/* 智造提效工坊 · 共享样式（知识库页面） */
:root{--bg:#F7F9FC;--card:#FFFFFF;--ink:#16283B;--muted:#55677C;--line:#E3E9F1;--brand:#0E5FD8;--brand-dk:#0A4AA8;--ok:#0FA37F;--warn:#C46A00;--radius:14px}
*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html{scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Segoe UI",Roboto,"Microsoft YaHei",sans-serif;background:var(--bg);color:var(--ink);font-size:16px;line-height:1.75}
.wrap{max-width:800px;margin:0 auto;padding:0 20px}
a:focus-visible,button:focus-visible,input:focus-visible,textarea:focus-visible{outline:3px solid rgba(14,95,216,.45);outline-offset:2px}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* nav */
nav.navbar,nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
nav .wrap{display:flex;align-items:center;justify-content:space-between;height:60px}
.logo{font-weight:800;font-size:17px;text-decoration:none;color:var(--ink)}
.logo b{color:var(--brand)}
.nav-links{display:flex;gap:4px;align-items:center}
.nav-links a{color:var(--muted);text-decoration:none;font-size:14px;padding:10px 12px;border-radius:10px}
.nav-links a:hover{color:var(--ink);background:#EEF3FA}
.btn{display:inline-block;background:var(--brand);color:#fff!important;text-decoration:none;font-weight:700;font-size:15px;padding:11px 22px;border-radius:12px;border:none;cursor:pointer;transition:background .2s;min-height:44px}
.btn:hover{background:var(--brand-dk)}
@media(max-width:720px){.nav-links a:not(.btn){display:none}}

/* 面包屑 */
.crumb{font-size:13.5px;color:var(--muted);padding-top:22px}
.crumb a{color:var(--muted)}

/* 正文 */
.art{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:30px clamp(18px,4vw,40px);margin-top:14px}
.art h1{font-size:clamp(24px,4vw,32px);line-height:1.3;margin-bottom:6px}
.art .meta{font-size:13px;color:var(--muted);margin-bottom:26px}
.art h2{font-size:21px;margin:34px 0 12px;padding-left:10px;border-left:4px solid var(--brand)}
.art h3{font-size:17px;margin:24px 0 8px}
.art p{margin:10px 0;color:#243B52}
.art strong{color:var(--ink)}
.art ul,.art ol{margin:10px 0 14px 22px}
.art li{margin:6px 0}

/* 表格 */
.tbl-wrap{overflow-x:auto;margin:16px 0;border-radius:12px;border:1px solid var(--line)}
table{width:100%;border-collapse:collapse;background:var(--card);font-size:14px;min-width:520px}
th{background:#EEF3FA;text-align:left;padding:10px 12px;font-weight:700;white-space:nowrap}
td{padding:9px 12px;border-top:1px solid var(--line);vertical-align:top}
tr:hover td{background:#FBFCFE}

/* 代码 */
pre{background:#10243E;color:#DCE7F5;border-radius:12px;padding:16px;overflow-x:auto;margin:14px 0;font-size:13px;line-height:1.6}
code{font-family:ui-monospace,SFMono-Regular,Consolas,Menlo,monospace}
.art p code,.art li code,td code{background:#EDF2F9;color:#0A4AA8;border-radius:6px;padding:1px 6px;font-size:.88em;overflow-wrap:anywhere}
.art > code,h2+code,h3+code,p+code,li+code{display:block;white-space:pre-wrap;background:#10243E;color:#DCE7F5;border-radius:12px;padding:14px;font-size:13px;line-height:1.6;margin:14px 0;overflow-x:auto}

/* 提示框 */
.co{border-left:4px solid var(--ok);background:#EDF9F5;border-radius:0 12px 12px 0;padding:12px 16px;margin:16px 0;font-size:14.5px}
.co::before{display:block;font-weight:800;font-size:12.5px;letter-spacing:2px;margin-bottom:4px}
.co-tip{border-color:var(--ok);background:#EDF9F5}.co-tip::before{content:"技巧 · TIP";color:var(--ok)}
.co-warn{border-color:var(--warn);background:#FDF6EC}.co-warn::before{content:"踩坑 · WARN";color:var(--warn)}
.co-cost{border-color:var(--brand);background:#EDF3FC}.co-cost::before{content:"算账 · COST";color:var(--brand)}

/* 行动清单 */
ol.todo{counter-reset:t;margin:16px 0;background:#F2F7FE;border:1px solid #D8E5F8;border-radius:12px;padding:16px 16px 16px 44px;list-style:none}
ol.todo li{counter-increment:t;position:relative;margin:8px 0;font-size:15px}
ol.todo li::before{content:counter(t);position:absolute;left:-32px;top:2px;width:22px;height:22px;border-radius:50%;background:var(--brand);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center}

/* 课程卡片（索引页用） */
.cards{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:20px 0}
@media(max-width:600px){.cards{grid-template-columns:1fr}}
.card-link{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s}
.card-link:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(14,95,216,.12)}
.card-link small{color:var(--brand);font-weight:800;font-size:12px;letter-spacing:1px}
.card-link h3{font-size:16px;margin:4px 0 6px}
.card-link p{font-size:13.5px;color:var(--muted);line-height:1.6}

/* 文末转化带 */
.cta-band{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;background:#10243E;border-radius:12px;padding:18px 20px;margin-top:30px}
.cta-band b{color:#fff;font-size:15.5px}
.cta-band span{color:#AFC3DB;font-size:13px;display:block;margin-top:2px}

/* 上/下课翻页 */
.pager{display:flex;justify-content:space-between;gap:10px;margin:16px 0 8px}
.pager a{flex:1;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 14px;font-size:13.5px;color:var(--muted)!important;text-decoration:none;min-height:44px;display:flex;align-items:center}
.pager a:last-child{text-align:right;justify-content:flex-end}
.pager a:hover{border-color:rgba(14,95,216,.4);color:var(--brand)!important}

footer{border-top:1px solid var(--line);padding:26px 0;margin-top:30px;color:var(--muted);font-size:13px}
footer .wrap{display:flex;justify-content:space-between;flex-wrap:wrap;gap:8px}

/* 作品卡片 */
.works-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:18px 0}
@media(max-width:600px){.works-grid{grid-template-columns:1fr}}
.work-card{position:relative;display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s}
.work-card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(14,95,216,.12)}
.work-card .wt{font-size:16px;font-weight:800}
.work-card .wd{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.6}
.work-card .wn{position:absolute;top:14px;right:16px;font-size:11.5px;font-weight:800;color:var(--brand);background:#EAF1FC;border-radius:8px;padding:2px 10px}
.work-card.soon{opacity:.62;cursor:default}
.work-card.soon .wn{color:var(--muted);background:#EEF1F5}

/* 作品详情 meta 卡 */
.meta-card{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;background:#F2F7FE;border:1px solid #D8E5F8;border-radius:12px;padding:14px 16px;margin:18px 0}
@media(max-width:600px){.meta-card{grid-template-columns:repeat(2,1fr)}}
.meta-card div small{display:block;color:var(--brand);font-weight:800;font-size:11.5px;letter-spacing:1px}
.meta-card div span{font-size:13.5px;color:var(--ink)}

/* 评论 */
.comments{margin-top:30px;border-top:2px solid var(--line);padding-top:22px}
.comments h3{font-size:17px;margin-bottom:4px}
.comments .c-tip{font-size:13px;color:var(--muted);margin-bottom:14px}
.c-item{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:12px 16px;margin:10px 0}
.c-item .c-head{font-size:12.5px;color:var(--muted);margin-bottom:4px}
.c-item .c-head b{color:var(--ink);font-size:13.5px}
.c-item .c-body{font-size:14.5px;white-space:pre-wrap;word-break:break-word}
.c-form{background:#F2F7FE;border:1px solid #D8E5F8;border-radius:12px;padding:16px;margin-top:14px}
.c-form input,.c-form textarea{width:100%;border:1.5px solid var(--line);border-radius:10px;padding:10px 12px;font-size:14px;font-family:inherit;outline:none;background:#fff;margin-bottom:8px;color:var(--ink)}
.c-form input:focus,.c-form textarea:focus{border-color:var(--brand)}
.c-form textarea{min-height:72px;resize:vertical}
.c-form .btn{width:100%;padding:9px 0;min-height:0;font-size:14px}
.c-msg{font-size:13px;margin-top:8px;display:none}
.c-msg.ok{display:block;color:var(--ok)}
.c-msg.bad{display:block;color:#C0392B}

/* 知识树节点 */
.tree{margin:18px 0}
.node{display:flex;gap:14px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;margin:10px 0}
.node .no{flex-shrink:0;width:34px;height:34px;border-radius:10px;background:linear-gradient(135deg,var(--brand),#2E86FF);color:#fff;font-weight:800;display:flex;align-items:center;justify-content:center;font-size:15px}
.node .nb{flex:1;min-width:0}
.node h3{font-size:16px;margin-bottom:4px}
.node .nd{font-size:13.5px;color:var(--muted);line-height:1.6}
.node .nlinks{margin-top:8px;display:flex;flex-wrap:wrap;gap:8px}
.node .nlinks a{font-size:12.5px;color:var(--brand);background:#EAF1FC;border-radius:8px;padding:4px 10px;text-decoration:none;font-weight:700}
.node .nlinks .todo-tag{font-size:12.5px;color:var(--warn);background:#FDF6EC;border-radius:8px;padding:4px 10px;font-weight:700}
@media(max-width:600px){.node{flex-direction:row}.node .no{width:30px;height:30px;font-size:13px}}

/* 首页人物区 */
.hero-me{background:linear-gradient(180deg,#EDF3FB,var(--bg));border-bottom:1px solid var(--line);padding:56px 0 40px}
.hero-me h1{font-size:clamp(26px,4.5vw,38px);line-height:1.3}
.hero-me .p-line{color:var(--muted);font-size:16px;margin:14px 0 24px;max-width:660px}
.duo{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:26px 0}
@media(max-width:720px){.duo{grid-template-columns:1fr}}
.duo-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s}
.duo-card:hover{transform:translateY(-3px);box-shadow:0 10px 26px rgba(14,95,216,.14)}
.duo-card .dt{font-size:19px;font-weight:800}
.duo-card .dt em{font-style:normal;color:var(--brand);margin-right:8px}
.duo-card .dd{font-size:14px;color:var(--muted);margin-top:8px;line-height:1.7}
.duo-card .dl{display:inline-block;margin-top:12px;font-size:13.5px;font-weight:700;color:var(--brand)}

/* ===== 知识库侧边栏布局 v2 ===== */
.kb-topbar{display:none}
.kb-layout{display:grid;grid-template-columns:262px minmax(0,1fr);gap:28px;max-width:1200px;margin:0 auto;padding:22px 20px 40px}
.kb-side{position:sticky;top:70px;align-self:start;max-height:calc(100vh - 90px);overflow-y:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px 12px;scrollbar-width:thin}
.kb-side-head{font-weight:800;font-size:15px;padding:4px 8px 10px;border-bottom:1px solid var(--line);margin-bottom:8px}
.kb-side a{display:block;text-decoration:none;color:var(--ink);font-size:13.5px;padding:6px 8px;border-radius:8px;line-height:1.45}
.kb-side a:hover{background:#EEF3FA}
.kl-home{font-weight:700;color:var(--brand)!important;margin-bottom:6px}
.kb-side details{margin:2px 0}
.kb-side summary{list-style:none;cursor:pointer;font-size:13.5px;font-weight:700;padding:6px 8px;border-radius:8px;display:flex;align-items:center;gap:6px}
.kb-side summary:hover{background:#EEF3FA}
.kb-side summary::-webkit-details-marker{display:none}
.kb-side summary::after{content:"›";margin-left:auto;color:var(--muted);transition:transform .2s}
.kb-side details[open] summary::after{transform:rotate(90deg)}
.kb-side .si{width:20px;text-align:center}
.kb-side .cnt{margin-left:auto;margin-right:6px;font-size:11px;color:var(--muted);background:#EEF1F5;border-radius:8px;padding:1px 7px;font-weight:700}
.kb-side details[open] > .kl-art, .kb-side details[open] > .kl-idx{padding-left:16px}
.kl-idx{font-weight:700;color:var(--brand)!important;font-size:12.5px!important}
.kl-art{color:var(--muted)!important;font-size:13px!important}
.kl-art.on{background:#EAF1FC;color:var(--brand)!important;font-weight:700}
.kl-art.dim{color:var(--muted)!important;font-style:italic}
.kb-side-tip{margin-top:10px;padding:8px;font-size:11.5px;color:var(--muted);text-align:center;border-top:1px dashed var(--line)}
.kb-main{min-width:0}
.kb-main .art{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px 28px}
/* 板块门户卡片 */
.sec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:18px}
@media(max-width:720px){.sec-grid{grid-template-columns:1fr}}
.sec-card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;text-decoration:none;color:var(--ink);transition:transform .2s,box-shadow .2s}
.sec-card:hover{transform:translateY(-2px);box-shadow:0 8px 20px rgba(14,95,216,.12)}
.sec-card .sc-head{display:flex;align-items:center;gap:8px;font-size:16px}
.sec-card .cnt{margin-left:auto;font-size:11.5px;color:var(--muted);background:#EEF1F5;border-radius:8px;padding:2px 8px;font-weight:700}
.sec-card p{font-size:13.5px;color:var(--muted);margin-top:8px;line-height:1.65}
.sec-card .sc-latest{margin-top:10px;display:flex;flex-direction:column;gap:4px}
.sec-card .sc-latest a{font-size:12.5px;color:var(--brand);text-decoration:none;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
/* 板块文章卡 */
.artcards{margin-top:16px}
.artcard{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px 20px;margin:10px 0;text-decoration:none;color:var(--ink)}
.artcard:hover{border-color:rgba(14,95,216,.45)}
.artcard .ac-t{font-size:16px;font-weight:800}
.artcard p{font-size:13.5px;color:var(--muted);margin-top:6px;line-height:1.65}
.artcard .ac-m{margin-top:8px;display:flex;gap:10px;align-items:center;font-size:12px;color:var(--muted)}
.src-badge{background:#EAF1FC;color:var(--brand);font-weight:700;border-radius:8px;padding:2px 9px;font-size:11.5px}
@media(max-width:900px){
  .kb-layout{display:block;padding:0 0 30px}
  .kb-topbar{display:flex;position:sticky;top:60px;z-index:40;background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);padding:10px 14px;gap:10px;align-items:center;font-size:13.5px;font-weight:700;color:var(--muted)}
  .kb-topbar button{border:1px solid var(--line);background:#fff;border-radius:10px;padding:8px 14px;font-size:13px;cursor:pointer;min-height:38px}
  .kb-side{display:none;position:fixed;inset:0;top:0;z-index:100;max-height:none;border-radius:0;overflow-y:auto}
  .kb-side.open{display:block}
  .kb-main .art{border:none;border-radius:0;padding:20px 18px}
}