/* basetaospreadsheet.org — shared styles
   Aesthetic: warm "workshop ledger" — cream paper, ink-brown text, taobao-orange accent.
   No external font CDNs (LCP). System serif for display, system sans for body. */
:root{
  --orange:#F25C1F; --orange-d:#D2480F; --orange-soft:#FBE3D4;
  --ink:#241A12; --ink-soft:#5A4A3B; --line:#E7D8C7;
  --cream:#FBF6EF; --paper:#FFFFFF; --peach:#FAD9C8;
  --wa:#25D366; --wa-d:#1da851;
  --ok:#2E7D32; --warn:#B26A00;
  --maxw:1140px;
  --serif:"Iowan Old Style","Palatino Linotype",Palatino,Georgia,"Times New Roman",serif;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --r:14px; --sh:0 6px 24px rgba(60,30,10,.10);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--sans);color:var(--ink);background:var(--cream);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
img,video{max-width:100%;display:block}
a{color:var(--orange-d);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{font-family:var(--serif);line-height:1.15;color:var(--ink);letter-spacing:-.01em}
h1{font-size:clamp(2rem,5vw,3.1rem);margin:.2em 0 .35em}
h2{font-size:clamp(1.5rem,3.2vw,2.1rem);margin:1.6em 0 .5em}
h3{font-size:1.2rem;margin:1.2em 0 .4em}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.muted{color:var(--ink-soft)}
section{padding:8px 0}

/* top bar */
header.nav{position:sticky;top:0;z-index:50;background:rgba(251,246,239,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;gap:18px;height:64px}
.brand{font-family:var(--serif);font-weight:700;font-size:1.32rem;color:var(--ink);display:flex;align-items:center;gap:9px;text-decoration:none}
.brand b{background:var(--orange);color:#fff;border-radius:9px;width:34px;height:34px;display:grid;place-items:center;font-size:1rem}
.nav nav{margin-left:auto;display:flex;gap:20px;align-items:center}
.nav nav a{color:var(--ink-soft);font-size:.95rem;font-weight:600}
.nav nav a:hover{color:var(--orange-d);text-decoration:none}
.btn-wa{background:var(--wa);color:#fff!important;padding:9px 16px;border-radius:999px;font-weight:700;font-size:.92rem;display:inline-flex;align-items:center;gap:7px;box-shadow:0 4px 14px rgba(37,211,102,.34)}
.btn-wa:hover{background:var(--wa-d);text-decoration:none}
.menu-tog{display:none}

/* hero */
.hero{padding:30px 0 14px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:36px;align-items:center}
.eyebrow{display:inline-block;background:var(--orange-soft);color:var(--orange-d);font-weight:700;font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;padding:5px 12px;border-radius:999px;margin-bottom:12px}
.hero p.lead{font-size:1.12rem;color:var(--ink-soft);max-width:46ch}
.hero-cta{display:flex;gap:12px;flex-wrap:wrap;margin:20px 0 14px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 22px;border-radius:999px;font-weight:700;font-size:1rem;border:0;cursor:pointer}
.btn-pri{background:var(--wa);color:#fff;box-shadow:0 6px 18px rgba(37,211,102,.34)}
.btn-pri:hover{background:var(--wa-d);text-decoration:none}
.btn-sec{background:#fff;color:var(--orange-d);border:1.5px solid var(--orange)}
.btn-sec:hover{background:var(--orange-soft);text-decoration:none}
.hero-vid{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--sh);border:1px solid var(--line);background:#000;aspect-ratio:464/600}
.hero-vid video{width:100%;height:100%;object-fit:cover}
.vid-badge{position:absolute;left:12px;bottom:12px;background:rgba(0,0,0,.62);color:#fff;font-size:.78rem;font-weight:600;padding:6px 11px;border-radius:999px;backdrop-filter:blur(4px)}
.trust-row{display:flex;gap:8px;flex-wrap:wrap;margin-top:8px}
.chip{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 13px;font-size:.84rem;font-weight:600;color:var(--ink-soft)}
.chip b{color:var(--orange-d)}

/* ticker */
.ticker{background:var(--ink);color:#f4e9dd;overflow:hidden;white-space:nowrap;font-size:.86rem;border-radius:0}
.ticker .run{display:inline-block;padding:9px 0;animation:scroll 34s linear infinite}
.ticker span{margin:0 22px;opacity:.92}
@keyframes scroll{from{transform:translateX(0)}to{transform:translateX(-50%)}}

/* category grid §61 */
.cats{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.cat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:16px 10px;text-align:center;transition:transform .15s,box-shadow .15s;display:flex;flex-direction:column;align-items:center;gap:8px}
.cat:hover{transform:translateY(-3px);box-shadow:var(--sh);text-decoration:none}
.cat img{width:62px;height:62px}
.cat .nm{font-weight:700;color:var(--ink);font-size:.95rem}
.cat .pr{font-size:.8rem;color:var(--orange-d);font-weight:600}

/* product cards §61 (with photo + 2 buttons) */
.prods{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.prod{background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden;display:flex;flex-direction:column}
.prod .ph{aspect-ratio:4/3;overflow:hidden;background:var(--peach);position:relative}
.prod .ph img{width:100%;height:100%;object-fit:cover}
.prod .bd{padding:14px 16px;display:flex;flex-direction:column;gap:6px;flex:1}
.prod h3{margin:0;font-size:1.12rem}
.prod .sub{font-size:.88rem;color:var(--ink-soft);flex:1}
.prod .pr{font-weight:700;color:var(--orange-d)}
.prod .acts{display:flex;gap:8px;margin-top:8px}
.prod .acts a{flex:1;text-align:center;padding:9px;border-radius:9px;font-size:.86rem;font-weight:700}
.prod .acts .g{background:var(--orange-soft);color:var(--orange-d)}
.prod .acts .v{background:var(--ink);color:#fff}
.prod .acts a:hover{text-decoration:none;opacity:.92}

/* proof gallery §62 */
.proof{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.proof figure{margin:0;background:#fff;border:1px solid var(--line);border-radius:var(--r);overflow:hidden}
.proof .pi{aspect-ratio:1/1;overflow:hidden;position:relative}
.proof img{width:100%;height:100%;object-fit:cover}
.proof .vf{position:absolute;top:8px;left:8px;background:var(--ok);color:#fff;font-size:.7rem;font-weight:700;padding:3px 8px;border-radius:999px}
.proof figcaption{padding:9px 12px;font-size:.82rem;color:var(--ink-soft);font-weight:600}

/* steps §59 */
.steps{counter-reset:s;display:grid;grid-template-columns:repeat(5,1fr);gap:14px}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px 14px;position:relative}
.step::before{counter-increment:s;content:counter(s);position:absolute;top:-13px;left:14px;width:30px;height:30px;background:var(--orange);color:#fff;border-radius:50%;display:grid;place-items:center;font-weight:700;font-family:var(--serif)}
.step h3{margin:.4em 0 .2em;font-size:1.02rem}
.step p{font-size:.86rem;color:var(--ink-soft);margin:0}

/* generic panels */
.panel{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:22px 24px;box-shadow:var(--sh)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.badges{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;margin-top:14px}
.badge{background:var(--orange-soft);border-radius:12px;padding:12px 18px;text-align:center;min-width:130px}
.badge b{display:block;font-family:var(--serif);font-size:1.5rem;color:var(--orange-d)}
.badge span{font-size:.8rem;color:var(--ink-soft)}

/* quick answer / verdict boxes §60 */
.qa{background:var(--orange-soft);border-left:4px solid var(--orange);border-radius:0 12px 12px 0;padding:16px 20px;margin:14px 0}
.qa strong{color:var(--orange-d)}
.verdict{background:#fff;border:1px solid var(--line);border-left:4px solid var(--ok);border-radius:0 10px 10px 0;padding:12px 18px;margin:14px 0;font-weight:600}
.note{background:#fff;border:1px dashed var(--line);border-radius:10px;padding:12px 16px;font-size:.92rem;color:var(--ink-soft);margin:10px 0}

/* tables §60 */
table.cmp{width:100%;border-collapse:collapse;margin:14px 0;font-size:.93rem;background:#fff;border-radius:var(--r);overflow:hidden;border:1px solid var(--line)}
table.cmp caption{caption-side:top;text-align:left;font-weight:700;color:var(--ink-soft);font-size:.85rem;margin-bottom:6px}
table.cmp th,table.cmp td{padding:10px 13px;border-bottom:1px solid var(--line);text-align:left}
table.cmp thead th{background:var(--ink);color:#fff;font-weight:700}
table.cmp tbody tr:nth-child(even){background:var(--cream)}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;margin:10px 0;padding:2px 18px}
.faq summary{cursor:pointer;font-weight:700;padding:14px 0;list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";float:right;color:var(--orange);font-size:1.3rem;line-height:1}
.faq details[open] summary::after{content:"\2013"}
.faq details p{margin:0 0 14px;color:var(--ink-soft)}

/* breadcrumb */
.crumb{font-size:.85rem;color:var(--ink-soft);padding:14px 0 0}
.crumb a{color:var(--ink-soft)}

/* article */
article.seo{font-size:1.05rem}
article.seo p{margin:.9em 0}
article.seo ul{margin:.6em 0;padding-left:1.3em}
article.seo li{margin:.35em 0}

/* footer w/ internal-link matrix */
footer.ft{background:var(--ink);color:#cdbba8;margin-top:40px;padding:40px 0 26px;font-size:.92rem}
footer.ft a{color:#e9d8c4}
footer.ft .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:26px}
footer.ft h4{color:#fff;font-family:var(--serif);margin:0 0 12px;font-size:1.05rem}
footer.ft ul{list-style:none;padding:0;margin:0}
footer.ft li{margin:7px 0}
footer.ft .legal{border-top:1px solid #4a3a2a;margin-top:26px;padding-top:18px;font-size:.82rem;color:#9c8a76}
.lastupd{font-size:.82rem;color:var(--ink-soft)}

/* hero-cta sticky none; mobile */
@media(max-width:920px){
  .hero-grid{grid-template-columns:1fr;gap:22px}
  .hero-vid{max-width:360px;margin:0 auto;aspect-ratio:464/640}
  .cats{grid-template-columns:repeat(4,1fr)}
  .prods{grid-template-columns:1fr 1fr}
  .proof{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr 1fr}
  .grid2{grid-template-columns:1fr}
  footer.ft .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  body{font-size:16px}
  .nav nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--cream);flex-direction:column;padding:14px 22px;border-bottom:1px solid var(--line);gap:14px}
  .nav nav.open{display:flex}
  .nav nav a{font-size:1rem}
  .menu-tog{display:block;margin-left:auto;background:none;border:0;font-size:1.6rem;color:var(--ink);cursor:pointer}
  .cats{grid-template-columns:repeat(3,1fr)}
  .prods{grid-template-columns:1fr}
  .proof{grid-template-columns:1fr 1fr}
  .steps{grid-template-columns:1fr}
  footer.ft .cols{grid-template-columns:1fr}
  table.cmp{font-size:.84rem}
  table.cmp th,table.cmp td{padding:8px 9px}
}

/* category album chips */
.alb{display:inline-flex;align-items:center;gap:7px;background:linear-gradient(135deg,var(--orange-soft),#fff);border:1.5px solid var(--orange);color:var(--orange-d);font-weight:700;font-size:.9rem;padding:9px 15px;border-radius:10px;margin:5px 8px 5px 0;text-decoration:none}
.alb:hover{text-decoration:none;background:var(--orange);color:#fff}
.alb::after{content:"\2197";font-size:.85em}
.albgrp{margin:10px 0}