:root{
    --blue:#0052cc; --blue-d:#003a8c; --navy:#0f2747; --ink:#1f2d3d; --muted:#5b6b7f;
    --line:#e2e8f0; --bg:#f5f8fc; --card:#ffffff; --accent:#00a3c4; --good:#0a7d4d; --warn:#b54708; --warn-bg:#fff5ed;
    --shadow-sm:0 2px 10px rgba(15,39,71,.06); --shadow-md:0 8px 24px rgba(15,39,71,.10); --shadow-lg:0 18px 44px rgba(15,39,71,.14);
    --radius:14px; --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,"PingFang SC","Microsoft YaHei",sans-serif;
  }
  *{box-sizing:border-box}
  html{scroll-behavior:smooth}
  body{margin:0;font-family:var(--font);color:var(--ink);background:#fff;line-height:1.66;font-size:16px;-webkit-font-smoothing:antialiased}
  a{color:var(--blue);text-decoration:none}
  a:hover{text-decoration:underline}
  img{max-width:100%}
  ::selection{background:rgba(0,82,204,.16)}
  :focus-visible{outline:3px solid rgba(0,163,196,.55);outline-offset:2px;border-radius:6px}
  button{font-family:var(--font)}
  .cs-wrap{max-width:1140px;margin:0 auto;padding:0 20px}
  section{scroll-margin-top:68px}

  /* ===== BREADCRUMB ===== */
  .cs-crumb{padding:18px 0;font-size:13.5px;color:var(--muted)}
  .cs-crumb a{color:var(--muted)}
  .cs-crumb a:hover{color:var(--blue)}
  .cs-crumb span{color:var(--ink);font-weight:600}

  /* ===== HERO ===== */
  .cs-hero{position:relative;background:linear-gradient(135deg,#0a1c3a 0%,#0f2747 42%,#143a6b 78%,#0052cc 130%);color:#fff;padding:60px 0 50px;overflow:hidden}
  .cs-hero::before{content:"";position:absolute;inset:0;background-image:linear-gradient(rgba(124,172,236,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(124,172,236,.10) 1px,transparent 1px);background-size:44px 44px;mask-image:radial-gradient(ellipse 90% 80% at 30% 40%,#000 30%,transparent 100%);-webkit-mask-image:radial-gradient(ellipse 90% 80% at 30% 40%,#000 30%,transparent 100%);pointer-events:none}
  .cs-hero::after{content:"";position:absolute;width:560px;height:560px;right:-160px;top:-180px;border-radius:50%;background:radial-gradient(circle,rgba(0,163,196,.22),transparent 65%);pointer-events:none}
  .cs-hero .cs-wrap{position:relative;z-index:1}
  .cs-eyebrow{display:inline-flex;align-items:center;gap:10px;font-size:12.5px;letter-spacing:.14em;text-transform:uppercase;color:#9cc3ff;font-weight:700;margin-bottom:16px}
  .cs-eyebrow::before{content:"";width:26px;height:2px;border-radius:2px;background:linear-gradient(90deg,var(--accent),#7fd1ff)}
  .cs-hero h2{font-size:clamp(30px,4.4vw,46px);line-height:1.12;margin:0 0 18px;font-weight:800;letter-spacing:-.01em;text-wrap:balance;color:#ffffff}
  .cs-hero p.cs-sub{font-size:17px;color:#dbe7f7;margin:0 0 24px;max-width:760px}
  .cs-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
  .cs-tag{background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.20);padding:7px 14px;border-radius:999px;font-size:13.5px;font-weight:600;color:#eaf2ff}
  .cs-hero-cta{display:flex;flex-wrap:wrap;gap:12px}
  .cs-btn{display:inline-block;padding:14px 24px;border-radius:9px;font-weight:700;font-size:15px;cursor:pointer;border:none;transition:background .18s,transform .18s,box-shadow .18s,border-color .18s;text-decoration:none}
  .cs-btn:hover{text-decoration:none}
  .cs-btn--blue{background:var(--blue);color:#fff;border:2px solid var(--blue);box-shadow:0 6px 18px rgba(0,82,204,.35)}
  .cs-btn--blue:hover{background:var(--blue-d);border-color:var(--blue-d);transform:translateY(-2px);box-shadow:0 10px 24px rgba(0,82,204,.42)}
  .cs-btn--white{background:#fff;color:var(--navy);border:2px solid #fff}
  .cs-btn--white:hover{background:#eaf2ff;transform:translateY(-2px)}
  .cs-btn--ghost{background:transparent;color:#eaf2ff;border:2px solid rgba(255,255,255,.45)}
  .cs-btn--ghost:hover{border-color:#fff;background:rgba(255,255,255,.08);transform:translateY(-2px)}

  /* ===== SUBNAV ===== */
  .cs-subnav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line);box-shadow:0 2px 10px rgba(15,39,71,.06)}
  .cs-subnav-in{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;padding:0 14px}
  .cs-subnav-in::-webkit-scrollbar{display:none}
  .cs-subnav-in a{padding:14px 12px;font-size:13.5px;color:var(--muted);white-space:nowrap;font-weight:600;border-bottom:3px solid transparent;margin-bottom:-1px;transition:color .15s,border-color .15s}
  .cs-subnav-in a:hover{color:var(--blue);text-decoration:none}
  .cs-subnav-in a.is-active{color:var(--blue);border-bottom-color:var(--blue)}
  .cs-subnav-cta{margin-left:auto;background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;border:none;padding:9px 16px;border-radius:8px;font-weight:700;font-size:13.5px;cursor:pointer;white-space:nowrap;align-self:center;transition:box-shadow .18s,transform .18s}
  .cs-subnav-cta:hover{box-shadow:0 6px 16px rgba(0,82,204,.4);transform:translateY(-1px)}

  /* ===== SECTIONS ===== */
  .cs-sec{padding:54px 0;border-bottom:1px solid var(--line)}
  .cs-sec--alt{background:var(--bg)}
  .cs-h2{font-size:clamp(23px,2.8vw,30px);margin:0 0 8px;color:var(--navy);font-weight:800;position:relative;padding-left:16px;letter-spacing:-.01em;line-height:1.25}
  .cs-h2:before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:5px;border-radius:3px;background:linear-gradient(180deg,var(--blue),var(--accent))}
  .cs-h3{font-size:19px;margin:28px 0 8px;color:var(--blue-d);font-weight:700}
  .cs-eyebrow2{display:block;font-size:12.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--accent);font-weight:700;margin-bottom:8px}
  .cs-lead{font-size:16.5px;color:var(--ink);margin:0 0 22px;max-width:900px}
  .cs-note{background:var(--bg);border-left:4px solid var(--accent);padding:15px 18px;border-radius:0 10px 10px 0;margin:20px 0;font-size:15px}
  .cs-note strong{color:var(--blue-d)}

  /* grids + cards */
  .cs-grid{display:grid;gap:18px;margin-top:18px}
  .cs-cols-2{grid-template-columns:repeat(2,1fr)}
  .cs-cols-3{grid-template-columns:repeat(3,1fr)}
  .cs-cols-4{grid-template-columns:repeat(4,1fr)}
  .cs-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow-sm);transition:transform .18s,box-shadow .18s}
  .cs-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md)}
  .cs-card h3{margin:0 0 8px;font-size:17px;color:var(--navy)}
  .cs-card p{margin:0;font-size:14.5px;color:var(--muted)}
  .cs-card .ico{font-size:22px;margin-bottom:6px;display:block}

  /* callouts */
  .cs-ask{border:1px solid #bfe3ee;background:#eef9fc;border-left:4px solid var(--accent);border-radius:0 10px 10px 0;padding:16px 18px;margin:18px 0}
  .cs-ask .lab{font-weight:700;color:var(--blue-d);font-size:13px;letter-spacing:.04em;text-transform:uppercase;display:block;margin-bottom:6px}
  .cs-ask ul{margin:0;padding-left:18px}
  .cs-ask li{margin:4px 0;font-size:14.5px}
  .cs-flag{border:1px solid #f3d3b5;background:var(--warn-bg);border-left:4px solid var(--warn);border-radius:0 10px 10px 0;padding:16px 18px;margin:18px 0}
  .cs-flag .lab{font-weight:700;color:var(--warn);font-size:13px;letter-spacing:.04em;text-transform:uppercase;display:block;margin-bottom:6px}
  .cs-flag ul{margin:0;padding-left:18px}
  .cs-flag li{margin:4px 0;font-size:14.5px}
  .cs-proof{border:1px solid #bfe6cf;background:#effaf3;border-left:4px solid var(--good);border-radius:0 10px 10px 0;padding:16px 18px;margin:18px 0}
  .cs-proof .lab{font-weight:700;color:var(--good);font-size:13px;letter-spacing:.04em;text-transform:uppercase;display:block;margin-bottom:6px}
  .cs-proof p{margin:0 0 6px;font-size:14.5px}
  .cs-proof:last-child{margin-bottom:0}

  /* tables */
  .cs-table-wrap{overflow-x:auto;margin-top:20px;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow-sm)}
  table.cs-table{border-collapse:collapse;width:100%;min-width:560px;font-size:14.5px;background:#fff}
  table.cs-table th{background:var(--navy);color:#eaf2ff;text-align:left;padding:13px 16px;font-weight:700;font-size:13.5px;letter-spacing:.02em}
  table.cs-table td{padding:12px 16px;border-top:1px solid var(--line);vertical-align:top}
  table.cs-table tr:nth-child(even) td{background:#f8fbfe}
  table.cs-table td b{color:var(--navy)}

  /* master checklist */
  .cs-checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 22px;margin-top:18px}
  .cs-checklist label{display:flex;align-items:flex-start;gap:11px;padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;cursor:pointer;font-size:14.5px;transition:background .15s,border-color .15s}
  .cs-checklist label:hover{background:var(--bg);border-color:#c7d6ea}
  .cs-checklist input{margin-top:3px;width:17px;height:17px;accent-color:var(--blue);flex:0 0 auto}
  .cs-checklist label.done{background:#eefaf3;border-color:#bfe6cf;color:var(--good);text-decoration:line-through;text-decoration-color:rgba(10,125,77,.5)}
  .cs-checklist label.done a{color:var(--good)}
  .cs-checklist a{font-weight:600}

  /* proof metrics */
  .cs-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:20px}
  .cs-metric{background:#fff;border:1px solid var(--line);border-radius:12px;padding:18px;text-align:center;box-shadow:var(--shadow-sm)}
  .cs-metric b{display:block;font-size:24px;color:var(--blue);font-weight:800}
  .cs-metric span{font-size:13px;color:var(--muted)}

  /* RFQ */
  .cs-rfq{background:#fff;border:1px solid var(--line);border-radius:12px;padding:22px;box-shadow:var(--shadow-sm);margin-top:18px}
  .cs-rfq ul{margin:0;padding-left:20px}
  .cs-rfq li{margin:7px 0;font-size:15px}
  .cs-rfq li b{color:var(--navy)}
  .cs-copy-btn{margin-top:16px;background:var(--navy);color:#fff;border:none;padding:11px 18px;border-radius:8px;font-weight:700;font-size:14px;cursor:pointer;transition:background .18s}
  .cs-copy-btn:hover{background:#16335c}

  /* CTA band */
  .cs-cta{background:linear-gradient(135deg,#0f2747,#143a6b);color:#fff;border-radius:18px;padding:40px;margin-top:10px;text-align:center;position:relative;overflow:hidden}
  .cs-cta::after{content:"";position:absolute;width:420px;height:420px;right:-120px;bottom:-160px;border-radius:50%;background:radial-gradient(circle,rgba(0,163,196,.25),transparent 65%);pointer-events:none}
  .cs-cta h2{margin:0 0 10px;font-size:clamp(22px,3vw,30px);position:relative}
  .cs-cta p{margin:0 auto 22px;max-width:620px;color:#dbe7f7;position:relative}
  .cs-cta .cs-hero-cta{justify-content:center;position:relative}
  .cs-cta .cs-btn--white{background:#fff;color:var(--navy)}
  .cs-trustline{margin-top:18px;font-size:13.5px;color:#a9c6ee;position:relative}

  /* related */
  .cs-rel{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px}
  .cs-rel a{display:inline-block;padding:10px 16px;border:1px solid var(--line);border-radius:9px;background:#fff;font-weight:600;font-size:14px;color:var(--blue-d);transition:border-color .15s,transform .15s}
  .cs-rel a:hover{border-color:var(--blue);transform:translateY(-2px);text-decoration:none}

  /* FAQ */
  .cs-faq{margin-top:16px;border-top:1px solid var(--line)}
  .cs-faq details{border-bottom:1px solid var(--line);padding:6px 0}
  .cs-faq summary{cursor:pointer;font-weight:700;color:var(--navy);padding:14px 4px;font-size:16px;list-style:none}
  .cs-faq summary::-webkit-details-marker{display:none}
  .cs-faq summary:before{content:"+";color:var(--blue);font-weight:800;margin-right:10px;display:inline-block;width:18px}
  .cs-faq details[open] summary:before{content:"−"}
  .cs-faq .ans{padding:0 4px 16px 32px;color:var(--muted);font-size:15px;max-width:880px}

  /* company profile + peer cards */
  .cs-profile-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:12px;margin:6px 0 4px}
  .cs-profile-head h3{margin:0;font-size:21px;color:var(--navy)}
  .cs-profile-head .tag{font-size:13px;color:var(--accent);font-weight:700;letter-spacing:.02em}
  .cs-co{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin-top:20px}
  .cs-co .cs-card h4{margin:0 0 8px;font-size:15px;color:var(--blue-d)}
  .cs-co .cs-card ul{margin:0;padding-left:18px;font-size:14px;color:var(--muted)}
  .cs-co .cs-card li{margin:5px 0}
  .cs-peer{border:1px solid var(--line);border-radius:12px;padding:18px;background:#fff;box-shadow:var(--shadow-sm);display:flex;flex-direction:column}
  .cs-peer h3{margin:0 0 4px;font-size:16px;color:var(--navy)}
  .cs-peer .meta{font-size:12.5px;color:var(--accent);font-weight:700;letter-spacing:.02em;margin-bottom:8px}
  .cs-peer p{margin:0 0 8px;font-size:14px;color:var(--muted)}
  .cs-peer .vrf{font-size:12.5px;color:var(--muted);border-top:1px dashed var(--line);padding-top:9px;margin-top:auto}
  .cs-peer .vrf b{color:var(--blue-d)}

  @media (max-width:860px){
    .cs-cols-3,.cs-cols-4,.cs-metrics{grid-template-columns:repeat(2,1fr)}
    .cs-checklist{grid-template-columns:1fr}
  }
  @media (max-width:560px){
    .cs-cols-2,.cs-cols-3,.cs-cols-4,.cs-metrics{grid-template-columns:1fr}
    .cs-cta{padding:28px 20px}
  }