/* WIIL — Wireless Information and Intelligence Laboratory */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Noto+Sans+KR:wght@400;500;700&display=swap");
:root{
  --ink:#1f2328; --muted:#57606a; --line:#e3e6ea; --bg:#ffffff; --soft:#f6f8fa;
  --accent:#2b3a55; --link:#1f6feb;
  --blue-bg:#eef4fc; --blue-bd:#4f86d6;
  --green-bg:#eaf6ee; --green-bd:#3fae6a;
  --purple-bg:#f3eefc; --purple-bd:#8b5cd6;
  --orange-bg:#fdf1e6; --orange-bd:#e08a2e;
  --red-bg:#fdeeee; --red-bd:#d64f4f;
  --gray-bg:#f2f3f5; --gray-bd:#9aa0a6;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Inter","Noto Sans KR",-apple-system,BlinkMacSystemFont,"Segoe UI","Malgun Gothic","Apple SD Gothic Neo",Roboto,Helvetica,Arial,sans-serif;
  color:var(--ink);line-height:1.65;background:var(--bg);font-size:16px}
a{color:var(--link);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.nav{position:sticky;top:0;z-index:50;background:var(--accent);color:#fff}
.nav-inner{max-width:1040px;margin:0 auto;display:flex;align-items:center;flex-wrap:wrap;padding:12px 20px;gap:6px}
.brand{font-weight:800;letter-spacing:.5px;font-size:20px;color:#fff;margin-right:auto}
.brand a{color:#fff}
.nav a.link{color:#dfe6f2;padding:6px 10px;border-radius:6px;font-size:14.5px;font-weight:500}
.nav a.link:hover{background:rgba(255,255,255,.12);text-decoration:none;color:#fff}
.nav a.link.active{color:#fff;font-weight:700}
.nvchk{position:absolute;left:-9999px}
.nvbtn{display:none}
@media(max-width:760px){
.nav-inner{padding:10px 16px}
.nvbtn{display:inline-flex;align-items:center;color:#fff;font-size:24px;line-height:1;cursor:pointer;padding:4px 10px;user-select:none;margin-left:auto}
.nav a.link{display:none;width:100%;padding:11px 6px;border-top:1px solid rgba(255,255,255,.12);border-radius:0}
.nvchk:checked ~ a.link{display:block}
}
.hero{background:linear-gradient(135deg,#2b3a55,#3d5170 55%,#31445f);color:#fff;padding:64px 20px;text-align:center}
.hero h1{margin:0;font-size:clamp(30px,5vw,52px);font-weight:800;letter-spacing:-.5px}
.hero .sub{margin-top:14px;opacity:.92;font-size:16px;max-width:820px;margin-left:auto;margin-right:auto}
.hero .sub em{font-style:normal;display:block;opacity:.85;font-size:14.5px;margin-top:4px}
.wrap{max-width:1040px;margin:0 auto;padding:40px 20px 70px}
h2.sec{font-size:24px;margin:42px 0 6px;font-weight:750}
h2.sec:first-child{margin-top:8px}
.rule{height:1px;background:var(--line);border:0;margin:8px 0 22px}
h3{font-size:18px;margin:0 0 8px}
p{margin:12px 0}
.lead{font-size:16.5px;color:#2a2f36}
.muted{color:var(--muted)}
ul.clean{padding-left:20px}
ul.clean li{margin:6px 0}
.cards{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.cards.one{grid-template-columns:1fr}
@media(max-width:760px){.cards{grid-template-columns:1fr}}
.card{border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:24px 26px}
.card h3{margin-bottom:14px;font-size:18px}
.card p{margin:9px 0;font-size:14.7px}
.card .kv{font-size:14.5px;color:#3a3f46;line-height:2.15}
.card .kv b{color:#1f2a3a}
.blue{background:var(--blue-bg);border-color:#cfe0f5}
.green{background:var(--green-bg);border-color:#c6e6d3}
.purple{background:var(--purple-bg);border-color:#ddcef4}
.orange{background:var(--orange-bg);border-color:#f5ddc0}
.red{background:var(--red-bg);border-color:#f3cccc}
.gray{background:var(--gray-bg);border-color:#dcdfe3}
.stats{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;align-items:stretch}
@media(max-width:760px){.stats{grid-template-columns:1fr}}
.tile{border:1px solid var(--line);border-radius:12px;padding:24px 16px;text-align:center;background:var(--soft);display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:128px}
.tile .big{font-size:30px;font-weight:800;color:var(--accent);line-height:1.15}
.tile .lbl{font-size:13.5px;color:var(--muted);margin-top:10px}
.callout{border:1px solid var(--line);background:var(--soft);border-radius:12px;padding:16px 20px;margin:14px 0}
.callout h3{margin-top:0}
table.tbl{border-collapse:collapse;width:100%;margin:10px 0 4px;font-size:14.5px}
table.tbl th,table.tbl td{border:1px solid var(--line);padding:8px 11px;text-align:left;vertical-align:top}
table.tbl th{background:var(--soft);font-weight:700}
.pub-section{margin-top:30px}
ol.pubs{padding-left:26px;margin:8px 0}
ol.pubs li{margin:9px 0;font-size:15px}
ol.pubs li i{font-style:italic}
.venue{color:#555}
ul.news{list-style:none;padding:0;margin:8px 0}
ul.news li{padding:9px 0;border-bottom:1px solid var(--line);font-size:15px}
ul.news li b.date{color:var(--accent)}
.explore{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:760px){.explore{grid-template-columns:1fr}}
a.exp{display:block;border:1px solid var(--line);border-radius:10px;padding:16px;background:var(--soft);color:var(--ink)}
a.exp:hover{border-color:var(--accent);text-decoration:none;box-shadow:0 2px 10px rgba(0,0,0,.05)}
a.exp .t{font-weight:700}
a.exp .d{font-size:13.5px;color:var(--muted);margin-top:2px}
footer{border-top:1px solid var(--line);background:var(--soft);color:var(--muted);font-size:13.5px;text-align:center;padding:22px 20px}
.recruit{border:1px solid var(--green-bd);background:var(--green-bg);border-radius:10px;padding:16px 18px}