/* ============ 01 · 设计变量 ============ */
:root{
  --ink:#07120F;
  --ink-2:#0E2A22;
  --turf:#143A2E;
  --lime:#C8FF3D;
  --amber:#FFB547;
  --paper:#F4F1E8;
  --mist:#9AB0A7;
  --red:#FF6B4A;
  --cyan:#5AD8C0;
  --line:#2A3A33;
  --shell:1240px;
  --gutter:clamp(16px,4vw,56px);
  --header-h:60px;
  --mono:ui-monospace,SFMono-Regular,"IBM Plex Mono","Roboto Mono",Menlo,Consolas,monospace;
  --sans:-apple-system,BlinkMacSystemFont,"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",sans-serif;
  --ease:cubic-bezier(.22,.7,.3,1);
}
@media (max-width:599px){
  :root{--header-h:54px}
}

/* ============ 02 · 重置与中文排版 ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 480px at 82% -6%,rgba(200,255,61,.075),transparent 62%),
    radial-gradient(860px 420px at 2% -2%,rgba(90,216,192,.06),transparent 64%);
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--sans);
  font-weight:800;
  letter-spacing:-.04em;
  line-height:1.14;
  font-stretch:condensed;
}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--cyan);text-decoration:none;transition:color .18s var(--ease)}
a:hover{color:var(--lime)}
ul,ol{margin:0;padding:0}
li{list-style:none}
strong,b{color:var(--paper);font-weight:700}
small{font-size:12.5px;color:var(--mist)}
::selection{background:var(--lime);color:#08150F}
:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
#main-content{display:block;scroll-margin-top:calc(var(--header-h) + 14px)}

/* ============ 03 · 跳转链接 ============ */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 16px;
  background:var(--lime);
  color:#08150F;
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  border-radius:2px;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0);color:#08150F}

/* ============ 04 · 容器、网格与正文 ============ */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.prose{
  max-width:40em;
  font-size:17px;
  line-height:1.9;
  color:rgba(244,241,232,.86);
}
.prose h2,.prose h3{margin:1.6em 0 .6em;color:var(--paper);letter-spacing:-.03em}
.prose p{margin:0 0 1.1em}
.lead{
  max-width:36em;
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.85;
  color:rgba(244,241,232,.82);
}
.grid{
  display:grid;
  gap:clamp(14px,2.2vw,28px);
  grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr));
}
.grid--tight{gap:10px}
.grid--wide{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.stage{
  position:relative;
  padding-block:clamp(44px,7vw,96px);
}
.stage + .stage{border-top:1px solid rgba(42,58,51,.6)}
.rule{
  height:1px;
  margin:clamp(26px,4vw,46px) 0;
  border:0;
  background:linear-gradient(90deg,var(--line),rgba(42,58,51,0));
}

/* ============ 05 · 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5em;
  padding:.62em 1.05em;
  border:1px solid transparent;
  border-radius:2px;
  background:transparent;
  color:var(--paper);
  font-family:var(--sans);
  font-size:13px;
  font-weight:700;
  letter-spacing:.02em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn--lime{
  background:var(--lime);
  border-color:var(--lime);
  color:#08150F;
}
.btn--lime:hover{background:#DAFF72;border-color:#DAFF72;color:#08150F;transform:translateY(-1px)}
.btn--ghost{
  border-color:rgba(154,176,167,.4);
  color:rgba(244,241,232,.9);
}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime);background:rgba(200,255,61,.06)}

/* ============ 06 · 标签与数据大字 ============ */
.eyebrow{
  margin:0 0 12px;
  font-family:var(--mono);
  font-size:11px;
  font-weight:600;
  letter-spacing:.24em;
  color:var(--lime);
  text-transform:uppercase;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 9px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(20,58,46,.5);
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--mist);
  text-transform:uppercase;
  white-space:nowrap;
}
.tag::before{
  content:"";
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--lime);
  box-shadow:0 0 8px rgba(200,255,61,.8);
}
.tag--amber::before{background:var(--amber);box-shadow:0 0 8px rgba(255,181,71,.8)}
.figure{display:grid;gap:4px}
.figure__value{
  font-family:var(--mono);
  font-size:clamp(40px,9vw,96px);
  font-weight:600;
  line-height:.94;
  letter-spacing:-.04em;
  color:var(--lime);
}
.figure__label{
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.2em;
  color:var(--mist);
  text-transform:uppercase;
}

/* ============ 07 · 面包屑 ============ */
.breadcrumbs{margin:0 0 clamp(18px,3vw,30px)}
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mist);
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item::after{content:"/";color:rgba(154,176,167,.42)}
.breadcrumbs__item:last-child::after{content:"";display:none}
.breadcrumbs__link{color:var(--mist)}
.breadcrumbs__link:hover{color:var(--lime)}
.breadcrumbs__current{color:var(--paper)}

/* ============ 08 · 图片容器 ============ */
.img-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:3px;
  background:linear-gradient(155deg,var(--turf),#08160F 72%);
}
.img-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(244,241,232,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(244,241,232,.05) 1px,transparent 1px);
  background-size:64px 64px;
  opacity:.6;
}
.img-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.94) contrast(1.04)}
.img-frame--wide{aspect-ratio:16/9}
.img-frame--tall{aspect-ratio:4/5}
.img-frame--square{aspect-ratio:1/1}
.img-frame__label{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  margin:0;
  padding:7px 12px;
  background:rgba(7,18,15,.85);
  border-top:1px solid var(--line);
  border-right:1px solid var(--line);
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.16em;
  color:var(--lime);
  text-transform:uppercase;
}

/* ============ 09 · 筛选条 ============ */
.filter{
  display:flex;
  flex-wrap:wrap;
  gap:6px;
  margin:0 0 24px;
  padding:0;
}
.filter__btn{
  appearance:none;
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(20,58,46,.45);
  color:var(--mist);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.12em;
  text-transform:uppercase;
  cursor:pointer;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.filter__btn:hover{color:var(--paper);border-color:rgba(200,255,61,.5)}
.filter__btn[aria-pressed="true"]{
  background:var(--lime);
  border-color:var(--lime);
  color:#08150F;
  font-weight:700;
}
.filter__item{transition:opacity .22s var(--ease)}
.filter__item.is-hidden{display:none}

/* ============ 10 · 显现 ============ */
[data-reveal]{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
[data-reveal].is-in{opacity:1;transform:none}

/* ============ 11 · 头部命令栏 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  height:var(--header-h);
  background:rgba(7,18,15,.9);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.cmdbar{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  gap:16px;
  width:100%;
  max-width:var(--shell);
  height:100%;
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--paper);
  text-decoration:none;
}
.brand:hover{color:var(--paper)}
.brand__mark{
  position:relative;
  display:grid;
  place-items:center;
  width:26px;
  height:26px;
  border:1px solid rgba(200,255,61,.55);
  border-radius:2px;
  background:rgba(200,255,61,.06);
}
.brand__mark::before{
  content:"";
  width:10px;
  height:10px;
  border-radius:1px;
  background:var(--lime);
  box-shadow:0 0 14px rgba(200,255,61,.6);
}
.brand__text{display:flex;flex-direction:column;line-height:1.05}
.brand__name{
  font-size:15px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--paper);
  white-space:nowrap;
}
.brand__sub{
  margin-top:3px;
  font-family:var(--mono);
  font-size:9px;
  letter-spacing:.22em;
  color:var(--mist);
  text-transform:uppercase;
}
.utility-line{
  display:none;
  margin:0;
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.14em;
  color:var(--mist);
  white-space:nowrap;
}
.nav{margin-left:auto;min-width:0}
.nav__list{display:flex;align-items:center;gap:1px}
.nav__item{display:block}
.nav__link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:5px;
  padding:8px 10px;
  border-radius:2px;
  color:rgba(244,241,232,.74);
  font-size:13px;
  font-weight:600;
  letter-spacing:.01em;
  text-decoration:none;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.nav__text{white-space:nowrap}
.nav__index{
  font-family:var(--mono);
  font-size:9.5px;
  letter-spacing:.02em;
  color:rgba(154,176,167,.75);
  transform:translateY(-3px);
  transition:color .2s var(--ease);
}
.nav__link::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:2px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .22s var(--ease);
}
.nav__link:hover{color:var(--paper);background:rgba(20,58,46,.55)}
.nav__link:hover .nav__index{color:var(--lime)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--lime)}
.nav__link[aria-current="page"] .nav__index{color:var(--lime)}
.nav__link[aria-current="page"]::after{transform:scaleX(1)}
.header-actions{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  margin-left:10px;
}
.header-actions .btn{padding:.52em .9em}
.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 11px;
  border:1px solid rgba(154,176,167,.35);
  border-radius:2px;
  background:rgba(20,58,46,.45);
  color:var(--paper);
  font-size:12px;
  font-weight:700;
  letter-spacing:.06em;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__label{white-space:nowrap}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:14px;
  height:9px;
}
.nav-toggle__bar{
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle__bar:first-child{top:0}
.nav-toggle__bar:last-child{bottom:0}
.site-header[data-open="true"] .nav-toggle__bar:first-child{transform:translateY(3.75px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bar:last-child{transform:translateY(-3.75px) rotate(-45deg)}
.progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:1;
  height:2px;
  background:rgba(42,58,51,.75);
  pointer-events:none;
}
.progress__bar{
  display:block;
  width:100%;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--lime));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .08s linear;
}

/* ============ 12 · 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:clamp(56px,9vw,112px);
  overflow:hidden;
  background:linear-gradient(180deg,var(--ink) 0%,#06100D 58%,#050C0A 100%);
  border-top:1px solid var(--line);
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(42,58,51,.6) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(42,58,51,.4) 1px,transparent 1px);
  background-size:96px 100%,100% 64px;
  -webkit-mask-image:linear-gradient(to bottom,rgba(0,0,0,.62),transparent 70%);
  mask-image:linear-gradient(to bottom,rgba(0,0,0,.62),transparent 70%);
  opacity:.55;
}
.site-footer::after{
  content:"";
  position:absolute;
  top:0;
  left:0;
  width:min(38vw,420px);
  height:2px;
  background:linear-gradient(90deg,var(--lime),rgba(200,255,61,0));
}
.footer__inner{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(44px,6vw,84px) var(--gutter) 30px;
}
.footer__top{
  display:grid;
  gap:clamp(28px,4vw,48px);
  grid-template-columns:1fr;
}
.footer__brand{min-width:0}
.footer__logo{
  display:inline-flex;
  align-items:baseline;
  gap:2px;
  color:var(--paper);
  font-size:23px;
  font-weight:900;
  letter-spacing:-.03em;
  text-decoration:none;
}
.footer__logo span{color:var(--lime)}
.footer__logo:hover{color:var(--paper)}
.footer__summary{
  margin:14px 0 0;
  max-width:40ch;
  font-size:14.5px;
  line-height:1.85;
  color:var(--mist);
}
.footer__tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin:18px 0 0;
  font-family:var(--mono);
  font-size:10px;
  letter-spacing:.2em;
  color:var(--lime);
  text-transform:uppercase;
}
.footer__tag::before{content:"";width:22px;height:1px;background:var(--lime)}
.footer__col{display:flex;flex-direction:column;min-width:0}
.footer__title{
  margin:0 0 14px;
  font-family:var(--mono);
  font-size:10.5px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--mist);
  text-transform:uppercase;
}
.footer__links{display:grid;gap:2px}
.footer__link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:5px 0;
  color:rgba(244,241,232,.78);
  font-size:14.5px;
  text-decoration:none;
  transition:color .18s var(--ease);
}
.footer__link::before{
  content:"";
  width:0;
  height:1px;
  background:var(--lime);
  transition:width .18s var(--ease);
}
.footer__link:hover{color:var(--lime)}
.footer__link:hover::before{width:12px}
.footer__col--contact{min-width:0}
.footer__contact{display:grid;gap:12px}
.footer__contact li{display:grid;gap:2px;min-width:0}
.contact__label{
  font-family:var(--mono);
  font-size:9.5px;
  letter-spacing:.2em;
  color:var(--mist);
  text-transform:uppercase;
}
.contact__value{
  font-size:14px;
  line-height:1.6;
  color:rgba(244,241,232,.9);
  overflow-wrap:anywhere;
}
.footer__meta{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 22px;
  margin-top:clamp(34px,5vw,58px);
  padding-top:20px;
  border-top:1px solid var(--line);
  font-family:var(--mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
}
.footer__icp,.footer__copy{margin:0}
.to-top{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 12px;
  border:1px solid var(--line);
  border-radius:2px;
  background:transparent;
  color:var(--paper);
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.1em;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.to-top:hover{border-color:var(--lime);color:var(--lime);background:rgba(200,255,61,.06)}
.to-top__arrow{font-size:12px;line-height:1}
.footer__note{
  margin:18px 0 0;
  max-width:74ch;
  font-size:12.5px;
  line-height:1.9;
  color:rgba(154,176,167,.85);
}

/* ============ 13 · 断点与动效降级 ============ */
@media (min-width:1180px){
  .utility-line{display:block}
}
@media (min-width:760px){
  .footer__top{grid-template-columns:1.5fr 1fr 1fr}
}
@media (min-width:1040px){
  .footer__top{grid-template-columns:1.65fr .8fr .8fr 1.15fr}
}
@media (min-width:900px) and (max-width:1099px){
  .nav__link{padding:8px 7px;font-size:12.5px}
  .nav__index{display:none}
  .header-actions .btn--ghost{display:none}
}
@media (max-width:899px){
  .nav{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    z-index:99;
    margin:0;
    padding:10px var(--gutter) 24px;
    border-bottom:1px solid var(--line);
    background:rgba(14,42,34,.985);
    box-shadow:0 30px 60px rgba(0,0,0,.55);
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .site-header[data-open="true"] .nav{
    opacity:1;
    visibility:visible;
    transform:none;
  }
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__link{
    display:flex;
    justify-content:flex-start;
    padding:14px 6px;
    font-size:16px;
    border-radius:0;
    border-bottom:1px solid rgba(42,58,51,.65);
  }
  .nav__index{display:inline-block;transform:none;font-size:11px}
  .nav__link::after{display:none}
  .nav__link[aria-current="page"]{background:rgba(200,255,61,.08)}
  .header-actions{margin-left:auto;margin-right:4px}
  .header-actions .btn--ghost{display:none}
  .nav-toggle{display:inline-flex}
}
@media (max-width:599px){
  body{font-size:16.5px}
  .header-actions .btn--lime{padding:.5em .7em;font-size:12px}
  .brand__name{font-size:14px}
  .footer__meta{font-size:11px}
  .to-top{margin-left:0}
}
@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}
}