@charset "utf-8";

/* ===== 设计变量：改配色只改这一块 ===== */
:root{
  --ink:#192a3d;
  --ink-soft:#4d5c6e;
  --muted:#747474;
  --accent:#ff9131;
  --accent-deep:#ef7d15;
  --accent-2:#ff6757;
  --line:#e1e8ed;
  --bg:#ffffff;
  --bg-soft:#f7f9fb;
  --radius:14px;
  --container:1120px;
  --read:748px;
  --shadow:0 10px 30px rgba(25,42,61,.07);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:16px/1.85 -apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Source Han Sans SC","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
::selection{background:#ffe3c8;}

.wrap{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ===== 顶栏 ===== */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px;}
.brand{display:flex;align-items:center;gap:9px;font-size:19px;font-weight:700;letter-spacing:.6px;}
.brand .dot{width:9px;height:9px;border-radius:50%;background:var(--accent);}
.nav{display:flex;align-items:center;gap:26px;font-size:14.5px;color:var(--muted);white-space:nowrap;}
.nav a{padding:4px 0;border-bottom:2px solid transparent;transition:color .18s,border-color .18s;}
.nav a:hover{color:var(--ink);}
.nav a.on{color:var(--ink);border-bottom-color:var(--accent);}
.btn-pill{
  display:inline-block;padding:8px 18px;border-radius:50px;
  background:var(--accent);color:#fff;font-size:13.5px;font-weight:600;letter-spacing:.3px;
  transition:background .18s,transform .18s;
}
.btn-pill:hover{background:var(--accent-deep);transform:translateY(-1px);}
.nav .btn-pill{color:#fff;}

/* ===== 首页 Hero ===== */
.hero{padding:72px 0 46px;border-bottom:1px solid var(--line);}
.kicker{
  display:inline-block;font-size:12px;letter-spacing:2px;text-transform:uppercase;
  color:var(--accent-deep);font-weight:700;margin-bottom:16px;
}
.hero h1{font-size:38px;line-height:1.34;font-weight:700;letter-spacing:-.6px;margin:0 0 16px;max-width:820px;}
.hero p{color:var(--ink-soft);font-size:16px;max-width:660px;margin:0;}
.chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.chip{
  display:inline-block;padding:6px 14px;border:1px solid var(--line);border-radius:50px;
  font-size:13px;color:var(--ink-soft);background:#fff;transition:border-color .18s,color .18s;
}
.chip:hover{border-color:var(--accent);color:var(--accent-deep);}

/* ===== 文章列表 ===== */
.post-list{padding:20px 0 80px;}
.list-head{display:flex;align-items:baseline;justify-content:space-between;padding:26px 0 6px;}
.list-head h2{font-size:15px;font-weight:700;letter-spacing:1.5px;text-transform:uppercase;margin:0;color:var(--ink);}
.list-head span{font-size:13px;color:var(--muted);}
.post-item{
  display:block;padding:30px 0;border-bottom:1px solid var(--line);
  transition:padding-left .2s ease;
}
.post-item:hover{padding-left:6px;}
.post-item .meta{display:flex;align-items:center;gap:14px;font-size:12.5px;color:var(--muted);margin-bottom:9px;}
.post-item .meta .cat{color:var(--accent-deep);font-weight:700;letter-spacing:.5px;}
.post-item h3{font-size:24px;line-height:1.45;font-weight:700;letter-spacing:-.3px;margin:0 0 10px;}
.post-item p{color:var(--ink-soft);font-size:14.5px;margin:0 0 12px;max-width:800px;}
.post-item .more{font-size:13.5px;color:var(--accent-deep);font-weight:600;}

/* ===== 文章页 ===== */
.article-head{padding:34px 0 0;}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:7px;font-size:12.5px;color:var(--muted);}
.breadcrumb .sep{color:#c8d1d9;}
.article-title{font-size:36px;line-height:1.36;font-weight:700;letter-spacing:-.6px;margin:14px 0 16px;max-width:900px;}
.article-lead{font-size:16.5px;line-height:1.8;color:var(--ink-soft);margin:0 0 20px;max-width:820px;}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;
  font-size:13px;color:var(--muted);padding-bottom:22px;border-bottom:1px solid var(--line);
}
.article-meta .tag-cat{color:var(--accent-deep);font-weight:700;}
.article-meta .divider{width:1px;height:13px;background:var(--line);}

.article-body{
  display:grid;
  grid-template-columns:minmax(0,var(--read)) 268px;
  gap:60px;
  align-items:start;
  padding:34px 0 70px;
}

/* 正文排版 */
.prose{font-size:16px;line-height:1.9;}
.prose p{margin:0 0 22px;}
.prose h2{
  font-size:26px;line-height:1.5;font-weight:700;letter-spacing:-.4px;
  margin:46px 0 18px;padding-top:8px;
}
.prose h2:first-child{margin-top:6px;}
.prose h2 .num{color:var(--accent);margin-right:10px;font-weight:700;}
.prose h3{font-size:18px;font-weight:700;margin:30px 0 12px;letter-spacing:-.2px;}
.prose h3 .num{color:var(--accent);margin-right:8px;}
.prose strong{font-weight:700;}
.prose a{color:var(--accent-deep);border-bottom:1px solid rgba(239,125,21,.35);}
.prose a:hover{border-bottom-color:var(--accent-deep);}
.prose ul,.prose ol{margin:0 0 24px;padding-left:22px;}
.prose li{margin:9px 0;}
.prose blockquote{
  margin:26px 0;padding:4px 0 4px 20px;border-left:3px solid var(--accent);
  color:var(--ink-soft);font-style:normal;background:transparent;
}
.prose code{
  background:var(--bg-soft);border:1px solid var(--line);border-radius:5px;
  padding:1px 6px;font-size:14px;font-family:ui-monospace,SFMono-Regular,Consolas,monospace;
  word-break:break-all;
}
.prose pre{
  background:#192a3d;color:#e8eef4;border-radius:10px;padding:16px 18px;overflow-x:auto;
  font-size:13.5px;line-height:1.7;margin:22px 0;
}
.prose pre code{background:none;border:none;color:inherit;padding:0;}

/* 提示块 */
.note{
  display:flex;gap:12px;background:var(--bg-soft);border-left:3px solid var(--accent);
  border-radius:0 10px 10px 0;padding:14px 18px;margin:24px 0;font-size:15px;line-height:1.8;
}
.note.warn{background:#fdf5f3;border-left-color:var(--accent-2);}
.note .ico{flex:0 0 auto;font-size:16px;line-height:1.8;}

/* 表格 */
.table-wrap{overflow-x:auto;margin:26px 0;border:1px solid var(--line);border-radius:10px;}
table{width:100%;border-collapse:collapse;font-size:14.5px;}
th{background:var(--bg-soft);text-align:left;font-weight:700;padding:12px 16px;border-bottom:1px solid var(--line);white-space:nowrap;}
td{padding:12px 16px;border-bottom:1px solid var(--line);vertical-align:top;line-height:1.7;}
tr:last-child td{border-bottom:none;}

/* FAQ */
.faq{margin:26px 0 34px;border-top:1px solid var(--line);}
.faq details{border-bottom:1px solid var(--line);padding:16px 0;}
.faq details summary{
  cursor:pointer;font-size:15.5px;font-weight:600;line-height:1.7;list-style:none;
  display:flex;justify-content:space-between;gap:16px;
}
.faq details summary::-webkit-details-marker{display:none;}
.faq details summary::after{content:"+";color:var(--accent);font-weight:700;font-size:18px;line-height:1.4;}
.faq details[open] summary::after{content:"–";}
.faq details p{margin:10px 0 2px;font-size:14.5px;color:var(--ink-soft);line-height:1.85;}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:9px;align-items:center;margin:8px 0 34px;}
.tag-row .label{font-size:12.5px;color:var(--muted);letter-spacing:1px;margin-right:4px;}
.tag{
  display:inline-block;padding:5px 12px;border-radius:50px;background:var(--bg-soft);
  border:1px solid var(--line);font-size:12.5px;color:var(--ink-soft);
}
.tag:hover{border-color:var(--accent);color:var(--accent-deep);}

/* 上一篇/下一篇 */
.prevnext{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:8px 0 40px;}
.prevnext a{
  display:block;border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;
  transition:box-shadow .2s,border-color .2s;
}
.prevnext a:hover{border-color:#f7d3b1;box-shadow:var(--shadow);}
.prevnext .dir{font-size:12px;color:var(--muted);letter-spacing:1px;margin-bottom:6px;}
.prevnext .t{font-size:14.5px;font-weight:600;line-height:1.6;}

/* 右侧栏 */
.side{position:sticky;top:88px;display:flex;flex-direction:column;gap:28px;}
.toc-title{font-size:12px;font-weight:700;letter-spacing:1.6px;color:var(--muted);margin-bottom:12px;}
.toc{border-left:2px solid var(--line);padding-left:16px;font-size:13.5px;line-height:1.7;}
.toc a{display:block;padding:4px 0;color:var(--muted);transition:color .18s;}
.toc a:hover{color:var(--accent-deep);}

.author{
  border:1px solid var(--line);border-radius:var(--radius);padding:18px;text-align:left;
  background:#fff;
}
.avatar{
  width:44px;height:44px;border-radius:50%;background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;margin-bottom:12px;
}
.author .name{font-size:14.5px;font-weight:700;margin-bottom:4px;}
.author .desc{font-size:12.5px;color:var(--muted);line-height:1.7;}

/* 相关文章 */
.related{padding:0 0 80px;}
.related h2{font-size:14px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;margin:0 0 20px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rcard{
  border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:#fff;
  transition:box-shadow .2s,border-color .2s,transform .2s;
}
.rcard:hover{border-color:#f7d3b1;box-shadow:var(--shadow);transform:translateY(-2px);}
.rcard .cat{font-size:12px;color:var(--accent-deep);font-weight:700;letter-spacing:.5px;}
.rcard h3{font-size:15.5px;font-weight:700;line-height:1.6;margin:10px 0 10px;}
.rcard .date{font-size:12.5px;color:var(--muted);}

/* ===== 关于页 ===== */
.page-head{padding:56px 0 30px;border-bottom:1px solid var(--line);}
.page-head h1{font-size:34px;font-weight:700;letter-spacing:-.5px;margin:0 0 12px;}
.page-head p{color:var(--ink-soft);margin:0;max-width:700px;}

/* ===== 页脚 ===== */
.site-footer{border-top:1px solid var(--line);padding:40px 0 56px;margin-top:10px;}
.footer-inner{display:flex;flex-wrap:wrap;gap:20px;align-items:flex-start;justify-content:space-between;}
.footer-brand{font-size:15px;font-weight:700;letter-spacing:.5px;}
.footer-brand .dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:7px;vertical-align:2px;}
.footer-note{font-size:13px;color:var(--muted);line-height:1.9;margin-top:8px;max-width:420px;}
.footer-links{display:flex;gap:22px;font-size:13.5px;color:var(--muted);}
.footer-links a:hover{color:var(--ink);}
.copyright{font-size:12.5px;color:#9aa6b1;margin-top:26px;}

/* ===== 栏目分区（首页三条主线） ===== */
.topic{padding:34px 0 10px;border-bottom:1px solid var(--line);}
.topic-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:8px 16px;margin-bottom:4px;}
.topic-head .left{max-width:760px;}
.topic-head h2{font-size:21px;font-weight:700;letter-spacing:-.3px;margin:0 0 4px;}
.topic-head .sub{font-size:13.5px;color:var(--muted);margin:0;line-height:1.7;}
.topic-head .all{font-size:13px;color:var(--accent-deep);font-weight:600;white-space:nowrap;}
.topic .post-item:last-child{border-bottom:none;}

/* ===== 文内推荐块 / 邀请码 ===== */
.cta-box{
  border:1px solid #ffd9b8;border-radius:12px;padding:18px 20px;margin:30px 0;
  background:linear-gradient(180deg,#fff8f1,#ffffff);
}
.cta-box .k{font-size:11.5px;letter-spacing:1.6px;color:var(--accent-deep);font-weight:700;}
.cta-box h4{font-size:17px;font-weight:700;margin:6px 0 8px;letter-spacing:-.2px;}
.cta-box p{font-size:14px;color:var(--ink-soft);margin:0 0 12px;line-height:1.8;}
.cta-box .code-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;}
.cta-box .code{
  font-family:ui-monospace,SFMono-Regular,Consolas,monospace;background:#192a3d;color:#ffd9b8;
  padding:7px 12px;border-radius:6px;font-size:14px;letter-spacing:1.2px;
}

/* 待填占位（发布前请替换掉） */
.placeholder{
  background:#fff6e8;border:1px dashed #f0bd83;border-radius:4px;
  padding:1px 6px;color:#a8560f;font-size:13px;white-space:nowrap;
}

/* 文末收尾 */
.end-note{border-top:1px solid var(--line);padding-top:22px;margin-top:36px;font-size:14px;color:var(--muted);line-height:1.9;}

/* ===== 响应式 ===== */
@media (max-width:960px){
  .article-body{grid-template-columns:1fr;gap:0;}
  .side{position:static;padding-bottom:8px;}
  .related-grid{grid-template-columns:1fr;}
  /* 窄屏去掉文末目录，正文之后直接到作者卡 */
  .toc-box{display:none;}
}
@media (max-width:640px){
  .wrap{padding:0 18px;}
  .nav{gap:14px;font-size:12.5px;white-space:normal;flex-wrap:wrap;}
  .nav .btn-pill{display:none;}
  .hero{padding:46px 0 34px;}
  .hero h1{font-size:27px;}
  .article-title{font-size:25px;}
  .prose h2{font-size:22px;}
  .post-item h3{font-size:20px;}
  .prevnext{grid-template-columns:1fr;}
  .article-meta{gap:8px 12px;}
  /* 表格收紧，占位块允许换行，避免长码撑破屏幕 */
  table{font-size:13px;}
  th,td{padding:9px 10px;}
  .placeholder{white-space:normal;font-size:12.5px;}
  .cta-box .code{white-space:normal;word-break:break-word;}
  .cta-box{padding:20px;}
}