:root{
  --ink-void:#061024;
  --ink-deep:#0B1B3A;
  --panel:#122A55;
  --line:#1E3A6B;
  --gold:#F5C542;
  --cyan:#3DE0D0;
  --magenta:#FF3D7F;
  --text:#E8EEF9;
  --muted:#9FB0CE;
  --paper:#F3F6FC;
  --paper-ink:#16233D;
  --rail-w:92px;
  --top-h:64px;
  --edge:clamp(16px,4vw,56px);
  --font-sans:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  padding-left:0;
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--text);
  background-color:var(--ink-deep);
  background-image:
    radial-gradient(1200px 620px at 80% 4%,rgba(61,224,208,.10),transparent 68%),
    radial-gradient(900px 520px at 8% 96%,rgba(245,197,66,.07),transparent 70%),
    linear-gradient(rgba(30,58,107,.30) 1px,transparent 1px),
    linear-gradient(90deg,rgba(30,58,107,.30) 1px,transparent 1px);
  background-size:auto,auto,72px 72px,72px 72px;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,h6{margin:0;line-height:1.25;letter-spacing:-.01em;font-weight:700;}
p{margin:0;}
a{color:inherit;text-decoration:none;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg{max-width:100%;}
button{font:inherit;color:inherit;}
strong{color:var(--gold);font-weight:700;}
::selection{background:var(--gold);color:var(--ink-void);}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}
[hidden]{display:none !important;}

/* ---------- 共享容器 ---------- */
.wrap{
  width:100%;
  max-width:1360px;
  margin-inline:auto;
  padding-inline:var(--edge);
}
.prose{max-width:68ch;font-size:16px;line-height:1.75;color:var(--text);}
.prose p + p{margin-top:1.05em;}
.prose h2,.prose h3{margin-top:1.6em;margin-bottom:.6em;}
.reading-panel{
  background:var(--paper);
  color:var(--paper-ink);
  border:1px solid #D6E0F0;
  padding:clamp(20px,3.4vw,52px);
}
.reading-panel .prose{color:var(--paper-ink);}
.reading-panel strong{color:#B4780A;}
.reading-panel a{color:#0B5C63;border-bottom:1px solid rgba(11,92,99,.4);}

.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:24px;}
.span-3{grid-column:span 3;}
.span-4{grid-column:span 4;}
.span-6{grid-column:span 6;}
.span-8{grid-column:span 8;}
.span-12{grid-column:span 12;}

.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
}
.kicker::before{content:"";width:18px;height:1px;background:var(--cyan);}
.rule{height:1px;border:0;margin:0;background:var(--line);}
.section-title{
  font-size:clamp(22px,2.6vw,34px);
  letter-spacing:-.015em;
  font-weight:800;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:0;
  background:var(--gold);
  color:var(--ink-void);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{background:#FFD75E;}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line);}
.btn--ghost:hover{background:rgba(61,224,208,.08);border-color:var(--cyan);color:var(--cyan);}
.btn--cyan{background:var(--cyan);color:var(--ink-void);}
.btn--cyan:hover{background:#63F0E2;}

/* ---------- 标签 ---------- */
.tag{
  display:inline-block;
  padding:3px 9px;
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--muted);
}
.tag--gold{color:var(--gold);border-color:rgba(245,197,66,.5);}
.tag--cyan{color:var(--cyan);border-color:rgba(61,224,208,.5);}
.tag--alert{color:var(--magenta);border-color:rgba(255,61,127,.55);}

/* ---------- 卡片 ---------- */
.card{
  border:1px solid var(--line);
  background:rgba(11,27,58,.72);
  padding:clamp(16px,2vw,26px);
  position:relative;
}
.card--panel{background:var(--panel);}
.card__label{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  margin-bottom:10px;
}

/* ---------- 媒体容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(160deg,#122A55 0%,#0B1B3A 60%,#061024 100%);
  aspect-ratio:16/10;
}
.media > img,
.media > svg,
.media > video{display:block;width:100%;height:100%;object-fit:cover;}
.media--wide{aspect-ratio:21/9;}
.media--square{aspect-ratio:1/1;}
.media--tall{aspect-ratio:3/4;}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin:18px 0 0;}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line);}
.breadcrumb__link{color:var(--muted);transition:color .18s ease;}
.breadcrumb__link:hover{color:var(--cyan);}
.breadcrumb__item[aria-current="page"]{color:var(--gold);}

/* ---------- 筛选 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:14px 0;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.filter-btn{
  padding:7px 14px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--muted);
  font-size:12.5px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.filter-btn:hover{color:var(--text);border-color:#2E5288;}
.filter-btn[aria-pressed="true"]{background:var(--gold);border-color:var(--gold);color:var(--ink-void);font-weight:700;}
[data-filter-item]:not([hidden]){animation:kitFade .2s ease both;}
@keyframes kitFade{from{opacity:0;}to{opacity:1;}}

/* ---------- 入场显现 ---------- */
.reveal{opacity:0;transform:translateY(8px);transition:opacity .5s ease,transform .5s ease;}
.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 滚动进度 ---------- */
.scrollbar{
  position:fixed;
  top:0;left:0;right:0;
  height:2px;
  background:rgba(30,58,107,.55);
  z-index:90;
  pointer-events:none;
}
.scrollbar__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--gold));}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:0;left:50%;
  transform:translate(-50%,-130%);
  z-index:200;
  padding:12px 22px;
  background:var(--gold);
  color:var(--ink-void);
  font-weight:700;
  font-size:14px;
  border:1px solid var(--ink-void);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translate(-50%,0);}

/* ---------- 头部 ---------- */
.site-header{position:sticky;top:0;z-index:50;}

.rail{
  position:fixed;
  inset:0 auto 0 0;
  width:var(--rail-w);
  display:none;
  flex-direction:column;
  align-items:center;
  padding:16px 0 18px;
  background:
    repeating-linear-gradient(180deg,rgba(30,58,107,.4) 0 1px,transparent 1px 48px),
    var(--ink-void);
  border-right:1px solid var(--line);
  z-index:60;
}
.rail__mark{
  display:grid;
  place-items:center;
  width:44px;height:44px;
  border:1px solid var(--gold);
  color:var(--gold);
  font-size:19px;
  font-weight:800;
  letter-spacing:0;
  transition:background-color .2s ease,color .2s ease;
}
.rail__mark:hover{background:var(--gold);color:var(--ink-void);}
.rail__nav{display:flex;flex-direction:column;width:100%;margin-top:26px;gap:1px;}
.rail__link{
  position:relative;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:3px;
  padding:9px 4px;
  color:var(--muted);
  transition:color .18s ease,background-color .18s ease;
}
.rail__link::before{
  content:"";
  position:absolute;
  left:0;top:8px;bottom:8px;
  width:2px;
  background:var(--gold);
  transform:scaleY(0);
  transform-origin:top;
  transition:transform .22s ease;
}
.rail__link:hover{color:var(--text);background:rgba(61,224,208,.07);}
.rail__link:hover::before{transform:scaleY(1);background:var(--cyan);}
.rail__link[aria-current="page"]{color:var(--gold);}
.rail__link[aria-current="page"]::before{transform:scaleY(1);}
.rail__idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--line);
}
.rail__link:hover .rail__idx,
.rail__link[aria-current="page"] .rail__idx{color:var(--cyan);}
.rail__label{font-size:12.5px;letter-spacing:.03em;line-height:1.3;}
.rail__foot{
  margin-top:auto;
  font-family:var(--font-mono);
  font-size:9.5px;
  line-height:1.5;
  letter-spacing:.2em;
  color:var(--line);
  text-align:center;
}

.topbar{
  background:rgba(6,16,36,.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,24px);
  height:var(--top-h);
  padding:0 clamp(12px,2vw,24px);
  max-width:1600px;
  margin-inline:auto;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand__mark{
  display:grid;place-items:center;
  width:34px;height:34px;
  border:1px solid var(--gold);
  color:var(--gold);
  font-size:15px;
  font-weight:800;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:15px;font-weight:800;letter-spacing:.1em;color:var(--text);}
.brand__sub{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.2em;color:var(--muted);text-transform:uppercase;}

.quickbar{
  display:flex;
  align-items:center;
  gap:2px;
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.quickbar::-webkit-scrollbar{display:none;}
.quickbar__link{
  position:relative;
  padding:7px 12px;
  font-size:13px;
  letter-spacing:.04em;
  color:var(--muted);
  white-space:nowrap;
  transition:color .18s ease;
}
.quickbar__link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:2px;
  height:1px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .24s ease;
}
.quickbar__link:hover{color:var(--text);}
.quickbar__link:hover::after{transform:scaleX(1);}
.quickbar__link[aria-current="page"]{color:var(--gold);}
.quickbar__link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold);}

.topbar__meta{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.topbar__coord{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--gold);
  padding:3px 8px;
  border:1px solid rgba(245,197,66,.45);
}
.topbar__ver{font-size:12px;color:var(--muted);letter-spacing:.04em;}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  background:transparent;
  border:1px solid var(--line);
  color:var(--text);
  font-size:13px;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan);}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:15px;height:1px;
  background:currentColor;
  transition:background-color .18s ease;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:15px;height:1px;
  background:currentColor;
  transition:transform .22s ease;
}
.nav-toggle__bars::before{top:-5px;}
.nav-toggle__bars::after{top:5px;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg);}
.nav-toggle__txt{letter-spacing:.08em;}

.drawer{
  position:fixed;
  inset:0 auto 0 0;
  width:min(320px,86vw);
  display:flex;
  flex-direction:column;
  background:var(--ink-void);
  border-right:1px solid var(--line);
  z-index:80;
  transform:translateX(-102%);
  visibility:hidden;
  transition:transform .28s ease,visibility .28s ease;
  overflow-y:auto;
}
.drawer[data-open]{transform:none;visibility:visible;}
.drawer__head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:16px 18px;
  border-bottom:1px solid var(--line);
}
.drawer__title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
}
.drawer__close{
  width:34px;height:34px;
  display:grid;place-items:center;
  background:transparent;
  border:1px solid var(--line);
  color:var(--text);
  font-size:18px;
  line-height:1;
  cursor:pointer;
}
.drawer__close:hover{border-color:var(--gold);color:var(--gold);}
.drawer__nav{display:flex;flex-direction:column;}
.drawer__link{
  padding:14px 18px;
  border-bottom:1px solid rgba(30,58,107,.7);
  font-size:14.5px;
  letter-spacing:.04em;
  color:var(--muted);
  transition:color .18s ease,background-color .18s ease,padding-left .18s ease;
}
.drawer__link:hover,
.drawer__link[aria-current="page"]{color:var(--gold);background:rgba(245,197,66,.06);padding-left:24px;}
.drawer__link--cta{color:var(--cyan);border-bottom:0;}
.drawer__foot{
  margin-top:auto;
  padding:18px;
  border-top:1px solid var(--line);
}
.drawer__hint{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--line);
  margin-bottom:8px;
}
.drawer__scrim{
  position:fixed;
  inset:0;
  background:rgba(6,16,36,.74);
  opacity:0;
  visibility:hidden;
  z-index:70;
  transition:opacity .24s ease,visibility .24s ease;
}
.drawer__scrim[data-open]{opacity:1;visibility:visible;}

.verpin{
  position:fixed;
  right:0;bottom:0;
  z-index:55;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  background:var(--ink-void);
  border:1px solid var(--line);
  border-right:0;
  border-bottom:0;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
  transition:color .18s ease,border-color .18s ease;
}
.verpin:hover{color:var(--text);border-color:var(--gold);}
.verpin__num{color:var(--gold);}
.verpin__txt{letter-spacing:.08em;}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,110px);
  background:var(--ink-void);
  border-top:1px solid var(--line);
  padding:clamp(36px,5vw,68px) var(--edge) 64px;
}
.foot-grid{
  max-width:1360px;
  margin-inline:auto;
  display:grid;
  grid-template-columns:1.35fr 1fr 1fr 1.3fr;
  gap:clamp(20px,3vw,48px);
}
.foot-col{min-width:0;}
.foot-col--brand{
  border-left:2px solid var(--gold);
  padding-left:18px;
}
.foot-brand{
  font-size:19px;
  font-weight:800;
  letter-spacing:.14em;
  color:var(--text);
}
.foot-tagline{
  margin-top:10px;
  font-size:13.5px;
  line-height:1.8;
  color:var(--muted);
  max-width:26ch;
}
.foot-icp{
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--line);
}
.foot-title{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
  padding-bottom:8px;
  border-bottom:1px solid var(--line);
}
.foot-list{display:flex;flex-direction:column;gap:9px;}
.foot-link{
  font-size:13.5px;
  color:var(--muted);
  transition:color .18s ease;
  word-break:break-word;
}
.foot-link:hover{color:var(--gold);}
.foot-contact__row{
  display:flex;
  gap:10px;
  font-size:13px;
  line-height:1.7;
  color:var(--text);
  word-break:break-word;
  margin-bottom:8px;
}
.foot-key{
  flex:0 0 34px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--line);
  padding-top:2px;
}
.foot-note{
  margin-top:12px;
  font-size:12px;
  line-height:1.75;
  color:var(--muted);
  border-left:1px solid var(--line);
  padding-left:12px;
}
.foot-bottom{
  max-width:1360px;
  margin:clamp(28px,4vw,48px) auto 0;
  padding-top:18px;
  border-top:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  align-items:center;
  justify-content:space-between;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}
.foot-copy{margin:0;}
.foot-ver{color:var(--gold);margin:0;}

/* ---------- 响应式 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w);}
  .rail{display:flex;}
  .nav-toggle{display:none;}
  .scrollbar{left:var(--rail-w);}
}
@media (max-width:1023px){
  .grid-12{grid-template-columns:repeat(6,1fr);gap:16px;}
  .span-3,.span-4,.span-6{grid-column:span 3;}
  .span-8,.span-12{grid-column:span 6;}
  .topbar__ver{display:none;}
  .foot-grid{grid-template-columns:1fr 1fr;}
  .foot-col--brand{grid-column:1 / -1;}
}
@media (max-width:639px){
  :root{--top-h:56px;--edge:16px;}
  .grid-12{grid-template-columns:repeat(2,1fr);gap:12px;}
  .span-3,.span-4,.span-6,.span-8,.span-12{grid-column:span 2;}
  .brand__sub{display:none;}
  .topbar__coord{display:none;}
  .topbar__inner{gap:8px;padding:0 12px;}
  .brand__mark{width:30px;height:30px;font-size:13px;}
  .quickbar__link{padding:6px 10px;font-size:12.5px;}
  .verpin{
    left:0;right:0;
    justify-content:center;
    border-left:0;
    border-top:1px solid var(--line);
    padding:6px 10px;
    font-size:11px;
  }
  .foot-grid{grid-template-columns:1fr;gap:28px;}
  .site-footer{padding-bottom:72px;}
  .foot-bottom{flex-direction:column;align-items:flex-start;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .reveal{opacity:1 !important;transform:none !important;}
  [data-filter-item]:not([hidden]){animation:none !important;}
}