*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-padding-top:150px;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none}
a{color:inherit}
[hidden]{display:none !important}

:root{
  --ink:#1B1A17;
  --ink-soft:#6B675C;
  --green:#0F3B33;
  --green-2:#17544A;
  --moss:#2E6B5E;
  --copper:#B4863B;
  --copper-light:#D9B876;
  --cream:#F6F1E4;
  --paper:#FDFBF6;
  --cinnabar:#BF3B2B;
  --line:rgba(180,134,59,.34);
  --line-soft:rgba(15,59,51,.13);
  --shadow-card:0 1px 0 rgba(15,59,51,.06),0 20px 44px -34px rgba(15,59,51,.55);
  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;
  --w:1180px;
  --gutter:clamp(18px,4vw,44px);
}

html,body{height:100%}
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--ink);
  background-color:var(--cream);
  background-image:
    radial-gradient(circle at 10% -8%,rgba(46,107,94,.10),transparent 45%),
    radial-gradient(circle at 97% 3%,rgba(180,134,59,.11),transparent 40%);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.26;
  letter-spacing:-.01em;
  color:var(--green);
}

:focus-visible{outline:2px solid var(--green-2);outline-offset:3px}
.site-header :focus-visible,.site-footer :focus-visible{outline-color:var(--copper-light)}

/* ---------- 通用排版工具 ---------- */
.display-title{font-size:clamp(30px,4.8vw,44px);line-height:1.18}
.section-title{font-size:clamp(23px,3vw,32px);line-height:1.3}
.sub-title{font-size:clamp(19px,2.2vw,24px);line-height:1.42}
.eyebrow{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.2em;color:var(--copper)}
.lede{font-size:clamp(17px,1.9vw,19px);line-height:1.78;color:var(--ink-soft);max-width:38em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.rule{border:0;height:1px;background:var(--line);margin-block:clamp(24px,4vw,40px)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

.prose{max-width:38em}
.prose p{margin-bottom:1.1em;color:var(--ink-soft)}
.prose p:last-child{margin-bottom:0}
.prose strong{color:var(--ink);font-weight:700}
.prose ul{margin-bottom:1.1em}
.prose ul li{position:relative;padding-left:22px;margin-bottom:.55em;color:var(--ink-soft)}
.prose ul li::before{content:"—";position:absolute;left:0;top:0;color:var(--copper);font-family:var(--font-mono)}

/* ---------- 容器与网格 ---------- */
.container{width:100%;max-width:var(--w);margin-inline:auto;padding-inline:var(--gutter)}
.container-narrow{max-width:820px}
.site-main{display:block;padding-bottom:clamp(24px,4vw,48px)}
.section{position:relative;padding-block:clamp(40px,5.6vw,72px)}
.section + .section{border-top:1px solid var(--line)}
.section-alt{background:rgba(253,251,246,.56)}

.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-asym{grid-template-columns:minmax(0,1fr) minmax(0,3fr)}

/* ---------- 按钮与链接 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 22px;border-radius:2px;
  border:1px solid var(--green);background:var(--green);color:var(--paper);
  font-family:var(--font-body);font-size:15px;font-weight:600;letter-spacing:.06em;
  text-decoration:none;cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease;
}
.btn::after{content:"\2192";font-family:var(--font-mono);color:var(--copper-light);transition:transform .18s ease}
.btn:hover{background:var(--green-2);border-color:var(--green-2)}
.btn:hover::after{transform:translateX(3px)}
.btn-ghost{background:transparent;color:var(--green);border-color:var(--line)}
.btn-ghost:hover{background:rgba(15,59,51,.06);border-color:var(--copper);color:var(--green-2)}
.btn-ghost::after{color:var(--copper)}
.btn-quiet{
  display:inline-block;padding:2px 0;background:none;border:0;border-bottom:1px solid var(--copper);
  color:var(--green);font-size:15px;font-weight:600;letter-spacing:.04em;text-decoration:none;cursor:pointer;
  transition:color .16s ease,border-color .16s ease;
}
.btn-quiet:hover{color:var(--copper);border-bottom-color:var(--green-2)}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:16px;border-bottom:1px solid var(--line-soft)}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-soft)}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px;letter-spacing:.04em}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--copper);font-family:var(--font-mono)}
.breadcrumb-link{color:var(--ink-soft);text-decoration:none;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.breadcrumb-link:hover{color:var(--green);border-bottom-color:var(--copper)}
.breadcrumb-item[aria-current="page"]{color:var(--green);font-weight:600}

/* ---------- 卡片层 ---------- */
.panel{
  background:var(--paper);
  border:1px solid var(--line-soft);
  border-radius:3px;
  padding:clamp(18px,2.4vw,28px);
  box-shadow:var(--shadow-card);
}
.panel--glass{
  background:rgba(253,251,246,.62);
  -webkit-backdrop-filter:blur(8px) saturate(120%);
  backdrop-filter:blur(8px) saturate(120%);
  border:1px solid rgba(217,184,118,.52);
  box-shadow:none;
}
.panel--ink{background:var(--green);border-color:transparent;color:rgba(246,241,228,.8)}
.panel--ink h2,.panel--ink h3,.panel--ink .sub-title{color:var(--paper)}
.panel--ink .lede{color:rgba(246,241,228,.72)}

/* ---------- 徽章与标签 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;font-weight:700;letter-spacing:.12em;
  color:var(--copper);background:rgba(217,184,118,.12);
  border:1px solid rgba(180,134,59,.5);border-radius:2px;padding:3px 8px;
}
.badge--red{color:var(--cinnabar);background:rgba(191,59,43,.08);border-color:rgba(191,59,43,.48)}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  display:inline-flex;align-items:center;
  font-size:12.5px;line-height:1.6;padding:3px 10px;border-radius:999px;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.62);color:var(--ink-soft);
  text-decoration:none;transition:border-color .16s ease,color .16s ease;
}
.tag:hover{border-color:var(--copper);color:var(--green)}
.tag--solid{background:var(--green);color:var(--paper);border-color:var(--green)}

/* ---------- 编号目录 ---------- */
.index-list{display:flex;flex-direction:column}
.index-item{
  display:grid;grid-template-columns:auto minmax(0,1fr);gap:14px;align-items:start;
  padding:14px 0;border-bottom:1px solid var(--line-soft);
}
.index-item:first-child{border-top:1px solid var(--line-soft)}
.index-num{font-family:var(--font-mono);font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--copper);padding-top:5px}
.index-link{color:var(--ink);text-decoration:none;font-weight:600;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.index-link:hover{color:var(--green);border-bottom-color:var(--copper)}

/* ---------- 图片容器（页面阶段放图） ---------- */
.media-frame{
  position:relative;overflow:hidden;border-radius:3px;
  border:1px solid var(--line-soft);
  background-color:#E8E1D1;
  background-image:
    repeating-linear-gradient(135deg,rgba(15,59,51,.06) 0 1px,transparent 1px 10px),
    linear-gradient(160deg,rgba(46,107,94,.18),rgba(180,134,59,.16));
}
.media-frame img{width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-caption{margin-top:10px;font-family:var(--font-mono);font-size:12.5px;line-height:1.7;color:var(--ink-soft)}

/* ---------- 主题筛选 ---------- */
.filter-bar{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:12px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);
}
.filter-btn{
  appearance:none;cursor:pointer;
  padding:7px 15px;border-radius:999px;
  font-family:var(--font-body);font-size:13.5px;letter-spacing:.04em;
  color:var(--green);background:rgba(253,251,246,.72);
  border:1px solid rgba(15,59,51,.2);
  transition:background .16s ease,color .16s ease,border-color .16s ease;
}
.filter-btn:hover{border-color:var(--copper);color:var(--green-2)}
.filter-btn[aria-pressed="true"]{background:var(--green);color:var(--paper);border-color:var(--green)}
.filter-count{margin-left:auto;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--ink-soft)}

/* ---------- 手风琴 ---------- */
.accordion{border-top:1px solid var(--line)}
.accordion-item{border-bottom:1px solid var(--line)}
.accordion-head{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}
.accordion-trigger{
  display:flex;width:100%;align-items:baseline;justify-content:space-between;gap:18px;
  padding:18px 0;border:0;background:none;cursor:pointer;text-align:left;
  font-family:var(--font-display);font-size:17px;font-weight:700;color:var(--green);
  transition:color .16s ease;
}
.accordion-trigger:hover{color:var(--copper)}
.accordion-trigger::after{content:"+";font-family:var(--font-mono);font-size:18px;color:var(--copper);line-height:1}
.accordion-trigger[aria-expanded="true"]::after{content:"\2212"}
.accordion-panel{padding:0 0 20px;max-width:38em;color:var(--ink-soft);font-size:16px}

/* ---------- 入场显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity .22s ease var(--reveal-delay,0ms),transform .22s ease var(--reveal-delay,0ms);
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ================= 页头 ================= */
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:120;
  padding:10px 16px;border-radius:2px;
  background:var(--paper);color:var(--green);border:1px solid var(--copper);
  font-size:14px;font-weight:600;letter-spacing:.06em;text-decoration:none;
  transition:top .18s ease;
}
.skip-link:focus{top:10px}

.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--green);
  color:var(--cream);
  box-shadow:0 1px 0 rgba(217,184,118,.28),0 22px 34px -34px rgba(15,59,51,.95);
}
.header-progress{position:absolute;left:0;right:0;bottom:0;height:2px;background:rgba(15,59,51,.55);z-index:3;pointer-events:none}
.header-progress-bar{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--copper),var(--copper-light));
  transition:transform .12s linear;
}

.masthead{position:relative;padding:16px var(--gutter) 12px;transition:padding .22s ease}
.masthead-inner{position:relative;max-width:var(--w);margin-inline:auto;text-align:center}
.masthead-kicker{
  display:flex;align-items:center;justify-content:center;gap:10px;
  margin-bottom:9px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;
  color:rgba(246,241,228,.62);
}
.masthead-issue{color:var(--copper-light);letter-spacing:.22em}
.masthead-dot{display:inline-block;width:4px;height:4px;border-radius:50%;background:var(--cinnabar)}
.masthead-brand{display:inline-block;text-decoration:none;color:inherit}
.masthead-brand-name{
  display:block;
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(26px,4.2vw,44px);line-height:1.12;letter-spacing:-.01em;
  color:var(--paper);
  transition:font-size .22s ease,letter-spacing .22s ease;
}
.masthead-brand-sub{
  display:block;margin-top:8px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  color:rgba(246,241,228,.58);
}

.masthead-index{position:relative;background:var(--green-2);border-top:1px solid rgba(217,184,118,.28)}
.masthead-index-inner{
  position:relative;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  max-width:var(--w);margin-inline:auto;padding-inline:var(--gutter);
}

.site-nav{display:flex;align-items:center;flex:1 1 auto;min-width:0}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;gap:0}
.nav-link{
  position:relative;display:inline-flex;align-items:baseline;gap:7px;
  padding:13px 15px;
  font-size:15px;color:rgba(246,241,228,.78);text-decoration:none;
  transition:color .16s ease;
}
.nav-link::after{
  content:"";position:absolute;left:15px;right:15px;bottom:7px;height:1px;
  background:var(--copper-light);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-num{font-family:var(--font-mono);font-size:10.5px;font-weight:700;letter-spacing:.08em;color:rgba(217,184,118,.6)}
.nav-label{letter-spacing:.03em}
.nav-link[aria-current="page"]{color:var(--paper);font-weight:600}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--cinnabar);height:2px}
.nav-link[aria-current="page"] .nav-num{color:var(--copper-light)}

.nav-cta{
  flex:0 0 auto;
  padding:6px 0 6px 18px;border-left:1px solid rgba(217,184,118,.34);
  font-size:13.5px;letter-spacing:.1em;color:var(--cream);text-decoration:none;
  transition:color .16s ease;
}
.nav-cta::after{content:"\2192";margin-left:7px;font-family:var(--font-mono);color:var(--copper-light)}
.nav-cta:hover{color:var(--copper-light)}

.nav-toggle{
  position:absolute;top:14px;right:0;
  display:none;align-items:center;gap:8px;
  padding:8px 12px;border-radius:2px;
  border:1px solid rgba(217,184,118,.45);background:transparent;color:var(--cream);
  font-size:13px;letter-spacing:.12em;cursor:pointer;
  transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover{border-color:var(--copper-light);color:var(--copper-light)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:16px}
.nav-toggle-bars span{display:block;height:1.5px;background:currentColor;transition:transform .2s ease,opacity .2s 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-text{line-height:1}

/* 刊头收拢态 */
.site-header[data-compact] .masthead{padding-block:8px 6px}
.site-header[data-compact] .masthead-kicker{display:none}
.site-header[data-compact] .masthead-brand-sub{display:none}
.site-header[data-compact] .masthead-brand-name{font-size:clamp(19px,2.4vw,26px);letter-spacing:.02em}

/* ================= 页脚 ================= */
.site-footer{
  margin-top:clamp(44px,6vw,88px);
  background:var(--green);color:rgba(246,241,228,.78);
  border-top:3px solid var(--copper);
}
.footer-inner{max-width:var(--w);margin-inline:auto;padding:clamp(34px,5vw,60px) var(--gutter) 0}
.footer-top{
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,2.1fr);
  gap:clamp(28px,4vw,56px);
  padding-bottom:clamp(28px,4vw,48px);
}
.footer-brand-name{font-family:var(--font-display);font-size:clamp(20px,2.4vw,26px);font-weight:700;color:var(--paper);letter-spacing:.02em;line-height:1.3}
.footer-brand-note{margin-top:12px;max-width:30em;font-size:14px;line-height:1.8;color:rgba(246,241,228,.64)}
.footer-seal{margin-top:16px;font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;color:var(--copper-light)}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:clamp(20px,3vw,36px)}
.footer-col-title{
  margin-bottom:14px;padding-bottom:8px;
  border-bottom:1px solid rgba(217,184,118,.3);
  font-family:var(--font-display);font-size:15px;font-weight:700;letter-spacing:.1em;
  color:var(--copper-light);
}
.footer-list{display:flex;flex-direction:column;gap:9px;font-size:14px;line-height:1.7}
.footer-link{color:rgba(246,241,228,.8);text-decoration:none;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.footer-link:hover{color:var(--copper-light);border-bottom-color:var(--copper-light)}
.footer-contact{font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;color:rgba(246,241,228,.7);word-break:break-all}
.footer-addr{font-size:13.5px;color:rgba(246,241,228,.6);line-height:1.7}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:10px 24px;
  padding-block:20px 26px;
  border-top:1px solid rgba(217,184,118,.28);
  font-size:12.5px;
}
.footer-bottom-line{color:rgba(246,241,228,.6);letter-spacing:.05em}
.footer-bottom-meta{font-family:var(--font-mono);font-size:12px;color:rgba(246,241,228,.46);letter-spacing:.06em}

/* ================= 响应式 ================= */
@media (max-width:1080px){
  .nav-link{padding:13px 11px;font-size:14px}
  .nav-link::after{left:11px;right:11px}
}

@media (max-width:900px){
  html{scroll-padding-top:120px}
  .nav-toggle{display:inline-flex}
  .masthead{padding-top:18px}
  .masthead-index-inner{padding-block:8px}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;
    display:block;flex:none;
    padding:6px var(--gutter) 20px;
    background:var(--green);
    border-top:1px solid rgba(217,184,118,.32);
    border-bottom:1px solid rgba(217,184,118,.32);
    max-height:calc(100vh - 120px);overflow-y:auto;
    opacity:0;visibility:hidden;transform:translateY(-6px);
    transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
  }
  .site-nav[data-open]{opacity:1;visibility:visible;transform:none}
  .nav-list{flex-direction:column;align-items:stretch;width:100%}
  .nav-list li{width:100%}
  .nav-link{
    width:100%;justify-content:flex-start;
    padding:15px 2px;font-size:16px;
    border-bottom:1px solid rgba(217,184,118,.16);
  }
  .nav-link::after{left:2px;right:auto;width:26px;bottom:9px}
  .nav-cta{margin-left:auto;border-left:0;padding-left:0;font-size:13px}
  .footer-top{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:720px){
  .grid-2,.grid-3,.grid-asym{grid-template-columns:minmax(0,1fr)}
  .section + .section{border-top:1px solid var(--line-soft)}
  .accordion-trigger{font-size:16px}
}

@media (max-width:520px){
  body{font-size:16px}
  .masthead-kicker{font-size:10.5px;letter-spacing:.14em}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .filter-count{margin-left:0;width:100%}
}

@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}
  .header-progress-bar{transition:none !important}
}