/* =========================================================
   /assets/site.css — 皇冠现金官网 共享样式
   目录：01 reset / 02 变量 / 03 基础排版 / 04 布局容器
        05 页头 / 06 侧栏第二栏 / 07 页脚 / 08 按钮
        09 面包屑 / 10 通用组件 / 11 图片容器 / 12 动效 / 13 响应式
   ========================================================= */

/* ---------- 01 reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd,table,th,td{margin:0;padding:0}
ul,ol{list-style:none}
img,picture,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--gold-300);outline-offset:3px}
::selection{background:rgba(201,162,39,.35);color:#fff}

/* ---------- 02 变量 ---------- */
:root{
  --ink-950:#0D0E11;
  --ink-800:#1A1C21;
  --gold-500:#C9A227;
  --gold-300:#E8C766;
  --teal-600:#1F6F78;
  --teal-ink:#5FA9B1;
  --coral-500:#E2725B;
  --clay-600:#A85B3C;
  --moss-500:#6E7A5A;
  --paper-100:#F4F0E6;
  --slate-400:#9AA0A8;
  --line-700:#2E323A;

  --bg:var(--ink-950);
  --surface:var(--ink-800);
  --fg:var(--paper-100);
  --muted:var(--slate-400);
  --line:var(--line-700);
  --accent:var(--gold-500);
  --accent-soft:var(--gold-300);
  --action:var(--coral-500);

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",Georgia,serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,monospace;

  --wrap:1240px;
  --gut:clamp(16px,4vw,40px);
  --radius:2px;
  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:220ms;
}

/* ---------- 03 基础排版 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-950);
  background-image:
    linear-gradient(90deg,rgba(46,50,58,.30) 1px,transparent 1px),
    linear-gradient(180deg,rgba(46,50,58,.30) 1px,transparent 1px);
  background-size:64px 64px;
  background-position:center top;
  color:var(--fg);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,.serif{
  font-family:var(--font-serif);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.24;
  color:var(--paper-100);
}
h1{font-size:clamp(38px,7vw,76px);font-weight:900}
h2{font-size:clamp(26px,4vw,38px)}
h3{font-size:clamp(20px,2.4vw,26px)}
h4{font-size:18px}
p{font-size:17px}
strong{font-weight:700;color:var(--paper-100)}
small,.small{font-size:14px;color:var(--muted)}
#main-content{display:block;scroll-margin-top:104px}

/* ---------- 04 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
.wrap--narrow{max-width:880px}
.section{padding-block:clamp(46px,7vw,92px)}
.section--tight{padding-block:clamp(26px,4vw,52px)}
.section--panel{background:var(--surface);border-block:1px solid var(--line)}
.section--paper{background:var(--paper-100);color:#14161A}
.section--paper h1,.section--paper h2,.section--paper h3,.section--paper h4{color:#0D0E11}
.section--paper .section-kicker,.section--paper .section-sub{color:#4A4F57}
.section--paper .prose a{color:var(--teal-600);border-bottom:1px solid rgba(31,111,120,.45)}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:clamp(22px,3vw,38px)}
.section-kicker{font-family:var(--font-serif);font-size:13px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold-500)}
.section-title{font-size:clamp(24px,3.4vw,36px)}
.section-sub{font-size:15px;color:var(--muted);max-width:62ch}
.eyebrow{font-size:13px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold-500);font-weight:700}
.lede{font-size:clamp(17px,2vw,20px);line-height:1.85;color:#DCD6C8;max-width:68ch}
.prose{max-width:72ch;font-size:17px;line-height:1.9}
.prose p+p{margin-top:1em}
.prose a{border-bottom:1px solid rgba(201,162,39,.5);color:var(--gold-300)}
.prose a:hover{border-bottom-color:var(--gold-300)}
.prose h2{margin-top:1.6em;margin-bottom:.5em}
.prose h3{margin-top:1.3em;margin-bottom:.4em}
.stack>*+*{margin-top:16px}
.grid{display:grid;gap:clamp(14px,2vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}
.split{display:grid;gap:clamp(20px,4vw,56px);grid-template-columns:minmax(0,1.35fr) minmax(0,1fr)}
.split--rev{grid-template-columns:minmax(0,1fr) minmax(0,1.35fr)}
.split--even{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.rule-gold{height:1px;border:0;background:linear-gradient(90deg,var(--gold-500),rgba(201,162,39,0))}
.grid-texture{background-image:linear-gradient(90deg,rgba(46,50,58,.55) 1px,transparent 1px),linear-gradient(180deg,rgba(46,50,58,.55) 1px,transparent 1px);background-size:28px 28px}
.plate{background-color:var(--ink-800);background-image:linear-gradient(140deg,rgba(201,162,39,.14),rgba(31,111,120,.10) 46%,transparent 72%)}
.index-num{display:block;font-family:var(--font-serif);font-weight:900;font-size:clamp(34px,6vw,68px);line-height:1;color:var(--gold-500);letter-spacing:.02em}
.index-num--teal{color:var(--teal-ink)}
.panel{position:relative;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:clamp(18px,3vw,30px)}
.panel--gold::before{content:"";position:absolute;left:0;top:0;height:2px;width:64px;background:var(--gold-500)}
.panel--flat{background:transparent;border-style:dashed}
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;font-size:12px;letter-spacing:.1em;border:1px solid var(--line);border-radius:var(--radius);color:var(--muted)}
.tag--live{color:var(--paper-100);border-color:var(--moss-500);background:rgba(110,122,90,.18)}
.tag--new{color:#14161A;background:var(--gold-500);border-color:var(--gold-500);font-weight:700}
.tag--clay{border-color:var(--clay-600);background:rgba(168,91,60,.18);color:#E9C4B2}

/* ---------- 05 页头 ---------- */
.skip-link{
  position:absolute;left:14px;top:-72px;z-index:120;
  padding:10px 18px;background:var(--gold-500);color:var(--ink-950);
  font-size:14px;font-weight:700;letter-spacing:.06em;border-radius:var(--radius);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,rgba(13,14,17,.99),rgba(13,14,17,.93));
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(90deg,rgba(46,50,58,.5) 1px,transparent 1px);
  background-size:26px 100%;opacity:.5;
}
.header-inner{
  position:relative;
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:clamp(14px,3vw,48px);
  padding-block:14px;
}
.brand-block{display:flex;align-items:center;gap:18px;min-width:0}
.brand-mark{display:inline-flex;align-items:center;gap:13px;min-width:0}
.brand-glyph{
  flex:0 0 auto;display:grid;place-items:center;
  width:46px;height:46px;
  font-family:var(--font-serif);font-size:22px;font-weight:900;color:var(--gold-300);
  background:var(--ink-800);border:1px solid var(--gold-500);border-radius:var(--radius);
  box-shadow:inset 0 0 0 1px rgba(232,199,102,.16);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.brand-mark:hover .brand-glyph{background:var(--gold-500);color:var(--ink-950)}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-family:var(--font-serif);font-size:19px;font-weight:800;letter-spacing:.01em;color:var(--paper-100);white-space:nowrap}
.brand-line{font-size:12px;letter-spacing:.16em;color:var(--gold-500);white-space:nowrap}
.header-entry{flex:0 0 auto;white-space:nowrap}
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 14px;border:1px solid var(--line);border-radius:var(--radius);
  color:var(--paper-100);font-size:14px;letter-spacing:.08em;
  background:rgba(26,28,33,.9);
}
.nav-toggle:hover{border-color:var(--gold-500);color:var(--gold-300)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle-bars span{display:block;height:1px;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.site-header[data-open] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars span:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
.site-nav{display:flex;flex-direction:column;align-items:flex-end;gap:7px;min-width:0}
.nav-caption{display:flex;align-items:center;gap:8px;font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--slate-400)}
.nav-caption-num{font-family:var(--font-serif);font-size:12px;letter-spacing:.1em;color:var(--gold-500)}
.nav-list{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:2px 4px}
.nav-link{
  display:inline-flex;align-items:baseline;gap:7px;
  padding:7px 11px;border:1px solid transparent;border-radius:var(--radius);
  font-size:14px;line-height:1.4;color:var(--paper-100);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-num{font-family:var(--font-serif);font-size:12px;letter-spacing:.08em;color:var(--teal-ink)}
.nav-label{white-space:nowrap}
.nav-link:hover{transform:translateY(-2px);border-color:var(--line);background:rgba(201,162,39,.07);color:var(--gold-300)}
.nav-link:hover .nav-num{color:var(--gold-300)}
.nav-link[aria-current="page"]{color:var(--gold-300);border-color:rgba(201,162,39,.5);background:rgba(201,162,39,.09)}
.nav-link[aria-current="page"] .nav-num{color:var(--gold-500)}
.nav-foot{font-size:12px;letter-spacing:.04em;color:var(--slate-400)}
.scroll-progress{height:2px;background:rgba(201,162,39,.12)}
.scroll-progress-bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--teal-600),var(--gold-500) 55%,var(--coral-500));transition:width .12s linear}

/* ---------- 06 侧栏第二栏 ---------- */
.side-rail{
  position:fixed;right:0;top:50%;transform:translateY(-50%);
  z-index:55;width:46px;padding:16px 8px;
  display:flex;flex-direction:column;align-items:center;gap:12px;
  background:var(--ink-800);border:1px solid var(--line);border-right:0;
  border-radius:var(--radius) 0 0 var(--radius);
  box-shadow:-8px 0 24px rgba(0,0,0,.35);
  overflow:hidden;
  transition:width .3s var(--ease),padding .3s var(--ease),border-color .3s var(--ease);
}
.side-rail:hover,.side-rail:focus-within{
  width:232px;padding:18px;align-items:stretch;
  border-color:rgba(201,162,39,.55);
}
.side-rail-num{font-family:var(--font-serif);font-size:15px;font-weight:900;color:var(--gold-500);letter-spacing:.08em}
.side-rail-title{
  writing-mode:vertical-rl;font-family:var(--font-serif);
  font-size:13px;letter-spacing:.3em;color:var(--paper-100);
}
.side-rail:hover .side-rail-title,.side-rail:focus-within .side-rail-title{display:none}
.side-rail-body{display:none}
.side-rail:hover .side-rail-body,.side-rail:focus-within .side-rail-body{display:grid;gap:10px}
.side-rail-note{font-size:12px;line-height:1.7;color:var(--slate-400)}
.side-rail-link{
  display:inline-block;padding:9px 14px;font-size:13px;font-weight:700;letter-spacing:.06em;
  background:var(--coral-500);color:#14161A;border-radius:var(--radius);
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
}
.side-rail-link:hover{transform:translateY(-2px);background:#EE8873}
.copy-btn{
  display:inline-block;padding:8px 12px;font-size:12px;letter-spacing:.06em;
  border:1px solid var(--line);border-radius:var(--radius);color:var(--paper-100);
  background:rgba(13,14,17,.6);
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.copy-btn:hover{border-color:var(--gold-500);color:var(--gold-300);transform:translateY(-2px)}
.copy-toast{
  position:fixed;left:50%;bottom:28px;transform:translateX(-50%) translateY(10px);
  z-index:140;padding:10px 20px;font-size:13px;letter-spacing:.05em;
  background:var(--ink-800);border:1px solid var(--gold-500);color:var(--paper-100);
  border-radius:var(--radius);opacity:0;
  transition:opacity .2s var(--ease),transform .2s var(--ease);
}
.copy-toast[hidden]{display:none}
.copy-toast.is-on{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- 07 页脚 ---------- */
.site-footer{
  border-top:1px solid var(--line);
  background-color:var(--ink-800);
  background-image:
    linear-gradient(180deg,rgba(13,14,17,.92),rgba(13,14,17,.72)),
    linear-gradient(90deg,rgba(46,50,58,.6) 1px,transparent 1px);
  background-size:100% 100%,30px 100%;
  color:var(--paper-100);
}
.footer-inner{padding-block:clamp(34px,5vw,64px) 24px}
.footer-top{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.6fr);gap:clamp(24px,4vw,60px)}
.footer-brand{display:flex;flex-direction:column;gap:10px;align-items:flex-start;border-left:2px solid var(--gold-500);padding-left:18px}
.footer-eyebrow{font-size:12px;letter-spacing:.2em;color:var(--gold-500)}
.footer-title{font-family:var(--font-serif);font-size:clamp(24px,3vw,32px);font-weight:900;line-height:1.2;color:var(--paper-100)}
.footer-brand-note{font-size:14px;color:var(--slate-400)}
.footer-cta{margin-top:8px}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:clamp(20px,3vw,36px)}
.footer-col-title{font-family:var(--font-serif);font-size:14px;letter-spacing:.14em;color:var(--gold-300);padding-bottom:10px;margin-bottom:12px;border-bottom:1px solid var(--line)}
.footer-links{display:grid;gap:8px}
.footer-link{display:inline-block;font-size:14px;color:#C9C6BD;transition:color var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);border-bottom:1px solid transparent}
.footer-link:hover{color:var(--gold-300);transform:translateY(-2px);border-bottom-color:var(--gold-500)}
.footer-link[aria-current="page"]{color:var(--gold-300)}
.footer-link--inline{font-size:13px;color:var(--slate-400)}
.footer-contact{margin-top:clamp(24px,4vw,44px);padding-top:20px;border-top:1px solid var(--line);display:grid;gap:10px}
.footer-contact-line{font-size:14px;color:#C9C6BD;word-break:break-word}
.footer-contact-key{font-family:var(--font-serif);color:var(--gold-500);margin-right:6px}
.footer-dot{color:var(--line);margin:0 6px}
.footer-copy{display:flex;flex-wrap:wrap;gap:10px}
.footer-note{font-size:13px;line-height:1.75;color:var(--slate-400);max-width:76ch}
.footer-bottom{
  margin-top:22px;padding-top:16px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;gap:10px 20px;align-items:center;justify-content:space-between;
}
.footer-legal{font-size:13px;color:var(--slate-400)}
.footer-icp{font-size:13px;letter-spacing:.06em;color:var(--slate-400)}

/* ---------- 08 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;border:1px solid var(--line);border-radius:var(--radius);
  font-size:14px;font-weight:600;letter-spacing:.05em;color:var(--paper-100);
  background:transparent;cursor:pointer;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--coral-500);border-color:var(--coral-500);color:#14161A;font-weight:700}
.btn-primary:hover{background:#EE8873;border-color:#EE8873}
.btn-gold{background:var(--gold-500);border-color:var(--gold-500);color:var(--ink-950);font-weight:700}
.btn-gold:hover{background:var(--gold-300);border-color:var(--gold-300)}
.btn-ghost:hover{border-color:var(--gold-500);color:var(--gold-300);background:rgba(201,162,39,.08)}
.btn-block{width:100%}

/* ---------- 09 面包屑 ---------- */
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;letter-spacing:.05em;color:var(--slate-400)}
.breadcrumbs a{color:var(--slate-400);border-bottom:1px solid transparent}
.breadcrumbs a:hover{color:var(--gold-300);border-bottom-color:var(--gold-500)}
.breadcrumbs [aria-current="page"]{color:var(--gold-300)}
.crumb-sep{color:var(--line)}

/* ---------- 10 通用组件 ---------- */
.steps{display:grid;gap:clamp(12px,2vw,20px);grid-template-columns:repeat(auto-fit,minmax(210px,1fr));counter-reset:step}
.step{position:relative;border:1px solid var(--line);border-radius:var(--radius);padding:20px;background:var(--surface)}
.step-num{display:block;font-family:var(--font-serif);font-size:38px;font-weight:900;line-height:1;color:var(--gold-500)}
.step-title{margin-top:8px;font-family:var(--font-serif);font-size:18px;color:var(--paper-100)}
.step-text{font-size:14px;color:var(--muted);line-height:1.75}
.index-list{display:grid;gap:0;border-top:1px solid var(--line)}
.index-row{display:grid;grid-template-columns:auto minmax(0,1fr) auto;gap:16px;align-items:center;padding:14px 4px;border-bottom:1px solid var(--line);transition:background var(--dur) var(--ease)}
.index-row:hover{background:rgba(201,162,39,.06)}
.index-row-num{font-family:var(--font-serif);font-size:20px;color:var(--teal-ink)}
.index-row-title{font-size:16px;color:var(--paper-100)}
.index-row-go{font-size:13px;color:var(--gold-500)}
.facts{display:grid;gap:14px;grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}
.fact{border-top:2px solid var(--gold-500);padding-top:12px}
.fact-num{font-family:var(--font-serif);font-size:30px;font-weight:900;line-height:1.1;color:var(--paper-100)}
.fact-label{font-size:13px;color:var(--muted);letter-spacing:.04em}
.accordion{border:1px solid var(--line);border-radius:var(--radius);background:var(--surface)}
.accordion+.accordion{margin-top:10px}
.accordion summary{cursor:pointer;padding:14px 18px;font-family:var(--font-serif);font-size:16px;color:var(--paper-100);list-style:none;display:flex;justify-content:space-between;gap:14px;align-items:center}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:"+";color:var(--gold-500);font-family:var(--font-sans)}
.accordion[open] summary::after{content:"−"}
.accordion-body{padding:0 18px 18px;font-size:15px;color:#CFCBBF;line-height:1.85}
.section--paper .index-list{border-top-color:rgba(13,14,17,.16)}
.section--paper .index-row{border-bottom-color:rgba(13,14,17,.16)}
.section--paper .index-row-title{color:#14161A}
.section--paper .panel{background:#fff;border-color:rgba(13,14,17,.14)}

/* ---------- 11 图片容器 ---------- */
.media{
  position:relative;overflow:hidden;width:100%;
  background-color:var(--ink-800);border:1px solid var(--line);border-radius:var(--radius);
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(135deg,rgba(201,162,39,.14),transparent 44%,rgba(31,111,120,.18));
}
.media img,.media svg,.media video{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:4/5}
.media--cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 30px),calc(100% - 30px) 100%,0 100%)}
.media--cut::after{background:linear-gradient(160deg,rgba(226,114,91,.16),transparent 50%,rgba(201,162,39,.16))}
.media-caption{margin-top:8px;font-size:13px;letter-spacing:.02em;color:var(--slate-400)}
.media-grid{display:grid;gap:clamp(12px,2vw,22px);grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.media-frame{position:relative}
.media-frame .media-badge{
  position:absolute;left:12px;top:12px;z-index:2;
  padding:4px 10px;font-size:12px;letter-spacing:.12em;
  background:var(--ink-950);border:1px solid var(--gold-500);color:var(--gold-300);
}

/* ---------- 12 动效 ---------- */
.js-on [data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .62s var(--ease),transform .62s var(--ease)}
.js-on [data-reveal].is-in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;transition-delay:0ms !important}
  .js-on [data-reveal]{opacity:1;transform:none}
  .nav-link:hover,.btn:hover,.copy-btn:hover,.footer-link:hover,.side-rail-link:hover{transform:none}
}

/* ---------- 13 响应式 ---------- */
@media (max-width:1099px){
  .header-inner{grid-template-columns:minmax(0,1fr) auto;gap:12px}
  .nav-toggle{display:inline-flex}
  .site-nav{
    grid-column:1 / -1;
    align-items:stretch;
    max-height:0;opacity:0;visibility:hidden;overflow:hidden;
    transition:max-height .34s var(--ease),opacity .24s var(--ease),visibility .24s var(--ease);
  }
  .site-header[data-open] .site-nav,
  .site-nav[data-open]{
    max-height:72vh;opacity:1;visibility:visible;overflow-y:auto;
    margin-top:8px;padding-top:14px;border-top:1px solid var(--line);
  }
  .nav-caption{justify-content:space-between;width:100%}
  .nav-list{flex-direction:column;gap:0;justify-content:flex-start;width:100%}
  .nav-item{border-bottom:1px solid var(--line)}
  .nav-link{display:flex;justify-content:flex-start;gap:12px;padding:13px 6px;font-size:15px;width:100%}
  .nav-num{font-size:13px;min-width:22px}
  .nav-foot{padding-top:12px}
}
@media (max-width:900px){
  .side-rail{display:none}
}
@media (max-width:860px){
  .footer-top{grid-template-columns:1fr}
  .split,.split--rev{grid-template-columns:1fr}
  .brand-glyph{width:40px;height:40px;font-size:19px}
  .brand-name{font-size:17px}
}
@media (max-width:640px){
  body{font-size:16px;background-size:44px 44px}
  p{font-size:16px}
  .header-entry{display:none}
  .nav-toggle-label{display:none}
  .footer-bottom{justify-content:flex-start}
}