:root{
  --yx-blue:#0A4C8C;
  --yx-deep:#062E55;
  --yx-paper:#FBFCFE;
  --yx-ice:#EAF2FA;
  --yx-gold:#D4A017;
  --yx-gold-soft:#F6E7C1;
  --yx-coral:#E85D4A;
  --yx-graphite:#1E2A36;
  --yx-ink-2:#4C5C6C;
  --yx-mist:#D8E0E8;
  --yx-teal:#1F7A7A;
  --yx-font:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --yx-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans Mono CJK SC",monospace;
  --yx-wrap:1240px;
  --yx-gutter:clamp(18px,4vw,48px);
  --yx-radius:6px;
  --yx-radius-lg:14px;
  --yx-shadow-1:0 1px 2px rgba(6,46,85,.06),0 10px 26px -18px rgba(6,46,85,.32);
  --yx-shadow-2:0 20px 46px -26px rgba(6,46,85,.5);
  --yx-ease:cubic-bezier(.22,.7,.3,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--yx-font);
  font-size:16px;
  line-height:1.78;
  color:var(--yx-graphite);
  background:var(--yx-paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.22;letter-spacing:-.01em;color:var(--yx-deep)}
h1{font-size:clamp(2.25rem,4.6vw,3.5rem);line-height:1.14}
h2{font-size:clamp(1.7rem,3vw,2.25rem);line-height:1.25}
h3{font-size:clamp(1.2rem,1.8vw,1.4rem);line-height:1.38}
h4{font-size:1.0625rem;line-height:1.45;letter-spacing:0}
p{margin:0 0 1em}
a{color:var(--yx-blue);text-underline-offset:3px}
a:hover{color:var(--yx-deep)}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit}
[id]{scroll-margin-top:96px}
:where(a,button,summary,[tabindex]):focus-visible{outline:3px solid var(--yx-coral);outline-offset:2px}

/* ---------- 通用排版与工具 ---------- */
.yx-wrap{width:100%;max-width:var(--yx-wrap);margin-inline:auto;padding-inline:var(--yx-gutter)}
.yx-section{padding-block:clamp(40px,6vw,80px)}
.yx-mono{font-family:var(--yx-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.yx-muted{color:var(--yx-ink-2)}
.yx-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--yx-mono);font-size:12px;font-weight:600;
  letter-spacing:.16em;text-transform:uppercase;color:var(--yx-blue);
}
.yx-eyebrow::before{content:"";width:20px;height:2px;background:var(--yx-gold);flex:0 0 auto}
.yx-lede{font-size:clamp(1rem,1.4vw,1.125rem);line-height:1.85;color:var(--yx-ink-2);max-width:64ch}

/* ---------- 按钮 ---------- */
.yx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--yx-radius);
  border:1px solid transparent;background:transparent;
  font-size:15px;font-weight:700;line-height:1.2;text-decoration:none;cursor:pointer;
  transition:transform .16s var(--yx-ease),background-color .16s var(--yx-ease),border-color .16s var(--yx-ease),color .16s var(--yx-ease),box-shadow .16s var(--yx-ease);
}
.yx-btn:hover{transform:translateY(-2px)}
.yx-btn--primary{background:var(--yx-blue);color:#fff;border-color:var(--yx-blue)}
.yx-btn--primary:hover{background:var(--yx-deep);color:#fff}
.yx-btn--accent{background:var(--yx-coral);color:var(--yx-deep);border-color:rgba(232,93,74,.85)}
.yx-btn--accent:hover{box-shadow:0 12px 22px -14px rgba(232,93,74,.95);color:var(--yx-deep)}
.yx-btn--ghost{background:rgba(255,255,255,.72);color:var(--yx-deep);border-color:rgba(10,76,140,.28)}
.yx-btn--ghost:hover{border-color:var(--yx-gold);color:var(--yx-blue)}
.yx-btn--sm{padding:8px 14px;font-size:13.5px}

/* ---------- 面包屑 ---------- */
.yx-breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--yx-ink-2)}
.yx-breadcrumb a{color:var(--yx-blue);text-decoration:none}
.yx-breadcrumb a:hover{text-decoration:underline}
.yx-breadcrumb__sep{font-family:var(--yx-mono);color:var(--yx-mist)}

/* ---------- 网格与画板 ---------- */
.yx-grid--2,.yx-grid--3,.yx-grid--4{display:grid;gap:clamp(16px,2.4vw,28px)}
.yx-grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.yx-grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr))}
.yx-grid--4{grid-template-columns:repeat(auto-fit,minmax(min(100%,210px),1fr))}
.yx-panel{
  position:relative;background:#fff;border:1px solid var(--yx-mist);
  border-radius:var(--yx-radius-lg);padding:clamp(20px,3vw,32px);
  box-shadow:var(--yx-shadow-1);
}
.yx-panel--glass{
  background:rgba(251,252,254,.68);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
  border-color:rgba(216,224,232,.92);
}
.yx-panel--blue{background:var(--yx-blue);border-color:transparent;color:#fff;box-shadow:var(--yx-shadow-2)}
.yx-panel--blue h2,.yx-panel--blue h3,.yx-panel--blue h4{color:#fff}
.yx-card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--yx-mist);border-radius:var(--yx-radius-lg);
  padding:20px;color:inherit;text-decoration:none;
  transition:transform .18s var(--yx-ease),border-color .18s var(--yx-ease),box-shadow .18s var(--yx-ease);
}
.yx-card:hover,.yx-card:focus-visible{
  transform:translateY(-3px);
  border-color:rgba(212,160,23,.75);
  box-shadow:var(--yx-shadow-2);
  color:inherit;
}
.yx-card__meta{font-family:var(--yx-mono);font-size:12px;letter-spacing:.08em;color:var(--yx-blue)}

/* ---------- 标签 ---------- */
.yx-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 9px;border-radius:3px;
  font-family:var(--yx-mono);font-size:12px;font-weight:600;letter-spacing:.03em;
  background:var(--yx-ice);color:var(--yx-blue);border:1px solid rgba(10,76,140,.16);
}
.yx-tag--gold{background:var(--yx-gold-soft);color:#6B5208;border-color:rgba(212,160,23,.55)}
.yx-tag--coral{background:rgba(232,93,74,.14);color:#93301F;border-color:rgba(232,93,74,.45)}
.yx-tag--teal{background:rgba(31,122,122,.12);color:#155959;border-color:rgba(31,122,122,.4)}

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.yx-figure{
  position:relative;display:block;margin:0;overflow:hidden;
  aspect-ratio:16/9;border-radius:var(--yx-radius-lg);
  border:1px solid var(--yx-mist);
  background:
    linear-gradient(135deg,var(--yx-ice) 0%,#fff 52%,var(--yx-gold-soft) 100%);
}
.yx-figure__img{width:100%;height:100%;object-fit:cover;display:block}
.yx-figure--4x3{aspect-ratio:4/3}
.yx-figure--1x1{aspect-ratio:1/1}
.yx-figure--21x9{aspect-ratio:21/9}
.yx-figure--tall{aspect-ratio:3/4}
.yx-figure__caption{margin:8px 0 0;font-size:13px;line-height:1.7;color:var(--yx-ink-2)}

/* ---------- 正文窄栏 ---------- */
.yx-prose{max-width:68ch;font-size:16px;line-height:1.85;color:var(--yx-graphite)}
.yx-prose > * + *{margin-top:1em}
.yx-prose h2,.yx-prose h3{margin-top:1.7em}
.yx-prose ul,.yx-prose ol{padding-left:1.3em;list-style:disc}
.yx-prose ol{list-style:decimal}
.yx-prose li{margin:.35em 0}
.yx-prose blockquote{
  margin:1.4em 0;padding:12px 18px;border-left:3px solid var(--yx-gold);
  background:var(--yx-ice);border-radius:0 var(--yx-radius) var(--yx-radius) 0;
}

/* ---------- 滚动显现 ---------- */
.yx-js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .5s var(--yx-ease),transform .5s var(--yx-ease)}
.yx-js [data-reveal].is-visible{opacity:1;transform:none}

/* ================= 顶部索引条 ================= */
.yx-header{
  position:sticky;top:0;z-index:100;
  background:rgba(251,252,254,.78);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid rgba(30,42,54,.12);
  transition:background-color .2s var(--yx-ease),box-shadow .2s var(--yx-ease),border-color .2s var(--yx-ease);
}
.yx-header[data-stuck="true"]{
  background:rgba(251,252,254,.95);
  border-bottom-color:rgba(212,160,23,.5);
  box-shadow:0 14px 34px -28px rgba(6,46,85,.85);
}
.yx-skip{
  position:absolute;left:var(--yx-gutter);top:10px;z-index:130;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;border-radius:var(--yx-radius);
  background:var(--yx-deep);color:#fff;font-size:14px;font-weight:700;text-decoration:none;
  opacity:0;transform:translateY(-220%);
  transition:opacity .18s var(--yx-ease),transform .18s var(--yx-ease);
}
.yx-skip:focus,.yx-skip:focus-visible{
  opacity:1;transform:translateY(0);
  outline:3px solid var(--yx-coral);outline-offset:2px;color:#fff;
}
.yx-progress{position:absolute;left:0;right:0;bottom:0;height:2px;overflow:hidden;pointer-events:none}
.yx-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--yx-blue) 0%,var(--yx-gold) 58%,var(--yx-coral) 100%);
  transition:transform .12s linear;
}
.yx-header__inner{
  position:relative;
  width:100%;max-width:var(--yx-wrap);margin-inline:auto;
  padding:10px var(--yx-gutter);
  min-height:68px;
  display:flex;align-items:center;gap:clamp(10px,1.6vw,24px);
}

/* 品牌署名 */
.yx-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--yx-deep);flex:0 0 auto}
.yx-brand:hover{color:var(--yx-deep)}
.yx-brand__mark{
  position:relative;flex:0 0 auto;width:30px;height:30px;
  border:2px solid var(--yx-deep);border-radius:3px;
  background:linear-gradient(180deg,transparent 0 6px,var(--yx-gold) 6px 11px,transparent 11px 19px,var(--yx-blue) 19px 24px,transparent 24px);
}
.yx-brand__mark::after{
  content:"";position:absolute;right:-2px;top:-2px;
  width:10px;height:10px;background:var(--yx-coral);
  border-radius:0 3px 0 3px;
}
.yx-brand__text{display:flex;flex-direction:column;line-height:1.06}
.yx-brand__name{font-size:18px;font-weight:800;letter-spacing:.01em}
.yx-brand__sub{font-family:var(--yx-mono);font-size:10px;letter-spacing:.16em;color:var(--yx-blue)}

/* 徽章 */
.yx-header__meta{display:flex;align-items:center;gap:8px;flex:0 1 auto}
.yx-badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  border:1px solid transparent;white-space:nowrap;
  font-size:12px;line-height:1.5;font-weight:500;
}
.yx-badge--version{
  font-family:var(--yx-mono);font-size:11.5px;font-weight:600;letter-spacing:.02em;
  background:var(--yx-gold-soft);color:var(--yx-deep);border-color:rgba(212,160,23,.55);
}
.yx-badge--update{background:rgba(234,242,250,.92);color:var(--yx-blue);border-color:rgba(10,76,140,.18)}
.yx-badge--update::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--yx-teal);flex:0 0 auto}

/* 主导航 */
.yx-nav{margin-inline-start:auto}
.yx-nav__list{display:flex;align-items:center;gap:2px;counter-reset:navi}
.yx-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:8px 10px;border-radius:var(--yx-radius);
  font-size:15px;font-weight:500;color:var(--yx-graphite);
  text-decoration:none;white-space:nowrap;
  transition:color .16s var(--yx-ease),background-color .16s var(--yx-ease),box-shadow .16s var(--yx-ease);
}
.yx-nav__link::before{
  counter-increment:navi;
  content:counter(navi,decimal-leading-zero);
  font-family:var(--yx-mono);font-size:10px;letter-spacing:.04em;
  color:var(--yx-blue);opacity:.55;
}
.yx-nav__link:hover{color:var(--yx-blue);background:var(--yx-ice)}
.yx-nav__link[aria-current="page"]{
  color:var(--yx-deep);background:#fff;
  box-shadow:inset 0 -2px 0 var(--yx-gold);
}
.yx-nav__link[aria-current="page"]::before{opacity:1;color:var(--yx-gold)}

/* 关键入口 */
.yx-header__cta{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:8px;
  padding:9px 16px;border-radius:var(--yx-radius);
  background:var(--yx-coral);border:1px solid rgba(232,93,74,.9);
  color:var(--yx-deep);font-size:14px;font-weight:700;text-decoration:none;
  transition:transform .16s var(--yx-ease),box-shadow .16s var(--yx-ease);
}
.yx-header__cta::after{content:"→";font-family:var(--yx-mono);font-size:13px}
.yx-header__cta:hover{transform:translateY(-2px);color:var(--yx-deep);box-shadow:0 12px 22px -14px rgba(232,93,74,.95)}

/* 移动导航按钮 */
.yx-navtoggle{
  display:none;flex-direction:column;align-items:center;justify-content:center;gap:4px;
  width:44px;height:44px;padding:0;flex:0 0 auto;
  border:1px solid rgba(10,76,140,.22);border-radius:var(--yx-radius);
  background:rgba(255,255,255,.82);color:var(--yx-deep);cursor:pointer;
  transition:border-color .16s var(--yx-ease),background-color .16s var(--yx-ease);
}
.yx-navtoggle:hover{border-color:var(--yx-gold);background:#fff}
.yx-navtoggle__bar{display:block;width:18px;height:2px;border-radius:2px;background:currentColor;transition:transform .2s var(--yx-ease),opacity .16s var(--yx-ease)}
.yx-header[data-open="true"] .yx-navtoggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.yx-header[data-open="true"] .yx-navtoggle__bar:nth-child(2){opacity:0}
.yx-header[data-open="true"] .yx-navtoggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ================= 页脚画板 ================= */
.yx-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(48px,8vw,96px);
  background:var(--yx-deep);color:rgba(251,252,254,.86);
}
.yx-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(45deg,rgba(212,160,23,.10) 0 1px,transparent 1px 20px),
    repeating-linear-gradient(-45deg,rgba(255,255,255,.05) 0 1px,transparent 1px 20px);
}
.yx-footer__inner{
  position:relative;width:100%;max-width:var(--yx-wrap);margin-inline:auto;
  padding:clamp(36px,6vw,68px) var(--yx-gutter) 0;
}
.yx-footer__grid{
  display:grid;grid-template-columns:1.5fr .8fr .8fr 1.15fr;
  gap:clamp(24px,4vw,48px);align-items:start;
}
.yx-footer__brandcol{min-width:0}
.yx-footer__brand{
  display:inline-flex;align-items:center;gap:10px;
  color:#fff;text-decoration:none;font-size:19px;font-weight:800;letter-spacing:.01em;
}
.yx-footer__brand:hover{color:var(--yx-gold)}
.yx-footer__mark{position:relative;flex:0 0 auto;width:26px;height:26px;border:2px solid rgba(212,160,23,.9);border-radius:3px}
.yx-footer__mark::after{content:"";position:absolute;inset:5px;background:var(--yx-gold);border-radius:1px}
.yx-footer__lede{margin:14px 0 0;max-width:36ch;font-size:14.5px;line-height:1.82;color:rgba(251,252,254,.72)}
.yx-footer__tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:16px}
.yx-footer__tag{
  padding:3px 8px;border-radius:3px;
  border:1px solid rgba(255,255,255,.18);
  font-family:var(--yx-mono);font-size:11px;letter-spacing:.04em;color:rgba(251,252,254,.82);
}
.yx-footer__col{display:flex;flex-direction:column;min-width:0}
.yx-footer__title{
  margin:0 0 12px;font-family:var(--yx-mono);
  font-size:12px;font-weight:600;letter-spacing:.18em;color:var(--yx-gold);
}
.yx-footer__list{display:grid;gap:9px}
.yx-footer__link{
  display:inline-block;padding:2px 0;
  color:rgba(251,252,254,.84);font-size:14.5px;text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--yx-ease),border-color .16s var(--yx-ease),transform .16s var(--yx-ease);
}
.yx-footer__link:hover{color:var(--yx-gold);border-bottom-color:rgba(212,160,23,.8);transform:translateX(2px)}
.yx-footer__contact{
  padding:18px;border-radius:var(--yx-radius-lg);
  border:1px solid rgba(255,255,255,.16);
  background:rgba(255,255,255,.07);
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
  min-width:0;
}
.yx-footer__phone{
  margin:0;
  font-family:var(--yx-mono);font-size:clamp(20px,2.4vw,24px);font-weight:600;
  letter-spacing:.04em;color:#fff;font-variant-numeric:tabular-nums;
}
.yx-footer__meta{
  display:grid;gap:4px;margin-top:12px;
  font-size:13px;line-height:1.8;color:rgba(251,252,254,.72);
  overflow-wrap:anywhere;
}
.yx-footer__cta{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;
  padding:8px 14px;border-radius:var(--yx-radius);
  background:var(--yx-gold);color:var(--yx-deep);
  font-size:13.5px;font-weight:700;text-decoration:none;
  transition:transform .16s var(--yx-ease),background-color .16s var(--yx-ease);
}
.yx-footer__cta:hover{background:var(--yx-gold-soft);color:var(--yx-deep);transform:translateY(-2px)}
.yx-footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;margin-top:clamp(28px,5vw,48px);
  padding:18px 0 26px;
  border-top:1px solid rgba(255,255,255,.14);
  font-size:13px;color:rgba(251,252,254,.62);
}
.yx-footer__copy{margin:0}
.yx-footer__icp{margin:0;font-family:var(--yx-mono);font-size:12px;letter-spacing:.02em}
.yx-footer__legal{display:flex;flex-wrap:wrap;gap:6px 18px}
.yx-footer__legal a{
  color:rgba(251,252,254,.78);text-decoration:none;
  border-bottom:1px solid rgba(255,255,255,.22);padding-bottom:1px;
  transition:color .16s var(--yx-ease),border-color .16s var(--yx-ease);
}
.yx-footer__legal a:hover{color:var(--yx-gold);border-bottom-color:var(--yx-gold)}

/* ================= 响应式 ================= */
@media (max-width:1023.98px){
  .yx-navtoggle{display:inline-flex}
  .yx-header__meta{display:none}
  .yx-header__cta{margin-inline-start:auto}
  .yx-nav{
    position:absolute;top:100%;left:0;right:0;margin:0;display:none;
    padding:10px var(--yx-gutter) 22px;
    max-height:calc(100vh - 72px);overflow-y:auto;
    background:rgba(251,252,254,.97);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(212,160,23,.55);
    box-shadow:0 28px 44px -34px rgba(6,46,85,.9);
  }
  .yx-header[data-open="true"] .yx-nav{display:block}
  .yx-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .yx-nav__link{padding:12px 12px;font-size:16px;border:1px solid transparent}
  .yx-nav__link[aria-current="page"]{
    background:#fff;border-color:rgba(212,160,23,.55);
    box-shadow:inset 3px 0 0 var(--yx-gold);
  }
  .yx-footer__grid{grid-template-columns:1fr 1fr}
  .yx-footer__brandcol{grid-column:1 / -1}
}
@media (max-width:600px){
  .yx-header__inner{min-height:60px;gap:8px;padding-block:8px}
  .yx-brand__mark{width:26px;height:26px}
  .yx-brand__name{font-size:16px}
  .yx-brand__sub{display:none}
  .yx-header__cta{font-size:12px;padding:7px 10px;gap:4px}
  .yx-header__cta::after{display:none}
  .yx-navtoggle{width:40px;height:40px}
  .yx-footer__grid{grid-template-columns:1fr}
  .yx-footer__base{flex-direction:column;align-items:flex-start}
  .yx-footer__contact{padding:16px}
}

/* ================= 动效与打印 ================= */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .yx-js [data-reveal]{opacity:1 !important;transform:none !important}
  .yx-progress__bar{transition:none}
  .yx-btn:hover,.yx-card:hover,.yx-card:focus-visible,.yx-header__cta:hover,.yx-footer__cta:hover,.yx-footer__link:hover{transform:none}
}
@media print{
  .yx-header,.yx-footer,.yx-skip,.yx-progress{display:none !important}
  body{background:#fff;color:#000}
  a{color:#000}
}