:root{
  --blue:#103a54;
  --blue2:#174b6b;
  --cream:#f5f1e8;
  --gold:#e6c669;
  --ink:#0b2e43;
  --line:#d8e0e5;
  --soft:#eef4f7;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:Georgia,"Times New Roman",serif;
  color:var(--ink);
  background:#f7f8f8;
}
.top{
  background:linear-gradient(90deg,#123851,#0f334b);
  color:#fff;
  box-shadow:0 2px 10px rgba(0,0,0,.16);
}
.brand-wrap{
  min-height:88px;
  position:relative;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:11px 34px;
}
.brand{text-align:center}
.brand-title{font-size:36px;font-weight:700;line-height:1}
.tagline{font-size:23px;font-style:italic;margin-top:7px;opacity:.96}
.quick{position:absolute;right:34px;top:50%;transform:translateY(-50%);display:flex;gap:18px;white-space:nowrap;font-size:15px}
.quick a,.main-nav a{color:#fff;text-decoration:none}
.main-nav{
  min-height:48px;
  border-top:1px solid rgba(255,255,255,.22);
  display:flex;
  align-items:center;
  gap:31px;
  padding:0 38px;
  font-weight:700;
}
.main-nav a{height:48px;display:flex;align-items:center}
.main-nav a.active{color:#ffe8a0;border-bottom:4px solid #efd47a}
.nav-note{margin-left:auto;font-style:italic;font-size:16px;opacity:.9;white-space:nowrap}

.hero{
  height:250px;
  position:relative;
  overflow:hidden;
  background:#ddd;
  border-bottom:1px solid #c9c9c9;
}
.hero img{
  width:100%;height:100%;object-fit:cover;object-position:center 52%;
  filter:none;
}
.hero:after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(90deg,rgba(248,242,230,.72) 0%,rgba(248,242,230,.28) 32%,rgba(248,242,230,.03) 65%);
}
.hero-overlay{position:absolute;z-index:2;left:8%;top:30px}
.hero h1{margin:0;font-size:58px;line-height:.98;color:#092d43}
.hero p{margin:7px 0 0;font-size:25px;font-weight:700}

.layout{
  display:grid;
  grid-template-columns:238px minmax(0,1fr) 315px;
  max-width:1620px;
  margin:0 auto;
  min-height:650px;
  background:#fff;
}
.sidebar{border-right:1px solid var(--line);padding:20px 18px 28px;background:#fbfcfc}
.sidebar h2{margin:0 0 12px;font-size:20px}
.back{display:block;color:#496578;text-decoration:none;margin-bottom:15px}
.location-list{display:flex;flex-direction:column;gap:2px}
.location-list a{
  display:flex;justify-content:space-between;padding:9px 12px;border-radius:5px;
  text-decoration:none;color:#26485e;font-size:16px;
}
.location-list a:hover,.location-list .selected{background:#e6f0f6;color:#083554}
.side-note{margin-top:34px;font-size:23px;line-height:1.15;font-style:italic;color:#174b6b;transform:rotate(-4deg)}
.empty-small{color:#71828d;font-style:italic;padding:10px}

.content{padding:16px 18px 26px}
.section-head{
  display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:14px;
}
.section-head h2{margin:0;font-size:28px}
.section-head p{margin:5px 0 0;color:#678}
.tabs{display:flex;gap:6px}
.tab{
  text-decoration:none;border:1px solid #c9d6de;background:#edf3f6;color:#21445b;
  padding:10px 18px;border-radius:5px;font-weight:700;
}
.tab.active{background:var(--blue);color:#fff}

.cards{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:12px;
}
.card{
  display:block;text-decoration:none;color:inherit;border:1px solid #d8e0e5;border-radius:7px;
  overflow:hidden;background:#fff;box-shadow:0 1px 4px rgba(0,0,0,.06);
}
.card-selected{outline:2px solid #285b79;outline-offset:-2px}
.media-frame{height:155px;position:relative;background:#e8eef1;overflow:hidden}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
.media-type{
  position:absolute;left:7px;bottom:7px;background:rgba(255,255,255,.9);
  border-radius:4px;padding:3px 6px;font:13px Arial,sans-serif;
}
.play-badge{
  position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  background:rgba(16,58,84,.82);color:#fff;font:20px Arial,sans-serif;padding-left:3px;
}
.card-body{padding:9px 10px 11px}
.card h3{margin:0 0 5px;font-size:15px;line-height:1.22}
.meta{font-size:13px;color:#607483}

.empty-state{
  border:1px dashed #b9c8d0;background:#f7fafb;border-radius:8px;padding:34px;text-align:center;color:#536a78;
}
.empty-state h3{margin-top:0;color:#183e56}
.empty-state code{background:#edf2f4;padding:2px 5px;border-radius:4px}

.detail{border-left:1px solid var(--line);padding:16px;background:#fbfcfc}
.detail-card{
  background:#fff;border:1px solid #dde4e8;border-radius:7px;padding:13px;
  box-shadow:0 1px 5px rgba(0,0,0,.05);position:sticky;top:12px;
}
.detail-card img,.detail-card video{
  width:100%;height:215px;object-fit:contain;background:#111;border-radius:5px;display:block;
}
.detail-card img{object-fit:cover;background:#e5eaed}
.detail-card h2{font-size:22px;margin:11px 0 6px}
.detail-card p{line-height:1.42}
.location{color:#49697d}
.filename{font-size:13px;color:#758791;word-break:break-word}
.actions{display:flex;gap:18px}
.actions a{color:#0f4b73;text-decoration:none}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tags span{
  background:#eaf1f5;border-radius:4px;padding:6px 9px;
  font:12px Arial,sans-serif;color:#2a526a;
}
footer{
  min-height:62px;background:#113b55;color:#fff;display:flex;align-items:center;
  gap:24px;padding:0 34px;font-size:14px;
}
.footer-script{margin-left:auto;font-style:italic;font-size:19px}

@media(max-width:1350px){
  .cards{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media(max-width:1100px){
  .quick{display:none}
  .main-nav{overflow-x:auto;gap:22px}
  .nav-note{display:none}
  .layout{grid-template-columns:210px 1fr}
  .detail{display:none}
  .hero-overlay{left:230px}
}
@media(max-width:820px){
  .cards{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:650px){
  .brand-wrap{padding:16px}
  .brand-title{font-size:30px}
  .tagline{font-size:19px}
  .main-nav{padding:0 16px}
  .hero{height:180px}
  .hero-overlay{left:20px;top:24px}
  .hero h1{font-size:46px}
  .layout{display:block}
  .sidebar{display:none}
  .section-head{display:block}
  .tabs{margin-top:12px}
  .cards{grid-template-columns:1fr}
  footer{display:block;padding:18px}
  .footer-script{margin-top:8px}
}