display:flex;flex-direction:column;background:#EDEDED;}
.scene-appbar {justify-content:space-between;flex:none;}
.scene-appbar strong {font-size:17px;font-weight:500;color:rgba(0,0,0,.9);}
.scene-appbar>span {font-size:20px;color:rgba(0,0,0,.75);}
.scene-messages {flex:1;display:flex;flex-direction:column;gap:14px;padding:16px 14px;min-height:0;}
.scene-msg {display:flex;align-items:flex-start;gap:8px;max-width:88%;}
.scene-msg>img {width:36px;height:36px;flex:0 0 36px;border-radius:4px;object-fit:cover;}
.scene-msg>p {margin:0;background:#FFFFFF;border-radius:6px;padding:9px 11px;font-size:15px;line-height:1.55;color:rgba(0,0,0,.9);}
.scene-msg-voice {position:relative;}
.scene-voice {position:relative;display:flex;align-items:center;gap:8px;}
.scene-voice-tag {position:absolute;top:-26px;left:64px;padding:3px 8px;border-radius:6px;background:rgba(0,0,0,.78);color:#FFF;font-size:12px;line-height:1.4;}
.scene-voice-tag::after {content:'';position:absolute;left:14px;bottom:-4px;border:5px solid transparent;border-top-color:rgba(0,0,0,.78);border-bottom:0;}
.scene-voice-bubble {display:flex;align-items:center;gap:8px;width:210px;padding:10px 12px;background:#FFFFFF;border-radius:6px;}
.scene-voice-icon {width:16px;height:16px;flex:none;}
.scene-voice-len {font-size:15px;color:rgba(0,0,0,.9);flex:none;}
.scene-voice-wave {flex:1;display:flex;align-items:center;gap:3px;height:30px;}
.scene-voice-wave i {width:3px;border-radius:2px;background:#C9C9C9;}
.scene-voice-wave i.is-played {background:#576B95;}
.scene-voice-dot {width:8px;height:8px;flex:none;border-radius:50%;background:#FA5151;}
.scene-inputbar {flex:none;display:flex;align-items:center;gap:14px;padding:10px 14px;background:#F7F7F7;border-top:1px solid #E2E2E2;}
.scene-inputbar img {width:26px;height:26px;flex:none;}
.scene-input {flex:1;height:34px;border-radius:6px;background:#FFFFFF;}

@media(max-width:960px),(max-height:619px) {
 .commission-brief-grid.has-scene {grid-template-columns:1fr;}
 .commission-scene .phone-preview {min-height:0;}
}

/* With a step bar inserted, the full-height shells gain a third row. */
@media(min-width:961px) and (min-height:620px) {
 .work-shell .commission-brief:has(.flow-steps) {grid-template-rows:auto auto minmax(0,1fr);}
 .work-shell .practice-workspace:has(.flow-steps) {grid-template-rows:auto auto minmax(0,1fr);}
 .work-shell .commission-scene {min-height:0;}
}