:root{
  --zhu:#B62E1C;
  --zhu-deep:#8C1F12;
  --jin:#C89A3C;
  --jin-dark:#8A6420;
  --indigo:#1F3A5F;
  --ink:#1A1512;
  --cream:#F7F0E4;
  --sand:#DDD1BC;
  --jade:#2E7D6E;
  --tile:#D9642F;
  --paper:#FFFBF3;

  --line:rgba(26,21,18,.14);
  --line-soft:rgba(221,209,188,.7);
  --cream-ink:rgba(247,240,228,.8);

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"SF Mono",SFMono-Regular,ui-monospace,"Cascadia Mono","Roboto Mono",Consolas,monospace;

  --gutter:clamp(16px,4vw,56px);
  --shell-max:1240px;
  --gap:clamp(16px,2.2vw,32px);
  --radius:2px;
}

*,*::before,*::after{box-sizing:border-box}

html{
  -webkit-text-size-adjust:100%;
  scroll-padding-top:96px;
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

body{
  margin:0;
  background-color:var(--cream);
  background-image:
    repeating-linear-gradient(to right,rgba(221,209,188,.55) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(to bottom,rgba(221,209,188,.55) 0 1px,transparent 1px 64px),
    repeating-linear-gradient(to right,rgba(200,154,60,.10) 0 1px,transparent 1px 512px),
    repeating-linear-gradient(to bottom,rgba(200,154,60,.10) 0 1px,transparent 1px 512px);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img,svg,video{display:block;max-width:100%;height:auto}
a{color:inherit}
button{font:inherit;color:inherit}
h1,h2,h3,h4,p,figure,blockquote{margin:0}

:focus-visible{
  outline:2px solid var(--jin-dark);
  outline-offset:3px;
  border-radius:var(--radius);
}
.nav-bar :focus-visible,
.site-footer :focus-visible{
  outline-color:var(--jin);
}

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

.visually-hidden{
  position:absolute;
  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;
}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

.section{padding-block:clamp(36px,6vw,80px)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 20px;
  margin-bottom:clamp(18px,2.4vw,30px);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.24em;
  color:var(--jin-dark);
  font-variant-numeric:tabular-nums;
}
.section-title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(24px,3.4vw,38px);
  line-height:1.32;
  letter-spacing:.03em;
}
.text-gold{color:var(--jin-dark);font-weight:600}

.prose{max-width:68ch}
.prose p+p{margin-top:1.35em}
.prose h2{
  font-family:var(--font-display);
  font-size:clamp(22px,2.6vw,30px);
  font-weight:600;
  line-height:1.42;
  letter-spacing:.02em;
  margin-block:1.8em .7em;
}
.prose h3{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:600;
  margin-block:1.6em .5em;
}
.prose ul,.prose ol{padding-left:1.4em;margin-block:1em}
.prose li+li{margin-top:.4em}
.prose ul{list-style:none}
.prose ul li{position:relative}
.prose ul li::before{
  content:"";
  position:absolute;
  left:-1.05em;
  top:.82em;
  width:6px;height:6px;
  background:var(--jin);
  transform:rotate(45deg);
}
.prose a{
  color:var(--jin-dark);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-thickness:1px;
}
.prose strong{font-weight:600;color:var(--jin-dark)}

.path-rule{
  height:1px;
  border:0;
  margin-block:clamp(24px,4vw,48px);
  background:linear-gradient(90deg,var(--jin),rgba(200,154,60,.08));
}

/* ===== 跳至主内容 ===== */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:999;
  transform:translateY(-180%);
  padding:.65em 1.15em;
  background:var(--ink);
  color:var(--paper);
  font-size:14px;
  letter-spacing:.1em;
  text-decoration:none;
  border-radius:var(--radius);
  transition:transform .18s ease;
}
.skip-link:focus,
.skip-link:focus-visible{transform:none}

/* ===== 头部 ===== */
.site-header{position:relative;z-index:30}

.header-strip{
  background:var(--cream);
  border-bottom:1px solid var(--sand);
}
.header-strip-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px 28px;
  padding-block:13px 12px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:14px;
  text-decoration:none;
  color:var(--ink);
}
.brand-mark{
  flex:none;
  display:grid;
  place-items:center;
  width:48px;height:48px;
  background:var(--zhu);
  color:var(--paper);
  font-family:var(--font-display);
  font-size:23px;
  font-weight:900;
  line-height:1;
  border-radius:var(--radius);
  box-shadow:inset 0 0 0 1px rgba(247,240,228,.45),0 2px 0 var(--zhu-deep);
  transform:rotate(-3deg);
}
.brand-text{display:flex;flex-direction:column;gap:2px;line-height:1.22}
.brand-name{
  font-family:var(--font-display);
  font-size:clamp(19px,2vw,23px);
  font-weight:900;
  letter-spacing:.14em;
}
.brand-tagline{
  font-size:12px;
  letter-spacing:.18em;
  color:var(--jin-dark);
}

.header-contact{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:flex-end;
  gap:6px 12px;
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.5;
}
.header-contact-label{
  padding:.28em .7em;
  border:1px solid var(--sand);
  border-radius:999px;
  color:var(--jin-dark);
  font-family:var(--font-body);
  font-size:11.5px;
  letter-spacing:.16em;
}
.header-contact-value{letter-spacing:.02em;color:var(--ink)}
.header-contact-note{color:var(--jade);font-size:11.5px;letter-spacing:.08em}

.nav-bar{
  position:relative;
  background:var(--indigo);
  color:var(--cream);
}
.nav-bar-inner{
  display:flex;
  align-items:center;
  gap:18px;
  min-height:58px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:8px 14px;
  background:transparent;
  border:1px solid rgba(247,240,228,.34);
  border-radius:var(--radius);
  color:var(--cream);
  font-size:14px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color .18s ease,background .18s ease;
}
.nav-toggle:hover{border-color:var(--jin);background:rgba(247,240,228,.08)}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:18px;height:2px;
  background:currentColor;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;height:2px;
  background:currentColor;
}
.nav-toggle-bars::before{top:-6px}
.nav-toggle-bars::after{top:6px}
.nav-toggle-text{line-height:1}

.site-nav{flex:1 1 auto;min-width:0}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  margin:0;
  padding:0;
  list-style:none;
}
.nav-item+.nav-item{border-left:1px solid rgba(247,240,228,.14)}
.nav-link{
  position:relative;
  display:inline-block;
  padding:15px 18px 13px;
  color:var(--cream-ink);
  font-size:15px;
  letter-spacing:.1em;
  text-decoration:none;
  transition:color .18s ease;
}
.nav-link::after{
  content:"";
  position:absolute;
  left:18px;right:18px;
  bottom:7px;
  height:2px;
  background:var(--zhu);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s ease;
}
.nav-link:hover,
.nav-link:focus-visible{color:var(--paper)}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--paper);font-weight:600}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-drawer-foot{display:none}

.nav-coord{
  flex:none;
  padding-left:18px;
  border-left:1px solid rgba(247,240,228,.16);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--jin);
  font-variant-numeric:tabular-nums;
}

.nav-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:rgba(247,240,228,.12);
}
.nav-progress-bar{
  display:block;
  height:100%;
  width:0;
  background:linear-gradient(90deg,var(--jin),var(--tile));
}

/* ===== 页脚 ===== */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background:var(--indigo);
  color:var(--cream-ink);
  position:relative;
}
.footer-top{
  display:grid;
  grid-template-columns:1.35fr .85fr .85fr 1.25fr;
  gap:clamp(22px,3vw,44px);
  padding-block:clamp(40px,5.5vw,72px) clamp(28px,4vw,48px);
}
.footer-brand-link{
  display:inline-block;
  font-family:var(--font-display);
  font-size:clamp(22px,2.4vw,28px);
  font-weight:900;
  letter-spacing:.16em;
  color:var(--paper);
  text-decoration:none;
}
.footer-brand-note{
  margin-top:14px;
  max-width:26em;
  font-size:14px;
  line-height:1.8;
  color:rgba(247,240,228,.72);
}
.footer-seal{
  display:inline-block;
  margin-top:18px;
  padding:.35em .85em;
  border:1px solid rgba(200,154,60,.55);
  border-radius:var(--radius);
  color:var(--jin);
  font-size:12px;
  letter-spacing:.3em;
}
.footer-heading{
  margin:0 0 14px;
  font-family:var(--font-display);
  font-size:15px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--paper);
}
.footer-list{
  display:flex;
  flex-direction:column;
  gap:9px;
  margin:0;
  padding:0;
  list-style:none;
  font-size:14.5px;
}
.footer-list a{
  position:relative;
  display:inline-block;
  color:rgba(247,240,228,.78);
  text-decoration:none;
  transition:color .18s ease;
}
.footer-list a::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:1px;
  background:var(--jin);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .18s ease;
}
.footer-list a:hover,
.footer-list a:focus-visible{color:var(--jin)}
.footer-list a:hover::after,
.footer-list a:focus-visible::after{transform:scaleX(1)}

.footer-list-plain li{
  display:flex;
  align-items:baseline;
  gap:.75em;
  font-size:13.5px;
  line-height:1.7;
  color:rgba(247,240,228,.78);
}
.footer-key{
  flex:none;
  min-width:2.7em;
  color:var(--jin);
  font-size:12px;
  letter-spacing:.16em;
}
.footer-value{overflow-wrap:anywhere}

.footer-rule{
  height:1px;
  margin-inline:var(--gutter);
  background:repeating-linear-gradient(to right,rgba(247,240,228,.3) 0 6px,transparent 6px 13px);
}
.footer-bottom-bar{background:var(--zhu-deep)}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 28px;
  padding-block:16px 18px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.1em;
  color:rgba(247,240,228,.76);
  font-variant-numeric:tabular-nums;
}
.footer-motto{color:var(--jin);letter-spacing:.2em}

/* ===== 通用按钮 ===== */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  padding:.72em 1.35em;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:var(--font-body);
  font-size:15px;
  font-weight:500;
  letter-spacing:.1em;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn-primary{background:var(--zhu);color:var(--paper)}
.btn-primary:hover{background:var(--zhu-deep)}
.btn-gold{background:var(--jin);color:var(--ink)}
.btn-gold:hover{background:var(--tile)}
.btn-ghost{background:transparent;color:var(--ink);border-color:var(--sand)}
.btn-ghost:hover{border-color:var(--zhu);color:var(--zhu)}
.btn-sm{padding:.45em .95em;font-size:13.5px;letter-spacing:.08em}

/* ===== 面包屑 ===== */
.breadcrumb{
  margin-block:clamp(18px,3vw,30px) 0;
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.1em;
  color:var(--jin-dark);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.55em;
  margin:0;
  padding:0;
  list-style:none;
}
.breadcrumb li+li::before{content:"／";margin-right:.55em;color:var(--sand)}
.breadcrumb a{
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:border-color .18s ease;
}
.breadcrumb a:hover{border-color:var(--jin-dark)}
.breadcrumb [aria-current="page"]{color:var(--ink)}

/* ===== 小构件 ===== */
.coord-mark{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  color:var(--jin-dark);
  font-variant-numeric:tabular-nums;
}
.coord-mark::before{
  content:"";
  width:8px;height:8px;
  background:var(--jin);
  transform:rotate(45deg);
}

.chip{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  padding:.25em .7em;
  border-radius:999px;
  background:var(--sand);
  color:var(--ink);
  font-size:12px;
  letter-spacing:.12em;
}
.chip--jade{background:rgba(46,125,110,.14);color:var(--jade)}
.chip--tile{background:rgba(217,100,47,.16);color:var(--zhu-deep)}
.chip--gold{background:rgba(200,154,60,.2);color:var(--jin-dark)}

.card{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  background:var(--paper);
  border:1px solid var(--sand);
  border-radius:var(--radius);
  transition:border-color .18s ease,transform .18s ease,box-shadow .18s ease;
}
.card:hover{
  border-color:var(--jin);
  transform:translateY(-2px);
  box-shadow:0 10px 26px -20px rgba(26,21,18,.75);
}
.card-title{
  margin-bottom:.4em;
  font-family:var(--font-display);
  font-size:18px;
  font-weight:600;
  letter-spacing:.04em;
}
.card-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--jin-dark);
  font-variant-numeric:tabular-nums;
}

/* ===== 图片容器基础规则 ===== */
.media{
  position:relative;
  display:block;
  margin:0;
  overflow:hidden;
  background:var(--sand);
  border-radius:var(--radius);
}
.media img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media--street{aspect-ratio:16/9}
.media--wide{aspect-ratio:21/9}
.media--square{aspect-ratio:1/1}
.media--portrait{aspect-ratio:3/4}
.media--grid{
  aspect-ratio:4/3;
  background-color:var(--cream);
  background-image:
    repeating-linear-gradient(to right,rgba(31,58,95,.18) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(to bottom,rgba(31,58,95,.18) 0 1px,transparent 1px 26px),
    repeating-linear-gradient(to right,rgba(200,154,60,.35) 0 1px,transparent 1px 104px);
}
.media-caption{
  margin-top:.7em;
  font-size:12.5px;
  line-height:1.65;
  letter-spacing:.12em;
  color:var(--jin-dark);
}

/* ===== 筛选 ===== */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:20px;
}
.filter-btn{
  padding:.42em 1em;
  background:var(--paper);
  border:1px solid var(--sand);
  border-radius:999px;
  color:var(--ink);
  font-size:13.5px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.filter-btn:hover{border-color:var(--tile)}
.filter-btn.is-active,
.filter-btn[aria-pressed="true"]{
  background:var(--tile);
  border-color:var(--tile);
  color:var(--ink);
  font-weight:600;
}
[data-tags][hidden]{display:none !important}

/* ===== 进入视口显现 ===== */
html.has-js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s ease,transform .5s ease;
}
html.has-js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ===== 平板 ===== */
@media (max-width:1000px){
  .footer-top{grid-template-columns:1fr 1fr;gap:32px 28px}
}

/* ===== 移动导航 ===== */
@media (max-width:900px){
  .nav-bar-inner{flex-wrap:wrap;gap:0;padding-block:10px}
  .nav-toggle{display:inline-flex;order:1;margin-right:auto}
  .nav-coord{
    order:2;
    padding-left:0;
    border-left:0;
    font-size:11px;
    letter-spacing:.12em;
  }
  .site-nav{
    order:3;
    flex:1 1 100%;
    display:none;
    width:100%;
    margin-top:12px;
    border-top:1px solid rgba(247,240,228,.18);
  }
  .site-nav[data-open]{display:block;animation:navReveal .22s ease-out both}
  .nav-list{flex-direction:column}
  .nav-item+.nav-item{border-left:0;border-top:1px dashed rgba(247,240,228,.16)}
  .nav-link{display:block;width:100%;padding:14px 4px;font-size:16px}
  .nav-link::after{left:4px;right:auto;width:26px;bottom:11px}
  .nav-drawer-foot{display:block;padding:16px 4px 6px}
  .nav-drawer-link{
    display:inline-flex;
    align-items:center;
    padding:.6em 1.15em;
    background:var(--zhu);
    border-radius:var(--radius);
    color:var(--paper);
    font-size:14.5px;
    letter-spacing:.1em;
    text-decoration:none;
  }
  .nav-drawer-link:hover{background:var(--zhu-deep)}

  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-4,.col-5,.col-7,.col-8,.col-12{grid-column:span 6}
}

@keyframes navReveal{
  from{opacity:0;transform:translateY(-6px)}
  to{opacity:1;transform:none}
}

/* ===== 手机 ===== */
@media (max-width:720px){
  body{font-size:16px;line-height:1.9}
  .header-strip-inner{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
    padding-block:14px 12px;
  }
  .header-contact{justify-content:flex-start;gap:6px 10px;font-size:12px}
  .brand-mark{width:42px;height:42px;font-size:20px}
}

@media (max-width:600px){
  .footer-top{grid-template-columns:1fr;gap:28px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:6px}
  .footer-bottom-bar .footer-bottom{padding-block:16px 18px}
  .nav-coord{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;
  }
  html.has-js [data-reveal]{opacity:1;transform:none}
  .card:hover{transform:none}
}