/* ============================================================
   亚洲城指南 · 全站共享样式 site.css
   顺序：reset → 变量 → 基础排版 → 页头 → 页脚 → 组件 → 响应式
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote{margin:0;}
ul,ol{padding:0;}
img,svg{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}
[hidden]{display:none !important;}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0B1220;
  --ink-deep:#08101B;
  --blue:#245C8A;
  --blue-deep:#173B5C;
  --jade:#2A9D8F;
  --jade-light:#7FD1C4;
  --clay:#D97742;
  --cyan:#5FE0D0;
  --paper:#F4F1EA;
  --black:#101010;
  --slate:#8FA3B5;

  --font-display:"Source Han Sans SC","Noto Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell-max:1280px;
  --prose-max:760px;
  --gutter:24px;
  --border-w:3px;
  --hard-shadow:8px 8px 0 var(--ink-deep);
  --hard-shadow-sm:4px 4px 0 var(--ink-deep);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:240ms;
}

/* ---------- 3. 基础排版与底色 ---------- */
html{scroll-behavior:smooth;}
body{
  min-height:100vh;
  background-color:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.012em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  background-image:
    repeating-linear-gradient(118deg, rgba(36,92,138,.075) 0 2px, transparent 2px 28px),
    repeating-linear-gradient(-32deg, rgba(42,157,143,.055) 0 2px, transparent 2px 38px);
  background-attachment:fixed;
}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.06;}
h1{font-size:clamp(2.4rem,5vw,5rem);line-height:1.02;letter-spacing:.05em;}
h2{font-size:clamp(1.7rem,3.2vw,2.6rem);letter-spacing:.06em;}
h3{font-size:clamp(1.18rem,1.8vw,1.45rem);letter-spacing:.045em;}
h4{font-size:1.05rem;letter-spacing:.04em;}
strong{font-weight:900;color:var(--jade-light);}
::selection{background:var(--cyan);color:var(--ink);}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;}

#main-content{scroll-margin-top:170px;}
:target{scroll-margin-top:170px;}

/* 跳转链接 */
.skip-link{
  position:absolute;
  left:16px;
  top:-90px;
  z-index:200;
  display:inline-block;
  padding:10px 18px;
  background:var(--cyan);
  color:var(--ink);
  font-weight:900;
  letter-spacing:.1em;
  border:2px solid var(--ink);
  box-shadow:var(--hard-shadow-sm);
  transition:top 180ms var(--ease);
}
.skip-link:focus{top:14px;}

/* ---------- 4. 页头：刊物报头 ---------- */
.site-header{
  position:-webkit-sticky;
  position:sticky;
  top:0;
  z-index:80;
  color:var(--paper);
  background:linear-gradient(180deg,#1D4B73 0%,var(--blue-deep) 42%,var(--ink) 100%);
  border-bottom:var(--border-w) solid var(--blue);
  box-shadow:0 8px 0 rgba(8,16,27,.55);
}
.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:4px;
  overflow:hidden;
  background:rgba(143,163,181,.18);
  pointer-events:none;
}
.header-progress::after{
  content:"";
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(var(--progress,0));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--jade) 0%,var(--cyan) 58%,var(--clay) 100%);
  transition:transform 120ms linear;
}

.masthead{
  position:relative;
  width:100%;
  max-width:var(--shell-max);
  margin:0 auto;
  padding:14px var(--gutter) 0;
}

.masthead-top{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:16px;
  padding-bottom:12px;
  transition:padding var(--dur) var(--ease);
}
.masthead-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--slate);
  line-height:1.5;
}
.masthead-meta--right{
  display:flex;
  justify-content:flex-end;
  text-align:right;
}
.edition{
  display:inline-block;
  padding:3px 9px;
  border:2px solid var(--jade);
  color:var(--jade-light);
  font-size:12px;
  letter-spacing:.08em;
  background:rgba(42,157,143,.12);
  white-space:nowrap;
}
.masthead-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  color:var(--paper);
  transition:transform 180ms var(--ease);
}
.masthead-brand:hover{transform:translateY(-2px);}
.brand-mark{
  display:grid;
  place-items:center;
  width:44px;
  height:44px;
  flex:none;
  background:var(--clay);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:900;
  font-size:20px;
  border:3px solid var(--paper);
  box-shadow:4px 4px 0 var(--cyan);
  transform:rotate(-3deg);
  transition:width var(--dur) var(--ease),height var(--dur) var(--ease),font-size var(--dur) var(--ease);
}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.35rem,2.3vw,1.95rem);
  letter-spacing:.14em;
  line-height:1.1;
  white-space:nowrap;
}

.masthead-rule{
  display:flex;
  align-items:center;
  gap:10px;
  padding:4px 0 8px;
}
.rule-line{
  flex:1;
  height:2px;
  background:linear-gradient(90deg,transparent,var(--blue) 20%,var(--blue) 80%,transparent);
}
.rule-dot{
  flex:none;
  width:9px;
  height:9px;
  background:var(--clay);
  transform:rotate(45deg);
  box-shadow:0 0 0 3px rgba(217,119,66,.22);
}

.primary-nav{
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:12px;
  padding:0 0 14px;
}
.nav-list{
  grid-column:2;
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:2px;
  list-style:none;
}
.nav-list a{
  display:inline-block;
  padding:7px 13px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--paper);
  border:2px solid transparent;
  transition:color 180ms var(--ease),background-color 180ms var(--ease),
             border-color 180ms var(--ease),transform 180ms var(--ease);
}
.nav-list a:hover{
  color:var(--ink);
  background:var(--cyan);
  border-color:var(--cyan);
  transform:translateY(-2px);
}
.nav-list a[aria-current="page"]{
  color:var(--ink);
  background:var(--paper);
  border-color:var(--clay);
  box-shadow:4px 4px 0 var(--blue);
}
.nav-list a[aria-current="page"]:hover{
  background:var(--cyan);
  border-color:var(--ink);
}
.nav-cta{grid-column:3;justify-self:end;}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:8px 16px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:900;
  letter-spacing:.1em;
  line-height:1.4;
  border:2px solid var(--ink);
  transition:transform 180ms var(--ease),box-shadow 180ms var(--ease),
             background-color 180ms var(--ease),color 180ms var(--ease);
}
.btn--accent{
  background:var(--clay);
  color:var(--ink);
  box-shadow:4px 4px 0 var(--cyan);
}
.btn--accent:hover{
  background:var(--cyan);
  color:var(--ink);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 var(--paper);
}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink);}

.nav-toggle{
  display:none;
  position:absolute;
  top:14px;
  right:var(--gutter);
  z-index:3;
  align-items:center;
  gap:10px;
  padding:8px 12px;
  background:var(--ink);
  color:var(--paper);
  font-size:13px;
  font-weight:900;
  letter-spacing:.14em;
  border:2px solid var(--jade);
  box-shadow:var(--hard-shadow-sm);
}
.nav-toggle:hover{border-color:var(--cyan);}
.nav-toggle-box{display:grid;gap:4px;width:20px;}
.nav-toggle-box span{
  display:block;
  height:2px;
  background:var(--cyan);
  transition:transform 180ms var(--ease),opacity 180ms var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle-box span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* 压缩态 */
.site-header[data-compact] .masthead{padding-top:8px;}
.site-header[data-compact] .masthead-top{padding-bottom:6px;}
.site-header[data-compact] .masthead-rule{display:none;}
.site-header[data-compact] .brand-mark{width:34px;height:34px;font-size:15px;box-shadow:3px 3px 0 var(--cyan);}
.site-header[data-compact] .brand-name{font-size:1.2rem;}
.site-header[data-compact] .primary-nav{padding-bottom:8px;}
.site-header[data-compact] .nav-list a{padding:5px 11px;font-size:14px;}

/* ---------- 5. 页脚：档案柜 ---------- */
.site-footer{
  margin-top:72px;
  background-color:var(--ink-deep);
  background-image:
    repeating-linear-gradient(90deg, rgba(36,92,138,.16) 0 1px, transparent 1px 22px),
    repeating-linear-gradient(0deg, rgba(42,157,143,.08) 0 1px, transparent 1px 22px);
  border-top:var(--border-w) solid var(--blue);
  color:var(--paper);
}
.footer-inner{
  width:100%;
  max-width:var(--shell-max);
  margin:0 auto;
  padding:52px var(--gutter) 40px;
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.5fr;
  gap:32px;
}
.footer-brand{align-self:start;}
.footer-mark{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.75rem;
  letter-spacing:.14em;
  line-height:1.2;
  color:var(--paper);
}
.footer-tagline{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--jade-light);
}
.footer-note{
  margin-top:14px;
  max-width:32ch;
  font-size:14px;
  line-height:1.8;
  color:var(--slate);
}
.footer-col-title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--clay);
  padding-bottom:10px;
  margin-bottom:14px;
  border-bottom:2px solid var(--blue-deep);
}
.footer-links{list-style:none;display:grid;gap:9px;}
.footer-links a{
  display:inline-block;
  font-size:15px;
  letter-spacing:.06em;
  color:var(--paper);
  border-bottom:2px solid transparent;
  transition:color 180ms var(--ease),border-color 180ms var(--ease),transform 180ms var(--ease);
}
.footer-links a:hover{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
  transform:translateX(3px);
}
.footer-contact-line{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.95;
  letter-spacing:.02em;
  color:var(--paper);
  word-break:break-word;
}
.footer-contact-line--muted{color:var(--slate);font-size:12px;letter-spacing:.1em;}
.footer-bottom{
  width:100%;
  max-width:var(--shell-max);
  margin:0 auto;
  padding:18px var(--gutter) 30px;
  border-top:2px solid var(--blue-deep);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--slate);
}
.footer-record{
  color:var(--ink);
  background:var(--jade-light);
  padding:2px 9px;
  letter-spacing:.06em;
}
.footer-worktime{color:var(--slate);}

/* ---------- 6. 通用内容组件 ---------- */
.container{
  width:100%;
  max-width:var(--shell-max);
  margin:0 auto;
  padding:0 var(--gutter);
}
.prose{max-width:var(--prose-max);font-size:17px;line-height:1.75;}
.prose p + p{margin-top:1.2em;}
.prose a{color:var(--jade-light);border-bottom:2px solid var(--jade);}
.prose a:hover{color:var(--cyan);border-bottom-color:var(--cyan);}

.panel{
  position:relative;
  background:var(--paper);
  color:var(--black);
  border:var(--border-w) solid var(--ink-deep);
  box-shadow:var(--hard-shadow);
  padding:26px;
  border-radius:2px;
}
.panel--paper{background:var(--paper);color:var(--black);}
.panel--blue{background:var(--blue);color:var(--paper);border-color:var(--ink-deep);}
.panel--dark{background:var(--ink);color:var(--paper);border-color:var(--blue-deep);}
.panel--blue a,.panel--dark a{color:var(--cyan);}
.panel > :first-child{margin-top:0;}
.panel > :last-child{margin-bottom:0;}

.eyebrow{
  display:block;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--clay);
  margin-bottom:10px;
}
.panel--blue .eyebrow,.panel--dark .eyebrow{color:var(--jade-light);}

.annot{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.3em;
  color:var(--slate);
  writing-mode:vertical-rl;
  text-orientation:mixed;
  line-height:1;
}

.mono{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.02em;
}

.tag{
  display:inline-block;
  padding:2px 9px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.7;
  border:2px solid currentColor;
  color:var(--jade);
  background:transparent;
  white-space:nowrap;
}
.tag--jade{color:var(--jade);}
.tag--clay{color:var(--clay);}
.panel--dark .tag--jade,.panel--blue .tag--jade{color:var(--jade-light);}

/* 图像容器：页面阶段在 .figure__frame 内放 <img> 即可 */
.figure{margin:0;display:block;}
.figure__frame{
  position:relative;
  width:100%;
  aspect-ratio:16 / 10;
  overflow:hidden;
  background-color:var(--blue-deep);
  border:var(--border-w) solid var(--ink-deep);
  box-shadow:var(--hard-shadow);
  background-image:
    repeating-linear-gradient(45deg, rgba(127,209,196,.16) 0 2px, transparent 2px 14px),
    repeating-linear-gradient(-45deg, rgba(36,92,138,.42) 0 2px, transparent 2px 22px);
}
.figure--wide .figure__frame{aspect-ratio:21 / 9;}
.figure--square .figure__frame{aspect-ratio:1 / 1;}
.figure__frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.figure__caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.7;
  color:var(--slate);
}
.panel .figure__caption{color:var(--blue-deep);}

.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}

/* 主题筛选 */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
}
.filter-btn{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.08em;
  padding:6px 13px;
  color:var(--paper);
  background:transparent;
  border:2px solid var(--jade);
  transition:background-color 180ms var(--ease),color 180ms var(--ease),
             border-color 180ms var(--ease),box-shadow 180ms var(--ease);
}
.filter-btn:hover{border-color:var(--cyan);color:var(--cyan);}
.filter-btn[aria-pressed="true"]{
  background:var(--jade);
  color:var(--ink);
  border-color:var(--ink);
  box-shadow:3px 3px 0 var(--cyan);
}
.panel .filter-btn{color:var(--blue-deep);border-color:var(--blue);}
.panel .filter-btn:hover{color:var(--ink);border-color:var(--ink);}
.panel .filter-btn[aria-pressed="true"]{background:var(--blue-deep);color:var(--paper);border-color:var(--ink);}

/* 入场显现 */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease);
}
html.js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}

/* ---------- 7. 响应式 ---------- */
@media (max-width:1080px){
  .footer-inner{grid-template-columns:1fr 1fr;gap:34px 28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-col--contact{grid-column:1 / -1;}
}

@media (max-width:900px){
  :root{--gutter:20px;}
  #main-content,:target{scroll-margin-top:130px;}

  .masthead{padding:12px var(--gutter) 0;}
  .masthead-top{
    grid-template-columns:1fr;
    justify-items:start;
    padding-bottom:4px;
    padding-right:104px;
  }
  .masthead-meta{display:none;}
  .masthead-brand{gap:10px;}
  .brand-mark{width:36px;height:36px;font-size:16px;}
  .brand-name{font-size:1.15rem;letter-spacing:.12em;}
  .masthead-rule{padding:6px 0;}

  .nav-toggle{display:inline-flex;top:12px;}

  .primary-nav{
    display:none;
    grid-template-columns:1fr;
    gap:0;
    padding:0 0 18px;
  }
  .primary-nav[data-open]{
    display:grid;
    animation:nav-drop 200ms var(--ease) both;
  }
  @keyframes nav-drop{
    from{opacity:0;transform:translateY(-8px);}
    to{opacity:1;transform:none;}
  }
  .nav-list{
    grid-column:1;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    width:100%;
  }
  .nav-list li{width:100%;}
  .nav-list a{
    display:block;
    width:100%;
    padding:13px 6px;
    font-size:16px;
    border:0;
    border-bottom:2px solid var(--blue-deep);
  }
  .nav-list a:hover,
  .nav-list a[aria-current="page"]{
    transform:none;
    box-shadow:none;
    border-left:6px solid var(--clay);
    padding-left:14px;
  }
  .nav-cta{
    grid-column:1;
    justify-self:start;
    margin-top:16px;
  }

  .grid--2,.grid--3{grid-template-columns:1fr;}
}

@media (max-width:640px){
  body{font-size:16px;}
  .footer-inner{grid-template-columns:1fr;padding:40px var(--gutter) 30px;}
  .footer-mark{font-size:1.45rem;}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px;font-size:11px;}
  .panel{padding:20px;box-shadow:6px 6px 0 var(--ink-deep);}
  .figure__frame{box-shadow:6px 6px 0 var(--ink-deep);}
  .masthead-top{padding-right:96px;}
}

/* ---------- 8. 减少动效 ---------- */
@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;
  }
  html.js [data-reveal]{opacity:1;transform:none;}
  .header-progress::after{transition:none;}
}