/* Lux Education Partners */

:root{
  --paper:#FCFCFB;
  --panel:#F4F4F1;
  --ink:#16181A;
  --soft:#54585C;
  --faint:#8A8F94;
  --line:#E1E1DC;
  --accent:#1F4A6B;
  --sans:"Inter",system-ui,-apple-system,"Segoe UI",sans-serif;
  --cjk:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:17px;line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
html[lang="zh"] body{font-family:var(--sans),var(--cjk);line-height:1.85}
a{color:var(--accent)}

.wrap{max-width:64rem;margin:0 auto;padding:0 1.6rem}
.wrap.narrow{max-width:44rem}

/* ---- header ---- */
header.site{border-bottom:1px solid var(--line);background:var(--paper)}
.bar{display:flex;align-items:center;gap:1.6rem;flex-wrap:wrap;padding-top:1.1rem;padding-bottom:1.1rem}
.brand{font-weight:700;letter-spacing:-.02em;text-decoration:none;color:var(--ink);font-size:1.02rem}
nav.main{display:flex;gap:1.3rem;flex:1;font-size:.92rem}
nav.main a{color:var(--soft);text-decoration:none}
nav.main a:hover{color:var(--ink)}
nav.lang{display:flex;gap:.7rem;font-size:.82rem}
nav.lang a{color:var(--faint);text-decoration:none}
nav.lang a.on{color:var(--ink);font-weight:600}

/* ---- page head ---- */
.page-head{padding:3.4rem 0 2rem;border-bottom:1px solid var(--line);margin-bottom:2.6rem}
.page-head h1{font-size:clamp(1.7rem,3.6vw,2.35rem);line-height:1.2;letter-spacing:-.03em;margin:0 0 .9rem;font-weight:700}
html[lang="zh"] .page-head h1{letter-spacing:0;line-height:1.4}
.lede{color:var(--soft);margin:0;font-size:1.03rem}

/* ---- article ---- */
article.node{padding-bottom:3rem}
.crumb{font-size:.8rem;color:var(--faint);padding-top:2.4rem;margin:0 0 1.4rem}
.crumb a{color:var(--faint);text-decoration:none}
article.node h1{font-size:clamp(1.65rem,3.6vw,2.3rem);line-height:1.22;letter-spacing:-.03em;margin:0 0 2rem;font-weight:700}
html[lang="zh"] article.node h1{letter-spacing:0;line-height:1.45}

.answer,.judgment{
  background:var(--panel);border-left:3px solid var(--accent);
  padding:1.4rem 1.5rem;margin:0 0 2.2rem;
}
.answer p,.judgment p{margin:0;font-size:1.06rem;font-weight:500}
.lab{
  display:block;font-size:.7rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin-bottom:.6rem;
}
.evidence{margin:.9rem 0 0!important;font-size:.8rem!important;color:var(--faint)!important;font-weight:400!important}

.prose p,article.node p{margin:0 0 1.3rem}
article.node h2,.prose h2{
  font-size:1.16rem;font-weight:600;letter-spacing:-.015em;
  margin:2.8rem 0 1rem;padding-top:1.4rem;border-top:1px solid var(--line);
}
ul.plain,ul.sources,ul.vars{list-style:none;padding:0;margin:0 0 1.4rem}
ul.plain li{padding:.5rem 0 .5rem 1.1rem;position:relative;color:var(--soft)}
ul.plain li::before{content:"—";position:absolute;left:0;color:var(--faint)}
ul.vars li{padding:.85rem 0;border-bottom:1px solid var(--line)}
ul.vars b{display:block;font-weight:600;margin-bottom:.15rem}
ul.vars span{color:var(--soft);font-size:.95rem}
ul.sources li{padding:.4rem 0;font-size:.94rem}

dl.faq{margin:0 0 1.4rem}
dl.faq dt{font-weight:600;margin-top:1.2rem}
dl.faq dd{margin:.35rem 0 0;color:var(--soft)}

.cta{
  margin:2.6rem 0 0;padding:1.2rem 1.4rem;background:var(--panel);
  font-size:.98rem;
}
.cta a{font-weight:600;text-decoration:none;white-space:nowrap}

.meta{
  margin-top:2.2rem;padding-top:1.2rem;border-top:1px solid var(--line);
  font-size:.83rem;color:var(--faint);
}
.meta a{color:var(--soft)}
.tnote{display:inline-block;margin-top:.4rem}

.related{margin-top:3rem}
.related ul{list-style:none;padding:0;margin:0}
.related li{padding:.9rem 0;border-bottom:1px solid var(--line)}
.related a{font-weight:500;text-decoration:none}
.related span{display:block;color:var(--faint);font-size:.88rem;margin-top:.2rem}

/* ---- index ---- */
.cluster{margin-bottom:3.2rem}
.cluster h2{
  font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--faint);font-weight:600;margin:0 0 1.2rem;
  padding-bottom:.7rem;border-bottom:1px solid var(--line);
}
ul.nodes{list-style:none;padding:0;margin:0}
ul.nodes li{padding:1.2rem 0;border-bottom:1px solid var(--line)}
ul.nodes > li > a{font-size:1.06rem;font-weight:600;text-decoration:none;letter-spacing:-.01em}
ul.nodes p{margin:.35rem 0 .3rem;color:var(--soft);font-size:.95rem}
.rev{font-size:.76rem;color:var(--faint)}
.more{font-weight:600;text-decoration:none;font-size:.95rem}

/* ---- footer ---- */
footer.site{border-top:1px solid var(--line);margin-top:4rem;padding:2rem 0 3.5rem}
.disclaimer{font-size:.82rem;color:var(--faint);margin:0 0 .6rem;max-width:48rem}
.legal{font-size:.78rem;color:var(--faint);margin:0}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

@media (max-width:640px){
  body{font-size:16px}
  .bar{gap:.9rem}
  nav.main{order:3;flex-basis:100%;gap:1rem;font-size:.86rem}
  .page-head{padding:2.4rem 0 1.6rem}
}

/* ---- 实地调研图库 ---- */
.gallery{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(15rem,1fr));
  gap:1.1rem;margin:1.8rem 0 1.2rem;
}
.gallery figure{margin:0;background:var(--panel);border:1px solid var(--line)}
.gallery img{width:100%;height:11rem;object-fit:cover;display:block;background:var(--line)}
.gallery figcaption{padding:.75rem .9rem}
.gallery b{display:block;font-size:.94rem;font-weight:600;letter-spacing:-.01em}
.gallery span{display:block;font-size:.8rem;color:var(--faint);margin-top:.15rem}
.gallery p{margin:.4rem 0 0;font-size:.88rem;color:var(--soft);line-height:1.5}
.photo-note{font-size:.78rem;color:var(--faint);margin:0 0 2.4rem}

/* 文内单图 */
.field-shot{margin:1.8rem 0}
.field-shot img{width:100%;border:1px solid var(--line);display:block}
.field-shot figcaption{font-size:.8rem;color:var(--faint);margin-top:.5rem}

/* ---- prose 内的列表与段落 ---- */
.prose ul,.prose ol{padding-left:1.25rem;margin:0 0 1.4rem}
.prose li{margin-bottom:.45rem;color:var(--soft)}
.prose ol li{color:var(--ink)}
.prose strong{font-weight:600;color:var(--ink)}
.prose h2:first-child{margin-top:0;border-top:none;padding-top:0}

/* =====================================================
   首页
   ===================================================== */
.kicker{
  font-size:.74rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);font-weight:600;margin:0 0 1rem;
}
.hero{padding:3.6rem 0 3rem;border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:3rem;align-items:center}
.hero h1{
  font-size:clamp(1.9rem,4vw,2.7rem);line-height:1.15;letter-spacing:-.035em;
  margin:0 0 1.1rem;font-weight:700;
}
html[lang="zh"] .hero h1{letter-spacing:0;line-height:1.35}
.hero .lede{margin-bottom:1.8rem;max-width:34rem}
.hero-actions{display:flex;gap:.8rem;flex-wrap:wrap}
.btn{
  display:inline-block;padding:.75rem 1.3rem;background:var(--accent);color:#fff;
  text-decoration:none;font-weight:600;font-size:.95rem;border:1px solid var(--accent);
  transition:background .2s;
}
.btn:hover{background:#163a55}
.btn.ghost{background:transparent;color:var(--accent)}
.btn.ghost:hover{background:var(--panel)}
.hero-img{margin:0}
.hero-img img{width:100%;height:24rem;object-fit:cover;display:block;border:1px solid var(--line)}

.band{padding:4rem 0}
.band.alt{background:var(--panel)}
.sec-title{font-size:1.45rem;font-weight:700;letter-spacing:-.025em;margin:0 0 1.6rem}
html[lang="zh"] .sec-title{letter-spacing:0}
.sec-head{display:flex;justify-content:space-between;align-items:baseline;gap:1rem;flex-wrap:wrap}
.sec-head .sec-title{margin-bottom:1.2rem}

.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(15rem,1fr));gap:1.2rem}
.card{background:var(--paper);border:1px solid var(--line);padding:1.5rem 1.5rem 1.6rem}
.band.alt .card{background:var(--paper)}
.card h3{margin:0 0 .6rem;font-size:1.05rem;font-weight:600;letter-spacing:-.01em}
.card p{margin:0;color:var(--soft);font-size:.95rem;line-height:1.6}

.strip{padding:0 0 1rem}
.strip-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.2rem}
.strip figure{margin:0}
.strip img{width:100%;height:14rem;object-fit:cover;display:block;border:1px solid var(--line)}
.strip figcaption{font-size:.82rem;color:var(--faint);margin-top:.5rem}

.why-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:3rem;align-items:start}
.why-img{margin:0}
.why-img img{width:100%;height:26rem;object-fit:cover;display:block;border:1px solid var(--line)}
ul.why{list-style:none;padding:0;margin:0 0 1.6rem}
ul.why li{padding:.9rem 0;border-bottom:1px solid var(--line)}
ul.why b{display:block;font-weight:600;margin-bottom:.15rem}
ul.why span{color:var(--soft);font-size:.95rem}
.honest{color:var(--soft);font-size:.95rem;margin:0;padding:1rem 1.2rem;background:var(--paper);border-left:3px solid var(--accent)}

ul.nodes.home{display:grid;grid-template-columns:repeat(auto-fit,minmax(18rem,1fr));gap:1.2rem}
ul.nodes.home li{background:var(--panel);border:1px solid var(--line);border-bottom:1px solid var(--line);padding:1.4rem}
ul.nodes.home > li > a{font-size:1.02rem}

.field-row{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}
.field-row figure{margin:0}
.field-row img{width:100%;height:9.5rem;object-fit:cover;display:block;border:1px solid var(--line);background:var(--line)}
.field-row figcaption{font-size:.8rem;color:var(--soft);margin-top:.45rem;font-weight:500}

.contact{padding:4rem 0 3rem;border-top:1px solid var(--line)}
.contact-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:3rem;align-items:start}
.contact-box{background:var(--panel);border:1px solid var(--line);padding:1.6rem 1.7rem}
.contact-box p{margin:0 0 1.1rem;line-height:1.6}
.contact-box b{font-weight:600}
.contact-box a{font-weight:500}
.contact-box .small{font-size:.85rem;color:var(--faint);margin:0}

@media (max-width:820px){
  .hero-grid,.why-grid,.contact-grid{grid-template-columns:1fr;gap:1.8rem}
  .hero-img img{height:15rem}
  .why-img img{height:15rem}
  .strip-grid{grid-template-columns:1fr}
  .strip img{height:11rem}
  .field-row{grid-template-columns:repeat(2,1fr)}
  .band{padding:2.8rem 0}
}