/* ==========================================================================
   澳门威斯人游 · 共享站点样式 /assets/site.css
   1 令牌  2 重置与排版  3 布局工具  4 头部  5 页脚  6 通用组件  7 动效与无障碍
   ========================================================================== */

/* 1 令牌 ================================================================= */
:root{
  --ink:#0A1220;
  --ink-raised:#14213A;
  --ink-deep:#050A13;
  --paper:#F3ECDD;
  --paper-shade:#E3D8C0;
  --gold:#C9A24A;
  --gold-light:#EBD08A;
  --violet:#7B4DFF;
  --cyan:#35E0D6;
  --mute:#8892A6;
  --grid:#233150;
  --rose:#E24A6B;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,serif;
  --font-body:Inter,"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --fs-12:12px; --fs-14:14px; --fs-16:16px; --fs-20:20px;
  --fs-28:28px; --fs-44:44px; --fs-72:72px; --fs-96:96px;

  --wrap:1280px; --wrap-prose:720px; --gutter:24px; --header-h:92px;
  --ease:cubic-bezier(.2,.8,.2,1); --dur:200ms;
}
@media (max-width:720px){:root{--gutter:16px;--header-h:86px;}}

/* 2 重置与排版 =========================================================== */
*,*::before,*::after{box-sizing:border-box;}
html{
  -webkit-text-size-adjust:100%;
  background-color:var(--ink);
  scroll-behavior:smooth;
}
body{
  margin:0;
  background-color:transparent;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:var(--fs-16);
  font-weight:400;
  line-height:1.75;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(to right,var(--grid) 1px,transparent 1px),
    linear-gradient(to bottom,var(--grid) 1px,transparent 1px);
  background-size:72px 72px;
  opacity:.5;
}
body::after{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(52% 38% at 82% 6%,rgba(201,162,74,.18),transparent 70%),
    radial-gradient(46% 34% at 8% 88%,rgba(123,77,255,.16),transparent 72%),
    radial-gradient(38% 30% at 50% 52%,rgba(53,224,214,.06),transparent 70%);
}
h1,h2,h3,h4,h5{
  margin:0 0 .5em;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.01em;
  color:var(--paper);
}
h1{font-size:clamp(34px,6vw,var(--fs-72));}
h2{font-size:clamp(26px,3.4vw,var(--fs-44));}
h3{font-size:clamp(20px,2vw,var(--fs-28));}
h4{font-size:var(--fs-20);}
p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}
a{color:var(--gold-light);text-decoration:none;transition:color var(--dur) var(--ease);}
a:hover{color:#fff;}
strong,b{font-weight:600;color:var(--paper);}
img{max-width:100%;}
ul,ol{margin:0 0 1em;padding-left:1.3em;}
button{font:inherit;color:inherit;}
[hidden]{display:none !important;}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em;}
.mute{color:var(--mute);}
.sr-only{
  position:absolute;width:1px;height:1px;margin:-1px;padding:0;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

/* 3 布局工具 ============================================================= */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.wrap--prose{max-width:var(--wrap-prose);}

.section{padding:72px 0;position:relative;}
.section--tight{padding:36px 0;}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:16px 32px;margin-bottom:32px;padding-bottom:16px;
  border-bottom:1px solid var(--grid);
}
.section__kicker{
  display:block;
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.22em;text-transform:uppercase;color:var(--gold);
}
.section__title{
  margin:6px 0 0;
  font-family:var(--font-display);font-weight:800;
  font-size:clamp(24px,3vw,var(--fs-44));line-height:1.15;
}

.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:24px;}
.col-3{grid-column:span 3;}
.col-4{grid-column:span 4;}
.col-6{grid-column:span 6;}
.col-8{grid-column:span 8;}
.col-12{grid-column:span 12;}
@media (max-width:960px){
  .col-3,.col-4{grid-column:span 6;}
  .col-8{grid-column:span 12;}
}
@media (max-width:640px){
  .grid{gap:16px;}
  .col-3,.col-4,.col-6,.col-8{grid-column:span 12;}
}

.divider{border:0;border-top:1px solid var(--grid);margin:48px 0;}
.divider--gold{border-top-color:rgba(201,162,74,.5);}

.prose{max-width:var(--wrap-prose);font-size:var(--fs-16);line-height:1.75;color:#D6DCE7;}
.prose > * + *{margin-top:1em;}
.prose h2{margin-top:1.8em;font-size:var(--fs-28);}
.prose h3{margin-top:1.5em;font-size:var(--fs-20);}
.prose ul,.prose ol{padding-left:1.4em;}
.prose li{margin:.35em 0;}
.prose code{
  font-family:var(--font-mono);font-size:.92em;padding:2px 6px;border-radius:2px;
  background:rgba(53,224,214,.1);color:#9FF3ED;
}
.prose blockquote{
  margin:1.6em 0;padding:14px 20px;border-left:2px solid var(--gold);
  background:rgba(201,162,74,.08);color:#E9E2CE;
}
.prose hr{border:0;border-top:1px solid var(--grid);margin:2.4em 0;}
.prose--paper{color:#1B2436;}
.prose--paper h2,.prose--paper h3{color:#0A1220;}
.prose--paper a{color:#8A5A0B;}
.prose--paper code{background:rgba(10,18,32,.08);color:#0A1220;}
.prose--paper blockquote{background:var(--paper-shade);color:#232C40;border-left-color:#8A5A0B;}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin:0;padding:0;list-style:none;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.06em;color:var(--mute);
}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs li + li::before{content:"/";color:var(--grid);}
.breadcrumbs a{color:var(--mute);}
.breadcrumbs a:hover{color:var(--gold-light);}
.breadcrumbs [aria-current="page"]{color:var(--paper);}

/* 4 头部 ================================================================= */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:200;
  padding:10px 16px;border-radius:2px;
  background:var(--gold);color:#141008;
  font-size:var(--fs-14);font-weight:600;line-height:1;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px;color:#141008;}

.site-header{
  position:sticky;top:0;z-index:80;
  background-color:transparent;
  transition:background-color var(--dur) var(--ease);
}

.status-strip{
  background-color:rgba(5,10,19,.92);
  border-bottom:1px solid var(--grid);
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.04em;
  color:var(--mute);
}
.status-strip__inner{display:flex;align-items:center;gap:20px;height:28px;white-space:nowrap;overflow:hidden;}
.status-strip__item{display:inline-flex;align-items:center;gap:7px;}
.status-strip__item b{color:var(--gold-light);font-weight:600;}
.status-strip__link{margin-left:auto;color:var(--cyan);}
.status-strip__link:hover{color:#fff;text-decoration:underline;}

.nav-bar{position:relative;border-bottom:1px solid transparent;transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease);}
.nav-bar__inner{display:flex;align-items:center;gap:28px;min-height:64px;}
.site-header[data-scrolled] .nav-bar{
  background-color:rgba(10,18,32,.95);
  border-bottom-color:rgba(201,162,74,.55);
  backdrop-filter:blur(10px);
}

.brand{display:flex;align-items:baseline;gap:12px;flex:none;color:var(--paper);}
.brand:hover{color:var(--paper);}
.brand__mark{font-family:var(--font-display);font-weight:900;font-size:22px;letter-spacing:.02em;}
.brand__tag{
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.24em;
  color:var(--gold);padding-left:12px;border-left:1px solid var(--gold);
}

.nav{display:flex;align-items:center;gap:20px;margin-left:auto;}
.nav__list{display:flex;align-items:center;gap:2px;margin:0;padding:0;list-style:none;}
.nav__link{
  position:relative;display:inline-block;padding:8px 12px;
  font-size:var(--fs-14);font-weight:500;letter-spacing:.02em;color:#C7CFDF;
}
.nav__link::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.nav__link:hover{color:var(--gold-light);}
.nav__link:hover::after{transform:scaleX(1);}
.nav__link[aria-current="page"]{color:var(--gold-light);}
.nav__link[aria-current="page"]::after{transform:scaleX(1);background:var(--cyan);}

.nav__actions{display:flex;align-items:center;gap:10px;padding-left:20px;border-left:1px solid var(--grid);}

.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:10px 14px;border:1px solid var(--grid);border-radius:2px;
  background-color:rgba(20,33,58,.6);cursor:pointer;
  font-size:var(--fs-14);font-weight:500;line-height:1;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-light);}
.nav-toggle__bars{position:relative;display:inline-block;width:18px;height:10px;}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:1px;background:var(--gold-light);
  transition:transform var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{bottom:0;}
.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(-4px) rotate(-45deg);}

.scroll-progress{
  position:absolute;left:0;bottom:-1px;z-index:2;height:2px;width:0;
  background:linear-gradient(90deg,var(--violet),var(--cyan) 55%,var(--gold));
  transition:width 120ms linear;
}

@media (max-width:960px){
  .nav-toggle{display:inline-flex;}
  .nav{
    position:absolute;top:100%;left:0;right:0;z-index:70;
    display:block;margin:0;padding:16px var(--gutter) 24px;
    background-color:rgba(10,18,32,.985);
    border-bottom:1px solid rgba(201,162,74,.45);
    box-shadow:0 28px 52px rgba(0,0,0,.55);
    max-height:calc(100vh - var(--header-h));
    overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-8px);
    transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility 0s linear var(--dur);
  }
  .nav[data-open]{opacity:1;visibility:visible;transform:none;transition-delay:0s;}
  .nav__list{flex-direction:column;align-items:stretch;gap:0;}
  .nav__link{display:block;padding:13px 4px;font-size:var(--fs-16);border-bottom:1px solid var(--grid);}
  .nav__link::after{display:none;}
  .nav__link[aria-current="page"]{padding-left:14px;box-shadow:inset 2px 0 0 var(--cyan);}
  .nav__actions{
    flex-direction:column;align-items:stretch;gap:10px;
    margin-top:18px;padding:18px 0 0;border-left:0;border-top:1px solid var(--grid);
  }
  .nav__actions .btn{justify-content:center;}
}
@media (max-width:720px){
  .status-strip__item:nth-child(2){display:none;}
  .brand__tag{display:none;}
}

/* 5 页脚 ================================================================= */
.site-footer{
  position:relative;
  padding:64px 0 28px;
  background:linear-gradient(180deg,rgba(20,33,58,.7),rgba(5,10,19,.96));
  border-top:1px solid var(--grid);
  font-size:var(--fs-14);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gold) 22%,var(--violet) 60%,transparent);
  opacity:.7;
}
.footer__top{
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1fr 1.6fr;
  gap:40px 32px;
}
.footer__brand{max-width:320px;}
.footer__name{
  margin:0 0 6px;
  font-family:var(--font-display);font-weight:900;font-size:var(--fs-28);
  letter-spacing:.02em;color:var(--paper);
}
.footer__tag{
  margin:0 0 16px;
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.24em;color:var(--gold);
}
.footer__col-title{
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:var(--fs-12);font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--mute);
}
.footer__list{display:flex;flex-direction:column;gap:9px;margin:0;padding:0;list-style:none;}
.footer__link{
  position:relative;display:inline-block;
  font-size:var(--fs-14);color:#C6CEDD;
}
.footer__link::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform var(--dur) var(--ease);
}
.footer__link:hover{color:var(--gold-light);}
.footer__link:hover::after{transform:scaleX(1);}
.footer__contact{display:flex;flex-direction:column;gap:14px;}
.footer__contact-item{display:flex;flex-direction:column;gap:2px;}
.footer__label{
  font-family:var(--font-mono);font-size:var(--fs-12);
  letter-spacing:.14em;color:var(--mute);
}
.footer__value{
  display:inline-flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-size:var(--fs-14);color:var(--paper);word-break:break-all;
}
.copy-btn{
  display:inline-flex;align-items:center;
  padding:3px 8px;border:1px solid var(--grid);border-radius:2px;
  background-color:rgba(20,33,58,.7);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--mute);
  cursor:pointer;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.copy-btn:hover{color:var(--cyan);border-color:var(--cyan);}
.copy-btn[data-copied="true"]{color:var(--cyan);border-color:var(--cyan);}
.footer__copy{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 24px;
  margin-top:48px;padding-top:22px;
  border-top:1px solid var(--grid);
}
.footer__legal{display:flex;flex-wrap:wrap;align-items:center;gap:10px 20px;margin:0;padding:0;list-style:none;}
.footer__policy{font-size:var(--fs-12);letter-spacing:.06em;color:var(--mute);}
.footer__signoff{margin:0;font-size:var(--fs-12);letter-spacing:.04em;color:var(--mute);}

@media (max-width:1080px){
  .footer__top{grid-template-columns:1.4fr 1fr 1fr;gap:36px 24px;}
  .footer__brand,.footer__contact{grid-column:span 3;}
  .footer__contact{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px 24px;}
}
@media (max-width:640px){
  .site-footer{padding:48px 0 24px;}
  .footer__top{grid-template-columns:1fr 1fr;gap:28px 20px;}
  .footer__brand,.footer__contact{grid-column:span 2;}
  .footer__contact{grid-template-columns:1fr;}
  .footer__copy{margin-top:32px;}
}

/* 6 通用组件 ============================================================= */
.btn{
  display:inline-flex;align-items:center;gap:.5em;
  padding:11px 18px;border:1px solid var(--gold);border-radius:2px;
  background-color:transparent;color:var(--gold-light);
  font-size:var(--fs-14);font-weight:500;line-height:1;letter-spacing:.04em;
  cursor:pointer;
  transition:background-color var(--dur) var(--ease),color var(--dur) var(--ease),
             border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:hover{color:#fff;border-color:var(--gold-light);transform:translateY(-1px);}
.btn--gold{
  background:linear-gradient(180deg,var(--gold-light),var(--gold));
  border-color:var(--gold-light);color:#1A1206;font-weight:600;
}
.btn--gold:hover{color:#1A1206;background:linear-gradient(180deg,#F5DFA2,var(--gold-light));}
.btn--ghost{border-color:var(--grid);color:var(--paper);background-color:rgba(20,33,58,.55);}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-light);}
.btn--violet{border-color:var(--violet);color:#D9CBFF;background-color:rgba(123,77,255,.16);}
.btn--violet:hover{background-color:rgba(123,77,255,.3);color:#fff;}

.badge{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:36px;height:36px;padding:0 9px;border:1px solid var(--gold);border-radius:2px;
  background-color:rgba(201,162,74,.1);color:var(--gold-light);
  font-family:var(--font-mono);font-size:var(--fs-14);font-weight:600;letter-spacing:.06em;
}
.badge--sm{min-width:28px;height:28px;font-size:var(--fs-12);}
.badge--violet{border-color:var(--violet);background-color:rgba(123,77,255,.16);color:#CBB9FF;}
.badge--cyan{border-color:var(--cyan);background-color:rgba(53,224,214,.12);color:#ADFBF4;}

.tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:4px 10px;border:1px solid var(--grid);border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;color:var(--mute);
}
.tag--gold{border-color:rgba(201,162,74,.6);color:var(--gold-light);}
.tag--violet{border-color:rgba(123,77,255,.6);color:#CBB9FF;}
.tag--cyan{border-color:rgba(53,224,214,.6);color:#ADFBF4;}

.dot{
  display:inline-block;width:8px;height:8px;border-radius:50%;
  background-color:var(--mute);box-shadow:0 0 0 3px rgba(136,146,166,.16);
}
.dot--live{background-color:var(--cyan);box-shadow:0 0 0 3px rgba(53,224,214,.18);animation:pulse 2.4s var(--ease) infinite;}
.dot--warn{background-color:var(--rose);box-shadow:0 0 0 3px rgba(226,74,107,.18);}
@keyframes pulse{0%,100%{opacity:1;}50%{opacity:.4;}}

.panel{
  padding:24px;border:1px solid var(--grid);border-radius:2px;
  background:linear-gradient(180deg,rgba(20,33,58,.85),rgba(10,18,32,.9));
}
.panel--raised{background:var(--ink-raised);}
.panel--violet{border-color:rgba(123,77,255,.55);box-shadow:inset 0 0 0 1px rgba(123,77,255,.12);}
.panel--paper{background:var(--paper);border-color:var(--paper-shade);color:#16203A;}
.panel--paper h2,.panel--paper h3,.panel--paper h4{color:#0A1220;}
.panel--paper a{color:#8A5A0B;}

.card{
  position:relative;display:flex;flex-direction:column;gap:10px;
  padding:20px;border:1px solid var(--grid);border-radius:2px;
  background-color:rgba(20,33,58,.55);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.card:hover{border-color:rgba(201,162,74,.75);background-color:rgba(20,33,58,.9);}
.card::after{
  content:"";position:absolute;top:-1px;right:-1px;width:10px;height:10px;
  border-top:1px solid var(--gold);border-right:1px solid var(--gold);
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.card:hover::after{opacity:1;}
.card__meta{
  display:flex;flex-wrap:wrap;gap:10px;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.08em;color:var(--mute);
}
.card__title{
  margin:0;font-family:var(--font-display);font-weight:700;
  font-size:var(--fs-20);line-height:1.3;color:var(--paper);
}
.card__text{margin:0;font-size:var(--fs-14);line-height:1.7;color:#B6C0D2;}

.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.filter-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 14px;border:1px solid var(--grid);border-radius:2px;
  background-color:rgba(20,33,58,.5);color:#C6CEDD;
  font-size:var(--fs-14);font-weight:500;line-height:1;cursor:pointer;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.filter-btn:hover{border-color:var(--violet);color:#fff;}
.filter-btn[aria-pressed="true"]{
  border-color:var(--violet);background-color:rgba(123,77,255,.24);color:#E6DEFF;
  box-shadow:inset 0 0 0 1px rgba(123,77,255,.35);
}
.filter-btn__count{font-family:var(--font-mono);font-size:11px;color:var(--mute);}
.filter-btn[aria-pressed="true"] .filter-btn__count{color:var(--cyan);}

.input{
  width:100%;padding:11px 14px;border:1px solid var(--grid);border-radius:2px;
  background-color:rgba(5,10,19,.85);color:var(--paper);
  font-family:var(--font-mono);font-size:var(--fs-14);letter-spacing:.06em;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.input::placeholder{color:#5C6880;}
.input:focus{border-color:var(--cyan);outline:none;box-shadow:0 0 0 1px rgba(53,224,214,.35);}

.empty-note{
  padding:24px;border:1px dashed var(--grid);border-radius:2px;
  font-family:var(--font-mono);font-size:var(--fs-14);letter-spacing:.04em;
  color:var(--mute);text-align:center;
}

.data-table{width:100%;border-collapse:collapse;font-size:var(--fs-14);}
.data-table caption{
  padding-bottom:12px;text-align:left;
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.14em;color:var(--mute);
}
.data-table th,.data-table td{
  padding:12px 14px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--grid);
}
.data-table th{
  font-family:var(--font-mono);font-size:var(--fs-12);font-weight:500;
  letter-spacing:.12em;color:var(--gold);border-bottom-color:rgba(201,162,74,.45);
}
.data-table td.num{font-family:var(--font-mono);text-align:right;font-variant-numeric:tabular-nums;}
.data-table tbody tr:nth-child(even){background-color:rgba(20,33,58,.35);}
.data-table--paper{color:#16203A;}
.data-table--paper th{color:#7A5410;border-bottom-color:#CFC3A8;}
.data-table--paper th,.data-table--paper td{border-color:#CFC3A8;}
.data-table--paper tbody tr:nth-child(even){background-color:var(--paper-shade);}

.timeline{
  position:relative;overflow-x:auto;padding:26px 4px 16px;
  border-top:1px solid var(--grid);border-bottom:1px solid var(--grid);
}
.timeline__track{position:relative;display:flex;min-width:max-content;}
.timeline__track::before{
  content:"";position:absolute;left:0;right:0;top:9px;height:1px;background-color:var(--grid);
}
.timeline__node{
  position:relative;flex:0 0 auto;min-width:180px;
  padding:30px 20px 0 0;border:0;background:none;text-align:left;cursor:pointer;
  font-family:var(--font-body);font-size:var(--fs-14);color:#C6CEDD;
}
.timeline__node::before{
  content:"";position:absolute;top:4px;left:0;width:11px;height:11px;
  border:1px solid var(--gold);border-radius:50%;background-color:var(--ink);
  transition:background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.timeline__node:hover{color:var(--gold-light);}
.timeline__node[aria-selected="true"]::before{
  background-color:var(--cyan);border-color:var(--cyan);box-shadow:0 0 0 4px rgba(53,224,214,.16);
}

.image-frame{
  position:relative;display:block;overflow:hidden;border:1px solid var(--grid);border-radius:2px;
  background:
    linear-gradient(135deg,rgba(201,162,74,.16),rgba(123,77,255,.16)),
    radial-gradient(120% 90% at 18% 8%,rgba(53,224,214,.12),transparent 60%),
    var(--ink-raised);
}
.image-frame__media{display:block;width:100%;height:auto;aspect-ratio:16/9;object-fit:cover;}
.image-frame--tall .image-frame__media{aspect-ratio:3/4;}
.image-frame--wide .image-frame__media{aspect-ratio:21/9;}
.image-frame__caption{
  display:block;padding:10px 14px;border-top:1px solid var(--grid);
  font-family:var(--font-mono);font-size:var(--fs-12);letter-spacing:.04em;color:var(--mute);
}

/* 7 动效与无障碍 ========================================================= */
.reveal{
  opacity:0;transform:translateY(12px);
  transition:opacity 240ms var(--ease),transform 240ms var(--ease);
}
.reveal.is-visible{opacity:1;transform:none;}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;}
  .dot--live{animation:none;}
  .reveal{transform:none;transition:opacity 200ms linear;}
  .btn:hover{transform:none;}
  .nav__link::after,.footer__link::after,.card::after{transition:opacity 200ms linear;}
  .scroll-progress{transition:none;}
  .site-header,.nav-bar,.nav{transition-property:opacity,background-color,border-color,visibility;}
}