/* ==========================================================================
   博狗网登录入口 — 共享站点样式 /assets/site.css
   夜航墨绿天幕 · 暖砂金路径刻度 · 电光青当前节点
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink:#071712;
  --forest:#0E2A21;
  --moss:#1F4A3A;
  --sage:#7FA18F;
  --paper:#F3EDDF;
  --gold:#D8B26A;
  --gold-deep:#A9782F;
  --cyan:#35E0C4;
  --mist:#DED8CA;
  --white:#FFFFFF;

  --ink-08:rgba(7,23,18,.08);
  --ink-14:rgba(7,23,18,.14);
  --ink-45:rgba(7,23,18,.45);
  --ink-62:rgba(7,23,18,.62);
  --ink-72:rgba(7,23,18,.72);
  --ink-88:rgba(7,23,18,.88);

  --paper-92:rgba(243,237,223,.92);
  --paper-72:rgba(243,237,223,.72);
  --paper-52:rgba(243,237,223,.52);
  --paper-38:rgba(243,237,223,.38);

  --gold-16:rgba(216,178,106,.16);
  --gold-35:rgba(216,178,106,.35);
  --gold-55:rgba(216,178,106,.55);
  --gold-75:rgba(216,178,106,.75);
  --cyan-12:rgba(53,224,196,.12);
  --cyan-35:rgba(53,224,196,.35);

  --sage-18:rgba(127,161,143,.18);
  --sage-32:rgba(127,161,143,.32);

  --font-display:"Noto Serif SC","Songti SC","STSong","SimSun",Georgia,"Times New Roman",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --header-bar-h:68px;
  --ticker-h:34px;
  --header-h:calc(var(--header-bar-h) + var(--ticker-h));

  --gutter:clamp(18px,4vw,44px);
  --max:1280px;
  --radius:3px;

  --shadow-paper:0 1px 0 rgba(169,120,47,.16),0 14px 28px -22px rgba(7,23,18,.55);
  --shadow-lift:0 18px 34px -24px rgba(7,23,18,.62);
}

/* ---------- 2. 重置与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
figure{margin:0}
h1,h2,h3,h4,h5{
  margin:0 0 .55em;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.16;
  letter-spacing:-.012em;
  color:var(--ink);
  text-wrap:balance;
}
h1{font-size:clamp(34px,5.4vw,66px)}
h2{font-size:clamp(26px,3.4vw,42px)}
h3{font-size:clamp(20px,2.1vw,26px);line-height:1.32;letter-spacing:0}
h4{font-size:18px;line-height:1.4;font-family:var(--font-body);font-weight:700;letter-spacing:0}
p{margin:0 0 1.05em}
ul,ol{margin:0 0 1.05em;padding-left:1.3em}
li{margin-bottom:.32em}
a{color:var(--gold-deep);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--forest)}
strong{font-weight:700}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
hr{border:0;height:1px;background:var(--gold-35);margin:2.2em 0}

:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--cyan)}

/* ---------- 3. 通用工具 ---------- */
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}
.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
.wrap{
  width:100%;max-width:var(--max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.wrap--narrow{max-width:820px}
.section{padding-block:clamp(48px,7vw,96px)}

.prose{
  max-width:70ch;
  font-size:17px;
  line-height:1.85;
  color:var(--ink-88);
}
.prose > :last-child{margin-bottom:0}
.prose h2,.prose h3{margin-top:1.6em}

#main-content{display:block;scroll-margin-top:calc(var(--header-h) + 14px)}

/* ---------- 4. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:14px;font-weight:700;line-height:1;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn-primary:hover{background:#E5C689;color:var(--ink);border-color:#E5C689}
.btn-ghost{background:transparent;color:var(--paper);border-color:var(--gold-55)}
.btn-ghost:hover{background:var(--gold-16);color:var(--gold);border-color:var(--gold)}
.btn-quiet{background:transparent;color:var(--ink);border-color:var(--gold-55)}
.btn-quiet:hover{background:var(--gold-16);color:var(--gold-deep);border-color:var(--gold-deep)}

/* ---------- 5. 标签 / 眉题 / 面包屑 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;
  border:1px solid var(--gold-35);
  border-radius:2px;
  background:var(--gold-16);
  color:var(--gold-deep);
  font-family:var(--font-mono);
  font-size:11px;line-height:1.7;
  letter-spacing:.12em;
  text-transform:uppercase;
  white-space:nowrap;
}
.tag--cyan{
  border-color:var(--cyan-35);
  background:var(--cyan-12);
  color:#0A5749;
}
.tag--dark{
  border-color:var(--gold-55);
  background:rgba(7,23,18,.5);
  color:var(--gold);
}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--gold-deep);
}
.eyebrow::before{
  content:"";flex:none;
  width:26px;height:1px;background:currentColor;
}
.eyebrow--light{color:var(--gold)}
.eyebrow--cyan{color:var(--cyan)}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  margin:0 0 20px;padding:0;
  list-style:none;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--sage);
}
.breadcrumbs li{margin:0;display:inline-flex;align-items:center;gap:8px}
.breadcrumbs a{
  color:inherit;text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.breadcrumbs a:hover{color:var(--gold-deep);border-bottom-color:var(--gold)}
.breadcrumbs [aria-current="page"]{color:var(--gold-deep)}
.crumb-sep{opacity:.45;font-size:10px}

/* ---------- 6. 纸张叠层卡 / 图框 ---------- */
.paper-card{
  position:relative;
  padding:clamp(20px,3vw,30px) clamp(18px,2.6vw,26px);
  background:var(--paper);
  border:1px solid rgba(169,120,47,.3);
  border-radius:var(--radius);
  box-shadow:var(--shadow-paper);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.paper-card:hover{
  transform:translateY(-3px);
  box-shadow:var(--shadow-lift);
  border-color:var(--gold);
}
.paper-card--flat{transition:none}
.paper-card--flat:hover{transform:none;box-shadow:var(--shadow-paper);border-color:rgba(169,120,47,.3)}
.paper-card > :last-child{margin-bottom:0}

.media-frame{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16 / 9;
  overflow:hidden;
  border:1px solid var(--gold-35);
  border-radius:var(--radius);
  background-color:var(--forest);
  background-image:
    radial-gradient(90% 70% at 82% 8%,rgba(53,224,196,.16),transparent 62%),
    linear-gradient(140deg,var(--forest) 0%,var(--moss) 62%,#123427 100%);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(243,237,223,.06) 0 1px,transparent 1px 9px);
  opacity:.7;
}
.media-frame img,
.media-frame svg,
.media-frame picture{
  position:relative;z-index:1;
  width:100%;height:100%;object-fit:cover;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-caption{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--sage);
}

/* ==========================================================================
   7. 页头 —— 夜间仪表横梁
   ========================================================================== */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  color:var(--paper);
  background-color:transparent;
  background-image:linear-gradient(180deg,rgba(7,23,18,.92) 0%,rgba(7,23,18,.66) 58%,rgba(7,23,18,.1) 100%);
  -webkit-backdrop-filter:blur(3px);
  backdrop-filter:blur(3px);
  transition:background-color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold-55) 24%,rgba(53,224,196,.32) 72%,transparent);
  opacity:.7;transition:opacity .2s ease;
  pointer-events:none;
}
.site-header.is-scrolled{
  background-color:rgba(14,42,33,.985);
  background-image:none;
  box-shadow:0 16px 34px -28px rgba(0,0,0,.95);
}
.site-header.is-scrolled::after{opacity:1}

.header-bar{
  position:relative;
  z-index:2;
  display:flex;align-items:center;
  height:var(--header-bar-h);
}
.header-inner{
  width:100%;max-width:var(--max);
  margin-inline:auto;
  padding-inline:var(--gutter);
  display:flex;align-items:center;
  gap:clamp(10px,2.2vw,30px);
}

/* 品牌徽记 */
.brand{
  position:relative;z-index:61;
  display:inline-flex;align-items:center;gap:11px;
  color:inherit;text-decoration:none;
  flex:0 0 auto;
}
.brand-mark{
  display:grid;place-items:center;
  width:40px;height:40px;
  color:var(--gold);
  border:1px solid var(--gold-55);
  border-radius:var(--radius);
  background:rgba(7,23,18,.42);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.brand:hover .brand-mark{
  border-color:var(--cyan);
  color:var(--cyan);
  background:rgba(53,224,196,.08);
}
.brand-text{display:grid;gap:1px;line-height:1.1}
.brand-name{
  font-family:var(--font-display);
  font-size:19px;font-weight:900;
  letter-spacing:.005em;
  color:var(--paper);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:var(--sage);
  transition:color .2s ease;
}
.brand:hover .brand-sub{color:var(--gold)}

/* 导航 */
.site-nav{
  display:flex;align-items:center;
  gap:clamp(8px,1.4vw,20px);
  margin-inline-start:auto;
}
.nav-list{
  display:flex;align-items:center;
  gap:2px;
  margin:0;padding:0;
  list-style:none;
}
.nav-list li{margin:0}
.nav-link{
  position:relative;
  display:inline-flex;align-items:baseline;gap:6px;
  padding:11px 11px;
  color:var(--paper-72);
  text-decoration:none;
  font-size:14.5px;font-weight:500;
  line-height:1.3;
  white-space:nowrap;
  transition:color .18s ease;
}
.nav-num{
  font-family:var(--font-mono);
  font-size:9.5px;
  letter-spacing:.06em;
  color:var(--sage);
  opacity:.85;
  transition:color .18s ease,opacity .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:11px;right:11px;bottom:5px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease,background-color .2s ease;
}
.nav-link:hover,
.nav-link:focus-visible{color:var(--white)}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link:hover .nav-num{color:var(--gold)}
.nav-link[aria-current="page"]{color:var(--white)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--cyan)}
.nav-link[aria-current="page"] .nav-num{color:var(--gold);opacity:1}

.nav-foot{display:flex;align-items:center;gap:14px}
.nav-cta{white-space:nowrap}
.nav-meta{
  display:none;
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--sage);
}

/* 移动菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;gap:10px;
  margin-inline-start:auto;
  padding:9px 13px;
  background:rgba(7,23,18,.35);
  border:1px solid var(--gold-55);
  border-radius:var(--radius);
  color:var(--paper);
  font-size:13px;font-weight:700;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background-color .18s ease,border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold)}
.nav-toggle-label{line-height:1}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:18px;height:10px;
  flex:0 0 auto;
}
.nav-toggle-bars i{
  position:absolute;left:0;right:0;
  height:1.5px;
  background:currentColor;
  border-radius:1px;
  transition:transform .2s ease,top .2s ease,bottom .2s ease;
}
.nav-toggle-bars i:nth-child(1){top:0}
.nav-toggle-bars i:nth-child(2){bottom:0}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(1){top:4.25px;transform:rotate(45deg)}
.site-header[data-open="true"] .nav-toggle-bars i:nth-child(2){bottom:4.25px;transform:rotate(-45deg)}
.site-header[data-open="true"] .nav-toggle{border-color:var(--cyan);color:var(--cyan)}

/* 公告刻度带 */
.header-ticker{
  position:relative;
  z-index:2;
  height:var(--ticker-h);
  display:flex;align-items:center;
  border-top:1px solid rgba(216,178,106,.2);
  background:rgba(7,23,18,.4);
  transition:background-color .2s ease;
}
.site-header.is-scrolled .header-ticker{
  background:rgba(7,23,18,.28);
  border-top-color:rgba(216,178,106,.14);
}
.ticker-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:18px;
  width:100%;
}
.ticker-notice{
  display:inline-flex;align-items:center;gap:9px;
  margin:0;
  font-size:12.5px;
  letter-spacing:.02em;
  color:var(--paper-72);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.ticker-dot{
  flex:0 0 auto;
  width:6px;height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,224,196,.16);
}
.ticker-meta{
  margin:0;
  font-size:11px;
  letter-spacing:.12em;
  color:var(--sage);
  white-space:nowrap;
}

/* 阅读进度 */
.scroll-meter{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(216,178,106,.14);
  pointer-events:none;
  z-index:3;
}
.scroll-meter-fill{
  display:block;
  height:100%;width:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--gold) 0%,var(--gold) 45%,var(--cyan) 100%);
  transition:transform .1s linear;
}

/* ==========================================================================
   8. 页脚 —— 夜航收束
   ========================================================================== */
.site-footer{
  position:relative;
  padding:clamp(46px,6.5vw,84px) 0 0;
  background:var(--ink);
  color:var(--paper-72);
  font-size:14.5px;
  line-height:1.75;
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold-75) 22%,var(--cyan-35) 70%,transparent);
}
.site-footer::after{
  content:"";position:absolute;
  right:-70px;top:-60px;
  width:260px;height:260px;
  border:1px solid var(--cyan-12);
  border-radius:50%;
  pointer-events:none;
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,2fr);
  gap:clamp(26px,4.6vw,72px);
  padding-bottom:clamp(28px,4vw,50px);
  border-bottom:1px solid var(--sage-18);
}
.footer-mark{
  display:inline-block;
  font-family:var(--font-display);
  font-size:clamp(20px,2.3vw,26px);
  font-weight:900;
  letter-spacing:-.012em;
  color:var(--paper);
  text-decoration:none;
  transition:color .18s ease;
}
.footer-mark:hover{color:var(--gold)}
.footer-line{
  margin:10px 0 12px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--gold);
}
.footer-desc{
  margin:0;
  max-width:38ch;
  font-size:14px;
  line-height:1.8;
  color:var(--paper-52);
}

.footer-groups{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,2.6vw,40px);
}
.footer-group-title{
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11px;font-weight:500;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sage);
}
.footer-links{
  display:grid;gap:9px;
  margin:0;padding:0;
  list-style:none;
}
.footer-links li{margin:0}
.footer-link{
  color:var(--paper-72);
  text-decoration:none;
  font-size:14.5px;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer-link:hover{
  color:var(--gold);
  border-bottom-color:var(--gold-55);
}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(190px,1fr));
  gap:clamp(14px,2.4vw,40px);
  padding:clamp(24px,3.2vw,36px) 0 0;
}
.contact-item{display:grid;gap:4px;min-width:0}
.contact-label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sage);
}
.contact-value{
  color:var(--paper);
  font-size:14.5px;
  line-height:1.6;
  overflow-wrap:anywhere;
}
.contact-note{
  max-width:68ch;
  margin:16px 0 0;
  font-size:12.5px;
  line-height:1.75;
  color:var(--paper-38);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 26px;
  margin-top:clamp(22px,3vw,34px);
  padding:18px 0 clamp(24px,3vw,32px);
  border-top:1px solid var(--sage-18);
  font-size:12.5px;
  color:var(--paper-38);
}
.footer-copy{margin:0}
.legal-links{
  display:flex;flex-wrap:wrap;
  gap:6px 20px;
  margin:0;padding:0;
  list-style:none;
}
.legal-links li{margin:0}
.legal-links .footer-link{font-size:12.5px;color:var(--paper-52)}
.legal-links .footer-link:hover{color:var(--gold)}
.footer-icp{
  margin:0 0 0 auto;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--paper-38);
}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:clamp(14px,2.4vw,26px);
  bottom:clamp(14px,2.4vw,26px);
  z-index:70;
  display:grid;place-items:center;
  width:46px;height:46px;
  border:1px solid var(--gold-55);
  border-radius:50%;
  background:rgba(14,42,33,.96);
  color:var(--gold);
  cursor:pointer;
  opacity:0;visibility:hidden;
  transform:translateY(10px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s,border-color .18s ease,color .18s ease,background-color .18s ease;
}
.to-top:hover{
  border-color:var(--cyan);
  color:var(--cyan);
  background:rgba(31,74,58,.98);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}

/* ==========================================================================
   9. 响应式
   ========================================================================== */
@media (max-width:1119px){
  :root{--header-bar-h:60px}

  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;
    inset:0;
    z-index:60;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:calc(var(--header-h) + 26px) var(--gutter) 44px;
    background-color:var(--forest);
    background-image:radial-gradient(120% 70% at 100% 0%,rgba(53,224,196,.12),transparent 62%);
    overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .22s ease,transform .22s ease,visibility .22s;
  }
  .site-header[data-open="true"] .site-nav{
    opacity:1;visibility:visible;pointer-events:auto;
    transform:none;
  }
  body.nav-open{overflow:hidden}

  .nav-list{
    flex-direction:column;align-items:stretch;
    gap:0;
    margin:0 0 26px;
  }
  .nav-list li{border-bottom:1px solid var(--sage-18)}
  .nav-list li:first-child{border-top:1px solid var(--sage-18)}
  .nav-link{
    display:flex;align-items:baseline;gap:12px;
    padding:15px 2px;
    font-family:var(--font-display);
    font-size:19px;font-weight:900;
    color:var(--paper);
  }
  .nav-link::after{display:none}
  .nav-num{font-size:11px;color:var(--sage)}
  .nav-link[aria-current="page"]{color:var(--cyan)}
  .nav-link[aria-current="page"] .nav-num{color:var(--cyan)}

  .nav-foot{
    flex-direction:column;align-items:flex-start;
    gap:14px;
    margin-top:auto;
  }
  .nav-cta{width:100%;padding:14px 20px;font-size:15px}
  .nav-meta{display:block;color:var(--sage)}

  .ticker-meta{display:none}

  .footer-top{grid-template-columns:1fr}
}

@media (max-width:860px){
  .footer-groups{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px 20px}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:12px}
  .footer-icp{margin:0}
}

@media (max-width:640px){
  :root{--header-bar-h:56px;--header-h:var(--header-bar-h)}

  body{font-size:16px;line-height:1.78}
  .header-ticker{display:none}
  .brand-mark{width:34px;height:34px}
  .brand-name{font-size:16.5px}
  .brand-sub{font-size:8.5px;letter-spacing:.24em}
  .nav-toggle{padding:8px 11px;font-size:12px}

  .footer-groups{grid-template-columns:1fr;gap:22px}
  .footer-desc{max-width:none}
  .footer-contact{grid-template-columns:1fr;gap:16px}
  .legal-links{gap:6px 16px}
  .to-top{width:42px;height:42px}
}

/* ---------- 10. 动效与打印 ---------- */
@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;
  }
  .paper-card:hover,.btn:hover{transform:none}
  .site-nav{transition:none}
}

@media print{
  .site-header,.site-footer .to-top,.scroll-meter,.nav-toggle{display:none !important}
  body{background:#fff;color:#000;font-size:12pt}
  .site-footer{background:#fff;color:#000;border-top:1px solid #999}
  .footer-link,.footer-mark,.contact-value{color:#000 !important}
  a{text-decoration:none;color:#000}
  .paper-card{box-shadow:none;border-color:#bbb}
  #main-content{padding-top:0}
}