:root{--bg:#f5f8f7;--surface:#ffffff;--surface-2:#eef4f1;--surface-3:#f8fbfa;--text:#1f2a28;--muted:#5d6c69;--brand:#2e5e4e;--brand-2:#3f7a66;--brand-dark:#18342b;--line:#dbe6e1;--shadow:0 16px 44px rgba(24,43,36,.08);--shadow-soft:0 8px 22px rgba(24,43,36,.06);--radius:22px;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:"Segoe UI",Arial,sans-serif;background:linear-gradient(180deg,#f6f9f8,#f3f7f5);color:var(--text);line-height:1.72}a{color:var(--brand);text-decoration:none}a:hover{text-decoration:underline}img{max-width:100%;display:block}.container{max-width:var(--max);margin:0 auto;padding:0 24px}.site-header{position:sticky;top:0;z-index:50;background:rgba(246,249,248,.88);backdrop-filter:blur(12px);border-bottom:1px solid rgba(219,230,225,.9)}.topbar{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}.brand{display:flex;align-items:center;gap:12px;color:var(--brand-dark);font-weight:700;letter-spacing:.2px;text-decoration:none}.brand-mark{width:40px;height:40px;border-radius:14px;background:linear-gradient(135deg,var(--brand),var(--brand-2));display:grid;place-items:center;color:#fff;font-weight:800;box-shadow:var(--shadow-soft)}.brand small{display:block;color:var(--muted);font-weight:500;letter-spacing:0}.site-nav{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:flex-end}.site-nav a{padding:9px 12px;border-radius:999px;color:var(--muted);font-size:.94rem;transition:.2s ease}.site-nav a:hover,.site-nav a.active{background:var(--surface-2);color:var(--brand-dark);text-decoration:none}.menu-toggle{display:none;border:1px solid var(--line);background:var(--surface);color:var(--brand-dark);border-radius:12px;padding:10px 14px;font-weight:700}.hero{position:relative;min-height:420px;color:#fff;background:linear-gradient(rgba(14,33,28,.76),rgba(14,33,28,.82));overflow:hidden}.hero::before{content:"";position:absolute;inset:0;background-image:var(--hero-image);background-size:cover;background-position:center;opacity:.14}.hero-grid{position:relative;display:grid;grid-template-columns:1.1fr .9fr;gap:28px;align-items:end;padding:92px 0 58px}.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:999px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);text-transform:uppercase;letter-spacing:.12em;font-size:.8rem;margin:0 0 16px}.hero h1{font-family:Georgia,"Times New Roman",serif;font-size:clamp(2rem,4vw,4rem);line-height:1.06;margin:0 0 14px;max-width:14ch;color:#fff}.hero p{margin:0;max-width:58ch;color:rgba(255,255,255,.92);font-size:1.04rem}.hero-aside{background:rgba(255,255,255,.11);border:1px solid rgba(255,255,255,.18);border-radius:24px;padding:20px;backdrop-filter:blur(8px);box-shadow:var(--shadow-soft)}.hero-aside img{width:100%;border-radius:18px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.06)}.hero-caption{font-size:.92rem;color:rgba(255,255,255,.9);margin-top:12px}.page-wrap{padding:42px 0 74px}.page-grid{display:grid;grid-template-columns:280px 1fr;gap:26px;align-items:start}.sidebar-card,.page-card{background:var(--surface);border:1px solid var(--line);border-radius:26px;box-shadow:var(--shadow)}.sidebar-card{padding:22px;position:sticky;top:86px}.sidebar-card h2{margin:0 0 16px;font-size:1.05rem;color:var(--brand-dark);font-family:inherit}.sidebar-card nav{display:grid;gap:8px}.sidebar-card nav a{padding:10px 12px;border-radius:14px;color:var(--muted);font-size:.95rem}.sidebar-card nav a:hover,.sidebar-card nav a.active{background:var(--surface-2);color:var(--brand-dark);text-decoration:none}.meta-box{margin-top:18px;padding:16px;border-radius:18px;background:linear-gradient(180deg,var(--surface-3),var(--surface-2));border:1px solid var(--line)}.meta-box strong{display:block;color:var(--brand-dark);margin-bottom:6px}.page-card{padding:30px}.intro-band{display:grid;grid-template-columns:1.05fr .95fr;gap:22px;margin-bottom:28px;align-items:center}.intro-copy{padding:2px 2px 2px 0}.section-label{color:var(--brand);text-transform:uppercase;letter-spacing:.11em;font-size:.8rem;font-weight:700;margin-bottom:12px}.intro-copy h2{font-family:Georgia,"Times New Roman",serif;font-size:clamp(1.65rem,2.8vw,2.5rem);line-height:1.1;margin:0 0 12px;color:var(--brand-dark)}.intro-copy p{margin:0;color:var(--muted);font-size:1rem}.visual-card{background:linear-gradient(180deg,var(--surface-3),#fff);border:1px solid var(--line);border-radius:22px;padding:14px;box-shadow:var(--shadow-soft)}.visual-card img{border-radius:16px;width:100%}.visual-card figcaption{margin-top:10px;color:var(--muted);font-size:.93rem}.content-section + .content-section{margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}.content-section > h2:first-child{margin-top:0}h2,h3,h4{font-family:Georgia,"Times New Roman",serif;color:var(--brand-dark);line-height:1.2}h2{font-size:clamp(1.45rem,2.4vw,2.1rem);margin:0 0 .9rem}h3{font-size:1.28rem;margin:1.35rem 0 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/* --- upgraded academic presentation --- */
.page-subtitle{
  margin:.45rem 0 0;
  color:#5d6c69;
  font-size:1.02rem;
  max-width:58ch;
}
.quick-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:18px;
  margin:24px 0 28px;
}
.quick-card{
  background:linear-gradient(180deg,#ffffff,#f7faf8);
  border:1px solid #dce8e2;
  border-radius:18px;
  padding:18px;
  box-shadow:0 10px 24px rgba(25,40,34,.06);
}
.quick-card h3{
  margin:0 0 8px;
  font-size:1.02rem;
}
.quick-card p{
  margin:0;
}
.callout{
  background:linear-gradient(135deg,#eef6f2,#f8fbfa);
  border:1px solid #d7e6df;
  border-left:5px solid #2e5e4e;
  border-radius:18px;
  padding:22px 20px;
  margin:24px 0;
  box-shadow:0 8px 24px rgba(25,40,34,.05);
}
.callout h3{
  margin:0 0 10px;
}
.callout p:last-child{
  margin-bottom:0;
}
.ref-box{
  margin-top:28px;
  background:#fcfdfd;
  border:1px solid #dce8e2;
  border-radius:18px;
  padding:18px 20px;
}
.ref-box h3{
  margin:0 0 10px;
  font-size:1rem;
}
.ref-box ul{
  margin:0;
  padding-left:20px;
}
.ref-box li{
  margin:0 0 8px;
}
.hero .hero-subtitle{
  margin-top:.6rem;
  font-size:1.06rem;
  color:#e6f0ec;
  max-width:54ch;
}
.intro-note{
  font-size:.98rem;
  color:#4c5c58;
}

.reference-list{padding-left:1.4rem}.reference-list li,.content-section ul li{margin-bottom:.7rem;line-height:1.65}

.infographic-gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:22px;margin-top:18px}.infographic-card{margin:0;background:linear-gradient(180deg,var(--surface-3),#fff);border:1px solid var(--line);border-radius:22px;overflow:hidden;box-shadow:var(--shadow-soft)}.infographic-card img{width:100%;height:auto;display:block;background:#fff}.infographic-card figcaption{padding:14px 16px;color:var(--muted);font-size:.95rem}.infographic-card:hover{transform:translateY(-2px);transition:.2s ease}