/* ---------- 基础 ---------- */
.kta,.kta *{box-sizing:border-box}
/* flex 列 + footer margin-top:auto：内容不满一屏时页脚贴底，
   否则 footer 下面会露出一条米色空白，看起来像页面没加载完。 */
body.kt-single{
  margin:0;background:#FBFAF1;color:#16180F;
  display:flex;flex-direction:column;min-height:100vh;
  font-family:Manrope,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.65;-webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
}
/* :where() 让这条兜底规则的特异性降到 0 —— 否则 body.kt-single a (0,1,1) 会和
   .kta-dock a 打平，靠源顺序决胜负，导航和按钮的文字颜色就会莫名其妙变绿。 */
body.kt-single :where(a){color:#1F5C4D;text-decoration:none}
body.kt-single :where(a):hover{text-decoration:underline;text-underline-offset:2px}
/* body 是 flex 列，但里面所有块都用 margin:0 auto 居中 —— auto margin 会让
   stretch 失效，内容会被压成 fit-content。所以再套一层普通块容器。 */
.kta-page{flex:1 0 auto;width:100%}
.kta-wrap{max-width:1080px;margin:0 auto;padding:0 24px}

/* ---------- 顶部导航 ---------- */
.kta-nav{position:sticky;top:0;z-index:40;background:rgba(251,250,241,.88);backdrop-filter:saturate(180%) blur(10px);border-bottom:1px solid #E6E1D4}
body.admin-bar .kta-nav{top:32px}
.kta-nav-in{display:flex;align-items:center;gap:26px;height:64px;max-width:1080px;margin:0 auto;padding:0 24px}
.kta-brand{display:flex;align-items:center;gap:9px;font-size:16px;font-weight:780;letter-spacing:-.02em;color:#16180F}
.kta-brand:hover{text-decoration:none}
.kta-brand i{width:9px;height:9px;border-radius:50%;background:#1F5C4D;box-shadow:0 0 0 4px #E7F0EC}
.kta-links{display:flex;gap:24px;margin-left:auto;align-items:center;font-size:14.5px;font-weight:600;white-space:nowrap}
.kta-links a{color:#5C6157}
.kta-links a:hover{color:#16180F;text-decoration:none}
.kta-links a[aria-current]{color:#16180F}
.kta-links .kta-cta-sm{background:#1F5C4D;color:#fff;padding:9px 16px;border-radius:10px;font-size:14px}
.kta-links .kta-cta-sm:hover{background:#2C7A66;color:#fff}
/* 窄屏只留 Articles 和主按钮，其余收进页面下方；五个链接挤在 390px 会把页头撑出横向滚动 */
@media(max-width:700px){
  .kta-nav-in{gap:12px;padding:0 18px}
  .kta-links{gap:14px;font-size:14px}
  .kta-links a.kta-m-hide{display:none}
}

/* ---------- 面包屑 ---------- */
.kta-crumb{max-width:1080px;margin:0 auto;padding:22px 24px 0;font-size:13px;color:#8A8F83}
.kta-crumb a{color:#8A8F83}
.kta-crumb a:hover{color:#1F5C4D}
.kta-crumb span{color:#3D423A}

/* ---------- 标题区 ---------- */
.kta-head{max-width:1080px;margin:0 auto;padding:14px 24px 0}
.kta-tag{display:inline-block;font-size:10.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#1F5C4D;background:#E7F0EC;border:1px solid #CFE2D9;padding:5px 10px;border-radius:99px}
.kta-head h1{font-size:clamp(28px,4.2vw,42px);line-height:1.12;letter-spacing:-.032em;font-weight:780;margin:16px 0 14px;max-width:20em}
.kta-lede{font-size:17.5px;line-height:1.6;color:#5C6157;margin:0 0 20px;max-width:38em}
.kta-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 14px;font-size:13px;color:#8A8F83;padding-bottom:26px;border-bottom:1px solid #E6E1D4}
.kta-meta b{color:#3D423A;font-weight:700}
.kta-meta i{width:3px;height:3px;border-radius:50%;background:#C6C1B1;display:inline-block}
@media(max-width:520px){.kta-meta i{display:none}}

/* ---------- 两栏 ---------- */
/* 封面图：1080 的容器里给到 780，再宽就把首屏挤没了。 */
.kta-cover{max-width:1080px;margin:0 auto;padding:6px 24px 0}
.kta-cover img{display:block;width:100%;max-width:780px;height:auto;border-radius:14px;
  border:1px solid #E6E1D4;background:#EFEDE2}
@media(max-width:720px){.kta-cover{padding-left:20px;padding-right:20px}}

.kta-layout{max-width:1080px;margin:0 auto;padding:34px 24px 10px;display:grid;grid-template-columns:minmax(0,1fr) 296px;gap:56px;align-items:start}
@media(max-width:960px){.kta-layout{grid-template-columns:1fr;gap:34px}}

/* ---------- 正文 ---------- */
.kta-body{min-width:0;max-width:720px}
.kta-content{font-size:17px;line-height:1.74;color:#2A2E24}
.kta-content>p:first-of-type{font-size:18.5px;line-height:1.68;color:#1D211A}
.kta-content p{margin:0 0 19px}
.kta-content h2{position:relative;font-size:24px;line-height:1.28;letter-spacing:-.022em;font-weight:760;color:#16180F;margin:44px 0 14px;padding-top:2px;scroll-margin-top:88px}
.kta-content h2::before{content:"";position:absolute;left:-18px;top:9px;width:6px;height:6px;border-radius:2px;background:#1F5C4D;opacity:.55}
@media(max-width:960px){.kta-content h2::before{display:none}}
.kta-content h3{font-size:18.5px;line-height:1.35;font-weight:730;letter-spacing:-.012em;margin:30px 0 10px;color:#16180F;scroll-margin-top:88px}
.kta-content h4{font-size:16px;font-weight:730;margin:24px 0 8px}
.kta-content ul,.kta-content ol{margin:0 0 20px;padding-left:24px}
.kta-content li{margin:0 0 8px}
.kta-content li::marker{color:#1F5C4D}
.kta-content strong{font-weight:720;color:#16180F}
.kta-content a{border-bottom:1px solid rgba(31,92,77,.28)}
.kta-content a:hover{border-bottom-color:#1F5C4D;text-decoration:none}
.kta-tw{overflow-x:auto;margin:24px 0 26px;border:1px solid #E6E1D4;border-radius:12px;background:#fff}
.kta-content table{width:100%;border-collapse:collapse;font-size:14.5px;margin:0;min-width:420px}
.kta-content th,.kta-content td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid #EFEBE0}
.kta-content th{background:#F4F7F4;font-weight:720;color:#16180F;font-size:13px;letter-spacing:.02em;text-transform:uppercase}
.kta-content tr:last-child td{border-bottom:0}
.kta-content td:first-child{font-weight:600;color:#16180F}
.kta-content code{background:#F4F1E6;border:1px solid #E9E4D5;padding:1px 5px;border-radius:5px;font-size:13.5px;font-family:"Fira Code",ui-monospace,SFMono-Regular,Menlo,monospace}
.kta-content pre{background:#1D211A;color:#EDF1E8;padding:18px 20px;border-radius:12px;overflow-x:auto;font-size:13.5px;line-height:1.6;margin:24px 0}
.kta-content pre code{background:none;border:0;color:inherit;padding:0}
.kta-content blockquote{margin:26px 0;padding:4px 0 4px 20px;border-left:3px solid #CFE2D9;color:#4A4F45;font-style:normal}
.kta-content blockquote p:last-child{margin-bottom:0}
.kta-content hr{border:0;border-top:1px solid #E6E1D4;margin:36px 0}
.kta-content img{max-width:100%;height:auto;border-radius:12px;border:1px solid #E6E1D4}

/* ---------- 目录（正文顶部，仅窄屏） ---------- */
.kta-toc-m{display:none;margin:0 0 26px;border:1px solid #E6E1D4;background:#fff;border-radius:12px;padding:0 16px}
.kta-toc-m summary{cursor:pointer;font-size:13px;font-weight:750;letter-spacing:.04em;text-transform:uppercase;color:#5C6157;padding:14px 0;list-style:none}
.kta-toc-m summary::-webkit-details-marker{display:none}
.kta-toc-m summary::after{content:"+";float:right;color:#1F5C4D;font-weight:700}
.kta-toc-m[open] summary::after{content:"–"}
.kta-toc-m ol{margin:0 0 14px;padding-left:18px;font-size:14px;line-height:1.5}
.kta-toc-m li{margin-bottom:8px}
@media(max-width:960px){.kta-toc-m{display:block}}

/* ---------- 侧栏 ---------- */
/* 整个侧栏 sticky，并限高：TOC 十几项 + 工具卡能超过一屏，超了就内部滚。
   只 sticky 第一张卡的话，aside 一滚完 TOC 就跟着走了，长文后半段右侧全空。 */
.kta-side{position:sticky;top:88px;display:flex;flex-direction:column;gap:16px;max-height:calc(100vh - 112px);overflow-y:auto;scrollbar-width:thin;scrollbar-color:#D8D3C4 transparent;padding-right:2px}
.kta-side::-webkit-scrollbar{width:6px}
.kta-side::-webkit-scrollbar-thumb{background:#DCD7C8;border-radius:3px}
body.admin-bar .kta-side{top:120px;max-height:calc(100vh - 144px)}
@media(max-width:960px){.kta-side{position:static;top:auto;max-height:none;overflow:visible}}
.kta-card{background:#fff;border:1px solid #E6E1D4;border-radius:14px;padding:20px}
.kta-card h2{font-size:11px;font-weight:800;letter-spacing:.11em;text-transform:uppercase;color:#8A8F83;margin:0 0 14px;line-height:1}
.kta-toc ol{list-style:none;margin:0;padding:0;font-size:13.5px;line-height:1.45}
.kta-toc li{margin:0 0 3px}
.kta-toc a{display:block;color:#5C6157;padding:5px 10px;border-left:2px solid #EDE9DC;border-radius:0 6px 6px 0;transition:.12s}
.kta-toc a:hover{background:#F7F5EC;color:#16180F;text-decoration:none}
.kta-toc a.on{color:#1F5C4D;font-weight:700;background:#F1F6F3;border-left-color:#1F5C4D}
@media(max-width:960px){.kta-toc{display:none}}

.kta-tool{display:block;border:1px solid #E6E1D4;border-radius:12px;padding:13px 14px;margin-bottom:10px;background:#fff;transition:.15s}
.kta-tool:last-child{margin-bottom:0}
.kta-tool:hover{border-color:#B9C8BF;box-shadow:0 8px 20px -16px rgba(22,24,15,.5);text-decoration:none;transform:translateY(-1px)}
.kta-tool b{display:block;font-size:14.5px;font-weight:740;color:#16180F;letter-spacing:-.012em;margin-bottom:3px}
.kta-tool span{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;font-size:12.5px;line-height:1.45;color:#7A7F73}
.kta-tool em{display:inline-block;margin-top:7px;font-style:normal;font-size:12px;font-weight:750;color:#1F5C4D}
.kta-side-note{font-size:12.5px;line-height:1.55;color:#8A8F83;background:#F7F5EC;border:1px solid #EDE9DC;border-radius:12px;padding:14px 16px}
.kta-side-note a{font-weight:700}

/* ---------- 文末 CTA（跨满两栏） ---------- */
.kta-cta{margin:46px 0 0;background:#1F5C4D;border-radius:18px;padding:30px 34px;color:#fff;position:relative;overflow:hidden;display:flex;align-items:center;gap:36px;flex-wrap:wrap}
.kta-cta::after{content:"";position:absolute;right:-50px;top:-60px;width:220px;height:220px;border-radius:50%;background:rgba(255,255,255,.055)}
.kta-cta-txt{flex:1;min-width:260px;position:relative;z-index:1}
.kta-cta .k{font-size:10.5px;font-weight:800;letter-spacing:.13em;text-transform:uppercase;color:#A9CFC0;margin-bottom:9px}
.kta-cta h2{font-size:23px;line-height:1.24;letter-spacing:-.022em;font-weight:760;color:#fff;margin:0 0 8px}
.kta-cta p{font-size:14.5px;line-height:1.6;color:#D6E6DF;margin:0;max-width:40em}
.kta-cta-act{flex:none;position:relative;z-index:1;text-align:right}
.kta-cta a.kta-btn{display:inline-flex;align-items:center;gap:8px;background:#fff;color:#12382D;font-size:15px;font-weight:750;padding:13px 22px;border-radius:11px;white-space:nowrap}
.kta-cta a.kta-btn:hover{background:#EAF3EE;text-decoration:none}
.kta-cta .kta-cta-sub{display:block;margin-top:9px;font-size:12px;color:#A9CFC0}
@media(max-width:760px){.kta-cta{padding:24px 22px;gap:20px}.kta-cta-act{text-align:left;width:100%}.kta-cta a.kta-btn{width:100%;justify-content:center}}

/* ---------- 上下篇 ---------- */
.kta-pn{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin:22px 0 0}
.kta-pn.single{grid-template-columns:1fr}
.kta-pn.single .kta-pn-next{text-align:left}
@media(max-width:640px){.kta-pn{grid-template-columns:1fr}.kta-pn .kta-pn-next{text-align:left}}
.kta-pn a{display:block;border:1px solid #E6E1D4;border-radius:12px;padding:15px 17px;background:#fff;transition:.15s}
.kta-pn a:hover{border-color:#B9C8BF;text-decoration:none}
.kta-pn .k{font-size:10.5px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:#8A8F83;display:block;margin-bottom:6px}
.kta-pn b{font-size:14.5px;font-weight:720;color:#16180F;line-height:1.35;display:block}
.kta-pn .kta-pn-next{text-align:right}

/* ---------- 相关文章 ---------- */
.kta-cta-out{max-width:1080px;margin:0 auto;padding:0 24px}
.kta-more{max-width:1080px;margin:0 auto;padding:20px 24px 70px}
.kta-more-h{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin:34px 0 16px;padding-top:30px;border-top:1px solid #E6E1D4}
.kta-more-h h2{font-size:19px;font-weight:760;letter-spacing:-.02em;margin:0}
.kta-more-h a{font-size:13.5px;font-weight:700;color:#1F5C4D}
.kta-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:820px){.kta-grid{grid-template-columns:1fr}}
.kta-grid .kta-card-link{display:flex;flex-direction:column;background:#fff;border:1px solid #E6E1D4;border-radius:14px;padding:20px;transition:.15s;height:100%}
.kta-grid .kta-card-link:hover{border-color:#B9C8BF;transform:translateY(-2px);box-shadow:0 14px 30px -22px rgba(22,24,15,.5);text-decoration:none}
.kta-grid time{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:#8A8F83;margin-bottom:9px}
.kta-grid h3{font-size:16.5px;line-height:1.32;font-weight:720;letter-spacing:-.015em;margin:0 0 8px;color:#16180F}
.kta-grid p{font-size:13.5px;line-height:1.55;color:#6B7065;margin:0 0 12px}
.kta-grid .m{margin-top:auto;font-size:12.5px;font-weight:750;color:#1F5C4D}

/* ---------- 页脚 ---------- */
.kta-foot{border-top:1px solid #E6E1D4;background:#F7F5EC;margin-top:auto;flex:none}
.kta-foot-in{max-width:1080px;margin:0 auto;padding:30px 24px 34px;display:flex;flex-wrap:wrap;gap:14px 28px;align-items:center;justify-content:space-between}
.kta-foot-links{display:flex;flex-wrap:wrap;gap:8px 20px;font-size:13px}
.kta-foot-links a{color:#5C6157}
.kta-foot-links a:hover{color:#1F5C4D}
.kta-foot p{margin:0;font-size:12.5px;color:#8A8F83}

/* ---------- 移动端浮动工具条 ---------- */
.kta-dock{display:none}
@media(max-width:960px){
  .kta-dock{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:50;align-items:center;gap:12px;padding:10px 16px;background:rgba(251,250,241,.97);border-top:1px solid #E6E1D4;backdrop-filter:blur(10px)}
  .kta-dock b{font-size:13px;font-weight:730;color:#16180F;line-height:1.25;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
  .kta-dock a{flex:none;background:#1F5C4D;color:#fff;font-size:13.5px;font-weight:750;padding:10px 16px;border-radius:10px;white-space:nowrap}
  .kta-dock a:hover{background:#2C7A66;color:#fff;text-decoration:none}
  body.kt-single{padding-bottom:62px}
}
@media print{.kta-nav,.kta-side,.kta-dock,.kta-more,.kta-cta,.kta-foot{display:none}}