/* ==========================================================================
   华体登录指南 · 共享样式 /assets/site.css
   侧边导览轨道 + 印刷公告栏语汇
   ========================================================================== */

:root{
  --grass:#2F9E4F;
  --grass-deep:#24833E;
  --paper:#F8F6EF;
  --ink:#10243D;
  --ink-2:#1E3C63;
  --track:#F26B21;
  --mist:#DFEEDD;
  --cyan:#14C8A0;
  --peach:#FFD8C0;
  --charcoal:#16181A;
  --rule:#C6CBBE;
  --muted:#5A6270;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-sans:"Noto Sans SC","HarmonyOS Sans","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;

  --rail-w:88px;
  --bar-h:56px;
  --nav-h:58px;
  --header-h:115px;
  --wrap:1180px;
  --gutter:32px;
  --radius:8px;
  --shadow:0 2px 0 rgba(16,36,61,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;}
body{
  margin:0;
  padding-top:var(--header-h);
  padding-left:var(--rail-w);
  background:var(--paper);
  color:var(--charcoal);
  font-family:var(--font-sans);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
ul,ol{margin:0;padding:0;list-style:none;}
p,figure,blockquote{margin:0;}
hr{border:0;}
:focus-visible{outline:3px solid var(--track);outline-offset:3px;border-radius:2px;}
#main-content{scroll-margin-top:calc(var(--header-h) + 20px);}

/* ---------- 中文排版基线 ---------- */
h1,h2,h3{margin:0;font-weight:700;}
h1{
  font-family:var(--font-serif);
  font-size:clamp(40px,5vw,64px);
  line-height:1.15;
  letter-spacing:-.01em;
  color:var(--ink);
}
h2{
  font-family:var(--font-serif);
  font-size:clamp(26px,3vw,34px);
  line-height:1.3;
  letter-spacing:-.005em;
  color:var(--ink);
}
h3{
  font-family:var(--font-sans);
  font-size:clamp(18px,1.6vw,22px);
  line-height:1.5;
  letter-spacing:.01em;
  color:var(--ink);
}
p{max-width:38em;}

/* ---------- 工具类 ---------- */
.mono{font-family:var(--font-mono);font-weight:500;letter-spacing:.02em;font-variant-numeric:tabular-nums;}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.skip-link{
  position:fixed;top:10px;left:12px;z-index:200;
  display:inline-block;padding:12px 22px;
  background:var(--ink);color:var(--paper);
  font-weight:800;font-size:15px;border-radius:6px;
  transform:translateY(-200%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0);}
.container{
  width:100%;max-width:var(--wrap);
  margin:0 auto;padding:0 var(--gutter);
}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,16px);}
.rule-line{height:1px;background:var(--rule);width:100%;}
.lede{
  font-size:18px;line-height:1.8;color:#3C4451;max-width:38em;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  min-height:48px;padding:12px 26px;
  border:1.5px solid transparent;border-radius:999px;
  font-family:var(--font-sans);font-weight:800;font-size:16px;letter-spacing:.02em;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px);}
.btn--solid{background:var(--grass);color:var(--paper);box-shadow:0 2px 0 rgba(16,36,61,.18);}
.btn--solid:hover{background:var(--grass-deep);}
.btn--ghost{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn--ghost:hover{background:var(--ink);color:var(--paper);}
.btn--dark{background:var(--ink);color:var(--paper);box-shadow:0 2px 0 rgba(16,36,61,.2);}
.btn--dark:hover{background:var(--ink-2);}

/* ---------- 状态标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:3px 11px;border:1px solid var(--rule);border-radius:999px;
  background:#fff;color:var(--ink-2);
  font-size:12px;font-weight:700;letter-spacing:.04em;line-height:1.7;
  white-space:nowrap;
}
.tag--ok{border-color:rgba(20,200,160,.55);background:rgba(20,200,160,.13);color:#0A6B57;}
.tag--ok::before{
  content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);
  animation:pulse 3.2s ease-in-out infinite;
}
.tag--warn{border-color:rgba(242,107,33,.38);background:var(--peach);color:#8A3A0C;}

@keyframes pulse{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.45;transform:scale(.82);}
}

/* ---------- 展览标签 ---------- */
.exhibit-label{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);
}
.exhibit-label::before{
  content:"";display:block;width:24px;height:1.5px;background:var(--track);
}

/* ---------- 分区 ---------- */
.section{
  padding:56px 0;
  border-top:1px solid var(--rule);
}
.section:first-of-type{border-top:0;}
.section-bar{
  display:flex;align-items:center;gap:14px;
  margin-bottom:28px;
}
.section-bar::before{
  content:"";display:block;width:56px;height:8px;border-radius:2px;
  background:var(--grass);
}
.section--alt .section-bar::before{background:var(--track);}
.section-bar-num{
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.16em;color:var(--muted);white-space:nowrap;
}

/* ---------- 卡片 / 纸张叠层 ---------- */
.card{
  background:var(--paper);
  border:1px solid var(--rule);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.card__body{padding:22px 24px;}

.paper-stack{
  position:relative;
  background:var(--paper);
  border:1px solid var(--rule);
  border-radius:var(--radius);
  box-shadow:
    6px 6px 0 -1px var(--paper),
    6px 6px 0 0 var(--rule),
    12px 12px 0 -1px var(--paper),
    12px 12px 0 0 var(--rule),
    0 2px 0 rgba(16,36,61,.10);
}

.print-frame{
  position:relative;
  padding:24px;
  background:var(--paper);
  border:2px solid var(--ink);
  border-radius:2px;
}
.print-frame::before{
  content:"";position:absolute;inset:6px;border:1px dashed var(--rule);
  pointer-events:none;
}
.print-frame::after{
  content:"";position:absolute;inset:-2px;pointer-events:none;
  background:
    linear-gradient(var(--grass),var(--grass)) left top/14px 2px no-repeat,
    linear-gradient(var(--grass),var(--grass)) left top/2px 14px no-repeat,
    linear-gradient(var(--track),var(--track)) right top/14px 2px no-repeat,
    linear-gradient(var(--track),var(--track)) right top/2px 14px no-repeat,
    linear-gradient(var(--track),var(--track)) left bottom/14px 2px no-repeat,
    linear-gradient(var(--track),var(--track)) left bottom/2px 14px no-repeat,
    linear-gradient(var(--grass),var(--grass)) right bottom/14px 2px no-repeat,
    linear-gradient(var(--grass),var(--grass)) right bottom/2px 14px no-repeat;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin:0 0 26px;}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
}
.breadcrumb-item{display:inline-flex;align-items:center;gap:10px;}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--rule);}
.breadcrumb-item a{border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease);}
.breadcrumb-item a:hover{color:var(--grass);border-bottom-color:var(--grass);}
.breadcrumb-item[aria-current="page"]{color:var(--ink);font-weight:500;}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}

/* ---------- 图片容器基础规则 ---------- */
.figure{display:flex;flex-direction:column;gap:10px;margin:0;}
.figure__media{
  position:relative;width:100%;aspect-ratio:16/10;
  overflow:hidden;border:1px solid var(--rule);border-radius:var(--radius);
  background:
    radial-gradient(120% 90% at 15% 10%,rgba(47,158,79,.16),transparent 60%),
    radial-gradient(100% 80% at 90% 90%,rgba(242,107,33,.16),transparent 62%),
    var(--mist);
}
.figure__media--portrait{aspect-ratio:4/5;}
.figure__media--wide{aspect-ratio:21/9;}
.figure__media img{width:100%;height:100%;object-fit:cover;}
.figure__cap{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--muted);line-height:1.7;
}
.figure__cap::before{content:"— ";}

/* ---------- 滚动显现 ---------- */
.reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
.reveal.is-visible{opacity:1;transform:none;}

/* ==========================================================================
   页头
   ========================================================================== */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:var(--paper);
  border-bottom:1px solid var(--rule);
}
.header-main{margin-left:var(--rail-w);}

/* 品牌轨道 */
.brand-rail{
  position:fixed;top:0;left:0;bottom:0;z-index:70;
  width:var(--rail-w);
  display:flex;flex-direction:column;align-items:center;
  padding:18px 0 16px;
  background:linear-gradient(180deg,var(--grass) 0%,#2A9148 62%,#25833F 100%);
  color:var(--paper);
}
.rail-brand{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  padding:4px 0 2px;
}
.rail-brand-cn{
  writing-mode:vertical-rl;text-orientation:upright;
  font-family:var(--font-serif);font-weight:700;font-size:26px;
  letter-spacing:.16em;color:var(--paper);line-height:1.1;
}
.rail-brand-en{
  writing-mode:vertical-rl;
  font-size:9px;letter-spacing:.28em;
  color:rgba(248,246,239,.62);
}
.rail-caption{
  margin-top:20px;
  writing-mode:vertical-rl;
  font-size:11px;letter-spacing:.22em;line-height:1.9;
  color:rgba(248,246,239,.82);
  max-width:none;
}
.rail-scale{
  margin-top:auto;
  display:flex;flex-direction:column;align-items:center;gap:14px;
}
.rail-scale-item{
  width:16px;height:2px;border-radius:2px;
  background:rgba(248,246,239,.32);
  transition:background .18s var(--ease),width .18s var(--ease);
}
.rail-scale-item.is-lit{background:rgba(248,246,239,.95);width:24px;}
.rail-foot{
  margin-top:24px;
  display:flex;flex-direction:column;align-items:center;gap:9px;
}
.rail-lamp{
  width:9px;height:9px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(20,200,160,.25);
  animation:pulse 3.2s ease-in-out infinite;
}
.rail-ver{font-size:11px;letter-spacing:.06em;color:rgba(248,246,239,.86);}

/* 头部横条 */
.header-bar{
  display:flex;align-items:center;justify-content:flex-end;gap:18px;
  height:var(--bar-h);
  padding:0 var(--gutter);
  border-bottom:1px solid var(--rule);
  background:var(--paper);
}
.brand-lockup{display:none;align-items:baseline;gap:9px;}
.brand-lockup-cn{
  font-family:var(--font-serif);font-weight:700;font-size:22px;
  letter-spacing:.06em;color:var(--ink);
}
.brand-lockup-tag{font-size:11px;letter-spacing:.08em;color:var(--muted);}

.header-update{display:inline-flex;align-items:center;gap:9px;max-width:none;}
.header-update-label{font-size:12px;letter-spacing:.1em;color:var(--muted);}
.header-update-time{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:76px;padding:2px 10px;
  background:#fff;border:1px solid var(--rule);border-radius:999px;
  font-size:14px;color:var(--ink);
}
.header-subscribe{
  display:inline-flex;align-items:center;
  padding:6px 16px;border:1px solid var(--ink);border-radius:999px;
  font-size:13px;font-weight:700;letter-spacing:.02em;color:var(--ink);
  transition:background .18s var(--ease),color .18s var(--ease);
}
.header-subscribe:hover{background:var(--ink);color:var(--paper);}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:8px 14px;border:1px solid var(--ink);border-radius:999px;
  font-size:13px;font-weight:800;letter-spacing:.06em;color:var(--ink);
}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:18px;}
.nav-toggle-bars span{
  display:block;height:2px;width:100%;border-radius:2px;background:currentColor;
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.nav-toggle-word{white-space:nowrap;}

/* 栏目导航 */
.site-nav{
  display:flex;align-items:center;justify-content:flex-end;
  height:var(--nav-h);
  padding:0 var(--gutter);
  background:var(--paper);
}
.nav-list{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.nav-item{display:block;}
.nav-link{
  display:block;padding:7px 15px;
  border:1px solid rgba(22,24,26,.26);border-radius:999px;
  font-size:15px;font-weight:700;letter-spacing:.02em;color:var(--charcoal);
  transition:color .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease);
}
.nav-link:hover{border-color:var(--grass);color:var(--grass);}
.nav-link[aria-current="page"]{
  background:var(--grass);border-color:var(--grass);color:var(--paper);
}
.nav-link[aria-current="page"]:hover{background:var(--grass-deep);border-color:var(--grass-deep);color:var(--paper);}

.nav-meta{display:none;}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  margin-top:72px;
  padding:52px 0 0;
  background:var(--ink);
  color:#E7ECF3;
  border-top:8px solid var(--track);
}
.footer-inner{
  width:100%;max-width:var(--wrap);
  margin:0 auto;padding:0 var(--gutter);
  display:grid;
  grid-template-columns:1.35fr .85fr 1fr 1.5fr 1fr;
  gap:32px;
}
.footer-brand-cn{
  font-family:var(--font-serif);font-weight:700;font-size:30px;
  letter-spacing:.08em;color:var(--paper);max-width:none;
}
.footer-brand-sub{
  margin-top:8px;font-size:13px;letter-spacing:.1em;
  color:rgba(231,236,243,.66);max-width:14em;
}
.footer-brand-ver{
  margin-top:16px;font-size:12px;letter-spacing:.06em;
  color:var(--cyan);max-width:none;
}
.footer-col-title{
  margin:0 0 14px;
  font-family:var(--font-sans);font-size:12px;font-weight:800;
  letter-spacing:.18em;color:var(--cyan);
}
.footer-list{display:flex;flex-direction:column;gap:10px;font-size:14px;}
.footer-list a{
  color:rgba(231,236,243,.82);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-list a:hover{color:var(--paper);border-bottom-color:var(--track);}
.footer-list--plain{gap:14px;}
.footer-list--plain li{display:flex;flex-direction:column;gap:3px;}
.footer-label{
  font-size:11px;letter-spacing:.14em;
  color:rgba(231,236,243,.48);
}
.footer-value{font-size:14px;line-height:1.6;color:rgba(231,236,243,.9);}
.footer-meta{
  width:100%;max-width:var(--wrap);
  margin:46px auto 0;padding:18px var(--gutter) 26px;
  border-top:1px solid rgba(231,236,243,.16);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 28px;
}
.footer-note{font-size:12.5px;line-height:1.7;color:rgba(231,236,243,.6);max-width:42em;}
.footer-legal{font-size:12px;letter-spacing:.04em;color:rgba(231,236,243,.56);max-width:none;}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1180px){
  .footer-inner{grid-template-columns:1.2fr 1fr 1.4fr;row-gap:34px;}
}

@media (max-width:1024px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:959px){
  :root{
    --rail-w:0px;
    --header-h:57px;
    --gutter:20px;
  }
  body{padding-left:0;}
  .brand-rail{display:none;}
  .header-main{margin-left:0;}
  .header-bar{justify-content:space-between;gap:12px;height:56px;}
  .brand-lockup{display:inline-flex;}
  .header-update,.header-subscribe{display:none;}
  .nav-toggle{display:inline-flex;}
  .site-nav{
    position:fixed;left:0;right:0;top:var(--header-h);bottom:0;
    height:auto;
    display:block;
    padding:18px var(--gutter) 36px;
    overflow-y:auto;
    background:var(--paper);
    border-top:1px solid var(--rule);
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s linear;
  }
  .site-header[data-open] .site-nav{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:10px;}
  .nav-link{
    padding:15px 18px;border-radius:var(--radius);
    font-size:17px;
  }
  .site-header[data-open] .nav-toggle-bars span:nth-child(1){transform:translateY(6px) 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(-6px) rotate(-45deg);}
  .nav-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:14px;
    margin-top:22px;padding-top:18px;
    border-top:1px solid var(--rule);
  }
  .nav-meta-line{display:inline-flex;align-items:center;gap:9px;max-width:none;}
  .nav-meta-label{font-size:12px;letter-spacing:.1em;color:var(--muted);}
  .nav-meta-value{
    padding:2px 10px;background:#fff;border:1px solid var(--rule);
    border-radius:999px;font-size:14px;color:var(--ink);
  }
  .nav-meta-link{
    padding:6px 16px;border:1px solid var(--ink);border-radius:999px;
    font-size:13px;font-weight:700;color:var(--ink);
  }
  body.nav-open{overflow:hidden;}
  .grid--2,.grid--3{grid-template-columns:minmax(0,1fr);}
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:640px){
  :root{--gutter:16px;}
  body{font-size:16px;}
  .section{padding:40px 0;}
  .print-frame{padding:18px;}
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:28px;}
  .footer-meta{flex-direction:column;align-items:flex-start;}
  .lede{font-size:17px;}
}

/* ==========================================================================
   动效偏好
   ========================================================================== */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .reveal{opacity:1;transform:none;}
  .rail-scale-item.is-lit{width:16px;}
}