/* ==========================================================================
   美高梅品牌 · 共享样式 / assets/site.css
   深墨蓝底 · 暖金强调 · 大圆角 Bento 骨架
   ========================================================================== */

:root{
  /* 色板 */
  --ink-900:#0B1B2B;
  --ink-800:#0E2233;
  --ink-700:#12304A;
  --ink-600:#1C4566;
  --gold:#C8A24A;
  --gold-hi:#E8C77A;
  --paper:#F4F1EA;
  --copper:#8A6A47;
  --slate:#7C8FA3;
  --mist:#D7E1EA;
  --teal:#3F7F7A;

  /* 尺度 */
  --shell:1200px;
  --gutter:clamp(18px,4vw,56px);
  --radius-xl:32px;
  --radius-lg:26px;
  --radius-md:20px;
  --radius-sm:14px;
  --measure:40em;

  /* 动效 */
  --ease:cubic-bezier(0.22,0.61,0.36,1);
  --dur-fast:180ms;
  --dur-slow:400ms;

  /* 字体 */
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",Georgia,"Times New Roman",serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
}

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

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

body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  color:var(--paper);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(120% 70% at 12% 0%, rgba(28,69,102,.55) 0%, rgba(11,27,43,0) 62%),
    radial-gradient(90% 60% at 100% 8%, rgba(200,162,74,.07) 0%, rgba(11,27,43,0) 58%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.15;
  letter-spacing:-0.01em;
  margin:0 0 .5em;
}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

a{color:inherit;}

img,svg,video{max-width:100%;}

ul,ol{margin:0;padding:0;}

button,input{font:inherit;color:inherit;}

[hidden]{display:none !important;}

[id]{scroll-margin-top:140px;}

:focus-visible{
  outline:2px solid var(--gold-hi);
  outline-offset:3px;
  border-radius:6px;
}

/* ---------- 基础排版工具 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.visually-hidden{
  position:absolute !important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

.section{padding-block:clamp(56px,8vw,110px);}
.section--tight{padding-block:clamp(34px,5vw,64px);}

.prose{
  max-width:var(--measure);
  font-size:16px;
  line-height:1.85;
}
.prose h2,.prose h3{font-size:clamp(20px,2.2vw,28px);margin-top:1.6em;}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.2em;}
.prose li{margin-bottom:.4em;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-size:12px;
  font-weight:500;
  letter-spacing:.24em;
  color:var(--gold);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:26px;height:1px;
  background:currentColor;
  opacity:.75;
}

.section-title{
  font-size:clamp(26px,3.2vw,40px);
  margin-bottom:.45em;
}
.section-title--xl{font-size:clamp(34px,5vw,56px);}

.lede{
  max-width:var(--measure);
  font-size:17px;
  line-height:1.85;
  color:rgba(244,241,234,.82);
}

.num,[data-year],time{
  font-family:var(--font-display);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}

.surface-light{background:var(--paper);color:var(--ink-900);}
.surface-mist{background:var(--mist);color:var(--ink-900);}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:9px;
  padding:13px 26px;
  border-radius:999px;
  border:1px solid transparent;
  font-size:15px;
  font-weight:500;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:transform var(--dur-fast) var(--ease),
             background-color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             box-shadow var(--dur-fast) var(--ease);
}
.btn--gold{
  background-image:linear-gradient(160deg,var(--gold-hi),var(--gold));
  color:#1A1206;
  box-shadow:0 10px 26px rgba(200,162,74,.2);
}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 16px 34px rgba(200,162,74,.3);}
.btn--ghost{
  border-color:rgba(200,162,74,.5);
  color:var(--gold-hi);
  background-color:rgba(200,162,74,.06);
}
.btn--ghost:hover{background-color:rgba(200,162,74,.15);border-color:var(--gold-hi);}
.btn--quiet{
  border-color:rgba(124,143,163,.45);
  color:var(--mist);
  background-color:transparent;
}
.btn--quiet:hover{border-color:var(--gold);color:var(--gold-hi);}

/* ---------- 胶囊标签 ---------- */
.pill{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 13px;
  border-radius:999px;
  border:1px solid rgba(124,143,163,.32);
  background-color:rgba(215,225,234,.1);
  color:var(--mist);
  font-size:13px;
  font-weight:500;
  line-height:1.6;
}
.pill--gold{
  border-color:rgba(200,162,74,.5);
  background-color:rgba(200,162,74,.12);
  color:var(--gold-hi);
}

/* ---------- 卡片 ---------- */
.card{
  border-radius:var(--radius-md);
  border:1px solid rgba(124,143,163,.22);
  background-color:rgba(28,69,102,.46);
  padding:clamp(20px,2.6vw,32px);
}
.card--gold{
  border-color:rgba(200,162,74,.45);
  background-image:linear-gradient(170deg,rgba(200,162,74,.15),rgba(28,69,102,.5));
}
.card--light{background-color:var(--paper);color:var(--ink-900);border-color:rgba(11,27,43,.1);}
.card--mist{background-color:var(--mist);color:var(--ink-900);border-color:rgba(11,27,43,.08);}

/* ---------- 栅格 ---------- */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(18px,2.4vw,30px);
}
.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;}

/* ---------- 图片容器 ---------- */
.figure{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-xl);
  border:1px solid rgba(138,106,71,.35);
  background-image:linear-gradient(150deg,var(--ink-600),var(--ink-900));
}
.figure > img,
.figure > picture > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure--16-9{aspect-ratio:16 / 9;}
.figure--4-3{aspect-ratio:4 / 3;}
.figure--1-1{aspect-ratio:1 / 1;}
.figure--3-4{aspect-ratio:3 / 4;}
.figure--empty::before{
  content:attr(data-label);
  position:absolute;
  inset:0;
  display:grid;
  place-items:center;
  padding:20px;
  font-family:var(--font-display);
  font-size:13px;
  letter-spacing:.2em;
  text-align:center;
  color:rgba(232,199,122,.6);
  background-image:repeating-linear-gradient(135deg,rgba(232,199,122,.07) 0 1px,transparent 1px 12px);
}
.figure__caption{
  margin-top:12px;
  font-size:13px;
  color:var(--slate);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  font-size:13px;
  line-height:1.7;
  color:inherit;
  opacity:.72;
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  list-style:none;
}
.breadcrumbs li{display:flex;align-items:center;gap:8px;}
.breadcrumbs li + li::before{content:"/";color:var(--copper);opacity:.9;}
.breadcrumbs a{text-decoration:none;}
.breadcrumbs a:hover{color:var(--gold-hi);}
.breadcrumbs [aria-current="page"]{color:var(--gold-hi);opacity:1;}

/* ---------- 左侧纵向锚点 ---------- */
.anchor-rail{
  position:sticky;
  top:150px;
  display:grid;
  gap:4px;
  align-self:start;
}
.anchor-rail a{
  display:block;
  padding:10px 14px;
  border-left:2px solid rgba(138,106,71,.35);
  border-radius:0 12px 12px 0;
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  color:var(--slate);
  transition:color var(--dur-fast) var(--ease),
             background-color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease);
}
.anchor-rail a:hover{color:var(--mist);background-color:rgba(28,69,102,.5);}
.anchor-rail a[aria-current="true"]{
  color:var(--gold-hi);
  background-color:rgba(200,162,74,.1);
  border-left-color:var(--gold);
}

/* ---------- 分段切换 ---------- */
.tablist{
  display:inline-flex;
  flex-wrap:wrap;
  gap:4px;
  padding:5px;
  border-radius:999px;
  border:1px solid rgba(124,143,163,.28);
  background-color:rgba(11,27,43,.55);
}
.tab{
  padding:9px 20px;
  border:0;
  border-radius:999px;
  background:transparent;
  color:var(--slate);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:background-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.tab:hover{color:var(--mist);}
.tab[aria-selected="true"]{
  background-image:linear-gradient(160deg,var(--gold-hi),var(--gold));
  color:#1A1206;
}
.tabpanel{animation:fade-up var(--dur-slow) var(--ease);}

@keyframes fade-up{
  from{opacity:0;transform:translateY(10px);}
  to{opacity:1;transform:none;}
}

/* ---------- 手风琴 ---------- */
.acc{
  border-bottom:1px solid rgba(138,106,71,.32);
}
.acc > summary{
  position:relative;
  padding:18px 44px 18px 0;
  font-weight:500;
  cursor:pointer;
  list-style:none;
  color:inherit;
}
.acc > summary::-webkit-details-marker{display:none;}
.acc > summary::after{
  content:"+";
  position:absolute;
  right:8px;
  top:50%;
  transform:translateY(-50%);
  font-family:var(--font-display);
  font-size:19px;
  color:var(--gold);
  transition:transform var(--dur-fast) var(--ease),opacity var(--dur-fast) var(--ease);
}
.acc[open] > summary::after{content:"–";}
.acc-body{padding-bottom:20px;}

/* ---------- 条目索引 ---------- */
.index-list{list-style:none;display:grid;gap:10px;}
.index-list a{
  display:flex;
  align-items:baseline;
  gap:10px;
  text-decoration:none;
  color:var(--mist);
  font-weight:500;
}
.index-list a:hover{color:var(--gold-hi);}
.index-list a::after{
  content:"";
  flex:1;
  height:1px;
  background-image:linear-gradient(90deg,rgba(138,106,71,.55),rgba(138,106,71,0));
}

/* ==========================================================================
   头部
   ========================================================================== */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  isolation:isolate;
  background-image:linear-gradient(180deg,var(--ink-900) 0%,var(--ink-800) 100%);
  border-bottom:1px solid rgba(138,106,71,.42);
  color:var(--paper);
  transition:box-shadow var(--dur-slow) var(--ease);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(232,199,122,.05) 0 1px,transparent 1px 10px);
  opacity:.55;
}
.site-header[data-stuck="true"]{box-shadow:0 18px 44px rgba(3,10,18,.55);}

.skip-link{
  position:absolute;
  left:var(--gutter);
  top:-120px;
  z-index:200;
  padding:12px 22px;
  border-radius:999px;
  background-color:var(--gold-hi);
  color:#1A1206;
  font-size:14px;
  font-weight:500;
  text-decoration:none;
  transition:top var(--dur-fast) var(--ease);
}
.skip-link:focus{top:14px;}

/* 上层品牌条 */
.header-rail{
  position:relative;
  transition:opacity var(--dur-slow) var(--ease);
}
.site-header[data-stuck="true"] .header-rail{opacity:.6;}

.rail-inner{
  display:grid;
  grid-template-columns:minmax(0,auto) auto minmax(0,1fr);
  align-items:center;
  gap:clamp(12px,2.2vw,34px);
  min-height:60px;
  padding-block:10px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:13px;
  min-width:0;
  text-decoration:none;
  color:inherit;
}
.brand-mark{
  flex:none;
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  border-radius:14px;
  border:1px solid rgba(200,162,74,.55);
  background-image:linear-gradient(160deg,rgba(200,162,74,.22),rgba(28,69,102,.6));
  font-family:var(--font-display);
  font-size:19px;
  font-weight:700;
  color:var(--gold-hi);
}
.brand-text{display:grid;gap:1px;min-width:0;}
.brand-name{
  font-family:var(--font-display);
  font-size:16px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.3;
}
.brand-line{
  font-size:11px;
  letter-spacing:.2em;
  color:var(--slate);
  line-height:1.5;
}
.brand--footer .brand-name{font-size:17px;}

/* 固定下载入口（左上第二栏） */
.rail-pinned{position:relative;}
.pinned-trigger{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:9px 18px;
  border-radius:999px;
  border:1px solid rgba(200,162,74,.7);
  background-image:linear-gradient(180deg,rgba(200,162,74,.14),rgba(200,162,74,.02));
  color:var(--gold-hi);
  font-size:14px;
  font-weight:500;
  line-height:1.5;
  text-decoration:none;
  white-space:nowrap;
  transition:border-color var(--dur-fast) var(--ease),background-color var(--dur-fast) var(--ease);
}
.pinned-trigger:hover{
  border-color:var(--gold-hi);
  background-color:rgba(200,162,74,.18);
}
.pinned-dot{
  width:7px;
  height:7px;
  border-radius:50%;
  background-color:var(--gold-hi);
  box-shadow:0 0 0 3px rgba(232,199,122,.18);
}
.pinned-tray{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  z-index:80;
  display:grid;
  gap:2px;
  min-width:196px;
  padding:8px;
  border-radius:22px;
  border:1px solid rgba(200,162,74,.42);
  background-image:linear-gradient(180deg,var(--ink-700),var(--ink-800));
  box-shadow:0 28px 56px rgba(3,10,18,.6);
  opacity:0;
  visibility:hidden;
  transform:translateY(-8px);
  transition:opacity var(--dur-fast) var(--ease),
             transform var(--dur-fast) var(--ease),
             visibility var(--dur-fast) var(--ease);
}
.rail-pinned:hover .pinned-tray,
.rail-pinned:focus-within .pinned-tray{
  opacity:1;
  visibility:visible;
  transform:none;
}
.pinned-tray a{
  padding:9px 14px;
  border-radius:14px;
  font-size:14px;
  text-decoration:none;
  color:var(--mist);
  transition:background-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.pinned-tray a:hover{background-color:rgba(200,162,74,.14);color:var(--gold-hi);}

/* 上层右侧元信息 */
.rail-meta{
  justify-self:end;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:9px;
  list-style:none;
}
.meta-chip{
  display:inline-flex;
  align-items:center;
  padding:5px 12px;
  border-radius:999px;
  border:1px solid rgba(124,143,163,.3);
  color:var(--slate);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.6;
  white-space:nowrap;
}
.meta-chip--save{color:var(--mist);border-color:rgba(138,106,71,.5);}
.meta-chip--icp{color:var(--copper);}

/* 下层栏目条 */
.header-main{
  position:relative;
  background-image:linear-gradient(180deg,rgba(11,27,43,0) 0%,rgba(18,48,74,.6) 100%);
  border-top:1px solid rgba(124,143,163,.16);
}
.main-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,22px);
  min-height:68px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 16px;
  border-radius:999px;
  border:1px solid rgba(124,143,163,.4);
  background:transparent;
  color:var(--mist);
  font-size:14px;
  font-weight:500;
  cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-hi);}
.nav-toggle-bars{display:grid;gap:4px;width:18px;}
.nav-toggle-bars span{
  display:block;
  height:1.5px;
  border-radius:2px;
  background-color:currentColor;
  transition:transform var(--dur-fast) var(--ease),opacity var(--dur-fast) var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

.site-nav{display:flex;align-items:center;}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  list-style:none;
}
.nav-list a{
  display:inline-block;
  padding:9px 17px;
  border-radius:999px;
  border:1px solid transparent;
  color:rgba(244,241,234,.74);
  font-size:15px;
  font-weight:500;
  line-height:1.5;
  text-decoration:none;
  transition:color var(--dur-fast) var(--ease),
             background-color var(--dur-fast) var(--ease),
             border-color var(--dur-fast) var(--ease);
}
.nav-list a:hover{
  color:var(--paper);
  background-color:rgba(28,69,102,.75);
  border-color:rgba(200,162,74,.35);
}
.nav-list a[aria-current="page"]{
  color:#1A1206;
  background-image:linear-gradient(160deg,var(--gold-hi),var(--gold));
  border-color:var(--gold-hi);
}

/* 工具区与站内检索 */
.header-tools{
  position:relative;
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}
.tool-search{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  border-radius:999px;
  border:1px solid rgba(124,143,163,.4);
  background:transparent;
  color:var(--mist);
  cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),
             color var(--dur-fast) var(--ease),
             background-color var(--dur-fast) var(--ease);
}
.tool-search:hover{border-color:var(--gold);color:var(--gold-hi);background-color:rgba(200,162,74,.08);}
.tool-search[aria-expanded="true"]{
  border-color:var(--gold-hi);
  color:var(--gold-hi);
  background-color:rgba(200,162,74,.16);
}
.tool-search-icon{
  position:relative;
  width:14px;
  height:14px;
  border-radius:50%;
  border:1.5px solid currentColor;
}
.tool-search-icon::after{
  content:"";
  position:absolute;
  right:-5px;
  bottom:-4px;
  width:7px;
  height:1.5px;
  border-radius:2px;
  background-color:currentColor;
  transform:rotate(45deg);
}

.site-search{
  position:absolute;
  top:calc(100% + 14px);
  right:0;
  z-index:80;
  width:min(340px,86vw);
  padding:18px;
  border-radius:24px;
  border:1px solid rgba(200,162,74,.38);
  background-image:linear-gradient(180deg,var(--ink-700),var(--ink-800));
  box-shadow:0 30px 62px rgba(3,10,18,.66);
}
.search-title{
  margin:0 0 12px;
  font-family:var(--font-display);
  font-size:13px;
  letter-spacing:.18em;
  color:var(--gold);
}
.search-input{
  width:100%;
  padding:11px 15px;
  border-radius:14px;
  border:1px solid rgba(124,143,163,.42);
  background-color:rgba(11,27,43,.72);
  color:var(--paper);
  font-size:14px;
  line-height:1.6;
}
.search-input::placeholder{color:rgba(124,143,163,.85);}
.search-input:focus{border-color:var(--gold);outline:none;}
.search-list{
  list-style:none;
  display:grid;
  gap:2px;
  margin-top:12px;
  max-height:260px;
  overflow-y:auto;
}
.search-list a{
  display:block;
  padding:9px 13px;
  border-radius:12px;
  font-size:14px;
  text-decoration:none;
  color:var(--mist);
  transition:background-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.search-list a:hover{background-color:rgba(200,162,74,.14);color:var(--gold-hi);}
.search-empty{
  margin:12px 0 0;
  font-size:13px;
  color:var(--slate);
}

/* 滚动进度 */
.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:100%;
  height:2px;
  background-image:linear-gradient(90deg,var(--gold),var(--gold-hi));
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 120ms linear;
  pointer-events:none;
}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  border-top:1px solid rgba(138,106,71,.42);
  background-image:linear-gradient(180deg,var(--ink-800) 0%,var(--ink-900) 72%);
  color:rgba(244,241,234,.8);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:repeating-linear-gradient(135deg,rgba(232,199,122,.045) 0 1px,transparent 1px 11px);
}

.footer-grid{
  position:relative;
  display:grid;
  grid-template-columns:1.6fr 1fr 1fr 1.35fr;
  gap:clamp(26px,3.6vw,52px);
  padding-top:clamp(46px,6.5vw,84px);
  padding-bottom:clamp(34px,4.5vw,58px);
}
.footer-col{min-width:0;}

.footer-claim{
  margin:22px 0 10px;
  max-width:22em;
  font-family:var(--font-display);
  font-size:17px;
  line-height:1.6;
  color:var(--paper);
}
.footer-hint{
  max-width:24em;
  font-size:13px;
  line-height:1.8;
  color:var(--slate);
}

.footer-title{
  margin:0 0 18px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--gold);
}

.footer-list{
  list-style:none;
  display:grid;
  gap:9px;
}
.footer-list a{
  font-size:14px;
  text-decoration:none;
  color:rgba(244,241,234,.76);
  transition:color var(--dur-fast) var(--ease),padding-left var(--dur-fast) var(--ease);
}
.footer-list a:hover{color:var(--gold-hi);padding-left:5px;}

.footer-contact{
  list-style:none;
  display:grid;
  gap:13px;
  font-size:14px;
}
.footer-contact li{display:grid;gap:2px;}
.contact-key{
  font-size:11px;
  letter-spacing:.18em;
  color:var(--copper);
}
.contact-value{
  color:rgba(244,241,234,.88);
  overflow-wrap:anywhere;
}

.footer-bottom{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-block:22px 30px;
  border-top:1px solid rgba(124,143,163,.22);
  font-size:13px;
  color:var(--slate);
}
.footer-copy{margin:0;}
.legal-links{
  list-style:none;
  display:flex;
  flex-wrap:wrap;
  gap:20px;
}
.legal-links a{
  text-decoration:none;
  color:var(--slate);
  transition:color var(--dur-fast) var(--ease);
}
.legal-links a:hover{color:var(--gold-hi);}

/* ==========================================================================
   显现动画
   ========================================================================== */
.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity var(--dur-slow) var(--ease),transform var(--dur-slow) var(--ease);
}
.has-js [data-reveal="shown"]{
  opacity:1;
  transform:none;
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (max-width:1100px){
  .rail-meta .meta-chip--save{display:none;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex;}

  .site-nav{
    position:absolute;
    left:var(--gutter);
    right:var(--gutter);
    top:calc(100% - 4px);
    z-index:75;
    display:block;
    padding:14px;
    border-radius:24px;
    border:1px solid rgba(200,162,74,.36);
    background-image:linear-gradient(180deg,var(--ink-700),var(--ink-800));
    box-shadow:0 32px 64px rgba(3,10,18,.68);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity var(--dur-fast) var(--ease),
               transform var(--dur-fast) var(--ease),
               visibility var(--dur-fast) var(--ease);
  }
  .site-nav[data-open="true"]{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav-list{flex-direction:column;gap:2px;}
  .nav-list a{display:block;padding:13px 18px;border-radius:18px;font-size:16px;}

  .site-search{
    left:var(--gutter);
    right:var(--gutter);
    width:auto;
  }

  .anchor-rail{
    position:static;
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    top:auto;
  }
  .anchor-rail a{
    border-left:1px solid rgba(138,106,71,.35);
    border-radius:999px;
    padding:8px 16px;
  }

  .span-3,.span-4,.span-6,.span-8{grid-column:span 12;}
}

@media (max-width:760px){
  .rail-meta .meta-chip:not(.meta-chip--icp){display:none;}
  .header-rail .pinned-tray{display:none;}
  .figure{border-radius:var(--radius-lg);}
}

@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{justify-content:flex-start;}
  .brand-line{display:none;}
  .footer-claim{font-size:16px;}
}

@media (max-width:520px){
  .rail-meta{display:none;}
  .rail-inner{grid-template-columns:minmax(0,auto) 1fr;}
  .rail-pinned{justify-self:end;}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{
    animation-duration:1ms !important;
    animation-iteration-count:1 !important;
    transition-duration:1ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none;}
}