/* 萧泊的海王星 · 全站共用样式 */
:root{
  --red:#c8102e;
  --red-2:#a20d25;
  --ink:#16202b;
  --ink-2:#5c6b7a;
  --ink-3:#93a1b0;
  --line:rgba(30,80,140,.10);
  --line-2:rgba(30,80,140,.055);
  --blue:#2f6fb5;
  --card:rgba(255,255,255,.74);
  --card-2:rgba(255,255,255,.86);
  --shadow:0 1px 2px rgba(28,68,124,.06),0 6px 20px rgba(28,68,124,.06);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0}

body{
  min-height:100vh;
  color:var(--ink);
  font:15px/1.78 -apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  background:
    radial-gradient(120% 52% at 50% -12%,#cfe6ff 0%,rgba(207,230,255,0) 58%),
    radial-gradient(85% 44% at 104% -2%,#e4f2ff 0%,rgba(228,242,255,0) 55%),
    linear-gradient(180deg,#f2f8fe 0%,#e3f0fb 45%,#cfe3f7 100%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

/* ---------- 背景层：鲸鱼娘 ---------- */
.bglayer{
  position:fixed;inset:0;overflow:hidden;pointer-events:none;z-index:0;
  filter:blur(3.2px);
}
.whale{position:absolute;color:var(--blue);opacity:.15}
.whale.wa{width:190px;right:-26px;bottom:-4px;transform:rotate(-5deg)}
.whale.wb{width:198px;left:-56px;bottom:13%;transform:rotate(-7deg);opacity:.115}
.whale.wc{width:132px;right:-38px;bottom:42%;transform:rotate(-9deg);opacity:.075}
body.sub .whale.wa{opacity:.09}
body.sub .whale.wb{opacity:.07}
body.sub .whale.wc{opacity:.05}

/* ---------- 容器 ---------- */
.wrap{
  position:relative;z-index:1;
  max-width:816px;margin:0 auto;
  padding:0 16px;
}

/* ---------- 顶部站名 ---------- */
.topbar{
  position:relative;z-index:2;
  max-width:816px;margin:0 auto;
  padding:22px 16px 6px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;
}
.brand{
  text-decoration:none;color:var(--ink);
  font-size:19px;font-weight:800;letter-spacing:0;white-space:nowrap;
}
.brand span{color:inherit}
h1 span{color:inherit}
.brand small{
  font-size:11px;font-weight:500;color:var(--ink-3);letter-spacing:.5px;
}
.back{
  display:inline-flex;align-items:center;
  font-size:12.5px;font-weight:600;color:#123c66;text-decoration:none;
  padding:7px 15px;border-radius:99px;
  background:#93c1ea;
  border:1px solid rgba(18,60,102,.18);
  box-shadow:0 1px 3px rgba(18,60,102,.12);
}
.back:active{background:#7fb0df}

/* ---------- 首页 hero ---------- */
.hero{padding:26px 0 10px}
.hero h1{
  margin:0 0 8px;font-size:34px;line-height:1.25;letter-spacing:-.5px;font-weight:800;
}
.hero h1 em{font-style:normal}
.hero p{margin:0;color:var(--ink-2);font-size:13.5px}

/* ---------- 板块卡片 ---------- */
.boards{display:grid;gap:12px;margin:22px 0 8px}
.board{
  display:block;position:relative;overflow:hidden;
  padding:18px 18px 16px;
  border-radius:16px;
  background:var(--card);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
  text-decoration:none;color:inherit;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
}
.board:active{transform:scale(.985)}
.board .ic{font-size:22px;line-height:1;display:block;margin-bottom:9px}
.board h2{margin:0 0 5px;font-size:16.5px;font-weight:700;letter-spacing:.2px}
.board p{margin:0;font-size:12.5px;color:var(--ink-2);line-height:1.6}
.board .go{
  position:absolute;right:16px;top:18px;
  color:var(--ink-3);font-size:16px;
}
.board .badge{
  position:absolute;right:16px;bottom:16px;
  font-size:11px;color:var(--ink-2);font-weight:600;
}

/* ---------- 通用卡片 / 列表 ---------- */
.card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:16px;
  box-shadow:var(--shadow);
  overflow:hidden;
}
.sect{
  margin:22px 0 10px;
  font-size:12px;font-weight:700;color:var(--ink-3);
  letter-spacing:1.6px;
}

/* ---------- 页脚 ---------- */
.sign{
  text-align:center;color:var(--ink-3);
  font-size:11.5px;line-height:1.9;
  margin:34px 0 40px;
}
.sign b{color:var(--ink-2);font-weight:600}
.sign a{color:inherit;text-decoration:none;border-bottom:1px dotted var(--ink-3)}

/* ---------- 文章排版 ---------- */
.prose{padding:20px 18px 26px}
.prose > h2{
  margin:30px 0 12px;padding-top:6px;
  font-size:18px;font-weight:800;color:var(--ink);
  letter-spacing:-.2px;
}
.prose > h2:first-child{margin-top:4px}
.prose h3{
  margin:22px 0 9px;font-size:15px;font-weight:700;color:var(--ink);
}
.prose h4{
  margin:18px 0 7px;font-size:13.5px;font-weight:700;color:var(--blue);
}
.prose p{margin:0 0 11px;text-align:justify}
.prose ul{margin:0 0 13px;padding-left:0;list-style:none}
.prose ul li{
  position:relative;padding-left:15px;margin-bottom:7px;text-align:justify;
}
.prose ul li::before{
  content:"";position:absolute;left:2px;top:9px;
  width:5px;height:5px;border-radius:50%;
  background:var(--blue);opacity:.45;
}
.prose table{
  width:100%;border-collapse:collapse;margin:8px 0 16px;
  font-size:12.5px;
}
.prose th,.prose td{
  border:1px solid var(--line);padding:7px 9px;text-align:left;vertical-align:top;
}
.prose th{background:rgba(47,111,181,.06);font-weight:700}
.prose code{
  background:rgba(47,111,181,.08);padding:1px 5px;border-radius:4px;
  font-size:.92em;
}
.prose strong{font-weight:700}
.prose blockquote{
  margin:12px 0;padding:10px 14px;
  border-left:3px solid var(--blue);
  background:rgba(255,255,255,.5);
  border-radius:0 8px 8px 0;
  color:var(--ink-2);font-size:14px;
}

/* ---------- 章节导航 ---------- */
.toc{display:grid;gap:9px}
.toc a{
  display:block;padding:14px 16px;
  background:var(--card);border:1px solid var(--line);border-radius:13px;
  text-decoration:none;color:inherit;
  box-shadow:0 1px 2px rgba(28,68,124,.04);
  transition:background .15s ease;
}
.toc a:active{background:var(--card-2)}
.toc .n{
  display:inline-block;min-width:26px;
  font-size:11.5px;font-weight:700;color:var(--ink-3);letter-spacing:.5px;
}
.toc .t{font-size:14.5px;font-weight:600}
.toc .d{display:block;margin-top:3px;font-size:11.5px;color:var(--ink-3);line-height:1.6}

/* ---------- 上一页/下一页 ---------- */
.pager{
  display:flex;gap:10px;margin:18px 0 6px;
}
.pager a{
  flex:1;padding:12px 14px;
  background:var(--card);border:1px solid var(--line);border-radius:12px;
  text-decoration:none;color:var(--ink-2);font-size:13px;text-align:center;
}
.pager a span{display:block;font-size:10.5px;color:var(--ink-3);margin-bottom:2px}

/* ---------- 深色模式 ---------- */
@media (prefers-color-scheme:dark){
  :root{
    --ink:#e8eef6;
    --ink-2:#9fb0c2;
    --ink-3:#6d8094;
    --line:rgba(130,180,235,.13);
    --line-2:rgba(130,180,235,.07);
    --card:rgba(20,36,56,.62);
    --card-2:rgba(26,44,66,.86);
    --shadow:0 1px 2px rgba(0,0,0,.3),0 8px 24px rgba(0,0,0,.22);
  }
  body{
    background:
      radial-gradient(120% 52% at 50% -12%,rgba(38,86,140,.55) 0%,rgba(38,86,140,0) 58%),
      linear-gradient(180deg,#0b1826 0%,#0a1420 45%,#0b1726 100%);
    background-attachment:fixed;
  }
  .whale{color:#4d8fd4;opacity:.13}
  .back{background:#24507c;color:#a8cdf0;border-color:rgba(168,205,240,.2)}
  .brand{color:var(--ink)}
  .prose blockquote{background:rgba(255,255,255,.04)}
  .prose th{background:rgba(120,180,240,.08)}
  .prose code{background:rgba(120,180,240,.12)}
}