/* Shared public layout for Air4U news archive and legacy articles. */
:root{--bg:#061629;--panel:#0d304b;--ink:#f1f8fe;--muted:#b1c6d5;--line:rgba(154,222,243,.2);--blue:#5ccce9;--gold:#e9c67e}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:radial-gradient(ellipse at 70% 0,rgba(46,153,192,.18),transparent 45%),var(--bg);color:var(--ink);font:16px/1.7 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif}a{color:inherit}.shell{width:min(1120px,calc(100% - 38px));margin:auto}
nav{display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:75px;border-bottom:1px solid var(--line)}.navbg{background:rgba(4,18,34,.9);position:sticky;top:0;z-index:9;backdrop-filter:blur(16px)}.brand{font-weight:900;letter-spacing:-.04em;font-size:22px;text-decoration:none}.brand span{color:var(--blue)}.navlinks{display:flex;gap:22px;flex-wrap:wrap}.navlinks a{text-decoration:none;color:#c1d7e4;font-weight:700;font-size:14px}.navlinks a:hover{color:white}
main{padding:75px 0 110px}.eyebrow{font-size:12px;letter-spacing:.17em;text-transform:uppercase;color:var(--gold);font-weight:900}.heading{font-size:clamp(41px,6vw,70px);letter-spacing:-.055em;line-height:1.08;max-width:950px;margin:15px 0 22px}.lead{color:var(--muted);max-width:720px;font-size:19px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;margin-top:44px}.post{display:flex;flex-direction:column;gap:16px;text-decoration:none;padding:18px;border:1px solid var(--line);border-radius:22px;background:rgba(15,55,83,.55)}.post:hover{border-color:var(--blue)}.post img{width:100%;height:188px;object-fit:cover;border-radius:12px}.post h2{font-size:21px;letter-spacing:-.025em;line-height:1.3;margin:0}.post p{color:var(--muted);font-size:14px;margin:0}.post time{font-size:12px;font-weight:800;color:var(--gold)}.read{color:var(--blue);font-size:14px;font-weight:800;margin-top:auto}
.article{max-width:850px}.article h1{font-size:clamp(39px,5.4vw,66px);letter-spacing:-.05em;line-height:1.12;margin:16px 0 20px}.article time{color:var(--gold);font-size:13px;font-weight:800}.article .cover{display:block;width:100%;max-height:460px;object-fit:cover;border-radius:24px;margin:32px 0}.body{color:#d4e1ea;font-size:17px}.body p{margin:0 0 20px;white-space:pre-wrap}.body p:nth-child(1){font-size:20px;color:white}.body h2{margin:36px 0 17px;font-size:27px}.body img{max-width:100%;border-radius:16px}.back{display:inline-block;border:1px solid var(--line);border-radius:10px;padding:10px 18px;text-decoration:none;font-weight:800;margin-top:35px}
footer{border-top:1px solid var(--line);padding:30px 0;color:#8aa9bc;font-size:13px}.foot{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
@media(max-width:850px){.grid{grid-template-columns:repeat(2,1fr)}}@media(max-width:580px){nav{padding:14px 0;flex-direction:column;align-items:flex-start}.navlinks{gap:13px}.grid{grid-template-columns:1fr}main{padding:50px 0 80px}.post img{height:210px}}
.brand-air{display:inline-flex;align-items:center}.brand-air img{width:auto;height:45px;max-width:140px;object-fit:contain}.navlinks a[aria-current="page"]{color:#8ce3f7}@media(max-width:580px){.brand-air img{height:39px;max-width:120px}}