/* weidian-global.com · Weidian Spreadsheet Worldwide · prefix ckh- · 2026-10-21
   Palette follows weidian.com (style.md): red #fc283e, deep #ba2431, link #297ce6,
   text #222/#404040, bg #fff, dark footer #120c0b. */
:root{
  --ckh-red:#fc283e; --ckh-red-deep:#ba2431; --ckh-red-mid:#dc2a3a;
  --ckh-blue:#297ce6; --ckh-ink:#222; --ckh-body:#404040; --ckh-mut:#737373;
  --ckh-line:#e6e6e6; --ckh-wash:#faf7f6; --ckh-foot:#120c0b;
  --ckh-r:4px; --ckh-w:1060px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  color:var(--ckh-body);background:#fff;font-size:17px;line-height:1.65}
h1,h2,h3{color:var(--ckh-ink);line-height:1.25;font-weight:700}
h1{font-size:34px;margin:0 0 10px}
h2{font-size:26px;margin:0 0 14px}
h3{font-size:19px;margin:0 0 8px}
p{margin:0 0 14px}
a{color:var(--ckh-blue)}
a:hover{color:var(--ckh-red-deep)}
img{max-width:100%;height:auto;display:block}
.ckh-skip{position:absolute;left:-9999px;top:0;background:#fff;color:var(--ckh-ink);padding:10px 16px;z-index:99}
.ckh-skip:focus{left:8px}
.ckh-in{max-width:var(--ckh-w);margin:0 auto;padding-left:22px;padding-right:22px}

/* header */
.ckh-top{border-bottom:1px solid var(--ckh-line);background:#fff}
.ckh-topin{max-width:var(--ckh-w);margin:0 auto;padding:10px 22px;display:flex;align-items:center;gap:18px;flex-wrap:wrap}
.ckh-brand{display:flex;align-items:center;gap:9px;text-decoration:none;color:var(--ckh-ink);font-weight:700;font-size:17px;min-height:44px}
.ckh-brand img{width:45px;height:24px;object-fit:contain}
.ckh-nav{display:flex;gap:4px;margin-left:auto;flex-wrap:wrap}
.ckh-nav a{text-decoration:none;color:var(--ckh-ink);padding:10px 11px;min-height:44px;min-width:44px;
  display:inline-flex;align-items:center;justify-content:center;border-radius:var(--ckh-r);font-size:15.5px}
.ckh-nav a:hover{background:var(--ckh-wash);color:var(--ckh-red-deep)}
.ckh-nav a[aria-current="page"]{color:var(--ckh-red-deep);font-weight:700}

/* hero */
.ckh-hero{background:linear-gradient(180deg,#fff 0%,var(--ckh-wash) 100%);border-bottom:1px solid var(--ckh-line)}
.ckh-heroin{max-width:var(--ckh-w);margin:0 auto;padding:40px 22px 26px}
.ckh-lede{font-size:19px;max-width:820px;margin:0 0 20px}
button,input,select,textarea{font-family:inherit}
.ckh-search{display:flex;gap:10px;max-width:760px;width:100%}
.ckh-search input[type="search"]{flex:1;min-width:0;padding:14px 16px;font-size:17px;border:2px solid var(--ckh-red);
  border-radius:var(--ckh-r);background:#fff;color:var(--ckh-ink)}
.ckh-search input[type="search"]:focus{outline:3px solid rgba(252,40,62,.25)}
.ckh-search button{background:var(--ckh-red);color:#fff;border:0;border-radius:var(--ckh-r);
  padding:14px 26px;font-size:17px;font-weight:700;cursor:pointer;min-height:44px}
.ckh-search button:hover{background:var(--ckh-red-deep)}
.ckh-hint{font-size:14.5px;color:var(--ckh-mut);margin:9px 0 0}
.ckh-subnav{display:flex;gap:22px;flex-wrap:wrap;margin:20px 0 0;padding:0}
.ckh-subnav a{font-size:15.5px;color:var(--ckh-ink);text-decoration:underline;text-underline-offset:3px;
  min-height:44px;min-width:44px;display:inline-flex;align-items:center}
.ckh-subnav a:hover{color:var(--ckh-red-deep)}

/* category wall */
.ckh-wall{padding:34px 0 10px}
.ckh-wallgrid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin:18px 0 6px;padding:0;list-style:none}
.ckh-card{border:1px solid var(--ckh-line);border-radius:var(--ckh-r);overflow:hidden;background:#fff;
  display:flex;flex-direction:column;transition:box-shadow .15s}
.ckh-card:hover{box-shadow:0 3px 14px rgba(34,34,34,.12)}
.ckh-card img{display:block;width:100%;aspect-ratio:1/1;object-fit:cover;height:auto}
.ckh-card a{display:flex;flex-direction:column;flex:1;color:var(--ckh-ink);text-decoration:none}
.ckh-cardbody{padding:10px 12px 12px;display:flex;flex-direction:column;gap:3px;flex:1}
.ckh-cardname{font-weight:700;font-size:16px;min-height:28px;display:flex;align-items:center}
.ckh-card a:hover .ckh-cardname{color:var(--ckh-red-deep)}
.ckh-card a:focus-visible{outline:2px solid var(--ckh-red);outline-offset:-2px}
.ckh-badge{font-size:12.5px;color:var(--ckh-mut);text-transform:uppercase;letter-spacing:.04em}

/* sections */
.ckh-sec{padding:34px 0}
.ckh-sec.ckh-alt{background:var(--ckh-wash);border-top:1px solid var(--ckh-line);border-bottom:1px solid var(--ckh-line)}
.ckh-duo{display:grid;grid-template-columns:560px 1fr;gap:40px;align-items:stretch}
.ckh-duo.ckh-flip{grid-template-columns:1fr 560px}
.ckh-duo figure{margin:0;display:flex;flex-direction:column}
/* side-by-side figures stretch to the text column; contain (never cover) so no part of the bitmap is cut. Drawn figures are white-ground PNGs; product photos get a light mat. */
.ckh-duo figure img{height:100%;object-fit:contain;background:#fff;border:1px solid var(--ckh-line);border-radius:var(--ckh-r);flex:1}
.ckh-duo figure img[src*="/img/p/"]{background:var(--ckh-wash)}
.ckh-duo figcaption,.ckh-wide figcaption{font-size:14px;color:var(--ckh-mut);padding:7px 2px 0}
.ckh-wide{margin:18px 0 0}
.ckh-wide img{width:100%;border:1px solid var(--ckh-line);border-radius:var(--ckh-r)}
.ckh-note{border-left:4px solid var(--ckh-red);background:#fff;padding:12px 16px;margin:14px 0;font-size:16px}
.ckh-alt .ckh-note{background:#fff}
ul.ckh-list{margin:0 0 14px;padding-left:22px}
ul.ckh-list li{margin:0 0 8px}

/* route strip (signature) */
.ckh-route{display:grid;grid-template-columns:repeat(7,1fr);gap:0;counter-reset:stop;margin:20px 0 4px;padding:0;list-style:none}
.ckh-route li{counter-increment:stop;border-top:4px solid var(--ckh-red);padding:12px 10px 6px;position:relative;background:#fff;border-right:1px dashed var(--ckh-line)}
.ckh-route li:last-child{border-right:0}
.ckh-route li::before{content:counter(stop,decimal-leading-zero);font-weight:700;color:var(--ckh-red);font-size:14px;letter-spacing:.06em}
.ckh-route b{display:block;color:var(--ckh-ink);font-size:15px;margin:2px 0 3px}
.ckh-route span{font-size:13.5px;color:var(--ckh-mut);display:block;line-height:1.45}

/* shelves on /spreadsheet/ */
.ckh-shelf{border:1px solid var(--ckh-line);border-radius:var(--ckh-r);padding:16px 18px;margin:0 0 18px;background:#fff}
.ckh-shelfhead{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.ckh-shelfhead h3{margin:0}
.ckh-shelfhead a{margin-left:auto;font-size:15px;min-height:44px;min-width:44px;display:inline-flex;align-items:center}
.ckh-strip{display:grid;grid-template-columns:repeat(5,1fr);gap:10px;margin:12px 0 8px}
.ckh-strip img{width:100%;aspect-ratio:1/1;object-fit:cover;border:1px solid var(--ckh-line);border-radius:var(--ckh-r);height:auto}
.ckh-counter{background:var(--ckh-wash);border:1px dashed #d9c9c9;border-radius:var(--ckh-r);padding:9px 12px;font-size:14.5px;color:var(--ckh-body)}

/* desks (agents signature) */
.ckh-desks{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:16px 0}
.ckh-desk{border:1px solid var(--ckh-line);border-top:4px solid var(--ckh-red);border-radius:var(--ckh-r);padding:16px 18px;background:#fff}
.ckh-desk h3{display:flex;align-items:baseline;gap:8px}
.ckh-desk .ckh-cta{margin-top:10px}
.ckh-cta{display:inline-flex;align-items:center;justify-content:center;background:var(--ckh-red);color:#fff;
  text-decoration:none;font-weight:700;padding:11px 20px;border-radius:var(--ckh-r);min-height:44px;font-size:16px}
.ckh-cta:hover{background:var(--ckh-red-deep);color:#fff}
.ckh-cta.ckh-ghost{background:#fff;color:var(--ckh-red-deep);border:2px solid var(--ckh-red)}

/* tables */
.ckh-tbl{width:100%;border-collapse:collapse;margin:14px 0;font-size:15.5px;background:#fff}
.ckh-tbl th{background:var(--ckh-foot);color:#fff;text-align:left;padding:9px 11px;font-size:14.5px}
.ckh-tbl td{border:1px solid var(--ckh-line);padding:9px 11px;vertical-align:top}
.ckh-tbl tr:nth-child(even) td{background:var(--ckh-wash)}
.ckh-tblwrap{overflow-x:auto}

/* calculator */
.ckh-calc{border:1px solid var(--ckh-line);border-radius:var(--ckh-r);padding:18px;background:#fff;display:grid;gap:12px}
.ckh-calc label{font-size:15px;color:var(--ckh-ink);display:grid;gap:4px}
.ckh-calc input,.ckh-calc select{padding:10px;border:1px solid #bbb;border-radius:var(--ckh-r);font-size:16px;min-height:44px;width:100%}
.ckh-calcrow{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.ckh-calcrow2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ckh-calc output{font-size:17px;color:var(--ckh-ink);background:var(--ckh-wash);border-radius:var(--ckh-r);padding:12px 14px;display:block}
.ckh-calc button{background:var(--ckh-red);color:#fff;border:0;border-radius:var(--ckh-r);padding:12px 20px;font-weight:700;font-size:16px;cursor:pointer;min-height:44px}

/* faq / glossary */
.ckh-qa{border-bottom:1px solid var(--ckh-line);padding:14px 0}
.ckh-qa h3{margin:0 0 6px}
dl.ckh-gloss{margin:0}
dl.ckh-gloss dt{font-weight:700;color:var(--ckh-ink);margin:12px 0 2px}
dl.ckh-gloss dd{margin:0 0 6px}

/* media slots (hidden until user provides assets) */
.ckh-vslot,[hidden].ckh-vslot{aspect-ratio:16/9;width:100%;border-radius:var(--ckh-r);overflow:hidden}
figure.ckh-gslot{aspect-ratio:1440/900;width:100%;margin:0;border-radius:var(--ckh-r);overflow:hidden}

/* footer */
.ckh-foot{background:var(--ckh-foot);color:#ddd;margin-top:44px}
.ckh-footin{max-width:var(--ckh-w);margin:0 auto;padding:30px 22px;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:26px}
.ckh-foot a{color:#ddd;text-decoration:underline;text-underline-offset:3px;display:inline-flex;min-height:44px;align-items:center}
.ckh-foot a:hover{color:#fff}
.ckh-foot p{font-size:14.5px;color:#cacaca}
.ckh-foot ul{list-style:none;margin:0;padding:0}
.ckh-footname{color:#fff;font-weight:700;font-size:16.5px;margin:0 0 8px}
.ckh-legal{border-top:1px solid #2d2422;margin-top:8px}
.ckh-legal p{max-width:var(--ckh-w);margin:0 auto;padding:14px 22px;font-size:13.5px;color:#a89f9d}

/* breadcrumbs */
.ckh-crumbs{font-size:14px;color:var(--ckh-mut);padding:14px 0 0}
.ckh-crumbs a{color:var(--ckh-mut)}
.ckh-pagehead{padding:10px 0 26px}
.ckh-pagehead p.ckh-lede{margin-bottom:0}

/* responsive */
@media (max-width:1100px){
  .ckh-duo,.ckh-duo.ckh-flip{grid-template-columns:1fr 1fr;gap:26px}
  .ckh-route{grid-template-columns:repeat(4,1fr)}
  .ckh-route li{border-bottom:1px dashed var(--ckh-line)}
}
@media (max-width:860px){
  .ckh-wallgrid{grid-template-columns:repeat(3,1fr)}
  .ckh-duo,.ckh-duo.ckh-flip{grid-template-columns:1fr}
  .ckh-duo figure img{min-height:220px}
  .ckh-desks{grid-template-columns:1fr}
  .ckh-footin{grid-template-columns:1fr 1fr}
  .ckh-strip{grid-template-columns:repeat(4,1fr)}
  .ckh-calcrow,.ckh-calcrow2{grid-template-columns:1fr}
}
@media (max-width:560px){
  h1{font-size:27px}
  h2{font-size:22px}
  .ckh-wallgrid{grid-template-columns:repeat(2,1fr)}
  .ckh-route{grid-template-columns:repeat(2,1fr)}
  .ckh-strip{grid-template-columns:repeat(3,1fr)}
  .ckh-search{flex-direction:column}
  .ckh-search button{width:100%}
  .ckh-footin{grid-template-columns:1fr}
  .ckh-crumbs{padding-top:4px}
  .ckh-crumbs a{display:inline-flex;align-items:center;min-height:44px;min-width:44px}
}