:root{
  --bg:#f4f5f7; --card:#fff; --line:#e6e8eb; --text:#1f2329; --muted:#8a9099;
  --brand:#2b6cb0; --brand-d:#235a94; --ok:#15803d; --err:#dc2626; --danger:#dc2626;
  --radius:12px;
}
*{box-sizing:border-box}
body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;font-size:15px}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}

/* 居中卡片（登录/初始化）*/
.center{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 24px;width:100%;max-width:360px;box-shadow:0 4px 20px rgba(0,0,0,.05)}
.card h1{margin:0 0 18px;font-size:20px;text-align:center}
.card label{display:block;margin-bottom:14px;font-size:13px;color:var(--muted)}
.card input{display:block;width:100%;margin-top:5px;padding:11px 12px;border:1px solid var(--line);
  border-radius:8px;font-size:15px}

/* 顶栏 */
.nav{background:var(--card);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.nav-in{max-width:720px;margin:0 auto;display:flex;align-items:center;gap:14px;padding:12px 16px}
.brand{font-weight:700;font-size:17px}
.spacer{flex:1}
.me{font-size:13px;color:var(--muted)}
.navlink{font-size:14px}
.ai-coin-badge{font-size:13px;color:var(--muted);white-space:nowrap}
.ai-coin-badge.low{color:#dc2626;font-weight:700}
.ai-coin-recharge-btn{background:#dc2626;color:#fff;border:0;animation:aiCoinPulse 1.6s ease-in-out infinite}
@keyframes aiCoinPulse{0%,100%{box-shadow:0 0 0 0 rgba(220,38,38,.55)}50%{box-shadow:0 0 0 6px rgba(220,38,38,0)}}

.wrap{max-width:720px;margin:0 auto;padding:16px}

/* 发布框 */
.composer{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:16px}
.composer textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:10px;font-size:15px;resize:vertical;font-family:inherit}
.composer-row{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.composer-row input{flex:1;min-width:120px;padding:9px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.readonly-tip{color:var(--muted);font-size:13px;background:var(--card);border:1px solid var(--line);
  border-radius:var(--radius);padding:10px 14px;margin-bottom:16px}

/* 按钮 */
.btn{background:var(--brand);color:#fff;border:0;border-radius:8px;padding:10px 18px;font-size:15px;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--brand-d)}
.btn.sm{padding:6px 12px;font-size:13px}
.btn.danger{background:var(--danger)}

/* 消息流 */
.feed{display:flex;flex-direction:column;gap:12px}
.msg{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 16px}
.msg-head{display:flex;align-items:center;gap:8px;margin-bottom:6px}
.tag{background:#eef3fb;color:var(--brand);font-size:12px;padding:2px 8px;border-radius:20px}
.tag.ai{background:#f3e8ff;color:#7c3aed}
.time{font-size:12px;color:var(--muted)}
.del{margin-left:auto}
.del-btn{border:0;background:none;color:var(--muted);cursor:pointer;font-size:14px;padding:2px 6px}
.del-btn:hover{color:var(--danger)}
.msg-body{white-space:normal;word-break:break-word}
.imgs{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}

/* ---- AI 板块分析：右键/长按菜单 + 结果卡片 ---- */
.ai-ctxmenu{position:fixed;z-index:200;background:var(--card);border:1px solid var(--line);border-radius:8px;
  box-shadow:0 4px 16px rgba(0,0,0,.15);padding:4px;min-width:150px}
.ai-ctxmenu-item{padding:8px 12px;font-size:14px;color:var(--text);cursor:pointer;border-radius:6px;white-space:nowrap}
.ai-ctxmenu-item:hover{background:#f3e8ff;color:#7c3aed}
.ai-sector-box{margin-top:8px;padding:8px 10px;background:#f9f5ff;border:1px solid #e4d9fb;border-radius:8px;font-size:13px}
.ai-sector-box .ai-loading{color:var(--muted)}
.ai-sector-box .ai-error{color:var(--danger)}
.ai-mentions{padding-bottom:4px}
.ai-mentions-label{font-size:11px;color:var(--muted);margin-bottom:3px}
.ai-mention-chip{display:inline-flex;align-items:center;background:#fff;border:1px solid #e4d9fb;border-radius:20px;
  padding:2px 8px;font-size:12px;font-weight:600;color:var(--text);margin:0 6px 4px 0}
.ai-sector-item{padding:4px 0;border-top:1px dashed #e4d9fb}
.ai-sector-item:first-child{border-top:0}
.ai-sector-name{font-weight:600;color:#7c3aed}
.ai-dir{font-size:12px;padding:1px 6px;border-radius:10px;margin-left:4px}
.ai-dir.up{background:#fdecec;color:#dc2626}
.ai-dir.down{background:#e7f6ec;color:#15803d}
.ai-sector-reason{color:var(--text);margin-left:2px}
.ai-sector-leaders{color:var(--muted);font-size:12px;margin-left:2px}
.ai-footer{margin-top:6px;padding-top:6px;border-top:1px dashed #e4d9fb;font-size:12px;color:var(--muted)}
.ai-footer b{color:#7c3aed}
.ai-low{color:var(--err)}
.ai-footer .btn.sm{margin-left:6px}

/* ---- AI充值弹窗 ---- */
.ai-modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.45);z-index:300;display:flex;align-items:center;justify-content:center;padding:16px}
.ai-modal{background:var(--card);border-radius:var(--radius);width:100%;max-width:360px;max-height:90vh;overflow:auto}
.ai-modal-head{display:flex;justify-content:space-between;align-items:center;padding:14px 16px;border-bottom:1px solid var(--line);font-weight:600}
.ai-modal-close{border:0;background:none;font-size:16px;color:var(--muted);cursor:pointer;padding:2px 6px}
.ai-modal-body{padding:16px;display:flex;flex-direction:column;gap:10px}
.ai-pack-btn{border:1px solid var(--line);background:#fff;border-radius:10px;padding:12px 14px;text-align:left;cursor:pointer;display:flex;justify-content:space-between;align-items:center}
.ai-pack-btn:hover{border-color:#7c3aed;background:#f9f5ff}
.ai-pack-label{font-size:14px}
.ai-pack-price{font-weight:700;color:#7c3aed}
.ai-qr-wrap{text-align:center}
.ai-qr-img{max-width:220px;max-height:220px;border-radius:8px;border:1px solid var(--line);margin:0 auto 10px;display:block}
.ai-qr-info{font-size:13px;margin:4px 0}
.ai-order-no{font-family:monospace;font-weight:700;color:#7c3aed}
.ai-paid-btn{margin-top:10px;width:100%}
.ai-paid-tip{margin-top:10px;color:var(--ok);font-size:13px}
.imgs img{max-width:160px;max-height:160px;border-radius:8px;border:1px solid var(--line);object-fit:cover}

/* 管理后台 */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;margin-bottom:16px}
.panel h2{margin:0 0 12px;font-size:16px}
.grid-form{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.grid-form input,.grid-form select{padding:9px 10px;border:1px solid var(--line);border-radius:8px;font-size:14px}
.table-scroll{overflow-x:auto}
.utable{width:100%;border-collapse:collapse;font-size:14px}
.utable th,.utable td{text-align:left;padding:10px 8px;border-bottom:1px solid var(--line);vertical-align:top}
.utable th{color:var(--muted);font-weight:600;font-size:13px}
.disabled-row{opacity:.55}
.focus-flash{animation:focusFlash 2s ease-out}
@keyframes focusFlash{0%{background:#fff3cd}100%{background:transparent}}
.badge{font-size:11px;padding:1px 7px;border-radius:10px;margin-left:4px}
.ok-b{background:#e7f6ec;color:var(--ok)}
.off-b{background:#fde8e8;color:var(--err)}
.danger-b{background:#eee;color:var(--muted)}
/* 涨跌幅专用：按国内股市习惯"红涨绿跌"，跟上面 ok-b(绿)/off-b(红) 的语义正好相反，不要混用 */
.pct-up{background:#fde8e8;color:var(--err)}
.pct-down{background:#e7f6ec;color:var(--ok)}
.ops details summary{cursor:pointer;color:var(--brand);font-size:13px;list-style:none}
.ops-menu{display:flex;flex-direction:column;gap:6px;margin-top:8px;background:#fafbfc;padding:10px;border-radius:8px;border:1px solid var(--line);min-width:200px}
.ops-form{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.ops-form.inline{display:inline-flex}
.ops-form input,.ops-form select{padding:6px 8px;border:1px solid var(--line);border-radius:6px;font-size:13px}
.ops-block{background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px;display:flex;flex-direction:column;gap:6px}
.ops-block-title{font-weight:600;font-size:13px;color:var(--text)}

.muted{color:var(--muted)}
.center-text{text-align:center}
.err{color:var(--err);background:#fde8e8;border-radius:8px;padding:9px 12px;font-size:14px;margin:0 0 14px}
.ok{color:var(--ok);background:#e7f6ec;border-radius:8px;padding:9px 12px;font-size:14px;margin:0 0 14px}

/* 频道切换标签 */
.chtabs{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.chtab{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:6px 14px;font-size:14px;color:var(--text)}
.chtab.on{background:var(--brand);color:#fff;border-color:var(--brand)}
.chtab .cnt{opacity:.6;font-size:12px;margin-left:2px}
.chtab-ai{background:#f5f0ff;border-color:#e4d9fb;color:#7c3aed}
.chtab-ai.on{background:#7c3aed;color:#fff;border-color:#7c3aed}
/* 子频道（专题/日报）标签栏：跟父频道标签栏区分开，用紫色调 + 略小尺寸，一眼能看出是"下一级" */
.chtabs.sub{margin:-6px 0 14px;gap:6px}
.chtabs.sub .chtab{background:#f5f0ff;border-color:#e4d9fb;color:#7c3aed;font-size:13px;padding:5px 12px}
.chtabs.sub .chtab.on{background:#7c3aed;color:#fff;border-color:#7c3aed}
/* === 追加到 assets/style.css 末尾：图片/文件展示 === */
.atts{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;align-items:center}
.upimg{max-width:220px;max-height:220px;border-radius:8px;border:1px solid var(--line);object-fit:cover}
.filelink{display:inline-flex;align-items:center;gap:6px;background:#eef3fb;color:var(--brand);
  border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:14px;text-decoration:none}
.filelink:hover{background:#e2ebf8;text-decoration:none}