/* =========================================================
   家乐棋牌中心 · 共享样式 /assets/site.css
   01 变量与重置  02 底纹与排版  03 版面骨架  04 通用组件
   05 头部  06 页脚  07 动效与响应式
   ========================================================= */

/* ---------- 01 变量与重置 ---------- */
:root{
  --bg:#05070C;
  --panel:#0B1018;
  --layer:#101826;
  --cyan:#00F0C8;
  --violet:#7A5CFF;
  --orange:#FF6B2C;
  --text:#E8F6FF;
  --muted:#8FA3B8;
  --line:#243247;
  --glow:#B8FFF2;
  --dim:#6D8095;
  --wrap:1240px;
  --gutter:clamp(12px,3vw,32px);
  --header-h:74px;
  --radius:18px;
  --radius-sm:10px;
  --mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Consolas,"Liberation Mono",Menlo,monospace;
  --head:"Arial Narrow","Helvetica Neue",Inter,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --hard:5px 5px 0 rgba(0,240,200,.16);
  --hard-violet:5px 5px 0 rgba(122,92,255,.22);
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg);
  color:var(--text);
  font-family:var(--body);
  font-size:16.5px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0 0 1em}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
[hidden]{display:none}
[id]{scroll-margin-top:calc(var(--header-h) + 32px)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
::selection{background:var(--violet);color:#07040F}

/* ---------- 02 底纹与排版 ---------- */
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;opacity:.24;
  background-image:
    linear-gradient(rgba(36,50,71,.6) 1px,transparent 1px),
    linear-gradient(90deg,rgba(36,50,71,.6) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(120% 78% at 50% 0%,#000 0%,transparent 76%);
  mask-image:radial-gradient(120% 78% at 50% 0%,#000 0%,transparent 76%);
}
body::after{
  content:"";position:fixed;left:0;right:0;top:-40%;height:40%;z-index:0;pointer-events:none;
  background:linear-gradient(180deg,transparent,rgba(0,240,200,.07) 55%,transparent);
  animation:scanline 12s linear infinite;
}
@keyframes scanline{from{transform:translateY(0)}to{transform:translateY(340vh)}}
h1,h2,h3,h4,h5{
  font-family:var(--head);font-weight:700;letter-spacing:-0.02em;line-height:1.2;
  margin:0 0 .55em;text-wrap:balance;
}
h1{font-size:clamp(30px,4.6vw,56px)}
h2{font-size:clamp(24px,3vw,40px)}
h3{font-size:clamp(19px,2vw,28px)}
h4{font-size:17px;letter-spacing:.01em}
.mono{font-family:var(--mono);letter-spacing:.02em}
.muted{color:var(--muted)}
.glow{color:var(--glow)}
.lead{font-size:clamp(16px,1.5vw,18.5px);color:var(--muted);max-width:62ch}
.num-anchor{display:block;font-family:var(--mono);font-size:clamp(38px,7vw,88px);line-height:1;color:var(--cyan);letter-spacing:-0.03em}

/* ---------- 03 版面骨架 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap-wide{max-width:min(100%,1520px)}
.site-main{position:relative;z-index:1;padding-top:calc(var(--header-h) + 30px);padding-bottom:clamp(48px,8vw,110px)}
.section{padding-block:clamp(34px,6vw,86px)}
.section--ruled{border-top:2px solid var(--line)}
.section-head{display:grid;gap:10px;margin-bottom:clamp(20px,3vw,36px);max-width:70ch}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:26px;height:2px;background:currentColor;flex:0 0 auto}
.eyebrow-violet{color:var(--violet)}
.eyebrow-orange{color:var(--orange)}
.grid{display:grid;gap:clamp(14px,2vw,26px)}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-auto{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.split-8-4{display:grid;gap:clamp(16px,2.4vw,34px);grid-template-columns:minmax(0,8fr) minmax(0,4fr)}
.split-7-5{display:grid;gap:clamp(16px,2.4vw,34px);grid-template-columns:minmax(0,7fr) minmax(0,5fr)}

/* ---------- 04 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 18px;border:2px solid var(--line);border-radius:999px;
  font-size:14.5px;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease,background .18s ease,color .18s ease;
}
.btn-primary{background:var(--cyan);border-color:var(--cyan);color:#03120F;box-shadow:4px 4px 0 rgba(0,240,200,.22)}
.btn-primary:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 rgba(0,240,200,.32)}
.btn-ghost{background:transparent;color:var(--text)}
.btn-ghost:hover{border-color:var(--cyan);color:var(--glow);box-shadow:4px 4px 0 rgba(0,240,200,.18)}
.btn-violet{background:var(--violet);border-color:var(--violet);color:#08040F;box-shadow:4px 4px 0 rgba(122,92,255,.28)}
.btn-violet:hover{transform:translate(-1px,-1px);box-shadow:6px 6px 0 rgba(122,92,255,.36)}
.btn-sm{height:32px;padding:0 14px;font-size:13px}
.btn-cta{height:36px;padding:0 16px;font-size:14px}

.crumbs{margin-bottom:clamp(16px,2.4vw,28px)}
.crumbs-list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:.05em}
.crumb a{color:var(--muted);border-bottom:1px solid transparent;transition:color .18s,border-color .18s}
.crumb a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.crumb-sep{color:var(--line)}
.crumb-current{color:var(--text)}

.card{
  position:relative;overflow:hidden;display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(16,24,38,.88),rgba(11,16,24,.94));
  border:2px solid var(--line);border-radius:var(--radius);
  padding:clamp(16px,2vw,24px);box-shadow:var(--hard);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(0,240,200,.14),transparent);
  transform:translateX(-101%);transition:transform .55s ease;
}
.card:hover{border-color:rgba(0,240,200,.55);transform:translate(-1px,-2px);box-shadow:7px 7px 0 rgba(0,240,200,.2)}
.card:hover::after{transform:translateX(101%)}
.card--accent{border-color:var(--cyan)}
.card--violet{border-color:var(--violet);box-shadow:var(--hard-violet)}
.card--flat{box-shadow:none}
.card-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.card-title{font-size:clamp(18px,1.8vw,22px);margin:0 0 8px}
.card-meta{font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:.05em}
.card-body{font-size:15.5px;color:var(--muted);margin:0 0 14px}
.card-foot{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:auto;padding-top:12px;border-top:2px solid var(--line)}

.tag{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border:2px solid currentColor;border-radius:6px;
  font-family:var(--mono);font-size:11.5px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--cyan);background:rgba(0,240,200,.08);
}
.tag-violet{color:var(--violet);background:rgba(122,92,255,.12)}
.tag-orange{color:var(--orange);background:rgba(255,107,44,.12)}
.tag-muted{color:var(--muted);background:rgba(143,163,184,.08)}

.chip{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border:2px solid var(--line);border-radius:999px;
  font-family:var(--mono);font-size:12.5px;color:var(--muted);background:rgba(16,24,38,.7);
  transition:color .18s,border-color .18s,background .18s,box-shadow .18s,transform .18s;
}
.chip:hover{border-color:var(--glow);color:var(--text);transform:translateY(-1px)}
.chip[aria-pressed="true"]{
  background:var(--violet);border-color:var(--violet);color:#08040F;
  box-shadow:3px 3px 0 rgba(0,240,200,.35);
}

.data-band{
  width:100vw;margin-left:calc(50% - 50vw);margin-block:clamp(28px,5vw,64px);
  background:linear-gradient(90deg,rgba(0,240,200,.12),rgba(122,92,255,.14) 55%,rgba(255,107,44,.12));
  border-top:2px solid var(--line);border-bottom:2px solid var(--line);
  padding-block:clamp(18px,2.6vw,30px);
}
.data-band-inner{
  width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter);
  display:grid;gap:clamp(14px,2vw,28px);grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
}
.band-item{display:grid;gap:4px;padding-left:14px;border-left:3px solid var(--cyan)}
.band-item:nth-child(2){border-left-color:var(--violet)}
.band-item:nth-child(3){border-left-color:var(--orange)}
.band-item:nth-child(4){border-left-color:var(--line)}
.band-num{font-family:var(--mono);font-size:clamp(22px,3vw,34px);line-height:1;color:var(--text);letter-spacing:-0.02em}
.band-label{font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}

.timeline{position:relative;padding-left:30px;border-left:2px solid var(--line)}
.tl-item{position:relative;padding:0 0 clamp(20px,3vw,34px) clamp(14px,2vw,22px)}
.tl-item:last-child{padding-bottom:0}
.tl-node{
  position:absolute;left:-41px;top:6px;width:20px;height:20px;
  background:var(--layer);border:2px solid var(--line);transform:rotate(45deg);
}
.tl-item.is-current .tl-node{border-color:var(--orange);background:var(--orange);animation:pulse 2.4s ease-in-out infinite}
.tl-time{display:block;font-family:var(--mono);font-size:12.5px;color:var(--cyan);letter-spacing:.08em;margin-bottom:4px}
.tl-title{font-size:18px;margin:0 0 6px}
.tl-body{color:var(--muted);font-size:15.5px;margin:0}
@keyframes pulse{0%,100%{box-shadow:0 0 0 0 rgba(255,107,44,.55)}50%{box-shadow:0 0 0 8px rgba(255,107,44,0)}}

.archive-layout{display:grid;gap:clamp(18px,2.6vw,36px);grid-template-columns:200px minmax(0,1fr);align-items:start}
.archive-rail{
  position:sticky;top:calc(var(--header-h) + 24px);display:grid;gap:4px;
  border:2px solid var(--line);border-radius:var(--radius-sm);background:rgba(11,16,24,.82);padding:14px;
}
.rail-title{font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);margin:0 0 6px}
.rail-link{
  display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:8px;
  font-size:14px;color:var(--muted);text-align:left;
  transition:color .18s,background .18s,transform .18s;
}
.rail-link::before{content:"";width:6px;height:6px;background:currentColor;transform:rotate(45deg);flex:0 0 auto}
.rail-link:hover{color:var(--text);background:rgba(0,240,200,.08)}
.rail-link.is-current{color:var(--cyan);background:rgba(0,240,200,.12);transform:translateX(2px)}
.archive-stream{display:grid;gap:clamp(16px,2.4vw,28px)}

.stat{display:grid;gap:6px}
.stat-num{font-family:var(--mono);font-size:clamp(26px,3.4vw,40px);line-height:1;color:var(--cyan);letter-spacing:-0.02em}
.stat-label{font-size:13px;color:var(--muted);letter-spacing:.06em}

.table-wrap{overflow-x:auto;border:2px solid var(--line);border-radius:var(--radius-sm);background:rgba(16,24,38,.5)}
.data-table{min-width:560px;font-size:15px}
.data-table caption{text-align:left;font-family:var(--mono);font-size:12.5px;color:var(--muted);padding:12px 14px;letter-spacing:.08em}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:2px solid var(--line);vertical-align:top}
.data-table thead th{
  font-family:var(--mono);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--cyan);background:rgba(0,240,200,.06);white-space:nowrap;
}
.data-table tbody tr:nth-child(even){background:rgba(16,24,38,.6)}
.data-table tbody tr:hover{background:rgba(122,92,255,.12)}
.data-table tbody tr:last-child th,.data-table tbody tr:last-child td{border-bottom:0}

.qa-item{border:2px solid var(--line);border-radius:var(--radius-sm);background:rgba(11,16,24,.72);padding:clamp(14px,2vw,20px)}
.qa-item + .qa-item{margin-top:12px}
.qa-q{display:flex;gap:10px;font-size:17px;margin:0 0 8px}
.qa-q::before{content:"Q";font-family:var(--mono);color:var(--cyan);flex:0 0 auto}
.qa-a{margin:0;color:var(--muted);font-size:15.5px}

.tabs{display:grid;gap:16px}
.tablist{display:flex;flex-wrap:wrap;gap:8px;border-bottom:2px solid var(--line);padding-bottom:10px}
.tab{
  height:34px;padding:0 14px;border:2px solid var(--line);border-radius:999px;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:var(--muted);
  transition:color .18s,border-color .18s,background .18s;
}
.tab:hover{color:var(--text);border-color:var(--glow)}
.tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:#03120F}
.tabpanel{outline:none}
.tabpanel[hidden]{display:none}

.notice{
  border:2px solid var(--orange);border-left-width:6px;border-radius:var(--radius-sm);
  background:rgba(255,107,44,.08);padding:14px 18px;font-size:15px;color:var(--text);
}
.marker-list{display:grid;gap:10px}
.marker-list li{position:relative;padding-left:22px;color:var(--muted)}
.marker-list li::before{content:"";position:absolute;left:0;top:.62em;width:10px;height:10px;border:2px solid var(--cyan);transform:rotate(45deg)}

.figure{margin:0;display:grid;gap:10px}
.figure-frame{
  position:relative;overflow:hidden;border:2px solid var(--line);border-radius:var(--radius-sm);
  background:
    radial-gradient(120% 100% at 20% 0%,rgba(0,240,200,.12),transparent 60%),
    linear-gradient(160deg,var(--layer),var(--panel));
  box-shadow:6px 6px 0 rgba(0,0,0,.5);
}
.figure-frame img{width:100%;height:100%;object-fit:cover;filter:contrast(1.06) saturate(1.05)}
.figure-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;mix-blend-mode:screen;
  background:repeating-linear-gradient(180deg,rgba(0,240,200,.08) 0 1px,transparent 1px 4px);
}
.ratio-16x9{aspect-ratio:16/9}
.ratio-4x3{aspect-ratio:4/3}
.ratio-1x1{aspect-ratio:1/1}
.ratio-3x4{aspect-ratio:3/4}
.figure-cap{font-family:var(--mono);font-size:12.5px;color:var(--muted);letter-spacing:.04em}

/* ---------- 05 头部 ---------- */
.site-header{
  position:fixed;top:var(--gutter);left:0;right:0;z-index:80;
  padding-inline:var(--gutter);pointer-events:none;
  transition:top .3s ease;
}
.site-header.is-scrolled{top:10px}
.header-inner{
  pointer-events:auto;width:100%;max-width:var(--wrap);margin-inline:auto;
  display:flex;align-items:center;gap:clamp(8px,1.6vw,20px);
  padding:9px 12px 9px 14px;
  background:rgba(11,16,24,.84);
  border:2px solid var(--line);border-radius:999px;
  box-shadow:6px 6px 0 rgba(0,240,200,.12);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  transition:padding .3s ease,border-color .3s ease,background .3s ease,box-shadow .3s ease;
}
.site-header.is-scrolled .header-inner{
  padding:5px 12px;background:rgba(5,7,12,.94);
  border-color:rgba(0,240,200,.42);box-shadow:4px 4px 0 rgba(0,240,200,.16);
}
.skip-link{
  position:fixed;top:10px;left:50%;z-index:120;pointer-events:auto;
  transform:translate(-50%,-220%);
  background:var(--cyan);color:#03120F;font-weight:700;font-size:14px;
  padding:10px 18px;border:2px solid #03120F;border-radius:999px;
  transition:transform .2s ease;
}
.skip-link:focus{transform:translate(-50%,0)}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;pointer-events:auto}
.brand-mark{
  width:34px;height:34px;flex:0 0 auto;display:grid;place-items:center;
  border:2px solid var(--cyan);background:rgba(0,240,200,.08);color:var(--cyan);
  font-family:var(--mono);font-size:13px;letter-spacing:.06em;
  clip-path:polygon(0 0,78% 0,100% 22%,100% 100%,22% 100%,0 78%);
}
.brand-text{display:flex;flex-direction:column;line-height:1.08}
.brand-name{font-family:var(--head);font-size:16.5px;font-weight:700;letter-spacing:.02em}
.brand-sub{font-family:var(--mono);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}

.nav{flex:1 1 auto;display:flex;justify-content:center;pointer-events:auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{display:block}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:34px;padding:0 14px;border-radius:999px;
  font-size:14.5px;color:var(--muted);letter-spacing:.02em;
  transition:color .2s ease,background .2s ease,box-shadow .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;background:var(--cyan);
  transform:scaleX(0);transform-origin:left center;transition:transform .25s ease;
}
.nav-link:hover{color:var(--text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  color:#03120F;background:var(--cyan);
  box-shadow:0 0 0 2px rgba(0,240,200,.28),0 0 18px rgba(0,240,200,.35);
}
.nav-link[aria-current="page"]::after{display:none}

.header-utility{display:flex;align-items:center;gap:8px;flex:0 0 auto;margin-left:auto;pointer-events:auto}
.ver-chip{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 12px;
  border:2px solid var(--line);border-radius:999px;background:rgba(16,24,38,.9);
  font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;color:var(--text);
  transition:border-color .2s ease,color .2s ease,box-shadow .2s ease;
}
.ver-chip:hover{border-color:var(--violet);box-shadow:3px 3px 0 rgba(122,92,255,.28)}
.ver-chip-key{color:var(--muted)}
.ver-chip-val{color:var(--cyan)}
.ver-chip.is-copied{border-color:var(--cyan);color:var(--cyan)}
.ver-chip.is-copied::after{content:"已复制";font-family:var(--mono);font-size:11px;color:var(--cyan)}

.filter-toggle{
  display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 14px;
  border:2px solid var(--line);border-radius:999px;background:transparent;
  font-size:13.5px;color:var(--text);
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.filter-toggle:hover{border-color:var(--cyan);color:var(--glow)}
.filter-toggle[aria-expanded="true"]{background:var(--cyan);border-color:var(--cyan);color:#03120F}
.filter-toggle-icon{position:relative;width:12px;height:12px;border:2px solid currentColor;border-radius:2px;flex:0 0 auto}
.filter-toggle-icon::before{content:"";position:absolute;left:-2px;right:-2px;top:3px;height:2px;background:currentColor}

.nav-toggle{
  display:none;width:38px;height:38px;flex:0 0 auto;
  flex-direction:column;align-items:center;justify-content:center;gap:4px;
  border:2px solid var(--line);border-radius:12px;background:rgba(16,24,38,.85);
  transition:border-color .2s ease;
}
.nav-toggle-bar{display:block;width:16px;height:2px;background:var(--text);transition:transform .22s ease,opacity .22s ease,background .22s ease}
.site-header[data-open] .nav-toggle{border-color:var(--cyan)}
.site-header[data-open] .nav-toggle-bar{background:var(--cyan)}
.site-header[data-open] .nav-toggle-bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.filter-panel{
  pointer-events:auto;width:100%;max-width:var(--wrap);margin:10px auto 0;
  display:grid;gap:10px;padding:16px 18px;
  background:rgba(11,16,24,.97);border:2px solid var(--line);border-radius:var(--radius);
  box-shadow:8px 8px 0 rgba(122,92,255,.2);
}
.filter-panel[hidden]{display:none}
.filter-panel-title{margin:0;font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px}
.filter-panel-hint{margin:0;font-size:13px;color:var(--muted)}
.filter-panel-hint[hidden]{display:none}

.scroll-progress{
  position:absolute;left:var(--gutter);right:var(--gutter);bottom:-1px;height:2px;
  background:rgba(36,50,71,.55);border-radius:2px;overflow:hidden;pointer-events:none;
}
.scroll-progress-bar{
  display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--violet) 60%,var(--orange));
}

/* ---------- 06 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:clamp(40px,6vw,90px);
  border-top:2px solid var(--line);
  background:linear-gradient(180deg,rgba(11,16,24,.92),rgba(5,7,12,1));
}
.footer-band{height:6px;background:linear-gradient(90deg,var(--cyan),var(--violet) 45%,var(--orange))}
.footer-inner{
  display:grid;gap:clamp(24px,4vw,60px);
  grid-template-columns:minmax(0,1fr) minmax(0,2.1fr);
  padding-block:clamp(32px,5vw,64px);
}
.footer-brand{display:grid;gap:12px;align-content:start;justify-items:start}
.footer-brand-name{font-family:var(--head);font-size:20px;margin:0;letter-spacing:-0.01em}
.footer-brand-desc{color:var(--muted);font-size:15px;margin:0;max-width:34ch}
.footer-version{font-size:12.5px;letter-spacing:.08em;color:var(--cyan);margin:0}
.footer-cols{display:grid;gap:clamp(18px,3vw,32px);grid-template-columns:repeat(4,minmax(0,1fr))}
.footer-col{display:block}
.footer-col-title{
  font-family:var(--mono);font-size:12px;font-weight:600;letter-spacing:.14em;
  text-transform:uppercase;color:var(--cyan);margin:0 0 12px;
}
.footer-list{display:grid;gap:9px}
.footer-list a{display:inline-block;color:var(--muted);font-size:14.5px;transition:color .18s ease,transform .18s ease}
.footer-list a:hover{color:var(--text);transform:translateX(3px)}
.footer-legal{
  border-top:2px solid var(--line);padding-block:clamp(20px,3vw,32px);
  display:grid;gap:12px;
}
.footer-contact{font-size:14px;color:var(--muted);margin:0;line-height:1.75}
.footer-note{font-size:13px;color:var(--dim);margin:0}
.footer-legal-row{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer-legal-links a{font-size:13.5px;color:var(--text);border-bottom:2px solid var(--line);padding-bottom:2px;transition:color .18s ease,border-color .18s ease}
.footer-legal-links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer-copy{font-size:12.5px;color:var(--muted);margin:0;letter-spacing:.04em}

/* ---------- 07 动效与响应式 ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
[data-reveal].is-in{opacity:1;transform:none}
[data-filterable].is-filtered-out{display:none}
@keyframes navIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

@media (max-width:1179px){
  .btn-cta{display:none}
}
@media (max-width:1079px){
  .nav-toggle{display:inline-flex}
  .nav{
    display:none;position:fixed;left:var(--gutter);right:var(--gutter);top:100px;
    max-height:calc(100vh - 140px);overflow:auto;
    padding:14px;background:rgba(5,7,12,.98);
    border:2px solid var(--line);border-radius:22px;
    box-shadow:10px 10px 0 rgba(0,240,200,.14);
    transition:top .3s ease;
  }
  .site-header.is-scrolled .nav{top:86px}
  .site-header[data-open] .nav{display:flex;animation:navIn .22s ease}
  .nav-list{flex-direction:column;align-items:stretch;gap:6px;width:100%}
  .nav-link{
    height:46px;justify-content:flex-start;padding:0 16px;font-size:16px;color:var(--text);
    border:2px solid transparent;border-radius:12px;
  }
  .nav-link::after{display:none}
  .nav-link:hover{background:rgba(0,240,200,.08);color:var(--cyan)}
  .nav-link[aria-current="page"]{background:rgba(0,240,200,.12);color:var(--cyan);border-color:var(--cyan);box-shadow:none}
}
@media (max-width:960px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .split-8-4,.split-7-5{grid-template-columns:minmax(0,1fr)}
  .footer-inner{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .archive-layout{grid-template-columns:minmax(0,1fr)}
  .archive-rail{
    position:static;display:flex;gap:8px;overflow-x:auto;padding:10px;
    border-radius:var(--radius);-webkit-overflow-scrolling:touch;
  }
  .rail-title{display:none}
  .rail-link{width:auto;white-space:nowrap;border:2px solid var(--line);border-radius:999px;padding:6px 14px}
  .rail-link::before{display:none}
}
@media (max-width:780px){
  .brand-sub{display:none}
  .ver-chip{display:none}
  .filter-toggle span:last-child{display:none}
  .filter-toggle{padding:0 12px}
  h1{font-size:clamp(28px,7vw,40px)}
  .data-band{margin-block:clamp(20px,4vw,40px)}
}
@media (max-width:680px){
  .grid-2,.grid-3,.grid-auto{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .footer-legal-row{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  body::after{display:none}
  [data-reveal]{opacity:1;transform:none}
  .tl-item.is-current .tl-node{animation:none}
}