/* 案卷页与案卷广场
 *
 * 这个文件**不定义任何 :root 变量** —— 全部用 community.css 里的那一套。
 * 早期这里有过两套变量（--ink/--paper 一套、--text/--card 另一套），
 * 名字还撞车（--muted、--line 两边都有、值不一样），同时加载就会互相覆盖，
 * 页面颜色随加载顺序变。所以：一个站点只有一套变量。
 */

/* ============================================================
 * 案卷广场
 * ============================================================ */

.board-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 13px;
}

.case-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--r);
  padding: 17px 19px; display: flex; flex-direction: column; gap: 9px;
  transition: border-color .15s, transform .15s, box-shadow .15s;
}
.case-card:hover { border-color: var(--brand); transform: translateY(-2px); box-shadow: var(--shadow); }
.case-card h3 { font-size: 17px; line-height: 1.35; }
.case-card .cc-tagline { font-size: 13.5px; color: var(--muted); }
.case-card .cc-pain {
  font-size: 13.5px; color: var(--text-2); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}
.case-card .cc-foot {
  display: flex; align-items: center; gap: 10px; margin-top: auto;
  padding-top: 10px; border-top: 1px solid var(--line-2); font-size: 12.5px; color: var(--muted-2);
}

.case-flags { display: flex; gap: 6px; flex-wrap: wrap; }
.flag {
  font-size: 11.5px; padding: 2px 8px; border-radius: 999px; font-weight: 600;
  background: var(--line-2); color: var(--muted);
}
.flag.patent { background: #fff4e5; color: var(--warn); }
.flag.demo { background: var(--line-2); color: var(--muted-2); }
.flag.invent { background: var(--brand-soft); color: var(--brand); }

/* 关卡进度条（卡片上用的小号） */
.stage-mini { display: flex; align-items: center; gap: 9px; }
.stage-mini .sm-track {
  flex: 1 1 auto; height: 5px; background: var(--line-2);
  border-radius: 999px; overflow: hidden;
}
.stage-mini .sm-track > i { display: block; height: 100%; background: var(--brand); border-radius: 999px; }
.stage-mini .sm-num { font-size: 12px; color: var(--muted-2); white-space: nowrap;
  font-variant-numeric: tabular-nums; }

/* ============================================================
 * 案卷详情
 * ============================================================ */

.case-hero {
  display: grid; grid-template-columns: 1fr 340px; gap: 16px; align-items: start;
}
@media (max-width: 900px) { .case-hero { grid-template-columns: 1fr; } }

.case-head h1 { font-size: 26px; line-height: 1.3; margin: 10px 0 7px; letter-spacing: -.4px; }
.case-head .ch-tagline { font-size: 16px; color: var(--brand); font-weight: 600; }
.case-head .ch-pain { font-size: 14.8px; color: var(--text-2); line-height: 1.8; margin-top: 12px; }
.case-head .ch-meta { font-size: 12.5px; color: var(--muted-2); margin-top: 11px; }

.stage-card { position: sticky; top: calc(var(--tb-h) + 14px); }
.stage-big { display: flex; align-items: baseline; gap: 8px; margin: 6px 0 4px; }
.stage-big b { font-size: 30px; font-weight: 800; letter-spacing: -.8px;
  font-variant-numeric: tabular-nums; }
.stage-big span { font-size: 13px; color: var(--muted-2); }
.stage-bar { height: 8px; background: var(--line-2); border-radius: 999px; overflow: hidden; margin: 9px 0 8px; }
.stage-bar > i { display: block; height: 100%; background: linear-gradient(90deg, var(--brand), var(--violet));
  border-radius: 999px; transition: width .3s; }

.roadmap { list-style: none; margin: 14px 0 0; padding: 0; }
.roadmap li {
  display: flex; gap: 11px; padding: 10px 0; border-bottom: 1px solid var(--line-2);
  align-items: flex-start;
}
.roadmap li:last-child { border-bottom: 0; }
.roadmap li .rm-mark {
  flex: 0 0 auto; width: 22px; height: 22px; border-radius: 50%;
  display: grid; place-items: center; font-size: 11px; font-weight: 700;
  background: var(--line-2); color: var(--muted-2); margin-top: 1px;
}
.roadmap li.done .rm-mark { background: var(--ok); color: #fff; }
.roadmap li.active .rm-mark { background: var(--brand); color: #fff; }
.roadmap li .rm-body { flex: 1 1 auto; min-width: 0; }
.roadmap li strong { font-size: 13.8px; display: block; }
.roadmap li small { font-size: 12px; color: var(--muted-2); display: block; margin-top: 2px; line-height: 1.5; }
.roadmap li.locked strong, .roadmap li.locked small { color: var(--muted-2); }
.roadmap li .rm-side { font-size: 11.5px; color: var(--muted-2); white-space: nowrap; }

.case-cols { display: grid; grid-template-columns: 1fr 320px; gap: 16px; align-items: start; }
@media (max-width: 900px) { .case-cols { grid-template-columns: 1fr; } }

.case-section { margin-bottom: 13px; }
.case-section h2 { font-size: 16.5px; margin-bottom: 9px; display: flex; align-items: center; gap: 8px; }
.case-section p { font-size: 14.5px; color: var(--text-2); line-height: 1.85; }
.case-section .sec-hint { font-size: 12.5px; color: var(--muted-2); margin-bottom: 11px; }

.timeline { list-style: none; margin: 0; padding: 0; }
.timeline li { display: flex; gap: 12px; padding: 9px 0; }
.timeline .tl-when {
  flex: 0 0 74px; font-size: 12.5px; color: var(--brand); font-weight: 700; padding-top: 1px;
}
.timeline .tl-what { font-size: 14px; color: var(--text-2); line-height: 1.7; }

.thread { display: flex; gap: 11px; padding: 12px 0; border-bottom: 1px solid var(--line-2); }
.thread:last-child { border-bottom: 0; }
.thread .th-body { flex: 1 1 auto; min-width: 0; }
.thread .th-head { display: flex; align-items: center; gap: 7px; font-size: 13.5px; }
.thread .th-role { font-size: 11.5px; color: var(--muted-2); }
.thread .th-text { font-size: 14px; color: var(--text-2); line-height: 1.7; margin-top: 3px; }
.thread .th-like { font-size: 12px; color: var(--muted-2); margin-top: 5px; }

.people-row { display: flex; flex-wrap: wrap; gap: 8px; }
.people-row .pp {
  display: flex; align-items: center; gap: 7px; padding: 5px 11px 5px 5px;
  border: 1px solid var(--line); border-radius: 999px; font-size: 13px;
}

.tag-row { display: flex; flex-wrap: wrap; gap: 7px; }
.rule-list { margin: 0; padding-left: 17px; font-size: 13.5px; color: var(--text-2); line-height: 1.9; }

.patent-note {
  border-left: 3px solid var(--warn); background: #fffaf0;
  border-radius: 0 var(--r-sm) var(--r-sm) 0; padding: 12px 15px;
  font-size: 13.3px; color: var(--text-2); line-height: 1.75; margin-top: 12px;
}