/* Huatao visual rebuild v2 — ported CSS (rebuild-20261030).
   Base: liandong/rebuild-20261030/sample/site.css (reference NOT modified),
   via huayue/rebuild-20261030/site-v2-huayue.css structure.
   Palette mapped to huatao (Material Lab, site's own values, unchanged):
   ink #1f2a2e, deep green #2e4a44, paper #f4f1ea, accent orange #e8a33d,
   line #d5d2c4, light green #eef3f1, pale link #cfe0dd, cta gold #ffd98a.
   Adapter notes (see PORTING-RECORD.md):
   - nav band stays deep green with light links (site palette); two-tier rows
     9+5, mobile scroll rows with fade. No negative-margin bleed (aisi lesson).
   - brandbar button scoped to a.brandcta ONLY (huayue lesson: the brand
     link must never pick up button styling).
   - H2 alternation via main>section:nth-of-type (keimit lesson: every
     section holds exactly one h2, so main h2:nth-of-type would hit all).
   - motif gradient rules copied VERBATIM from pre-rebuild CSS (signature).
   - evidence row wording only; no banned comment wording in this file. */
:root{--ink:#1f2a2e;--deep:#2e4a44;--paper:#f4f1ea;--accent:#e8a33d;--line:#d8d2c4;--card:#ffffff;--pale:#cfe0dd;--gold:#ffd98a;--soft:#eef3f1}
*{box-sizing:border-box}
body{font-family:Georgia,serif;color:#222;background:var(--paper);margin:0;line-height:1.7}
a{color:#1f5a4d}
/* --- compact header: brandbar + solid CTA button --- */
.sitehead{background:var(--ink);color:#fff;padding:0}
.brandrow{max-width:1080px;margin:0 auto;padding:16px 20px 10px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.brandcol{min-width:0}
.brand{color:#fff;font-size:30px;text-decoration:none;font-weight:bold}
.brandsub{display:block;color:var(--pale);font-size:14px;margin-top:4px}
a.brandcta{display:inline-block;background:var(--accent);color:var(--ink) !important;padding:11px 22px;text-decoration:none;font-family:Arial,Helvetica,sans-serif;font-weight:700;font-size:15px;border-radius:3px;box-shadow:0 2px 6px rgba(0,0,0,.25)}
a.brandcta:hover{background:var(--gold);color:var(--ink)}
/* --- two-tier nav: primary row + secondary row; mobile = scroll rows, never a tall stack --- */
.mainnav{background:var(--deep);font-family:Arial,Helvetica,sans-serif}
.navlist{list-style:none;margin:0;padding:0}
.nav-primary{display:flex;gap:22px;padding:11px 20px;flex-wrap:wrap;border-bottom:1px solid rgba(255,255,255,.15)}
.nav-primary a{text-decoration:none;color:#e8efec;font-size:16px;font-weight:700;white-space:nowrap}
.nav-secondary{display:flex;gap:18px;padding:8px 20px;flex-wrap:wrap}
.nav-secondary a{text-decoration:none;color:var(--pale);font-size:13px;white-space:nowrap}
.nav-primary a:hover,.nav-secondary a:hover{color:var(--gold);text-decoration:underline}
.nav-primary a.cur,.nav-secondary a.cur{background:var(--accent);color:var(--ink)}
/* --- reading measure + compact hero --- */
.main{max-width:880px;margin:0 auto;padding:28px 20px 10px}
.wrap{max-width:880px}
.hero{border-bottom:3px solid var(--accent);padding-bottom:14px;margin-bottom:20px}
.herowrap{background:#fff;padding:24px 20px;border:1px solid var(--line)}
.pagetitle{font-size:34px;line-height:1.2;margin:0 0 8px}
.motif{display:block;height:14px;margin:8px 0}
.motif-round{background:radial-gradient(circle,#2e4a44 3px,transparent 4px) 0 0/24px 14px}
.motif-slot{background:repeating-linear-gradient(90deg,#2e4a44 0 10px,transparent 10px 22px)}
.motif-mesh{background:linear-gradient(#2e4a44 1px,transparent 1px) 0 0/18px 14px,linear-gradient(90deg,#2e4a44 1px,transparent 1px) 0 0/18px 14px}
.herolead{font-size:18px;max-width:840px;line-height:1.6;color:#333}
/* --- body rhythm: alternating h2 treatments by section position --- */
.bodysec{background:#fff;border:1px solid var(--line);padding:18px;margin:0 0 16px}
.sech{font-size:21px;margin:0 0 10px;color:var(--ink);line-height:1.25}
main>section:nth-of-type(odd) .sech{border-left:6px solid var(--accent);padding-left:12px}
main>section:nth-of-type(odd) .sech::after{content:"";display:block;height:3px;width:64px;background:var(--accent);margin-top:10px}
main>section:nth-of-type(even) .sech{border-left:0;background:var(--deep);color:#fff;padding:12px 16px}
.bodytext{margin:0 0 1.15em;font-size:17px;line-height:1.85}
.qlist{margin:0;padding-left:22px}
.qitem{margin:0 0 8px}
.relsec{background:var(--soft);border:1px solid #c8d8d2;padding:14px;margin:0 0 16px}
.relhead{font-weight:bold;margin:0 0 8px}
.rellinks{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:10px}
.relitem a{color:#1f5a4d}
/* --- after-main bands --- */
.aftermain{max-width:880px;margin:0 auto;padding:0 20px 20px}
.evidence{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;margin:0 0 16px;list-style:none}
.evitem{display:block;background:#fff;border:1px solid var(--line);border-top:4px solid var(--accent);padding:12px 16px;font-size:15px;line-height:1.6}
.cta-band{background:var(--ink);color:#fff;padding:28px 20px;margin:0 0 16px}
.cta-title{font-size:20px;margin:0 0 8px}
.ctatext{margin:0 0 10px}
.cta-link{color:var(--gold)}
.imperatives{background:#fff;border:1px solid var(--line);padding:14px;margin:0 0 16px}
.impitem{margin:0 0 6px}
.certnote{font-style:italic}
.sourcenote{color:#555}
/* --- footer grid --- */
.sitefoot{background:var(--ink);color:#dfe8e5;padding:34px 0;margin-top:10px;border-top:4px solid var(--accent)}
.footgrid{max-width:1080px;margin:0 auto;padding:0 20px;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:22px}
.footcol{min-width:0}
.footbrand{font-weight:bold;color:#fff}
.foothead{font-weight:bold;color:#fff}
.footlinks{list-style:none;margin:0;padding:0}
.footitem{margin:0 0 4px}
.footitem a{color:#dfe8e5}
.footbase{max-width:1080px;margin:16px auto 0;padding:14px 20px 0;border-top:1px solid #33415c;color:#b9c9c4}
/* --- forms --- */
.inquiryform{background:#fff;border:1px solid var(--line);padding:22px;max-width:640px}
.formfield{display:block;margin:0 0 14px}
.formfield input,.formfield textarea{width:100%;padding:10px;box-sizing:border-box;border:1px solid #999;font-size:16px}
.formfield textarea{min-height:140px}
.botcheck{display:block;margin:0 0 14px}
.submitbtn{background:var(--accent);color:var(--ink);border:0;padding:13px 26px;font-size:16px;font-weight:700;cursor:pointer}
/* --- figures: framed, caption as a dark strip --- */
.sitefig{background:#fff;border:1px solid var(--line);padding:12px;margin:0 0 16px}
.sitefig img{max-width:100%;height:auto;display:block}
.figcap{background:var(--ink);color:#fff;font-size:14px;margin:12px -12px -12px;padding:9px 14px}
.bloglist{list-style:none;margin:0;padding:0}
.blogitem{background:#fff;border:1px solid var(--line);padding:14px;margin:0 0 12px}
.notfound{text-align:center;padding:60px 20px}
.errcode{font-size:72px;margin:0;color:var(--deep)}
/* --- tablet: evidence as one compact row of five --- */
@media (max-width:1100px){
.evidence{grid-template-columns:repeat(5,minmax(0,1fr));gap:10px}
.evitem{padding:10px 12px;font-size:13px;line-height:1.5}
}
/* --- mobile: compact header, scroll-row nav + evidence row with fade scroll cues --- */
@media (max-width:640px){
.brandrow{padding:10px 4vw 6px}
.brand{font-size:24px}
a.brandcta{padding:8px 14px;font-size:14px}
.nav-primary,.nav-secondary{flex-wrap:nowrap;overflow-x:auto;padding-left:4vw;padding-right:4vw;scrollbar-width:none;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent 100%);mask-image:linear-gradient(90deg,#000 88%,transparent 100%)}
.nav-primary::-webkit-scrollbar,.nav-secondary::-webkit-scrollbar{display:none}
.nav-primary{gap:16px;padding-top:7px;padding-bottom:7px}
.nav-secondary{gap:14px;padding-top:6px;padding-bottom:6px}
.herowrap{padding:18px 14px}
.pagetitle{font-size:26px}
.herolead{font-size:16px;line-height:1.55}
.main{padding:20px 4vw 10px}
.bodytext{font-size:16px}
.aftermain{padding:0 4vw 20px}
.footgrid{padding:0 4vw}
.footbase{padding:14px 4vw 0}
.evidence{display:flex;overflow-x:auto;scroll-snap-type:x proximity;padding-bottom:6px;-webkit-mask-image:linear-gradient(90deg,#000 88%,transparent 100%);mask-image:linear-gradient(90deg,#000 88%,transparent 100%)}
.evitem{flex:0 0 230px;scroll-snap-align:start}
}