/* ============================================================
   子页面版式（与 assets/site.css 配套）
   共享同一套设计语言：亮银底 + 电光蓝紫渐变 + 玻璃质感
   ============================================================ */

/* ===== 页头（子页不用首页那套 152px 的 hero 留白） ===== */
.page-head{padding:140px 0 30px}
.crumb{display:flex;align-items:center;gap:9px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);margin-bottom:20px}
.crumb a{color:var(--ink-2);text-decoration:none;border-bottom:1px solid rgba(120,140,200,.4);transition:all .25s}
.crumb a:hover{color:var(--blue);border-bottom-color:var(--blue)}
.crumb .sep{opacity:.45}
.crumb .cur{color:var(--ink-3)}
.page-head h1{font-size:clamp(1.8rem,3.9vw,2.75rem);line-height:1.2;letter-spacing:-1.4px;font-weight:800;margin-bottom:16px}
.page-head h1 .grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent;color:transparent}
.page-lead{font-size:clamp(1rem,1.75vw,1.1rem);color:var(--ink-2);line-height:1.72;max-width:760px}
.head-tags{display:flex;flex-wrap:wrap;gap:9px;margin-top:22px}
.head-tags span{font-size:12.5px;color:var(--ink-2);background:rgba(255,255,255,.72);
  border:1px solid rgba(120,140,200,.18);padding:5px 13px;border-radius:999px;
  box-shadow:var(--shadow-sm),inset 0 1px 0 rgba(255,255,255,.9)}

/* ===== 窄栏 ===== */
.wrap.narrow{max-width:880px}

/* ===== 正文卡 ===== */
.art{position:relative;background:var(--glass);
  -webkit-backdrop-filter:blur(26px) saturate(180%);backdrop-filter:blur(26px) saturate(180%);
  border-radius:var(--r);box-shadow:var(--shadow),inset 0 1px 0 rgba(255,255,255,.9);
  padding:clamp(24px,4.2vw,50px) clamp(20px,4.4vw,54px)}
.art::after{content:'';position:absolute;inset:0;border-radius:inherit;padding:1px;
  background:linear-gradient(135deg,rgba(255,255,255,.95) 0%,rgba(255,255,255,.25) 42%,rgba(168,85,247,.42) 100%);
  -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
  -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none}
.art h2{font-size:clamp(1.2rem,2.3vw,1.58rem);font-weight:750;letter-spacing:-.75px;line-height:1.32;
  margin:42px 0 15px;padding-top:30px;border-top:1px solid rgba(120,140,200,.17)}
.art h2:first-of-type{margin-top:4px;padding-top:0;border-top:none}
.art h3{font-size:1.03rem;font-weight:700;letter-spacing:-.25px;margin:26px 0 10px;color:var(--ink)}
.art p{font-size:15.5px;color:var(--ink-2);line-height:1.85;margin-bottom:15px}
.art p:last-child{margin-bottom:0}
.art strong,.art b{color:var(--ink);font-weight:650}
.art ul,.art ol{margin:2px 0 17px 21px;font-size:15.5px;color:var(--ink-2);line-height:1.82}
.art li{margin-bottom:9px}
.art li::marker{color:#8b7ae8;font-weight:700}
.art a{color:var(--blue);text-decoration:none;border-bottom:1px solid rgba(79,107,255,.3);transition:border-color .25s}
.art a:hover{border-bottom-color:var(--blue)}
.art code{font-family:ui-monospace,"SF Mono",Menlo,monospace;font-size:.87em;
  background:rgba(79,107,255,.09);color:#3b4ba8;padding:2px 6px;border-radius:6px;border:1px solid rgba(79,107,255,.14)}
.art hr{border:none;border-top:1px solid rgba(120,140,200,.17);margin:32px 0}

/* ===== 要点框 ===== */
.tip,.warn{border-radius:14px;padding:18px 22px;margin:22px 0;font-size:15px;line-height:1.75}
.tip{background:linear-gradient(135deg,rgba(79,107,255,.09),rgba(168,85,247,.06));
  border:1px solid rgba(79,107,255,.22);border-left:4px solid var(--blue);color:var(--ink-2)}
.warn{background:linear-gradient(135deg,rgba(245,158,11,.11),rgba(224,83,63,.06));
  border:1px solid rgba(245,158,11,.3);border-left:4px solid var(--amber);color:var(--ink-2)}
.tip .lb,.warn .lb{display:block;font-size:12px;font-weight:800;letter-spacing:.07em;margin-bottom:7px}
.tip .lb{color:var(--blue)}
.warn .lb{color:#a2680a}
.tip p:last-child,.warn p:last-child{margin-bottom:0}

/* ===== 卡片网格 ===== */
.icards{display:grid;grid-template-columns:repeat(auto-fit,minmax(238px,1fr));gap:14px;margin:22px 0}
.icard{position:relative;background:rgba(255,255,255,.66);border:1px solid rgba(120,140,200,.17);
  border-radius:15px;padding:19px 20px;transition:all .38s var(--ease)}
.icard:hover{border-color:rgba(79,107,255,.34);background:rgba(255,255,255,.9);
  transform:translateY(-2px);box-shadow:0 12px 28px rgba(74,90,160,.13)}
.icard .it{display:flex;align-items:center;gap:9px;font-size:15px;font-weight:750;color:var(--ink);margin-bottom:8px}
.icard .it .dot{width:8px;height:8px;border-radius:50%;background:var(--grad);flex:none;
  box-shadow:0 0 0 3px rgba(124,92,255,.14)}
.icard p{font-size:14px;color:var(--ink-2);line-height:1.72;margin:0}
.icard .meta{display:block;margin-top:9px;font-size:12.5px;color:var(--ink-3)}

/* ===== 表格 ===== */
.art table{width:100%;border-collapse:separate;border-spacing:0;font-size:14.5px;margin:20px 0}
.art thead th{text-align:left;font-size:12px;font-weight:800;letter-spacing:.05em;color:var(--ink-3);
  padding:0 14px 10px;border-bottom:1px solid rgba(120,140,200,.22)}
.art td{padding:12px 14px;border-bottom:1px solid rgba(120,140,200,.12);color:var(--ink-2);vertical-align:top;line-height:1.7}
.art tbody tr:last-child td{border-bottom:none}
.art td:first-child{color:var(--ink);font-weight:650;white-space:nowrap}
.art .tbl-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch}

/* ===== 步骤条 ===== */
.steps{counter-reset:s;list-style:none;margin:22px 0 0;padding:0}
.steps li{counter-increment:s;position:relative;padding:0 0 0 54px;margin-bottom:22px;font-size:15.5px;
  color:var(--ink-2);line-height:1.8}
.steps li::before{content:counter(s,decimal-leading-zero);position:absolute;left:0;top:-1px;
  width:36px;height:36px;border-radius:11px;background:var(--grad);color:#fff;
  font-size:13.5px;font-weight:800;display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 16px rgba(108,92,255,.34)}
.steps li b{display:block;color:var(--ink);font-weight:750;font-size:16px;margin-bottom:5px;letter-spacing:-.2px}
.steps li:last-child{margin-bottom:0}

/* ===== 相关阅读 ===== */
.rel{margin-top:26px}
.rel-head{font-size:12.5px;font-weight:800;letter-spacing:.07em;color:var(--ink-3);text-transform:uppercase;margin-bottom:13px}
.rel-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(224px,1fr));gap:13px}
.rel-card{display:block;text-decoration:none;background:rgba(255,255,255,.66);
  border:1px solid rgba(120,140,200,.17);border-radius:14px;padding:17px 19px;transition:all .38s var(--ease)}
.rel-card:hover{border-color:rgba(79,107,255,.34);background:rgba(255,255,255,.92);
  transform:translateY(-2px);box-shadow:0 12px 28px rgba(74,90,160,.13)}
.rel-card b{display:block;font-size:14.5px;font-weight:750;color:var(--ink);margin-bottom:6px;letter-spacing:-.2px}
.rel-card span{font-size:13px;color:var(--ink-3);line-height:1.65;display:block}

/* ===== 底部 CTA ===== */
.cta-band{margin-top:30px;padding:clamp(26px,4vw,44px);border-radius:22px;text-align:center;position:relative;overflow:hidden;
  background:linear-gradient(135deg,#0e1329 0%,#1a2145 52%,#241a45 100%);color:var(--night-ink,#f2f5ff);
  box-shadow:0 26px 62px -20px rgba(14,19,41,.6)}
.cta-band::before{content:'';position:absolute;width:520px;height:520px;border-radius:50%;
  top:-300px;right:-140px;background:radial-gradient(circle,rgba(124,92,255,.42),transparent 68%);pointer-events:none}
.cta-band::after{content:'';position:absolute;width:420px;height:420px;border-radius:50%;
  bottom:-280px;left:-120px;background:radial-gradient(circle,rgba(34,211,238,.3),transparent 68%);pointer-events:none}
.cta-band h2{position:relative;font-size:clamp(1.28rem,2.6vw,1.75rem);font-weight:750;letter-spacing:-.85px;
  line-height:1.3;margin-bottom:12px;color:#fff}
.cta-band p{position:relative;font-size:15px;color:rgba(233,238,255,.74);line-height:1.75;
  max-width:620px;margin:0 auto 24px}
.cta-band .actions{position:relative;display:flex;gap:12px;justify-content:center;flex-wrap:wrap}
.cta-band .btn{-webkit-backdrop-filter:none;backdrop-filter:none}
.cta-band .btn-ghost{background:rgba(255,255,255,.13);color:#fff;box-shadow:inset 0 1px 0 rgba(255,255,255,.2)}
.cta-band .btn-ghost:hover{background:rgba(255,255,255,.22)}
.cta-band .btn-num{font-weight:600;letter-spacing:.2px}

/* ===== 移动端 ===== */
@media(max-width:768px){
  .page-head{padding:118px 0 24px}
  .art{padding:24px 20px 30px}
  .art h2{padding-top:24px;margin-top:34px}
  .art td:first-child{white-space:normal}
  .art table{font-size:13.5px}
  .art thead th,.art td{padding-left:9px;padding-right:9px}
  .icards,.rel-grid{grid-template-columns:1fr}
  .steps li{padding-left:46px}
  .steps li::before{width:31px;height:31px;font-size:12px;border-radius:9px}
  .cta-band .actions{flex-direction:column;align-items:stretch}
  .cta-band .btn{justify-content:center}
}