/* hfm- 站点样式 · 明亮霜感 + 靛蓝 + 信号橙 · 原创骨架 */
:root{
  --bg:#F7F9FC;
  --ink:#0E1726;
  --ink-soft:#33415A;
  --muted:#5B6678;
  --primary:#4338CA;
  --primary-d:#312E81;
  --primary-soft:#EEF0FF;
  --accent:#F97316;
  --accent-d:#C2410C;
  --surface:#FFFFFF;
  --surface-2:#EEF2F8;
  --border:#E2E8F0;
  --border-strong:#CBD5E1;
  --ok:#0E9F6E;
  --shadow:0 10px 30px rgba(15,23,42,.07);
  --shadow-sm:0 4px 14px rgba(15,23,42,.06);
  --radius:16px;
  --radius-sm:10px;
  --nav-h:64px;
  --h2-inset:16px;        /* 文章/列表/产品页面包屑与 H2 左缘对齐 */
  --page-inset:40px;      /* 页面卡片内边距（页面面包屑对齐用） */
  --maxw:1180px;
  --reading:820px;
  --mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--bg);color:var(--ink);
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased;
}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-d)}
img{max-width:100%;height:auto}
h1,h2,h3,h4{color:var(--ink);line-height:1.3;font-weight:700}
h1{font-size:30px;margin:0 0 14px}
h2{font-size:23px;margin:32px 0 12px;padding-bottom:8px;border-bottom:2px solid var(--surface-2)}
h3{font-size:19px;margin:24px 0 10px}
p{margin:0 0 14px}
ul,ol{padding-left:22px;margin:0 0 14px}
li{margin:6px 0}
blockquote{
  margin:16px 0;padding:12px 16px;background:var(--primary-soft);
  border-left:4px solid var(--primary);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:var(--ink-soft)
}
code{font-family:var(--mono);background:var(--surface-2);padding:2px 6px;border-radius:6px;font-size:14px}
hr{border:0;border-top:1px solid var(--border);margin:24px 0}

/* ===== 顶部固定导航 ===== */
.hfm-nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:50;
  background:rgba(255,255,255,.86);backdrop-filter:saturate(160%) blur(10px);
  border-bottom:1px solid var(--border)}
.hfm-nav-inner{max-width:var(--maxw);margin:0 auto;height:100%;
  display:flex;align-items:center;gap:18px;padding:0 20px}
.hfm-brand{display:flex;align-items:center;gap:10px;font-weight:800;color:var(--ink);white-space:nowrap}
.hfm-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;
  background:linear-gradient(135deg,var(--primary),var(--accent));color:#fff;font-size:13px;font-weight:800}
.hfm-brand-text{font-size:15px;letter-spacing:.2px}
.hfm-nav-links{margin-left:auto;display:flex;gap:4px;flex-wrap:wrap}
.hfm-nav-links a{padding:8px 12px;border-radius:9px;color:var(--ink-soft);font-size:14px;font-weight:600}
.hfm-nav-links a:hover{background:var(--primary-soft);color:var(--primary)}
.hfm-nav-toggle{display:none;margin-left:auto;background:var(--surface);border:1px solid var(--border);
  border-radius:10px;width:42px;height:38px;font-size:20px;color:var(--ink);cursor:pointer}
.hfm-nav-sub{display:none;flex-direction:column;background:var(--surface);border-bottom:1px solid var(--border);
  max-width:var(--maxw);margin:0 auto;padding:8px 20px}
.hfm-nav-open .hfm-nav-sub{display:flex}
.hfm-nav-sub a{padding:10px 6px;color:var(--ink-soft);font-weight:600;border-bottom:1px solid var(--surface-2)}
.hfm-nav-sub a:last-child{border-bottom:0}

/* ===== 容器与面包屑 ===== */
.hfm-container{max-width:var(--maxw);margin:0 auto;padding:calc(var(--nav-h) + 24px) 20px 60px}
.hfm-breadcrumb{padding:0 var(--h2-inset) 14px}
.hfm-breadcrumb nav ol,.hfm-page-breadcrumb nav ol{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0;font-size:13.5px;color:var(--muted)}
.hfm-breadcrumb li,.hfm-page-breadcrumb li{display:flex;align-items:center;gap:8px}
.hfm-breadcrumb li:not(:last-child)::after,.hfm-page-breadcrumb li:not(:last-child)::after{content:"›";color:var(--border-strong)}
.hfm-breadcrumb a,.hfm-page-breadcrumb a{color:var(--muted)}
.hfm-breadcrumb a:hover,.hfm-page-breadcrumb a:hover{color:var(--primary)}

/* ===== 详情页栅格：内容(1fr) + TOC(240) ===== */
.hfm-layout{display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:36px;align-items:start}
.hfm-content-main{max-width:var(--reading);width:100%}
.hfm-content-main h1{margin-left:var(--h2-inset)}
.hfm-content-main h2,.hfm-content-main h3,.hfm-content-main p,
.hfm-content-main ul,.hfm-content-main ol,.hfm-content-main blockquote,
.hfm-content-main table,.hfm-content-main .hfm-tag-row,.hfm-content-main .hfm-update{margin-left:var(--h2-inset)}
.hfm-tag-row{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px var(--h2-inset)}
.hfm-tag{display:inline-block;background:var(--primary-soft);color:var(--primary-d);
  font-size:12.5px;font-weight:600;padding:3px 10px;border-radius:999px}
.hfm-update{font-size:13px;color:var(--muted);margin-bottom:18px}
.hfm-update time{font-variant-numeric:tabular-nums}

/* ===== 右侧 TOC（sticky，非 fixed）===== */
.hfm-toc-aside{position:sticky;top:calc(var(--nav-h) + 18px);align-self:start}
.hfm-toc-panel{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);
  box-shadow:var(--shadow-sm);overflow:hidden}
.hfm-toc-panel>summary{cursor:pointer;list-style:none;padding:12px 14px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;background:var(--surface-2)}
.hfm-toc-panel>summary::-webkit-details-marker{display:none}
.hfm-toc-panel>summary::after{content:"▾";color:var(--muted);transition:transform .2s}
.hfm-toc-panel[open]>summary::after{transform:rotate(180deg)}
.hfm-toc-panel ol{list-style:none;margin:0;padding:8px 6px 12px}
.hfm-toc-panel li{padding:4px 10px}
.hfm-toc-panel a{display:block;font-size:13.5px;color:var(--ink-soft);border-left:2px solid transparent;padding-left:8px}
.hfm-toc-panel a:hover,.hfm-toc-panel a:target{border-left-color:var(--accent);color:var(--primary)}

/* ===== 列表/分类页栅格：侧栏(240) + 内容(1fr) ===== */
.hfm-list-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start}
.hfm-cat-side{position:sticky;top:calc(var(--nav-h) + 18px)}
.hfm-cat-panel{border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface);
  box-shadow:var(--shadow-sm);overflow:hidden}
.hfm-cat-panel>summary{cursor:pointer;list-style:none;padding:12px 14px;font-weight:700;color:var(--ink);
  display:flex;align-items:center;justify-content:space-between;background:var(--surface-2)}
.hfm-cat-panel>summary::-webkit-details-marker{display:none}
.hfm-cat-panel>summary::after{content:"▾";color:var(--muted);transition:transform .2s}
.hfm-cat-panel[open]>summary::after{transform:rotate(180deg)}
.hfm-category-list{list-style:none;margin:0;padding:6px}
.hfm-category-list li{margin:2px 0}
.hfm-category-list a{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;border-radius:8px;
  color:var(--ink-soft);font-weight:600;font-size:14.5px}
.hfm-category-list a:hover,.hfm-category-list a.is-active{background:var(--primary-soft);color:var(--primary)}
.hfm-cat-count{font-size:12px;color:var(--muted);background:var(--surface-2);border-radius:999px;padding:1px 8px}

.hfm-cat-content{min-width:0}
.hfm-list-title{font-size:26px;margin:0 0 6px}
.hfm-list-intro{color:var(--muted);margin:0 0 22px;max-width:var(--reading)}
.hfm-item-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.hfm-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px 20px;box-shadow:var(--shadow-sm);transition:transform .15s,border-color .15s}
.hfm-item:hover{transform:translateY(-2px);border-color:var(--primary)}
.hfm-item-title{font-size:17.5px;font-weight:700;color:var(--ink)}
.hfm-item-meta{display:inline-block;font-size:12px;color:var(--primary-d);background:var(--primary-soft);
  border-radius:999px;padding:2px 10px;margin:6px 0}
.hfm-item-summary{color:var(--muted);margin:8px 0 0;font-size:14.5px}

/* ===== 表格（覆盖裸 table 与 table.hfm-spec）===== */
.hfm-content-main table,table.hfm-spec{border-collapse:collapse;width:100%;margin:16px 0 16px var(--h2-inset);
  font-size:14.5px;box-shadow:var(--shadow-sm);border:1px solid var(--border-strong);border-radius:var(--radius-sm);overflow:hidden}
.hfm-content-main table th,.hfm-content-main table td,table.hfm-spec th,table.hfm-spec td{
  border:1px solid var(--border-strong);padding:9px 12px;text-align:left;vertical-align:top}
.hfm-content-main table th,table.hfm-spec th{background:var(--primary);color:#fff;font-weight:700}
.hfm-content-main table tr:nth-child(even) td,table.hfm-spec tr:nth-child(even) td{background:var(--surface-2)}

/* ===== FAQ（裸 details）===== */
.hfm-faq{margin:26px 0 0 var(--h2-inset);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;background:var(--surface)}
.hfm-faq-title{font-size:20px;margin:0;padding:14px 18px;background:var(--surface-2)}
.hfm-faq details{border-top:1px solid var(--border)}
.hfm-faq details summary{cursor:pointer;padding:13px 18px;font-weight:600;color:var(--ink);list-style:none}
.hfm-faq details summary::-webkit-details-marker{display:none}
.hfm-faq details summary::before{content:"+";color:var(--primary);font-weight:800;margin-right:10px}
.hfm-faq details[open] summary::before{content:"−"}
.hfm-faq-a{padding:0 18px 14px;color:var(--ink-soft)}

/* ===== 相关阅读/产品 ===== */
.hfm-related{margin:26px 0 0 var(--h2-inset)}
.hfm-related-title{font-size:20px}
.hfm-related ul{list-style:none;padding:0;display:grid;gap:10px}
.hfm-related li{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 16px}
.hfm-related a{font-weight:700}
.hfm-rel-why{display:block;color:var(--muted);font-size:13.5px;margin-top:4px}

/* ===== 悬浮胶囊 ===== */
.hfm-float{position:fixed;right:18px;top:50%;transform:translateY(-50%);z-index:60;
  display:flex;flex-direction:column;gap:10px}
.hfm-float button,.hfm-float a{width:54px;height:54px;border:0;cursor:pointer;border-radius:18px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  color:#fff;font-size:11px;font-weight:700;
  background:linear-gradient(160deg,var(--primary),var(--accent));box-shadow:0 8px 22px rgba(67,56,202,.35);
  text-decoration:none;transition:transform .15s}
.hfm-float button:hover,.hfm-float a:hover{transform:scale(1.06);color:#fff}
.hfm-float-ico{font-size:18px;line-height:1}
.hfm-float-card{position:fixed;right:84px;top:50%;transform:translateY(-50%);z-index:61;
  display:none;padding:8px;background:#fff;border-radius:14px;box-shadow:0 18px 50px rgba(15,23,42,.28)}
.hfm-float-card.show{display:block}
.hfm-float-card img{display:block;width:300px;height:500px;object-fit:contain;border-radius:8px}

/* ===== 页脚 ===== */
.hfm-footer{background:var(--ink);color:#C7D0E0;margin-top:40px}
.hfm-footer-inner{max-width:var(--maxw);margin:0 auto;padding:42px 20px 24px;display:grid;
  grid-template-columns:1.6fr 1fr 1fr;gap:30px}
.hfm-foot-brand{font-weight:800;color:#fff;font-size:17px;margin-bottom:10px}
.hfm-foot-col h4{color:#fff;font-size:14px;margin:0 0 12px;letter-spacing:.5px}
.hfm-foot-col a{display:block;color:#AEB9CC;padding:5px 0;font-size:14px}
.hfm-foot-col a:hover{color:#fff}
.hfm-footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:16px 20px;text-align:center;
  font-size:13px;color:#8392A8}

/* ===== 首页 ===== */
.hfm-hero{background:radial-gradient(1200px 400px at 70% -10%,rgba(249,115,22,.16),transparent),
  linear-gradient(180deg,#fff,#F2F4FA);border-bottom:1px solid var(--border)}
.hfm-hero-inner{max-width:var(--maxw);margin:0 auto;padding:calc(var(--nav-h) + 56px) 20px 56px}
.hfm-hero-kicker{color:var(--primary);font-weight:800;letter-spacing:3px;font-size:13px}
.hfm-hero h1{font-size:42px;margin:12px 0 16px;max-width:760px}
.hfm-hero p{color:var(--ink-soft);font-size:17px;max-width:720px}
.hfm-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:26px}
.hfm-btn{display:inline-flex;align-items:center;padding:12px 22px;border-radius:12px;font-weight:700;font-size:15px}
.hfm-btn-primary{background:var(--primary);color:#fff}
.hfm-btn-primary:hover{background:var(--primary-d);color:#fff}
.hfm-btn-ghost{background:var(--surface);color:var(--primary);border:1px solid var(--border)}
.hfm-btn-ghost:hover{background:var(--primary-soft);color:var(--primary-d)}
.hfm-stats{max-width:var(--maxw);margin:-30px auto 0;padding:0 20px;display:grid;
  grid-template-columns:repeat(5,1fr);gap:14px}
.hfm-stat{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:18px;text-align:center;box-shadow:var(--shadow)}
.hfm-stat b{display:block;font-size:20px;color:var(--primary)}
.hfm-stat span{font-size:13px;color:var(--muted)}
.hfm-section{max-width:var(--maxw);margin:0 auto;padding:54px 20px}
.hfm-section-head{margin-bottom:26px}
.hfm-kicker{color:var(--accent);font-weight:800;letter-spacing:2px;font-size:12.5px}
.hfm-section-head h2{margin:8px 0 8px;font-size:28px;border:0;padding:0}
.hfm-section-head p{color:var(--muted);max-width:680px}
.hfm-card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:18px}
.hfm-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);transition:transform .15s,border-color .15s}
.hfm-card:hover{transform:translateY(-3px);border-color:var(--primary)}
.hfm-card h3{font-size:18px;margin:0 0 8px}
.hfm-card h3 a{color:var(--ink)}
.hfm-card p{color:var(--muted);font-size:14.5px;margin:0}

/* ===== 页面（about/privacy/contact/services/solutions）===== */
.hfm-page-wrap{max-width:var(--maxw);margin:0 auto;padding:calc(var(--nav-h) + 24px) 20px 60px}
.hfm-page-breadcrumb{padding:0 var(--page-inset) 14px}
.hfm-page-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:var(--page-inset)}
.hfm-page-card h1{margin-top:0}
.hfm-page-card h2,.hfm-page-card h3,.hfm-page-card p,.hfm-page-card ul,.hfm-page-card ol,
.hfm-page-card blockquote,.hfm-page-card table{margin-left:0}
.hfm-page-card table,.hfm-content-main table{border-collapse:collapse;width:100%;margin:16px 0;
  border:1px solid var(--border-strong);border-radius:var(--radius-sm);overflow:hidden}
.hfm-page-card th,.hfm-page-card td{border:1px solid var(--border-strong);padding:9px 12px}
.hfm-page-card th{background:var(--primary);color:#fff}

/* ===== 归档 ===== */
.hfm-archive-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px;margin-top:18px}
.hfm-archive-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:16px 18px;box-shadow:var(--shadow-sm)}
.hfm-archive-item h3{font-size:16px;margin:0 0 6px}
.hfm-archive-item a{color:var(--ink)}
.hfm-archive-item p{color:var(--muted);font-size:13.5px;margin:0}
.hfm-archive-group{margin-top:34px}
.hfm-archive-group h2{font-size:22px;border-bottom:2px solid var(--surface-2);padding-bottom:8px}

/* ===== 404 ===== */
.hfm-error{max-width:560px;margin:0 auto;text-align:center;padding:80px 20px}
.hfm-error h1{font-size:64px;color:var(--primary)}
.hfm-error p{color:var(--muted)}

/* ===== 响应式：≤1024 折叠 ===== */
@media (max-width:1024px){
  .hfm-nav-links{display:none}
  .hfm-nav-toggle{display:block}
  .hfm-layout{grid-template-columns:1fr;gap:20px}
  .hfm-toc-aside{position:static;top:auto;order:2}
  .hfm-list-layout{grid-template-columns:1fr;gap:18px}
  .hfm-cat-side{position:static;top:auto}
  .hfm-stats{grid-template-columns:repeat(2,1fr)}
  .hfm-hero h1{font-size:32px}
  .hfm-footer-inner{grid-template-columns:1fr}
  /* 面包屑与正文左缘继续保持对齐（仅收窄 gutter） */
  .hfm-content-main h1,.hfm-content-main h2,.hfm-content-main h3,.hfm-content-main p,
  .hfm-content-main ul,.hfm-content-main ol,.hfm-content-main blockquote,
  .hfm-content-main table,.hfm-content-main .hfm-tag-row,.hfm-content-main .hfm-faq,
  .hfm-content-main .hfm-related{margin-left:0}
  .hfm-breadcrumb{padding-left:0;padding-right:0}
  .hfm-page-breadcrumb{padding-left:20px;padding-right:20px}
  .hfm-page-card{padding:20px}
  .hfm-float{right:10px}
  .hfm-float-card{right:70px}
}
@media (max-width:560px){
  .hfm-stats{grid-template-columns:1fr}
  .hfm-hero h1{font-size:26px}
}