/* 首页专有样式 · 依赖 lianyanshe.css 设计 token */

.brand-logo{
  display:inline-flex;align-items:center;justify-content:center;
  max-width:min(52vw,200px);
}
.brand-logo img{
  height:36px;width:auto;max-width:100%;display:block;
  object-fit:contain;border-radius:6px;
}
html[data-theme="dark"] .brand-logo img{
  box-shadow:0 0 0 1px rgba(212,168,87,.12);
}

.ls-topbar-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.nav-social{display:flex;align-items:center;gap:6px}
.nav-social a{
  display:inline-flex;align-items:center;justify-content:center;
  height:34px;padding:0 10px;border-radius:999px;
  border:1px solid var(--border);background:var(--bg-card);
  color:var(--text-secondary);font-size:12px;font-weight:600;
  letter-spacing:.2px;transition:border-color .2s ease,color .2s ease,transform .2s ease;
  white-space:nowrap;
}
.nav-social a:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-1px)}
.nav-social a svg{width:14px;height:14px;margin-right:5px;flex-shrink:0}

/* Hero */
.hero{
  max-width:1080px;margin:0 auto;
  padding:clamp(48px,7vw,88px) clamp(20px,5vw,56px) clamp(28px,4vw,40px);
}
.hero h1{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(40px,6vw,64px);line-height:1.08;letter-spacing:-1px;
  margin:0 0 14px;color:var(--text-primary);
}
.hero h1 .accent{
  background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero .tagline{
  font-family:var(--serif);font-weight:500;
  font-size:clamp(18px,2.2vw,24px);color:var(--text-secondary);
  margin:0 0 18px;letter-spacing:.4px;
}
.hero .tagline .dot-sep{color:var(--accent);margin:0 8px;font-weight:700}
.hero .lede{
  max-width:640px;color:var(--text-secondary);font-size:16px;line-height:1.8;margin:0 0 12px;
}
.hero .lede-sub{
  max-width:640px;color:var(--text-muted);font-size:14.5px;line-height:1.75;margin:0 0 24px;
}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px}

/* Sections */
.sec{
  max-width:1080px;margin:0 auto;
  padding:0 clamp(20px,5vw,56px) clamp(40px,6vw,72px);
}
.sec-head{
  display:flex;align-items:flex-end;justify-content:space-between;flex-wrap:wrap;gap:12px;
  margin-bottom:22px;padding-bottom:14px;border-bottom:1px solid var(--border-light);
}
.sec-title{
  font-family:var(--serif);font-weight:700;
  font-size:clamp(22px,3vw,28px);margin:0;color:var(--text-primary);
}
.sec-sub{font-size:12px;letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted)}

/* Feature / course cards */
.feat-grid{display:grid;grid-template-columns:1.15fr 1fr;gap:16px}
@media (max-width:860px){.feat-grid{grid-template-columns:1fr}}

.feat-card{
  position:relative;display:flex;flex-direction:column;
  padding:24px 22px 20px;min-height:200px;
  background:var(--bg-card);border:1px solid var(--border);border-radius:14px;
  box-shadow:var(--shadow-sm);overflow:hidden;
  transition:transform .28s cubic-bezier(.2,.7,.2,1),box-shadow .28s ease,border-color .28s ease;
}
.feat-card::before{
  content:"";position:absolute;left:0;top:0;height:4px;width:100%;
  background:var(--c,var(--accent));
}
.feat-card:hover{
  transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--c,var(--accent));
}
.feat-card .kicker{
  font-size:11px;letter-spacing:2px;text-transform:uppercase;font-weight:700;
  color:var(--c,var(--accent));margin-bottom:12px;
}
.feat-card h3{
  font-family:var(--serif);font-weight:700;font-size:22px;line-height:1.25;
  margin:0 0 10px;color:var(--text-primary);
}
.feat-card .desc{
  color:var(--text-secondary);font-size:14px;margin:0 0 16px;flex:1;line-height:1.7;
}
.feat-card .foot{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding-top:12px;border-top:1px solid var(--border-light);
  font-size:12px;color:var(--text-muted);
}
.feat-card .go{color:var(--c,var(--accent));font-weight:700}
.feat-card.featured{
  background:linear-gradient(165deg,var(--bg-card) 0%,color-mix(in srgb,var(--c) 8%,var(--bg-card)) 100%);
}
.pill{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:999px;font-size:11px;font-weight:700;
  background:color-mix(in srgb,var(--c,var(--accent)) 14%,transparent);
  color:var(--c,var(--accent));
  border:1px solid color-mix(in srgb,var(--c,var(--accent)) 28%,transparent);
}

/* Catalog grid uses .ls-card from design system */
.ls-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media (max-width:960px){.ls-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:620px){.ls-grid{grid-template-columns:1fr}}
/* 入场动画：默认可见，避免 JS 失败时卡片透明不可见 */
.ls-card{opacity:1;transform:none;min-height:240px;transition:opacity .4s ease,transform .4s ease}
.js-animate .ls-card{opacity:0;transform:translateY(14px)}
.js-animate .ls-card.in{opacity:1;transform:none}
.ls-card .desc{font-size:13.5px;line-height:1.75}

/* Reports */
.reports{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:4px}
@media (max-width:720px){.reports{grid-template-columns:1fr}}
.report-item{
  display:block;padding:14px;
  background:var(--bg-tertiary);border:1px solid var(--border-light);border-radius:10px;
  transition:transform .2s ease,border-color .2s ease,background .2s ease;
}
.report-item:hover{transform:translateY(-2px);background:var(--bg-hover);border-color:var(--c,var(--accent))}
.report-item .ri-no{font-family:var(--mono);font-size:11px;color:var(--c,var(--accent));font-weight:700;letter-spacing:1px}
.report-item .ri-title{font-family:var(--serif);font-weight:700;font-size:15px;line-height:1.4;margin:6px 0;color:var(--text-primary)}
.report-item .ri-tag{font-size:12px;color:var(--text-muted)}

/* CTA */
.cta-band{max-width:1080px;margin:0 auto 56px;padding:0 clamp(20px,5vw,56px)}
.cta-inner{
  border-radius:16px;padding:clamp(24px,4vw,36px);
  background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 14%,var(--bg-card)),var(--bg-secondary));
  border:1px solid var(--border);box-shadow:var(--shadow-md);
  display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
}
.cta-inner h2{font-family:var(--serif);font-size:clamp(20px,2.6vw,26px);margin:0 0 8px;color:var(--text-primary)}
.cta-inner p{margin:0;color:var(--text-secondary);max-width:520px;font-size:14.5px;line-height:1.65}
.cta-links{display:flex;flex-wrap:wrap;gap:10px}

/* Footer extras — 覆盖 lianyanshe.css 的横向 flex，改为纵向分栏 */
.ls-footer{
  max-width:1080px;
  flex-direction:column;
  align-items:stretch;
  gap:18px;
}
.footer-cols{
  width:100%;display:flex;justify-content:space-between;align-items:flex-start;
  flex-wrap:wrap;gap:16px 28px;
}
.footer-contact{display:flex;flex-direction:column;gap:6px;font-size:12px;letter-spacing:.3px}
.footer-contact a{color:var(--text-secondary);border-bottom:1px dotted var(--border);width:fit-content}
.footer-contact a:hover{color:var(--accent);border-color:var(--accent)}
.footer-social{display:flex;gap:12px;flex-wrap:wrap;align-items:center}
.footer-social a{color:var(--text-secondary);border-bottom:1px dotted var(--border)}
.footer-social a:hover{color:var(--accent);border-color:var(--accent)}
.ls-footer .copy{
  width:100%;padding-top:4px;border-top:1px solid var(--border-light);
  font-size:11px;color:var(--text-muted);letter-spacing:.5px;
}

/* 主题导航卡片：长文案时保持等高与可读 */
#catalog .ls-card{
  min-height:280px;
}
#catalog .ls-card h3{font-size:20px;line-height:1.3}
#catalog .ls-card .desc{
  font-size:13.5px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:6;-webkit-box-orient:vertical;overflow:hidden;
}

@media (max-width:640px){
  .nav-social .label{display:none}
  .nav-social a{padding:0 9px}
  .nav-social a svg{margin-right:0}
  #catalog .ls-card{min-height:0}
  #catalog .ls-card .desc{-webkit-line-clamp:8}
  .footer-cols{flex-direction:column;gap:14px}
}