:root{
  --ink:#0B241C;
  --coal:#101513;
  --rock:#7E857C;
  --moss:#385545;
  --paper:#F2EFE4;
  --lime:#C7FF3F;
  --orange:#FF6B35;
  --sand:#C9A45C;
  --clay:#B5654A;
  --steel:#2B3A36;

  --line:rgba(126,133,124,.3);
  --line-soft:rgba(126,133,124,.15);

  --font-head:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:-apple-system,system-ui,"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Menlo,Consolas,monospace;

  --gut:clamp(16px,3.2vw,44px);
  --shell:1440px;
  --content:1240px;
  --hdr-h:68px;
  --r:2px;
}

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

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--hdr-h) + 18px);
}

body{
  margin:0;
  min-height:100vh;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(126,133,124,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(126,133,124,.055) 1px,transparent 1px),
    radial-gradient(120% 70% at 84% -10%,rgba(56,85,69,.55) 0%,rgba(11,36,28,0) 62%);
  background-size:88px 88px,88px 88px,100% 100%;
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}

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

::selection{background:var(--lime);color:var(--ink)}

:focus-visible{
  outline:2px solid var(--lime);
  outline-offset:3px;
}

h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:800;
  letter-spacing:-.03em;
  line-height:1.1;
  color:var(--paper);
  text-wrap:balance;
}
h1{font-size:clamp(32px,5.2vw,62px);font-weight:900;letter-spacing:-.045em;line-height:1.04}
h2{font-size:clamp(24px,3vw,36px)}
h3{font-size:clamp(18px,1.9vw,22px);line-height:1.34;letter-spacing:-.02em}
h4{font-size:16px;line-height:1.45;letter-spacing:0;font-weight:700}

a{color:var(--lime);text-decoration:none;transition:color .18s ease}
a:hover{color:#DAFF7A}

p{text-wrap:pretty}

/* ---------- 布局原语 ---------- */
.wrap{
  width:100%;
  max-width:var(--content);
  margin-inline:auto;
  padding-inline:var(--gut);
}
.wrap--wide{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gut);
}

.grid{display:grid;gap:clamp(16px,2vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}

.rule{
  height:1px;
  border:0;
  margin:clamp(24px,4vw,48px) 0;
  background:var(--line);
}

/* ---------- 排版组件 ---------- */
.prose{
  max-width:36em;
  color:rgba(242,239,228,.82);
  line-height:1.8;
}
.prose p + p{margin-top:1.1em}
.prose h2,.prose h3{margin-top:1.8em;margin-bottom:.6em}
.prose ul{list-style:square;padding-left:1.25em}
.prose ol{list-style:decimal;padding-left:1.4em}
.prose li + li{margin-top:.4em}
.prose strong{color:var(--paper);font-weight:700}
.prose a{border-bottom:1px solid rgba(199,255,63,.45)}
.prose a:hover{border-bottom-color:var(--lime)}

.lede{
  max-width:34em;
  font-size:clamp(17px,1.5vw,20px);
  line-height:1.72;
  color:rgba(242,239,228,.8);
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.65em;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--rock);
}
.eyebrow::before{
  content:"";
  width:18px;
  height:1px;
  background:var(--lime);
  flex:0 0 auto;
}

.section-no{
  display:block;
  font-family:var(--font-mono);
  font-size:clamp(30px,4.4vw,52px);
  font-weight:700;
  line-height:1;
  letter-spacing:-.03em;
  color:var(--lime);
}

.crumb{display:block}
.crumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--rock);
}
.crumb li{display:flex;align-items:center;gap:.5em}
.crumb li + li::before{content:"/";color:var(--steel)}
.crumb a{color:var(--rock);border-bottom:1px solid transparent}
.crumb a:hover{color:var(--lime);border-bottom-color:rgba(199,255,63,.5)}
.crumb [aria-current="page"]{color:var(--paper)}

.tag{
  display:inline-block;
  padding:2px 8px;
  border:1px solid rgba(126,133,124,.5);
  border-radius:var(--r);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--rock);
  background:rgba(43,58,54,.35);
}
.tag--lime{color:var(--lime);border-color:rgba(199,255,63,.45);background:rgba(199,255,63,.08)}
.tag--sand{color:var(--sand);border-color:rgba(201,164,92,.5);background:rgba(201,164,92,.08)}
.tag--clay{color:#E7B4A2;border-color:rgba(181,101,74,.6);background:rgba(181,101,74,.16)}

/* ---------- 按钮 ---------- */
.btn{
  --btn-bg:transparent;
  --btn-fg:var(--paper);
  --btn-bd:rgba(126,133,124,.5);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  min-height:44px;
  padding:11px 20px;
  background:var(--btn-bg);
  color:var(--btn-fg);
  border:1px solid var(--btn-bd);
  border-radius:var(--r);
  font-family:var(--font-body);
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  text-decoration:none;
  white-space:nowrap;
  cursor:pointer;
  transition:background-color .2s ease,color .2s ease,border-color .2s ease,transform .2s ease;
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--accent{--btn-bg:var(--orange);--btn-fg:#171008;--btn-bd:var(--orange)}
.btn--accent:hover{--btn-bg:#FF8154;--btn-bd:#FF8154;--btn-fg:#171008}
.btn--lime{--btn-bg:var(--lime);--btn-fg:#0B241C;--btn-bd:var(--lime)}
.btn--lime:hover{--btn-bg:#D8FF79;--btn-bd:#D8FF79;--btn-fg:#0B241C}
.btn--gold{--btn-fg:var(--sand);--btn-bd:rgba(201,164,92,.6)}
.btn--gold:hover{--btn-bg:rgba(201,164,92,.14);--btn-fg:#E5C892;--btn-bd:var(--sand)}
.btn--ghost{--btn-fg:var(--paper);--btn-bd:rgba(126,133,124,.5)}
.btn--ghost:hover{--btn-fg:var(--lime);--btn-bd:var(--lime);--btn-bg:rgba(199,255,63,.07)}
.btn--sm{min-height:36px;padding:7px 14px;font-size:13px}
.btn--block{display:flex;width:100%}

/* ---------- 图片容器 ---------- */
.figure{
  position:relative;
  margin:0;
  overflow:hidden;
  background:var(--steel);
  border:1px solid var(--line-soft);
}
.figure__media{
  position:relative;
  width:100%;
  aspect-ratio:16/9;
  overflow:hidden;
  background-image:
    repeating-linear-gradient(115deg,rgba(199,255,63,.075) 0 1px,transparent 1px 16px),
    linear-gradient(152deg,var(--moss),var(--ink) 72%);
}
.figure__media img,
.figure__media picture,
.figure__media video{width:100%;height:100%;object-fit:cover}
.figure__media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(11,36,28,0) 46%,rgba(11,36,28,.58) 100%);
}
.figure--wide .figure__media{aspect-ratio:21/9}
.figure--tall .figure__media{aspect-ratio:3/4}
.figure--square .figure__media{aspect-ratio:1/1}
.figure__cap{
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--rock);
}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  color:var(--paper);
  background:linear-gradient(180deg,rgba(16,21,19,.98) 0%,rgba(11,36,28,.95) 100%);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(10px);
  transition:box-shadow .24s ease;
}
.site-header.is-stuck{box-shadow:0 18px 36px -28px rgba(0,0,0,.92)}

.skip{
  position:absolute;
  left:12px;
  top:-72px;
  z-index:200;
  padding:10px 16px;
  background:var(--lime);
  color:#0B241C;
  font-size:14px;
  font-weight:700;
  border-radius:var(--r);
  transition:top .18s ease;
}
.skip:focus{top:10px;color:#0B241C}

.hdr__inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(14px,2.2vw,34px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:8px var(--gut);
  min-height:var(--hdr-h);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--paper);
  text-decoration:none;
}
.brand__mark{
  position:relative;
  display:block;
  width:22px;
  height:22px;
  background:var(--lime);
  clip-path:polygon(0 0,100% 0,100% 60%,60% 100%,0 100%);
  transition:transform .25s ease;
}
.brand:hover .brand__mark{transform:translateY(-2px)}
.brand:hover{color:var(--paper)}
.brand__text{display:flex;flex-direction:column;line-height:1}
.brand__cn{
  font-family:var(--font-head);
  font-size:18px;
  font-weight:900;
  letter-spacing:.02em;
  color:var(--paper);
}
.brand__en{
  margin-top:4px;
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.34em;
  color:var(--rock);
}

.hdr__nav{margin-left:clamp(2px,.8vw,16px)}
.hdr__nav ul{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.7vw,26px);
}
.hdr__nav li{position:relative}
.hdr__nav a{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  color:rgba(242,239,228,.82);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  white-space:nowrap;
}
.hdr__nav a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:2px;
  background:var(--lime);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .24s cubic-bezier(.2,.7,.3,1);
}
.hdr__nav a:hover{color:var(--paper)}
.hdr__nav a:hover::after,
.hdr__nav a:focus-visible::after{transform:scaleX(1)}
.hdr__nav a[aria-current="page"]{color:var(--lime)}
.hdr__nav a[aria-current="page"]::after{transform:scaleX(1);background:var(--lime)}

.hdr__tools{
  display:flex;
  align-items:center;
  gap:clamp(8px,1.2vw,18px);
  margin-left:auto;
  padding-left:clamp(10px,1.6vw,22px);
  border-left:1px solid var(--line);
}
.hdr__tools .tool{
  padding:6px 0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(242,239,228,.72);
  border-bottom:1px solid transparent;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease;
}
.hdr__tools .tool:hover{color:var(--lime);border-bottom-color:var(--lime)}
.hdr__tools .tool--gold{color:var(--sand)}
.hdr__tools .tool--gold:hover{color:#E5C892;border-bottom-color:var(--sand)}

.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  width:44px;
  height:38px;
  border:1px solid rgba(126,133,124,.45);
  border-radius:var(--r);
  color:var(--paper);
  cursor:pointer;
  transition:border-color .2s ease,background-color .2s ease;
}
.nav-toggle:hover{border-color:var(--lime);background:rgba(199,255,63,.08)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:18px;
  height:2px;
  background:currentColor;
  transition:background-color .2s ease;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  background:currentColor;
  transition:transform .22s ease,top .22s ease;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.site-header[data-open] .nav-toggle__bars{background:transparent}
.site-header[data-open] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}

.hdr__progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  overflow:hidden;
  pointer-events:none;
}
.hdr__progress > span{
  display:block;
  height:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--lime) 0%,var(--orange) 100%);
  will-change:transform;
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  background:var(--coal);
  border-top:1px solid var(--line);
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-1px;
  left:0;
  width:clamp(72px,16%,220px);
  height:2px;
  background:linear-gradient(90deg,var(--lime),var(--orange));
}

.ft__top{
  display:grid;
  grid-template-columns:minmax(0,1.8fr) minmax(0,.8fr) minmax(0,1fr) minmax(0,1.2fr);
  gap:clamp(24px,3.6vw,60px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(40px,5.6vw,72px) var(--gut) clamp(28px,4vw,48px);
}

.ft__brand .brand{margin-bottom:18px}
.brand--ft .brand__cn{font-size:20px}
.brand--ft .brand__mark{width:26px;height:26px}

.ft__note{
  max-width:30em;
  font-size:14px;
  line-height:1.8;
  color:rgba(242,239,228,.66);
}

.ft__legend{
  display:flex;
  flex-wrap:wrap;
  gap:8px 18px;
  margin-top:20px;
}
.ft__legend-item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--rock);
}
.dot{
  display:inline-block;
  flex:0 0 auto;
  width:7px;
  height:7px;
  border-radius:50%;
}
.dot--lime{background:var(--lime)}
.dot--sand{background:var(--sand)}
.dot--orange{background:var(--orange)}

.ft__title{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:16px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--rock);
}
.ft__title::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--lime);
  flex:0 0 auto;
}

.ft__col ul{display:grid;gap:9px}
.ft__col a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:2px 0;
  font-size:14px;
  color:rgba(242,239,228,.74);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease,transform .2s ease;
}
.ft__col a:hover{
  color:var(--lime);
  border-bottom-color:rgba(199,255,63,.5);
  transform:translateX(3px);
}

.ft__contact{display:grid;gap:10px}
.copy{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:2px 0;
  font-family:var(--font-mono);
  font-size:13px;
  text-align:left;
  color:var(--paper);
  border-bottom:1px dashed rgba(126,133,124,.6);
  cursor:pointer;
  transition:color .2s ease,border-color .2s ease;
}
.copy::after{
  content:"复制";
  font-size:10px;
  letter-spacing:.1em;
  color:var(--rock);
  opacity:0;
  transition:opacity .2s ease;
}
.copy:hover{color:var(--lime);border-bottom-color:var(--lime)}
.copy:hover::after{opacity:1}
.copy[data-copied="ok"]{color:var(--lime);border-bottom-color:var(--lime)}
.copy[data-copied="ok"]::after{content:"已复制";opacity:1;color:var(--lime)}
.copy[data-copied="fail"]{color:var(--clay);border-bottom-color:var(--clay)}
.copy[data-copied="fail"]::after{content:"请手动选择";opacity:1;color:var(--clay)}

.ft__addr{
  display:block;
  font-size:13px;
  line-height:1.8;
  color:var(--rock);
}

.ft__icp{
  margin-top:16px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--sand);
}

.ft__bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 28px;
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:18px var(--gut) 26px;
  border-top:1px solid rgba(126,133,124,.22);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--rock);
}
.ft__copy{color:var(--rock)}
.ft__legal{display:flex;flex-wrap:wrap;gap:18px}
.ft__legal a{
  color:var(--rock);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.ft__legal a:hover{color:var(--lime);border-bottom-color:rgba(199,255,63,.5)}
.ft__coord{margin-left:auto;color:var(--rock)}

/* ---------- 响应式 ---------- */
@media (max-width:1180px){
  .hdr__nav ul{gap:16px}
  .hdr__nav a{font-size:13px}
  .hdr__tools{gap:10px;padding-left:12px}
  .hdr__tools .tool{font-size:11px}
}

@media (max-width:1080px){
  .ft__top{grid-template-columns:repeat(2,minmax(0,1fr));gap:36px 32px}
  .ft__brand{grid-column:1 / -1}
}

@media (max-width:980px){
  html{scroll-padding-top:120px}

  .hdr__inner{flex-wrap:wrap;gap:0;padding-block:10px;min-height:0}
  .brand{order:1}
  .brand__cn{font-size:17px}
  .nav-toggle{order:2;display:inline-flex;margin-left:auto}
  .hdr__nav{order:3;display:none;width:100%;margin:0}
  .hdr__tools{
    order:4;
    display:none;
    width:100%;
    margin:0;
    padding:0;
    border-left:0;
  }

  .site-header[data-open] .hdr__nav{
    display:block;
    margin-top:10px;
    padding-top:6px;
    padding-bottom:4px;
    border-top:1px solid var(--line);
  }
  .site-header[data-open] .hdr__nav ul{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-header[data-open] .hdr__nav li{
    border-bottom:1px solid var(--line-soft);
  }
  .site-header[data-open] .hdr__nav a{
    display:block;
    padding:13px 2px;
    font-size:15px;
  }
  .site-header[data-open] .hdr__nav a::after{display:none}
  .site-header[data-open] .hdr__nav a[aria-current="page"]{
    color:var(--lime);
    box-shadow:inset 3px 0 0 var(--lime);
    padding-left:12px;
  }
  .site-header[data-open] .hdr__tools{
    display:flex;
    flex-wrap:wrap;
    align-items:center;
    gap:12px 18px;
    padding:16px 0 10px;
    border-top:1px solid var(--line-soft);
  }
  .site-header[data-open] .hdr__tools .tool{font-size:12px}

  .site-header[data-open] .hdr__nav li{
    animation:navItemIn .26s ease both;
  }
  .site-header[data-open] .hdr__nav li:nth-child(2){animation-delay:.03s}
  .site-header[data-open] .hdr__nav li:nth-child(3){animation-delay:.06s}
  .site-header[data-open] .hdr__nav li:nth-child(4){animation-delay:.09s}
  .site-header[data-open] .hdr__nav li:nth-child(5){animation-delay:.12s}
  .site-header[data-open] .hdr__nav li:nth-child(6){animation-delay:.15s}
}

@keyframes navItemIn{
  from{opacity:0;transform:translateY(-5px)}
  to{opacity:1;transform:none}
}

@media (max-width:820px){
  .grid--2,.grid--3{grid-template-columns:1fr}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

@media (max-width:620px){
  .ft__top{grid-template-columns:1fr;gap:32px}
  .ft__bar{flex-direction:column;align-items:flex-start;gap:10px}
  .ft__coord{margin-left:0}
  .btn{width:auto}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,.ft__col a:hover{transform:none}
}