:root{
  --paper:#f7fbff;
  --surface:#ffffff;
  --ink:#10213f;
  --muted:#526985;
  --accent:#1666ff;
  --accent-2:#65d46e;
  --line:#cfdef2;
  --line-strong:#a7bee0;
  --shadow:0 24px 70px rgba(22,102,255,.13);
  --max:1240px;
  --radius:26px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;line-height:1.65;text-rendering:optimizeLegibility}
a{color:inherit}
.container{width:min(calc(100% - 48px),var(--max));margin:auto}
.skip-link{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.skip-link:focus{z-index:1600;width:auto;height:auto;inset-block-start:8px;inset-inline-start:8px;padding:10px 14px;background:#fff;clip-path:none;border:1px solid var(--line);border-radius:12px}
.site-header{position:sticky;top:0;z-index:1200;background:rgba(247,251,255,.92);border-bottom:1px solid rgba(207,222,242,.9);backdrop-filter:blur(16px);box-shadow:0 10px 30px rgba(16,33,63,.04)}
.header-inner{min-height:72px;display:flex;align-items:center;gap:22px}
.brand{text-decoration:none;width:auto;height:auto;display:inline-flex;align-items:center}
.brand-wordmark{display:flex;flex-direction:column;white-space:nowrap;letter-spacing:-.02em}
.brand-name{font-weight:950;line-height:.9;font-size:1.28rem}
.brand-descriptor{font-size:.58rem;letter-spacing:.18em;color:var(--accent);font-weight:850;margin-top:5px}
#site-nav{display:flex;align-items:center;gap:10px;margin-left:auto}
#site-nav a{font-size:.9rem;font-weight:760;text-decoration:none;color:#25425f;padding:10px 8px;border-radius:999px}
#site-nav a:hover,#site-nav a[aria-current=page]{background:#eaf3ff;color:var(--ink)}
.nav-cta{background:var(--ink)!important;color:#fff!important;border:1px solid var(--ink)!important;padding:10px 14px!important}
.menu-toggle{display:none;margin-left:auto;min-width:44px;min-height:44px;border:1px solid var(--line);background:#fff;border-radius:999px;color:var(--ink);font-weight:850}
.hero{border:0;position:relative;overflow:hidden;background:
  radial-gradient(circle at 50% 18%,rgba(22,102,255,.14),transparent 34%),
  radial-gradient(circle at 78% 22%,rgba(101,212,110,.18),transparent 26%),
  linear-gradient(180deg,#f7fbff 0%,#eef6ff 58%,#f7fbff 100%)}
.hero:before{content:"";position:absolute;inset:0;background:
  linear-gradient(90deg,rgba(16,33,63,.045) 1px,transparent 1px),
  linear-gradient(180deg,rgba(16,33,63,.035) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(circle at 50% 18%,rgba(0,0,0,.42),transparent 60%);
  pointer-events:none}
.hero:after{content:"CSSBUY";position:absolute;left:50%;top:54%;transform:translate(-50%,-50%);font-size:clamp(7rem,20vw,19rem);font-weight:950;letter-spacing:-.09em;color:rgba(22,102,255,.045);line-height:1;white-space:nowrap;pointer-events:none}
.hero-inner{position:relative;z-index:1;min-height:660px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:96px 0 84px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;margin:0 0 18px;padding:8px 12px;border:1px solid rgba(22,102,255,.2);border-radius:999px;background:rgba(255,255,255,.72);color:var(--accent);font-size:.78rem;font-weight:900;letter-spacing:.13em;text-transform:uppercase}
.eyebrow:before{content:"";width:8px;height:8px;border-radius:50%;background:var(--accent-2);box-shadow:0 0 0 5px rgba(101,212,110,.18)}
h1{font-size:clamp(2.65rem,6.8vw,6.35rem);line-height:.93;letter-spacing:-.07em;max-width:980px;margin:0 0 20px;font-weight:950}
h1+p,.hero-inner>p:not(.eyebrow){max-width:760px;margin:0 auto 8px;color:var(--muted);font-size:clamp(1rem,1.35vw,1.2rem)}
.actions,.help-inner{display:flex;gap:12px;align-items:center;justify-content:center;flex-wrap:wrap}
.button,.nav-cta,.customer-help a,.category-cta{display:inline-flex;min-height:48px;align-items:center;justify-content:center;padding:11px 17px;border:1px solid var(--ink);border-radius:999px;text-decoration:none;font-weight:850;transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.button:hover,.category-cta:hover,.customer-help a:hover{transform:translateY(-1px);box-shadow:0 12px 28px rgba(16,33,63,.12)}
.primary,.nav-cta{background:var(--accent);color:#fff;border-color:var(--accent)}
.button:not(.primary){background:#fff;color:var(--ink);border-color:var(--line-strong)}
.section{padding:78px 0;border-bottom:1px solid rgba(207,222,242,.8)}
.section:nth-of-type(even){background:rgba(255,255,255,.42)}
.section h2{font-size:clamp(1.75rem,3vw,3rem);line-height:1.05;letter-spacing:-.045em;margin:0 0 24px}
.prose{max-width:840px}
.prose p{color:var(--muted);font-size:1.04rem}
details{background:#fff;border:1px solid var(--line);border-radius:18px;padding:18px 20px;margin:12px 0;box-shadow:0 10px 34px rgba(16,33,63,.04)}
summary{cursor:pointer;font-weight:900}
details p{color:var(--muted)}
.category-section .container>h2{max-width:720px}
.category-grid[data-category-grid]{display:grid;grid-template-columns:repeat(var(--category-desktop-columns,4),minmax(0,1fr));grid-auto-rows:1fr;gap:18px}
.category-card{display:flex;min-width:0;height:100%;flex-direction:column;padding:22px;border:1px solid var(--line);border-radius:22px;background:linear-gradient(180deg,#fff,#fafdff);box-shadow:0 16px 44px rgba(16,33,63,.07)}
.category-icon-container{display:grid;width:48px;height:48px;flex:0 0 48px;place-items:center;margin-bottom:16px;color:var(--accent);border:1px solid rgba(22,102,255,.18);border-radius:16px;background:#eef6ff}
.category-icon{display:block;width:28px;height:28px;overflow:visible}
.category-card h3{min-height:2.8em;margin:0 0 8px;line-height:1.28;font-size:1.1rem;letter-spacing:-.02em}
.category-card p{flex:1;margin:0 0 18px;color:var(--muted);font-size:.95rem;line-height:1.55}
.category-card .category-cta{margin-top:auto;border-color:#c6d8ef;background:#fff;color:var(--accent);min-height:44px;padding:9px 14px;font-size:.92rem}
.verified-product-search{width:min(100%,760px);margin:26px auto 20px;padding:10px;border:1px solid rgba(22,102,255,.16);border-radius:26px;background:rgba(255,255,255,.84);box-shadow:var(--shadow)}
.verified-product-search label{display:block;text-align:left;font-weight:900;margin:2px 10px 8px;color:#28435e;font-size:.86rem}
.verified-product-search div{display:flex;gap:8px}
.verified-product-search input{min-width:0;flex:1;min-height:54px;padding:12px 16px;border:1px solid var(--line);border-radius:18px;background:#f8fbff;color:var(--ink);font-size:1rem}
.verified-product-search button{min-height:54px;padding:12px 20px;background:var(--accent);color:#fff;border:1px solid var(--accent);border-radius:18px;font-weight:900}
.related-pages ul{display:grid;gap:12px;padding:0;list-style:none}
.related-pages a{display:block;padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:16px;text-decoration:none;font-weight:850}
.customer-help{padding:40px 0;background:#eaf4ff;border-top:1px solid var(--line)}
.help-inner{justify-content:space-between}
.customer-help h2{margin:0 0 4px}
.customer-help p{margin:0;color:var(--muted)}
.customer-help .help-inner>div:last-child{display:flex;gap:10px}
.customer-help a{background:#fff;border-color:var(--line-strong);color:var(--ink)}
footer{padding:58px 0;background:#0b1932;color:#dce8f7}
footer .brand-name{color:#fff}
footer .brand-descriptor{color:#65d46e}
.footer-grid{display:grid;grid-template-columns:1.15fr 1.2fr .75fr;gap:36px}
footer p{color:#adc0d6}
footer nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 16px}
footer nav a{color:#dce8f7;text-decoration:none}
footer .button.primary{background:#fff;color:#0b1932;border-color:#fff}
:focus-visible{outline:3px solid var(--accent-2);outline-offset:3px}
@media(min-width:900px) and (max-width:1599px){.category-grid[data-category-grid]{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(min-width:600px) and (max-width:899px){.category-grid[data-category-grid]{grid-template-columns:repeat(2,minmax(0,1fr))}.section{padding:62px 0}}
@media(max-width:900px){#site-nav{gap:6px}.header-inner{min-height:68px}}
@media(max-width:800px){
  .container{width:min(calc(100% - 32px),var(--max))}
  .menu-toggle{display:block}
  #site-nav{display:none;position:fixed;z-index:1300;left:16px;right:16px;top:76px;padding:14px;background:#fff;flex-direction:column;align-items:stretch;border:1px solid var(--line);border-radius:22px;box-shadow:0 24px 70px rgba(16,33,63,.18)}
  #site-nav.open{display:flex}
  #site-nav a{padding:11px 13px}
  .hero-inner{min-height:0;padding:74px 0 64px}
  .hero:after{font-size:22vw;top:48%;letter-spacing:-.1em}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:599px){
  .site-header .brand-descriptor{display:none}
  .brand-name{font-size:1.15rem}
  .actions,.help-inner{align-items:stretch;flex-direction:column}
  .button{justify-content:center;width:100%}
  .category-grid[data-category-grid]{grid-template-columns:minmax(0,1fr)}
  .category-card h3{min-height:0}
  .verified-product-search div{flex-direction:column}
  .verified-product-search button{width:100%}
  .footer-grid{grid-template-columns:1fr}
  footer nav{grid-template-columns:1fr}
}

/* CSSBuy homepage SEO content rhythm */
.section-kicker{
  margin:0 0 12px;
  color:var(--accent);
  font-size:.78rem;
  font-weight:950;
  letter-spacing:.14em;
  text-transform:uppercase;
}
.split-content{
  display:grid;
  grid-template-columns:minmax(260px,.82fr) minmax(0,1.18fr);
  gap:clamp(28px,5vw,72px);
  align-items:start;
}
.split-content .prose{max-width:none}
.split-content .prose a,.section-note a{font-weight:900;color:var(--accent);text-decoration-thickness:2px;text-underline-offset:3px}
.step-grid,.guidance-grid,.insight-list{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:16px;
}
.step-grid article,.guidance-grid>div,.insight-list article{
  min-width:0;
  height:100%;
  padding:22px;
  border:1px solid var(--line);
  border-radius:22px;
  background:#fff;
  box-shadow:0 14px 38px rgba(16,33,63,.055);
}
.step-grid span{
  display:inline-flex;
  width:38px;
  height:38px;
  align-items:center;
  justify-content:center;
  border-radius:14px;
  background:#eaf3ff;
  color:var(--accent);
  font-weight:950;
  margin-bottom:14px;
}
.step-grid h3,.guidance-grid h3,.insight-list h3{
  margin:0 0 9px;
  line-height:1.22;
  letter-spacing:-.025em;
}
.step-grid p,.guidance-grid p,.insight-list p,.section-note{
  margin:0;
  color:var(--muted);
  font-size:.96rem;
}
.guidance-section .section-note{
  margin-top:20px;
  padding:18px 20px;
  border:1px solid rgba(22,102,255,.16);
  border-radius:18px;
  background:#fff;
}
.disclosure-section{
  background:linear-gradient(180deg,#f7fbff,#edf6ff);
}
.disclosure-section .prose{
  max-width:820px;
  padding:24px;
  border:1px solid rgba(22,102,255,.14);
  border-radius:22px;
  background:rgba(255,255,255,.72);
}
.disclosure-section h2{
  font-size:clamp(1.45rem,2.2vw,2rem);
}
@media(max-width:1020px){
  .step-grid,.guidance-grid,.insight-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split-content{grid-template-columns:1fr;gap:22px}
}
@media(max-width:599px){
  .step-grid,.guidance-grid,.insight-list{grid-template-columns:1fr}
  .step-grid article,.guidance-grid>div,.insight-list article{padding:18px}
  .disclosure-section .prose{padding:18px}
}

.marketplace-list{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:18px;
}
.marketplace-list span{
  display:inline-flex;
  align-items:center;
  min-height:38px;
  padding:8px 14px;
  border:1px solid rgba(22,102,255,.18);
  border-radius:999px;
  background:#fff;
  color:var(--accent);
  font-weight:900;
  font-size:.9rem;
}
.section-lead{
  max-width:900px;
  color:var(--muted);
  font-size:1.04rem;
}