/* superbuyqc.org — hand-written stylesheet */
:root{
  --ink:#22303c; --ink-2:#54606b; --ink-3:#626c76;
  --bg:#ffffff; --bg-soft:#f6f7f8; --line:#e4e7ea; --line-2:#eef0f2;
  --copper:#9a4f1f; --copper-ink:#8a4718; --copper-soft:#f6ede4;
  --link:#155a9c; --link-hover:#0f4478;
  --maxw:1240px; --readw:70ch;
  --font:"Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:var(--font);font-size:16px;line-height:1.7;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--link);text-decoration:underline;text-underline-offset:2px}
a:hover{color:var(--link-hover)}
h1,h2,h3{color:var(--ink);margin:0;text-wrap:balance}
h1{font-size:48px;font-weight:800;line-height:1.15;letter-spacing:-0.02em}
h2{font-size:28px;font-weight:700;line-height:1.3}
h3{font-size:18px;font-weight:600;line-height:1.4}
p{margin:0}
ul,ol{margin:0;padding-left:1.2em}
:focus-visible{outline:3px solid var(--copper);outline-offset:2px}
.vh{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:0;background:var(--ink);color:#fff;padding:10px 16px;z-index:20;border-radius:0 0 6px 0}
.skip:focus{left:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding-inline:24px}
.wrap-read{max-width:920px}
main{display:block}

/* header */
.site-hdr{border-bottom:1px solid var(--line);background:var(--bg);position:sticky;top:0;z-index:10;top:env(safe-area-inset-top,0px)}
.hdr-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px;flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:8px;text-decoration:none;color:var(--ink);min-width:0}
.brand-name{font-weight:800;font-size:17px;letter-spacing:-0.01em}
.brand-tag{font-size:12px;font-weight:600;color:var(--copper-ink);text-transform:uppercase;letter-spacing:0.04em;white-space:nowrap}
.nav-d{position:relative}
.nav-d>summary{list-style:none;cursor:pointer;font-size:14px;font-weight:600;padding:8px 12px;border:1px solid var(--line);border-radius:8px;color:var(--ink)}
.nav-d>summary::-webkit-details-marker{display:none}
.site-nav{display:flex;gap:4px;flex-wrap:wrap}
.site-nav a{font-size:14px;font-weight:500;color:var(--ink-2);text-decoration:none;padding:8px 10px;border-radius:8px;white-space:nowrap}
.site-nav a:hover{color:var(--ink);background:var(--bg-soft)}
.site-nav a[aria-current="page"]{color:var(--copper-ink);font-weight:600}
@media(max-width:820px){
  .nav-d>nav{display:none}
  .nav-d[open]>nav{display:flex;flex-direction:column;position:absolute;right:0;top:calc(100% + 8px);background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px;min-width:220px;box-shadow:0 8px 28px rgba(20,30,40,.10);z-index:15}
}
@media(min-width:821px){ .nav-d>summary{display:none} }

/* generic stacks */
.page-head{margin:32px 0 8px}
.eyebrow{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:var(--copper-ink);margin-bottom:10px}
.lede{font-size:18px;line-height:1.6;color:var(--ink-2);margin-top:12px;max-width:66ch}
.muted{color:var(--ink-2)}
.crumbs{margin:20px 0 4px;font-size:13px}
.crumbs ol{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:6px;color:var(--ink-3)}
.crumbs li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--line)}
.crumbs a{color:var(--ink-2);text-decoration:none}
.crumbs a:hover{text-decoration:underline}

/* buttons */
.btn{display:inline-block;font-size:15px;font-weight:600;text-decoration:none;padding:11px 18px;border-radius:9px;border:1px solid transparent;line-height:1.2}
.btn-primary{background:var(--ink);color:#fff}
.btn-primary:hover{background:#16222c;color:#fff}
.btn-ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn-ghost:hover{background:var(--bg-soft);color:var(--ink)}
.textlink{font-weight:600;text-decoration:none;color:var(--link)}
.textlink:hover{text-decoration:underline}
.inline-links{display:flex;flex-wrap:wrap;gap:8px 20px;margin-top:8px}

/* search */
.search{display:flex;gap:8px;flex-wrap:wrap;margin:8px 0 4px}
.search input{flex:1 1 240px;min-width:0;font:inherit;font-size:15px;padding:11px 14px;border:1px solid var(--line);border-radius:9px;background:#fff;color:var(--ink)}
.search input:focus{outline:none;border-color:var(--copper);box-shadow:0 0 0 3px var(--copper-soft)}
.search button{font:inherit;font-size:15px;font-weight:600;padding:11px 18px;border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:9px;cursor:pointer}
.search button:hover{background:#16222c}
.search-big input{flex-basis:320px;padding:13px 16px}
.search-note{font-size:13px;color:var(--ink-3);margin:0 0 8px}

/* hero */
.hero{padding:36px 0 8px;border-bottom:1px solid var(--line-2)}
.hero .lede{font-size:19px;max-width:64ch}
.hero-links{list-style:none;padding:0;margin:16px 0 8px;display:flex;flex-wrap:wrap;gap:8px 12px}
.hero-links a{font-size:14px;font-weight:600;text-decoration:none;color:var(--ink);border:1px solid var(--line);padding:8px 14px;border-radius:999px;background:#fff}
.hero-links a:hover{background:var(--bg-soft);border-color:var(--ink-3)}

/* home sections */
main>.wrap>.home-sec{padding:0;border-top:1px solid var(--line-2);margin-top:0}
.home-sec{display:block;padding-block:36px;border-top:1px solid var(--line-2)}
.home-sec:first-of-type{border-top:0}
.secno{font-size:14px;font-weight:800;color:var(--copper);letter-spacing:0.04em;margin-bottom:8px}
.home-sec>h2{margin-bottom:12px}
.home-sec>p{max-width:72ch;margin-bottom:12px;color:var(--ink)}
.checklist{margin:12px 0;padding-left:1.2em;display:flex;flex-direction:column;gap:10px}
.checklist li{padding-left:4px}
.inline-links .textlink{white-space:normal}

/* faq lite (home) + faq page */
.faq-lite{display:flex;flex-direction:column;gap:8px;margin:8px 0 12px}
.faq-lite details{border:1px solid var(--line);border-radius:10px;padding:2px 14px;background:#fff}
.faq-lite summary{cursor:pointer;font-weight:600;padding:12px 0;list-style:none}
.faq-lite summary::-webkit-details-marker{display:none}
.faq-lite summary::after{content:"+";float:right;color:var(--copper-ink);font-weight:700}
.faq-lite details[open] summary::after{content:"–"}
.faq-lite details p{padding:0 0 14px;color:var(--ink-2)}
.faq{display:flex;flex-direction:column;gap:24px;margin-top:24px}
.faq-item h2{font-size:20px;margin-bottom:8px}
.faq-item p{color:var(--ink);margin-bottom:8px}

/* notes / callouts */
.note{border:1px solid var(--line);border-left:3px solid var(--copper);background:var(--bg-soft);border-radius:10px;padding:18px 20px;margin:20px 0}
.note-h{font-size:16px;font-weight:700;margin-bottom:8px}
.note p{color:var(--ink);margin-bottom:8px}
.note p:last-child{margin-bottom:0}
.fineprint{font-size:14px;color:var(--ink-3);line-height:1.6;margin:12px 0}

/* product grid / cards */
.grid{list-style:none;padding:0;margin:20px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px}
.card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.card-link{display:flex;flex-direction:column;height:100%;text-decoration:none;color:var(--ink)}
.card-media{display:block;aspect-ratio:1/1;background:var(--bg-soft);overflow:hidden}
.card-media img{width:100%;height:100%;object-fit:cover}
.card-body{display:flex;flex-direction:column;gap:8px;padding:14px}
.card-title{font-size:15px;font-weight:600;line-height:1.4;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-price{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.card-usd{font-weight:700}
.card-cny{font-size:13px;color:var(--ink-3)}
.tag{align-self:flex-start;font-size:12px;font-weight:600;padding:4px 9px;border-radius:999px;line-height:1.2}
.tag-yes{background:var(--copper-soft);color:var(--copper-ink)}
.tag-no{background:var(--bg-soft);color:var(--ink-3);border:1px solid var(--line)}

/* category index */
.cat-grid{list-style:none;padding:0;margin:20px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:20px}
.cat-card{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff}
.cat-card a{display:flex;flex-direction:column;text-decoration:none;color:var(--ink);height:100%}
.cat-media{aspect-ratio:16/10;background:var(--bg-soft);overflow:hidden}
.cat-media img{width:100%;height:100%;object-fit:cover}
.cat-meta{padding:14px;display:flex;flex-direction:column;gap:4px}
.cat-name{font-size:17px;font-weight:700}
.cat-count{font-size:13px;color:var(--ink-3)}
.othercats{margin:28px 0;padding-top:20px;border-top:1px solid var(--line-2);display:flex;flex-wrap:wrap;gap:8px 10px;align-items:center}
.othercats a{font-size:14px;font-weight:600;text-decoration:none;color:var(--ink);border:1px solid var(--line);padding:7px 13px;border-radius:999px}
.othercats a:hover{background:var(--bg-soft)}

/* product page */
.prod{padding-bottom:24px}
.prod-top{display:grid;grid-template-columns:minmax(0,440px) 1fr;gap:32px;align-items:start;margin-top:12px}
.prod-media img{width:100%;border:1px solid var(--line);border-radius:12px;background:var(--bg-soft)}
.img-credit{font-size:12px;color:var(--ink-3);margin-top:8px}
.prod-info h1{font-size:32px;line-height:1.2;margin-bottom:14px}
.price-block{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap;margin-bottom:6px}
.price-usd{font-size:26px;font-weight:800}
.price-cny{font-size:15px;color:var(--ink-2)}
.cta-row{display:flex;gap:12px;flex-wrap:wrap;margin:18px 0 10px}
.cta-disc{font-size:13px;color:var(--ink-3);line-height:1.6}
.prod-qc{margin:32px 0}
.prod-qc h2{margin-bottom:10px}
.qc-grid{list-style:none;padding:0;margin:16px 0;display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:12px}
.qc-item{display:block;aspect-ratio:1/1;border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--bg-soft)}
.qc-item img{width:100%;height:100%;object-fit:cover}
.prod-qc-empty{border:1px dashed var(--line);border-radius:12px;padding:20px 22px;background:var(--bg-soft)}
.prod-qc-empty p{max-width:72ch;color:var(--ink-2)}
.prod-notes{margin-top:16px}
.related{margin-top:32px;padding-top:24px;border-top:1px solid var(--line-2)}

/* articles */
.article{margin-bottom:32px}
.article>h2{font-size:24px;margin:32px 0 10px}
.article>h3{margin:22px 0 8px}
.article>p{margin:0 0 14px;max-width:var(--readw)}
.article>ul,.article>ol{max-width:var(--readw);margin:0 0 16px;display:flex;flex-direction:column;gap:8px}
.bullets{list-style:disc}
.tbl-wrap{overflow-x:auto;margin:0 0 20px;border:1px solid var(--line);border-radius:10px}
table{border-collapse:collapse;width:100%;font-size:15px}
th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--line-2);vertical-align:top}
thead th{background:var(--bg-soft);font-weight:700;font-size:13px;text-transform:uppercase;letter-spacing:0.03em;color:var(--ink-2)}
tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}
th[scope="row"]{font-weight:600;color:var(--ink)}
.verify-box{border:1px solid var(--line);background:var(--bg-soft);border-radius:12px;padding:20px 22px;margin:28px 0}
.verify-box h2{font-size:18px;margin-bottom:10px}
.verify-box p{font-size:15px;color:var(--ink-2);margin-bottom:8px;max-width:none}
.verify-box p:last-child{margin-bottom:0}
.guide-more,.guide-list{margin-top:24px}
.guide-more{display:flex;flex-direction:column;gap:6px;border-top:1px solid var(--line-2);padding-top:18px}
.guide-more a{font-weight:600;text-decoration:none}
.guide-more a:hover{text-decoration:underline}
.guide-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:20px}
.guide-card{border:1px solid var(--line);border-radius:12px;padding:18px 20px;background:#fff}
.guide-card h2{font-size:19px;margin-bottom:6px}
.guide-card h2 a{text-decoration:none}
.guide-card h2 a:hover{text-decoration:underline}
.guide-card p{color:var(--ink-2);max-width:72ch}
.ftr-h{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;color:var(--ink-2);margin:0 0 4px}

/* legal blocker */
.blocker{border:1px solid var(--copper);background:var(--copper-soft);border-radius:12px;padding:18px 22px;margin:18px 0}
.blocker p{margin:0;color:var(--copper-ink)}
.outstanding{font-weight:700;color:var(--copper-ink)}
.src-note{font-size:13px;color:var(--ink-3);margin-top:18px}

/* footer */
.site-ftr{border-top:1px solid var(--line);background:var(--bg-soft);margin-top:40px;padding-block:36px calc(28px + env(safe-area-inset-bottom,0px))}
.ftr-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px}
.ftr-brand{font-weight:800;margin:0 0 8px}
.ftr-ind{font-size:14px;color:var(--ink-2);margin:0 0 8px;max-width:44ch}
.ftr-comm{font-size:13px;color:var(--ink-3);max-width:44ch}
.site-ftr nav{display:flex;flex-direction:column;gap:7px}
.site-ftr nav a{font-size:14px;color:var(--ink-2);text-decoration:none}
.site-ftr nav a:hover{color:var(--ink);text-decoration:underline}
.ftr-btm{margin-top:28px;padding-top:20px;border-top:1px solid var(--line)}
.ftr-btm p{font-size:12.5px;color:var(--ink-3);line-height:1.6;margin:0 0 8px;max-width:100ch}

/* responsive */
@media(max-width:820px){
  h1{font-size:32px;line-height:1.2}
  h2{font-size:22px}
  h3{font-size:16px}
  body{font-size:15px;line-height:1.6}
  .lede,.hero .lede{font-size:16px}
  .wrap{padding-inline:16px}
  .prod-top{grid-template-columns:1fr;gap:20px}
  .prod-media{max-width:440px}
  .prod-info h1{font-size:26px}
  .price-usd{font-size:22px}
  .grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
  .ftr-grid{grid-template-columns:1fr 1fr;gap:22px}
  .home-sec{padding-block:28px}
  .hero{padding:24px 0 4px}
}
@media(max-width:480px){
  .ftr-grid{grid-template-columns:1fr}
  .grid{grid-template-columns:1fr 1fr;gap:12px}
}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}