:root{
  --apple:#6DB33F;
  --pulp:#CFE8B8;
  --gold:#A8791E;
  --gold-light:#E6C37A;
  --ink:#151815;
  --paper:#F3EFE3;
  --rose:#D93B64;
  --mist:#7FA99A;
  --stone:#5B665D;

  --frame:3px;
  --edge:clamp(16px,4vw,44px);
  --measure:1180px;
  --dur:200ms;
  --ease:cubic-bezier(.2,.7,.3,1);
  --shadow-hard:7px 7px 0 var(--ink);
  --shadow-gold:8px 8px 0 var(--gold-light);
  --shadow-apple:8px 8px 0 var(--apple);

  --font-display:"Songti SC","Noto Serif SC","Source Han Serif SC","SimSun","Times New Roman",serif;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"SFMono-Regular",Menlo,Consolas,"Liberation Mono","Courier New",monospace;
}

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

html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}

body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
a{color:inherit}
button{font:inherit;color:inherit;background:none;border:0}
main{display:block}

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

h1,h2,h3{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.01em;
}
h1{font-size:clamp(44px,7.4vw,104px);line-height:.98}
h2{font-size:clamp(26px,3.6vw,40px);line-height:1.12}
h3{font-size:clamp(19px,2.2vw,24px);line-height:1.25}
h4{font-size:18px;font-weight:800;line-height:1.35}
strong{font-weight:800}

/* ---------- 布局容器 ---------- */
.container{
  width:100%;
  max-width:var(--measure);
  margin-inline:auto;
  padding-inline:var(--edge);
}
.section{padding-block:clamp(40px,7vw,88px)}
.section--tight{padding-block:clamp(24px,4vw,48px)}
.prose{max-width:68ch}
.prose p + p{margin-top:1em}
.prose ul{list-style:none;margin:1em 0}
.prose li{
  position:relative;
  padding-left:20px;
  margin-bottom:.55em;
}
.prose li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:9px;height:9px;
  background:var(--apple);
  border:2px solid var(--ink);
}

/* ---------- 索引式小字 ---------- */
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.22em;
  color:var(--stone);
  border-bottom:2px solid var(--gold-light);
  padding-bottom:3px;
}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  gap:14px 24px;
  margin-bottom:clamp(20px,3vw,36px);
}
.section-num{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(56px,9vw,120px);
  line-height:.78;
  letter-spacing:-.04em;
  color:var(--gold);
}
.section-head-body{flex:1 1 260px;min-width:0}
.section-head-body p{color:var(--stone);font-size:15px;margin-top:6px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:800;
  line-height:1.2;
  text-decoration:none;
  color:var(--ink);
  background:var(--gold-light);
  border:var(--frame) solid var(--ink);
  box-shadow:5px 5px 0 var(--ink);
  cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--ink)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn-primary{background:var(--apple)}
.btn-primary:hover{background:#7cc24a}
.btn-rose{background:var(--rose);color:var(--paper)}
.btn-ghost{background:var(--paper)}
.btn-sm{padding:8px 14px;font-size:13px;box-shadow:3px 3px 0 var(--ink)}
.btn-sm:hover{box-shadow:5px 5px 0 var(--ink)}

/* ---------- 卡片 / 标签 ---------- */
.panel{
  background:var(--paper);
  border:var(--frame) solid var(--ink);
  box-shadow:var(--shadow-gold);
  padding:clamp(18px,2.4vw,28px);
}
.panel-pulp{background:var(--pulp);box-shadow:var(--shadow-apple)}
.panel-ink{background:var(--ink);color:var(--paper);box-shadow:8px 8px 0 var(--gold)}
.panel-ink .eyebrow{color:var(--gold-light);border-bottom-color:rgba(230,195,122,.5)}
.panel-ink h2,.panel-ink h3{color:var(--paper)}
.panel h2,.panel h3{margin-bottom:.4em}

.tag{
  display:inline-block;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  line-height:1.5;
  padding:3px 9px;
  background:var(--pulp);
  border:2px solid var(--ink);
  color:var(--ink);
}
.tag--gold{background:var(--gold-light)}
.tag--rose{background:var(--rose);color:var(--paper);border-color:var(--ink)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(14px,2vw,26px)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.grid-4{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  padding-block:18px 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--stone);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.breadcrumb li{display:flex;align-items:center;gap:6px}
.breadcrumb li + li::before{content:"/";color:var(--gold)}
.breadcrumb a{
  color:var(--ink);
  text-decoration:none;
  border-bottom:2px solid transparent;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.breadcrumb a:hover{border-bottom-color:var(--apple);color:var(--apple)}
.breadcrumb [aria-current="page"]{color:var(--stone)}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  aspect-ratio:4/3;
  background:var(--pulp);
  border:var(--frame) solid var(--ink);
  box-shadow:var(--shadow-gold);
}
.media img{width:100%;height:100%;object-fit:cover;display:block}
.media-wide{aspect-ratio:16/9}
.media-tall{aspect-ratio:3/4}
.media-square{aspect-ratio:1/1}
.media-cut{clip-path:polygon(0 0,100% 0,100% calc(100% - 32px),calc(100% - 32px) 100%,0 100%)}
.media-caption{
  position:absolute;
  left:0;bottom:0;
  max-width:100%;
  padding:6px 12px;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  line-height:1.5;
}
.media-placeholder{
  display:grid;
  place-items:center;
  width:100%;
  height:100%;
  min-height:140px;
  padding:16px;
  text-align:center;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--stone);
  background:repeating-linear-gradient(135deg,var(--pulp) 0 12px,#c2dfa4 12px 24px);
}

/* ================= 页头 ================= */
.skip-link{
  position:absolute;
  left:-9999px;
  top:0;
  z-index:300;
  padding:12px 20px;
  background:var(--ink);
  color:var(--paper);
  font-weight:800;
  text-decoration:none;
  border:var(--frame) solid var(--gold-light);
}
.skip-link:focus{left:12px;top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--paper);
  border-bottom:var(--frame) solid var(--ink);
}
.site-header::after{
  content:"";
  display:block;
  height:6px;
  background:linear-gradient(90deg,
    var(--apple) 0 34%,
    var(--gold) 34% 58%,
    var(--rose) 58% 68%,
    var(--mist) 68% 84%,
    var(--ink) 84% 100%);
}
.header-shell{
  display:grid;
  grid-template-columns:52px minmax(0,1fr);
  align-items:stretch;
}
.header-rail{
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--ink);
  color:var(--gold-light);
  writing-mode:vertical-rl;
  text-orientation:mixed;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.4em;
  padding-block:12px;
}
.header-body{min-width:0}
.header-bar{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,22px);
  padding:11px clamp(12px,2.4vw,26px);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  text-decoration:none;
  color:var(--ink);
}
.brand-seal{
  display:grid;
  place-items:center;
  width:42px;
  height:42px;
  flex:0 0 auto;
  background:var(--apple);
  border:var(--frame) solid var(--ink);
  box-shadow:3px 3px 0 var(--gold);
  font-family:var(--font-display);
  font-weight:900;
  font-size:21px;
  line-height:1;
}
.brand-text{display:block;min-width:0}
.brand-mark{
  display:block;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(17px,2.1vw,23px);
  line-height:1.15;
  letter-spacing:.02em;
}
.brand-line{
  display:block;
  margin-top:2px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--stone);
}
.header-note{
  flex:1 1 auto;
  max-width:26ch;
  padding-left:12px;
  border-left:2px solid var(--gold-light);
  font-size:12px;
  line-height:1.5;
  color:var(--stone);
}
.header-cta{margin-left:auto;flex:0 0 auto;white-space:nowrap}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:8px 13px;
  background:var(--apple);
  border:var(--frame) solid var(--ink);
  box-shadow:3px 3px 0 var(--ink);
  font-size:13px;
  font-weight:800;
  cursor:pointer;
  transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-toggle:hover{transform:translate(-1px,-1px);box-shadow:4px 4px 0 var(--ink)}
.nav-toggle-icon{
  position:relative;
  display:block;
  width:16px;
  height:12px;
}
.nav-toggle-icon::before,
.nav-toggle-icon::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:2px;
  background:var(--ink);
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle-icon::before{top:0}
.nav-toggle-icon::after{top:10px}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before{top:5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after{top:5px;transform:rotate(-45deg)}
.nav-toggle-text{letter-spacing:.08em}

.site-nav{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,.92fr);
  border-top:1px solid rgba(21,24,21,.18);
}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px 2px;
  padding:8px clamp(12px,2.4vw,26px);
}
.nav-link{
  position:relative;
  display:inline-block;
  padding:7px 12px 9px;
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  color:var(--ink);
  border:2px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;right:12px;bottom:4px;
  height:2px;
  background:var(--apple);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--dur) var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{background:var(--pulp)}
.nav-link:hover::after,
.nav-link:focus-visible::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  background:var(--apple);
  border-color:var(--ink);
  box-shadow:3px 3px 0 var(--ink);
}
.nav-link[aria-current="page"]::after{display:none}

.nav-accent{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 14px;
  padding:8px clamp(12px,2.4vw,26px);
  background:var(--apple);
  border-left:var(--frame) solid var(--ink);
  color:var(--ink);
}
.nav-accent-title{
  flex:0 0 auto;
  padding:2px 8px;
  background:var(--paper);
  border:2px solid var(--ink);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.2em;
  line-height:1.6;
}
.nav-accent-list{
  display:flex;
  flex-wrap:wrap;
  gap:4px 16px;
}
.nav-accent-list a{
  font-size:13.5px;
  font-weight:700;
  text-decoration:none;
  color:var(--ink);
  border-bottom:2px solid rgba(21,24,21,.32);
  padding-bottom:1px;
  transition:border-color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.nav-accent-list a:hover,
.nav-accent-list a:focus-visible{
  border-bottom-color:var(--ink);
  background:rgba(243,239,227,.55);
}

/* ================= 页脚 ================= */
.site-footer{
  position:relative;
  overflow:hidden;
  background:var(--ink);
  color:var(--paper);
  border-top:6px solid var(--gold);
}
.site-footer::before{
  content:"問鼎";
  position:absolute;
  right:-.08em;
  bottom:-.28em;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(120px,26vw,320px);
  line-height:.8;
  color:rgba(230,195,122,.07);
  pointer-events:none;
  user-select:none;
}
.footer-shell{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--measure);
  margin-inline:auto;
  padding:clamp(36px,6vw,72px) var(--edge) 26px;
}
.footer-lead{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto;
  align-items:end;
  gap:24px;
  padding-bottom:26px;
  border-bottom:2px solid rgba(230,195,122,.35);
}
.footer-ident{min-width:0}
.footer-brand{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(30px,5vw,54px);
  line-height:1.02;
  letter-spacing:.03em;
  color:var(--paper);
}
.footer-line{
  margin-top:10px;
  font-size:14px;
  letter-spacing:.04em;
  color:var(--gold-light);
}
.footer-seal{
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  width:clamp(70px,9vw,92px);
  aspect-ratio:1/1;
  border:3px solid var(--gold-light);
  border-radius:50%;
  box-shadow:inset 0 0 0 4px rgba(230,195,122,.25);
  color:var(--gold-light);
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(15px,2vw,20px);
  line-height:1.05;
  letter-spacing:.06em;
  transform:rotate(-8deg);
  flex:0 0 auto;
}
.footer-nav{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,40px);
  padding:30px 0;
}
.footer-col-title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.24em;
  color:var(--gold-light);
  margin-bottom:12px;
  padding-bottom:6px;
  border-bottom:2px solid rgba(230,195,122,.35);
}
.footer-col ul{display:grid;gap:8px}
.footer-col a{
  display:inline-block;
  font-size:15px;
  text-decoration:none;
  color:var(--paper);
  border-bottom:2px solid transparent;
  padding-bottom:2px;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-col a:hover,
.footer-col a:focus-visible{color:var(--gold-light);border-bottom-color:var(--gold-light)}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:18px 26px;
  padding:24px 0;
  border-top:1px solid rgba(243,239,227,.18);
}
.footer-contact-label{
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.2em;
  color:var(--gold-light);
  margin-bottom:5px;
}
.footer-contact-value{
  font-size:15px;
  line-height:1.6;
  color:var(--paper);
  word-break:break-word;
}
.footer-note{
  max-width:64ch;
  font-size:12.5px;
  line-height:1.75;
  color:rgba(243,239,227,.7);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 22px;
  margin-top:24px;
  padding-top:16px;
  border-top:2px solid rgba(230,195,122,.3);
}
.footer-legal{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--gold-light);
}
.footer-meta{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:rgba(243,239,227,.68);
}

/* ================= JS 注入组件 ================= */
.scroll-progress{
  position:fixed;
  top:0;left:0;
  height:4px;
  width:0;
  z-index:200;
  background:linear-gradient(90deg,var(--apple),var(--gold),var(--rose));
  pointer-events:none;
  transition:width 90ms linear;
}
.to-top{
  position:fixed;
  right:18px;
  bottom:18px;
  z-index:150;
  display:grid;
  place-items:center;
  width:48px;
  height:48px;
  font-size:20px;
  font-weight:900;
  line-height:1;
  background:var(--gold-light);
  color:var(--ink);
  border:var(--frame) solid var(--ink);
  box-shadow:4px 4px 0 var(--ink);
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{box-shadow:6px 6px 0 var(--ink)}

.has-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity 420ms var(--ease),transform 420ms var(--ease);
}
.has-js [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ================= 响应式 ================= */
@media (max-width:1100px){
  .header-note{display:none}
}

@media (max-width:900px){
  .header-shell{grid-template-columns:34px minmax(0,1fr)}
  .header-rail{font-size:10px;letter-spacing:.3em}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    display:none;
    grid-template-columns:minmax(0,1fr);
    border-top:var(--frame) solid var(--ink);
  }
  .site-nav[data-open]{display:grid}
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:6px;
    padding:12px clamp(12px,2.4vw,26px) 14px;
  }
  .nav-link{
    display:block;
    padding:10px 12px;
    background:var(--paper);
    border:2px solid rgba(21,24,21,.28);
  }
  .nav-link::after{display:none}
  .nav-link:hover{border-color:var(--ink)}
  .nav-link[aria-current="page"]{box-shadow:none}
  .nav-accent{
    flex-direction:column;
    align-items:flex-start;
    border-left:0;
    border-top:var(--frame) solid var(--ink);
    padding:14px clamp(12px,2.4vw,26px) 18px;
  }
  .nav-accent-list{flex-direction:column;gap:8px}
  .footer-lead{grid-template-columns:minmax(0,1fr)}
  .footer-seal{justify-self:start;transform:rotate(-6deg)}
  .footer-nav{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:620px){
  body{font-size:16px}
  .brand-line{display:none}
  .brand-seal{width:36px;height:36px;font-size:18px}
  .footer-nav{grid-template-columns:minmax(0,1fr)}
  .footer-base{flex-direction:column;align-items:flex-start}
  .site-footer::before{font-size:clamp(90px,34vw,180px)}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .has-js [data-reveal]{opacity:1 !important;transform:none !important}
  .to-top{transform:none !important}
}

@media print{
  .site-header{position:static}
  .scroll-progress,.to-top,.nav-toggle,.skip-link{display:none !important}
  body{background:#fff;color:#000}
  .site-footer{background:#fff;color:#000;border-top-color:#000}
  .footer-brand,.footer-line,.footer-col a,.footer-contact-value,.footer-note,.footer-meta{color:#000}
}