:root{
  --ink-night:#061A24;
  --plateau:#0C3B4C;
  --lake:#082833;
  --ice:#D6F0F7;
  --glass:rgba(214,240,247,.12);
  --glass-line:rgba(214,240,247,.22);
  --glass-soft:rgba(214,240,247,.07);
  --lime:#B6FF4B;
  --lime-dim:rgba(182,255,75,.16);
  --amber:#FF9B54;
  --paper:#EAF6F8;
  --ink:#06232C;
  --mist:#7DA7B4;
  --white:#FFFFFF;

  --font-display:"HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --fs-1:12px;
  --fs-2:14px;
  --fs-3:clamp(15px,1.05vw,17px);
  --fs-4:clamp(17px,1.4vw,20px);
  --fs-5:clamp(20px,2.1vw,26px);
  --fs-6:clamp(26px,3.2vw,38px);
  --fs-7:clamp(32px,4.4vw,54px);
  --fs-8:clamp(40px,6.4vw,78px);
  --fs-9:clamp(52px,9vw,112px);

  --lh-body:1.75;
  --shell-max:1360px;
  --shell-wide:1620px;
  --pad-x:clamp(16px,4vw,48px);
  --fast:150ms;
}

*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:110px;
}
body{
  margin:0;
  background-color:var(--ink-night);
  background-image:
    linear-gradient(rgba(125,167,180,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(125,167,180,.055) 1px,transparent 1px);
  background-size:64px 64px;
  background-attachment:fixed;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:var(--fs-3);
  font-weight:400;
  line-height:var(--lh-body);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video,canvas{display:block;max-width:100%}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.03em;
  color:var(--white);
}
p,figure,blockquote,dl,dd{margin:0}
a{color:inherit;text-decoration:none}
strong,b{font-weight:700;color:var(--white)}
small{font-size:var(--fs-1)}
button{font:inherit;color:inherit;background:none;border:0}
:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
  border-radius:2px;
}
::selection{background:var(--lime);color:var(--ink)}

/* ---------- 布局骨架 ---------- */
.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--pad-x);
}
.shell--wide{max-width:var(--shell-wide)}
.narrow{max-width:72ch;margin-inline:auto}
.section{padding-block:clamp(36px,6vw,88px)}
.prose{max-width:42em;color:rgba(214,240,247,.86)}
.prose p + p{margin-top:1em}
.prose h2{margin-top:1.6em;font-size:var(--fs-5)}
.prose h3{margin-top:1.4em;font-size:var(--fs-4)}
.divider{height:1px;border:0;margin:clamp(28px,4vw,56px) 0;background:var(--glass-line)}
.muted{color:var(--mist)}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--12{display:grid;gap:clamp(16px,2.4vw,32px);grid-template-columns:repeat(4,minmax(0,1fr))}
.span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 4}
@media (min-width:900px){
  .grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 7}
  .span-8{grid-column:span 8}
  .span-9{grid-column:span 9}
  .span-12{grid-column:span 12}
}

/* ---------- 标题与索引 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:var(--fs-1);
  letter-spacing:.1em;
  text-transform:uppercase;
  color:var(--mist);
}
.eyebrow::before{
  content:"";
  width:18px;
  height:1px;
  background:var(--lime);
}
.section-head{
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-bottom:clamp(20px,3vw,36px);
}
@media (min-width:760px){
  .section-head{flex-direction:row;align-items:flex-end;justify-content:space-between;gap:32px}
}
.section-title{
  margin:0;
  font-family:var(--font-display);
  font-size:var(--fs-6);
  font-weight:800;
  letter-spacing:-.03em;
  line-height:1.1;
  color:var(--white);
}
.section-kicker{
  font-size:var(--fs-2);
  line-height:1.7;
  color:var(--mist);
  max-width:38ch;
}

/* ---------- 按钮与链接 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  line-height:1;
  letter-spacing:.01em;
  cursor:pointer;
  text-decoration:none;
  transition:background-color var(--fast) ease,color var(--fast) ease,border-color var(--fast) ease,box-shadow var(--fast) ease;
}
.btn--lime{background:var(--lime);color:var(--ink)}
.btn--lime:hover{background:#C9FF7A;box-shadow:0 0 0 3px rgba(182,255,75,.18)}
.btn--ghost{background:transparent;color:var(--ice);border-color:var(--glass-line)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn--amber{background:var(--amber);color:var(--ink)}
.btn--amber:hover{background:#FFB47C}
.btn:active{transform:translateY(1px)}
.link-underline{
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:4px;
  text-decoration-color:rgba(125,167,180,.65);
  transition:color var(--fast) ease,text-decoration-color var(--fast) ease;
}
.link-underline:hover{color:var(--lime);text-decoration-color:var(--lime)}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:18px 4px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__link{
  font-family:var(--font-mono);
  font-size:var(--fs-1);
  letter-spacing:.06em;
  color:var(--mist);
  transition:color var(--fast) ease;
}
.breadcrumb__link:hover{color:var(--lime)}
.breadcrumb__sep{color:rgba(125,167,180,.5);font-family:var(--font-mono);font-size:11px}
.breadcrumb__current{
  font-family:var(--font-mono);
  font-size:var(--fs-1);
  letter-spacing:.06em;
  color:var(--ice);
}

/* ---------- 头部 ---------- */
.skip-link{
  position:fixed;
  left:12px;
  top:-90px;
  z-index:200;
  padding:10px 18px;
  border-radius:2px;
  background:var(--lime);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  transition:top var(--fast) ease;
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:linear-gradient(180deg,rgba(6,26,36,.96),rgba(6,26,36,.74));
  -webkit-backdrop-filter:blur(14px) saturate(120%);
  backdrop-filter:blur(14px) saturate(120%);
  border-bottom:1px solid var(--glass-line);
  color:var(--ice);
}
.header-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:clamp(10px,2vw,24px);
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:clamp(10px,1.4vw,16px) var(--pad-x);
}
.brand-masthead{
  display:flex;
  align-items:center;
  gap:12px;
  margin-right:auto;
  padding:2px 0;
  color:var(--ice);
}
.brand-mark{
  position:relative;
  flex:0 0 auto;
  width:26px;
  height:26px;
  border:1px solid rgba(214,240,247,.42);
  background:linear-gradient(150deg,rgba(214,240,247,.16),transparent 62%);
}
.brand-mark::before{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:3px;
  background:var(--lime);
}
.brand-mark::after{
  content:"";
  position:absolute;
  right:-4px;top:-4px;
  width:8px;height:8px;
  background:var(--amber);
}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{
  font-family:var(--font-display);
  font-size:clamp(16px,1.6vw,19px);
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--white);
  transition:color var(--fast) ease;
}
.brand-meta{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mist);
}
.brand-masthead:hover .brand-name{color:var(--lime)}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 13px;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:var(--glass);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:var(--fs-1);
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--fast) ease,color var(--fast) ease,background-color var(--fast) ease;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle-bar{
  position:relative;
  display:block;
  width:16px;
  height:1.5px;
  background:currentColor;
  transition:background-color var(--fast) ease;
}
.nav-toggle-bar::before{
  content:"";
  position:absolute;
  left:0;
  top:-5px;
  width:16px;
  height:1.5px;
  background:currentColor;
}
.site-header[data-open] .nav-toggle{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.site-header[data-open] .nav-toggle-bar{background:transparent}
.site-header[data-open] .nav-toggle-bar::before{top:0;transform:rotate(45deg);background:currentColor}
.site-header[data-open] .nav-toggle-bar::after{
  content:"";
  position:absolute;
  left:0;top:0;
  width:16px;height:1.5px;
  background:currentColor;
  transform:rotate(-45deg);
}

.site-nav{display:none;width:100%}
.site-header[data-open] .site-nav{
  display:block;
  margin-top:6px;
  padding-top:8px;
  border-top:1px solid var(--glass-line);
}
.site-nav .nav-list{display:flex;flex-direction:column}
.site-nav .nav-link{
  display:flex;
  align-items:baseline;
  gap:10px;
  width:100%;
  padding:12px 4px;
  border-bottom:1px solid rgba(214,240,247,.08);
  font-size:var(--fs-3);
  color:var(--ice);
  transition:color var(--fast) ease,border-color var(--fast) ease;
}
.nav-num{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--mist);
  transition:color var(--fast) ease;
}
.nav-text{letter-spacing:-.01em}
.nav-link:hover{color:var(--lime);border-bottom-color:rgba(182,255,75,.5)}
.nav-link:hover .nav-num{color:var(--lime)}
.nav-link[aria-current="page"]{color:var(--white);border-bottom-color:var(--lime)}
.nav-link[aria-current="page"] .nav-num{color:var(--lime)}
.nav-cta{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin-top:12px;
  padding:12px 18px;
  border-radius:2px;
  background:var(--lime);
  color:var(--ink);
  font-size:var(--fs-2);
  font-weight:700;
  letter-spacing:.02em;
  transition:background-color var(--fast) ease,box-shadow var(--fast) ease;
}
.nav-cta:hover{background:#C9FF7A;box-shadow:0 0 0 3px rgba(182,255,75,.2)}

@media (min-width:960px){
  .nav-toggle{display:none}
  .site-nav,.site-header[data-open] .site-nav{
    display:flex;
    align-items:center;
    justify-content:flex-end;
    gap:clamp(12px,1.8vw,26px);
    width:auto;
    margin-top:0;
    padding-top:0;
    border-top:0;
  }
  .site-nav .nav-list{flex-direction:row;align-items:center;gap:clamp(10px,1.6vw,22px)}
  .site-nav .nav-link{
    width:auto;
    padding:8px 2px;
    border-bottom:1px solid transparent;
    font-size:var(--fs-2);
  }
  .nav-cta{margin-top:0;padding:10px 16px;font-size:13px;white-space:nowrap}
}

.scroll-meter{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(214,240,247,.08);
  pointer-events:none;
}
.scroll-meter__fill{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime),var(--amber));
}

.header-export{
  position:fixed;
  right:clamp(12px,2.5vw,30px);
  bottom:clamp(12px,2.5vw,30px);
  z-index:90;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 16px;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:rgba(12,59,76,.86);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:var(--fs-1);
  letter-spacing:.04em;
  transition:background-color var(--fast) ease,color var(--fast) ease,border-color var(--fast) ease;
}
.export-dot{
  width:7px;height:7px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 0 3px rgba(182,255,75,.16);
  transition:background-color var(--fast) ease,box-shadow var(--fast) ease;
}
.export-label{white-space:nowrap}
.header-export:hover{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.header-export:hover .export-dot{background:var(--ink);box-shadow:0 0 0 3px rgba(6,35,44,.18)}
@media (max-width:600px){
  .header-export{padding:8px 12px;font-size:11px;gap:6px}
  .export-dot{width:6px;height:6px}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,120px);
  background:linear-gradient(180deg,var(--lake),#061A24 92%);
  color:var(--ice);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,var(--lime),rgba(182,255,75,0) 62%);
}
.footer-inner{
  display:grid;
  gap:clamp(32px,5vw,64px);
  grid-template-columns:minmax(0,1fr);
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:clamp(40px,6vw,76px) var(--pad-x) clamp(28px,4vw,48px);
}
@media (min-width:900px){
  .footer-inner{grid-template-columns:minmax(0,1.05fr) minmax(0,1.5fr)}
}
.footer-brand{display:block}
.footer-identity{
  font-family:var(--font-display);
  font-size:var(--fs-5);
  font-weight:800;
  letter-spacing:-.03em;
  color:var(--white);
}
.footer-sub{
  margin-top:6px;
  font-family:var(--font-mono);
  font-size:var(--fs-1);
  letter-spacing:.08em;
  color:var(--mist);
}
.footer-note{
  margin-top:18px;
  max-width:34ch;
  font-size:14px;
  line-height:1.8;
  color:rgba(214,240,247,.78);
}
.footer-contact{
  display:grid;
  gap:10px;
  margin-top:22px;
  padding:16px 18px;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:var(--glass-soft);
}
.footer-contact__row{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 12px;
  font-size:14px;
  line-height:1.7;
}
.footer-contact__key{
  flex:0 0 auto;
  min-width:34px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--lime);
}
.footer-contact__val{
  color:var(--ice);
  overflow-wrap:anywhere;
}
.copy-mail{
  margin-left:auto;
  padding:4px 10px;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:transparent;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:color var(--fast) ease,border-color var(--fast) ease,background-color var(--fast) ease;
}
.copy-mail:hover{color:var(--ink);background:var(--lime);border-color:var(--lime)}
.copy-mail[data-copied]{color:var(--lime);border-color:var(--lime);background:rgba(182,255,75,.1)}
.copy-mail[data-copied]:hover{color:var(--ink);background:var(--lime)}
.footer-service{
  margin-top:18px;
  max-width:42ch;
  font-size:12px;
  line-height:1.8;
  color:rgba(125,167,180,.92);
}
.footer-cols{
  display:grid;
  gap:clamp(24px,4vw,40px);
  grid-template-columns:minmax(0,1fr);
}
@media (min-width:560px){
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}
.footer-col__title{
  display:flex;
  align-items:baseline;
  gap:8px;
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--glass-line);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  color:var(--ice);
}
.footer-col__num{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--lime);
}
.footer-links{display:grid;gap:10px}
.footer-link{
  display:inline-block;
  padding-block:1px;
  font-size:14px;
  color:rgba(214,240,247,.78);
  border-bottom:1px solid transparent;
  transition:color var(--fast) ease,border-color var(--fast) ease;
}
.footer-link:hover{color:var(--lime);border-bottom-color:var(--lime)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:18px var(--pad-x) 26px;
  border-top:1px solid rgba(214,240,247,.1);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.04em;
  color:var(--mist);
}
.footer-legal{color:var(--mist)}
.footer-copy{color:rgba(214,240,247,.55)}

/* ---------- 卡片与数据 ---------- */
.card{
  padding:clamp(18px,2.6vw,30px);
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:rgba(12,59,76,.55);
}
.card--paper{
  background:var(--paper);
  color:var(--ink);
  border-color:transparent;
}
.card--paper h2,.card--paper h3,.card--paper h4,.card--paper strong{color:var(--ink)}
.card--paper .muted{color:#4C6B74}
.card--outline{background:transparent}
.slant-card{
  position:relative;
  padding:clamp(16px,2.4vw,26px);
  border:1px solid var(--glass-line);
  background:rgba(12,59,76,.72);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 20px),0 100%);
  transition:background-color var(--fast) ease,border-color var(--fast) ease;
}
.slant-card:hover{background:rgba(12,59,76,.92);border-color:rgba(182,255,75,.5)}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--glass-line);
  border-radius:999px;
  background:var(--glass);
  color:var(--ice);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.06em;
  line-height:1.5;
}
.tag--lime{background:var(--lime);color:var(--ink);border-color:var(--lime)}
.tag--amber{background:rgba(255,155,84,.16);color:var(--amber);border-color:rgba(255,155,84,.42)}
.tag--ice{background:rgba(214,240,247,.16);color:var(--ice)}
.stat{display:grid;gap:4px}
.stat__value{
  font-family:var(--font-mono);
  font-size:clamp(24px,3vw,38px);
  font-weight:700;
  letter-spacing:-.02em;
  line-height:1.1;
  color:var(--lime);
}
.stat__label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}
.meta-list{display:grid;gap:10px}
.meta-list__row{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:6px 16px;
  padding-bottom:8px;
  border-bottom:1px dashed rgba(214,240,247,.14);
}
.meta-list__key{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--mist);
}
.meta-list__val{color:var(--ice);font-size:14px}
.table-scroll{
  overflow-x:auto;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:var(--paper);
}
.data-table{
  width:100%;
  border-collapse:collapse;
  color:var(--ink);
  font-size:14px;
  line-height:1.65;
}
.data-table th,.data-table td{
  padding:12px 14px;
  text-align:left;
  border-bottom:1px solid rgba(6,35,44,.12);
  vertical-align:top;
}
.data-table thead th{
  background:rgba(6,35,44,.07);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  font-weight:600;
  color:#0C3B4C;
  white-space:nowrap;
}
.data-table tbody tr:last-child td{border-bottom:0}

/* ---------- 折叠与时间轴 ---------- */
.acc{
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:rgba(8,40,51,.62);
}
.acc + .acc{margin-top:10px}
.acc__summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:16px 18px;
  font-size:var(--fs-3);
  font-weight:600;
  color:var(--ice);
  cursor:pointer;
  list-style:none;
}
.acc__summary::-webkit-details-marker{display:none}
.acc__summary::after{
  content:"+";
  flex:0 0 auto;
  font-family:var(--font-mono);
  font-size:18px;
  line-height:1;
  color:var(--lime);
}
.acc[open] .acc__summary::after{content:"–"}
.acc[open] .acc__summary{border-bottom:1px solid var(--glass-line)}
.acc__body{
  padding:16px 18px;
  font-size:14px;
  line-height:1.8;
  color:rgba(214,240,247,.82);
}
.log-list{
  position:relative;
  display:grid;
  gap:clamp(18px,2.6vw,30px);
  padding-left:24px;
}
.log-list::before{
  content:"";
  position:absolute;
  left:5px;
  top:6px;
  bottom:6px;
  width:1px;
  background:linear-gradient(180deg,var(--lime),rgba(125,167,180,.18));
}
.log-item{position:relative}
.log-item::before{
  content:"";
  position:absolute;
  left:-24px;
  top:7px;
  width:11px;
  height:11px;
  border:2px solid var(--lime);
  border-radius:50%;
  background:var(--ink-night);
}
.log-item__time{
  display:block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--mist);
}
.log-item__title{
  margin-top:4px;
  font-family:var(--font-display);
  font-size:var(--fs-4);
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--white);
}
.log-item__body{
  margin-top:6px;
  font-size:14px;
  line-height:1.8;
  color:rgba(214,240,247,.78);
}

/* ---------- 目录 ---------- */
.toc{
  padding:18px;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:rgba(8,40,51,.55);
}
.toc__title{
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--mist);
}
.toc__list{display:grid;gap:2px}
.toc__link{
  display:block;
  padding:7px 10px;
  border-left:2px solid transparent;
  font-size:14px;
  line-height:1.6;
  color:rgba(214,240,247,.8);
  transition:color var(--fast) ease,border-color var(--fast) ease,background-color var(--fast) ease;
}
.toc__link:hover{color:var(--ice);border-left-color:var(--glass-line);background:rgba(214,240,247,.06)}
.toc__link[aria-current="true"]{color:var(--lime);border-left-color:var(--lime);background:rgba(182,255,75,.08)}

/* ---------- 图片容器与装饰 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 9;
  border:1px solid var(--glass-line);
  border-radius:2px;
  background:linear-gradient(150deg,var(--plateau),var(--lake) 70%);
}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  object-position:center;
}
.media-frame__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:14px 16px;
  background:linear-gradient(180deg,rgba(6,26,36,0),rgba(6,26,36,.86));
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:var(--ice);
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--slant{clip-path:polygon(0 0,100% 0,100% calc(100% - 24px),0 100%)}
.grid-texture{
  background-image:
    linear-gradient(rgba(125,167,180,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(125,167,180,.09) 1px,transparent 1px);
  background-size:40px 40px;
}
.field-line{position:relative}
.field-line::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:1px;
  background:linear-gradient(90deg,rgba(182,255,75,0),rgba(182,255,75,.55),rgba(182,255,75,0));
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .btn:active{transform:none}
}