:root{
  --ink:#15233b; --bg:#ffffff; --bg-soft:#f4f7fb; --brand:#0a6cff; --brand2:#00c2c7;
  --line:#e3e9f2; --muted:#5b6b85; --header-h:60px; --h2-inset:0;
  --radius:14px; --shadow:0 10px 30px rgba(20,40,80,.08);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif;color:var(--ink);background:var(--bg);line-height:1.75;font-size:16px;padding-top:var(--header-h)}
a{color:var(--brand);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.tag-text{display:inline-block;background:var(--bg-soft);border:1px solid var(--line);color:var(--muted);border-radius:999px;padding:2px 10px;font-size:13px;margin:2px 4px 2px 0}

/* ===== Header (PC fixed) ===== */
.cnc-header{position:fixed;top:0;left:0;right:0;height:var(--header-h);z-index:50;background:linear-gradient(90deg,#0c1c3a,#102a52);color:#fff;box-shadow:0 2px 14px rgba(0,0,0,.18)}
.cnc-header-inner{max-width:1200px;margin:0 auto;height:100%;display:flex;align-items:center;justify-content:space-between;padding:0 16px}
.cnc-logo{color:#fff;font-weight:800;font-size:18px;letter-spacing:.5px;white-space:nowrap}
.cnc-logo:hover{text-decoration:none}
.cnc-nav-list{list-style:none;display:flex;gap:18px;margin:0;padding:0;align-items:center}
.cnc-nav-list a{color:#dce6f5;font-size:15px;padding:6px 2px}
.cnc-nav-list a:hover{color:#fff;text-decoration:none}
.cnc-nav-has{position:relative}
.cnc-nav-sub{display:none;position:absolute;top:100%;left:0;background:#0c1c3a;border:1px solid #1d335c;min-width:150px;padding:6px 0;border-radius:10px;box-shadow:var(--shadow)}
.cnc-nav-has:hover .cnc-nav-sub{display:block}
.cnc-nav-sub li{padding:0}
.cnc-nav-sub a{display:block;padding:8px 16px;font-size:14px}
.cnc-nav-toggle{display:none;background:#0a6cff;color:#fff;border:0;border-radius:8px;padding:8px 14px;font-size:14px;cursor:pointer}

/* ===== Layout ===== */
.article-layout{max-width:1032px;margin:24px auto;padding:0 16px;display:grid;grid-template-columns:minmax(0,760px) 240px;gap:32px;align-items:start}
.product-layout{grid-template-columns:minmax(0,1fr) 240px}
.list-layout{max-width:1100px;margin:24px auto;padding:0 16px;display:grid;grid-template-columns:240px minmax(0,1fr);gap:32px;align-items:start}
.page-wrap{max-width:860px;margin:24px auto;padding:0 24px}

/* ===== Breadcrumb (aligns with H2 left edge) ===== */
.cnc-breadcrumb{margin:0 0 14px;font-size:13px;color:var(--muted)}
.cnc-crumb-list{list-style:none;display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0}
.cnc-crumb-list li{display:inline-flex;align-items:center}
.cnc-crumb-list li:not(:last-child)::after{content:"›";margin-left:6px;color:#b9c4d6}
.cnc-crumb-list a{color:var(--muted)}
.cnc-crumb-list span{color:var(--ink);font-weight:600}

/* ===== Article / Product ===== */
.cnc-article-head h1,.cnc-product-head h1{font-size:30px;line-height:1.3;margin:0 0 10px}
.cnc-product-desc{color:var(--muted);font-size:16px;margin:0 0 18px}
.cnc-article-body{font-size:16px;color:#23324d}
.cnc-article-body h2{font-size:23px;margin:34px 0 12px;padding-left:12px;border-left:4px solid var(--brand);scroll-margin-top:80px}
.cnc-article-body h3{font-size:19px;margin:24px 0 8px;scroll-margin-top:80px}
.cnc-article-body p{margin:12px 0}
.cnc-article-body blockquote{background:linear-gradient(90deg,rgba(10,108,255,.06),rgba(0,194,199,.06));border-left:4px solid var(--brand2);margin:18px 0;padding:12px 16px;border-radius:0 10px 10px 0;color:#1d2c47}
.cnc-article-body blockquote p{margin:4px 0}
.cnc-article-body ul,.cnc-article-body ol{padding-left:22px;margin:12px 0}
.cnc-article-body li{margin:6px 0}
.cnc-article-body > blockquote:first-child{font-size:17px;font-weight:600;color:#16243d}

/* keyword + update */
.cnc-keywords{font-size:14px;color:var(--muted);margin:6px 0 14px}
.cnc-update{font-size:13px;color:#8a98b3;margin:0 0 6px}

/* tables */
table.cnc-spec{width:100%;border-collapse:collapse;margin:16px 0;font-size:15px;background:#fff;box-shadow:var(--shadow);border-radius:10px;overflow:hidden}
table.cnc-spec th,table.cnc-spec td{border:1px solid var(--line);padding:10px 12px;text-align:left}
table.cnc-spec thead th{background:linear-gradient(90deg,#0c1c3a,#16365f);color:#fff;font-weight:600}
table.cnc-spec tbody tr:nth-child(even){background:var(--bg-soft)}
table.cnc-spec tbody tr:hover{background:#eef4ff}

/* FAQ details */
details.faq-item,details{margin:10px 0}
.cnc-article-body details{border:1px solid var(--line);border-radius:10px;padding:4px 14px;background:#fbfdff}
.cnc-article-body details summary{cursor:pointer;font-weight:600;padding:8px 0;list-style:none}
.cnc-article-body details summary::-webkit-details-marker{display:none}
.cnc-article-body details summary::before{content:"＋";color:var(--brand);margin-right:8px;font-weight:800}
.cnc-article-body details[open] summary::before{content:"－"}
.cnc-article-body details p{margin:6px 0 10px}

/* related reading */
.cnc-related{margin:28px 0;padding:16px 18px;background:var(--bg-soft);border-radius:12px}
.cnc-related h2{font-size:20px;margin:0 0 10px;border:0;padding:0}
.cnc-related ul{margin:0;padding-left:20px}

/* case study */
.cnc-case{margin:22px 0;padding:14px 18px;border:1px dashed var(--brand2);border-radius:12px;background:rgba(0,194,199,.05)}
.cnc-case-title{margin:0 0 6px;color:var(--brand2);font-size:17px}

/* TOC aside */
.toc-aside{position:sticky;top:calc(var(--header-h) + 20px);max-height:calc(100vh - var(--header-h) - 40px);overflow:auto}
.toc-panel,.cat-panel{border:1px solid var(--line);border-radius:12px;background:#fff;box-shadow:var(--shadow);padding:8px 14px;margin-bottom:16px}
.toc-panel summary,.cat-panel summary{cursor:pointer;font-weight:700;padding:6px 0;list-style:none;display:flex;align-items:center}
.toc-panel summary::-webkit-details-marker,.cat-panel summary::-webkit-details-marker{display:none}
.toc-panel summary::after,.cat-panel summary::after{content:"▾";margin-left:auto;transition:transform .2s;color:var(--muted)}
.toc-panel[open] summary::after,.cat-panel[open] summary::after{transform:rotate(180deg)}
.toc-list{list-style:none;margin:6px 0 0;padding:0}
.toc-list li{margin:4px 0}
.toc-list a{font-size:14px;color:var(--muted)}
.toc-lvl-3{padding-left:16px;font-size:13px}

/* Category side */
.cat-side .category-list{list-style:none;margin:6px 0 0;padding:0}
.cat-side .category-list li{margin:2px 0}
.cat-side .category-list a{display:block;padding:8px 12px;border-radius:8px;color:var(--ink);font-size:15px}
.cat-side .category-list a:hover{background:var(--bg-soft);text-decoration:none}
.cat-side .category-list li.active a{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff}

/* List content */
.cnc-list-title{font-size:26px;margin:0 0 6px}
.cnc-list-desc{color:var(--muted);margin:0 0 18px}
.cnc-item-list{list-style:none;margin:0;padding:0}
.cnc-item{padding:16px 0;border-bottom:1px solid var(--line)}
.cnc-item-title{font-size:19px;margin:0 0 4px;color:var(--ink)}
.cnc-item-link:hover{text-decoration:none}
.cnc-item-meta{font-size:13px;color:var(--brand2);margin:0 0 4px}
.cnc-item-sum{color:var(--muted);margin:0;font-size:15px}
.cnc-list-faq{margin-top:26px}
.cnc-list-faq details{border:1px solid var(--line);border-radius:10px;padding:6px 14px;margin:10px 0;background:#fbfdff}
.cnc-list-faq summary{cursor:pointer;font-weight:600;list-style:none}
.cnc-list-faq summary::-webkit-details-marker{display:none}

/* pager */
.cnc-pager{display:flex;gap:14px;align-items:center;margin:22px 0;font-size:15px}
.cnc-pager a{padding:6px 14px;border:1px solid var(--line);border-radius:8px;background:#fff}
.cnc-pager-dis{color:#b9c4d6;padding:6px 14px}
.cnc-pager-cur{color:var(--muted)}

/* ===== Hero / Home ===== */
.cnc-hero{background:radial-gradient(1200px 400px at 70% -10%,rgba(0,194,199,.25),transparent),linear-gradient(120deg,#0c1c3a,#123a6b);color:#fff;padding:64px 16px 56px}
.cnc-hero-inner{max-width:1100px;margin:0 auto}
.cnc-hero-kicker{color:#7fd8e6;letter-spacing:2px;font-size:14px;margin:0 0 8px;text-transform:uppercase}
.cnc-hero-title{font-size:40px;margin:0 0 14px;font-weight:800}
.cnc-hero-sub{font-size:18px;color:#cfe0f5;max-width:720px;margin:0 0 22px}
.cnc-hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.cnc-btn{display:inline-block;padding:11px 22px;border-radius:999px;border:1px solid rgba(255,255,255,.4);color:#fff;font-weight:600}
.cnc-btn:hover{text-decoration:none;background:rgba(255,255,255,.12)}
.cnc-btn-primary{background:linear-gradient(90deg,var(--brand),var(--brand2));border:0;color:#fff}
.cnc-band{max-width:1100px;margin:40px auto;padding:0 16px}
.cnc-band-title{font-size:24px;margin:0 0 16px;padding-left:12px;border-left:4px solid var(--brand2)}
.cnc-band-gap{margin-top:36px}
.cnc-cap-grid{list-style:none;display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:0;padding:0}
.cnc-cap-card a{display:flex;flex-direction:column;gap:8px;padding:20px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;box-shadow:var(--shadow);transition:transform .15s,box-shadow .15s}
.cnc-cap-card a:hover{transform:translateY(-3px);text-decoration:none;box-shadow:0 16px 36px rgba(20,40,80,.14)}
.cnc-cap-name{font-size:18px;font-weight:700;color:var(--ink)}
.cnc-cap-go{color:var(--brand);font-size:14px}
.cnc-keyword-cloud{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:0;padding:0}
.cnc-scene-list{list-style:none;display:grid;grid-template-columns:repeat(2,1fr);gap:10px;margin:0;padding:0}
.cnc-scene-list li{padding:12px 14px;background:var(--bg-soft);border-radius:10px;border-left:3px solid var(--brand)}
.cnc-baseline-note{color:var(--muted);font-size:14px;margin-top:10px}
.cnc-home-list .cnc-item-sum{font-size:14px}
.cnc-archive-list{list-style:none;margin:0 0 18px;padding:0}
.cnc-archive-list li{padding:8px 0;border-bottom:1px solid var(--line);display:flex;justify-content:space-between;gap:12px}
.cnc-archive-cat{color:var(--brand2);font-size:13px;white-space:nowrap}

/* ===== Footer ===== */
.cnc-footer{background:#0c1c3a;color:#cfe0f5;margin-top:48px;padding:34px 16px}
.cnc-footer-inner{max-width:1100px;margin:0 auto;text-align:center}
.cnc-footer-site{font-weight:700;margin:0 0 10px}
.cnc-footer-nav{display:flex;gap:16px;justify-content:center;flex-wrap:wrap;margin:0 0 12px}
.cnc-footer-nav a{color:#9fc0e8}
.cnc-footer-note{color:#7e93b5;font-size:13px;max-width:760px;margin:0 auto}

/* ===== Floating capsule ===== */
.cnc-capsule{position:fixed;right:16px;top:50%;transform:translateY(-50%);z-index:60;display:flex;flex-direction:column;gap:8px;padding:8px;background:linear-gradient(180deg,#0a6cff,#00c2c7);border-radius:999px;box-shadow:0 12px 30px rgba(10,108,255,.4)}
.cnc-cap-btn{display:flex;flex-direction:column;align-items:center;justify-content:center;width:52px;height:52px;border:0;background:rgba(255,255,255,.14);color:#fff;border-radius:50%;cursor:pointer;font-size:12px;gap:2px;transition:background .15s}
.cnc-cap-btn:hover{background:rgba(255,255,255,.3)}
.cnc-cap-ico{font-size:18px;line-height:1}
.cnc-cap-txt{font-size:11px}
.cnc-mailpop{position:fixed;right:80px;top:50%;transform:translateY(-50%);z-index:61;background:#0c1c3a;color:#fff;padding:16px 18px;border-radius:12px;box-shadow:var(--shadow);max-width:280px}
.cnc-mailpop[hidden]{display:none}
.cnc-mailpop .cnc-mail-addr{font-size:17px;font-weight:700;color:#7fd8e6;word-break:break-all}
.cnc-mailpop button{margin-top:10px;background:var(--brand);color:#fff;border:0;border-radius:8px;padding:7px 14px;cursor:pointer}

/* ===== Modal ===== */
.cnc-modal{position:fixed;inset:0;z-index:70;display:flex;align-items:center;justify-content:center}
.cnc-modal[hidden]{display:none}
.cnc-modal-mask{position:absolute;inset:0;background:rgba(8,16,32,.6)}
.cnc-modal-box{position:relative;background:#fff;border-radius:14px;padding:10px;box-shadow:0 20px 60px rgba(0,0,0,.4)}
.cnc-modal-close{position:absolute;top:-14px;right:-14px;width:34px;height:34px;border-radius:50%;border:0;background:#0c1c3a;color:#fff;font-size:20px;cursor:pointer;line-height:1}
.cnc-card-img{display:block;border-radius:8px;width:300px;height:500px;object-fit:contain}

/* ===== Responsive (breakpoint 1024) ===== */
@media (max-width:1024px){
  .cnc-nav-toggle{display:block}
  .cnc-nav-list{display:none;position:absolute;top:var(--header-h);left:0;right:0;background:#0c1c3a;flex-direction:column;gap:0;padding:8px 16px}
  .cnc-nav-list.cnc-open{display:flex}
  .cnc-nav-has{position:static}
  .cnc-nav-sub{position:static;display:block;background:transparent;border:0;box-shadow:none;padding-left:12px}
  .cnc-nav-sub a{color:#bcd2ef}
  .article-layout,.product-layout{grid-template-columns:1fr}
  .list-layout{grid-template-columns:1fr}
  .toc-aside{position:static;max-height:none}
  /* IMPORTANT: do NOT display:none the toc/cat panels; they remain collapsible (M25) */
  .cnc-cap-grid{grid-template-columns:repeat(2,1fr)}
  .cnc-scene-list{grid-template-columns:1fr}
}
@media (max-width:560px){
  .cnc-hero-title{font-size:30px}
  .cnc-cap-grid{grid-template-columns:1fr}
  .page-wrap{padding:0 16px}
}