/* ==========================================================================
   丝路数据夜航 · 共享 Site Kit  /assets/site.css
   ========================================================================== */

:root{
  --yh-ink:#0B1020;
  --yh-ink-2:#131A2E;
  --yh-ink-3:#070B16;
  --yh-rule:#2A3350;
  --yh-gold:#D9A441;
  --yh-orange:#E2762F;
  --yh-ice:#7FC8D4;
  --yh-live:#39FF9E;
  --yh-alert:#E5484D;
  --yh-paper:#F4EBD8;
  --yh-mist:#8A93A8;

  --yh-font-display:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,sans-serif;
  --yh-font-body:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,sans-serif;
  --yh-font-editorial:"Songti SC","Source Han Serif SC","Noto Serif CJK SC",Georgia,"Times New Roman",serif;
  --yh-font-num:ui-monospace,"SFMono-Regular","SF Mono",Menlo,Consolas,"Roboto Mono","Courier New",monospace;

  --yh-w:1280px;
  --yh-gutter:clamp(16px,4vw,52px);
  --yh-hh:76px;
  --yh-rail:14px;
  --yh-ease:cubic-bezier(.2,.6,.2,1);
  --yh-shadow:0 18px 48px rgba(0,0,0,.45);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--yh-ink);
  color:var(--yh-paper);
  font-family:var(--yh-font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
a{color:var(--yh-ice);text-decoration:none}
a:hover{color:var(--yh-gold)}
button{font:inherit;color:inherit}
hr{border:0;border-top:1px solid var(--yh-rule);margin:0}
[id]{scroll-margin-top:calc(var(--yh-hh) + 20px)}
::selection{background:rgba(217,164,65,.35);color:#fff}

:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:2px solid var(--yh-gold);
  outline-offset:2px;
  border-radius:2px;
}

/* ---------- 排版 ---------- */
.yh-display{
  font-family:var(--yh-font-display);
  font-weight:800;
  font-size:clamp(44px,7vw,120px);
  line-height:1.02;
  letter-spacing:-.02em;
  color:var(--yh-paper);
}
.yh-h2{
  font-family:var(--yh-font-display);
  font-weight:800;
  font-size:clamp(28px,3.4vw,48px);
  line-height:1.16;
  letter-spacing:-.02em;
  color:var(--yh-paper);
}
.yh-h3{
  font-family:var(--yh-font-display);
  font-weight:700;
  font-size:clamp(20px,2vw,32px);
  line-height:1.3;
  letter-spacing:-.01em;
  color:var(--yh-paper);
}
.yh-eyebrow{
  display:inline-block;
  font-family:var(--yh-font-num);
  font-size:12px;
  letter-spacing:.28em;
  line-height:1.6;
  text-transform:uppercase;
  color:var(--yh-gold);
}
.yh-editorial{
  font-family:var(--yh-font-editorial);
  font-size:clamp(17px,1.5vw,19px);
  line-height:1.8;
  color:var(--yh-mist);
}
.yh-num{
  font-family:var(--yh-font-num);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
  letter-spacing:.02em;
}
.yh-prose{max-width:34em;font-size:17px;line-height:1.8;color:var(--yh-paper)}
.yh-prose p+p{margin-top:.9em}
.yh-prose strong{color:var(--yh-gold);font-weight:600}
.yh-prose a{border-bottom:1px solid rgba(127,200,212,.45)}

/* ---------- 容器与网格 ---------- */
.yh-container{width:100%;max-width:var(--yh-w);margin-inline:auto;padding-inline:var(--yh-gutter)}
.yh-container--narrow{max-width:820px}
.yh-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.yh-col-4{grid-column:span 4}
.yh-col-5{grid-column:span 5}
.yh-col-7{grid-column:span 7}
.yh-col-8{grid-column:span 8}
.yh-col-12{grid-column:span 12}
@media (max-width:860px){
  .yh-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .yh-col-4,.yh-col-5,.yh-col-7,.yh-col-8{grid-column:span 6}
}

/* ---------- 区块节奏 ---------- */
.yh-section{position:relative;padding-block:clamp(48px,7vw,96px)}
.yh-section--tint{background:var(--yh-ink-2)}
.yh-section--dark{background:var(--yh-ink-3)}
.yh-slant{
  position:relative;
  padding-block:clamp(40px,6vw,80px);
  clip-path:polygon(0 3%,100% 0,100% 97%,0 100%);
  background:linear-gradient(120deg,var(--yh-ink-2),var(--yh-ink) 70%);
  border-block:1px solid var(--yh-rule);
}

/* ---------- 面板 / 玻璃层 ---------- */
.yh-panel{
  position:relative;
  background:var(--yh-ink-2);
  border:1px solid var(--yh-rule);
  border-radius:3px;
  padding:clamp(18px,2.4vw,32px);
}
.yh-glass{
  position:relative;
  background:rgba(19,26,46,.55);
  border:1px solid rgba(127,200,212,.28);
  border-radius:3px;
  padding:clamp(18px,2.4vw,32px);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  transition:background .25s var(--yh-ease),transform .25s var(--yh-ease),border-color .25s var(--yh-ease);
}
.yh-glass:hover{background:rgba(19,26,46,.74);border-color:rgba(217,164,65,.5);transform:translateY(-3px)}
.yh-tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid rgba(226,118,47,.55);
  border-radius:999px;
  background:rgba(226,118,47,.12);
  color:var(--yh-orange);
  font-family:var(--yh-font-num);
  font-size:11.5px;
  letter-spacing:.12em;
}

/* ---------- 按钮 ---------- */
.yh-btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:11px 20px;
  font-family:var(--yh-font-display);
  font-size:15px;
  letter-spacing:.02em;
  line-height:1.2;
  color:var(--yh-gold);
  background:transparent;
  border:1px solid var(--yh-gold);
  border-radius:2px;
  cursor:pointer;
  text-decoration:none;
  transition:transform .2s var(--yh-ease),box-shadow .2s var(--yh-ease),background-color .2s var(--yh-ease),color .2s var(--yh-ease),border-color .2s var(--yh-ease);
}
.yh-btn:hover{transform:translateY(-2px)}
.yh-btn--primary{
  background:linear-gradient(100deg,var(--yh-gold),var(--yh-orange));
  border-color:transparent;
  color:#150F05;
  font-weight:700;
}
.yh-btn--primary:hover{box-shadow:0 10px 26px rgba(226,118,47,.34);color:#150F05}
.yh-btn--ghost{
  color:var(--yh-paper);
  border-color:var(--yh-rule);
  background:rgba(19,26,46,.6);
}
.yh-btn--ghost:hover{border-color:var(--yh-gold);color:var(--yh-gold)}
.yh-btn--ice{color:var(--yh-ice);border-color:var(--yh-ice)}
.yh-btn--ice:hover{background:rgba(127,200,212,.12);color:var(--yh-ice)}

/* ---------- 面包屑 ---------- */
.yh-breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:14px;
  font-family:var(--yh-font-num);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--yh-mist);
}
.yh-breadcrumb a{color:var(--yh-mist)}
.yh-breadcrumb a:hover{color:var(--yh-gold)}
.yh-breadcrumb__sep{color:var(--yh-rule)}
.yh-breadcrumb [aria-current="page"]{color:var(--yh-paper)}

/* ---------- 图片容器 ---------- */
.yh-media{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16/9;
  border:1px solid var(--yh-rule);
  border-radius:3px;
  background:linear-gradient(160deg,#16203A,#0B1020 70%);
}
.yh-media::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:0;
  background-image:
    repeating-linear-gradient(90deg,rgba(127,200,212,.10) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(127,200,212,.10) 0 1px,transparent 1px 48px);
  pointer-events:none;
}
.yh-media--wide{aspect-ratio:21/9}
.yh-media--tall{aspect-ratio:4/5}
.yh-media--square{aspect-ratio:1/1}
.yh-media__img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.yh-media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  z-index:2;
  padding:10px 14px;
  font-family:var(--yh-font-num);
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--yh-paper);
  background:linear-gradient(0deg,rgba(7,11,22,.92),rgba(7,11,22,0));
}
.yh-media__tag{
  position:absolute;
  top:12px;left:12px;
  z-index:2;
  padding:3px 10px;
  border-radius:999px;
  background:rgba(217,164,65,.94);
  color:#150F05;
  font-family:var(--yh-font-num);
  font-size:11px;
  letter-spacing:.1em;
}

/* ---------- 章节目录 ---------- */
.yh-toc{
  position:sticky;
  top:calc(var(--yh-hh) + 20px);
  padding:18px 18px 22px;
  background:rgba(19,26,46,.6);
  border:1px solid var(--yh-rule);
  border-left:2px solid var(--yh-gold);
  border-radius:3px;
}
.yh-toc__title{
  font-family:var(--yh-font-num);
  font-size:11.5px;
  letter-spacing:.24em;
  color:var(--yh-gold);
  text-transform:uppercase;
  margin-bottom:12px;
}
.yh-toc__list{display:grid;gap:2px}
.yh-toc__link{
  display:block;
  padding:7px 10px;
  font-size:14px;
  color:var(--yh-mist);
  border-radius:2px;
  transition:background-color .18s var(--yh-ease),color .18s var(--yh-ease),transform .18s var(--yh-ease);
}
.yh-toc__link:hover{color:var(--yh-paper);background:rgba(42,51,80,.5);transform:translateX(3px)}
.yh-toc__link[aria-current="true"]{
  color:var(--yh-ink);
  background:linear-gradient(100deg,var(--yh-gold),var(--yh-orange));
}
@media (max-width:960px){
  .yh-toc{position:static;top:auto}
}

/* ==========================================================================
   页头：框景导航
   ========================================================================== */
.yh-skip{
  position:absolute;
  left:8px;
  top:-72px;
  z-index:200;
  padding:10px 18px;
  background:var(--yh-gold);
  color:#150F05;
  font-size:14px;
  letter-spacing:.04em;
  border-radius:2px;
  transition:top .18s var(--yh-ease);
}
.yh-skip:focus{top:8px;color:#150F05}

.yh-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(11,16,32,.94);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid var(--yh-rule);
  box-shadow:0 1px 0 rgba(217,164,65,.26);
  color:var(--yh-paper);
}
.yh-header__rail{
  display:none;
  position:absolute;
  left:0;top:0;bottom:0;
  width:var(--yh-rail);
  border-right:1px solid rgba(42,51,80,.9);
  background:
    repeating-linear-gradient(180deg,rgba(42,51,80,.95) 0 1px,transparent 1px 26px),
    linear-gradient(180deg,rgba(217,164,65,.12),rgba(11,16,32,0) 65%);
}
.yh-header__rail::after{
  content:"";
  position:absolute;
  left:0;top:0;
  width:100%;height:3px;
  background:var(--yh-gold);
}
@media (min-width:1024px){
  .yh-header__rail{display:block}
}

.yh-header__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,26px);
  max-width:var(--yh-w);
  margin-inline:auto;
  min-height:var(--yh-hh);
  padding:10px var(--yh-gutter);
}
@media (min-width:1024px){
  .yh-header__inner{padding-left:calc(var(--yh-gutter) + 8px)}
}

/* 品牌锁定 */
.yh-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  min-width:0;
  color:var(--yh-paper);
  text-decoration:none;
}
.yh-brand:hover{color:var(--yh-paper)}
.yh-brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  flex:0 0 auto;
  border:1px solid rgba(217,164,65,.75);
  border-radius:2px;
  background:radial-gradient(circle at 28% 22%,rgba(217,164,65,.32),transparent 62%),var(--yh-ink-2);
}
.yh-brand__mark::before{
  content:"";
  width:15px;height:15px;
  border:1.5px solid var(--yh-ice);
  border-radius:1px;
  transform:rotate(45deg);
}
.yh-brand__mark::after{
  content:"";
  position:absolute;
  width:4px;height:4px;
  border-radius:50%;
  background:var(--yh-gold);
  box-shadow:0 0 8px rgba(217,164,65,.9);
}
.yh-brand__text{display:flex;flex-direction:column;min-width:0;line-height:1.25}
.yh-brand__name{
  font-family:var(--yh-font-display);
  font-weight:700;
  font-size:15.5px;
  letter-spacing:-.01em;
  color:var(--yh-paper);
  white-space:nowrap;
}
.yh-brand__tag{
  font-family:var(--yh-font-num);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--yh-mist);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

/* 移动导航按钮 */
.yh-navtoggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  background:rgba(19,26,46,.8);
  border:1px solid var(--yh-rule);
  border-radius:2px;
  color:var(--yh-paper);
  font-size:13px;
  letter-spacing:.06em;
  cursor:pointer;
  margin-left:auto;
}
.yh-navtoggle__bars{display:grid;gap:4px;width:20px}
.yh-navtoggle__bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--yh-gold);
  transition:transform .2s var(--yh-ease),opacity .2s var(--yh-ease);
}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars span:nth-child(2){opacity:0}
.yh-navtoggle[aria-expanded="true"] .yh-navtoggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.yh-navtoggle__label{white-space:nowrap}

/* 主导航 */
.yh-nav{
  display:flex;
  flex:1 1 auto;
  align-items:center;
  justify-content:center;
  gap:clamp(6px,1vw,16px);
}
.yh-nav__list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:2px}
.yh-nav__item{list-style:none}
.yh-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:8px 12px;
  border:1px solid transparent;
  border-radius:2px;
  font-size:15px;
  letter-spacing:.01em;
  color:var(--yh-paper);
  text-decoration:none;
  white-space:nowrap;
  transition:color .18s var(--yh-ease),background-color .18s var(--yh-ease),border-color .18s var(--yh-ease);
}
.yh-nav__link:hover,
.yh-nav__link:focus-visible{
  color:var(--yh-gold);
  background:rgba(127,200,212,.08);
  border-color:rgba(217,164,65,.45);
}
.yh-nav__num{
  font-family:var(--yh-font-num);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--yh-mist);
}
.yh-nav__link[aria-current="page"]{color:var(--yh-gold)}
.yh-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:2px;
  background:linear-gradient(90deg,var(--yh-gold),var(--yh-orange));
}
.yh-nav__link[aria-current="page"] .yh-nav__num{color:var(--yh-orange)}
.yh-nav__foot{display:none}
.yh-nav__sync{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--yh-font-num);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--yh-mist);
}
.yh-nav__cta{width:100%}

/* 状态条 */
.yh-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  padding:6px 12px;
  border:1px solid var(--yh-rule);
  border-radius:999px;
  background:rgba(19,26,46,.66);
  font-size:12.5px;
  color:var(--yh-mist);
  white-space:nowrap;
}
.yh-status__label{letter-spacing:.06em}
.yh-status__times{
  font-family:var(--yh-font-num);
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
  color:var(--yh-paper);
}
.yh-live{
  display:inline-block;
  width:8px;height:8px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--yh-live);
  box-shadow:0 0 0 3px rgba(57,255,158,.16);
  animation:yh-pulse 2.4s ease-in-out infinite;
}
@keyframes yh-pulse{
  0%,100%{box-shadow:0 0 0 2px rgba(57,255,158,.14);opacity:.75}
  50%{box-shadow:0 0 0 6px rgba(57,255,158,.05);opacity:1}
}

.yh-header__cta{flex:0 0 auto;white-space:nowrap}

/* 阅读进度 */
.yh-progress{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  pointer-events:none;
  background:rgba(42,51,80,.5);
}
.yh-progress__bar{
  display:block;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--yh-live),var(--yh-ice) 55%,var(--yh-gold));
  transition:transform .12s linear;
}

/* 页头响应式 */
@media (max-width:1180px){
  .yh-status__label{display:none}
}
@media (max-width:1040px){
  .yh-status{display:none}
}
@media (max-width:960px){
  .yh-header__cta{display:none}
}
@media (max-width:860px){
  :root{--yh-hh:64px}
  .yh-navtoggle{display:inline-flex}
  .yh-brand__tag{display:none}
  .yh-nav{
    position:absolute;
    top:100%;left:0;right:0;
    z-index:3;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    padding:10px var(--yh-gutter) 24px;
    background:linear-gradient(180deg,rgba(19,26,46,.99),rgba(7,11,22,.99));
    border-bottom:1px solid var(--yh-rule);
    box-shadow:0 28px 50px rgba(0,0,0,.55);
    max-height:calc(100dvh - var(--yh-hh));
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-6px);
    transition:opacity .2s var(--yh-ease),transform .22s var(--yh-ease),visibility .22s var(--yh-ease);
  }
  .yh-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .yh-nav__list{flex-direction:column;align-items:stretch;width:100%;gap:0}
  .yh-nav__item{border-bottom:1px solid rgba(42,51,80,.75)}
  .yh-nav__item:last-child{border-bottom:0}
  .yh-nav__link{
    display:flex;
    width:100%;
    justify-content:flex-start;
    padding:14px 4px;
    font-size:16px;
    border:0;
    border-radius:0;
  }
  .yh-nav__link:hover,
  .yh-nav__link:focus-visible{background:rgba(127,200,212,.08);border:0}
  .yh-nav__link[aria-current="page"]::after{left:4px;right:auto;width:24px;bottom:6px}
  .yh-nav__foot{display:grid;gap:12px;padding-top:18px}
}

/* ==========================================================================
   页脚：夜空层
   ========================================================================== */
.yh-footer{
  position:relative;
  overflow:hidden;
  border-top:1px solid var(--yh-rule);
  background:linear-gradient(180deg,var(--yh-ink) 0%,#070B16 62%,#050912 100%);
  color:var(--yh-paper);
}
.yh-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 12% 18%,rgba(127,200,212,.14),transparent 44%),
    radial-gradient(circle at 84% 6%,rgba(217,164,65,.13),transparent 46%),
    repeating-linear-gradient(90deg,rgba(42,51,80,.34) 0 1px,transparent 1px 104px);
}
.yh-footer__slant{
  position:absolute;
  top:0;left:0;right:0;
  height:6px;
  background:linear-gradient(90deg,var(--yh-gold),var(--yh-orange) 42%,var(--yh-ice) 100%);
  clip-path:polygon(0 0,100% 0,100% 42%,0 100%);
  z-index:2;
}
.yh-footer__inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:1.15fr 1.7fr 1fr;
  gap:clamp(24px,4vw,56px);
  max-width:var(--yh-w);
  margin-inline:auto;
  padding:clamp(44px,6vw,76px) var(--yh-gutter) 30px;
}
.yh-footer__brandcol{display:flex;flex-direction:column;gap:12px}
.yh-footer__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:46px;height:46px;
  border:1px solid rgba(217,164,65,.7);
  border-radius:2px;
  background:radial-gradient(circle at 30% 20%,rgba(217,164,65,.3),transparent 62%),var(--yh-ink-2);
}
.yh-footer__mark::before{
  content:"";
  width:19px;height:19px;
  border:1.5px solid var(--yh-ice);
  border-radius:1px;
  transform:rotate(45deg);
}
.yh-footer__mark::after{
  content:"";
  position:absolute;
  width:5px;height:5px;
  border-radius:50%;
  background:var(--yh-live);
  box-shadow:0 0 10px rgba(57,255,158,.8);
}
.yh-footer__name{
  font-family:var(--yh-font-display);
  font-weight:700;
  font-size:17px;
  letter-spacing:-.01em;
  color:var(--yh-paper);
}
.yh-footer__sign{
  font-family:var(--yh-font-editorial);
  font-size:15px;
  line-height:1.75;
  color:var(--yh-mist);
  max-width:22em;
}
.yh-footer__meta{
  display:flex;
  align-items:center;
  gap:8px;
  font-family:var(--yh-font-num);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--yh-mist);
}
.yh-footer__nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2vw,28px);
}
.yh-fcol{min-width:0}
.yh-fcol__title{
  margin-bottom:14px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(42,51,80,.9);
  font-family:var(--yh-font-num);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--yh-gold);
}
.yh-fcol__list{display:grid;gap:9px}
.yh-flink{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:14.5px;
  color:var(--yh-mist);
  text-decoration:none;
  transition:color .18s var(--yh-ease),transform .18s var(--yh-ease);
}
.yh-flink::before{
  content:"";
  width:4px;height:4px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--yh-rule);
  transition:background-color .18s var(--yh-ease);
}
.yh-flink:hover,.yh-flink:focus-visible{color:var(--yh-paper);transform:translateX(3px)}
.yh-flink:hover::before,.yh-flink:focus-visible::before{background:var(--yh-gold)}
.yh-footer__contact{min-width:0}
.yh-contactline{display:grid;gap:3px;padding-bottom:10px}
.yh-contactline__k{
  font-family:var(--yh-font-num);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--yh-ice);
}
.yh-contactline__v{
  font-family:var(--yh-font-num);
  font-size:13.5px;
  letter-spacing:.02em;
  color:var(--yh-paper);
  word-break:break-all;
  line-height:1.5;
}
.yh-copy{
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:4px;
  margin-top:2px;
  padding:3px 10px;
  border:1px solid rgba(127,200,212,.4);
  border-radius:999px;
  background:transparent;
  color:var(--yh-ice);
  font-family:var(--yh-font-num);
  font-size:11px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color .18s var(--yh-ease),color .18s var(--yh-ease),border-color .18s var(--yh-ease);
}
.yh-copy:hover{background:var(--yh-ice);color:var(--yh-ink-3);border-color:var(--yh-ice)}
.yh-copy__status{
  opacity:0;
  color:var(--yh-live);
  font-size:11px;
  letter-spacing:.08em;
  transition:opacity .2s var(--yh-ease);
}
.yh-copy__status[data-visible="true"]{opacity:1}
.yh-copy:hover .yh-copy__status[data-visible="true"]{color:var(--yh-ink-3)}

.yh-footer__base{
  position:relative;
  z-index:1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  max-width:var(--yh-w);
  margin-inline:auto;
  padding:18px var(--yh-gutter) 32px;
  border-top:1px solid rgba(42,51,80,.85);
  font-family:var(--yh-font-num);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--yh-mist);
}
.yh-footer__legal{margin:0}
.yh-footer__seal{
  margin-left:auto;
  padding:3px 10px;
  border:1px solid rgba(42,51,80,.9);
  border-radius:999px;
  color:var(--yh-mist);
}
@media (max-width:960px){
  .yh-footer__inner{grid-template-columns:1fr 1fr}
  .yh-footer__contact{grid-column:span 2}
}
@media (max-width:680px){
  .yh-footer__inner{grid-template-columns:1fr;gap:32px}
  .yh-footer__nav{grid-template-columns:1fr 1fr;gap:24px 16px}
  .yh-footer__contact{grid-column:auto}
  .yh-footer__seal{margin-left:0}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .yh-live{animation:none;box-shadow:0 0 0 3px rgba(57,255,158,.18)}
  .yh-glass:hover,.yh-btn:hover,.yh-flink:hover,.yh-toc__link:hover{transform:none}
}