:root{
  color-scheme:dark;
  --ink-900:#071C16;
  --ink-800:#0D2A21;
  --ink-700:#123C2F;
  --lime:#C8FF3D;
  --orange:#FF7A1A;
  --steel:#8FA6B8;
  --stone:#2B3531;
  --clay:#C77B5C;
  --bone:#F3EBDD;
  --line:rgba(143,166,184,.26);
  --line-strong:rgba(143,166,184,.48);
  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","Source Han Sans SC",system-ui,sans-serif;
  --font-editorial:"Noto Serif SC","Source Han Serif SC",Georgia,"Times New Roman",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shadow-hard:8px 8px 0 rgba(4,14,10,.92);
  --shadow-soft:5px 5px 0 var(--ink-700);
  --gutter:clamp(1.15rem,3.2vw,2rem);
  --pad:clamp(1.15rem,2.4vw,1.85rem);
  --header-h:6.4rem;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--ink-900);
  color:var(--bone);
  font:400 1rem/1.75 var(--font-body);
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:var(--ink-900)}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
#main-content{display:block;scroll-margin-top:7rem}

.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 布局骨架 ---------- */
.wrap{width:min(1240px,calc(100% - 2*var(--gutter)));margin-inline:auto}
.section{padding-block:clamp(2.9rem,7vw,5.5rem)}
.section--tight{padding-block:clamp(1.8rem,4vw,3rem)}
.grid{display:grid;gap:clamp(1rem,2.1vw,1.8rem)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- 文字层级 ---------- */
.eyebrow{
  display:inline-block;
  font:600 .74rem/1.4 var(--font-mono);
  letter-spacing:.2em;text-transform:uppercase;color:var(--lime);
}
.display-lg{
  font:700 clamp(2.2rem,4.8vw,4.6rem)/.95 var(--font-display);
  letter-spacing:.005em;text-transform:uppercase;color:var(--bone);
}
.h-editorial{
  font:600 clamp(1.35rem,2.2vw,2rem)/1.32 var(--font-editorial);
  letter-spacing:.01em;color:var(--bone);
}
.lede{
  font-size:clamp(1rem,1.15vw,1.12rem);line-height:1.85;
  color:var(--steel);max-width:62ch;
}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-weight:600}

/* ---------- 分割线 ---------- */
.rule{
  height:2px;border:0;margin-block:clamp(1.4rem,3vw,2.4rem);
  background:var(--ink-700);
}
.rule--accent{
  background:linear-gradient(90deg,var(--lime) 0 12%,var(--orange) 12% 19%,var(--ink-700) 19% 100%);
}

/* ---------- 面板 ---------- */
.panel{
  background:var(--ink-800);
  border:2px solid var(--ink-700);
  box-shadow:var(--shadow-hard);
  padding:var(--pad);
}
.panel--flat{box-shadow:none}
.panel--lime{border-color:var(--lime)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:.55rem;
  padding:.85rem 1.3rem;border:2px solid var(--lime);
  background:var(--lime);color:var(--ink-900);
  font:700 .95rem/1.1 var(--font-body);letter-spacing:.03em;
  box-shadow:4px 4px 0 var(--orange);
  transition:transform .16s ease,box-shadow .16s ease,background-color .16s ease,color .16s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--orange)}
.btn:active{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--orange)}
.btn--ghost{
  background:transparent;color:var(--bone);border-color:var(--line-strong);
  box-shadow:4px 4px 0 var(--ink-700);
}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);box-shadow:6px 6px 0 var(--ink-700)}
.btn--sm{padding:.6rem .95rem;font-size:.85rem;box-shadow:3px 3px 0 var(--orange)}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:.35rem;
  padding:.24rem .58rem;border:1px solid var(--line-strong);
  font:600 .72rem/1.55 var(--font-mono);letter-spacing:.1em;
  text-transform:uppercase;color:var(--steel);
}
.tag--lime{border-color:var(--lime);color:var(--lime)}
.tag--orange{border-color:var(--orange);color:var(--orange)}
.tag--clay{border-color:var(--clay);color:var(--clay)}
.tag--solid{background:var(--lime);border-color:var(--lime);color:var(--ink-900)}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;
  font:500 .74rem/1.6 var(--font-mono);letter-spacing:.08em;color:var(--steel);
}
.crumbs a{color:var(--steel);border-bottom:1px solid var(--line-strong);transition:color .16s,border-color .16s}
.crumbs a:hover{color:var(--lime);border-bottom-color:var(--lime)}
.crumbs__sep{color:var(--stone)}
.crumbs [aria-current="page"]{color:var(--bone)}

/* ---------- 长文容器 ---------- */
.prose{max-width:70ch;color:var(--steel)}
.prose > * + *{margin-top:1.05em}
.prose h2{
  font:600 clamp(1.3rem,2vw,1.75rem)/1.35 var(--font-editorial);
  color:var(--bone);margin-top:2.1em;
}
.prose h3{
  font:700 1.05rem/1.5 var(--font-body);
  letter-spacing:.04em;color:var(--bone);margin-top:1.8em;
}
.prose p{font-size:1rem;line-height:1.9}
.prose strong{color:var(--bone)}
.prose ul,.prose ol{list-style:disc;padding-left:1.35rem}
.prose ol{list-style:decimal}
.prose li{margin-block:.45em}
.prose a{color:var(--lime);border-bottom:1px solid rgba(200,255,61,.45)}
.prose a:hover{border-bottom-color:var(--lime)}
.prose blockquote{
  border-left:3px solid var(--orange);padding:.4rem 0 .4rem 1.1rem;
  font-family:var(--font-editorial);color:var(--bone);
}

/* ---------- 图片容器基础 ---------- */
.media{
  position:relative;overflow:hidden;
  border:2px solid var(--ink-700);
  background:linear-gradient(150deg,var(--ink-800) 0%,var(--ink-900) 100%);
  box-shadow:var(--shadow-soft);
}
.media img{width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--placeholder::before{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(135deg,rgba(143,166,184,.14) 0 2px,transparent 2px 14px);
}
.media__scrim{
  position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,28,22,0) 42%,rgba(7,28,22,.86) 100%);
}
.media__tag{position:absolute;left:.7rem;bottom:.7rem;z-index:2}

/* ============ 共享页头 ============ */
.skip-link{
  position:absolute;left:1rem;top:-120px;z-index:300;
  padding:.72rem 1.1rem;background:var(--lime);color:var(--ink-900);
  font:700 .9rem/1 var(--font-body);letter-spacing:.04em;
  transition:top .18s ease;
}
.skip-link:focus{top:.55rem}

.site-header{
  position:sticky;top:0;z-index:80;
  background:var(--ink-900);
  border-bottom:2px solid var(--ink-700);
  box-shadow:0 10px 0 -6px rgba(0,0,0,.35);
}
.masthead{background:linear-gradient(180deg,var(--ink-900) 0%,var(--ink-800) 100%)}
.masthead__inner{
  width:min(1240px,calc(100% - 2*var(--gutter)));
  margin-inline:auto;
  padding:.85rem 0 0;
}
.masthead__top{display:flex;align-items:center;gap:1rem}
.masthead__note{
  flex:1 1 0;min-width:0;
  font:500 .7rem/1.5 var(--font-mono);
  letter-spacing:.16em;text-transform:uppercase;color:var(--steel);
}
.brand{display:inline-flex;align-items:center;gap:.62rem;flex:0 0 auto;color:var(--bone)}
.brand__mark{
  display:grid;place-items:center;
  width:2.35rem;height:2.35rem;
  background:var(--lime);color:var(--ink-900);
  font:700 1.02rem/1 var(--font-display);letter-spacing:.02em;
  box-shadow:3px 3px 0 var(--orange);
  transition:transform .16s ease;
}
.brand:hover .brand__mark{transform:translate(-1px,-1px)}
.brand__name{
  font:700 clamp(1.15rem,2.3vw,1.62rem)/1 var(--font-display);
  letter-spacing:.05em;text-transform:uppercase;color:var(--bone);
}
.masthead__quick{
  flex:1 1 0;min-width:0;
  display:flex;align-items:center;justify-content:flex-end;gap:.45rem;
}
.quick-link{
  padding:.46rem .72rem;
  border:1px solid var(--ink-700);
  font:600 .78rem/1.1 var(--font-body);letter-spacing:.05em;color:var(--bone);
  background:rgba(18,60,47,.35);
  transition:border-color .16s ease,color .16s ease,background-color .16s ease;
}
.quick-link:hover{border-color:var(--lime);color:var(--lime)}
.quick-link--accent{
  background:var(--lime);border-color:var(--lime);color:var(--ink-900);
  box-shadow:3px 3px 0 var(--orange);
}
.quick-link--accent:hover{background:var(--bone);border-color:var(--bone);color:var(--ink-900)}

.site-nav{border-top:1px solid var(--line);margin-top:.8rem}
.nav__list{display:flex;justify-content:center;flex-wrap:wrap;gap:0 .1rem}
.nav__item{list-style:none}
.nav__link{
  position:relative;display:block;padding:.82rem 1.05rem;
  font:600 .92rem/1.1 var(--font-body);letter-spacing:.04em;color:var(--steel);
  transition:color .18s ease,background-color .18s ease;
}
.nav__link::after{
  content:"";position:absolute;left:1.05rem;right:1.05rem;bottom:.42rem;height:2px;
  background:var(--lime);transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav__link:hover,.nav__link:focus-visible{color:var(--bone)}
.nav__link:hover::after,.nav__link:focus-visible::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{
  background:var(--lime);color:var(--ink-900);
}
.nav__link[aria-current="page"]::after{transform:scaleX(0)}

.nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.55rem .75rem;cursor:pointer;
  background:transparent;border:1px solid var(--ink-700);color:var(--bone);
  font:600 .74rem/1 var(--font-mono);letter-spacing:.14em;text-transform:uppercase;
  transition:border-color .16s ease,color .16s ease;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{display:grid;gap:3px;width:16px}
.nav-toggle__bar{height:2px;background:currentColor;transition:transform .2s ease,opacity .2s ease}
.nav-toggle__text{margin-left:.1rem}
.site-header[data-open="true"] .nav-toggle{border-color:var(--lime);color:var(--lime)}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ============ 共享页脚 ============ */
.site-footer{
  margin-top:clamp(2.5rem,6vw,4.5rem);
  background:var(--ink-900);
  border-top:2px solid var(--ink-700);
  color:var(--steel);
}
.site-footer::before{
  content:"";display:block;height:3px;
  background:linear-gradient(90deg,var(--lime) 0 18%,var(--orange) 18% 25%,var(--ink-700) 25% 100%);
}
.footer__inner{width:min(1240px,calc(100% - 2*var(--gutter)));margin-inline:auto;padding:clamp(2rem,4vw,3.2rem) 0 1.4rem}
.footer__grid{display:grid;grid-template-columns:1.65fr 1fr 1fr 1.35fr;gap:clamp(1.4rem,3vw,2.6rem)}
.footer__brand{display:flex;flex-direction:column;gap:.9rem;align-items:flex-start}
.brand--footer .brand__name{font-size:clamp(1.1rem,2vw,1.4rem)}
.footer__statement{font-size:.94rem;line-height:1.85;color:var(--bone);max-width:34ch}
.footer__note{
  font-size:.8rem;line-height:1.8;color:var(--steel);
  border-left:2px solid var(--ink-700);padding-left:.7rem;max-width:34ch;
}
.footer__col{display:flex;flex-direction:column;gap:.7rem;min-width:0}
.footer__col-title{
  font:600 .72rem/1.4 var(--font-mono);letter-spacing:.2em;
  text-transform:uppercase;color:var(--lime);padding-bottom:.55rem;
  border-bottom:1px solid var(--ink-700);
}
.footer__list{display:grid;gap:.5rem}
.footer__list--contact{gap:.55rem}
.footer__link{
  display:inline-block;font-size:.9rem;line-height:1.6;color:var(--steel);
  border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease;
}
.footer__link:hover{color:var(--bone);border-bottom-color:var(--orange)}
.footer__link--legal{font-size:.78rem;font-family:var(--font-mono);letter-spacing:.04em}
.footer__contact-row{
  display:flex;align-items:center;justify-content:space-between;gap:.6rem;
  padding:.45rem .6rem;background:var(--ink-800);border:1px solid var(--ink-700);
}
.footer__contact-row--plain{justify-content:flex-start}
.footer__contact-text{font-size:.8rem;line-height:1.5;color:var(--bone);word-break:break-all}
.copy-btn{
  flex:0 0 auto;padding:.32rem .5rem;cursor:pointer;
  background:transparent;border:1px solid var(--ink-700);color:var(--lime);
  font:600 .7rem/1 var(--font-mono);letter-spacing:.1em;
  transition:background-color .16s ease,color .16s ease,border-color .16s ease;
}
.copy-btn:hover{background:var(--lime);border-color:var(--lime);color:var(--ink-900)}
.copy-btn:active{transform:translateY(1px)}
.footer__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.8rem 1.5rem;margin-top:clamp(1.6rem,3.5vw,2.6rem);
  padding-top:1.1rem;border-top:1px solid var(--line);
}
.footer__legal{font:400 .78rem/1.6 var(--font-mono);letter-spacing:.04em;color:var(--steel)}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem}

/* ---------- 滚动进度与显现 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:3px;z-index:120;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--lime),var(--orange));
  pointer-events:none;
}
.js-reveal [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .55s ease,transform .55s ease;
  transition-delay:var(--reveal-delay,0ms);
  will-change:opacity,transform;
}
.js-reveal [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1 / -1}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 移动导航断点 ---------- */
@media (max-width:900px){
  .masthead__note{display:none}
  .masthead__quick .quick-link{display:none}
  .nav-toggle{display:inline-flex}
  .masthead__inner{padding:.75rem 0 0}
  .site-nav{
    display:none;
    border-top:1px solid var(--line);
    margin-top:.75rem;
    padding-bottom:.85rem;
    max-height:calc(100dvh - 5.5rem);
    overflow-y:auto;
  }
  .site-header[data-open="true"] .site-nav{display:block}
  .nav__list{flex-direction:column;justify-content:flex-start;gap:0}
  .nav__link{
    padding:.78rem .2rem;border-bottom:1px solid var(--line);
    font-size:.96rem;
  }
  .nav__link::after{display:none}
  .nav__link[aria-current="page"]{padding-left:.7rem;padding-right:.7rem}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 手机 ---------- */
@media (max-width:640px){
  .wrap{width:calc(100% - 2rem)}
  .masthead__inner,.footer__inner{width:calc(100% - 2rem)}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr}
  .footer__base{flex-direction:column;align-items:flex-start}
  .footer__legal-links{width:100%}
  .panel{box-shadow:5px 5px 0 rgba(4,14,10,.92)}
  .btn{width:100%;justify-content:center}
  .btn--sm{width:auto}
  .brand__mark{width:2.1rem;height:2.1rem;font-size:.95rem}
}

/* ---------- 无障碍：减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .btn:hover,.btn:active{transform:none}
}