:root{
  --primary-gray:#d9d9d9;
  --black:#000;
  --white:#fff;
  --dark-gray:#222;
  --light-gray:#f5f5f5;
  --border-color:#c9c9c9;
}
*{box-sizing:border-box}
body{
  font-family:Arial,Helvetica,sans-serif;
  background:var(--primary-gray);
  color:var(--black);
  margin:0;line-height:1.65;
}
a{color:var(--black);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,.brand-title{font-family:Georgia,'Times New Roman',serif;letter-spacing:1px;line-height:1.25}
img{max-width:100%;height:auto}
.container{max-width:1100px;margin:0 auto;padding:0 20px}

/* header */
.site-header{background:var(--white);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:50}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:72px}
.logo{display:flex;align-items:center;gap:10px}
.logo img{height:40px}
.logo .name{font-family:Georgia,serif;font-weight:bold;letter-spacing:2px;font-size:18px}
nav.main a{margin-left:22px;font-size:15px;font-weight:600;color:var(--dark-gray)}
nav.main a.btn{background:var(--black);color:#fff;padding:8px 14px;border-radius:4px}
nav.main a.btn:hover{text-decoration:none;opacity:.9}
.menu-toggle{display:none;background:none;border:0;font-size:26px;cursor:pointer}

/* hero */
.hero{background:var(--white);border-bottom:1px solid var(--border-color);padding:70px 0;text-align:center}
.hero h1{font-size:44px;margin:0 0 14px}
.hero p{max-width:640px;margin:0 auto 26px;font-size:18px;color:var(--dark-gray)}
.hero .cta a{display:inline-block;margin:6px;padding:12px 22px;border:1px solid var(--black);border-radius:4px;font-weight:600}
.hero .cta a.solid{background:var(--black);color:#fff}

/* sections */
section{padding:46px 0}
.section-title{font-size:26px;margin:0 0 24px;border-bottom:2px solid var(--black);display:inline-block;padding-bottom:6px}

/* cards / grid */
.grid{display:grid;gap:24px}
.grid.cols-3{grid-template-columns:repeat(3,1fr)}
.grid.cols-2{grid-template-columns:repeat(2,1fr)}
.card{background:var(--white);border:1px solid var(--border-color);border-radius:6px;overflow:hidden;display:flex;flex-direction:column}
.card .thumb{aspect-ratio:16/9;background:var(--light-gray);overflow:hidden}
.card .thumb img{width:100%;height:100%;object-fit:cover}
.card .body{padding:18px;flex:1;display:flex;flex-direction:column}
.card .cat{font-size:12px;text-transform:uppercase;letter-spacing:1px;color:#666;margin-bottom:6px}
.card h3{font-size:19px;margin:0 0 10px}
.card .excerpt{font-size:14px;color:var(--dark-gray);flex:1}
.card .meta{font-size:12px;color:#777;margin-top:12px}

/* opportunity card */
.opp{background:var(--white);border:1px solid var(--border-color);border-radius:6px;padding:20px}
.opp h3{margin:0 0 8px;font-size:20px}
.tags{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.tag{font-size:12px;background:var(--light-gray);border:1px solid var(--border-color);padding:4px 10px;border-radius:20px}
.opp .deadline{font-size:13px;color:#b00020;margin:8px 0}
.opp .actions a{display:inline-block;margin-right:10px;margin-top:8px;font-weight:600}
.opp .actions a.solid{background:var(--black);color:#fff;padding:8px 14px;border-radius:4px}

/* buttons / forms */
.btn-solid{display:inline-block;background:var(--black);color:#fff;padding:11px 18px;border-radius:4px;font-weight:600;border:0;cursor:pointer}
.btn-outline{display:inline-block;border:1px solid var(--black);padding:10px 18px;border-radius:4px;font-weight:600}
form .field{margin-bottom:16px}
form label{display:block;font-weight:600;margin-bottom:6px;font-size:14px}
form input,form select,form textarea{width:100%;padding:11px;border:1px solid var(--border-color);border-radius:4px;font-size:15px;font-family:inherit;background:#fff}
form textarea{min-height:120px;resize:vertical}
.req{color:#b00020}

/* article */
.article{background:var(--white);border:1px solid var(--border-color);border-radius:6px;padding:36px;margin-top:24px}
.article h1{font-size:34px;margin:0 0 10px}
.article .article-meta{font-size:13px;color:#666;margin-bottom:20px;border-bottom:1px solid var(--border-color);padding-bottom:14px}
.article .content{font-size:17px;line-height:1.85}
.article .content img{border-radius:6px;margin:18px 0}
.article .content h2{margin-top:28px}

/* verify */
.verify-box{background:var(--white);border:1px solid var(--border-color);border-radius:6px;padding:34px;max-width:560px;margin:0 auto}
.verify-result{border-radius:6px;padding:24px;margin-top:24px}
.verify-result.valid{background:#eafaef;border:1px solid #0a7d24}
.verify-result.invalid{background:#fdeaea;border:1px solid #b00020}
.verify-result h2{margin-top:0}
.kv{display:flex;justify-content:space-between;padding:8px 0;border-bottom:1px dashed #ccc;font-size:15px}
.kv span:first-child{color:#666}

/* alerts */
.alert{padding:13px 16px;border-radius:4px;margin-bottom:18px;font-size:14px}
.alert.success{background:#eafaef;border:1px solid #0a7d24}
.alert.error{background:#fdeaea;border:1px solid #b00020}

/* newsletter */
.newsletter{background:var(--black);color:#fff;border-radius:8px;padding:34px;text-align:center}
.newsletter h2{color:#fff;margin-top:0}
.newsletter form{display:flex;gap:10px;max-width:480px;margin:18px auto 0}
.newsletter input{flex:1}
.newsletter button{white-space:nowrap}

/* footer */
.site-footer{background:var(--white);border-top:1px solid var(--border-color);padding:46px 0 24px;margin-top:50px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:30px}
.site-footer h4{margin:0 0 12px;font-family:Georgia,serif}
.site-footer ul{list-style:none;padding:0;margin:0}
.site-footer li{margin-bottom:8px;font-size:14px}
.footer-bottom{text-align:center;border-top:1px solid var(--border-color);margin-top:30px;padding-top:18px;font-size:13px;color:#666}

/* filters */
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:24px}
.filters a{font-size:14px;border:1px solid var(--border-color);padding:7px 14px;border-radius:20px;background:#fff}
.filters a.active{background:var(--black);color:#fff}

.pagination{display:flex;gap:6px;justify-content:center;margin-top:30px}
.pagination a,.pagination span{padding:8px 13px;border:1px solid var(--border-color);border-radius:4px;background:#fff;font-size:14px}
.pagination .current{background:var(--black);color:#fff}

@media(max-width:860px){
  .grid.cols-3{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .grid.cols-3,.grid.cols-2{grid-template-columns:1fr}
  nav.main{display:none;position:absolute;top:72px;left:0;right:0;background:#fff;flex-direction:column;padding:14px 20px;border-bottom:1px solid var(--border-color)}
  nav.main.open{display:flex}
  nav.main a{margin:8px 0}
  .menu-toggle{display:block}
  .hero h1{font-size:32px}
  .newsletter form{flex-direction:column}
}