/* 版式「手册」v2_da_handbook：企业手册。深色书脊式页头；首屏扉页（左标题、右信息框、下数字条）紧跟目录（章节号 + 点线 + 锚点）；
   每章顶部一条页眉式标题条（第 N 章 / 手册名），章节号标题，产品按 N.1 / N.2 小节分组。
   所有规则挂在 body.hv4bk2 下，类名前缀 hb-。颜色只用 --v2-* 变量。 */
body.hv4bk2{--hb-dark:var(--v2-foot);--hb-mono:ui-monospace,"SF Mono",Menlo,Consolas,monospace;scroll-behavior:smooth}

/* 页头 */
body.hv4bk2 .sd8q4q{background:var(--hb-dark);border-bottom:3px solid var(--v2-brand)}
body.hv4bk2 .gm3wcg{display:flex;align-items:center;gap:28px;min-height:60px}
body.hv4bk2 .dy6bt6{display:flex;align-items:baseline;gap:12px;margin-right:auto;color:#fff}
body.hv4bk2 .dy6bt6 b{font-size:18px;letter-spacing:.04em}
body.hv4bk2 .dy6bt6 small{font-size:12px;color:var(--v2-footink);letter-spacing:.08em}
body.hv4bk2 .ey3hyr{display:flex;gap:2px;font-size:13px;counter-reset:hbnav}
body.hv4bk2 .ey3hyr a{padding:18px 12px;color:var(--v2-footink);counter-increment:hbnav}
body.hv4bk2 .ey3hyr a::before{content:counter(hbnav,decimal-leading-zero);margin-right:6px;font:11px var(--hb-mono);color:color-mix(in srgb,var(--v2-footink) 60%,transparent)}
body.hv4bk2 .ey3hyr a:hover,body.hv4bk2 .ey3hyr a.aqdv2x{color:#fff;background:color-mix(in srgb,#fff 8%,transparent)}
body.hv4bk2 .ey3hyr a.aqdv2x::before{color:var(--v2-brand2)}

/* 首屏：扉页 */
body.hv4bk2 .e7dunm{padding:56px 0 0;background:var(--v2-white)}
body.hv4bk2 .ub5jf8{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px;align-items:start}
body.hv4bk2 .agjcct{display:inline-flex;gap:12px;margin:0 0 18px;padding:4px 10px;background:var(--v2-ink);color:var(--v2-white);font-size:12px;letter-spacing:.1em}
body.hv4bk2 .agjcct span{font-family:var(--hb-mono);color:var(--v2-brand2)}
body.hv4bk2 .e7dunm h1{margin:0;font-size:38px;line-height:1.25;font-weight:800;color:var(--v2-ink)}
body.hv4bk2 .a7g2ae{margin:14px 0 0;font-size:16px;font-weight:600;color:var(--v2-ink)}
body.hv4bk2 .aq4y5e{margin:10px 0 0;font-size:15px;color:var(--v2-muted)}
body.hv4bk2 .grswnn{display:flex;flex-wrap:wrap;gap:0;margin:18px 0 0;padding:0;list-style:none;font-size:12px}
body.hv4bk2 .grswnn li{padding:3px 10px;border:1px solid var(--v2-line);margin:0 -1px -1px 0;color:var(--v2-muted)}
body.hv4bk2 .g8t939{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
body.hv4bk2 .dw4jrr{background:var(--v2-paper);border-top:4px solid var(--v2-ink)}
body.hv4bk2 .vz9q5g{margin:0;padding:10px 18px;font-size:12px;letter-spacing:.12em;color:var(--v2-muted);border-bottom:1px solid var(--v2-line)}

/* 身份信息 */
body.hv4bk2 .djykpc{margin:0}
body.hv4bk2 .djykpc dt,body.hv4bk2 .djykpc dd{margin:0}
body.hv4bk2 .tn6c2x .a383cb{display:grid;grid-template-columns:84px 1fr;gap:12px;padding:10px 18px;border-bottom:1px solid var(--v2-line);font-size:14px}
body.hv4bk2 .tn6c2x .a383cb:last-child{border-bottom:0}
body.hv4bk2 .tn6c2x dt,body.hv4bk2 .wus2nv dt{color:var(--v2-muted);font-size:13px}
body.hv4bk2 .tn6c2x dd,body.hv4bk2 .wus2nv dd{color:var(--v2-ink)}
body.hv4bk2 .ahkd6u{font-weight:800;color:var(--v2-brand)}
body.hv4bk2 .tn6c2x .ahkd6u{font-size:18px}
body.hv4bk2 .wus2nv{border:1px solid var(--v2-line)}
body.hv4bk2 .wus2nv .a383cb{display:grid;grid-template-columns:96px 1fr;border-bottom:1px solid var(--v2-line);font-size:14px}
body.hv4bk2 .wus2nv .a383cb:last-child{border-bottom:0}
body.hv4bk2 .wus2nv dt{padding:10px 14px;background:var(--v2-paper);border-right:1px solid var(--v2-line)}
body.hv4bk2 .wus2nv dd{padding:10px 14px}

/* 关键数字条 */
body.hv4bk2 .bq5kcq{display:grid;grid-template-columns:repeat(auto-fit,minmax(0,1fr));margin:40px 0 0;padding:0;list-style:none;border-top:1px solid var(--v2-ink);border-bottom:1px solid var(--v2-ink)}
body.hv4bk2 .bq5kcq .uu9y25{display:flex;align-items:baseline;gap:10px;padding:16px 20px;border-left:1px solid var(--v2-line)}
body.hv4bk2 .bq5kcq .uu9y25:first-child{border-left:0;padding-left:0}
body.hv4bk2 .bq5kcq b{font:700 34px/1 var(--hb-mono);color:var(--v2-ink)}
body.hv4bk2 .bq5kcq span{font-size:13px;color:var(--v2-muted)}

/* 目录 */
body.hv4bk2 .k629h7{padding:40px 0 56px;background:var(--v2-white);border-bottom:1px solid var(--v2-line)}
body.hv4bk2 .ysrt5m{display:grid;grid-template-columns:200px minmax(0,1fr);gap:40px}
body.hv4bk2 .njz5p7{margin:0;font-size:26px;font-weight:800;color:var(--v2-ink);line-height:1.2}
body.hv4bk2 .njz5p7 small{display:block;margin-top:6px;font:12px var(--hb-mono);letter-spacing:.2em;color:var(--v2-brand)}
body.hv4bk2 .tpvtzq{display:grid;grid-template-columns:1fr 1fr;gap:0 48px;margin:0;padding:0;list-style:none}
body.hv4bk2 .tpvtzq a{display:flex;align-items:baseline;gap:12px;padding:11px 0;border-bottom:1px solid var(--v2-line);color:var(--v2-ink)}
body.hv4bk2 .tpvtzq b{font:700 14px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .tpvtzq span{font-size:15px;font-weight:600}
body.hv4bk2 .tpvtzq i{flex:1;border-bottom:1px dotted var(--v2-muted);transform:translateY(-4px)}
body.hv4bk2 .tpvtzq small{font:11px var(--hb-mono);letter-spacing:.1em;color:var(--v2-muted)}
body.hv4bk2 .tpvtzq a:hover span{color:var(--v2-brand)}

/* 章 */
body.hv4bk2 .jwgge4{padding:0 0 72px;background:var(--v2-white);scroll-margin-top:8px}
body.hv4bk2 .jwgge4:nth-of-type(even){background:var(--v2-white)}
body.hv4bk2 .ndpx6b{margin:0 0 44px;background:var(--v2-paper);border-top:1px solid var(--v2-line);border-bottom:2px solid var(--v2-brand)}
body.hv4bk2 .ndpx6b>span{display:flex;justify-content:space-between;gap:16px;padding-top:9px;padding-bottom:9px;font-size:12px}
body.hv4bk2 .ndpx6b b{font-family:var(--hb-mono);letter-spacing:.1em;color:var(--v2-brand)}
body.hv4bk2 .ndpx6b em{font-style:normal;color:var(--v2-muted);letter-spacing:.08em}
body.hv4bk2 .c4ssuw{display:flex;align-items:baseline;gap:16px;margin:0 0 32px;font-size:30px;font-weight:800;color:var(--v2-ink)}
body.hv4bk2 .c4ssuw b{font:700 30px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .c4ssuw small{margin-left:auto;font-size:13px;font-weight:400;color:var(--v2-muted)}
body.hv4bk2 .v2jg98{display:flex;align-items:baseline;gap:10px;margin:0 0 16px;padding-bottom:8px;border-bottom:1px solid var(--v2-ink);font-size:17px;font-weight:700;color:var(--v2-ink)}
body.hv4bk2 .v2jg98 b{font:600 14px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .v2jg98 small{margin-left:auto;font-size:12px;font-weight:400;color:var(--v2-muted)}
body.hv4bk2 .hevqz6{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:48px}
body.hv4bk2 .m72v2j p{margin:0 0 14px;font-size:15px;line-height:1.95;color:var(--v2-ink)}
body.hv4bk2 .p9sztd{margin:20px 0 0;font-size:14px}
body.hv4bk2 .p9sztd a{color:var(--v2-brand);font-weight:700}

/* 产品 */
body.hv4bk2 .gnzh46+.gnzh46{margin-top:44px}
body.hv4bk2 .ngb5pf{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:28px 20px;margin:0;padding:0;list-style:none}
body.hv4bk2 .ngb5pf a{display:block;color:var(--v2-ink)}
body.hv4bk2 .ngb5pf img,body.hv4bk2 .hrq89g{width:100%;aspect-ratio:4/3;object-fit:cover;background:var(--v2-paper);border:1px solid var(--v2-line)}
body.hv4bk2 .hrq89g{display:grid;place-items:center;color:var(--v2-muted)}
body.hv4bk2 .ngb5pf small{display:block;margin-top:10px;font:12px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .ngb5pf b{display:block;margin-top:2px;font-size:15px}
body.hv4bk2 .ngb5pf p{margin:4px 0 0;font-size:13px;line-height:1.7;color:var(--v2-muted)}
body.hv4bk2 .ngb5pf a:hover b{color:var(--v2-brand)}

/* 实力 / 流程 / 问答 / 新闻 */
body.hv4bk2 .ywskef{display:grid;grid-template-columns:1fr 1fr;gap:0 40px;margin:0;padding:0;list-style:none}
body.hv4bk2 .ywskef li{display:grid;grid-template-columns:48px 1fr;gap:2px 12px;padding:16px 0;border-top:1px solid var(--v2-line)}
body.hv4bk2 .ywskef small{grid-row:span 2;font:600 14px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .ywskef b{font-size:16px;color:var(--v2-ink)}
body.hv4bk2 .ywskef p{margin:0;font-size:14px;color:var(--v2-muted)}
body.hv4bk2 .u8rcxv{margin:0;padding:0;list-style:none;border:1px solid var(--v2-line)}
body.hv4bk2 .u8rcxv li{display:grid;grid-template-columns:110px 200px 1fr;gap:16px;align-items:baseline;padding:14px 18px;border-bottom:1px solid var(--v2-line)}
body.hv4bk2 .u8rcxv li:last-child{border-bottom:0}
body.hv4bk2 .u8rcxv li:nth-child(odd){background:var(--v2-paper)}
body.hv4bk2 .u8rcxv small{font:600 13px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .u8rcxv b{color:var(--v2-ink)}
body.hv4bk2 .u8rcxv p{margin:0;font-size:14px;color:var(--v2-muted)}
body.hv4bk2 .p2s9bd details{padding:14px 0;border-bottom:1px solid var(--v2-line)}
body.hv4bk2 .p2s9bd summary{cursor:pointer;font-weight:700;color:var(--v2-ink)}
body.hv4bk2 .p2s9bd summary small{margin-right:12px;font:600 13px var(--hb-mono);color:var(--v2-brand)}
body.hv4bk2 .p2s9bd p{margin:8px 0 0 52px;font-size:14px;color:var(--v2-muted)}
body.hv4bk2 .hehdz2{margin:0;padding:0;list-style:none}
body.hv4bk2 .hehdz2 li{display:flex;align-items:baseline;gap:12px;padding:10px 0}
body.hv4bk2 .hehdz2 a{color:var(--v2-ink)}
body.hv4bk2 .hehdz2 i{flex:1;border-bottom:1px dotted var(--v2-muted)}
body.hv4bk2 .hehdz2 time{font:12px var(--hb-mono);color:var(--v2-muted)}

/* 页脚：版权页 */
body.hv4bk2 .brdv2f{background:var(--hb-dark);color:var(--v2-footink);font-size:13px;padding-bottom:36px}
body.hv4bk2 .sgan4x{margin:0 0 36px;border-bottom:2px solid var(--v2-brand);background:color-mix(in srgb,#fff 6%,transparent)}
body.hv4bk2 .sgan4x>span{display:flex;justify-content:space-between;padding-top:9px;padding-bottom:9px;font-size:12px}
body.hv4bk2 .sgan4x b{font-family:var(--hb-mono);letter-spacing:.1em;color:var(--v2-brand2)}
body.hv4bk2 .sgan4x em{font-style:normal}
body.hv4bk2 .k67cdw{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,4fr) minmax(0,2fr);gap:40px}
body.hv4bk2 .sw29np p{margin:6px 0 0}
body.hv4bk2 .brdv2f strong{color:#fff;font-size:15px}
body.hv4bk2 .ecm7bp .a383cb{display:grid;grid-template-columns:72px 1fr;gap:10px;padding:5px 0;border-bottom:1px solid color-mix(in srgb,var(--v2-footink) 20%,transparent)}
body.hv4bk2 .ecm7bp dd{color:#fff}
body.hv4bk2 .ecm7bp .ahkd6u{color:var(--v2-brand2)}
body.hv4bk2 .bpkvkh{display:flex;flex-direction:column;gap:6px;counter-reset:hbft}
body.hv4bk2 .bpkvkh a{counter-increment:hbft}
body.hv4bk2 .bpkvkh a::before{content:counter(hbft,decimal-leading-zero) "  ";font:11px var(--hb-mono);color:var(--v2-brand2)}
body.hv4bk2 .bpkvkh a:hover{color:#fff}

/* 首页引入的通用版块 + 内页组件：直角、等宽编号、页眉式标题条 */
body.hv4bk2 .cfkqr3{padding:56px 0;background:var(--v2-white);border-bottom:0;border-top:2px solid var(--v2-brand)}
body.hv4bk2 .jkrujx{background:var(--v2-paper)}
body.hv4bk2 .st64rd{padding:56px 0 48px;background:var(--v2-white);border-bottom:1px solid var(--v2-line)}
body.hv4bk2 .st64rd h1 em{color:var(--v2-brand);border-bottom-width:2px}
body.hv4bk2 .zpbrc5,body.hv4bk2 .tu6fw8 li{border-radius:0}
body.hv4bk2 .gwe4b3{padding-bottom:12px;border-bottom:1px solid var(--v2-ink);margin-bottom:28px}
body.hv4bk2 .gwe4b3 h1,body.hv4bk2 .gwe4b3 h2{font-size:28px;font-weight:800}
body.hv4bk2 .jy2v32{display:inline-block;padding:2px 8px;background:var(--v2-ink);color:var(--v2-white);font:600 11px var(--hb-mono);letter-spacing:.12em}
body.hv4bk2 .tt26p6{color:var(--v2-brand)}
body.hv4bk2 .c37d2m,body.hv4bk2 .jkxwnq{border-radius:0;box-shadow:none}
body.hv4bk2 .rjrdz7,body.hv4bk2 .p7ebtg img,body.hv4bk2 .r8tabz{border-radius:0}
body.hv4bk2 .b424r7 li,body.hv4bk2 .rc79ts li{border-radius:0}
body.hv4bk2 .b424r7 li::before{border-radius:0;font-family:var(--hb-mono)}
body.hv4bk2 .cuh7p8 details{border-radius:0;border-width:0 0 1px;padding:16px 0;margin:0;background:transparent}
body.hv4bk2 .pmc6dj,body.hv4bk2 .h4kuvs,body.hv4bk2 .vffamm,body.hv4bk2 .y7ba2x a,body.hv4bk2 .f4uhue{border-radius:0}
body.hv4bk2 .kx9qvk{border-radius:0}
body.hv4bk2 a.g5qf9p{color:var(--v2-ink);border-color:var(--v2-ink);background:transparent}
body.hv4bk2 .nm3xfr{border-radius:0;background:var(--v2-ink);color:var(--v2-white);border-left:6px solid var(--v2-brand)}
body.hv4bk2 .nm3xfr .tundcx,body.hv4bk2 .sb9yx2{color:var(--v2-line);opacity:1}
body.hv4bk2 .nm3xfr .kx9qvk{background:var(--v2-brand);color:var(--v2-onbrand)}

@media(max-width:1000px){
  body.hv4bk2 .gm3wcg{flex-wrap:wrap;gap:0;padding-top:10px}
  body.hv4bk2 .ey3hyr{width:100%;overflow-x:auto;white-space:nowrap}
  body.hv4bk2 .ey3hyr a{padding:12px 10px}
  body.hv4bk2 .ub5jf8,body.hv4bk2 .hevqz6,body.hv4bk2 .ysrt5m{grid-template-columns:minmax(0,1fr);gap:28px}
  body.hv4bk2 .bq5kcq{grid-template-columns:1fr 1fr}
  body.hv4bk2 .bq5kcq .uu9y25:nth-child(3){border-left:0;padding-left:0}
  body.hv4bk2 .bq5kcq .uu9y25:nth-child(n+3){border-top:1px solid var(--v2-line)}
  body.hv4bk2 .ngb5pf{grid-template-columns:repeat(3,minmax(0,1fr))}
  body.hv4bk2 .u8rcxv li{grid-template-columns:90px 1fr}
  body.hv4bk2 .u8rcxv p{grid-column:2}
  body.hv4bk2 .k67cdw{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  body.hv4bk2 .sw29np{grid-column:1/-1}
}
@media(max-width:560px){
  body.hv4bk2 .e7dunm{padding-top:32px}
  body.hv4bk2 .e7dunm h1{font-size:28px}
  body.hv4bk2 .bq5kcq .uu9y25{padding:12px 10px 12px 0;border-left:0}
  body.hv4bk2 .bq5kcq b{font-size:26px}
  body.hv4bk2 .tpvtzq{grid-template-columns:minmax(0,1fr)}
  body.hv4bk2 .c4ssuw{font-size:24px;flex-wrap:wrap}
  body.hv4bk2 .c4ssuw b{font-size:24px}
  body.hv4bk2 .ngb5pf{grid-template-columns:repeat(2,minmax(0,1fr));gap:20px 12px}
  body.hv4bk2 .ywskef{grid-template-columns:minmax(0,1fr)}
  body.hv4bk2 .u8rcxv li{grid-template-columns:minmax(0,1fr);gap:2px}
  body.hv4bk2 .u8rcxv p{grid-column:auto}
  body.hv4bk2 .p2s9bd p{margin-left:0}
  body.hv4bk2 .hehdz2 li{flex-direction:column;gap:2px}
  body.hv4bk2 .hehdz2 i{flex:none;border:0}
  body.hv4bk2 .k67cdw{grid-template-columns:minmax(0,1fr)}
  body.hv4bk2 .gwe4b3 h1,body.hv4bk2 .gwe4b3 h2{font-size:22px}
}

/* 内页产品卡图：img 自带 height 属性，统一按 4:3 显示 */
body.hv4bk2 .rjrdz7{height:auto;aspect-ratio:4/3;object-fit:cover}