/* 51吃瓜网 · 每日大赛专题馆（文件11）· 高级质感：墨绿/象牙白 + 精细排版 */
:root{
  color-scheme: light;
  --bg:#f5f2ea;
  --paper:#fffdf8;
  --ink:#101418;
  --muted: rgba(16,20,24,.72);
  --muted2: rgba(16,20,24,.56);
  --line: rgba(16,20,24,.14);
  --hair: rgba(16,20,24,.10);
  --shadow: 0 18px 50px rgba(16,20,24,.10);
  --shadow2: 0 10px 28px rgba(16,20,24,.08);
  --r1: 22px;
  --r2: 16px;
  --wrap: 1160px;

  --forest:#0f2f2a;
  --forest2:#17443b;
  --gold:#b0894f;
  --clay:#b45309;
  --slate:#334155;
}
*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial,
    "PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC","Noto Sans SC",sans-serif;
  color: var(--ink);
  line-height: 1.75;
  background:
    radial-gradient(980px 520px at 10% 0%, rgba(15,47,42,.10), transparent 60%),
    radial-gradient(900px 520px at 90% 10%, rgba(176,137,79,.10), transparent 55%),
    linear-gradient(180deg, #fff, var(--bg));
}
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
.wrap{ width:100%; max-width: var(--wrap); margin:0 auto; padding:0 18px; }
.sr-only{
  position:absolute!important; width:1px;height:1px;
  overflow:hidden; clip: rect(1px,1px,1px,1px); white-space:nowrap;
}
.skip{
  position:absolute; left:-999px; top:10px;
  padding:10px 12px; border-radius: 12px;
  background: var(--paper); border:1px solid var(--line); box-shadow: var(--shadow2);
}
.skip:focus{ left:12px; z-index: 99; }

/* 顶部：高级“刊头” */
.mast{
  position: sticky;
  top:0;
  z-index: 60;
  background: rgba(245,242,234,.86);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(16,20,24,.10);
}
.mast-top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 16px 0 12px;
}
.brand{
  display:flex;
  align-items:center;
  gap: 12px;
  min-width: 280px;
}
.seal{
  width: 44px; height:44px;
  border-radius: 14px;
  display:grid; place-items:center;
  background: linear-gradient(135deg, rgba(15,47,42,.14), rgba(176,137,79,.12));
  border:1px solid rgba(15,47,42,.22);
  box-shadow: 0 18px 40px rgba(15,47,42,.12);
  font-weight: 900;
  letter-spacing:.6px;
  color: var(--forest);
}
.brand strong{ letter-spacing:.2px; }
.brand small{ display:block; margin-top:2px; font-size:12px; color: var(--muted2); }

.search{
  display:flex; align-items:center; gap: 10px;
  min-width: 340px;
}
.search input{
  width:100%;
  padding: 10px 12px;
  border-radius: 14px;
  border:1px solid rgba(16,20,24,.16);
  background: rgba(255,255,255,.78);
  outline:none;
}
.search input:focus{
  border-color: rgba(15,47,42,.34);
  box-shadow: 0 0 0 4px rgba(15,47,42,.10);
}
.search button{
  padding: 10px 12px;
  border-radius: 14px;
  border:1px solid rgba(16,20,24,.16);
  background: rgba(255,255,255,.88);
  cursor:pointer;
  color: rgba(16,20,24,.86);
}
.search button:hover{ background: rgba(16,20,24,.03); }

.nav{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  padding: 0 0 14px;
}
.nav a{
  padding: 8px 12px;
  border-radius: 999px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,255,255,.58);
  color: rgba(16,20,24,.86);
  font-size: 13px;
}
.nav a:hover{ background: rgba(255,255,255,.86); }
.nav a.on{
  border-color: rgba(15,47,42,.18);
  background: linear-gradient(135deg, rgba(15,47,42,.10), rgba(176,137,79,.10));
}

main{ padding: 18px 0 46px; }

/* 基础卡片 */
.card{
  border-radius: var(--r1);
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,253,248,.92);
  box-shadow: var(--shadow2);
}

/* 首页：专题总览 */
.hero{
  border-radius: 28px;
  border:1px solid rgba(16,20,24,.12);
  background:
    radial-gradient(980px 420px at 12% 0%, rgba(15,47,42,.10), transparent 60%),
    radial-gradient(900px 520px at 92% 0%, rgba(176,137,79,.10), transparent 55%),
    rgba(255,253,248,.92);
  box-shadow: var(--shadow);
  overflow:hidden;
}
.hero-inner{
  display:grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 12px;
  padding: 18px;
  align-items: stretch;
}
.hero h1{
  margin:0 0 10px;
  font-size: 34px;
  line-height: 1.15;
  letter-spacing:.2px;
}
.lede{
  margin:0;
  color: var(--muted);
  max-width: 74ch;
}
.actions{
  display:flex;
  flex-wrap:wrap;
  gap: 10px;
  margin-top: 14px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding: 10px 12px;
  border-radius: 14px;
  border:1px solid rgba(16,20,24,.14);
  background: rgba(255,255,255,.82);
  color: rgba(16,20,24,.86);
  font-weight: 800;
}
.btn.primary{
  border-color: rgba(15,47,42,.18);
  background: linear-gradient(135deg, rgba(15,47,42,.12), rgba(176,137,79,.12));
}
.btn:hover{ background: rgba(16,20,24,.03); }
.hero-media{
  border-radius: 22px;
  border:1px solid rgba(16,20,24,.12);
  overflow:hidden;
  background: rgba(16,20,24,.02);
}
.hero-media img{ width:100%; height:100%; min-height: 280px; object-fit: cover; }

/* 首页：三段式档案区 */
.section{
  margin-top: 18px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.section-head h2{ margin:0; font-size: 18px; letter-spacing:.2px; }
.section-head p{ margin:0; color: var(--muted2); font-size: 12px; }

.archive{
  display:grid;
  grid-template-columns: 360px 1fr;
  gap: 12px;
  align-items:start;
}
.rail{
  padding: 14px;
}
.rail h3{ margin:0 0 10px; font-size: 14px; }
.rail a{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 10px;
  padding: 10px 10px;
  border-radius: 16px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,255,255,.70);
  margin-top: 10px;
}
.rail a:first-of-type{ margin-top:0; }
.rail a:hover{ background: rgba(16,20,24,.03); }
.rail b{ font-size: 13px; }
.rail span{ color: var(--muted2); font-size: 12px; white-space: nowrap; }
.rail .note{
  margin-top: 12px;
  padding: 12px;
  border-radius: 18px;
  border:1px dashed rgba(16,20,24,.22);
  background: rgba(255,255,255,.55);
  color: var(--muted2);
  font-size: 12px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 12px;
}
.tile{
  border-radius: 20px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,255,255,.76);
  overflow:hidden;
  box-shadow: 0 12px 28px rgba(16,20,24,.08);
  transition: .15s ease;
}
.tile:hover{ transform: translateY(-2px); }
.tile img{ width:100%; height: 160px; object-fit: cover; }
.tile .meta{ padding: 12px; }
.tile h3{ margin:0 0 6px; font-size: 14px; line-height:1.25; }
.tile p{ margin:0; color: var(--muted2); font-size: 12px; }
.chips{ display:flex; flex-wrap:wrap; gap: 8px; margin-top: 10px; }
.chip{
  display:inline-flex;
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,255,255,.74);
  color: rgba(16,20,24,.78);
  font-size: 12px;
}
.chip.f{ border-color: rgba(15,47,42,.18); color: rgba(15,47,42,.86); background: rgba(15,47,42,.06); }
.chip.g{ border-color: rgba(176,137,79,.22); color: rgba(128,86,30,.90); background: rgba(176,137,79,.08); }
.chip.c{ border-color: rgba(51,65,85,.22); color: rgba(51,65,85,.90); background: rgba(51,65,85,.06); }

/* 列表页：四象限卡片索引（不同于之前墙/表格） */
.quad{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.panel{
  padding: 14px;
}
.panel h2{ margin:0 0 8px; font-size: 16px; }
.panel p{ margin:0 0 12px; color: var(--muted2); font-size: 12px; }
.rows{ display:grid; gap: 10px; }
.row{
  display:grid;
  grid-template-columns: 84px 1fr;
  gap: 10px;
  align-items:center;
  padding: 10px;
  border-radius: 16px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,255,255,.70);
}
.row .k{
  justify-self:start;
  padding: 6px 10px;
  border-radius: 999px;
  border:1px solid rgba(15,47,42,.18);
  background: rgba(15,47,42,.06);
  color: rgba(15,47,42,.90);
  font-size: 12px;
  font-weight: 800;
}
.row b{ display:block; font-size: 13px; }
.row span{ display:block; margin-top: 4px; color: var(--muted2); font-size: 12px; }

/* 内容页：正文 + 右侧参数卡 */
.doc{
  display:grid;
  grid-template-columns: 1fr 360px;
  gap: 12px;
  align-items:start;
}
.paper{
  padding: 18px;
}
.crumb{
  display:flex;
  gap: 8px;
  flex-wrap:wrap;
  color: var(--muted2);
  font-size: 12px;
  margin-bottom: 10px;
}
.paper h1{ margin:0 0 10px; font-size: 22px; line-height: 1.25; }
.paper h2{ margin: 16px 0 8px; font-size: 16px; }
.paper p{ margin: 10px 0; color: var(--muted); }
.paper ul{ margin: 10px 0 10px 18px; color: var(--muted); }
.timeline{
  margin-top: 12px;
  border-radius: 18px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(16,20,24,.02);
  padding: 12px;
}
.titem{
  display:grid;
  grid-template-columns: 82px 1fr;
  gap: 10px;
  padding: 10px 10px;
  border-top: 1px solid rgba(16,20,24,.10);
}
.titem:first-child{ border-top:none; }
.t{ font-weight: 900; color: rgba(16,20,24,.78); font-size: 12px; }
.titem b{ display:block; font-size: 13px; }
.titem span{ display:block; margin-top: 4px; color: var(--muted2); font-size: 12px; }

.aside{
  padding: 14px;
}
.aside h3{ margin:0 0 10px; font-size: 14px; }
.kv{ display:grid; gap: 10px; }
.kv div{
  padding: 10px;
  border-radius: 16px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,255,255,.72);
  color: rgba(16,20,24,.78);
  font-size: 12px;
}
.kv b{ color: rgba(16,20,24,.92); }
.aside .img{
  margin-top: 10px;
  border-radius: 18px;
  overflow:hidden;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(16,20,24,.02);
}

.footer{
  margin-top: 22px;
  border-top: 1px solid rgba(16,20,24,.10);
  background: rgba(255,253,248,.72);
}
.footrow{
  padding: 18px 0;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  flex-wrap:wrap;
  color: rgba(16,20,24,.72);
}

/* 移动端底部导航（极简） */
.bottom{
  display:none;
  position: fixed;
  left: 12px; right: 12px; bottom: 12px;
  z-index: 80;
  border-radius: 18px;
  border:1px solid rgba(16,20,24,.12);
  background: rgba(255,253,248,.92);
  box-shadow: var(--shadow2);
  padding: 10px;
}
.bottom a{
  flex:1 1 0;
  display:flex;
  align-items:center;
  justify-content:center;
  padding: 10px;
  border-radius: 14px;
  border:1px solid transparent;
  color: rgba(16,20,24,.76);
  font-size: 12px;
  font-weight: 800;
}
.bottom a.on{
  border-color: rgba(15,47,42,.18);
  background: rgba(15,47,42,.08);
  color: rgba(15,47,42,.92);
}

@media (max-width: 980px){
  .hero-inner{ grid-template-columns: 1fr; }
  .archive{ grid-template-columns: 1fr; }
  .grid{ grid-template-columns: repeat(2, minmax(0,1fr)); }
  .doc{ grid-template-columns: 1fr; }
  .quad{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .search{ display:none; }
  main{ padding-bottom: 92px; }
  .bottom{ display:flex; gap: 10px; }
}
@media (max-width: 420px){
  .grid{ grid-template-columns: 1fr; }
}