/* =========================================================================
   永利CN中文官网 — 共享站点样式 /assets/site.css
   外壳结构：框架导航轨（frame rail） + 内容画板（panels） + 档案页脚
   ========================================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --green:#174A3C;
  --green-deep:#0F332A;
  --gold:#C89A4B;
  --gold-soft:#D6A85A;
  --cream:#F4EFE5;
  --paper:#FCFAF5;
  --cyan:#2E7F8F;
  --ink:#1D2522;
  --muted:#6E8178;
  --mist:#DDE7E2;
  --amber-bg:#F2E3C6;
  --amber-ink:#7A5720;

  --line:rgba(23,74,60,.16);
  --line-strong:rgba(23,74,60,.34);
  --line-light:rgba(252,250,245,.20);

  --font-display:"Songti SC","STSong","Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","Cascadia Mono",Menlo,Consolas,"Courier New",monospace;

  --max:1280px;
  --gutter:clamp(18px,4vw,48px);
  --shadow:0 20px 44px -30px rgba(15,51,42,.62);
  --ease:cubic-bezier(.22,.68,.28,1);
  --cut:22px;
}

/* ---------- 2. 重置与中文排版 ---------- */
*,
*::before,
*::after{ box-sizing:border-box; }

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

body{
  margin:0;
  min-height:100vh;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--ink);
  background-color:var(--cream);
  background-image:
    radial-gradient(1100px 560px at 104% -8%,rgba(200,154,75,.13),transparent 62%),
    radial-gradient(900px 520px at -8% 16%,rgba(46,127,143,.09),transparent 60%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:600;
  line-height:1.26;
  letter-spacing:-.01em;
  color:var(--green);
  text-wrap:balance;
}
h1{ font-size:clamp(34px,4.6vw,62px); }
h2{ font-size:clamp(26px,3vw,38px); }
h3{ font-size:clamp(20px,2.1vw,26px); }
h4{ font-size:clamp(17px,1.6vw,20px); }

p{ margin:0; }
p + p{ margin-top:1em; }
ul,ol{ margin:0; padding:0; }
li{ list-style:none; }
img{ display:block; max-width:100%; height:auto; }
a{ color:var(--cyan); text-underline-offset:3px; }
a:hover{ color:var(--green); }
strong,b{ font-weight:600; }
hr{ border:0; border-top:1px solid var(--line); margin:0; }

.mono{
  font-family:var(--font-mono);
  font-size:.76em;
  letter-spacing:.08em;
  color:var(--muted);
}

.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;
}

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

.section{
  padding-block:clamp(34px,6vw,72px);
}

.grid{
  display:grid;
  gap:clamp(18px,2.4vw,32px);
}
.grid--2{ grid-template-columns:repeat(2,minmax(0,1fr)); }
.grid--3{ grid-template-columns:repeat(3,minmax(0,1fr)); }
.grid--asym{ grid-template-columns:minmax(0,1.55fr) minmax(230px,.75fr); }

/* ---------- 4. 头部：框架导航轨 ---------- */
.skip-link{
  position:fixed;
  top:-120px;
  left:14px;
  z-index:300;
  padding:12px 20px;
  background:var(--green);
  color:var(--paper);
  font-size:14px;
  letter-spacing:.04em;
  text-decoration:none;
  transition:top .2s var(--ease);
}
.skip-link:focus{ top:14px; color:var(--paper); }

.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--paper);
  border-bottom:1px solid var(--green);
  box-shadow:0 12px 26px -24px rgba(15,51,42,.8);
}
.site-header::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-1px;
  height:3px;
  background:linear-gradient(90deg,var(--gold) 0 34%,var(--green) 34% 100%);
  opacity:.55;
  pointer-events:none;
}

.frame-rail{
  border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,var(--paper) 0%,rgba(252,250,245,.94) 100%);
}
.frame-rail__inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,22px);
  width:100%;
  max-width:var(--max);
  margin-inline:auto;
  padding:12px var(--gutter);
}
.frame-rail__utility{
  margin:0 0 0 auto;
  padding-left:clamp(12px,2vw,22px);
  border-left:1px solid var(--line);
  max-width:23ch;
  font-size:13.5px;
  line-height:1.5;
  color:var(--muted);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:var(--green);
}
.brand__mark{
  display:grid;
  place-items:center;
  flex:0 0 auto;
  width:42px;
  height:42px;
  background:var(--green);
  color:var(--gold);
  font-family:var(--font-display);
  font-size:22px;
  line-height:1;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand__text{
  display:flex;
  flex-direction:column;
  line-height:1.3;
}
.brand__name{
  font-family:var(--font-display);
  font-size:19px;
  font-weight:600;
  letter-spacing:.01em;
  color:var(--green);
}
.brand__note{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:11px 16px;
  background:var(--green);
  color:var(--paper);
  border:1px solid var(--green);
  font-family:var(--font-body);
  font-size:14px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.nav-toggle:hover{ background:var(--green-deep); border-color:var(--green-deep); }
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:3px;
  width:16px;
}
.nav-toggle__bars i{
  display:block;
  height:2px;
  width:100%;
  background:currentColor;
  transition:transform .26s var(--ease),opacity .2s var(--ease);
}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){ transform:translateY(5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars i:nth-child(2){ opacity:0; }
.site-header[data-open] .nav-toggle__bars i:nth-child(3){ transform:translateY(-5px) rotate(-45deg); }
.nav-toggle__label{ white-space:nowrap; }

.site-nav{
  display:grid;
  grid-template-rows:1fr;
  background:var(--green-deep);
  border-top:1px solid var(--line-light);
}
.site-nav__inner{
  width:100%;
  max-width:var(--max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.site-nav__track{
  display:flex;
  align-items:stretch;
  overflow-x:auto;
  scrollbar-width:thin;
}
.site-nav__track > li{ flex:0 0 auto; }

.site-nav__link{
  position:relative;
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:15px 18px 14px;
  font-size:15px;
  letter-spacing:.04em;
  color:#D6E2DB;
  text-decoration:none;
  white-space:nowrap;
  transition:color .22s var(--ease),background-color .22s var(--ease);
}
.site-nav__link::before{
  content:attr(data-index);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:var(--gold-soft);
  opacity:.5;
  transition:opacity .22s var(--ease),color .22s var(--ease);
}
.site-nav__link:hover{
  color:var(--paper);
  background:rgba(252,250,245,.07);
}
.site-nav__link:hover::before{ opacity:1; }
.site-nav__link[aria-current="page"]{
  color:#FFFFFF;
  background:rgba(200,154,75,.15);
}
.site-nav__link[aria-current="page"]::before{
  opacity:1;
  color:var(--gold);
}
.site-nav__link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:18px; right:18px; bottom:5px;
  height:2px;
  background:var(--gold);
}

/* ---------- 5. 页脚：档案底栏 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,110px);
  background:var(--green-deep);
  color:#DCE7E1;
}
.site-footer::before{
  content:"";
  display:block;
  height:6px;
  background-image:
    repeating-linear-gradient(90deg,var(--gold) 0 2px,transparent 2px 26px),
    linear-gradient(90deg,rgba(200,154,75,.5),rgba(200,154,75,0) 70%);
  opacity:.75;
}

.footer-inner{
  width:100%;
  max-width:var(--max);
  margin-inline:auto;
  padding:clamp(38px,6vw,72px) var(--gutter) 0;
}

.footer-grid{
  display:grid;
  grid-template-columns:1.5fr .75fr .75fr .75fr 1.35fr;
  gap:clamp(22px,3vw,44px);
}

.footer-brand .brand{ margin-bottom:16px; }
.brand--footer .brand__mark{
  background:var(--gold);
  color:var(--green-deep);
}
.brand--footer .brand__name{ color:var(--paper); }
.brand--footer .brand__note{ color:rgba(252,250,245,.62); }

.footer-statement{
  max-width:34ch;
  font-size:14.5px;
  line-height:1.75;
  color:rgba(252,250,245,.76);
}

.footer-col__title{
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line-light);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.15em;
  color:var(--gold-soft);
}

.footer-col__list{
  display:grid;
  gap:2px;
}

.footer-link{
  display:inline-block;
  padding:5px 0;
  font-size:15px;
  color:#DCE7E1;
  text-decoration:none;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-link:hover{
  color:var(--gold-soft);
  transform:translateX(3px);
}
.footer-link--small{ font-size:13px; padding:2px 0; }

.footer-contact__list{
  display:grid;
  gap:11px;
}
.footer-contact__list li{
  display:grid;
  grid-template-columns:44px minmax(0,1fr);
  gap:10px;
  align-items:start;
  font-size:14px;
  line-height:1.65;
}
.footer-contact__label{
  padding-top:2px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--gold-soft);
}
.footer-contact__value{
  color:#DCE7E1;
  word-break:break-word;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px 28px;
  margin-top:clamp(30px,5vw,56px);
  padding:20px 0 30px;
  border-top:1px solid var(--line-light);
  font-size:13px;
  color:rgba(252,250,245,.68);
}
.footer-legal__group{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 20px;
}
.footer-legal__copy,
.footer-legal__icp{ margin:0; }
.footer-legal__icp{
  font-family:var(--font-mono);
  letter-spacing:.06em;
}
.footer-legal__links{
  display:flex;
  flex-wrap:wrap;
  gap:6px 20px;
}
.footer-legal__links .footer-link{
  color:rgba(252,250,245,.72);
}
.footer-legal__links .footer-link:hover{ color:var(--gold-soft); }

/* ---------- 6. 按钮与标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  border:1px solid transparent;
  background:var(--green);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:600;
  letter-spacing:.05em;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease),transform .22s var(--ease);
}
.btn:hover{ background:var(--green-deep); color:var(--paper); }
.btn:active{ transform:translateY(1px); }

.btn--frame{
  background:transparent;
  color:var(--green);
  border-color:var(--green);
}
.btn--frame:hover{
  background:var(--green);
  color:var(--paper);
}

.btn--gold{
  background:var(--gold);
  border-color:var(--gold);
  color:var(--green-deep);
}
.btn--gold:hover{
  background:var(--gold-soft);
  border-color:var(--gold-soft);
  color:var(--green-deep);
}

.btn--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
}
.btn--cut:focus-visible{
  outline:none;
  box-shadow:inset 0 0 0 3px var(--cyan);
}

.btn--sm{
  padding:10px 18px;
  font-size:14px;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  background:var(--mist);
  color:var(--green);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.7;
}
.tag--gold{
  background:var(--gold);
  color:var(--green-deep);
}
.tag--old{
  background:var(--amber-bg);
  color:var(--amber-ink);
  border:1px solid rgba(200,154,75,.55);
}
.tag--cyan{
  background:rgba(46,127,143,.13);
  color:#1F5C68;
}

/* ---------- 7. 面板与档案卡 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,3vw,34px);
  background:var(--paper);
  border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.panel--cream{ background:var(--cream); }
.panel--dark{
  background:var(--green-deep);
  border-color:var(--green-deep);
  color:#E3ECE6;
}
.panel--dark h2,
.panel--dark h3,
.panel--dark .archive-card__title{ color:var(--paper); }
.panel--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - var(--cut)),calc(100% - var(--cut)) 100%,0 100%);
}
.panel__label{
  display:inline-block;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--gold);
}
.panel--dark .panel__label{ color:var(--gold-soft); }

.archive-card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:20px 22px;
  background:var(--paper);
  border:1px solid var(--line);
  border-left:3px solid var(--gold);
  box-shadow:var(--shadow);
  transition:transform .26s var(--ease),border-color .26s var(--ease),box-shadow .26s var(--ease);
}
.archive-card:hover{
  transform:translateY(-3px);
  border-left-color:var(--cyan);
  box-shadow:0 26px 48px -32px rgba(15,51,42,.7);
}
.archive-card__head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px;
}
.archive-card__title{
  margin:0;
  font-family:var(--font-display);
  font-size:19px;
  color:var(--green);
}
.archive-card__meta{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}

/* ---------- 8. 内容基础组件 ---------- */
.prose{
  max-width:66ch;
  font-size:17px;
  line-height:1.85;
  color:var(--ink);
}
.prose > * + *{ margin-top:1.05em; }
.prose h2{
  margin-top:1.8em;
  font-size:clamp(22px,2.4vw,30px);
}
.prose h3{ margin-top:1.6em; }
.prose ul,
.prose ol{ padding-left:1.2em; }
.prose li{
  list-style:disc;
  padding-left:.2em;
}
.prose ol li{ list-style:decimal; }
.prose blockquote{
  margin:1.4em 0;
  padding:14px 20px;
  border-left:3px solid var(--gold);
  background:var(--paper);
  color:var(--green);
}

.breadcrumb{
  margin:0 0 20px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--muted);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.breadcrumb li + li::before{
  content:"/";
  margin-right:8px;
  color:var(--gold);
}
.breadcrumb a{
  color:var(--green);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease);
}
.breadcrumb a:hover{ border-bottom-color:var(--gold); }

.media-frame{
  position:relative;
  margin:0;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:var(--mist);
  border:1px solid var(--line);
}
.media-frame--wide{ aspect-ratio:21 / 9; }
.media-frame--tall{ aspect-ratio:4 / 5; }
.media-frame--square{ aspect-ratio:1 / 1; }
.media-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame__placeholder{
  width:100%;
  height:100%;
  background-image:
    linear-gradient(155deg,rgba(23,74,60,.10),rgba(200,154,75,.16)),
    repeating-linear-gradient(0deg,transparent 0 23px,rgba(23,74,60,.07) 23px 24px),
    repeating-linear-gradient(90deg,transparent 0 23px,rgba(23,74,60,.05) 23px 24px);
  background-color:var(--paper);
}
.media-frame__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--muted);
}

.tabs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:0 0 22px;
}
.tab{
  appearance:none;
  padding:9px 17px;
  background:var(--paper);
  border:1px solid var(--line-strong);
  color:var(--green);
  font-family:var(--font-body);
  font-size:14px;
  letter-spacing:.04em;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),border-color .22s var(--ease);
}
.tab:hover{ border-color:var(--green); }
.tab[aria-selected="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--paper);
}

.timeline{
  position:relative;
  margin:0;
  padding:0 0 0 22px;
  border-left:1px solid var(--line-strong);
}
.timeline__item{
  position:relative;
  padding-bottom:22px;
}
.timeline__item:last-child{ padding-bottom:0; }
.timeline__item::before{
  content:"";
  position:absolute;
  left:-27px;
  top:9px;
  width:9px;
  height:9px;
  background:var(--gold);
  transform:rotate(45deg);
}
.timeline__date{
  display:block;
  margin-bottom:4px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

/* ---------- 9. 状态、动效与无障碍 ---------- */
:focus-visible{
  outline:3px solid var(--cyan);
  outline-offset:3px;
}
.btn--cut:focus-visible,
.archive-card:focus-visible{
  outline:none;
  box-shadow:inset 0 0 0 3px var(--cyan);
}

.scroll-progress{
  position:fixed;
  left:0;
  top:0;
  z-index:200;
  width:100%;
  height:3px;
  background:linear-gradient(90deg,var(--gold),var(--cyan));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .12s linear;
  pointer-events:none;
}

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

/* ---------- 10. 响应式 ---------- */
@media (max-width:1080px){
  .grid--3{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-grid{ grid-template-columns:repeat(3,minmax(0,1fr)); }
  .footer-brand{ grid-column:1 / -1; }
  .footer-contact{ grid-column:1 / -1; }
}

@media (max-width:900px){
  .frame-rail__utility{ display:none; }
  .nav-toggle{ display:inline-flex; margin-left:auto; }
  .frame-rail__cta{ margin-left:auto; }
  .site-nav{ grid-template-rows:0fr; transition:grid-template-rows .32s var(--ease); }
  .site-nav__inner{ overflow:hidden; min-height:0; }
  .site-header[data-open] .site-nav{ grid-template-rows:1fr; }
  .site-nav__track{
    flex-direction:column;
    align-items:stretch;
    max-height:min(60vh,420px);
    overflow-y:auto;
    padding:8px 0 14px;
  }
  .site-nav__link{
    padding:13px 6px;
    border-bottom:1px solid var(--line-light);
  }
  .site-nav__link[aria-current="page"]::after{
    left:6px;
    right:auto;
    width:30px;
    bottom:4px;
  }
  .grid--asym{ grid-template-columns:minmax(0,1fr); }
}

@media (max-width:760px){
  body{ font-size:16px; line-height:1.78; }
  .grid--2,
  .grid--3{ grid-template-columns:minmax(0,1fr); }
  .footer-grid{ grid-template-columns:repeat(2,minmax(0,1fr)); }
  .footer-legal{ flex-direction:column; align-items:flex-start; }
}

@media (max-width:620px){
  .frame-rail__cta{ display:none; }
  .brand__mark{ width:36px; height:36px; font-size:19px; }
  .brand__name{ font-size:17px; }
  .brand__note{ font-size:10px; letter-spacing:.06em; }
  .footer-grid{ grid-template-columns:minmax(0,1fr); }
  .footer-contact__list li{ grid-template-columns:48px minmax(0,1fr); }
  .btn{ width:100%; }
  .frame-rail__cta,
  .nav-toggle{ width:auto; }
}