/* AI 全网知识问答 + 社区论坛 /kb（v1.27.0 改版） */
.kb-hero{padding:calc(var(--nav-h) + 44px) 0 18px;text-align:center}
.kb-kicker{display:inline-block;font-size:12px;font-weight:800;letter-spacing:.16em;color:var(--primary);background:rgba(61,90,254,.08);border-radius:999px;padding:6px 14px}
.kb-hero h1{font-size:30px;margin:14px 0 8px}
.kb-hero p{color:#6A6F8F;font-size:14.5px}

/* ---- 双 Tab ---- */
.kb-tabs{display:flex;gap:10px;justify-content:center;margin-top:6px}
.kb-tabs button{display:inline-flex;align-items:center;gap:8px;border:1.5px solid #E3E6EF;background:#fff;color:#3A4157;
  border-radius:999px;padding:10px 22px;font-size:14.5px;font-weight:600;cursor:pointer;transition:all var(--dur-mid)}
.kb-tabs button:hover{border-color:rgba(61,90,254,.45);color:var(--primary)}
.kb-tabs button.cur{background:linear-gradient(135deg,#3D5AFE,#7C4DFF);color:#fff;border-color:transparent;box-shadow:var(--glow-l)}
.kb-tabs button span{font-size:15px}
.kb-tabs button span svg{width:18px;height:18px;display:block}

/* ---- Tab1：AI 问答 ---- */
.kb-askwrap{max-width:820px;margin:0 auto;padding-bottom:44px}
.kb-askbox{background:#fff;border:1.5px solid #E3E6EF;border-radius:18px;padding:16px;box-shadow:var(--shadow-s);transition:border-color var(--dur-mid),box-shadow var(--dur-mid)}
.kb-askbox:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px rgba(61,90,254,.08)}
.kb-askbox textarea{width:100%;box-sizing:border-box;border:none;outline:none;resize:none;font-size:15px;line-height:1.7;color:#252B40;background:transparent}
.kb-askbar{display:flex;align-items:center;justify-content:space-between;margin-top:10px;padding-top:10px;border-top:1px dashed #EDEFF6}
.kb-ask-hint{font-size:12px;color:#9AA1B5}
.kb-hot{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:14px 0 0}
.kb-hot button{cursor:pointer;font-size:12.5px;color:var(--ink-2);background:#fff;border:1px solid #EDEFF6;border-radius:999px;padding:6px 14px;transition:all var(--dur-mid)}
.kb-hot button:hover{border-color:var(--primary);color:var(--primary);background:rgba(61,90,254,.05)}
.qa-answer{margin-top:18px;background:#fff;border:1px solid #E8EAF3;border-radius:16px;padding:20px 22px}
.qa-answer .qa-q{display:flex;gap:10px;align-items:flex-start;font-size:15.5px;font-weight:700;color:#252B40;margin-bottom:12px}
.qa-answer .qa-q em{font-style:normal;flex:none;font-size:12px;font-weight:700;color:#fff;background:linear-gradient(135deg,#3D5AFE,#7C4DFF);border-radius:6px;padding:3px 8px;margin-top:1px}
.qa-answer .qa-md{font-size:14.2px;line-height:1.9;color:#3A4157;border-top:1px dashed #EDEFF6;padding-top:14px}
.qa-answer .qa-md h3{font-size:15.5px;margin:14px 0 8px}
.qa-answer .qa-md ul,.qa-answer .qa-md ol{padding-left:1.4em;margin:8px 0}
.qa-answer .qa-md li{margin:5px 0}
.qa-answer .qa-md blockquote{margin:10px 0;padding:10px 14px;border-left:3px solid rgba(61,90,254,.5);background:rgba(61,90,254,.05);border-radius:0 10px 10px 0;color:var(--ink-2);font-size:13.5px}
.qa-answer .qa-md code{display:inline-block;background:#F3F5FB;border:1px solid #E5E8F2;border-radius:6px;padding:1px 7px;font-size:12.5px;color:#D63384;font-family:var(--mono);word-break:break-all}
.qa-answer .qa-md pre{background:#101430;color:#DCE2FF;border-radius:12px;padding:14px 16px;overflow-x:auto;font-family:var(--mono);font-size:.82rem;line-height:1.7;margin:10px 0}
.qa-answer .qa-foot{display:flex;gap:12px;align-items:center;margin-top:14px;padding-top:12px;border-top:1px dashed #EDEFF6;font-size:12px;color:#9AA1B5}
.qa-answer .qa-foot .qa-src{font-weight:700;color:var(--primary);background:rgba(61,90,254,.08);border-radius:6px;padding:2px 8px}
.qa-answer .qa-foot button{margin-left:auto;cursor:pointer;border:1px solid #E3E6EF;background:#fff;border-radius:8px;padding:6px 12px;font-size:12.5px;color:var(--ink-2)}
.qa-answer .qa-foot button:hover{border-color:var(--primary);color:var(--primary)}

/* ---- 站内 FAQ（降级为辅助区） ---- */
.kb-faq{margin-top:34px}
.kb-faq-head{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin-bottom:14px}
.kb-faq-head h2{font-size:17px;margin:0}
.kb-search{position:relative;flex:1;min-width:220px;max-width:420px}
.kb-search svg{position:absolute;left:14px;top:50%;transform:translateY(-50%);width:16px;height:16px;color:#9AA1B5}
.kb-search input{width:100%;box-sizing:border-box;border:1.5px solid #E3E6EF;background:#fff;border-radius:999px;padding:10px 16px 10px 40px;font-size:13.5px;outline:none;transition:border-color var(--dur-mid),box-shadow var(--dur-mid)}
.kb-search input:focus{border-color:var(--primary);box-shadow:0 0 0 4px rgba(61,90,254,.10)}
.kb-faq .kb-cat h2{scroll-margin-top:calc(var(--nav-h) + 20px)}
.kb-cat{margin-bottom:28px}
.kb-cat h2{display:flex;align-items:center;gap:10px;font-size:17px;margin:0 0 12px}
.kb-cat h2 span{font-size:12px;color:#9AA1B5;font-weight:500;background:#F1F3FA;border-radius:999px;padding:3px 10px}
.kb-qa{background:#fff;border:1px solid #E8EAF3;border-radius:14px;margin-bottom:10px;overflow:hidden}
.kb-qa[open]{border-color:rgba(61,90,254,.35);box-shadow:var(--shadow-l)}
.kb-qa summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:10px;padding:14px 18px;font-size:14px;font-weight:600;color:#252B40}
.kb-qa summary::-webkit-details-marker{display:none}
.kb-qa summary svg{margin-left:auto;width:16px;height:16px;color:#9AA1B5;flex:none;transition:transform var(--dur-mid)}
.kb-qa[open] summary svg{transform:rotate(180deg)}
.kb-qa-a{padding:2px 18px 16px;font-size:13.5px;color:#4A5165;line-height:1.85;border-top:1px dashed #EDEFF6;padding-top:13px}
.kb-qa-a a{color:var(--primary);font-weight:600}
.kb-qa-a code{display:inline-block;background:#F3F5FB;border:1px solid #E5E8F2;border-radius:6px;padding:1px 7px;font-size:12.5px;color:#D63384;font-family:var(--mono);white-space:pre-wrap;word-break:break-all;margin:1px 0}
.kb-empty{text-align:center;color:#9AA1B5;padding:40px 0;font-size:14px}
.kb-loading{text-align:center;color:#9AA1B5;padding:36px 0;font-size:14px}
.kb-loading svg{width:16px;height:16px;vertical-align:-3px;margin-right:6px}

/* ---- Tab2：社区论坛 ---- */
.cm-toolbar{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.cm-boards{display:flex;gap:8px;overflow-x:auto;scrollbar-width:none;flex:1;-webkit-overflow-scrolling:touch;touch-action:pan-x;overscroll-behavior-x:contain}
.cm-boards::-webkit-scrollbar{display:none}
/* v1.70.10 仅移动端改为换行；桌面常驻横滑不变 */
@media(max-width:640px){.cm-boards{flex-wrap:wrap;overflow:visible;gap:6px}}
.cm-boards button{flex:none;cursor:pointer;border:1.5px solid #E3E6EF;background:#fff;color:#3A4157;border-radius:999px;padding:8px 16px;font-size:13.5px;font-weight:600;transition:all var(--dur-mid)}
.cm-boards button:hover{border-color:rgba(61,90,254,.45);color:var(--primary)}
.cm-boards button.cur{background:linear-gradient(135deg,#3D5AFE,#7C4DFF);color:#fff;border-color:transparent}
.cm-list{display:flex;flex-direction:column;gap:12px;max-width:820px}
.cm-item{background:#fff;border:1px solid #E8EAF3;border-radius:16px;padding:18px 20px;cursor:pointer;transition:border-color var(--dur-mid),box-shadow var(--dur-mid)}
.cm-item:hover{border-color:rgba(61,90,254,.4);box-shadow:var(--shadow-m)}
.cm-item-top{display:flex;align-items:center;gap:8px;margin-bottom:8px;flex-wrap:wrap}
.cm-badge{font-size:11.5px;font-weight:700;color:var(--primary);background:rgba(61,90,254,.08);border-radius:6px;padding:2px 9px}
.cm-badge.top{color:#C2410C;background:rgba(234,88,12,.1)}
.cm-item-title{font-size:15.5px;font-weight:700;color:#252B40;line-height:1.5}
.cm-item-excerpt{font-size:13.2px;color:#6A6F8F;line-height:1.75;margin-top:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.cm-item-foot{display:flex;gap:16px;align-items:center;margin-top:12px;font-size:12.5px;color:#9AA1B5;flex-wrap:wrap}
.cm-item-foot b{font-weight:600;color:#4A5165}
.cm-item-foot span svg,.cm-d-meta span svg{width:14px;height:14px;flex:none}
.cm-empty{text-align:center;color:#9AA1B5;padding:50px 0;font-size:14px}
.cm-more{text-align:center;padding:18px 0 60px}

/* 发帖模态（复用全站 .modal 结构） */
.cm-label{display:block;font-size:13px;font-weight:600;color:#3A4157;margin:12px 0 6px}
.cm-label:first-child{margin-top:0}
.cm-form-act{display:flex;align-items:center;justify-content:space-between;margin-top:16px}
.cm-hint{font-size:12px;color:#9AA1B5}

/* 帖子详情抽屉 */
.cm-drawer{position:fixed;inset:0;z-index:1200;pointer-events:none}
.cm-drawer.show{pointer-events:auto}
.cm-drawer-mask{position:absolute;inset:0;background:rgba(20,24,44,.45);opacity:0;transition:opacity .25s}
.cm-drawer.show .cm-drawer-mask{opacity:1}
.cm-drawer-panel{position:absolute;top:0;right:-560px;width:min(560px,94vw);height:100%;background:#F6F7FB;display:flex;flex-direction:column;transition:right .28s cubic-bezier(.22,1,.3,1);box-shadow:-12px 0 40px rgba(20,24,44,.18)}
.cm-drawer.show .cm-drawer-panel{right:0}
.cm-dh{display:flex;align-items:center;gap:12px;background:#fff;padding:16px 20px;border-bottom:1px solid #EDEFF6}
.cm-dh-t{flex:1;min-width:0}
.cm-dh-t h3{margin:0;font-size:16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.cm-dh-t small{font-size:12px;color:#9AA1B5}
.cm-x{border:none;background:none;font-size:18px;cursor:pointer;color:#9AA1B5;padding:6px}
.cm-x svg{width:18px;height:18px;display:block}
.cm-dbody{flex:1;overflow-y:auto;padding:20px;-webkit-overflow-scrolling:touch}
.cm-d-meta{display:flex;gap:10px;align-items:center;font-size:12.5px;color:#9AA1B5;margin-bottom:14px;flex-wrap:wrap}
.cm-d-content{background:#fff;border:1px solid #E8EAF3;border-radius:14px;padding:18px;font-size:14.2px;line-height:1.9;color:#3A4157;white-space:pre-wrap;word-break:break-word}
.cm-d-acts{display:flex;gap:10px;margin:14px 0}
.cm-d-acts button{flex:none;cursor:pointer;border:1.5px solid #E3E6EF;background:#fff;border-radius:10px;padding:8px 16px;font-size:13.5px;font-weight:600;color:#3A4157;transition:all var(--dur-mid)}
.cm-d-acts button:hover,.cm-d-acts button.liked{border-color:rgba(239,68,68,.5);color:#EF4444;background:rgba(239,68,68,.05)}
.cm-d-replies h4{font-size:14px;color:#3A4157;margin:18px 0 10px}
.cm-reply{background:#fff;border:1px solid #EDEFF6;border-radius:12px;padding:12px 14px;margin-bottom:10px}
.cm-reply-h{display:flex;align-items:center;gap:8px;font-size:12.5px;color:#9AA1B5;margin-bottom:6px}
.cm-reply-h b{color:#4A5165;font-weight:600}
.cm-reply-c{font-size:13.5px;color:#3A4157;line-height:1.8;white-space:pre-wrap;word-break:break-word}
.cm-reply-like{flex:none;cursor:pointer;border:1.5px solid #E3E6EF;background:#fff;border-radius:9px;padding:5px 12px;font-size:12.5px;font-weight:600;color:#7A8198;transition:all var(--dur-mid);margin-top:8px}
.cm-reply-like:hover,.cm-reply-like.liked{border-color:rgba(239,68,68,.5);color:#EF4444;background:rgba(239,68,68,.05)}
.cm-reply-form{margin-top:16px}
.cm-reply-form textarea{width:100%;box-sizing:border-box;border:1.5px solid #E3E6EF;background:#fff;border-radius:12px;padding:12px 14px;font-size:13.5px;resize:vertical;min-height:76px}
.cm-reply-form textarea:focus{border-color:var(--primary);outline:none}
.cm-reply-form .btn{margin-top:10px;width:100%}
.cm-login-tip{background:rgba(61,90,254,.06);border:1px solid rgba(61,90,254,.2);border-radius:12px;padding:14px;font-size:13px;color:var(--ink-2);text-align:center;margin-top:14px}
.cm-login-tip a{color:var(--primary);font-weight:700}

@media(max-width:640px){
  .kb-hero h1{font-size:24px}
  .kb-tabs button{padding:9px 16px;font-size:13.5px}
  .cm-toolbar{flex-direction:column;align-items:stretch}
  .cm-item{padding:15px 16px}
}