/* ============================================================
   赛兰星群 · 世界观星图 — 深空科幻设计系统 v2
   SELANTINA CLUSTER — Worldview Star Atlas
   ============================================================ */
:root{
  --bg-0:#03060e;
  --bg-1:#060b18;
  --panel:rgba(11,20,38,.86);
  --panel-2:rgba(15,27,50,.72);
  --line:rgba(79,216,255,.16);
  --line-strong:rgba(79,216,255,.4);
  --ink:#d8e6ff;
  --ink-dim:#93a7c8;
  --ink-faint:#5d7296;
  --cyan:#4fd8ff;
  --blue:#57b8ff;
  --green:#58e6b0;
  --amber:#f0b95c;
  --red:#ff5d73;
  --purple:#c96bff;
  --gold:#ffd166;
  --gray:#8b9bb8;
  --radius:10px;
  --font:'Segoe UI','PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',sans-serif;
  --mono:'Cascadia Code','Consolas','Courier New',monospace;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(87,184,255,.09), transparent 62%),
    radial-gradient(900px 520px at 6% 108%, rgba(88,230,176,.07), transparent 62%),
    radial-gradient(700px 400px at 50% 50%, rgba(201,107,255,.04), transparent 65%),
    var(--bg-0);
  color:var(--ink);
  font-family:var(--font);
  line-height:1.72;
  min-height:100vh;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;opacity:.55;
  background-image:
    radial-gradient(1px 1px at 12% 18%, rgba(255,255,255,.5) 50%, transparent 51%),
    radial-gradient(1px 1px at 27% 66%, rgba(255,255,255,.35) 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 41% 34%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1px 1px at 55% 82%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 68% 22%, rgba(255,255,255,.42) 50%, transparent 51%),
    radial-gradient(1px 1px at 79% 58%, rgba(255,255,255,.34) 50%, transparent 51%),
    radial-gradient(1.3px 1.3px at 90% 41%, rgba(255,255,255,.38) 50%, transparent 51%),
    radial-gradient(1px 1px at 7% 90%, rgba(255,255,255,.3) 50%, transparent 51%),
    radial-gradient(1px 1px at 34% 8%, rgba(255,255,255,.4) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 63% 95%, rgba(255,255,255,.3) 50%, transparent 51%);
  background-size:340px 340px;
}

/* ---------------- 顶部导航 ---------------- */
.site-nav{
  position:sticky;top:0;z-index:50;
  background:rgba(4,8,18,.85);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
  display:flex;align-items:center;gap:24px;padding:0 26px;height:56px;
}
.brand{
  font-size:16.5px;font-weight:700;letter-spacing:2px;color:#fff;
  text-decoration:none;display:flex;align-items:baseline;gap:9px;white-space:nowrap;
}
.brand span{font-size:10.5px;color:var(--gold);letter-spacing:4px;font-weight:400}
.site-nav nav{display:flex;gap:2px;flex:1;justify-content:flex-end;flex-wrap:wrap}
.site-nav nav a{
  color:var(--ink-dim);text-decoration:none;font-size:13.5px;
  padding:6px 12px;border-radius:6px;transition:.2s;letter-spacing:.5px;white-space:nowrap;
}
.site-nav nav a:hover{color:var(--cyan);background:rgba(79,216,255,.08)}
.site-nav nav a.active{color:var(--cyan);background:rgba(79,216,255,.11)}
@media(max-width:920px){
  .site-nav{flex-wrap:wrap;height:auto;padding:10px 16px;gap:8px}
  .site-nav nav{justify-content:flex-start}
}

/* ---------------- 页面骨架 ---------------- */
.page{max-width:1120px;margin:0 auto;padding:0 24px 40px;position:relative;z-index:1}
.page-hero{padding:46px 0 18px;border-bottom:1px solid var(--line);margin-bottom:26px}
.eyebrow{font-family:var(--mono);font-size:11.5px;color:var(--cyan);letter-spacing:4px;text-transform:uppercase;margin-bottom:8px}
.page-hero h1{
  font-size:32px;letter-spacing:2px;font-weight:700;line-height:1.3;
  background:linear-gradient(92deg,#eaf6ff 10%,#4fd8ff 90%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .sub{color:var(--ink-dim);margin-top:8px;font-size:15px;max-width:780px}
.page-hero .meta{margin-top:12px;font-family:var(--mono);font-size:12px;color:var(--ink-faint);letter-spacing:1px}
.toc{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0 26px}
.toc a{
  font-size:13px;padding:4px 13px;border:1px solid var(--line);border-radius:999px;
  color:var(--ink-dim);text-decoration:none;transition:.2s;letter-spacing:.5px;
}
.toc a:hover{color:var(--cyan);border-color:var(--cyan)}
section.block{margin-bottom:36px;scroll-margin-top:72px}
.block h2{
  font-size:20.5px;letter-spacing:1.5px;margin-bottom:16px;color:#eaf3ff;
  display:flex;align-items:center;gap:11px;font-weight:600;
}
.block h2::before{content:"";width:4px;height:19px;border-radius:2px;
  background:linear-gradient(180deg,var(--cyan),rgba(79,216,255,0));flex:none}
.block h3{font-size:15.5px;margin:16px 0 7px;color:#eaf3ff}
.block p{margin:8px 0;color:var(--ink-dim);font-size:14.5px}
.block p strong{color:#cfe4ff;font-weight:600}
.block ul,.block ol{margin:8px 0 8px 22px;color:var(--ink-dim);font-size:14.5px}
.block li{margin:5px 0}
.block li strong{color:#cfe4ff}

/* ---------------- 卡片 ---------------- */
.card-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:14px}
.card{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px 16px;position:relative;overflow:hidden;transition:.25s;
}
.card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;
  background:linear-gradient(90deg,var(--cyan),rgba(79,216,255,0))}
.card:hover{transform:translateY(-3px);border-color:var(--line-strong);box-shadow:0 10px 30px rgba(0,0,0,.42)}
.card h3{margin:0 0 6px;font-size:15.5px;color:#eaf3ff;display:flex;align-items:center;gap:8px;padding-right:70px}
.card p{font-size:13.5px;color:var(--ink-dim);margin:0}
.card .tag{position:absolute;top:13px;right:14px}
.card .big{font-size:20px;color:var(--cyan);font-family:var(--mono);display:block;margin-bottom:4px}
.card a{color:var(--cyan);text-decoration:none}
.card a:hover{text-decoration:underline}

/* ---------------- 标签 ---------------- */
.tag{display:inline-block;font-size:11px;padding:2px 9px;border-radius:999px;letter-spacing:.5px;white-space:nowrap;font-weight:400}
.tag.empire{background:rgba(87,184,255,.13);color:var(--blue);border:1px solid rgba(87,184,255,.38)}
.tag.republic{background:rgba(88,230,176,.12);color:var(--green);border:1px solid rgba(88,230,176,.38)}
.tag.buffer{background:rgba(240,185,92,.12);color:var(--amber);border:1px solid rgba(240,185,92,.38)}
.tag.bug{background:rgba(255,93,115,.12);color:var(--red);border:1px solid rgba(255,93,115,.38)}
.tag.core{background:rgba(255,209,102,.12);color:var(--gold);border:1px solid rgba(255,209,102,.4)}
.tag.mid{background:rgba(139,155,184,.12);color:var(--gray);border:1px solid rgba(139,155,184,.38)}
.tag.frontier{background:rgba(201,107,255,.12);color:var(--purple);border:1px solid rgba(201,107,255,.38)}

/* ---------------- 统计 ---------------- */
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px;margin:14px 0}
.stat{background:var(--panel-2);border:1px solid var(--line);border-radius:var(--radius);padding:14px 10px;text-align:center}
.stat b{display:block;font-size:21px;color:var(--cyan);font-family:var(--mono);letter-spacing:1px;line-height:1.3}
.stat span{font-size:12px;color:var(--ink-faint);letter-spacing:.5px}

/* ---------------- 表格 ---------------- */
.table-wrap{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--line)}
table.table{width:100%;border-collapse:collapse;font-size:13.5px;background:var(--panel-2);min-width:520px}
.table th{background:rgba(79,216,255,.09);color:#cfeaff;text-align:left;padding:9px 14px;font-weight:600;border-bottom:1px solid var(--line-strong);white-space:nowrap}
.table td{padding:8px 14px;border-bottom:1px solid var(--line);color:var(--ink-dim);vertical-align:top}
.table tr:last-child td{border-bottom:none}
.table td:first-child{color:#eaf3ff;white-space:nowrap}
.table tr:hover td{background:rgba(79,216,255,.04)}

/* ---------------- 时间线 ---------------- */
.timeline{position:relative;padding-left:28px;margin:14px 0}
.timeline::before{content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--cyan),var(--blue),var(--purple),var(--red))}
.tl-item{position:relative;margin-bottom:22px}
.tl-item::before{content:"";position:absolute;left:-26px;top:7px;width:11px;height:11px;border-radius:50%;
  background:var(--bg-0);border:2px solid var(--cyan);box-shadow:0 0 10px rgba(79,216,255,.65)}
.tl-item.warn::before{border-color:var(--amber);box-shadow:0 0 10px rgba(240,185,92,.6)}
.tl-item.danger::before{border-color:var(--red);box-shadow:0 0 10px rgba(255,93,115,.6)}
.tl-item .tl-year{font-family:var(--mono);font-size:13px;color:var(--cyan);letter-spacing:.5px}
.tl-item .tl-title{font-weight:600;color:#eaf3ff;margin-left:8px;font-size:14.5px}
.tl-item .tl-desc{font-size:13.5px;color:var(--ink-dim);margin-top:3px}
.tl-item .tl-tags{margin-top:4px}

/* ---------------- 警示面板 ---------------- */
.panel{border-left:3px solid var(--amber);background:rgba(240,185,92,.06);padding:12px 16px;
  border-radius:0 var(--radius) var(--radius) 0;margin:14px 0;font-size:13.5px;color:var(--ink-dim)}
.panel.blue{border-color:var(--cyan);background:rgba(79,216,255,.05)}
.panel.red{border-color:var(--red);background:rgba(255,93,115,.05)}
.panel.green{border-color:var(--green);background:rgba(88,230,176,.05)}
.panel b{color:#eaf3ff}

/* ---------------- 层级列表 ---------------- */
.layers{list-style:none;counter-reset:l}
.layers li{position:relative;padding:12px 16px 12px 54px;background:var(--panel-2);
  border:1px solid var(--line);border-radius:8px;margin-bottom:8px;font-size:14px;color:var(--ink-dim)}
.layers li b{color:#eaf3ff}
.layers li::before{counter-increment:l;content:counter(l);
  position:absolute;left:14px;top:50%;transform:translateY(-50%);
  width:27px;height:27px;border-radius:50%;border:1px solid var(--cyan);color:var(--cyan);
  display:flex;align-items:center;justify-content:center;font-family:var(--mono);font-size:13px}

/* ---------------- 双栏 ---------------- */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media(max-width:840px){.grid2{grid-template-columns:1fr}}

/* ============================================================
   地图页 v2 — 粒子层 / SVG / 信息抽屉
   ============================================================ */
.map-hero{padding:36px 0 10px;text-align:center}
.map-hero h1{font-size:36px;letter-spacing:6px;font-weight:700;
  background:linear-gradient(92deg,#eaf6ff,#4fd8ff 55%,#c96bff);
  -webkit-background-clip:text;background-clip:text;color:transparent}
.map-hero .sub{color:var(--ink-dim);margin-top:10px;font-size:15px;letter-spacing:2px}
.map-wrap{
  position:relative;border:1px solid var(--line-strong);border-radius:14px;overflow:hidden;
  background:radial-gradient(1000px 520px at 70% 28%, rgba(28,58,110,.28), transparent 70%), #02040a;
  box-shadow:0 22px 60px rgba(0,0,0,.55);margin-top:20px;
}
.map-wrap canvas#fx{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;z-index:1}
.map-wrap svg{position:relative;z-index:2;display:block;width:100%;height:auto}

.map-tooltip{
  position:absolute;pointer-events:none;z-index:20;opacity:0;transition:opacity .14s;
  background:rgba(6,11,22,.96);border:1px solid var(--line-strong);border-radius:9px;
  padding:10px 14px;font-size:12.5px;max-width:280px;box-shadow:0 10px 34px rgba(0,0,0,.65);
  transform:translate(14px,-46%);
}
.map-tooltip .tt-name{color:#fff;font-weight:600;font-size:14px;letter-spacing:.5px;display:flex;align-items:center;gap:7px;flex-wrap:wrap}
.map-tooltip .tt-desc{color:var(--ink-dim);font-size:12px;margin-top:4px;line-height:1.55}
.map-tooltip .tt-nav{color:var(--cyan);font-size:11px;margin-top:5px;letter-spacing:1px;opacity:.9}

.map-legend{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:14px;font-size:12px;color:var(--ink-dim);justify-content:center}
.map-legend .lg{display:flex;align-items:center;gap:7px}
.map-legend .dot{width:10px;height:10px;border-radius:50%;flex:none}
.map-hint{text-align:center;color:var(--ink-faint);font-size:12px;margin-top:12px;letter-spacing:2px}

/* ---------------- 信息抽屉（星区钻取） ---------------- */
.info-drawer{
  position:absolute;top:0;right:0;bottom:0;width:min(400px,88%);z-index:30;
  background:linear-gradient(180deg,rgba(7,13,26,.97),rgba(4,8,18,.99));
  border-left:1px solid var(--line-strong);
  box-shadow:-20px 0 60px rgba(0,0,0,.65);
  transform:translateX(103%);transition:transform .34s cubic-bezier(.22,.8,.3,1);
  display:flex;flex-direction:column;
}
.info-drawer.open{transform:translateX(0)}
.dr-inner{display:flex;flex-direction:column;height:100%;overflow:hidden}
.dr-head{display:flex;align-items:center;gap:10px;padding:15px 16px 11px;border-bottom:1px solid var(--line);flex:none}
.dr-head h3{font-size:16.5px;letter-spacing:1px;color:#fff;flex:1;margin:0;display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.dr-close{
  background:rgba(79,216,255,.08);border:1px solid var(--line);color:var(--cyan);
  width:30px;height:30px;border-radius:8px;cursor:pointer;font-size:16px;line-height:1;transition:.2s;flex:none;
}
.dr-close:hover{background:rgba(79,216,255,.22)}
.dr-crumbs{padding:9px 16px 0;font-size:12px;color:var(--ink-faint);flex:none;display:flex;flex-wrap:wrap;gap:4px;align-items:center}
.dr-crumbs .sep{color:var(--ink-faint);opacity:.6}
.dr-crumbs a{color:var(--cyan);cursor:pointer;text-decoration:none}
.dr-crumbs a:hover{text-decoration:underline}
.dr-body{flex:1;overflow-y:auto;padding:14px 16px 26px}
.dr-body::-webkit-scrollbar{width:6px}
.dr-body::-webkit-scrollbar-thumb{background:rgba(79,216,255,.25);border-radius:3px}
.dr-desc{font-size:13.5px;color:var(--ink-dim);margin-bottom:14px;line-height:1.7}
.dr-facts{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.dr-fact{font-size:11.5px;padding:3px 10px;border-radius:999px;border:1px solid var(--line);color:var(--ink-dim);background:rgba(79,216,255,.05)}
.dr-list{display:flex;flex-direction:column;gap:8px}
.dr-item{
  background:var(--panel-2);border:1px solid var(--line);border-radius:9px;
  padding:11px 13px;cursor:pointer;transition:.2s;position:relative;
}
.dr-item:hover{border-color:var(--line-strong);background:rgba(79,216,255,.07);transform:translateX(3px)}
.dr-item .di-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.dr-item .di-name{color:#eaf3ff;font-size:14px;font-weight:600}
.dr-item .di-type{font-size:11px;color:var(--cyan);letter-spacing:.5px;flex:none;border:1px solid rgba(79,216,255,.3);border-radius:4px;padding:0 6px}
.dr-item .di-desc{font-size:12.5px;color:var(--ink-dim);margin-top:4px;line-height:1.55}
.dr-item.nolink{cursor:default}
.dr-item.nolink:hover{transform:none;background:var(--panel-2);border-color:var(--line)}
.dr-section{font-size:11.5px;color:var(--ink-faint);letter-spacing:2px;margin:16px 0 8px;display:flex;align-items:center;gap:8px}
.dr-section::after{content:"";flex:1;height:1px;background:var(--line)}
.dr-note{font-size:12px;color:var(--ink-faint);background:rgba(240,185,92,.05);border-left:2px solid var(--amber);padding:8px 12px;border-radius:0 6px 6px 0;margin-top:12px;line-height:1.6}

/* ---------------- 栏目入口卡 ---------------- */
.section-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px;margin:34px 0 10px}
.sec-card{
  display:flex;flex-direction:column;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--radius);padding:22px 22px 20px;text-decoration:none;color:inherit;
  transition:.25s;position:relative;overflow:hidden;
}
.sec-card::after{content:"→";position:absolute;right:20px;bottom:16px;color:var(--cyan);opacity:0;transition:.25s;font-size:22px}
.sec-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 14px 42px rgba(0,0,0,.5)}
.sec-card:hover::after{opacity:1}
.sec-card .icon{font-size:30px;margin-bottom:10px;filter:drop-shadow(0 0 10px rgba(79,216,255,.5))}
.sec-card h3{font-size:17.5px;color:#fff;letter-spacing:1.5px;margin-bottom:7px}
.sec-card p{font-size:13px;color:var(--ink-dim);flex:1}
.sec-card .go{font-size:12px;color:var(--cyan);margin-top:13px;letter-spacing:2.5px;opacity:.85}

/* ---------------- 页脚 ---------------- */
.site-footer{margin-top:56px;padding:26px 0 34px;border-top:1px solid var(--line);
  color:var(--ink-faint);font-size:12.5px;text-align:center;position:relative;z-index:1}
.site-footer a{color:var(--ink-dim);text-decoration:none;margin:0 6px}
.site-footer a:hover{color:var(--cyan)}

@media(max-width:720px){
  .page{padding:0 16px 30px}
  .page-hero h1{font-size:26px}
  .map-hero h1{font-size:26px;letter-spacing:3px}
}