/* ============================================================
   金沙平台官网 · 共享样式 /assets/site.css
   暖米白纸面 + 深墨蓝结构 + 金沙金索引 + 青绿状态
   ============================================================ */

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}

body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol,fieldset{margin:0;}
ul,ol{padding:0;}
h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit;}
img,svg,video{display:block;max-width:100%;height:auto;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
hr{border:0;height:1px;background:currentColor;opacity:.2;margin:0;}

:root{
  --ink:#0E2238;
  --ink-deep:#081827;
  --sand:#E7D2AE;
  --cream:#FAF4E8;
  --gold:#B98224;
  --gold-deep:#7A4E12;
  --teal:#0B6B5F;
  --slate:#52697C;
  --clay:#A65B3B;

  --line:rgba(14,34,56,.14);
  --line-strong:rgba(14,34,56,.3);
  --line-light:rgba(250,244,232,.14);

  --maxw:1400px;
  --pad-x:clamp(20px,5vw,72px);
  --header-h:82px;
  --ease:cubic-bezier(.2,.7,.25,1);
}

body{
  font-family:"Noto Sans SC","HarmonyOS Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  font-size:17px;
  line-height:1.8;
  color:var(--ink);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body.nav-open{overflow:hidden;}

:focus-visible{
  outline:2px solid var(--teal);
  outline-offset:3px;
}

/* ---------- 排版基元 ---------- */

h1,h2,h3,h4{line-height:1.2;letter-spacing:-.01em;color:var(--ink);}

.display{
  font-size:clamp(48px,8vw,120px);
  font-weight:300;
  line-height:.92;
  letter-spacing:-.035em;
}

.section-title{
  font-size:clamp(30px,4vw,44px);
  font-weight:600;
  line-height:1.16;
  letter-spacing:-.02em;
}

.title-md{
  font-size:clamp(20px,2.2vw,26px);
  font-weight:600;
  line-height:1.35;
}

.lede{
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.85;
  color:var(--slate);
  max-width:56ch;
}

.eyebrow{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:11px;
  letter-spacing:.2em;
  color:var(--gold-deep);
  font-weight:600;
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:28px;
  height:1px;
  background:var(--gold);
  flex:none;
}

.highlight{
  background:linear-gradient(transparent 58%,rgba(185,130,36,.3) 58%);
  padding:0 .12em;
}

.prose{max-width:68ch;}
.prose p{margin-bottom:1.1em;}
.prose p:last-child{margin-bottom:0;}
.prose h2{margin:2em 0 .6em;font-size:clamp(22px,2.4vw,30px);font-weight:600;}
.prose h3{margin:1.6em 0 .5em;font-size:19px;font-weight:600;}
.prose ul,.prose ol{padding-left:1.4em;margin-bottom:1.1em;}
.prose li{margin-bottom:.45em;}
.prose a{color:var(--gold-deep);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px;}
.prose strong{font-weight:700;}

/* ---------- 容器与网格 ---------- */

.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--pad-x);
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2vw,32px);
}
.col-4{grid-column:span 4;}
.col-6{grid-column:span 6;}
.col-8{grid-column:span 8;}

.section{padding-block:clamp(56px,8vw,112px);}
.section--sand{background:var(--sand);}
.section--ink{background:var(--ink-deep);color:rgba(250,244,232,.86);}
.section--ink h2,.section--ink h3{color:var(--cream);}
.section--ink .lede{color:rgba(250,244,232,.68);}
.section--ink .eyebrow{color:var(--sand);}
.section--ink .eyebrow::before{background:var(--gold);}

/* ---------- 按钮 ---------- */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:14px 28px;
  font-size:15px;
  font-weight:600;
  letter-spacing:.03em;
  line-height:1.2;
  border:1px solid transparent;
  border-radius:0;
  transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.btn--primary{background:var(--ink);color:var(--cream);border-color:var(--ink);}
.btn--primary:hover{background:var(--gold-deep);border-color:var(--gold-deep);color:#fff;}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-deep);}
.btn--gold{background:var(--gold);color:#fff;border-color:var(--gold);}
.btn--gold:hover{background:var(--teal);border-color:var(--teal);}
.btn--sm{padding:10px 18px;font-size:13px;}

/* ---------- 面包屑 ---------- */

.breadcrumb{margin-bottom:clamp(20px,3vw,34px);}
.breadcrumb-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--slate);
}
.breadcrumb-item{display:flex;align-items:center;gap:8px;}
.breadcrumb-item + .breadcrumb-item::before{
  content:"/";
  color:var(--gold);
  font-size:11px;
}
.breadcrumb-link{color:var(--slate);transition:color .2s var(--ease);}
.breadcrumb-link:hover{color:var(--gold-deep);}
.breadcrumb-item[aria-current="page"]{color:var(--ink);}

/* ---------- 展签式标签 ---------- */

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 11px;
  font-size:11px;
  letter-spacing:.14em;
  line-height:1.4;
  border:1px solid var(--line-strong);
  border-radius:999px;
  color:var(--slate);
  background:transparent;
}
.tag--gold{border-color:rgba(185,130,36,.5);color:var(--gold-deep);background:rgba(185,130,36,.09);}
.tag--teal{border-color:rgba(11,107,95,.45);color:var(--teal);background:rgba(11,107,95,.08);}
.tag--clay{border-color:rgba(166,91,59,.45);color:var(--clay);background:rgba(166,91,59,.08);}

/* ---------- 图片容器基础规则 ---------- */

.media{
  position:relative;
  display:block;
  width:100%;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(158deg,rgba(185,130,36,.34),rgba(14,34,56,.16) 58%,rgba(11,107,95,.2)),
    var(--sand);
}
.media > img,
.media > picture > img{width:100%;height:100%;object-fit:cover;}
.media--21x9{aspect-ratio:21/9;}
.media--16x9{aspect-ratio:16/9;}
.media--4x3{aspect-ratio:4/3;}
.media--1x1{aspect-ratio:1/1;}

.media-caption{
  margin-top:12px;
  font-size:12px;
  letter-spacing:.08em;
  color:var(--slate);
}

/* ============================================================
   头部
   ============================================================ */

.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:12px 22px;
  font-size:14px;
  letter-spacing:.06em;
  color:var(--cream);
  background:var(--ink);
  border:1px solid var(--gold);
  transform:translateY(-200%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0);}

.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:var(--cream);
  border-bottom:1px solid var(--line-strong);
  box-shadow:0 1px 0 rgba(185,130,36,.32);
}

.header-bar{
  display:flex;
  align-items:center;
  width:100%;
  max-width:var(--maxw);
  min-height:var(--header-h);
  margin-inline:auto;
  padding-inline:var(--pad-x);
  gap:clamp(14px,2.4vw,32px);
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  flex:none;
}

.brand-mark{
  position:relative;
  display:block;
  width:38px;
  height:38px;
  flex:none;
  background:var(--ink);
  overflow:hidden;
}
.brand-mark::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(135deg,transparent 46%,var(--gold) 46%,var(--gold) 54%,transparent 54%);
}

.brand-text{display:flex;flex-direction:column;gap:3px;}
.brand-name{
  font-size:17px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.1;
  color:var(--ink);
}
.brand-sub{
  font-size:11px;
  letter-spacing:.16em;
  line-height:1.2;
  color:var(--slate);
}

.status-chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:none;
  padding:6px 14px;
  font-size:11px;
  letter-spacing:.13em;
  line-height:1.6;
  color:var(--teal);
  border:1px solid rgba(11,107,95,.42);
  border-radius:999px;
  background:rgba(11,107,95,.07);
  white-space:nowrap;
}
.status-dot{
  width:6px;
  height:6px;
  flex:none;
  border-radius:50%;
  background:var(--teal);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:10px 14px;
  font-size:12px;
  letter-spacing:.16em;
  color:var(--ink);
  border:1px solid var(--line-strong);
  background:transparent;
  transition:border-color .25s var(--ease),color .25s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-deep);}
.nav-toggle[aria-expanded="true"]{border-color:var(--teal);color:var(--teal);}
.nav-toggle-bars{display:flex;flex-direction:column;gap:4px;width:18px;}
.nav-toggle-bars span{display:block;height:1.5px;background:currentColor;transition:opacity .2s var(--ease);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0;}

.site-nav{margin-left:auto;}

.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.5vw,26px);
  list-style:none;
  margin:0;
  padding:0;
}

.nav-item{display:flex;}

.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 2px;
  font-size:15px;
  letter-spacing:.03em;
  color:var(--ink);
  transition:color .25s var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:2px;
  height:2px;
  width:0;
  background:var(--gold);
  transition:width .28s var(--ease),background .28s var(--ease);
}
.nav-link:hover{color:var(--gold-deep);}
.nav-link:hover::after,
.nav-link:focus-visible::after{width:100%;}
.nav-link[aria-current="page"]{color:var(--gold-deep);font-weight:600;}
.nav-link[aria-current="page"]::after{width:100%;background:var(--teal);}

.nav-link--cta{
  padding:9px 20px;
  font-weight:600;
  color:var(--gold-deep);
  border:1px solid var(--gold);
  transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.nav-link--cta::after{display:none;}
.nav-link--cta:hover,
.nav-link--cta:focus-visible{
  color:var(--cream);
  background:var(--teal);
  border-color:var(--teal);
}
.nav-link--cta[aria-current="page"]{
  color:var(--cream);
  background:var(--ink);
  border-color:var(--ink);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:transparent;
  pointer-events:none;
}
.scroll-progress span{
  display:block;
  height:100%;
  width:0;
  background:var(--gold);
}

/* ============================================================
   页脚
   ============================================================ */

.site-footer{
  position:relative;
  overflow:hidden;
  color:rgba(250,244,232,.82);
  background:var(--ink-deep);
  border-top:1px solid rgba(185,130,36,.45);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(90deg,rgba(231,210,174,.1) 0 1px,transparent 1px 96px),
    repeating-linear-gradient(0deg,rgba(231,210,174,.07) 0 1px,transparent 1px 96px);
  opacity:.55;
}

.footer-inner{
  position:relative;
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(48px,7vw,96px) var(--pad-x) clamp(24px,3vw,36px);
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1.05fr) minmax(0,1.55fr) minmax(0,.95fr);
  gap:clamp(32px,4vw,72px);
  align-items:start;
}

.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:16px;}
.footer-brand .brand-mark{width:30px;height:30px;background:var(--sand);}
.footer-brand .brand-mark::before{
  background:linear-gradient(135deg,transparent 46%,var(--gold-deep) 46%,var(--gold-deep) 54%,transparent 54%);
}
.footer-brand-name{
  font-size:22px;
  font-weight:700;
  letter-spacing:.05em;
  color:var(--cream);
}
.footer-tagline{
  max-width:34ch;
  font-size:14px;
  line-height:1.9;
  color:rgba(250,244,232,.62);
}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,44px);
}

.footer-col-title{
  margin-bottom:14px;
  font-size:11px;
  font-weight:600;
  letter-spacing:.2em;
  color:var(--gold);
}

.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:2px;
}

.footer-link{
  position:relative;
  display:inline-block;
  padding:6px 0;
  font-size:15px;
  color:rgba(250,244,232,.78);
  transition:color .25s var(--ease);
}
.footer-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:3px;
  width:0;
  height:1px;
  background:var(--gold);
  transition:width .28s var(--ease);
}
.footer-link:hover{color:var(--cream);}
.footer-link:hover::after,
.footer-link:focus-visible::after{width:100%;}

.contact-list{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:14px;
}

.contact-item{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:center;
  gap:4px 12px;
  padding-bottom:12px;
  border-bottom:1px solid rgba(250,244,232,.1);
}
.contact-item--plain{padding-bottom:0;border-bottom:0;}

.contact-label{
  grid-column:1/-1;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--gold);
}

.contact-value{
  font-size:14px;
  line-height:1.7;
  color:rgba(250,244,232,.86);
  word-break:break-word;
}

.copy-btn{
  padding:5px 11px;
  font-size:11px;
  letter-spacing:.1em;
  line-height:1.5;
  color:var(--sand);
  border:1px solid rgba(185,130,36,.55);
  border-radius:999px;
  transition:background .25s var(--ease),border-color .25s var(--ease),color .25s var(--ease);
}
.copy-btn:hover{border-color:var(--teal);color:var(--cream);background:rgba(11,107,95,.4);}
.copy-btn.is-done{border-color:var(--teal);color:#fff;background:rgba(11,107,95,.62);}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  margin-top:clamp(40px,6vw,72px);
  padding-top:22px;
  border-top:1px solid rgba(250,244,232,.14);
  font-size:12px;
  letter-spacing:.1em;
  color:rgba(250,244,232,.5);
}
.footer-copy,.footer-icp{margin:0;}

/* ---------- 显影微交互 ---------- */

html.has-js [data-reveal]{
  opacity:.32;
  transition:opacity .6s var(--ease);
}
html.has-js [data-reveal].is-revealed{opacity:1;}

/* ============================================================
   响应式
   ============================================================ */

@media (max-width:1080px){
  :root{--header-h:68px;}

  .status-chip{display:none;}

  .nav-toggle{display:inline-flex;}

  .site-nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    bottom:0;
    z-index:70;
    margin-left:0;
    padding:clamp(20px,5vw,44px) var(--pad-x) 48px;
    background:var(--ink-deep);
    border-top:1px solid rgba(185,130,36,.4);
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s var(--ease);
  }
  .site-nav[data-open]{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }

  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    counter-reset:nav;
  }
  .nav-item{
    counter-increment:nav;
    display:flex;
    align-items:baseline;
    gap:16px;
    border-bottom:1px solid var(--line-light);
  }
  .nav-item::before{
    content:"0" counter(nav);
    flex:none;
    font-size:12px;
    letter-spacing:.16em;
    color:var(--gold);
    font-variant-numeric:tabular-nums;
  }
  .nav-link{
    flex:1;
    padding:16px 0;
    font-size:clamp(19px,3.6vw,24px);
    letter-spacing:.04em;
    color:rgba(250,244,232,.9);
  }
  .nav-link::after{bottom:8px;}

  .nav-item:last-child{
    margin-top:22px;
    border-bottom:0;
  }
  .nav-item:last-child::before{content:none;}
  .nav-link--cta{
    display:block;
    text-align:center;
    padding:15px 20px;
    color:var(--gold);
    border-color:rgba(185,130,36,.6);
  }
  .nav-link--cta:hover,
  .nav-link--cta:focus-visible{color:var(--cream);}

  .footer-top{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-contact{grid-column:1/-1;}
}

@media (max-width:760px){
  body{font-size:16px;}

  .brand-sub{display:none;}
  .brand-mark{width:32px;height:32px;}
  .brand-name{font-size:16px;}

  .grid-12{grid-template-columns:minmax(0,1fr);}
  .col-4,.col-6,.col-8{grid-column:1/-1;}

  .footer-top{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr);}
  .footer-bottom{justify-content:flex-start;}
}

@media (max-width:420px){
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .nav-toggle-text{display:none;}
}

/* ---------- 无障碍：减少动效 ---------- */

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.has-js [data-reveal]{opacity:1;}
}