/* =========================================================
   rivaetech.com — shared styles
   Base tokens & components mirror index.html; article,
   breadcrumb, TOC, FAQ and related-link styles added for
   the RMT content pages.
   ========================================================= */

:root{
  --pine:#1E4238;
  --pine-deep:#15302A;
  --paper:#FBF9F3;
  --cream:#F4EFE4;
  --ink:#1F2320;
  --muted:#5D625C;
  --ochre:#C87D34;
  --ochre-deep:#A9631F;
  --line:rgba(31,66,56,.14);
  --line-cream:rgba(244,239,228,.18);
  --shadow:0 1px 2px rgba(21,48,42,.06),0 8px 30px rgba(21,48,42,.08);
  --maxw:1080px;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Segoe UI","Noto Sans SC",sans-serif;
  color:var(--ink);
  background:var(--paper);
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:760px;margin:0 auto;padding:0 24px}
.en{font-family:"Fraunces",Georgia,serif}
.eyebrow{
  font-family:"Fraunces",Georgia,serif;
  font-size:13px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--ochre);font-weight:600;
}
a{color:inherit}
img{max-width:100%;display:block}

/* ===== buttons ===== */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  background:var(--ochre);color:#fff;
  font-size:16px;font-weight:600;
  padding:14px 26px;border-radius:999px;border:0;cursor:pointer;
  text-decoration:none;transition:background .18s ease,transform .18s ease;
}
.btn:hover{background:var(--ochre-deep);transform:translateY(-1px)}
.btn:focus-visible{outline:3px solid #fff;outline-offset:2px}
.btn-ghost{
  background:transparent;color:var(--cream);
  border:1px solid var(--line-cream);
}
.btn-ghost:hover{background:rgba(244,239,228,.08)}

/* ===== top bar ===== */
header.top{
  position:sticky;top:0;z-index:50;
  background:rgba(30,66,56,.96);
  backdrop-filter:saturate(140%) blur(6px);
  color:var(--cream);
}
.top .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:16px}
.brand{font-family:"Fraunces",Georgia,serif;font-size:20px;font-weight:600;letter-spacing:.01em;color:var(--cream);text-decoration:none;flex:0 0 auto}
.brand small{display:block;font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-size:11px;letter-spacing:.16em;color:rgba(244,239,228,.7);font-weight:400}
.top nav{display:flex;align-items:center;gap:22px;margin-left:auto}
.top nav a.navlink{color:rgba(244,239,228,.85);text-decoration:none;font-size:14px;font-weight:500;transition:color .15s ease}
.top nav a.navlink:hover{color:var(--cream)}
.top .btn{padding:9px 18px;font-size:14px}

/* ===== generic hero ===== */
.hero{
  background:
    radial-gradient(120% 90% at 85% -10%,rgba(200,125,52,.20),transparent 55%),
    linear-gradient(180deg,var(--pine) 0%,var(--pine-deep) 100%);
  color:var(--cream);
  padding:88px 0 96px;
}
.hero .wrap{max-width:820px}
.hero .eyebrow{margin-bottom:22px}
.hero h1{
  font-family:"Fraunces",Georgia,serif;font-weight:500;
  font-size:clamp(34px,6vw,60px);line-height:1.1;letter-spacing:-.01em;margin-bottom:22px;
}
.hero h1 .zh{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-weight:600}
.hero p.lede{font-size:clamp(16px,2.2vw,19px);color:rgba(244,239,228,.86);max-width:640px;margin-bottom:34px}
.hero .cta-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}
.hero .note{font-size:13px;color:rgba(244,239,228,.6);margin-top:20px}

/* ===== page header (smaller, for content pages) ===== */
.page-head{
  background:linear-gradient(180deg,var(--pine) 0%,var(--pine-deep) 100%);
  color:var(--cream);padding:60px 0 52px;
}
.page-head .eyebrow{margin-bottom:16px;display:block}
.page-head h1{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-weight:600;font-size:clamp(28px,5vw,44px);line-height:1.18;letter-spacing:-.01em;max-width:760px;
}
.page-head p.sub{color:rgba(244,239,228,.82);font-size:clamp(15px,2vw,18px);max-width:680px;margin-top:16px}

/* ===== breadcrumb ===== */
.breadcrumb{font-size:13px;color:var(--muted);padding:18px 0}
.breadcrumb a{color:var(--ochre-deep);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.breadcrumb span{margin:0 8px;color:var(--line)}

/* ===== generic section ===== */
section{padding:80px 0}
.sec-head{max-width:640px;margin-bottom:44px}
.sec-head .eyebrow{margin-bottom:14px;display:block}
.sec-head h2{font-family:"Fraunces",Georgia,serif;font-weight:500;font-size:clamp(26px,4vw,38px);line-height:1.18;letter-spacing:-.01em}
.sec-head h2 .zh{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-weight:600}

/* ===== article prose ===== */
article.prose{padding:56px 0 72px}
article.prose h2{
  font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  font-size:clamp(22px,3.4vw,28px);font-weight:600;line-height:1.3;
  margin:44px 0 16px;padding-top:8px;
}
article.prose h2:first-child{margin-top:0}
article.prose h3{font-size:19px;font-weight:600;margin:28px 0 10px}
article.prose p{margin-bottom:16px;color:#33372F;font-size:16.5px}
article.prose ul,article.prose ol{margin:0 0 18px 4px;padding-left:22px;color:#33372F}
article.prose li{margin-bottom:9px;font-size:16.5px}
article.prose strong{font-weight:600;color:var(--ink)}
article.prose a{color:var(--ochre-deep);text-decoration:underline;text-underline-offset:2px}
article.prose .lead{font-size:18px;color:var(--ink);margin-bottom:24px}
article.prose .callout{
  background:var(--cream);border-left:4px solid var(--ochre);
  border-radius:0 12px 12px 0;padding:18px 22px;margin:24px 0;font-size:15px;color:var(--muted);
}
article.prose .callout strong{color:var(--pine)}

/* ===== table of contents ===== */
.toc{
  background:var(--cream);border:1px solid var(--line);border-radius:14px;
  padding:22px 26px;margin-bottom:36px;
}
.toc h4{font-size:13px;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:12px;font-weight:600}
.toc ol{list-style:none;counter-reset:toc;padding:0}
.toc li{counter-increment:toc;margin-bottom:8px}
.toc li::before{content:counter(toc,decimal-leading-zero);font-family:"Fraunces",Georgia,serif;color:var(--ochre);font-weight:600;margin-right:10px}
.toc a{color:var(--pine);text-decoration:none;font-weight:500}
.toc a:hover{text-decoration:underline}

/* ===== FAQ ===== */
.faq{background:var(--cream)}
.faq .qa{border-bottom:1px solid var(--line);padding:22px 0}
.faq .qa:last-child{border-bottom:0}
.faq .q{font-size:18px;font-weight:600;margin-bottom:8px;color:var(--ink)}
.faq .a{color:var(--muted);font-size:15.5px}

/* ===== related links ===== */
.related{padding:64px 0}
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:28px}
.related-card{
  display:block;background:var(--paper);border:1px solid var(--line);border-radius:14px;
  padding:22px 24px;text-decoration:none;color:inherit;box-shadow:var(--shadow);
  transition:transform .16s ease,border-color .16s ease;
}
.related-card:hover{transform:translateY(-2px);border-color:var(--ochre)}
.related-card .eyebrow{font-size:11px;margin-bottom:10px;display:block}
.related-card h3{font-size:17px;font-weight:600;margin-bottom:6px}
.related-card p{color:var(--muted);font-size:14px}

/* ===== inline CTA band ===== */
.cta-band{background:var(--pine);color:var(--cream);text-align:center;padding:60px 0}
.cta-band h2{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-weight:600;font-size:clamp(22px,3.4vw,30px);margin-bottom:14px;color:var(--cream)}
.cta-band p{color:rgba(244,239,228,.82);max-width:520px;margin:0 auto 26px;font-size:15px}

/* ===== footer / disclaimer ===== */
footer{background:var(--pine-deep);color:rgba(244,239,228,.75);padding:52px 0 40px;font-size:13px}
footer .brand{margin-bottom:18px;font-family:"Fraunces",Georgia,serif;font-size:20px;color:var(--cream)}
footer .foot-links{display:flex;flex-wrap:wrap;gap:18px;margin-bottom:24px}
footer .foot-links a{color:rgba(244,239,228,.72);text-decoration:none;font-size:13px}
footer .foot-links a:hover{color:var(--cream);text-decoration:underline}
footer .disclaim{max-width:760px;margin-bottom:20px}
footer .disclaim p{margin-bottom:10px;color:rgba(244,239,228,.62)}
footer .disclaim strong{color:rgba(244,239,228,.85);font-weight:600}
footer .copy{border-top:1px solid var(--line-cream);padding-top:20px;color:rgba(244,239,228,.5)}

/* ===== responsive ===== */
@media (max-width:860px){
  .related-grid{grid-template-columns:1fr}
  section{padding:60px 0}
  .hero{padding:64px 0 72px}
  .top nav{gap:14px}
}
@media (max-width:600px){
  .top nav a.navlink{display:none}
  .top .brand small{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .btn:hover,.related-card:hover{transform:none}
}

/* =========================================================
   Homepage components (added in full-redo pass)
   ========================================================= */

/* hero trust note under CTA */
.trust-strip{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:26px}
.trust-strip .ti{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(244,239,228,.8)}
.trust-strip .ti::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ochre);flex:0 0 auto}

/* government data band */
.stats{background:var(--cream)}
.stats .sec-head{margin-bottom:34px}
.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.stat{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:28px 26px;box-shadow:var(--shadow)}
.stat .big{font-family:"Fraunces",Georgia,serif;font-size:30px;font-weight:600;color:var(--pine);line-height:1.1;margin-bottom:8px}
.stat .lbl{font-weight:600;font-size:16px;margin-bottom:6px}
.stat p{color:var(--muted);font-size:14px}
.source-note{font-size:12.5px;color:var(--muted);margin-top:22px}
.source-note a{color:var(--ochre-deep)}

/* benefit cards */
.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px}
.feature{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:26px 26px;box-shadow:var(--shadow)}
.feature .mark{font-family:"Fraunces",Georgia,serif;font-size:15px;color:var(--ochre);font-weight:600;display:block;margin-bottom:12px}
.feature h3{font-size:18px;font-weight:600;margin-bottom:8px}
.feature p{color:var(--muted);font-size:15px}

/* transparent process */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.step{position:relative;padding-top:18px}
.step .num{font-family:"Fraunces",Georgia,serif;font-size:40px;font-weight:500;color:var(--pine);line-height:1;margin-bottom:12px}
.step .num small{color:var(--ochre)}
.step h3{font-size:17px;font-weight:600;margin-bottom:8px}
.step p{color:var(--muted);font-size:14px}
.step::before{content:"";position:absolute;top:0;left:0;width:40px;height:3px;background:var(--ochre);border-radius:3px}

/* testimonials */
.testimonials{background:var(--cream)}
.t-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:8px}
.tcard{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:26px 24px;box-shadow:var(--shadow)}
.tcard .quote{font-size:15.5px;color:#33372F;margin-bottom:16px;line-height:1.7}
.tcard .who{font-size:13px;color:var(--muted);font-weight:600}

/* schools placeholder */
.placeholder-note{background:rgba(200,125,52,.10);border:1px dashed var(--ochre);color:var(--ochre-deep);border-radius:10px;padding:10px 16px;font-size:13px;margin-bottom:26px;display:inline-block}
.grid2{display:grid;grid-template-columns:repeat(2,1fr);gap:22px}
.school{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:30px 28px;box-shadow:var(--shadow)}
.school .tag{display:inline-block;font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--pine);background:rgba(30,66,56,.08);padding:4px 12px;border-radius:999px;margin-bottom:16px;font-weight:600}
.school h3{font-size:22px;font-weight:600;margin-bottom:6px}
.school .course{color:var(--ochre-deep);font-weight:600;margin-bottom:14px}
.school p{color:var(--muted);font-size:15px;margin-bottom:18px}
.school ul{list-style:none;margin-bottom:8px}
.school li{position:relative;padding-left:22px;color:var(--muted);font-size:14px;margin-bottom:8px}
.school li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:var(--ochre)}

/* lead form */
.form-sec{background:var(--pine);color:var(--cream)}
.form-sec .sec-head h2,.form-sec .sec-head h2 .zh{color:var(--cream)}
.form-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:start}
.form-copy p{color:rgba(244,239,228,.82);margin-bottom:16px;font-size:15px}
.form-copy .privacy{font-size:13px;color:rgba(244,239,228,.62);border-top:1px solid var(--line-cream);padding-top:18px;margin-top:8px}
form.lead{background:var(--paper);color:var(--ink);border-radius:18px;padding:30px;box-shadow:0 20px 50px rgba(21,48,42,.28)}
.field{margin-bottom:18px}
.field label{display:block;font-size:14px;font-weight:600;margin-bottom:7px}
.field label .req{color:var(--ochre-deep)}
.field input,.field select{width:100%;font:inherit;font-size:15px;color:var(--ink);padding:12px 14px;border:1px solid var(--line);border-radius:10px;background:#fff;transition:border-color .15s ease,box-shadow .15s ease}
.field input:focus,.field select:focus{outline:none;border-color:var(--pine);box-shadow:0 0 0 3px rgba(30,66,56,.12)}
.consent{display:flex;gap:10px;align-items:flex-start;margin:6px 0 20px;font-size:13px;color:var(--muted)}
.consent input{margin-top:3px;width:16px;height:16px;flex:0 0 auto}
form.lead .btn{width:100%;justify-content:center;font-size:16px;padding:15px}
.form-msg{margin-top:16px;font-size:14px;display:none;padding:12px 14px;border-radius:10px}
.form-msg.ok{display:block;background:rgba(30,66,56,.10);color:var(--pine);border:1px solid rgba(30,66,56,.25)}
.form-msg.err{display:block;background:rgba(169,99,31,.10);color:var(--ochre-deep);border:1px solid rgba(169,99,31,.30)}

/* responsive for homepage blocks */
@media (max-width:860px){
  .stat-grid{grid-template-columns:1fr}
  .feature-grid{grid-template-columns:1fr}
  .steps{grid-template-columns:repeat(2,1fr)}
  .t-grid{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr;gap:32px}
}
@media (max-width:480px){
  .steps{grid-template-columns:1fr}
}

/* =========================================================
   Image bands (added in image pass)
   ========================================================= */
.img-band{position:relative;min-height:400px;background-size:cover;background-position:center;display:flex;align-items:flex-end;justify-content:center;text-align:center}
.img-band::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(21,48,42,.12),rgba(21,48,42,.72))}
.img-band .cap{position:relative;z-index:1;color:var(--cream);max-width:720px;padding:56px 24px}
.img-band .cap h2{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-weight:600;font-size:clamp(22px,3.6vw,30px);margin-bottom:10px;color:var(--cream)}
.img-band .cap p{color:rgba(244,239,228,.9);font-size:15px}
@media (max-width:600px){.img-band{min-height:300px}}

/* =========================================================
   Image + text split sections (Plan B — images shown complete)
   ========================================================= */
.img-split{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center;max-width:var(--maxw);margin:0 auto;padding:72px 24px}
.img-split .img{width:100%}
.img-split .img img{width:100%;height:auto;border-radius:16px;box-shadow:var(--shadow);display:block}
.img-split .img img.tall{max-height:560px;object-fit:cover;object-position:center top}
.img-split .txt .eyebrow{display:block;margin-bottom:12px}
.img-split .txt h2{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;font-weight:600;font-size:clamp(22px,3.4vw,30px);line-height:1.25;margin-bottom:14px}
.img-split .txt p{color:var(--muted);font-size:16px;margin-bottom:14px}
.img-split .txt a.textlink{color:var(--ochre-deep);font-weight:600;text-decoration:underline;text-underline-offset:2px}
@media (max-width:760px){
  .img-split{grid-template-columns:1fr;gap:24px;padding:52px 24px}
  .img-split .img{order:-1}
}