:root{
  --red:#A32B27;
  --red-deep:#7A1F1C;
  --gold:#C79A3F;
  --gold-light:#E8CE8E;
  --slate:#5A6A6E;
  --moon:#F3F5F4;
  --rice:#FAF5EC;
  --stone:#8C918E;
  --moss:#4E6A52;
  --clay:#B9704F;
  --ink:#1E1A17;
  --line:rgba(90,106,110,.22);
  --line-soft:rgba(90,106,110,.12);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,"SFMono-Regular",Consolas,monospace;
  --mast-h:60px;
  --rail-w:88px;
  --content:1200px;
  --gutter:clamp(20px,4vw,64px);
  --radius-lg:28px;
  --radius-md:18px;
}

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

html{
  background:var(--rice);
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  padding-top:var(--mast-h);
  background:transparent;
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(90,106,110,.09) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(90,106,110,.09) 1px,transparent 1px),
    radial-gradient(120% 58% at 78% -6%,rgba(199,154,63,.18),rgba(199,154,63,0) 62%);
  background-size:88px 88px,88px 88px,100% 100%;
  background-repeat:repeat,repeat,no-repeat;
  background-position:0 0,0 0,0 0;
}

img,svg,video,picture{max-width:100%;display:block;height:auto}
h1,h2,h3,h4,p,figure,blockquote,ol,ul,dl{margin:0}
ol,ul{padding:0;list-style:none}
a{color:var(--red);text-decoration:none}
a:hover{color:var(--red-deep)}
button{font:inherit;color:inherit;background:none;border:0}
table{border-collapse:collapse;width:100%}
::selection{background:var(--gold-light);color:var(--ink)}

:focus-visible{
  outline:2px solid var(--gold);
  outline-offset:3px;
  border-radius:6px;
}

#main-content{scroll-margin-top:calc(var(--mast-h) + 16px)}

/* ---------- 文字层级 ---------- */
.display,.h1{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(3.5rem,9vw,8rem);
  line-height:.95;
  letter-spacing:-.02em;
}
.h2{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.75rem,4vw,3rem);
  line-height:1.15;
  letter-spacing:-.01em;
}
.h3{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(20px,2.2vw,26px);
  line-height:1.32;
}
.lede{
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.75;
  color:var(--slate);
  max-width:64ch;
}
.meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--slate);
}
.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:.06em;
}

/* ---------- 布局 ---------- */
.wrap{
  width:min(var(--content),100% - 2 * var(--gutter));
  margin-inline:auto;
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.2vw,28px);
}
.span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:1 / -1}

.section{
  position:relative;
  padding:clamp(52px,7vw,104px) 0;
}
.section--rice{background:var(--rice)}
.section--moon{background:var(--moon)}
.section--ink{background:var(--ink);color:var(--moon)}
.section--ink .meta,
.section--ink .plate-path,
.section--ink .lede{color:#A9B2B0}
.section--ink a{color:var(--gold-light)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:clamp(14px,2vw,28px);
  margin-bottom:clamp(22px,3vw,38px);
}
.rule{height:1px;border:0;background:var(--line);margin:0}

/* ---------- 按钮与标签 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:11px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:500;
  letter-spacing:.04em;
  line-height:1.2;
  cursor:pointer;
  text-decoration:none;
  transition:background-color .18s ease-out,color .18s ease-out,border-color .18s ease-out,transform .18s ease-out;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--red);color:var(--rice)}
.btn-primary:hover{background:var(--red-deep);color:var(--rice)}
.btn-gold{background:var(--gold);color:#2A2007}
.btn-gold:hover{background:var(--gold-light);color:#2A2007}
.btn-ghost{background:transparent;border-color:rgba(163,43,39,.38);color:var(--red)}
.btn-ghost:hover{background:var(--red);border-color:var(--red);color:var(--rice)}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:999px;
  background:var(--moon);
  border:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--slate);
}
.chip--gold{background:var(--gold-light);border-color:var(--gold);color:#3A2C08}
.chip--moss{background:rgba(78,106,82,.14);border-color:rgba(78,106,82,.4);color:var(--moss)}

/* ---------- 顶栏 ---------- */
.site-header{position:relative;z-index:60}
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:200;
  transform:translateY(-180%);
  padding:10px 18px;
  border-radius:999px;
  background:var(--ink);
  color:var(--rice);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  transition:transform .2s ease-out;
}
.skip-link:focus{transform:translateY(0);color:var(--rice)}

.masthead{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:60;
  height:var(--mast-h);
  display:flex;
  align-items:center;
  gap:14px;
  padding:0 clamp(14px,3vw,28px);
  background:rgba(250,245,236,.92);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(10px) saturate(120%);
}
.masthead::after{
  content:"";
  position:absolute;
  left:0;
  bottom:-1px;
  width:clamp(64px,12vw,190px);
  height:2px;
  background:linear-gradient(90deg,var(--red),var(--gold));
}
.masthead-tail{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.6vw,18px);
  margin-left:auto;
  min-width:0;
}
.masthead-index{
  display:none;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:var(--slate);
  white-space:nowrap;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  min-width:0;
  color:inherit;
  text-decoration:none;
}
.brand:hover{color:var(--ink)}
.brand-mark{
  flex:0 0 auto;
  width:34px;
  height:34px;
  display:grid;
  place-items:center;
  border-radius:11px;
  background:var(--red);
  color:var(--rice);
  font-family:var(--font-display);
  font-weight:700;
  font-size:18px;
  line-height:1;
  box-shadow:inset 0 0 0 1px rgba(199,154,63,.85);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-line{
  font-family:var(--font-display);
  font-weight:700;
  font-size:15px;
  letter-spacing:.02em;
  line-height:1.3;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.14em;
  color:var(--stone);
  white-space:nowrap;
}

.masthead-cta{display:none}

.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:border-color .18s ease-out,background-color .18s ease-out;
}
.nav-toggle:hover{border-color:var(--gold);background:rgba(232,206,142,.28)}
.nav-toggle-icon{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:18px}
.nav-toggle-icon span{
  display:block;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .24s ease-out,opacity .18s ease-out;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle-text{display:inline}

/* ---------- 侧边轨道 / 抽屉 ---------- */
.rail{
  position:fixed;
  top:0;
  bottom:0;
  left:0;
  z-index:70;
  width:min(82vw,322px);
  display:flex;
  flex-direction:column;
  padding:calc(var(--mast-h) + 18px) 0 28px;
  background:var(--rice);
  border-right:1px solid var(--line);
  transform:translateX(-104%);
  transition:transform .32s ease-out;
  overflow-y:auto;
  overscroll-behavior:contain;
}
.rail[data-open]{transform:translateX(0)}
.rail-list{display:flex;flex-direction:column}
.rail-link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:14px;
  padding:15px clamp(18px,5vw,26px);
  border-bottom:1px dashed var(--line-soft);
  color:var(--ink);
  font-family:var(--font-display);
  font-weight:700;
  font-size:17px;
  line-height:1.4;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.rail-link:hover{background:var(--moon);color:var(--red-deep)}
.rail-num{
  font-family:var(--font-mono);
  font-weight:500;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
}
.rail-label{font-family:var(--font-display);font-weight:700}
.rail-link[aria-current="page"]{
  color:var(--red);
  background:linear-gradient(90deg,rgba(199,154,63,.18),rgba(199,154,63,0) 72%);
}
.rail-link[aria-current="page"]::before{
  content:"";
  position:absolute;
  left:0;
  top:0;
  bottom:0;
  width:3px;
  height:auto;
  background:var(--gold);
}
.rail-cta{margin:22px clamp(18px,5vw,26px) 0;align-self:flex-start}
.rail-sign{
  margin:auto clamp(18px,5vw,26px) 0;
  padding-top:18px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.22em;
  color:var(--stone);
}
.rail-progress{
  position:absolute;
  right:0;
  bottom:0;
  width:2px;
  height:0;
  background:linear-gradient(180deg,var(--gold),var(--red));
}
.rail-scrim{
  position:fixed;
  inset:0;
  z-index:65;
  background:rgba(30,26,23,.44);
  animation:scrim-in .28s ease-out both;
}
@keyframes scrim-in{from{opacity:0}to{opacity:1}}

/* ---------- 说明牌 / 清单 / 筛选 ---------- */
.plate{
  position:relative;
  padding:clamp(22px,3vw,34px);
  border-radius:var(--radius-lg);
  background:var(--moon);
  border:1px solid var(--line-soft);
}
.plate-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:14px;
  margin-bottom:clamp(16px,2vw,24px);
  padding-bottom:12px;
  border-bottom:1px solid var(--line);
}
.plate-num{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
}
.plate-path{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--slate);
}
.plate-path::before{
  content:"";
  width:clamp(18px,4vw,54px);
  height:1px;
  background:var(--line);
}
.plate-title{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(1.75rem,4vw,3rem);
  line-height:1.12;
  letter-spacing:-.01em;
}
.plate-note{margin-top:12px;max-width:62ch;color:var(--slate);font-size:16px}

.index-list{display:grid;gap:clamp(14px,2vw,22px)}
.index-item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:clamp(14px,2.4vw,26px);
  padding:clamp(14px,2.2vw,22px) 0;
  border-top:1px solid var(--line-soft);
}
.index-num{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold);
  padding-top:.35em;
}
.index-body{min-width:0}

.filter-bar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:clamp(18px,3vw,28px);
}
.filter-btn{
  padding:9px 18px;
  border-radius:999px;
  border:1px solid var(--line);
  background:transparent;
  color:var(--slate);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color .18s ease-out,border-color .18s ease-out,color .18s ease-out,transform .18s ease-out;
}
.filter-btn:hover{border-color:var(--gold);color:var(--ink)}
.filter-btn[aria-pressed="true"]{
  background:var(--gold-light);
  border-color:var(--gold);
  color:var(--ink);
  transform:translateY(-1px);
}
[data-tag][hidden]{display:none}

/* ---------- 图片容器（页面阶段放图） ---------- */
.media-frame{
  position:relative;
  width:100%;
  aspect-ratio:4 / 3;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-soft);
  background:linear-gradient(135deg,#EFE9DD,#E3E7E5 55%,#DCE3E0);
}
.media-frame > img,
.media-frame > picture,
.media-frame > picture img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--square{aspect-ratio:1 / 1}
.media-caption{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--stone);
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--stone);
}
.breadcrumb a{color:var(--slate)}
.breadcrumb a:hover{color:var(--red)}
.breadcrumb-sep{color:var(--gold)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(40px,6vw,80px);
  padding:clamp(44px,6vw,84px) 0 clamp(24px,3vw,36px);
  background:var(--ink);
  color:#E6E1D8;
  overflow:hidden;
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--red),var(--gold) 46%,rgba(199,154,63,0) 100%);
}
.footer-inner{
  width:min(var(--content),100% - 2 * var(--gutter));
  margin-inline:auto;
}
.footer-top{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,4vw,48px);
}
.footer-brand{display:flex;flex-direction:column;gap:12px;max-width:42ch}
.footer-mark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--gold);
}
.footer-mark::before{
  content:"";
  width:26px;
  height:1px;
  background:var(--gold);
}
.footer-brand-name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:19px;
  letter-spacing:.02em;
  color:var(--moon);
}
.footer-brand-note{font-size:14px;line-height:1.7;color:#ABA49A}
.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--gold);
}
.footer-list{display:grid;gap:10px}
.footer-list a{
  font-size:15px;
  color:#CFC8BE;
  text-decoration:none;
  transition:color .18s ease-out;
}
.footer-list a:hover{color:var(--gold-light)}

.footer-legacy{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 22px;
  margin-top:clamp(28px,4vw,44px);
  padding:16px 20px;
  border:1px dashed rgba(199,154,63,.45);
  border-radius:var(--radius-md);
  background:rgba(199,154,63,.07);
}
.footer-legacy-label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold-light);
  white-space:nowrap;
}
.footer-legacy-label:hover{color:var(--moon)}
.footer-legacy-note{
  flex:1 1 22ch;
  margin:0;
  max-width:72ch;
  font-size:13.5px;
  line-height:1.65;
  color:#ABA49A;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:16px 28px;
  margin-top:clamp(30px,4vw,48px);
  padding-top:22px;
  border-top:1px solid rgba(243,245,244,.14);
}
.footer-meta{display:grid;gap:6px}
.footer-legal{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:#9AA3A2;
}
.footer-copy{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:#9AA3A2;
}
.footer-contact{display:grid;gap:6px;min-width:0}
.footer-contact-line{
  font-family:var(--font-mono);
  font-size:12px;
  line-height:1.7;
  letter-spacing:.03em;
  color:#A9A29A;
  overflow-wrap:anywhere;
}
.to-top{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:10px 18px;
  border:1px solid rgba(199,154,63,.5);
  border-radius:999px;
  background:transparent;
  color:var(--gold-light);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color .18s ease-out,color .18s ease-out;
}
.to-top:hover{background:rgba(199,154,63,.18);color:var(--moon)}

/* ---------- 显现 ---------- */
[data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .32s ease-out,transform .32s ease-out;
}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 平板 ---------- */
@media (min-width:768px){
  .span-3{grid-column:span 6}
  .span-4{grid-column:span 6}
  .span-5{grid-column:span 6}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 12}
  .span-8{grid-column:span 12}
  .masthead-cta{display:inline-flex}
  .footer-top{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 桌面：侧边轨道 ---------- */
@media (min-width:1024px){
  :root{--mast-h:64px}
  body{padding-top:var(--mast-h);padding-left:var(--rail-w)}
  body[data-nav-open]{overflow:auto}

  .rail{
    top:var(--mast-h);
    width:var(--rail-w);
    padding:20px 0 16px;
    align-items:center;
    transform:none;
    transition:none;
    overflow:hidden;
    border-right:1px solid var(--line);
    background:linear-gradient(180deg,var(--rice) 0%,#F0EBE1 56%,var(--moon) 100%);
  }
  .rail-list{
    width:100%;
    margin:auto 0;
    align-items:center;
    justify-content:center;
    gap:2px;
  }
  .rail-link{
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:7px;
    width:100%;
    padding:10px 0;
    border-bottom:0;
    background:transparent;
  }
  .rail-link:hover{background:transparent}
  .rail-link:hover .rail-label{color:var(--red)}
  .rail-num{
    font-size:10px;
    letter-spacing:.14em;
    color:var(--stone);
  }
  .rail-label{
    writing-mode:vertical-rl;
    text-orientation:upright;
    font-size:12px;
    letter-spacing:.16em;
    color:var(--slate);
    line-height:1;
  }
  .rail-link[aria-current="page"]{background:transparent;color:var(--red)}
  .rail-link[aria-current="page"]::before{
    left:6px;
    top:50%;
    bottom:auto;
    width:14px;
    height:2px;
    transform:translateY(-50%);
  }
  .rail-link[aria-current="page"] .rail-label{color:var(--red)}
  .rail-link[aria-current="page"] .rail-num{color:var(--gold)}
  .rail-cta{display:none}
  .rail-sign{
    writing-mode:vertical-rl;
    text-orientation:mixed;
    margin:14px 0 0;
    padding-top:0;
    font-size:10px;
    letter-spacing:.28em;
  }
  .rail-scrim{display:none}
  .nav-toggle{display:none}
  .masthead-index{display:block}
  .footer-top{grid-template-columns:1.6fr repeat(3,minmax(0,1fr))}
  .span-3{grid-column:span 3}
  .span-4{grid-column:span 4}
  .span-5{grid-column:span 5}
  .span-6{grid-column:span 6}
  .span-7{grid-column:span 7}
  .span-8{grid-column:span 8}
  .span-12{grid-column:span 12}
}

@media (max-width:1023px){
  body[data-nav-open]{overflow:hidden}
}

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