/* ============================================================
   九博国际 · 东南亚大厅分区  共享样式 /assets/site.css
   1 变量与重置  2 中文排版  3 布局容器  4 通用组件
   5 头部  6 页脚  7 交互状态  8 响应式与动效降级
   ============================================================ */

/* ---------- 1 变量与重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,table,form{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}

:root{
  --ink-deep:#051C16;
  --ink:#07231C;
  --ink-2:#0E3B31;
  --gold:#C8A23C;
  --gold-l:#E6CE86;
  --gold-m:#A8871F;
  --gold-d:#7A6114;
  --red:#B8402E;
  --jade:#3E9C8A;
  --white:#F4F6F1;
  --muted:#9AA79B;
  --line:rgba(200,162,60,.34);
  --line-soft:rgba(200,162,60,.16);
  --wash:rgba(200,162,60,.07);
  --header-h:96px;
  --wrap:1240px;
  --gut:clamp(18px,4vw,44px);
  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(200,162,60,.045) 1px,transparent 1px),
    linear-gradient(90deg,rgba(200,162,60,.045) 1px,transparent 1px);
  background-size:96px 96px;
  background-position:center top;
  color:var(--white);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:.01em;
}

/* ---------- 2 中文排版 ---------- */
h1,h2,h3,h4{font-family:var(--font-serif);font-weight:700;line-height:1.26;letter-spacing:.01em}
h1{font-size:clamp(30px,4.4vw,44px)}
h2{font-size:clamp(23px,3vw,28px)}
h3{font-size:20px}
h4{font-size:17px}
p{max-width:42em;color:var(--white)}
.prose{max-width:42em}
.prose p+p{margin-top:1em}
.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
small,.small{font-size:13px}
strong{font-weight:700;color:var(--gold-l)}
:focus-visible{outline:2px solid var(--gold-l);outline-offset:3px}

/* ---------- 3 布局容器 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gut)}
main{display:block}
#main-content{scroll-margin-top:calc(var(--header-h) + 14px)}
.u-under-header{padding-top:calc(var(--header-h) + clamp(22px,5vw,60px))}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(18px,2.4vw,32px)}
.col-2{grid-column:span 2}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}
.section{padding-block:clamp(36px,5vw,76px);border-top:1px solid var(--line-soft)}
.section-head{
  display:grid;
  grid-template-columns:minmax(96px,3fr) minmax(0,9fr);
  gap:clamp(16px,3vw,40px);
  align-items:end;
  padding-bottom:16px;
  margin-bottom:clamp(22px,3vw,36px);
  border-bottom:1px solid var(--line);
}
.section-head__index{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;color:var(--gold-m);text-transform:uppercase}
.section-head__title{margin:0}
.section-head__title small{display:block;margin-top:8px;font-family:var(--font-sans);font-size:13px;font-weight:400;letter-spacing:.05em;color:var(--muted)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;color:var(--gold)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold)}

/* ---------- 4 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border:1px solid var(--gold);border-radius:0;
  background:transparent;color:var(--gold-l);cursor:pointer;
  font-family:var(--font-sans);font-size:14px;font-weight:500;letter-spacing:.08em;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.btn:hover{background:var(--gold);color:var(--ink);border-color:var(--gold)}
.btn--solid{background:var(--gold);color:var(--ink)}
.btn--solid:hover{background:var(--gold-l);border-color:var(--gold-l)}
.btn--quiet{border-color:var(--line);color:var(--muted)}
.btn--quiet:hover{color:var(--ink)}

.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:0;padding-block:14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--muted)}
.breadcrumbs li{display:flex;align-items:center}
.breadcrumbs li+li::before{content:"/";margin:0 10px;color:var(--gold-d)}
.breadcrumbs a{color:var(--muted);border-bottom:1px solid transparent}
.breadcrumbs a:hover{color:var(--gold-l);border-bottom-color:var(--gold)}

.tag{
  position:relative;display:inline-flex;align-items:center;gap:8px;
  padding:4px 10px 4px 14px;border:1px solid var(--line);border-radius:0;
  background:rgba(7,35,28,.45);color:var(--white);
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.12em;white-space:nowrap;
}
.tag::before{content:"";position:absolute;left:-1px;top:-1px;bottom:-1px;width:3px;background:var(--gold)}
.tag--a::before{background:var(--gold-l)}
.tag--b::before{background:var(--gold-m)}
.tag--c::before{background:var(--gold-d)}
.tag--jade::before{background:var(--jade)}
.tag--live::before{background:var(--red)}

.panel{border:1px solid var(--line);background:linear-gradient(180deg,rgba(14,59,49,.5),rgba(7,35,28,.15))}
.panel__head{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line-soft);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;color:var(--gold)}
.panel__body{padding:clamp(16px,2.4vw,26px)}

.stat{display:flex;flex-direction:column;gap:6px;padding-left:14px;border-left:1px solid var(--line)}
.stat__value{font-family:var(--font-mono);font-size:clamp(20px,2.4vw,28px);line-height:1.1;color:var(--gold-l)}
.stat__label{font-size:12.5px;letter-spacing:.06em;color:var(--muted)}

.table-wrap{overflow-x:auto;border:1px solid var(--line-soft)}
.table{font-size:14.5px;min-width:520px}
.table th,.table td{padding:11px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line-soft)}
.table th{font-family:var(--font-mono);font-size:11.5px;font-weight:500;letter-spacing:.14em;color:var(--muted);border-bottom-color:var(--line)}
.table tbody tr:hover{background:var(--wash)}
.table td:first-child{font-family:var(--font-mono);color:var(--gold-l)}

.media{
  position:relative;display:block;width:100%;overflow:hidden;
  border:1px solid var(--line);
  background:
    repeating-linear-gradient(135deg,rgba(200,162,60,.10) 0 1px,transparent 1px 11px),
    linear-gradient(160deg,#0E3B31 0%,#07231C 62%,#3A2A20 100%);
}
.media::after{content:"";position:absolute;inset:8px;border:1px solid rgba(200,162,60,.18);pointer-events:none}
.media img,.media svg,.media video{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--rings{
  background:
    radial-gradient(circle at 50% 50%,transparent 0 17.6%,rgba(200,162,60,.20) 17.6% 18.2%,transparent 18.2% 33.6%,rgba(200,162,60,.15) 33.6% 34.1%,transparent 34.1% 51.6%,rgba(200,162,60,.11) 51.6% 52%,transparent 52%),
    linear-gradient(160deg,#0E3B31 0%,#07231C 70%);
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;padding:8px 12px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--gold-l);
  background:linear-gradient(180deg,transparent,rgba(7,35,28,.92));
}

.tabs{display:block}
.tablist{display:flex;flex-wrap:wrap;border-bottom:1px solid var(--line)}
.tab{
  position:relative;padding:11px 18px;margin-bottom:-1px;cursor:pointer;border-radius:0;
  border:1px solid transparent;border-bottom:none;background:transparent;
  color:var(--muted);font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;
  transition:color .18s ease,background-color .18s ease;
}
.tab:hover{color:var(--white)}
.tab[aria-selected="true"]{color:var(--gold-l);background:var(--wash);border-color:var(--line)}
.tab[aria-selected="true"]::before{content:"";position:absolute;left:-1px;right:-1px;top:-1px;height:2px;background:var(--gold)}
.tabpanel{padding-top:22px}
.tabpanel[hidden]{display:none}
.tabpanel:focus-visible{outline:1px solid var(--gold);outline-offset:4px}

/* ---------- 5 头部 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background-color:transparent;border-bottom:1px solid transparent;
  transition:background-color .3s ease,border-color .3s ease;
}
.site-header::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,28,22,.92),rgba(5,28,22,.55) 62%,rgba(5,28,22,0));
  transition:opacity .3s ease;
}
.site-header.is-scrolled{background-color:var(--ink);border-bottom-color:var(--line)}
.site-header.is-scrolled::before{opacity:0}

.skip-link{
  position:fixed;top:-72px;left:16px;z-index:200;
  padding:10px 18px;background:var(--gold);color:var(--ink);
  font-size:14px;font-weight:500;letter-spacing:.06em;border-radius:0;
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

.header-rail{border-bottom:1px solid var(--line-soft)}
.rail-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:32px}
.rail-mono{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);white-space:nowrap}
.rail-status{display:inline-flex;align-items:center;color:var(--gold-m)}
.rail-dot{display:inline-block;width:6px;height:6px;margin-right:8px;background:var(--red)}
@media (prefers-reduced-motion:no-preference){
  .rail-dot{animation:railpulse 2.8s ease-in-out infinite}
}
@keyframes railpulse{0%,100%{opacity:1}50%{opacity:.32}}

.header-bar{display:flex;align-items:center;justify-content:space-between;gap:clamp(14px,2.4vw,34px);min-height:64px;padding-block:10px}

.brand{display:flex;align-items:center;gap:12px}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;flex:0 0 38px;
  border:1px solid var(--gold);background:rgba(200,162,60,.09);
  color:var(--gold-l);font-family:var(--font-serif);font-size:19px;font-weight:700;
}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-family:var(--font-serif);font-size:19px;font-weight:700;letter-spacing:.02em;color:var(--white)}
.brand-sub{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.16em;color:var(--gold-m)}

.site-nav{display:flex;align-items:center;gap:clamp(8px,1.6vw,24px)}
.nav-list{display:flex;align-items:center}
.nav-list li{position:relative}
.nav-list li+li::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:1px;height:14px;background:transparent;transition:background-color .3s ease;
}
.site-header.is-scrolled .nav-list li+li::before{background:var(--line)}
.nav-list a{
  position:relative;display:block;padding:10px 14px;white-space:nowrap;
  font-size:14px;font-weight:500;letter-spacing:.06em;color:var(--white);
  transition:color .2s ease;
}
.nav-list a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:var(--gold);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-list a:hover{color:var(--gold-l)}
.nav-list a:hover::after,
.nav-list a:focus-visible::after,
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--gold-l)}
.nav-list a[aria-current="page"]::before{
  content:"";position:absolute;left:2px;top:50%;transform:translateY(-50%);
  width:3px;height:3px;background:var(--red);
}

.nav-cta{
  display:inline-flex;align-items:center;padding:10px 18px;border:1px solid var(--gold);border-radius:0;
  font-size:13.5px;font-weight:500;letter-spacing:.08em;color:var(--gold-l);white-space:nowrap;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease;
}
.nav-cta:hover{background:var(--gold);color:var(--ink);border-color:var(--gold)}

.nav-toggle{
  display:none;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--line);border-radius:0;
  color:var(--white);cursor:pointer;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-l)}
.nav-toggle-lines{position:relative;display:inline-block;width:18px;height:12px;color:currentColor}
.nav-toggle-lines::before,
.nav-toggle-lines::after{
  content:"";position:absolute;left:0;right:0;height:1px;background:currentColor;
  transition:transform .2s ease,top .2s ease,bottom .2s ease;
}
.nav-toggle-lines::before{top:1px}
.nav-toggle-lines::after{bottom:1px}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before{top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::after{bottom:6px;transform:rotate(-45deg)}
.nav-toggle-label{font-family:var(--font-mono)}

.header-progress{
  position:absolute;left:0;bottom:-1px;width:100%;height:2px;
  transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--gold-d),var(--gold) 60%,var(--gold-l));
  opacity:0;transition:opacity .3s ease;
}
.site-header.is-scrolled .header-progress{opacity:1}

/* ---------- 6 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,7vw,100px);
  background-color:var(--ink-deep);
  border-top:1px solid var(--line);
  color:var(--white);
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,.85fr));
  gap:clamp(24px,3.4vw,54px);
  padding-block:clamp(38px,5vw,70px) 32px;
  border-bottom:1px solid var(--line-soft);
}
.footer-mark{display:flex;align-items:center;gap:10px;font-family:var(--font-serif);font-size:20px;font-weight:700;letter-spacing:.02em}
.footer-mark::before{content:"";width:10px;height:10px;flex:0 0 10px;background:var(--gold)}
.footer-summary{margin-top:16px;font-size:14.5px;line-height:1.85;color:var(--muted);max-width:34em}
.footer-mono{
  margin-top:20px;padding-top:14px;border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;color:var(--gold-m);
}
.footer-col-title{
  margin-bottom:14px;font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gold);
}
.footer-list{display:grid;gap:10px}
.footer-list a{font-size:14.5px;color:var(--white);border-bottom:1px solid transparent;padding-bottom:2px;transition:color .2s ease,border-color .2s ease}
.footer-list a:hover{color:var(--gold-l);border-bottom-color:var(--gold)}

.footer-contact{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(16px,2.6vw,40px);
  padding-block:30px;border-bottom:1px solid var(--line-soft);
}
.contact-item{position:relative;padding-left:16px}
.contact-item::before{content:"";position:absolute;left:0;top:2px;bottom:2px;width:2px;background:var(--jade)}
.contact-item--wide{grid-column:1/-1}
.contact-label{display:block;margin-bottom:6px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.2em;color:var(--muted)}
.contact-value{display:block;font-size:14.5px;color:var(--white);word-break:break-word}
.contact-value--note{font-size:13.5px;line-height:1.8;color:var(--muted);max-width:76ch}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 26px;
  padding-block:22px 30px;
}
.legal-line{font-size:12.5px;letter-spacing:.06em;color:var(--muted)}
.legal-mono{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em;color:var(--gold-m)}

/* ---------- 7 交互状态 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(14px);transition:opacity .5s ease,transform .5s ease}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 8 响应式与动效降级 ---------- */
@media (max-width:1040px){
  :root{--header-h:88px}
  .header-bar{min-height:56px;padding-block:12px}
  .nav-toggle{display:inline-flex}
  .js .site-nav{
    position:absolute;top:100%;left:0;right:0;z-index:5;
    display:none;flex-direction:column;align-items:stretch;gap:0;
    padding:10px var(--gut) 24px;
    background:var(--ink-deep);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    max-height:calc(100vh - var(--header-h));overflow-y:auto;
  }
  .js .site-nav[data-open]{display:flex}
  .nav-list{flex-direction:column;align-items:stretch;width:100%}
  .nav-list li+li::before{display:none}
  .nav-list a{padding:15px 2px;font-size:15px;border-bottom:1px solid var(--line-soft)}
  .nav-list a::after{left:2px;right:auto;width:24px;bottom:9px}
  .nav-list a[aria-current="page"]::before{left:-10px}
  .nav-cta{margin-top:20px;justify-content:center}
  .media--tall{aspect-ratio:4/3}
}

@media (max-width:900px){
  .col-2,.col-3,.col-4,.col-5{grid-column:span 6}
  .col-6{grid-column:span 6}
  .col-7,.col-8,.col-9{grid-column:span 12}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1/-1}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:600px){
  body{font-size:16px}
  .col-2,.col-3,.col-4,.col-5,.col-6{grid-column:span 12}
  .section-head{grid-template-columns:1fr}
  .rail-status{display:none}
  .footer-top{grid-template-columns:1fr}
  .footer-contact{grid-template-columns:1fr}
  .footer-legal{justify-content: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}
  .js [data-reveal]{opacity:1;transform:none}
  .rail-dot{animation:none}
}