/* 叮当小宝定制接单 · 文章共用样式（2026-09-27）
   令牌与 /dingzhi/index.html 一致；改设计请两处一起改 */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#FBFBFD; --tint:#F4F5F9; --tint-2:#EEF0F6; --surface:#FFFFFF;
  --line:#E9EAF1; --line-2:#DCDEE9;
  --ink:#0A0C16; --ink-2:#464C63; --ink-3:#858BA1;
  --accent:#4F46E5; --accent-2:#7C5CFF; --accent-3:#A855F7;
  --accent-soft:#F1F0FE;
  --grad:linear-gradient(115deg,#4F46E5 0%,#7C5CFF 52%,#A855F7 100%);
  --ok:#10B981; --warn:#F59E0B;
  --r-xs:8px; --r-sm:12px; --r:16px; --r-lg:22px; --r-xl:28px;
  --sh-1:0 1px 2px rgba(10,12,22,.04), 0 8px 24px -12px rgba(10,12,22,.10);
  --sh-2:0 2px 6px rgba(10,12,22,.05), 0 28px 56px -24px rgba(10,12,22,.20);
  --ease:cubic-bezier(.16,1,.3,1);
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI Variable Text","Segoe UI","PingFang SC","HarmonyOS Sans SC","MiSans","Microsoft YaHei",sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--ink);background:var(--bg);line-height:1.75;
  -webkit-font-smoothing:antialiased;font-size:16.5px;overflow-x:hidden}
::selection{background:rgba(79,70,229,.16);color:var(--ink)}
a{color:inherit;text-decoration:none}
img{max-width:100%;height:auto}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.container{max-width:1180px;margin:0 auto;padding:0 26px}

.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;padding:14px 30px;
  border-radius:999px;font-weight:650;font-size:15.5px;cursor:pointer;border:1px solid transparent;
  transition:all .25s var(--ease);white-space:nowrap;font-family:inherit}
.btn-primary{background:var(--grad);color:#fff;box-shadow:0 10px 26px -10px rgba(79,70,229,.55)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 18px 38px -12px rgba(79,70,229,.6)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line-2);box-shadow:var(--sh-1)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-lg{padding:17px 38px;font-size:16.5px}

/* ═══ Nav ══ */
.nav{position:sticky;top:0;z-index:100;background:rgba(251,251,253,.72);
  backdrop-filter:saturate(180%) blur(18px);-webkit-backdrop-filter:saturate(180%) blur(18px);
  border-bottom:1px solid transparent;transition:border-color .3s,box-shadow .3s,background .3s}
.nav.scrolled{border-bottom-color:var(--line);box-shadow:0 1px 20px -8px rgba(10,12,22,.12);background:rgba(255,255,255,.86)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:70px}
.logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:19px;letter-spacing:-.02em}
.logo svg{width:34px;height:34px;flex:0 0 auto;border-radius:10px;box-shadow:0 6px 16px -6px rgba(79,70,229,.55)}
.logo .tag{font-size:10.5px;font-weight:700;letter-spacing:.1em;color:var(--accent);
  background:var(--accent-soft);padding:2px 7px;border-radius:5px;align-self:center}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{font-size:14.5px;font-weight:550;color:var(--ink-2);padding:8px 14px;border-radius:999px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--accent);background:var(--accent-soft)}
.nav-links a.btn-primary{color:#fff;padding:10px 22px;margin-left:10px}
.nav-links a.btn-primary:hover{background:var(--accent);color:#fff}
.nav-toggle{display:none;background:none;border:1px solid var(--line-2);border-radius:10px;width:40px;height:40px;cursor:pointer;color:var(--ink)}

/* ═══ Article hero ═══ */
.ahead{position:relative;overflow:hidden;padding:56px 0 40px;border-bottom:1px solid var(--line)}
.ahead::before{content:"";position:absolute;inset:0;
  background-image:radial-gradient(circle at 1px 1px, rgba(10,12,22,.05) 1px, transparent 0);
  background-size:28px 28px;
  -webkit-mask-image:radial-gradient(ellipse 70% 70% at 30% 20%,#000,transparent 76%);
  mask-image:radial-gradient(ellipse 70% 70% at 30% 20%,#000,transparent 76%);pointer-events:none}
.ahead .container{position:relative;max-width:860px}
.crumb{font-size:13px;color:var(--ink-3);margin-bottom:20px;display:flex;flex-wrap:wrap;gap:7px;align-items:center}
.crumb a:hover{color:var(--accent)}
.eyebrow{display:inline-flex;align-items:center;gap:12px;font-size:12px;font-weight:700;letter-spacing:.24em;
  color:var(--accent);text-transform:uppercase;margin-bottom:16px}
.eyebrow::after{content:"";width:34px;height:1px;background:linear-gradient(90deg,var(--line-2),transparent)}
h1{font-size:clamp(27px,3.9vw,44px);font-weight:850;letter-spacing:-.032em;line-height:1.22;margin-bottom:18px}
h1 .grad{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.ameta{display:flex;flex-wrap:wrap;gap:10px 22px;font-size:13.5px;color:var(--ink-3);align-items:center}
.ameta b{color:var(--ink-2);font-weight:650}
.lede{margin-top:22px;font-size:18px;color:var(--ink-2);line-height:1.8;max-width:760px}

/* ═══ Prose ═══ */
.art{padding:56px 0 20px}
.art .container{max-width:860px}
.art h2{font-size:clamp(21px,2.5vw,29px);font-weight:800;letter-spacing:-.022em;line-height:1.32;
  margin:52px 0 16px;padding-top:26px;border-top:1px solid var(--line)}
.art h2:first-child{margin-top:0;padding-top:0;border-top:0}
.art h2 .n{font-variant-numeric:tabular-nums;color:var(--accent);font-size:.72em;margin-right:10px;letter-spacing:.02em}
.art h3{font-size:19px;font-weight:750;letter-spacing:-.015em;margin:34px 0 12px}
.art p{margin-bottom:16px;color:var(--ink-2)}
.art p strong,.art li strong{color:var(--ink);font-weight:700}
.art ul,.art ol{margin:0 0 20px;padding-left:22px}
.art li{margin-bottom:9px;color:var(--ink-2)}
.art li::marker{color:var(--accent)}
.art a:not(.btn){color:var(--accent);font-weight:600;border-bottom:1px solid rgba(79,70,229,.28)}
.art a:not(.btn):hover{border-bottom-color:var(--accent)}
.art table{width:100%;border-collapse:collapse;margin:6px 0 24px;font-size:14.5px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.art th{background:var(--tint);text-align:left;font-weight:700;color:var(--ink);font-size:13.5px;
  padding:12px 14px;border-bottom:1px solid var(--line-2);white-space:nowrap}
.art td{padding:12px 14px;border-bottom:1px solid var(--line);color:var(--ink-2);vertical-align:top}
.art tr:last-child td{border-bottom:0}
.art td.num{font-variant-numeric:tabular-nums;font-weight:700;color:var(--ink);white-space:nowrap}
.tscroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-bottom:24px}
.tscroll table{margin-bottom:0;min-width:520px}
.note{background:var(--accent-soft);border:1px solid #E2E0FB;border-left:3px solid var(--accent);
  border-radius:var(--r-sm);padding:18px 22px;margin:0 0 24px;font-size:15px;color:var(--ink-2);line-height:1.75}
.note b{color:var(--ink)}
.warn{background:#FFF8EC;border-color:#FCE4C7;border-left-color:var(--warn)}
.warn b{color:#92400E}
.src{font-size:13px;color:var(--ink-3);margin:-10px 0 26px;line-height:1.7}
.src b{color:var(--ink-2);font-weight:700}
blockquote{margin:0 0 24px;padding:20px 24px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r);box-shadow:var(--sh-1);font-size:15.5px;color:var(--ink-2)}
blockquote cite{display:block;margin-top:10px;font-size:13px;font-style:normal;color:var(--ink-3)}

/* ═══ 文章内 CTA ═══ */
.incta{margin:44px 0;padding:26px;background:var(--surface);border:1px solid var(--line-2);
  border-radius:var(--r-lg);box-shadow:var(--sh-1);display:flex;flex-wrap:wrap;align-items:center;gap:20px}
.incta img{width:96px;height:96px;box-sizing:content-box;padding:6px;background:#fff;border:1px solid var(--line);border-radius:10px;flex:0 0 auto}
.incta-t{flex:1 1 260px}
.incta-t h4{font-size:16.5px;font-weight:750;margin-bottom:6px}
.incta-t p{font-size:14px;color:var(--ink-3);margin:0;line-height:1.7}

/* ═══ FAQ ═══ */
.faq{margin-top:20px;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq details[open]{background:var(--surface)}
.faq summary{list-style:none;cursor:pointer;padding:20px 6px;display:flex;align-items:center;
  justify-content:space-between;gap:18px;font-size:16.5px;font-weight:700;letter-spacing:-.01em}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--accent)}
.faq .chev{width:28px;height:28px;border-radius:50%;border:1px solid var(--line-2);display:grid;
  place-items:center;flex:0 0 auto;transition:.3s var(--ease);background:var(--bg)}
.faq .chev svg{width:14px;height:14px;stroke:var(--ink-3);fill:none;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round;transition:.3s var(--ease)}
.faq details[open] .chev{background:var(--accent);border-color:var(--accent);transform:rotate(180deg)}
.faq details[open] .chev svg{stroke:#fff}
.faq .ans{padding:0 46px 22px 6px;font-size:15.5px;color:var(--ink-2);line-height:1.85}

/* ═══ 相关文章 ═══ */
.rel{padding:20px 0 76px}
.rel .container{max-width:860px}
.rel h2{font-size:15px;font-weight:750;letter-spacing:.1em;color:var(--ink-3);text-transform:uppercase;margin-bottom:18px}
.relgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.relc{display:block;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);
  padding:20px;transition:.3s var(--ease)}
.relc:hover{transform:translateY(-4px);border-color:#D5D3F5;box-shadow:var(--sh-2)}
.relc h3{font-size:15px;font-weight:750;line-height:1.45;margin-bottom:7px;letter-spacing:-.01em}
.relc p{font-size:13px;color:var(--ink-3);line-height:1.6;margin:0}

/* ═══ Footer ═══ */
footer{background:#0A0C16;color:rgba(255,255,255,.56);padding:56px 0 30px;font-size:14px;position:relative;overflow:hidden}
footer::before{content:"";position:absolute;top:-140px;left:50%;transform:translateX(-50%);
  width:760px;height:300px;background:radial-gradient(ellipse,rgba(79,70,229,.3),transparent 68%);filter:blur(40px)}
.f-top{position:relative;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  padding-bottom:26px;border-bottom:1px solid rgba(255,255,255,.09)}
.f-top .logo{color:#fff;font-size:17px}
.f-top .logo svg{width:30px;height:30px}
.f-links{display:flex;flex-wrap:wrap;gap:18px}
.f-links a{font-size:13.5px;color:rgba(255,255,255,.56)}
.f-links a:hover{color:#fff}
.foot-bot{position:relative;padding-top:22px;display:flex;justify-content:space-between;align-items:center;
  gap:16px;flex-wrap:wrap;font-size:12.5px;color:rgba(255,255,255,.4)}
.foot-bot a{color:rgba(255,255,255,.4)}
.foot-bot a:hover{color:#fff}

/* ═══ WeChat QR — WXQR-BLOCK v1 (2026-09-25) 三站统一块 ═══ */
.wxqr{position:relative;max-width:1180px;margin:30px auto 0;padding:24px 26px 0;
  border-top:1px solid rgba(255,255,255,.09);display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:22px}
.wxqr img{display:block;flex:0 0 auto;box-sizing:content-box;width:132px;height:132px;padding:7px;background:#fff;border-radius:12px}
.wxqr-txt{flex:0 1 auto;max-width:430px;min-width:190px}
.wxqr-t{font-size:15px;font-weight:700;color:#fff;margin-bottom:7px}
.wxqr-d{font-size:13px;line-height:1.7;color:rgba(255,255,255,.5)}

/* ═══ 索引页卡阵 ═══ */
.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:44px 0 80px}
.gcard{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:26px;
  transition:.3s var(--ease);display:flex;flex-direction:column;position:relative;overflow:hidden}
.gcard:hover{transform:translateY(-4px);border-color:#D5D3F5;box-shadow:var(--sh-2)}
.gcard .k{font-size:11.5px;font-weight:700;letter-spacing:.12em;color:var(--accent);text-transform:uppercase;margin-bottom:12px}
.gcard h3{font-size:17px;font-weight:750;line-height:1.4;margin-bottom:10px;letter-spacing:-.015em}
.gcard p{font-size:14px;color:var(--ink-3);line-height:1.7;margin:0 0 16px}
.gcard .go{margin-top:auto;font-size:13.5px;font-weight:700;color:var(--accent);display:inline-flex;align-items:center;gap:5px;transition:gap .25s}
.gcard:hover .go{gap:9px}

@media(max-width:1080px){.relgrid,.grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:768px){
  body{font-size:16px}
  .nav-toggle{display:grid;place-items:center}
  .nav-links{display:none;position:absolute;top:70px;left:0;right:0;background:var(--surface);
    flex-direction:column;align-items:stretch;padding:16px 22px 22px;gap:4px;border-bottom:1px solid var(--line);
    box-shadow:0 18px 32px -18px rgba(10,12,22,.3)}
  .nav-links.open{display:flex}
  .nav-links a{padding:13px 14px;border-radius:10px;font-size:15.5px}
  .nav-links a.btn-primary{margin-left:0;margin-top:8px;justify-content:center}
  .ahead{padding:36px 0 30px}
  .lede{font-size:16.5px}
  .art{padding:36px 0 10px}
  .art h2{margin-top:40px;font-size:22px}
  .art .tscroll{margin:0 -26px 24px;padding:0 26px}
  .incta{padding:20px}
  .faq summary{font-size:15.5px;padding:17px 2px}
  .faq .ans{padding:0 34px 20px 2px;font-size:15px}
  .relgrid,.grid{grid-template-columns:1fr}
  .wxqr{padding:22px 18px 0}
}