/* Shared styles for /research pages */
:root {
  --green:#22c55e; --green-50:#f0fdf4; --green-600:#16a34a; --green-700:#15803d;
  --ink:#0a0a0a; --ink-2:#262626; --ink-3:#525252; --ink-4:#737373;
  --line:#e5e5e5; --line-soft:#f5f5f5; --bg:#ffffff; --bg-soft:#fafafa;
  --radius:12px; --radius-sm:8px; --radius-lg:20px;
  --shadow-sm:0 1px 2px rgba(0,0,0,.04); --shadow:0 4px 12px rgba(0,0,0,.05);
}
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:'Inter',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--bg);line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:var(--green-700);text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:960px;margin:0 auto;padding:0 24px}
h1,h2,h3,h4{letter-spacing:-.02em;font-weight:700;color:var(--ink)}
h1{font-size:clamp(36px,5vw,56px);line-height:1.1;font-weight:800;letter-spacing:-.03em;margin-bottom:20px}
h2{font-size:28px;line-height:1.3;margin-bottom:12px}
h3{font-size:20px;line-height:1.35;margin-bottom:8px}
p{color:var(--ink-3);font-size:17px}

nav.site-nav{position:sticky;top:0;z-index:100;background:rgba(255,255,255,.85);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid var(--line-soft)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:1200px;margin:0 auto;padding:0 24px}
.nav-brand{display:flex;align-items:center;gap:10px;font-weight:700;font-size:17px;color:var(--ink)}
.nav-brand-mark{width:28px;height:28px;border-radius:7px;background:linear-gradient(135deg,var(--green) 0%,var(--green-600) 100%);display:flex;align-items:center;justify-content:center;color:white;font-weight:800;font-size:13px}
.nav-links{display:flex;gap:28px;align-items:center}
.nav-links a:not(.btn){color:var(--ink-3);font-size:14px;font-weight:500}
.nav-links a:not(.btn):hover{color:var(--ink);text-decoration:none}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 18px;border-radius:var(--radius-sm);font-weight:600;font-size:14px;transition:all .15s}
.btn-primary{background:var(--ink);color:white!important}
.btn-primary:hover{background:var(--ink-2);text-decoration:none}
@media(max-width:720px){.nav-links a:not(.btn){display:none}}

.breadcrumb{font-size:13px;color:var(--ink-4);margin:24px 0 8px}
.breadcrumb a{color:var(--ink-4);text-decoration:underline;text-decoration-color:var(--line)}
.breadcrumb a:hover{color:var(--green-700)}
.kicker{font-size:13px;font-weight:600;color:var(--green-600);text-transform:uppercase;letter-spacing:.08em;margin-bottom:12px}

.page-head{padding:48px 0 32px;border-bottom:1px solid var(--line-soft);margin-bottom:48px}
.page-head .lead{font-size:19px;color:var(--ink-2);max-width:720px;margin-top:16px}

.category-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:32px 0}
@media(max-width:720px){.category-grid{grid-template-columns:1fr}}
.category-card{padding:28px;background:var(--bg-soft);border:1px solid var(--line);border-radius:var(--radius);transition:all .2s}
.category-card:hover{border-color:var(--ink-4);box-shadow:var(--shadow);text-decoration:none}
.category-card h3{color:var(--ink);margin-bottom:6px}
.category-card p{font-size:15px;margin-bottom:8px}
.category-card .count{font-size:12px;font-weight:600;color:var(--green-700);text-transform:uppercase;letter-spacing:.05em}

.article{padding:28px 0;border-bottom:1px solid var(--line-soft)}
.article:first-of-type{padding-top:0}
.article:last-of-type{border-bottom:none}
.article-head{display:flex;align-items:baseline;gap:12px;margin-bottom:6px;flex-wrap:wrap}
.article-num{font-family:'JetBrains Mono',monospace;font-size:13px;color:var(--ink-4);font-weight:600;min-width:30px}
.article-type{display:inline-block;padding:3px 8px;border-radius:4px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.type-study{background:#dbeafe;color:#1e40af}
.type-news{background:#fef3c7;color:#92400e}
.type-opinion{background:#fce7f3;color:#9f1239}
.type-policy{background:var(--green-50);color:var(--green-700)}
.type-book{background:#f5f3ff;color:#6d28d9}
.type-survey{background:#e0e7ff;color:#3730a3}
.article h3{margin-bottom:4px;font-size:21px}
.article h3 a{color:var(--ink)}
.article h3 a:hover{color:var(--green-700);text-decoration:underline}
.article-meta{font-size:13px;color:var(--ink-4);margin-bottom:10px}
.article-meta strong{color:var(--ink-3);font-weight:600}
.article-key{font-size:15px;color:var(--ink-2);margin-bottom:8px}
.article-why{font-size:14px;color:var(--ink-3);font-style:italic}
.article-quote{font-size:15px;padding:12px 16px;background:var(--bg-soft);border-left:3px solid var(--green);border-radius:0 6px 6px 0;margin-top:12px;color:var(--ink-2)}
.article-link{font-size:13px;margin-top:12px}
.article-link a{color:var(--green-700);font-weight:600}
.article-link a::after{content:" →"}

footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:40px 0;margin-top:80px;text-align:center;font-size:13px;color:var(--ink-4)}
footer a{color:var(--ink-3)}

.pager{display:flex;justify-content:space-between;align-items:center;margin-top:48px;padding-top:24px;border-top:1px solid var(--line-soft);gap:16px}
.pager a{font-size:14px;color:var(--green-700);font-weight:600}
.pager a.prev::before{content:"← "}
.pager a.next::after{content:" →"}
.pager .spacer{flex:1}