/* ==========================================================================
   利来赛场 · focus-lilai.com.cn
   共享样式表 /assets/site.css
   深夜球场绿 × 电子信号青 · 粗野主义数据面板
   ========================================================================== */

/* 1. 设计与色彩变量 ------------------------------------------------------ */
:root{
  --ink:#0B1F1A;
  --panel:#13322A;
  --moss:#1E4B40;
  --signal:#2FE0C8;
  --signal-hi:#7CF3E0;
  --coral:#FF6F61;
  --paper:#E8E3D8;
  --stone:#8C9A94;
  --clay:#B9724F;
  --mist:#DCE6DF;
  --deep:#081714;

  --sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --rail:280px;
  --maxw:1440px;
  --gutter:clamp(18px,4vw,56px);
  --gap:clamp(16px,2.4vw,32px);
  --header-h:96px;

  --line:2px solid var(--moss);
  --hard:8px 8px 0 rgba(0,0,0,.45);
  --hard-sm:5px 5px 0 rgba(0,0,0,.4);
  --ease:cubic-bezier(.2,.85,.25,1);
}

/* 2. Reset --------------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--signal);outline-offset:3px}
::selection{background:var(--signal);color:var(--ink)}

/* 3. 中文排版基座 --------------------------------------------------------- */
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    repeating-linear-gradient(180deg,rgba(232,227,216,.026) 0 1px,rgba(0,0,0,0) 1px 5px),
    radial-gradient(120% 70% at 80% -12%,rgba(47,224,200,.11),rgba(0,0,0,0) 62%),
    radial-gradient(90% 60% at -5% 104%,rgba(185,114,79,.08),rgba(0,0,0,0) 70%);
  background-attachment:fixed;
  color:var(--paper);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
h1,h2,h3,h4{line-height:1.18;letter-spacing:-.012em;font-weight:800}
h1{font-size:clamp(34px,5.4vw,64px)}
h2{font-size:clamp(26px,3.6vw,42px)}
h3{font-size:clamp(20px,2.4vw,26px)}
p{max-width:34em}
a{color:var(--signal);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--signal-hi)}
strong{font-weight:800;color:var(--paper)}
.num,.stat__value,.chapter__num,.index-list__num,.tag,.breadcrumb,.footer__k{font-family:var(--mono);font-variant-numeric:tabular-nums}

#main-content{display:block;padding-top:var(--header-h)}

/* 4. 布局骨架 ------------------------------------------------------------ */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(40px,7vw,88px);position:relative}
.section--tight{padding-block:clamp(24px,4vw,48px)}
.section__head{max-width:60ch;margin-bottom:clamp(20px,3vw,40px)}
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--signal);margin-bottom:14px;
}
.kicker::before{content:"";width:22px;height:2px;background:var(--signal)}
.section__title{font-weight:800}
.section__lead{color:var(--stone);margin-top:12px;max-width:40ch}

.shell{
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  gap:clamp(20px,3vw,48px);
  width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter);
  align-items:start;
}
.rail{
  position:sticky;top:calc(var(--header-h) + 18px);
  align-self:start;max-height:calc(100vh - var(--header-h) - 40px);
  overflow-y:auto;padding-right:6px;
  border-right:2px solid var(--moss);
}
.rail__title{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;
  color:var(--stone);margin-bottom:12px;
}
.rail__group{margin-bottom:26px}
.shell__main{min-width:0}

.rule{height:2px;background:var(--moss);border:0;margin-block:clamp(28px,5vw,56px)}
.rule--signal{background:linear-gradient(90deg,var(--signal),rgba(47,224,200,0))}
.stack>*+*{margin-top:var(--gap)}
.chip-row{display:flex;flex-wrap:wrap;gap:8px}

/* 5. 索引与筛选 ---------------------------------------------------------- */
.index-list{border-top:2px solid var(--moss)}
.index-list__item{border-bottom:1px solid var(--moss)}
.index-list__link{
  display:flex;align-items:baseline;gap:12px;
  padding:11px 6px;color:var(--stone);font-size:15px;line-height:1.5;
  box-shadow:inset 0 0 0 var(--signal);
  transition:color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease),padding .18s var(--ease);
}
.index-list__link:hover{color:var(--paper);background:rgba(30,75,64,.5)}
.index-list__num{font-size:12px;color:var(--moss);flex:0 0 auto;min-width:2em}
.index-list__link[data-active]{color:var(--signal-hi);background:rgba(47,224,200,.07);box-shadow:inset 3px 0 0 var(--signal);padding-left:12px}
.index-list__link[data-active] .index-list__num{color:var(--signal)}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border:2px solid var(--moss);background:transparent;
  color:var(--paper);font-size:14px;font-weight:600;line-height:1.3;
  cursor:pointer;text-decoration:none;
  transition:border-color .18s var(--ease),color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.chip:hover{border-color:var(--signal);color:var(--signal-hi)}
.chip[aria-pressed="true"]{border-color:var(--signal);background:rgba(47,224,200,.12);color:var(--signal-hi);box-shadow:inset 3px 0 0 var(--signal)}

/* 6. 数据卡片与数字 ------------------------------------------------------ */
.card{
  position:relative;
  background:var(--panel);border:2px solid var(--moss);
  padding:clamp(16px,2vw,24px);
  box-shadow:var(--hard);
}
.card--flat{box-shadow:none;background:var(--moss)}
.card--drop-1{margin-top:10px}
.card--drop-2{margin-top:20px}
.card--drop-3{margin-top:28px}
.card__label{
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--stone);display:block;margin-bottom:10px;
}
.card__value{font-family:var(--mono);font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--signal-hi);line-height:1.2}
.card__desc{color:var(--stone);font-size:15px;margin-top:8px;line-height:1.7}
.card-grid{display:grid;gap:var(--gap);grid-template-columns:repeat(auto-fit,minmax(220px,1fr));align-items:start}

.panel{background:var(--panel);border:2px solid var(--moss);padding:clamp(18px,2.4vw,32px)}

.stats-band{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));
  border-top:2px solid var(--moss);border-bottom:2px solid var(--moss);
  background:var(--panel);
}
.stats-band__item{padding:clamp(18px,2.4vw,30px);border-right:1px solid var(--moss)}
.stats-band__item:last-child{border-right:0}
.stat__value{font-size:clamp(28px,4vw,46px);font-weight:700;color:var(--signal-hi);line-height:1;display:block}
.stat__unit{font-family:var(--mono);font-size:12px;letter-spacing:.16em;color:var(--stone);display:block;margin-top:10px;text-transform:uppercase}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border:1px solid var(--moss);
  font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--stone);
}
.tag--clay{border-color:var(--clay);color:var(--clay)}
.tag--coral{border-color:var(--coral);color:var(--coral)}
.tag--signal{border-color:var(--signal);color:var(--signal)}

/* 7. 章节编号 ------------------------------------------------------------ */
.chapter{position:relative;padding-block:clamp(32px,5vw,64px)}
.chapter__num{
  display:block;font-size:clamp(40px,7vw,72px);font-weight:700;line-height:.9;
  color:var(--moss);letter-spacing:-.03em;margin-bottom:12px;
  transition:color .24s var(--ease);
}
.chapter__title{font-size:clamp(24px,3.2vw,36px);font-weight:800}
.chapter[data-active] .chapter__num{color:var(--signal)}
[data-chapter]{scroll-margin-top:calc(var(--header-h) + 20px)}

/* 8. 按钮 ---------------------------------------------------------------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:13px 22px;border:2px solid var(--signal);background:var(--signal);color:var(--ink);
  font-size:15px;font-weight:800;letter-spacing:.02em;line-height:1.2;text-decoration:none;cursor:pointer;
  box-shadow:var(--hard-sm);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:8px 8px 0 rgba(0,0,0,.45);background:var(--signal-hi);border-color:var(--signal-hi);color:var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 rgba(0,0,0,.4)}
.btn--ghost{background:transparent;color:var(--signal);border-color:var(--moss);box-shadow:none}
.btn--ghost:hover{background:rgba(47,224,200,.08);border-color:var(--signal);color:var(--signal-hi);transform:none;box-shadow:var(--hard-sm)}
.btn--coral{background:transparent;color:var(--coral);border-color:var(--coral)}
.btn--coral:hover{background:rgba(255,111,97,.12);color:var(--coral);border-color:var(--coral)}
.btn-row{display:flex;flex-wrap:wrap;gap:14px;align-items:center}

/* 9. 面包屑与正文容器 ---------------------------------------------------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--stone);
  padding-top:calc(var(--header-h) + 18px);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--moss)}
.breadcrumb a{color:var(--stone)}
.breadcrumb a:hover{color:var(--signal)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

.prose{max-width:72ch;font-size:17px;line-height:1.85}
.prose>*+*{margin-top:1.1em}
.prose h2{font-size:clamp(22px,2.6vw,30px);margin-top:1.8em}
.prose h3{font-size:clamp(18px,2vw,22px);margin-top:1.5em}
.prose ul{list-style:square;padding-left:1.3em}
.prose ol{list-style:decimal;padding-left:1.4em}
.prose li+li{margin-top:.4em}
.prose a{text-decoration:underline;text-underline-offset:3px}
.prose--light{
  background:var(--mist);color:var(--ink);
  border:2px solid var(--moss);padding:clamp(22px,4vw,56px);
  max-width:none;box-shadow:var(--hard);
}
.prose--light h2,.prose--light h3,.prose--light strong{color:#0A241D}
.prose--light a{color:#0F6B5C}
.prose--light .kicker{color:#0F6B5C}
.prose--light .kicker::before{background:#0F6B5C}

/* 10. 图片容器基础规则 --------------------------------------------------- */
.media{
  position:relative;display:block;width:100%;
  background:var(--panel);border:2px solid var(--moss);
  box-shadow:var(--hard);overflow:hidden;
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(180deg,rgba(11,31,26,.5) 0 1px,rgba(0,0,0,0) 1px 4px),
    linear-gradient(180deg,rgba(47,224,200,.10),rgba(11,31,26,.34) 70%);
  mix-blend-mode:multiply;
}
.media__img{width:100%;height:100%;object-fit:cover;filter:saturate(.86) contrast(1.06) brightness(.92)}
.media__caption{
  font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--stone);
  margin-top:10px;line-height:1.6;
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--21x9{aspect-ratio:21/9}
.media-grid{display:grid;gap:var(--gap);grid-template-columns:repeat(auto-fit,minmax(240px,1fr));align-items:start}

/* 11. 滚动显现 ----------------------------------------------------------- */
[data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .32s var(--ease),transform .32s var(--ease)}
[data-reveal][data-shown]{opacity:1;transform:none}

/* 12. 跳过链接 ----------------------------------------------------------- */
.skip-link{
  position:fixed;left:14px;top:-90px;z-index:200;
  padding:12px 20px;background:var(--signal);color:var(--ink);
  font-weight:800;font-size:14px;border:2px solid var(--ink);box-shadow:var(--hard-sm);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px;color:var(--ink)}

/* 13. 页头 --------------------------------------------------------------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:90;
  display:flex;flex-direction:column;
  background:linear-gradient(180deg,rgba(11,31,26,.94) 0%,rgba(11,31,26,.62) 62%,rgba(11,31,26,0) 100%);
  border-bottom:2px solid rgba(30,75,64,0);
  transition:background-color .24s var(--ease),border-color .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header[data-stuck]{
  background:var(--panel);
  border-bottom-color:var(--moss);
  box-shadow:0 6px 0 rgba(0,0,0,.35);
}
.site-header[data-open]{
  background:var(--panel);
  border-bottom-color:var(--moss);
}

.statusbar{
  display:flex;align-items:center;gap:10px;flex-wrap:nowrap;overflow:hidden;
  padding:5px var(--gutter);
  border-bottom:1px solid rgba(30,75,64,.7);
  background:rgba(8,23,20,.72);
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--stone);white-space:nowrap;
}
.statusbar__pulse{
  width:8px;height:8px;flex:0 0 8px;background:var(--coral);
  animation:pulse 2.6s var(--ease) infinite;
}
.statusbar__label{color:var(--stone)}
.statusbar__value{color:var(--signal);font-weight:700}
.statusbar__spacer{flex:1 1 auto}
.statusbar__group{display:inline-flex;align-items:center;gap:8px}
@keyframes pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 0 rgba(255,111,97,.55)}
  50%{opacity:.5;box-shadow:0 0 0 5px rgba(255,111,97,0)}
}

.header__bar{display:flex;align-items:center;gap:clamp(12px,2vw,28px);min-height:62px;padding-block:8px}

.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;color:var(--paper);text-decoration:none}
.brand:hover{color:var(--paper)}
.brand__mark{position:relative;display:block;width:22px;height:22px;flex:0 0 22px;background:var(--signal);box-shadow:4px 4px 0 rgba(47,224,200,.2)}
.brand__mark::after{content:"";position:absolute;inset:7px;background:var(--ink)}
.brand__name{font-size:20px;font-weight:900;letter-spacing:.04em;line-height:1}
.brand__sub{
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--stone);
  border-left:2px solid var(--moss);padding-left:10px;line-height:1;
}
.brand--footer .brand__name{font-size:23px}

.nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__item{display:block}
.nav__link{
  position:relative;display:block;padding:10px 14px 10px 18px;
  color:var(--paper);font-size:15px;font-weight:600;line-height:1.3;
  border:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav__link::before{
  content:"›";position:absolute;left:4px;top:50%;
  transform:translate(-6px,-50%);opacity:0;color:var(--signal);font-weight:800;
  transition:opacity .18s var(--ease),transform .18s var(--ease);
}
.nav__link:hover,.nav__link:focus-visible{color:var(--signal-hi);background:rgba(30,75,64,.6)}
.nav__link:hover::before,.nav__link:focus-visible::before{opacity:1;transform:translate(0,-50%)}
.nav__link[aria-current="page"]{color:var(--ink);background:var(--signal);border-color:var(--signal)}
.nav__link[aria-current="page"]::before{opacity:0}
.nav__aside{display:none}

.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:10px 12px;border:2px solid var(--moss);color:var(--paper);
  cursor:pointer;transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--signal);color:var(--signal-hi)}
.nav-toggle[data-open]{border-color:var(--signal);color:var(--signal-hi)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:20px}
.nav-toggle__bar{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[data-open] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle__text{font-family:var(--mono);font-size:12px;letter-spacing:.14em}

.header__progress{height:2px;background:rgba(30,75,64,.7);overflow:hidden}
.header__progress-bar{
  display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--moss),var(--signal) 55%,var(--signal-hi));
}

/* 14. 页脚 --------------------------------------------------------------- */
.site-footer{
  margin-top:clamp(48px,8vw,104px);
  background:linear-gradient(180deg,var(--ink) 0%,var(--deep) 100%);
  border-top:3px solid var(--moss);
}
.footer__strip{border-bottom:2px solid var(--moss);background:rgba(19,50,42,.7)}
.footer__strip-inner{display:flex;flex-wrap:wrap;gap:10px 28px;padding-block:12px}
.footer__strip-item{
  font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--stone);
  display:inline-flex;align-items:center;gap:8px;
}
.footer__strip-item::before{content:"";width:6px;height:6px;background:var(--moss)}
.footer__strip-item--alert{color:var(--coral)}
.footer__strip-item--alert::before{background:var(--coral)}

.footer__grid{
  display:grid;gap:clamp(24px,4vw,56px);
  grid-template-columns:1.4fr 1fr 1fr 1.5fr;
  padding-block:clamp(36px,6vw,72px);
}
.footer__col{min-width:0}
.footer__col--brand{max-width:36ch}
.footer__line{color:var(--paper);margin-top:18px;font-size:15px;line-height:1.8;max-width:26em}
.footer__note{color:var(--stone);font-size:13px;margin-top:10px;line-height:1.7;max-width:30em}
.footer__title{
  font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.2em;text-transform:uppercase;
  color:var(--signal);margin-bottom:16px;
}
.footer__list{display:grid;gap:10px}
.footer__list a{color:var(--paper);font-size:15px;display:inline-block}
.footer__list a:hover{color:var(--signal-hi);box-shadow:inset 0 -2px 0 var(--signal)}
.footer__list--plain{color:var(--paper)}
.footer__list--plain li{display:flex;gap:12px;font-size:14px;line-height:1.7}
.footer__k{
  flex:0 0 3.2em;font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--stone);padding-top:3px;
}
.footer__v{flex:1 1 auto;word-break:break-word}

.footer__bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;
  padding-block:18px;border-top:2px solid var(--moss);
}
.footer__legal{font-size:13px;color:var(--stone);max-width:none}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:20px}
.footer__legal-links a{font-size:13px;color:var(--stone);text-decoration:underline;text-underline-offset:3px}
.footer__legal-links a:hover{color:var(--signal)}
.footer__icp{font-family:var(--mono);font-size:12px;letter-spacing:.06em;color:var(--stone);margin-left:auto;max-width:none}

/* 15. 返回顶部 ----------------------------------------------------------- */
.to-top{
  position:fixed;right:clamp(14px,3vw,32px);bottom:clamp(14px,3vw,32px);z-index:70;
  display:inline-flex;align-items:center;gap:9px;
  padding:11px 15px;background:var(--panel);border:2px solid var(--moss);color:var(--paper);
  font-family:var(--mono);font-size:12px;letter-spacing:.14em;cursor:pointer;box-shadow:var(--hard-sm);
  opacity:0;transform:translateY(14px);pointer-events:none;
  transition:opacity .24s var(--ease),transform .24s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.to-top[data-visible]{opacity:1;transform:none;pointer-events:auto}
.to-top:hover{border-color:var(--signal);color:var(--signal-hi)}
.to-top__line{display:block;width:22px;height:2px;background:var(--signal);transform-origin:left center;transition:transform .22s var(--ease)}
.to-top:hover .to-top__line{transform:scaleX(.4)}

/* 16. 响应式 ------------------------------------------------------------- */
@media (max-width:1180px){
  :root{--rail:240px}
  .footer__grid{grid-template-columns:1fr 1fr}
}

@media (max-width:1024px){
  .shell{grid-template-columns:minmax(0,1fr)}
  .rail{
    position:static;max-height:none;overflow:visible;
    border-right:0;border-bottom:2px solid var(--moss);
    padding-right:0;padding-bottom:18px;margin-bottom:8px;
  }
  .rail .index-list{display:flex;overflow-x:auto;gap:0;border-top:0;border-bottom:0}
  .rail .index-list__item{border-bottom:0;border-left:1px solid var(--moss);flex:0 0 auto}
  .rail .index-list__link{padding:10px 16px;white-space:nowrap}
  .rail .index-list__link[data-active]{box-shadow:inset 0 -3px 0 var(--signal)}
  .chip-row{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch}
  .chip{flex:0 0 auto}
}

@media (max-width:900px){
  :root{--header-h:88px}
  .statusbar{font-size:10px;letter-spacing:.12em}
  .header__bar{min-height:58px}
  .brand__sub{display:none}

  .nav{
    position:fixed;top:0;left:0;bottom:0;z-index:88;
    width:min(340px,86vw);
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    margin:0;padding:calc(var(--header-h) + 16px) 0 40px;
    background:var(--panel);border-right:3px solid var(--moss);
    box-shadow:16px 0 0 rgba(0,0,0,.4);
    transform:translateX(-104%);
    transition:transform .28s var(--ease);
    overflow-y:auto;overscroll-behavior:contain;
  }
  .nav[data-open]{transform:translateX(0)}
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__item{border-bottom:1px solid var(--moss)}
  .nav__link{padding:15px var(--gutter) 15px calc(var(--gutter) + 16px);font-size:17px;border:0}
  .nav__link::before{left:calc(var(--gutter) - 2px)}
  .nav__link:hover,.nav__link:focus-visible{background:rgba(30,75,64,.7)}
  .nav__link[aria-current="page"]{
    background:rgba(47,224,200,.12);color:var(--signal-hi);
    box-shadow:inset 4px 0 0 var(--signal);border:0;
  }
  .nav__aside{display:block;padding:26px var(--gutter) 0}
  .nav__aside-title{
    font-family:var(--mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--stone);margin-bottom:12px;
  }
  .nav__aside-link{
    display:inline-flex;align-items:center;gap:8px;padding:11px 16px;
    border:2px solid var(--signal);color:var(--signal);font-weight:700;font-size:15px;
  }
  .nav__aside-link:hover{background:rgba(47,224,200,.12);color:var(--signal-hi)}

  .nav-toggle{display:inline-flex;position:relative;z-index:92}
}

@media (max-width:640px){
  :root{--header-h:86px}
  body{font-size:16px;line-height:1.8}
  .statusbar__group{display:none}
  .footer__grid{grid-template-columns:1fr;gap:32px}
  .footer__icp{margin-left:0}
  .footer__bar{flex-direction:column;align-items:flex-start}
  .stats-band__item{border-right:0;border-bottom:1px solid var(--moss)}
  .stats-band__item:last-child{border-bottom:0}
  .to-top{right:12px;bottom:12px}
}

/* 17. 动效与可访问性偏好 ------------------------------------------------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
  .statusbar__pulse{opacity:1}
}
@media print{
  .site-header,.to-top,.nav-toggle{display:none}
  body{background:#fff;color:#111}
}