/* ==========================================================================
   永利官网 · site.css（共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 通用件）
   ========================================================================== */

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

/* ---------- tokens ---------- */
:root{
  --yl-red:#A8121F;
  --yl-red-deep:#6E0B16;
  --yl-gold:#C9A227;
  --yl-gold-light:#E8C766;
  --yl-gold-ink:#8A6C12;
  --yl-green:#12261F;
  --yl-green-soft:#1D3A30;
  --yl-moss:#4A6B5A;
  --yl-stone:#5E6367;
  --yl-clay:#B06A4A;
  --yl-paper:#F7F3EC;
  --yl-paper-2:#EDE6DA;
  --yl-neon:#5B4BE0;
  --yl-line:rgba(18,38,31,.14);
  --yl-line-gold:rgba(201,162,39,.40);
  --yl-ink-soft:rgba(18,38,31,.66);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",Georgia,serif;
  --font-body:"PingFang SC","Inter","Helvetica Neue",Arial,"Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono","SFMono-Regular",Consolas,"Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
  --radius:18px;
  --radius-pill:999px;
  --shadow-soft:0 18px 44px -30px rgba(18,38,31,.75);
  --wrap:1280px;
}

/* ---------- base + 中文排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  color:var(--yl-green);
  background-color:var(--yl-paper);
  background-image:
    radial-gradient(1100px 560px at 88% -6%, rgba(201,162,39,.12), transparent 62%),
    radial-gradient(880px 520px at -8% 24%, rgba(18,38,31,.07), transparent 66%);
  background-repeat:no-repeat;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.16;
  letter-spacing:-.012em;
  color:var(--yl-green);
}
h1{font-size:2.2rem}
h2{font-size:1.35rem}
h3{font-size:1.05rem}
h4{font-size:.95rem}
p{line-height:1.75}
strong{font-weight:700}
a.link{color:var(--yl-red);border-bottom:1px solid var(--yl-line-gold);transition:color .2s var(--ease),border-color .2s var(--ease)}
a.link:hover{color:var(--yl-neon);border-color:var(--yl-neon)}
::selection{background:rgba(201,162,39,.35);color:var(--yl-green)}

/* ---------- 可访问性 ---------- */
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:200;
  padding:11px 20px;border-radius:var(--radius-pill);
  background:var(--yl-green);color:var(--yl-gold-light);
  font-size:.85rem;font-weight:700;letter-spacing:.04em;
  box-shadow:var(--shadow-soft);
  transition:top .24s var(--ease);
}
.skip-link:focus{top:14px}
a:focus-visible,button:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--yl-neon);
  outline-offset:3px;
  border-radius:6px;
}
#main-content{display:block;scroll-margin-top:132px;outline:none}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 通用布局 ---------- */
.wrap{
  width:100%;max-width:var(--wrap);margin:0 auto;
  padding:0 clamp(20px,4vw,48px);
}
.wrap--text{max-width:900px}
.grid-12{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(18px,2.4vw,30px)}
.col-main{grid-column:1 / span 7;min-width:0}
.col-aside{grid-column:9 / span 4;min-width:0}

/* ---------- 阅读进度光带 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:120;
  pointer-events:none;background:transparent;
}
.scroll-progress__fill{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--yl-red),var(--yl-gold),var(--yl-neon));
  transition:width .14s linear;
}

/* ---------- 头部：悬浮胶囊，品牌左 / 栏目右 ---------- */
.site-header{
  position:sticky;top:0;z-index:100;
  padding:16px clamp(12px,3vw,32px) 10px;
}
.header-shell{
  max-width:var(--wrap);margin:0 auto;
  display:flex;align-items:center;gap:18px;
  padding:10px 18px;
  border-radius:var(--radius-pill);
  background:rgba(247,243,236,.55);
  border:1px solid transparent;
  backdrop-filter:blur(10px) saturate(130%);
  -webkit-backdrop-filter:blur(10px) saturate(130%);
  transition:padding .28s var(--ease),background .28s var(--ease),border-color .28s var(--ease),box-shadow .28s var(--ease);
}
.site-header[data-scrolled] .header-shell{
  padding:8px 16px;
  background:rgba(247,243,236,.86);
  border-color:var(--yl-line-gold);
  box-shadow:0 16px 34px -26px rgba(18,38,31,.85);
}
.brand-mark{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto;border-radius:var(--radius-pill)}
.brand-glyph{
  display:grid;place-items:center;
  width:40px;height:40px;border-radius:50%;
  background:var(--yl-green);
  color:var(--yl-gold-light);
  border:2px solid var(--yl-gold);
  font-family:var(--font-display);font-weight:900;font-size:1.15rem;
  line-height:1;
  transition:transform .28s var(--ease),background .28s var(--ease);
}
.brand-mark:hover .brand-glyph{transform:rotate(-6deg);background:var(--yl-red)}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-family:var(--font-display);font-weight:900;font-size:1.05rem;letter-spacing:-.01em}
.brand-note{font-size:.74rem;letter-spacing:.06em;color:var(--yl-stone)}

.site-nav{margin-left:auto;flex:0 1 auto}
.nav-list{display:flex;align-items:center;gap:2px}
.nav-item{flex:0 0 auto}
.nav-link{
  position:relative;display:inline-block;
  padding:9px 13px;border-radius:var(--radius-pill);
  font-size:.92rem;font-weight:600;letter-spacing:.02em;
  color:var(--yl-ink-soft);
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-link:hover{color:var(--yl-red);background:rgba(201,162,39,.18)}
.nav-link[aria-current="page"]{color:var(--yl-red)}
.nav-link[aria-current="page"]::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;
  background:linear-gradient(90deg,var(--yl-red),var(--yl-gold));
  border-radius:2px;
}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  margin-left:auto;
  padding:9px 14px;border-radius:var(--radius-pill);
  border:1px solid var(--yl-line-gold);
  background:rgba(18,38,31,.05);
  font-size:.82rem;font-weight:700;letter-spacing:.08em;color:var(--yl-green);
}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:var(--yl-red);transition:transform .24s var(--ease),opacity .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- 侧边快捷入口 ---------- */
.quick-rail{
  position:fixed;right:0;top:50%;transform:translateY(-50%);
  z-index:95;display:flex;flex-direction:column;gap:8px;
}
.rail-cell{
  display:flex;flex-direction:column;gap:1px;
  padding:11px 13px 11px 15px;
  border-radius:16px 0 0 16px;
  border:1px solid var(--yl-line-gold);border-right:0;
  background:rgba(18,38,31,.92);
  color:var(--yl-paper);
  box-shadow:-10px 14px 30px -24px rgba(18,38,31,.95);
  transition:transform .24s var(--ease),background .24s var(--ease),border-color .24s var(--ease);
}
.rail-cell--trial{background:linear-gradient(140deg,var(--yl-red),var(--yl-red-deep))}
.rail-cell:hover{transform:translateX(-5px);border-color:var(--yl-gold-light)}
.rail-cell__key{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;color:var(--yl-gold-light)}
.rail-cell__text{font-size:.84rem;font-weight:700;letter-spacing:.04em;white-space:nowrap}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(56px,8vw,110px);
  background:
    linear-gradient(180deg,var(--yl-green),#0C1A15 78%,#0A1611);
  color:rgba(247,243,236,.82);
  border-top:1px solid var(--yl-line-gold);
}
.footer-glow{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(560px 260px at 84% 4%, rgba(201,162,39,.22), transparent 64%),
    radial-gradient(460px 320px at 4% 98%, rgba(168,18,31,.30), transparent 68%),
    linear-gradient(118deg, rgba(91,75,224,.16), transparent 46%);
}
.footer-inner{
  position:relative;z-index:1;
  max-width:var(--wrap);margin:0 auto;
  padding:clamp(44px,6vw,76px) clamp(20px,4vw,48px) 32px;
}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1.5fr);
  gap:clamp(28px,4vw,64px);
  padding-bottom:clamp(28px,4vw,44px);
  border-bottom:1px solid rgba(247,243,236,.14);
}
.footer-brand{display:flex;flex-direction:column;gap:10px}
.footer-glyph{
  display:grid;place-items:center;width:44px;height:44px;border-radius:50%;
  background:linear-gradient(140deg,var(--yl-red),var(--yl-red-deep));
  border:2px solid var(--yl-gold);color:var(--yl-gold-light);
  font-family:var(--font-display);font-weight:900;font-size:1.2rem;line-height:1;
}
.footer-brand__name{font-family:var(--font-display);font-weight:900;font-size:1.5rem;color:var(--yl-paper)}
.footer-brand__line{font-size:.98rem;color:var(--yl-gold-light)}
.footer-brand__note{font-size:.86rem;line-height:1.7;color:rgba(247,243,236,.62);max-width:34ch}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.footer-col{display:flex;flex-direction:column;gap:12px}
.footer-col__title{
  font-family:var(--font-mono);font-size:.7rem;font-weight:700;
  letter-spacing:.24em;color:var(--yl-gold);text-transform:uppercase;
}
.footer-list{display:flex;flex-direction:column;gap:9px}
.footer-link{
  font-size:.9rem;color:rgba(247,243,236,.78);
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-link:hover{color:var(--yl-gold-light);border-color:var(--yl-line-gold)}
.footer-contact{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:14px 32px;
  padding:clamp(24px,3vw,34px) 0;
  border-bottom:1px solid rgba(247,243,236,.14);
}
.footer-contact__item{display:flex;flex-direction:column;gap:3px}
.footer-contact__key{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.2em;color:var(--yl-gold)}
.footer-contact__val{font-size:.9rem;color:rgba(247,243,236,.9);word-break:break-word}
.footer-contact__note{grid-column:1/-1;font-size:.82rem;line-height:1.7;color:rgba(247,243,236,.6);max-width:72ch}
.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 24px;padding-top:22px;
  font-family:var(--font-mono);font-size:.74rem;letter-spacing:.08em;
  color:rgba(247,243,236,.55);
}
.footer-legal__icp{color:var(--yl-gold)}

/* ---------- 通用文字件 ---------- */
.display{
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(2.6rem,6vw,5rem);
  line-height:1.06;letter-spacing:-.02em;
}
.lede{font-size:clamp(1.02rem,1.4vw,1.18rem);line-height:1.8;color:var(--yl-ink-soft);max-width:44ch}
.prose{max-width:40rem}
.prose p+p{margin-top:1em}
.prose h2{margin-top:1.8em;margin-bottom:.5em}
.prose h3{margin-top:1.5em;margin-bottom:.4em}
.prose ul{list-style:disc;padding-left:1.3em;margin-top:.8em}
.prose li{margin-top:.4em}
.prose ol{list-style:decimal;padding-left:1.4em;margin-top:.8em}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:.7rem;font-weight:700;
  letter-spacing:.24em;text-transform:uppercase;color:var(--yl-gold-ink);
}
.eyebrow::before{content:"";width:24px;height:2px;background:currentColor;border-radius:2px}
.section-head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px;padding-bottom:14px;margin-bottom:26px;
  border-bottom:1px solid var(--yl-line);
}
.section-title{font-family:var(--font-display);font-weight:900;font-size:1.35rem}
.note{
  font-size:.9rem;line-height:1.7;color:var(--yl-stone);
  padding-left:14px;border-left:2px solid var(--yl-line-gold);
}
.num{font-family:var(--font-mono);font-size:.92em;letter-spacing:.02em;color:var(--yl-gold-ink)}
.divider{height:1px;border:0;margin:clamp(26px,4vw,42px) 0;background:linear-gradient(90deg,var(--yl-gold),rgba(201,162,39,0))}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 11px;border-radius:var(--radius-pill);
  border:1px solid var(--yl-line);
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--yl-stone);
}
.tag--gold{border-color:var(--yl-line-gold);color:var(--yl-gold-ink)}
.tag--moss{border-color:rgba(74,107,90,.45);color:var(--yl-moss)}
.tag--clay{border-color:rgba(176,106,74,.45);color:var(--yl-clay)}

/* ---------- 面层组件 ---------- */
.panel{border-radius:var(--radius);padding:clamp(18px,2.4vw,26px);border:1px solid var(--yl-line)}
.panel--solid{background:var(--yl-paper-2)}
.panel--glass{
  background:rgba(247,243,236,.62);
  backdrop-filter:blur(14px) saturate(140%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  border-color:var(--yl-line-gold);
  box-shadow:var(--shadow-soft);
}
.panel--dark{background:var(--yl-green);color:rgba(247,243,236,.86);border-color:rgba(201,162,39,.30)}
.panel--dark h2,.panel--dark h3{color:var(--yl-paper)}
.data-board{
  border-radius:var(--radius);padding:clamp(16px,2vw,22px);
  background:rgba(18,38,31,.74);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border:1px solid var(--yl-line-gold);
  color:rgba(247,243,236,.86);
}
.data-board__row{
  display:flex;align-items:baseline;justify-content:space-between;gap:16px;
  padding:10px 0;border-bottom:1px dashed rgba(247,243,236,.16);
}
.data-board__row:last-child{border-bottom:0}
.data-board__key{font-size:.84rem;color:rgba(247,243,236,.7)}
.data-board__val{font-family:var(--font-mono);color:var(--yl-gold-light)}
.timeline-strip{
  display:flex;gap:16px;overflow-x:auto;overscroll-behavior-x:contain;
  padding:6px 2px 18px;scroll-snap-type:x proximity;
  -webkit-overflow-scrolling:touch;
}
.timeline-strip > *{flex:0 0 min(320px,78vw);scroll-snap-align:start}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:.94rem;font-weight:700;letter-spacing:.02em;
  transition:background .22s var(--ease),color .22s var(--ease),box-shadow .22s var(--ease),transform .22s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--yl-red);color:#FFF8EC}
.btn--primary:hover{background:var(--yl-red-deep);box-shadow:0 0 0 2px var(--yl-gold)}
.btn--gold{background:linear-gradient(120deg,var(--yl-gold),var(--yl-gold-light));color:var(--yl-green)}
.btn--gold:hover{box-shadow:0 0 0 2px var(--yl-red)}
.btn--ghost{border-color:rgba(18,38,31,.22);color:var(--yl-green);background:transparent}
.btn--ghost:hover{border-color:var(--yl-gold);color:var(--yl-red)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:9px;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.14em;
  text-transform:uppercase;color:var(--yl-stone);
}
.breadcrumb a{transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--yl-neon)}
.breadcrumb__sep{color:var(--yl-gold)}

/* ---------- 主题筛选 ---------- */
.filter-bar{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.filter-chip{
  padding:8px 17px;border-radius:var(--radius-pill);
  border:1px solid rgba(18,38,31,.18);
  font-size:.84rem;font-weight:600;color:var(--yl-ink-soft);
  transition:background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.filter-chip:hover{border-color:var(--yl-gold);color:var(--yl-red)}
.filter-chip[aria-pressed="true"]{
  background:var(--yl-green);color:var(--yl-gold-light);border-color:var(--yl-gold);
}
.filter-count{font-family:var(--font-mono);font-size:.74rem;letter-spacing:.1em;color:var(--yl-stone)}
.is-filtered-out{display:none!important}

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--yl-line-gold);
  background:linear-gradient(140deg,var(--yl-green-soft),var(--yl-green));
}
.media-frame img,.media-frame video{width:100%;height:100%;object-fit:cover}
.media-frame--16x9{aspect-ratio:16/9}
.media-frame--4x3{aspect-ratio:4/3}
.media-frame--1x1{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;font-size:.8rem;line-height:1.6;
  color:var(--yl-paper);
  background:linear-gradient(180deg,rgba(18,38,31,0),rgba(18,38,31,.86));
}
.media-frame--placeholder{
  background-image:
    repeating-linear-gradient(56deg, rgba(201,162,39,.22) 0 1px, transparent 1px 26px),
    repeating-linear-gradient(-56deg, rgba(91,75,224,.18) 0 1px, transparent 1px 34px),
    linear-gradient(140deg,var(--yl-green-soft),var(--yl-green));
}

/* ---------- 动效钩子 ---------- */
html.js-reveal [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .42s var(--ease),transform .42s var(--ease);
}
html.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .footer-top{grid-template-columns:1fr;gap:32px}
}
@media (max-width:900px){
  .site-header{padding:12px clamp(10px,3vw,20px) 8px}
  .header-shell{flex-wrap:wrap;gap:10px;border-radius:26px;padding:10px 14px}
  .brand-note{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    order:3;flex-basis:100%;width:100%;margin-left:0;
    display:none;padding-top:10px;
    border-top:1px solid var(--yl-line-gold);
  }
  .site-nav[data-open]{display:block}
  .nav-list{
    display:flex;gap:6px;overflow-x:auto;padding-bottom:4px;
    scrollbar-width:none;-webkit-overflow-scrolling:touch;
  }
  .nav-list::-webkit-scrollbar{display:none}
  .nav-link{white-space:nowrap;padding:8px 12px;background:rgba(18,38,31,.05)}
  .nav-link[aria-current="page"]::after{left:12px;right:12px}
  .quick-rail{
    top:auto;bottom:14px;right:14px;transform:none;
    flex-direction:row;gap:8px;
  }
  .rail-cell{
    border-radius:var(--radius-pill);border-right:1px solid var(--yl-line-gold);
    padding:10px 15px;flex-direction:row;align-items:center;gap:8px;
  }
  .rail-cell:hover{transform:translateY(-3px)}
  body{padding-bottom:76px}
  .grid-12{grid-template-columns:repeat(6,1fr)}
  .col-main,.col-aside{grid-column:1 / -1}
}
@media (max-width:640px){
  h1{font-size:1.75rem}
  .display{font-size:clamp(2.1rem,9vw,3rem)}
  .footer-cols{grid-template-columns:1fr 1fr}
  .footer-contact{grid-template-columns:1fr}
  .footer-legal{justify-content:flex-start}
  .lede{font-size:1rem}
  .prose{max-width:none}
}
@media (max-width:400px){
  .footer-cols{grid-template-columns:1fr}
  .rail-cell__key{display:none}
}

/* ---------- 动效偏好 ---------- */
@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.js-reveal [data-reveal]{opacity:1;transform:none}
  .scroll-progress__fill{transition:none}
}