/* =============================================================
   葡京手机版 — 共享站点样式 /assets/site.css
   设计语汇：居中刊头 · Bento 索引 · 细线网格 · 深葡紫/暖金
   ============================================================= */

:root{
  --purple:#2B123D;
  --night:#1A0B26;
  --amber:#D9A441;
  --amber-soft:#F2D18B;
  --celadon:#8FB8A8;
  --cream:#F6F0E6;
  --violet-gray:#6E5B7A;
  --ember:#C8553D;
  --ink:#211A24;
  --paper:#FFFFFF;

  --hair:rgba(110,91,122,.30);
  --hair-dark:rgba(246,240,230,.16);
  --hair-amber:rgba(217,164,65,.55);

  --wrap:1240px;
  --gutter:clamp(1rem,4vw,3rem);
  --space-section:clamp(3.5rem,7vw,6.5rem);

  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:9rem;
}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background:var(--cream);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:800;line-height:1.15;letter-spacing:.02em}
a{color:inherit}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(217,164,65,.35);color:var(--night)}
:focus-visible{outline:2px solid var(--amber);outline-offset:3px}
#main-content:focus{outline:none}
#main-content:focus-visible{outline:2px solid var(--amber);outline-offset:-4px}

/* ---------- 无障碍跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-120px;left:1rem;
  z-index:300;
  display:inline-block;
  padding:.7rem 1.1rem;
  background:var(--amber);
  color:var(--night);
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  border:1px solid var(--night);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:.55rem}

/* ---------- 内容容器与区块 ---------- */
.u-container{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{padding-block:var(--space-section)}
.section--tight{padding-block:clamp(2rem,4vw,3.25rem)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:1rem 1.5rem;
  padding-bottom:1rem;
  margin-bottom:clamp(1.5rem,3vw,2.5rem);
  border-bottom:1px solid var(--hair);
}

/* ---------- 排版组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.28em;
  text-transform:uppercase;
  color:var(--violet-gray);
}
.eyebrow::before{content:"";width:1.7rem;height:1px;background:currentColor}
.display{
  font-size:clamp(2.4rem,6.4vw,4.6rem);
  font-weight:800;
  line-height:1.02;
  letter-spacing:.02em;
  color:var(--purple);
}
.section-title{
  font-size:clamp(1.35rem,2.6vw,2rem);
  font-weight:800;
  letter-spacing:.02em;
  color:var(--purple);
}
.lede{
  max-width:44ch;
  font-size:clamp(.98rem,1.4vw,1.1rem);
  line-height:1.8;
  color:var(--violet-gray);
}
.rule{
  height:1px;
  border:0;
  background:var(--hair);
  margin-block:clamp(1.5rem,3vw,2.5rem);
}

/* ---------- 展览标签 ---------- */
.index-tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.28rem .55rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--violet-gray);
  background:rgba(255,255,255,.45);
  border:1px solid var(--hair);
  transition:border-color .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.index-tag--amber{
  color:#7d5a12;
  background:rgba(217,164,65,.14);
  border-color:var(--hair-amber);
}
.index-tag--celadon{
  color:#365f55;
  background:rgba(143,184,168,.18);
  border-color:rgba(143,184,168,.72);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.74rem 1.25rem;
  font-size:.86rem;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1;
  border:1px solid transparent;
  background:none;
  color:inherit;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .22s var(--ease),color .22s var(--ease),
             border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn--amber{
  color:var(--night);
  background:linear-gradient(100deg,#D9A441 0%,#F2D18B 55%,#D9A441 100%);
  border-color:var(--amber);
}
.btn--amber:hover,
.btn--amber:focus-visible{
  background:linear-gradient(100deg,#F2D18B 0%,#D9A441 100%);
}
.btn--ghost{
  color:var(--cream);
  border-color:rgba(246,240,230,.38);
}
.btn--ghost:hover,
.btn--ghost:focus-visible{
  color:var(--amber-soft);
  border-color:var(--amber);
}
.btn--ink{
  color:var(--purple);
  border-color:rgba(43,18,61,.28);
}
.btn--ink:hover,
.btn--ink:focus-visible{
  color:var(--cream);
  background:var(--purple);
  border-color:var(--purple);
}

/* ---------- 卡片与说明牌 ---------- */
.card{
  padding:clamp(1rem,2vw,1.5rem);
  background:var(--paper);
  border:1px solid var(--hair);
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.card:hover,
.card:focus-within{
  border-color:var(--amber);
  background:#fffdf7;
}
.card__label{
  display:block;
  margin-bottom:.6rem;
  font-family:var(--font-mono);
  font-size:.64rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--violet-gray);
}
.card__title{
  font-size:1.02rem;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--purple);
}
.plate{
  display:flex;
  flex-wrap:wrap;
  gap:.4rem 1.25rem;
  padding:.85rem 1rem;
  background:rgba(255,255,255,.6);
  border:1px solid var(--hair);
  border-left:3px solid var(--amber);
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--violet-gray);
}

/* ---------- 网格 ---------- */
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(1rem,2vw,1.75rem);
}

/* ---------- 图片容器基础规则 ---------- */
.media-frame{
  position:relative;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background:
    linear-gradient(150deg,#2B123D 0%,#1A0B26 58%,#3A1A4F 100%);
  border:1px solid var(--hair-amber);
}
.media-frame::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(90deg,rgba(217,164,65,.20) 1px,transparent 1px),
    linear-gradient(0deg,rgba(143,184,168,.16) 1px,transparent 1px);
  background-size:56px 56px,56px 56px;
  opacity:.55;
}
.media-frame img{
  position:relative;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__caption{
  display:block;
  margin-top:.55rem;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--violet-gray);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  font-size:.75rem;
  letter-spacing:.06em;
  color:var(--violet-gray);
}
.breadcrumbs ol{
  display:flex;
  flex-wrap:wrap;
  gap:.35rem;
}
.breadcrumbs li{display:inline-flex;align-items:center}
.breadcrumbs li + li::before{
  content:"/";
  margin-right:.35rem;
  color:rgba(110,91,122,.5);
}
.breadcrumbs a{
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.breadcrumbs a:hover,
.breadcrumbs a:focus-visible{
  color:var(--purple);
  border-bottom-color:var(--amber);
}

/* ---------- 正文排版 ---------- */
.prose{
  max-width:44rem;
  font-size:1rem;
  line-height:1.85;
  color:var(--ink);
}
.prose > * + *{margin-top:1.1em}
.prose h2{
  margin-top:2.2em;
  font-size:clamp(1.25rem,2.2vw,1.6rem);
  color:var(--purple);
  padding-bottom:.45rem;
  border-bottom:1px solid var(--hair);
}
.prose h3{
  margin-top:1.8em;
  font-size:1.1rem;
  color:var(--purple);
}
.prose ul,
.prose ol{padding-left:1.15rem}
.prose ul{list-style:square}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose a{
  color:var(--purple);
  text-decoration:underline;
  text-decoration-color:rgba(217,164,65,.85);
  text-underline-offset:.22em;
}
.prose strong{color:var(--purple)}

/* ---------- 显现动画 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(14px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
[data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 返回顶部 ---------- */
.to-top{
  position:fixed;
  right:clamp(.9rem,3vw,2rem);
  bottom:clamp(.9rem,3vw,2rem);
  z-index:80;
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.62rem .9rem;
  background:var(--purple);
  color:var(--amber-soft);
  border:1px solid var(--hair-amber);
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),
             visibility .25s var(--ease),background-color .2s var(--ease);
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:#3B1A52;border-color:var(--amber)}

/* =============================================================
   页头：居中刊头导航
   ============================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  color:var(--cream);
  background:linear-gradient(180deg,#2B123D 0%,#240F34 100%);
  border-bottom:1px solid var(--hair-amber);
}
.header-progress{
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:rgba(246,240,230,.14);
  pointer-events:none;
}
.header-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--amber) 0%,var(--amber-soft) 100%);
  transition:width .15s linear;
}
.masthead{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
  padding-top:.55rem;
}
.masthead__bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem 1.5rem;
  padding-block:.85rem;
}

/* 品牌署名 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:.75rem;
  color:var(--cream);
  text-decoration:none;
}
.brand__mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  flex:0 0 auto;
  font-size:1.1rem;
  font-weight:800;
  letter-spacing:.02em;
  color:var(--amber-soft);
  border:1px solid var(--hair-amber);
  background:linear-gradient(140deg,rgba(217,164,65,.24),rgba(217,164,65,0));
  transition:border-color .22s var(--ease),background-color .22s var(--ease);
}
.brand:hover .brand__mark,
.brand:focus-visible .brand__mark{
  border-color:var(--amber);
  background:linear-gradient(140deg,rgba(217,164,65,.4),rgba(217,164,65,.05));
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{
  font-size:1.04rem;
  font-weight:800;
  letter-spacing:.1em;
}
.brand__sub{
  margin-top:.32rem;
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:rgba(242,209,139,.72);
}

/* 右侧动作区 */
.masthead__actions{
  display:flex;
  align-items:center;
  gap:.6rem;
}
.masthead__cta{
  padding:.7rem 1.1rem;
  white-space:nowrap;
  animation:ctaPulse 4.8s ease-in-out infinite;
}
@keyframes ctaPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(217,164,65,.42)}
  55%{box-shadow:0 0 0 7px rgba(217,164,65,0)}
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.5rem;
  padding:.55rem .75rem;
  color:var(--cream);
  background:transparent;
  border:1px solid rgba(246,240,230,.38);
  font-size:.78rem;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover,
.nav-toggle:focus-visible{
  color:var(--amber-soft);
  border-color:var(--amber);
}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bars span{
  display:block;
  height:1.5px;
  background:var(--amber-soft);
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(4.5px) 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(-4.5px) rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* 居中栏目索引 */
.primary-nav{
  border-top:1px solid var(--hair-dark);
}
.primary-nav__list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:stretch;
}
.primary-nav__item{display:flex}
.primary-nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:.45rem;
  padding:.82rem clamp(.75rem,2vw,1.55rem);
  font-size:.92rem;
  font-weight:600;
  letter-spacing:.1em;
  color:rgba(246,240,230,.82);
  text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.primary-nav__link::after{
  content:"";
  position:absolute;
  left:clamp(.75rem,2vw,1.55rem);
  right:clamp(.75rem,2vw,1.55rem);
  bottom:.42rem;
  height:1px;
  background:var(--amber);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .25s var(--ease),height .2s var(--ease);
}
.primary-nav__link:hover,
.primary-nav__link:focus-visible{
  color:var(--amber-soft);
  background:rgba(246,240,230,.05);
}
.primary-nav__link:hover::after,
.primary-nav__link:focus-visible::after{transform:scaleX(1)}
[data-nav] a[aria-current="page"],
.primary-nav__link[aria-current="page"]{
  color:var(--amber-soft);
  background:rgba(217,164,65,.08);
}
[data-nav] a[aria-current="page"]::after,
.primary-nav__link[aria-current="page"]::after{
  transform:scaleX(1);
  height:2px;
}
.primary-nav__num{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.1em;
  color:rgba(143,184,168,.85);
}

/* 快速索引带 */
.nav-index{
  display:flex;
  align-items:center;
  gap:.75rem;
  padding-block:.5rem .7rem;
  border-top:1px solid rgba(246,240,230,.1);
  overflow-x:auto;
  scrollbar-width:thin;
}
.nav-index__label{
  flex:0 0 auto;
  padding:.2rem .45rem;
  font-family:var(--font-mono);
  font-size:.58rem;
  letter-spacing:.3em;
  text-transform:uppercase;
  color:rgba(143,184,168,.95);
  border:1px solid rgba(143,184,168,.42);
}
.nav-index__list{
  display:flex;
  gap:.3rem;
  flex:0 1 auto;
}
.nav-index__link{
  display:inline-block;
  padding:.26rem .55rem;
  font-size:.73rem;
  letter-spacing:.1em;
  white-space:nowrap;
  text-decoration:none;
  color:rgba(246,240,230,.7);
  border:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-index__link:hover,
.nav-index__link:focus-visible{
  color:var(--amber-soft);
  border-color:var(--hair-amber);
  background:rgba(217,164,65,.1);
}

/* =============================================================
   页脚
   ============================================================= */
.site-footer{
  position:relative;
  color:rgba(246,240,230,.78);
  background:
    linear-gradient(180deg,#1A0B26 0%,#220E32 62%,#1A0B26 100%);
  border-top:1px solid var(--hair-amber);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,transparent,rgba(217,164,65,.8),rgba(143,184,168,.6),transparent);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.55fr 1fr 1.25fr 1fr;
  gap:clamp(1.5rem,3vw,3rem);
  padding-block:clamp(2.5rem,6vw,4.5rem) clamp(2rem,4vw,3rem);
}
.footer-col{min-width:0}
.footer-col--brand{padding-bottom:.5rem}
.footer-brand{
  display:inline-flex;
  align-items:center;
  gap:.7rem;
  margin-bottom:1rem;
  color:var(--cream);
  text-decoration:none;
}
.footer-brand__mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  flex:0 0 auto;
  font-size:.98rem;
  font-weight:800;
  color:var(--amber-soft);
  border:1px solid var(--hair-amber);
  background:linear-gradient(140deg,rgba(217,164,65,.22),rgba(217,164,65,0));
  transition:border-color .2s var(--ease);
}
.footer-brand:hover .footer-brand__mark{border-color:var(--amber)}
.footer-brand__name{
  font-size:1rem;
  font-weight:800;
  letter-spacing:.1em;
}
.footer-note{
  max-width:34ch;
  font-size:.85rem;
  line-height:1.85;
  color:rgba(246,240,230,.62);
}
.footer-title{
  margin-bottom:1.1rem;
  padding-bottom:.6rem;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--amber-soft);
  border-bottom:1px solid var(--hair-dark);
}
.footer-list{
  display:grid;
  gap:.62rem;
}
.footer-list--meta{margin-top:1.2rem}
.footer-list a{
  display:inline-block;
  font-size:.88rem;
  color:rgba(246,240,230,.8);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.footer-list a:hover,
.footer-list a:focus-visible{
  color:var(--amber-soft);
  border-bottom-color:var(--amber);
}
.footer-link-strong{
  font-weight:700;
  color:var(--amber-soft) !important;
}
.footer-key{
  display:block;
  margin-bottom:.12rem;
  font-family:var(--font-mono);
  font-size:.58rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(143,184,168,.88);
}
.footer-value{
  display:block;
  font-size:.85rem;
  line-height:1.7;
  color:rgba(246,240,230,.86);
  word-break:break-word;
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.6rem 1.5rem;
  padding-block:1.05rem;
  border-top:1px solid var(--hair-dark);
  font-size:.74rem;
  letter-spacing:.06em;
  color:rgba(246,240,230,.55);
}
.footer-copy,
.footer-icp{margin:0}
.footer-icp{font-family:var(--font-mono);letter-spacing:.1em}

/* =============================================================
   响应式
   ============================================================= */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:1.75rem}
  .footer-col--brand{grid-column:1 / -1}
}

@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .primary-nav{display:none}
  .primary-nav[data-open]{display:block}
  .primary-nav__list{
    flex-direction:column;
    justify-content:flex-start;
    padding-block:.35rem .6rem;
  }
  .primary-nav__item{width:100%}
  .primary-nav__link{
    width:100%;
    padding:.85rem .15rem;
    border-bottom:1px solid rgba(246,240,230,.1);
    font-size:.95rem;
  }
  .primary-nav__link::after{
    left:0;
    right:auto;
    width:2.2rem;
    bottom:.5rem;
  }
  .primary-nav__link[aria-current="page"]{background:rgba(217,164,65,.1)}
}

@media (max-width:820px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col--brand{grid-column:1 / -1}
}

@media (max-width:700px){
  .nav-index{display:none}
  .brand__mark{width:38px;height:38px;font-size:.98rem}
  .brand__name{font-size:.96rem}
  .brand__sub{letter-spacing:.18em;font-size:.55rem}
  .masthead__cta{padding:.6rem .8rem;font-size:.78rem;letter-spacing:.04em}
  .nav-toggle{padding:.5rem .62rem;font-size:.74rem}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
  .display{font-size:clamp(2rem,9vw,2.8rem)}
}

@media (max-width:560px){
  .footer-grid{grid-template-columns:1fr}
  .footer-base{justify-content:flex-start}
  .masthead__bar{gap:.75rem}
  .nav-toggle__label{display:none}
}

/* ---------- 动效降级 ---------- */
@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-behavior:auto !important;
  }
  .masthead__cta{animation:none;box-shadow:none}
  [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
}