:root{
  --brand:#F97A0C;--brand-d:#D4640A;--brand-l:#FF9A3D;--brand-soft:#FFF3E6;--brand-line:#FFD9B0;
  --ink:#15213B;--ink-2:#22304F;--muted:#5D6B85;--bg:#F7F8FB;--card:#fff;--line:#E4E8F0;
  --ok:#1E8E5A;--ok-bg:#E6F6EE;--warn:#B4530A;--radius:14px;
  --shadow:0 1px 2px rgba(21,33,59,.05),0 8px 24px rgba(21,33,59,.07);
  --shadow-h:0 14px 38px rgba(21,33,59,.14);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font:16px/1.65 "Inter","Segoe UI",system-ui,-apple-system,Arial,sans-serif;background:var(--bg);color:var(--ink)}
img{max-width:100%}
a{color:var(--brand-d);text-decoration:none}
a:hover{color:var(--brand)}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .6rem;letter-spacing:-.01em}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}

/* ---------- top bar ---------- */
.topbar{background:var(--ink);color:#C9D3E6;font-size:.83rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:8px;padding-bottom:8px}
.topbar a{color:#C9D3E6}
.topbar a:hover{color:var(--brand-l)}
.topbar .tb-links{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- header ---------- */
.head{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:60}
.head-in{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:12px 22px}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:46px;width:auto}
.brand .bt{display:none}
.nav{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav>a,.drop>a{display:block;padding:9px 13px;border-radius:9px;color:var(--ink-2);font-weight:600;font-size:.92rem;white-space:nowrap}
.nav>a:hover,.drop>a:hover,.nav>a.on,.drop>a.on{background:var(--brand-soft);color:var(--brand-d)}
.drop{position:relative}
.drop-menu{display:none;position:absolute;left:0;top:100%;min-width:250px;background:#fff;border:1px solid var(--line);
  border-radius:12px;box-shadow:var(--shadow-h);padding:8px;z-index:70}
.drop:hover .drop-menu{display:block}
.drop-menu a{display:block;padding:9px 12px;border-radius:8px;color:var(--ink-2);font-size:.9rem;font-weight:500}
.drop-menu a:hover{background:var(--brand-soft);color:var(--brand-d)}
.navbtn{background:var(--brand);color:#fff!important;border-radius:9px;padding:9px 16px;font-weight:700;font-size:.9rem}
.navbtn:hover{background:var(--brand-d)}
.navbtn.ghost{background:#fff;color:var(--ink-2)!important;border:1px solid var(--line)}
.navbtn.ghost:hover{border-color:var(--brand);color:var(--brand-d)!important;background:var(--brand-soft)}
.burger{display:none;background:none;border:1px solid var(--line);border-radius:9px;padding:8px 12px;font-size:1.2rem;cursor:pointer}

/* ---------- hero ---------- */
.hero{position:relative;background:linear-gradient(120deg,#15213B 0%,#22304F 45%,#8A3F07 130%);color:#fff;overflow:hidden}
.hero::after{content:"";position:absolute;right:-140px;top:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 35% 35%,rgba(249,122,12,.55),rgba(249,122,12,0) 65%)}
.hero .wrap{position:relative;z-index:2;padding:66px 22px 60px;max-width:1000px;text-align:center}
.hero h1{font-size:clamp(1.9rem,4.2vw,3rem);margin-bottom:.8rem}
.hero h1 span{color:var(--brand-l)}
.hero p.lead{color:#D5DDEC;font-size:1.08rem;max-width:730px;margin:0 auto 1.8rem}
.searchbar{display:flex;gap:8px;max-width:640px;margin:0 auto;background:#fff;padding:7px;border-radius:14px;box-shadow:0 12px 34px rgba(0,0,0,.28)}
.searchbar input{flex:1;border:0;padding:12px 14px;font-size:1rem;border-radius:9px;outline:none;color:var(--ink)}
.searchbar button{border:0;background:var(--brand);color:#fff;font-weight:700;padding:12px 24px;border-radius:9px;cursor:pointer;font-size:.95rem}
.searchbar button:hover{background:var(--brand-d)}
.hero-cta{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-top:1.5rem}

/* ---------- stats ---------- */
.stats{background:#fff;border-bottom:1px solid var(--line)}
.stats .wrap{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;padding:26px 22px}
.stat{text-align:center;padding:6px 8px;border-right:1px solid var(--line)}
.stat:last-child{border-right:0}
.stat b{display:block;font-size:1.9rem;color:var(--brand-d);line-height:1.1}
.stat span{font-size:.82rem;color:var(--muted);text-transform:uppercase;letter-spacing:.09em;font-weight:600}

/* ---------- sections ---------- */
section.block{padding:52px 0}
section.block.alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.sect-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;flex-wrap:wrap;margin-bottom:26px}
.sect-head h2{font-size:1.7rem;margin:0}
.sect-head p{color:var(--muted);margin:.35rem 0 0;font-size:.97rem}
.eyebrow{display:inline-block;font-size:.75rem;font-weight:800;letter-spacing:.14em;text-transform:uppercase;color:var(--brand-d);
  background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:999px;padding:4px 12px;margin-bottom:.7rem}
.more{font-weight:700;white-space:nowrap}
.pagetitle{font-size:2rem;margin:0 0 .4rem}
.page-hero{background:#fff;border-bottom:1px solid var(--line);padding:38px 0 30px}
.page-hero p{color:var(--muted);margin:0;max-width:760px}
.crumbs{font-size:.83rem;color:var(--muted);margin-bottom:.5rem}
.crumbs a{color:var(--muted)}

/* ---------- filter tabs ---------- */
.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}
.tab{border:1px solid var(--line);background:#fff;border-radius:999px;padding:7px 16px;font-size:.87rem;font-weight:600;color:var(--ink-2)}
.tab:hover{border-color:var(--brand);color:var(--brand-d)}
.tab.on{background:var(--brand);border-color:var(--brand);color:#fff}

/* ---------- grids & cards ---------- */
.grid{display:grid;gap:22px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow);
  display:flex;flex-direction:column;transition:transform .18s,box-shadow .18s,border-color .18s}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-h);border-color:var(--brand-line)}

/* journal card */
.jcard{padding:0;overflow:hidden}
.jcard .jc-top{display:flex;gap:16px;padding:20px 20px 14px}
.jcard .jc-cover{width:88px;min-width:88px;height:118px;border-radius:9px;object-fit:cover;border:1px solid var(--line);background:var(--brand-soft)}
.jcard .jc-cover.ph{display:flex;align-items:center;justify-content:center;font-weight:800;color:var(--brand-d);font-size:1.5rem;letter-spacing:.04em;text-align:center;padding:6px}
.jcard h3{font-size:1.06rem;margin:.25rem 0 .3rem}
.jcard h3 a{color:var(--ink)}
.jcard h3 a:hover{color:var(--brand-d)}
.jcard .jc-body{padding:0 20px 18px;display:flex;flex-direction:column;flex:1}
.jcard .desc{color:var(--muted);font-size:.9rem;margin:.2rem 0 1rem}
.jcard .jc-foot{display:flex;gap:8px;flex-wrap:wrap;margin-top:auto;padding-top:12px;border-top:1px solid var(--line)}
.chip{display:inline-block;background:var(--brand-soft);color:var(--brand-d);border:1px solid var(--brand-line);
  border-radius:999px;font-size:.72rem;font-weight:700;padding:2px 10px;width:fit-content}
.chip.oa{background:var(--ok-bg);border-color:#B7E3CB;color:var(--ok)}
.chip.paid{background:#FDECEC;border-color:#F4C3C3;color:#A9342A}
.chip.dom{background:#EEF3FF;border-color:#CBD9F7;color:#2B4A9B}
.issn{color:var(--muted);font-size:.8rem;margin:.1rem 0}
.clamp3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.clamp4{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}

/* article card */
.acard{gap:.2rem}
.acard .ameta{font-size:.78rem;color:var(--brand-d);font-weight:700;text-transform:uppercase;letter-spacing:.06em}
.acard h3{font-size:1.02rem;margin:.4rem 0}
.acard h3 a{color:var(--ink)}
.acard h3 a:hover{color:var(--brand-d)}
.acard .auth{font-size:.85rem;color:var(--ink-2);margin:.1rem 0 .4rem}
.acard .abs{font-size:.87rem;color:var(--muted)}
.acard .afoot{margin-top:auto;padding-top:12px;font-size:.8rem;color:var(--muted);display:flex;justify-content:space-between;gap:10px;flex-wrap:wrap}

/* product card */
.pcard .cover{display:block;margin:-6px 0 12px}
.pcard .cover img{width:100%;height:210px;object-fit:cover;border-radius:10px;border:1px solid var(--line)}

/* feature card */
.fcard{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.fcard .ic{width:42px;height:42px;border-radius:11px;background:var(--brand-soft);color:var(--brand-d);
  display:flex;align-items:center;justify-content:center;font-size:1.25rem;font-weight:800;margin-bottom:12px}
.fcard h4{font-size:1rem;margin:0 0 .3rem}
.fcard p{color:var(--muted);font-size:.9rem;margin:0}

/* announcements */
.ann{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed var(--line)}
.ann:last-child{border-bottom:0}
.ann .dt{min-width:66px;text-align:center;background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:10px;padding:8px 4px;height:fit-content}
.ann .dt b{display:block;font-size:1.15rem;color:var(--brand-d);line-height:1}
.ann .dt span{font-size:.7rem;color:var(--muted);text-transform:uppercase;font-weight:700}
.ann h4{margin:0 0 .2rem;font-size:1rem}
.ann p{margin:0;color:var(--muted);font-size:.89rem}

/* indexing strip */
.indexing{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}
.indexing span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:8px 18px;font-size:.86rem;font-weight:600;color:var(--ink-2)}

/* cta band */
.cta{background:linear-gradient(120deg,var(--brand-d),var(--brand) 60%,var(--brand-l));color:#fff;border-radius:var(--radius);
  padding:38px;display:flex;align-items:center;justify-content:space-between;gap:22px;flex-wrap:wrap}
.cta h3{font-size:1.55rem;margin:0 0 .3rem}
.cta p{margin:0;color:#FFEAD6}

/* buttons */
.btn{display:inline-block;padding:9px 18px;border-radius:9px;font-size:.88rem;font-weight:700;border:1px solid transparent;cursor:pointer;text-align:center}
.btn.solid{background:var(--brand);color:#fff}
.btn.solid:hover{background:var(--brand-d);color:#fff}
.btn.line{background:#fff;color:var(--ink-2);border-color:var(--line)}
.btn.line:hover{border-color:var(--brand);color:var(--brand-d);background:var(--brand-soft)}
.btn.dark{background:var(--ink);color:#fff}
.btn.dark:hover{background:var(--ink-2);color:#fff}
.btn.white{background:#fff;color:var(--brand-d)}
.btn.white:hover{background:var(--brand-soft)}
.btn.sm{padding:6px 13px;font-size:.8rem}
.btns{display:flex;gap:9px;flex-wrap:wrap;align-items:center}

/* tables, forms, richtext */
.richtext{font-size:.98rem;color:var(--ink-2)}
.richtext h2,.richtext h3{margin-top:1.5rem}
.richtext ul{padding-left:1.2rem}
table.meta{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.92rem;background:#fff}
table.meta th{text-align:left;width:190px;padding:9px 12px;background:var(--brand-soft);border:1px solid var(--line);color:var(--ink-2);font-weight:700}
table.meta td{padding:9px 12px;border:1px solid var(--line)}
form.pform{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);max-width:760px}
form.pform label{display:block;margin-bottom:14px;font-weight:600;font-size:.88rem;color:var(--ink-2)}
form.pform input,form.pform select,form.pform textarea{width:100%;margin-top:6px;padding:10px 12px;border:1px solid var(--line);
  border-radius:9px;font:inherit;font-size:.95rem;font-weight:400;background:#fff;color:var(--ink)}
form.pform input:focus,form.pform textarea:focus,form.pform select:focus{outline:2px solid var(--brand-line);border-color:var(--brand)}
form.pform .cols{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 16px}
.cap input{max-width:110px}
.notice{border-radius:11px;padding:14px 16px;margin:0 0 18px;font-size:.92rem}
.notice.good{background:var(--ok-bg);border:1px solid #B7E3CB;color:#146B43}
.notice.bad{background:#FDECEC;border:1px solid #F4C3C3;color:#A9342A}
.notice.info{background:var(--brand-soft);border:1px solid var(--brand-line);color:var(--warn)}
.empty{background:#fff;border:1px dashed var(--line);border-radius:var(--radius);padding:34px;text-align:center;color:var(--muted)}

/* detail layout */
.detail{display:grid;grid-template-columns:300px 1fr;gap:32px;margin:26px 0}
.detail-cover img{width:100%;border-radius:12px;border:1px solid var(--line);box-shadow:var(--shadow)}
.gallery{display:flex;gap:8px;margin-top:10px;flex-wrap:wrap}
.gallery img{width:60px;height:80px;object-fit:cover;border-radius:6px;border:1px solid var(--line);cursor:pointer}
.subtitle{color:var(--muted);font-size:1.05rem;margin-top:-.2rem}
.author-chip{display:inline-block;background:var(--brand-soft);border:1px solid var(--brand-line);border-radius:999px;
  padding:3px 12px;font-size:.83rem;margin:0 6px 6px 0;color:var(--ink-2)}

/* footer */
.foot{background:var(--ink);color:#B9C4DA;margin-top:56px}
.foot .wrap{padding:46px 22px 26px}
.foot-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px}
.foot h4{color:#fff;font-size:.95rem;text-transform:uppercase;letter-spacing:.09em;margin-bottom:1rem}
.foot a{color:#B9C4DA;font-size:.9rem}
.foot a:hover{color:var(--brand-l)}
.foot ul{list-style:none;padding:0;margin:0}
.foot li{margin-bottom:.5rem}
.foot p{font-size:.9rem;margin:.2rem 0}
.foot img.flogo{height:44px;margin-bottom:14px;background:#fff;border-radius:8px;padding:6px}
.foot-bottom{border-top:1px solid rgba(255,255,255,.12);text-align:center;padding:16px;font-size:.83rem;color:#8C99B4}

@media(max-width:1000px){
  .g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .g3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot-grid{grid-template-columns:repeat(2,1fr)}
  .detail{grid-template-columns:1fr}
  .stats .wrap{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(2){border-right:0}
}
@media(max-width:720px){
  .g2,.g3,.g4{grid-template-columns:1fr}
  .nav{display:none;position:absolute;left:0;right:0;top:100%;background:#fff;border-bottom:1px solid var(--line);
    padding:12px;flex-direction:column;align-items:stretch;box-shadow:var(--shadow-h)}
  .nav.open{display:flex}
  .head-in{position:relative}
  .burger{display:block}
  .drop-menu{position:static;display:block;box-shadow:none;border:0;padding:0 0 0 12px}
  .foot-grid{grid-template-columns:1fr}
  form.pform .cols{grid-template-columns:1fr}
  .cta{padding:26px}
}

/* rich text authored in the admin editor */
.foot-about p{margin:.2rem 0;font-size:.9rem}
.foot-about ul,.foot-about ol{padding-left:1.1rem;margin:.3rem 0}
.jcard .desc p{margin:0 0 .4rem}
.jcard .desc ul,.jcard .desc ol{padding-left:1.1rem;margin:.2rem 0}