:root{
  --bg:#f7f4ee;--paper:#fffdf8;--ink:#202326;--muted:#697077;--line:#ddd8ce;
  --crimson:#8f1d2c;--crimson-dark:#65151f;--graphite:#2b3035;--soft:#efe9df;
  --shadow:0 14px 45px rgba(39,34,27,.09);--radius:18px;
}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,sans-serif}
button,input,select{font:inherit}.hidden{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.topbar{height:76px;padding:0 clamp(20px,5vw,76px);display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--line);background:rgba(247,244,238,.92);backdrop-filter:blur(14px);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--ink)}.brand-mark{width:42px;height:42px;border-radius:13px;background:var(--graphite);color:white;display:grid;place-items:center;font-weight:800;letter-spacing:-1px}.brand-name{font-weight:800;letter-spacing:.08em;font-size:14px}.brand-sub{font-size:10px;letter-spacing:.28em;color:var(--crimson);font-weight:700;margin-top:2px}.hub-link{color:var(--muted);text-decoration:none;font-size:13px;font-weight:600}.hub-link:hover{color:var(--crimson)}
main{min-height:calc(100vh - 160px)}.hero{text-align:center;padding:clamp(64px,9vw,120px) 20px 52px;background:radial-gradient(circle at 50% 15%,#fff 0,#f7f4ee 50%,#f7f4ee 100%)}.eyebrow{color:var(--crimson);font-size:12px;font-weight:800;letter-spacing:.2em;margin-bottom:18px}.hero h1{font:700 clamp(42px,7vw,76px)/1.02 'Playfair Display',serif;letter-spacing:-.045em;margin:0 auto 20px;max-width:900px}.hero p{max-width:760px;margin:0 auto 32px;color:var(--muted);font-size:17px;line-height:1.7}
.search-box{max-width:860px;margin:0 auto;display:flex;padding:8px;border:1px solid #d4cec2;background:white;border-radius:20px;box-shadow:var(--shadow)}.search-box input{flex:1;border:0;outline:0;padding:17px 18px;background:transparent;min-width:0}.search-box button{border:0;background:var(--crimson);color:white;font-weight:700;border-radius:14px;padding:0 26px;cursor:pointer}.search-box button:hover{background:var(--crimson-dark)}.quick-search{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-top:20px;color:var(--muted);font-size:12px;align-items:center}.quick-search button{border:1px solid var(--line);background:var(--paper);border-radius:999px;padding:7px 11px;color:var(--graphite);cursor:pointer}.quick-search button:hover{border-color:var(--crimson);color:var(--crimson)}
.start-panel{max-width:1200px;margin:0 auto;padding:24px 24px 80px;display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.start-card{background:rgba(255,253,248,.72);border:1px solid var(--line);padding:28px;border-radius:var(--radius)}.start-icon{display:inline-grid;place-items:center;width:42px;height:42px;background:var(--soft);border-radius:12px;color:var(--crimson);font-size:20px}.start-card h2{font-size:16px;margin:18px 0 8px}.start-card p{font-size:13px;line-height:1.65;color:var(--muted);margin:0}
.workspace{max-width:1320px;margin:0 auto;padding:36px 24px 80px;display:grid;grid-template-columns:240px minmax(0,1fr);gap:34px}.filters{position:sticky;top:98px;align-self:start;background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:20px}.filter-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.filter-head h2{font-size:16px;margin:0}.text-btn{background:none;border:0;color:var(--crimson);font-size:12px;font-weight:700;cursor:pointer}.filters label{display:block;font-size:12px;font-weight:700;color:var(--graphite);margin:0 0 16px}.filters input[type=number],.filters select{width:100%;margin-top:7px;border:1px solid var(--line);border-radius:10px;padding:10px;background:white;outline:0}.check-row{display:flex!important;gap:9px;align-items:center;font-weight:600!important}.check-row input{accent-color:var(--crimson)}.secondary-btn{width:100%;border:1px solid var(--graphite);background:var(--graphite);color:white;border-radius:11px;padding:11px;font-weight:700;cursor:pointer}
.results-toolbar{display:flex;justify-content:space-between;gap:18px;align-items:flex-end;padding-bottom:18px;border-bottom:1px solid var(--line)}.result-count{font-weight:800;font-size:18px}.search-term{font-size:12px;color:var(--muted);margin-top:5px}.sort-label{font-size:11px;font-weight:700;color:var(--muted)}.sort-label select{margin-left:7px;border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:9px 10px;color:var(--ink)}
.status{margin:22px 0;padding:14px 16px;border:1px solid var(--line);border-radius:12px;background:var(--paper);color:var(--muted)}.results{display:grid;gap:14px;margin-top:18px}.result-card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:22px;transition:.2s ease}.result-card:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(39,34,27,.07);border-color:#c9c1b3}.meta-row{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}.pill{font-size:10px;font-weight:700;border:1px solid var(--line);padding:5px 8px;border-radius:999px;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}.pill.oa{border-color:#b9d7c0;color:#25703c;background:#f4fbf5}.result-card h3{font-size:19px;line-height:1.42;margin:0 0 9px}.authors{font-size:12px;color:var(--crimson);font-weight:600;line-height:1.5}.source{font-size:12px;color:var(--muted);margin-top:5px}.abstract{font-size:13px;line-height:1.7;color:#555d63;margin:16px 0 0}.topic-list{display:flex;gap:6px;flex-wrap:wrap;margin-top:14px}.topic{font-size:10px;background:var(--soft);padding:5px 8px;border-radius:7px;color:#555}.card-actions{display:flex;gap:9px;flex-wrap:wrap;margin-top:18px;padding-top:16px;border-top:1px solid #ece7de}.action{display:inline-flex;text-decoration:none;font-size:11px;font-weight:700;padding:8px 10px;border-radius:9px;border:1px solid var(--line);color:var(--graphite);background:white}.action.primary{background:var(--crimson);color:white;border-color:var(--crimson)}.action:hover{opacity:.86}.citation{margin-left:auto;color:var(--muted);font-size:11px;align-self:center}.pagination{display:flex;justify-content:center;align-items:center;gap:16px;margin-top:28px}.pagination button{border:1px solid var(--line);background:var(--paper);border-radius:10px;padding:9px 12px;cursor:pointer}.pagination button:disabled{opacity:.35;cursor:not-allowed}.pagination span{font-size:12px;font-weight:700;color:var(--muted)}
footer{border-top:1px solid var(--line);padding:25px clamp(20px,5vw,76px);display:flex;justify-content:space-between;gap:20px;color:var(--muted);font-size:11px}
@media(max-width:850px){.workspace{grid-template-columns:1fr}.filters{position:static;display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.filter-head,.secondary-btn{grid-column:1/-1}.filters label{margin:0}.start-panel{grid-template-columns:1fr}.hero{padding-top:56px}.search-box{border-radius:16px}.search-box button{padding:0 16px}.results-toolbar{align-items:flex-start;flex-direction:column}.citation{margin-left:0}footer{flex-direction:column}}
@media(max-width:560px){.topbar{height:66px;padding:0 16px}.hub-link{display:none}.hero h1{font-size:43px}.hero p{font-size:14px}.search-box{display:grid;grid-template-columns:1fr;padding:6px}.search-box input{padding:14px 12px}.search-box button{height:44px}.workspace{padding:24px 14px 60px}.filters{grid-template-columns:1fr}.filter-head,.secondary-btn{grid-column:auto}.result-card{padding:18px}.start-panel{padding-left:14px;padding-right:14px}.sort-label select{margin:7px 0 0}footer{padding:22px 16px}}
.research-modes{max-width:1020px;margin:26px auto 0;display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.mode-tab{border:1px solid var(--line);background:rgba(255,253,248,.78);border-radius:14px;padding:13px 14px;text-align:left;cursor:pointer;color:var(--ink);transition:.18s ease}.mode-tab strong{display:block;font-size:12px;margin-bottom:4px}.mode-tab span{display:block;font-size:10px;line-height:1.35;color:var(--muted)}.mode-tab:hover{border-color:#bbaea2;transform:translateY(-1px)}.mode-tab.active{border-color:var(--crimson);background:#fff8f7;box-shadow:inset 0 0 0 1px rgba(143,29,44,.08)}.mode-tab.active strong{color:var(--crimson)}
.result-context{font-size:11px;color:var(--muted);margin-top:4px;max-width:700px}.pill.ph{border-color:#b8c8e3;color:#355985;background:#f5f8fd}.pill.relevance{border-color:#d8c6a2;color:#755822;background:#fffaf0}.muted-copy{font-style:italic;color:#858b90}
@media(max-width:850px){.research-modes{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.research-modes{grid-template-columns:1fr 1fr;gap:7px}.mode-tab{padding:10px}.mode-tab span{display:none}.mode-tab strong{margin:0;font-size:11px}}

body.modal-open{overflow:hidden}.cite-btn{cursor:pointer}.citation-modal{position:fixed;inset:0;background:rgba(25,27,29,.55);backdrop-filter:blur(5px);z-index:100;display:grid;place-items:center;padding:20px}.citation-dialog{width:min(820px,100%);max-height:88vh;overflow:auto;background:var(--paper);border:1px solid var(--line);border-radius:22px;box-shadow:0 30px 90px rgba(0,0,0,.24);padding:26px}.citation-dialog-head{display:flex;justify-content:space-between;align-items:flex-start;gap:20px;border-bottom:1px solid var(--line);padding-bottom:16px}.citation-dialog-head h2{font:700 28px/1.15 'Playfair Display',serif;margin:0}.eyebrow.mini{font-size:9px;margin-bottom:7px}.modal-close{width:38px;height:38px;border:1px solid var(--line);background:white;border-radius:11px;font-size:24px;line-height:1;color:var(--muted);cursor:pointer}.modal-close:hover{color:var(--crimson);border-color:var(--crimson)}.citation-work-title{font-size:13px;line-height:1.55;color:var(--muted);padding:16px 0 4px}.citation-style{border:1px solid var(--line);border-radius:14px;padding:15px 16px;margin-top:12px;background:white}.citation-style-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.citation-style-head strong{font-size:12px;color:var(--crimson)}.citation-style-head button{border:1px solid var(--line);background:var(--paper);border-radius:9px;padding:7px 10px;font-size:10px;font-weight:700;color:var(--graphite);cursor:pointer}.citation-style-head button:hover{border-color:var(--crimson);color:var(--crimson)}.citation-style p{font-family:Georgia,'Times New Roman',serif;font-size:14px;line-height:1.65;margin:12px 0 2px;color:#2c3033;overflow-wrap:anywhere}.citation-note{font-size:10px;line-height:1.5;color:var(--muted);margin:14px 2px 0}@media(max-width:560px){.citation-modal{padding:10px}.citation-dialog{padding:18px;border-radius:17px}.citation-dialog-head h2{font-size:24px}.citation-style-head{align-items:flex-start}.citation-style{padding:13px}.citation-style p{font-size:13px}}

/* Research field scope */
.scope-row{display:flex;align-items:center;justify-content:center;gap:10px;margin:12px auto 2px;flex-wrap:wrap}
.scope-row label{font-size:.78rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:#6d655f}
.scope-row select{min-width:280px;max-width:100%;border:1px solid #ded8d1;border-radius:999px;background:#fff;padding:10px 38px 10px 14px;font:inherit;color:#292724;box-shadow:0 4px 18px rgba(42,31,22,.05)}
@media (max-width:640px){.scope-row{align-items:stretch}.scope-row label{width:100%;text-align:center}.scope-row select{width:100%;min-width:0}}

.coverage-block{border-bottom:1px solid var(--line);margin:0 0 18px;padding:0 0 4px}.coverage-title{font-size:12px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--crimson);margin-bottom:12px}.coverage-note{font-size:10px;line-height:1.45;color:#777;margin:-6px 0 14px}.coverage-block .hidden{display:none!important}