:root{
    --ink:#0e1a2b; --ink2:#33475b; --muted:#5b6b7f;
    --brand:#0b3d6b; --brand2:#0f5a9e; --accent:#c98a2d; --gold:#f0b455;
    --line:#e2e8f0; --bg:#f5f7fa; --card:#ffffff;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font:15px/1.7 -apple-system,"Segoe UI","Microsoft YaHei",sans-serif;color:var(--ink);background:var(--bg)}
  .wrap{max-width:1080px;margin:0 auto;padding:0 20px}
  a{color:var(--brand2)}

  /* ---------- Hero ---------- */
  .hero{background:linear-gradient(135deg,#081c33 0%,#0b3d6b 55%,#0f5a9e 100%);color:#fff;padding:56px 0 48px;position:relative;overflow:hidden}
  .hero::after{content:"";position:absolute;right:-120px;top:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(240,180,85,.22),transparent 65%)}
  .hero .kicker{display:inline-block;font-size:12px;letter-spacing:.14em;color:#f0b455;border:1px solid rgba(240,180,85,.5);border-radius:999px;padding:4px 12px;margin-bottom:18px}
  .hero h1{font-size:30px;line-height:1.35;margin:0 0 14px;font-weight:700}
  .hero .subtitle{font-size:16px;color:#cfe0f0;margin:0 0 10px;max-width:820px}
  .hero .desc{font-size:13.5px;color:#9fb8d0;margin:0;max-width:820px}
  .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
  .tags span{font-size:12.5px;padding:5px 12px;border-radius:6px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18)}

  section{padding:44px 0}
  h2{font-size:22px;margin:0 0 6px;color:var(--ink)}
  .sec-note{color:var(--muted);font-size:13.5px;margin:0 0 22px}
  .rule{height:3px;width:46px;background:var(--accent);border-radius:2px;margin:0 0 18px}

  /* ---------- 模块2 概览 ---------- */
  .ov-card{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 28px;box-shadow:0 1px 3px rgba(14,26,43,.05)}
  .ov-card h3{margin:0 0 8px;font-size:18px;color:var(--brand)}
  .ov-card p{margin:6px 0;color:var(--ink2);font-size:14.5px}
  .ov-card .src{font-size:12.5px;color:var(--muted);border-top:1px dashed var(--line);margin-top:16px;padding-top:12px}
  .client-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin-top:20px}
  .client{background:#fbfdff;border:1px solid var(--line);border-radius:10px;padding:16px}
  .client .idx{font-size:11px;color:var(--accent);font-weight:700;letter-spacing:.1em}
  .client .nm{font-size:15px;font-weight:700;color:var(--ink);margin:4px 0 6px;line-height:1.4}
  .client .role{font-size:12.5px;color:var(--muted);margin:0 0 8px}
  .client .amt{font-size:13px;color:var(--brand2);font-weight:600}
  .client .amt small{color:var(--muted);font-weight:400}

  /* ---------- 模块3 折叠卡片 ---------- */
  details.client-card{background:var(--card);border:1px solid var(--line);border-radius:12px;margin-bottom:14px;overflow:hidden;box-shadow:0 1px 2px rgba(14,26,43,.04)}
  details.client-card summary{list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;gap:14px;user-select:none}
  details.client-card summary::-webkit-details-marker{display:none}
  details.client-card summary .tag{flex:none;font-size:12px;font-weight:700;background:var(--brand);color:#fff;border-radius:8px;padding:5px 10px}
  details.client-card summary .t{flex:1;min-width:0}
  details.client-card summary .t b{display:block;font-size:15.5px;color:var(--ink)}
  details.client-card summary .t span{font-size:12.5px;color:var(--muted)}
  details.client-card summary .chev{flex:none;color:var(--muted);transition:transform .2s}
  details.client-card[open] summary .chev{transform:rotate(180deg)}
  details.client-card .body{padding:4px 22px 22px;border-top:1px solid var(--line)}
  .sub{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.08em;margin:18px 0 6px;text-transform:uppercase}
  .body p{margin:6px 0;color:var(--ink2);font-size:14.5px}
  .body ol{margin:6px 0 6px 0;padding-left:20px;color:var(--ink2);font-size:14.5px}
  .body ol li{margin:5px 0}
  .body ul{margin:6px 0;padding-left:20px;color:var(--ink2);font-size:14.5px}
  .body ul li{margin:4px 0}
  .kv{display:inline-block;background:#fff7e8;border:1px solid #f5e0b6;color:#7a5a1c;border-radius:6px;padding:2px 8px;font-size:12.5px;margin:2px 4px 2px 0}

  /* ---------- 模块4 工作流 ---------- */
  .flow{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:14px}
  .step{background:var(--card);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:10px;padding:18px 20px}
  .step .n{font-size:12px;font-weight:700;color:var(--accent);letter-spacing:.08em}
  .step b{display:block;font-size:15px;margin:6px 0 6px}
  .step p{margin:0;font-size:13.5px;color:var(--ink2)}

  /* ---------- 模块5 价值 ---------- */
  .value{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:26px 28px}
  .value .item{display:flex;gap:12px;margin:14px 0;align-items:flex-start}
  .value .item .ico{flex:none;width:22px;height:22px;border-radius:50%;background:#e7f4ec;color:#1d7a45;display:flex;align-items:center;justify-content:center;font-size:13px;margin-top:2px}
  .value .item p{margin:0;color:var(--ink2);font-size:14.5px}
  .warn{margin-top:18px;padding:14px 16px;background:#fff7f0;border:1px solid #f5d8be;border-radius:10px;font-size:13.5px;color:#7a4a1c}

  /* ---------- 模块6 CTA ---------- */
  .cta{background:linear-gradient(135deg,#0b3d6b,#0f5a9e);color:#fff;border-radius:16px;padding:40px 34px;text-align:center}
  .cta h2{margin:0 0 10px;color:#fff}
  .cta p{color:#cfe0f0;margin:0 auto 20px;max-width:640px;font-size:14.5px}
  .cta .btn{display:inline-block;background:var(--gold);color:#1c2b3a;font-weight:700;padding:12px 26px;border-radius:8px;text-decoration:none;font-size:15px}
  .cta .hint{display:block;margin-top:12px;font-size:12.5px;color:#9fb8d0}

  footer{padding:30px 0 44px;color:var(--muted);font-size:12.5px;text-align:center}
  @media(max-width:640px){.hero h1{font-size:23px}section{padding:34px 0}}