/* ==========================================================================
   亚洲城入口 · 共享样式表  /assets/site.css
   深墨蓝秩序底色 + 暖金权威强调 + 自然矿物色索引
   ========================================================================== */

:root{
  --ink-900:#0E1B2A;
  --ink-800:#16283D;
  --ink-700:#1E3450;
  --gold:#C9A227;
  --gold-deep:#B08D1C;
  --gold-soft:#E7C873;
  --celadon:#6F9E8E;
  --terracotta:#C4724A;
  --slate:#A9B8C9;
  --plum:#4B3A6B;
  --paper:#F5F1E8;
  --paper-warm:#EDE7DA;
  --paper-deep:#E2DACA;
  --rock:#6B6F73;
  --moss:#4F6B57;
  --clay:#D8C3A5;

  --font-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1220px;
  --gutter:clamp(18px,4vw,40px);
  --header-h:62px;
  --radius:14px;
  --radius-sm:8px;
  --hair-dark:rgba(169,184,201,.22);
  --hair-light:rgba(14,27,42,.12);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
}
body{
  margin:0;
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.8;
  color:var(--ink-900);
  background:var(--paper);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{font-family:var(--font-serif);font-weight:700;line-height:1.3;margin:0}
p,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
::selection{background:rgba(201,162,39,.28)}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;border-radius:6px}

/* ---------- 跳至主要内容 ---------- */
.skip-link{
  position:fixed;
  left:16px;
  top:0;
  z-index:200;
  padding:11px 18px;
  border-radius:0 0 10px 10px;
  background:var(--gold);
  color:var(--ink-900);
  font-size:14px;
  font-weight:600;
  letter-spacing:.04em;
  transform:translateY(-140%);
  transition:transform .22s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 头部 · 紧凑命令栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--ink-900);
  color:#E9EEF4;
  border-bottom:1px solid rgba(201,162,39,.32);
}
.header-shell{
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
  min-height:var(--header-h);
  display:flex;
  align-items:center;
  gap:18px;
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  text-decoration:none;
  color:inherit;
}
.brand-mark{
  width:32px;
  height:32px;
  flex:0 0 auto;
  display:grid;
  place-items:center;
  border:1px solid rgba(201,162,39,.55);
  border-radius:8px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--gold-soft);
  background:linear-gradient(145deg,rgba(201,162,39,.22),rgba(201,162,39,.02));
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{
  font-family:var(--font-serif);
  font-weight:700;
  font-size:1.0625rem;
  letter-spacing:.08em;
  line-height:1.25;
  color:#F2EFE7;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.16em;
  line-height:1.5;
  color:rgba(169,184,201,.85);
}

/* 命令栏导航 */
.cmd-nav{margin-left:auto;display:flex;align-items:center}
.cmd-list{display:flex;align-items:center;gap:2px}
.cmd-item{display:block}
.cmd-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:12px;
  border-radius:6px;
  font-size:.875rem;
  color:#BECAD8;
  white-space:nowrap;
  transition:color .18s var(--ease),background-color .18s var(--ease);
}
.cmd-link:hover{color:var(--gold-soft);background:rgba(201,162,39,.10)}
.cmd-idx{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.06em;
  color:rgba(169,184,201,.72);
  transition:color .18s var(--ease);
}
.cmd-link:hover .cmd-idx{color:var(--gold)}
.cmd-label{line-height:1.2}
.cmd-link[aria-current="page"]{color:var(--gold-soft)}
.cmd-link[aria-current="page"] .cmd-idx{color:var(--gold)}
.cmd-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:2px;
  border-radius:2px;
  background:var(--gold);
}

/* 右侧工具区 */
.header-utility{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.lang-tag{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:rgba(169,184,201,.9);
  border:1px solid rgba(169,184,201,.3);
  border-radius:999px;
  padding:4px 11px;
  white-space:nowrap;
}
.cmd-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:9px 17px;
  border-radius:999px;
  background:linear-gradient(135deg,var(--gold),var(--gold-deep));
  color:#111C29;
  font-size:.875rem;
  font-weight:600;
  white-space:nowrap;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.cmd-cta:hover{transform:translateY(-1px);box-shadow:0 8px 22px rgba(201,162,39,.32)}

/* 移动端菜单按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:8px 14px;
  border:1px solid rgba(169,184,201,.34);
  border-radius:999px;
  color:#DCE4EC;
  font-size:.875rem;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-soft)}
.nav-toggle-icon{position:relative;width:16px;height:12px;display:inline-block;flex:0 0 auto}
.nav-toggle-icon::before,
.nav-toggle-icon::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  border-radius:2px;
  background:currentColor;
  transition:transform .24s var(--ease),top .24s var(--ease),bottom .24s var(--ease);
}
.nav-toggle-icon::before{top:2px}
.nav-toggle-icon::after{bottom:2px}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before{top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after{bottom:5px;transform:rotate(-45deg)}
.nav-toggle-text{line-height:1}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  background:var(--ink-900);
  color:#BECAD8;
  border-top:1px solid rgba(201,162,39,.32);
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    radial-gradient(circle at 10% 0%,rgba(201,162,39,.11),transparent 42%),
    radial-gradient(circle at 90% 100%,rgba(111,158,142,.13),transparent 46%),
    repeating-linear-gradient(90deg,rgba(169,184,201,.06) 0 1px,transparent 1px 120px);
}
.footer-shell{
  position:relative;
  max-width:var(--shell);
  margin:0 auto;
  padding:56px var(--gutter) 34px;
  display:grid;
  grid-template-columns:minmax(220px,1fr) minmax(0,2.1fr);
  gap:44px;
}
.footer-brand{min-width:0}
.footer-tagline{
  margin-top:15px;
  max-width:26em;
  font-size:.9375rem;
  line-height:1.85;
  color:rgba(190,202,216,.85);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr)) minmax(0,1.35fr);
  gap:32px;
}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--gold-soft);
  margin-bottom:15px;
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{
  display:inline-block;
  font-size:.9375rem;
  color:#BECAD8;
  padding-bottom:2px;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-list a:hover{color:var(--gold-soft);border-bottom-color:rgba(201,162,39,.55)}
.footer-list--contact{gap:15px}
.footer-label{
  display:block;
  margin-bottom:5px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:rgba(169,184,201,.78);
}
.footer-text{font-size:.9375rem;line-height:1.75;color:#BECAD8}
.copy-btn{
  display:inline-block;
  max-width:100%;
  padding:7px 13px;
  border:1px dashed rgba(201,162,39,.45);
  border-radius:8px;
  background:rgba(255,255,255,.05);
  color:#EDE7DA;
  font-family:var(--font-mono);
  font-size:.875rem;
  text-align:left;
  word-break:break-all;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.copy-btn:hover{background:rgba(201,162,39,.14);border-color:var(--gold)}
.copy-btn.is-copied{background:rgba(111,158,142,.24);border-color:var(--celadon);color:#DDEBE5}
.footer-base{
  position:relative;
  max-width:var(--shell);
  margin:0 auto;
  padding:22px var(--gutter) 34px;
  display:flex;
  flex-wrap:wrap;
  align-items:flex-start;
  justify-content:space-between;
  gap:14px 32px;
  border-top:1px solid rgba(169,184,201,.16);
}
.footer-legal{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:rgba(169,184,201,.85);
}
.footer-note{
  max-width:62ch;
  font-size:.8125rem;
  line-height:1.8;
  color:rgba(169,184,201,.72);
}

/* ---------- 布局容器 ---------- */
.shell{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--gutter)}
.section{padding:clamp(48px,7vw,96px) 0}
.section--tight{padding:clamp(30px,4vw,56px) 0}
.section--band{background:var(--paper-warm)}
.section--ink{background:var(--ink-900);color:#E4EAF1}
.section--ink .h1,.section--ink .h2,.section--ink .h3{color:#F1EDE4}
.section--ink .prose p{color:#C7D2DE}
.section--ink .eyebrow{color:var(--slate)}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.split{
  display:grid;
  grid-template-columns:minmax(0,7fr) minmax(0,4fr);
  gap:clamp(24px,4vw,56px);
  align-items:start;
}

/* ---------- 文字体系 ---------- */
.h-display{
  font-family:var(--font-serif);
  font-weight:800;
  font-size:clamp(2.25rem,7vw,4.5rem);
  line-height:1.06;
  letter-spacing:.01em;
}
.h1{font-size:clamp(1.75rem,4vw,2.5rem);line-height:1.24}
.h2{font-size:clamp(1.375rem,2.6vw,1.875rem);line-height:1.3}
.h3{font-size:1.25rem;line-height:1.4}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--rock);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--gold);flex:0 0 auto}
.lead{font-size:1.125rem;line-height:1.9;color:#33475C}
.prose{max-width:68ch}
.prose p{margin-bottom:1.15em;font-size:1.0625rem;line-height:1.85;color:#26374A}
.prose p:last-child{margin-bottom:0}
.prose h2{margin:2em 0 .6em}
.prose h3{margin:1.6em 0 .5em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:1px solid transparent;
  border-radius:999px;
  font-size:.9375rem;
  font-weight:600;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),
             background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--gold{background:linear-gradient(135deg,var(--gold),var(--gold-deep));color:#111C29}
.btn--gold:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(201,162,39,.30)}
.btn--ghost{border-color:rgba(169,184,201,.42);color:inherit;background:transparent}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold-soft)}
.btn--ink{background:var(--ink-900);color:var(--paper)}
.btn--ink:hover{transform:translateY(-1px);box-shadow:0 10px 26px rgba(14,27,42,.28)}

/* ---------- 卡片 / 标签 / 分隔线 ---------- */
.card{
  position:relative;
  padding:clamp(20px,3vw,30px);
  border:1px solid var(--hair-light);
  border-radius:var(--radius);
  background:#FBF8F1;
}
.card--glass{
  background:linear-gradient(150deg,rgba(255,255,255,.14),rgba(255,255,255,.05));
  border:1px solid rgba(201,162,39,.30);
  color:#E6ECF3;
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.card--glow{transition:box-shadow .24s var(--ease),border-color .24s var(--ease)}
.card--glow:hover{
  border-color:rgba(201,162,39,.55);
  box-shadow:0 0 0 1px rgba(201,162,39,.35),0 18px 42px -20px rgba(201,162,39,.55);
}
.card__index{
  display:block;
  margin-bottom:12px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.18em;
  color:var(--gold);
}
.card--glass .card__index{color:var(--gold-soft)}

.tag{
  display:inline-flex;
  align-items:center;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid rgba(169,184,201,.45);
  background:rgba(255,255,255,.5);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--rock);
}
.tag--gold{color:#7A6212;border-color:rgba(201,162,39,.5);background:rgba(201,162,39,.12)}
.tag--celadon{color:#2F5B4C;border-color:rgba(111,158,142,.5);background:rgba(111,158,142,.14)}
.tag--terracotta{color:#8A4526;border-color:rgba(196,114,74,.5);background:rgba(196,114,74,.13)}
.tag--slate{color:#3C5168;border-color:rgba(169,184,201,.6);background:rgba(169,184,201,.20)}
.tag--plum{color:#3F3159;border-color:rgba(75,58,107,.45);background:rgba(75,58,107,.12)}

.rule{
  height:1px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,var(--gold),rgba(201,162,39,0));
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--rock);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:rgba(107,111,115,.6)}
.breadcrumb a{color:var(--rock)}
.breadcrumb a:hover{color:var(--gold)}
.breadcrumb [aria-current="page"]{color:var(--ink-900)}
.breadcrumb--ink{color:var(--slate)}
.breadcrumb--ink a{color:var(--slate)}
.breadcrumb--ink a:hover{color:var(--gold-soft)}
.breadcrumb--ink [aria-current="page"]{color:var(--gold-soft)}
.breadcrumb--ink li + li::before{color:rgba(169,184,201,.55)}

/* ---------- 章节索引 ---------- */
.side-index{
  position:sticky;
  top:calc(var(--header-h) + 22px);
  padding-left:18px;
  border-left:1px solid var(--hair-light);
}
.side-index__title{
  margin-bottom:13px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--rock);
}
.side-index ol{display:flex;flex-direction:column;gap:3px}
.side-index a{
  display:block;
  margin-left:-12px;
  padding:6px 0 6px 10px;
  border-left:2px solid transparent;
  font-size:.9375rem;
  color:#4A5560;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.side-index a:hover{color:var(--ink-900)}
.side-index a[aria-current="true"]{color:var(--ink-900);border-left-color:var(--gold);font-weight:600}

/* ---------- 图片容器 ---------- */
.media-figure{display:block}
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--hair-light);
  border-radius:var(--radius);
  background:linear-gradient(140deg,var(--paper-warm),var(--paper-deep));
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.30;
  background-image:repeating-linear-gradient(115deg,rgba(255,255,255,.16) 0 2px,transparent 2px 9px);
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--std{aspect-ratio:4/3}
.media-frame--square{aspect-ratio:1/1}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--free{aspect-ratio:auto;min-height:180px}
.media-frame--ink{
  background:linear-gradient(140deg,var(--ink-800),var(--ink-900));
  border-color:rgba(201,162,39,.30);
}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  color:var(--rock);
}

/* ---------- 动效与数据状态 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
  background:linear-gradient(90deg,var(--celadon),var(--gold),var(--gold-soft));
}

.to-top{
  position:fixed;
  right:22px;
  bottom:22px;
  z-index:80;
  width:52px;
  height:52px;
  border-radius:50%;
  border:1px solid rgba(201,162,39,.5);
  background:var(--ink-900);
  color:var(--gold-soft);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  box-shadow:0 12px 28px -12px rgba(14,27,42,.7);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s,color .2s var(--ease),border-color .2s var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--gold);color:#fff}

/* ---------- 响应式 ---------- */
@media (max-width:1040px){
  .lang-tag{display:none}
  .cmd-link{padding:12px 9px;font-size:.8125rem}
  .cmd-link[aria-current="page"]::after{left:9px;right:9px}
}

@media (max-width:980px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  .site-header{position:sticky}
  .cmd-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    margin-left:0;
    display:block;
    background:var(--ink-800);
    border-top:1px solid rgba(201,162,39,.22);
    max-height:0;
    overflow:hidden;
    transition:max-height .32s var(--ease);
  }
  .cmd-nav[data-open]{
    max-height:min(78vh,520px);
    overflow-y:auto;
    box-shadow:0 24px 40px -22px rgba(0,0,0,.7);
  }
  .cmd-list{flex-direction:column;align-items:stretch;gap:0;padding:8px var(--gutter) 20px}
  .cmd-item{display:block}
  .cmd-link{
    justify-content:flex-start;
    padding:15px 4px;
    border-radius:0;
    border-bottom:1px solid rgba(169,184,201,.14);
    font-size:.9375rem;
  }
  .cmd-link:hover{background:rgba(201,162,39,.06)}
  .cmd-link[aria-current="page"]::after{
    left:0;
    right:auto;
    top:15px;
    bottom:15px;
    width:2px;
    height:auto;
  }
  .nav-toggle{display:inline-flex}
  .split{grid-template-columns:1fr}
  .side-index{position:static;top:auto}
  .footer-shell{grid-template-columns:1fr;gap:34px;padding-top:44px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px}
  .footer-col--contact{grid-column:1 / -1}
}

@media (max-width:620px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .brand-sub{display:none}
  .brand-name{font-size:1rem}
  .cmd-cta{padding:8px 14px;font-size:.8125rem}
  .footer-cols{grid-template-columns:1fr}
  .footer-col--contact{grid-column:auto}
  .footer-base{flex-direction:column}
}

@media (max-width:560px){
  .to-top{right:14px;bottom:14px;width:46px;height:46px;font-size:10px}
}

/* ---------- 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;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
}