:root{
  --ink:#051913;
  --panel:#0B2A22;
  --line:#154239;
  --gold:#C8A24C;
  --gold-hi:#F2D98C;
  --cyan:#3FEBD0;
  --coral:#FF6B4A;
  --text:#F1F6F3;
  --muted:#9BB3AA;
  --glow:#0E3B4A;
  --rail-w:264px;
  --step:clamp(72px,9vw,140px);
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --shadow-hard:8px 8px 0 rgba(0,0,0,.40);
  --shadow-hard-sm:4px 4px 0 rgba(0,0,0,.40);
}

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

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

body{
  margin:0;
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 620px at 88% -8%, rgba(14,59,74,.78), transparent 70%),
    radial-gradient(720px 520px at -12% 106%, rgba(200,162,76,.16), transparent 70%);
  background-repeat:no-repeat;
  background-attachment:fixed;
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.85;
  font-weight:400;
  letter-spacing:.006em;
  min-height:100vh;
}

body.nav-open{overflow:hidden}

h1,h2,h3,h4{margin:0 0 .55em;font-weight:900;line-height:1.14;letter-spacing:-.02em;color:var(--text)}
h1{font-size:clamp(2.6rem,7vw,5.6rem);text-shadow:0 0 24px rgba(200,162,76,.34)}
h2{font-size:clamp(1.85rem,4.2vw,2.9rem);text-shadow:0 0 18px rgba(200,162,76,.16)}
h3{font-size:clamp(1.2rem,2.2vw,1.6rem);text-shadow:none}
h4{font-size:1.05rem}

p{margin:0 0 1.15em;max-width:68ch}
strong{color:var(--gold-hi);font-weight:700}
small{font-size:13px;color:var(--muted)}
ul,ol{padding-left:1.15em}
li{margin-bottom:.4em}
code,kbd,samp{font-family:var(--font-mono);font-size:.92em;color:var(--cyan)}
hr{border:0;border-top:2px solid var(--line);margin:var(--step) 0}

a{color:var(--cyan);text-decoration:none;transition:color .2s ease-out}
a:hover{color:var(--gold-hi)}
img,svg,picture,video{max-width:100%}

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

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

/* ============ 跳转链接 ============ */
.skip-link{
  position:fixed;left:12px;top:-90px;z-index:200;
  padding:12px 18px;
  background:var(--gold);
  color:#05130F;
  font-weight:900;
  font-size:14px;
  letter-spacing:.04em;
  border:2px solid var(--gold-hi);
  transition:top .2s ease-out;
}
.skip-link:focus{top:12px;color:#05130F}

/* ============ 头部 · 移动优先（粘顶栏 + 底部抽屉） ============ */
.site-header{
  position:sticky;top:0;z-index:90;
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:12px clamp(16px,4vw,22px);
  background:rgba(5,25,19,.94);
  border-bottom:2px solid var(--line);
  backdrop-filter:blur(10px);
}

.rail-top{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%}

.brand-mark{display:flex;align-items:center;gap:11px;text-decoration:none;color:var(--text)}
.brand-mark:hover{color:var(--text)}
.brand-mark:hover .brand-name{color:var(--gold-hi)}

.brand-glyph{
  display:grid;place-items:center;
  width:42px;height:42px;flex:0 0 42px;
  background:linear-gradient(140deg,var(--gold-hi),var(--gold) 55%,#8B6A25);
  color:#04120E;
  font-size:20px;font-weight:900;line-height:1;
  border:2px solid var(--gold-hi);
  clip-path:polygon(0 0,100% 0,100% 76%,76% 100%,0 100%);
}

.brand-text{display:flex;flex-direction:column;gap:1px}
.brand-name{font-size:18px;font-weight:900;letter-spacing:.01em;color:var(--text)}
.brand-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}

.nav-toggle{
  position:fixed;right:16px;bottom:16px;z-index:120;
  display:inline-flex;align-items:center;gap:10px;
  padding:12px 15px;
  border:2px solid var(--gold);
  background:rgba(11,42,34,.96);
  color:var(--gold-hi);
  font-family:var(--font-body);font-size:14px;font-weight:700;letter-spacing:.08em;
  cursor:pointer;
  box-shadow:var(--shadow-hard-sm);
  transition:border-color .24s ease-out, transform .24s ease-out;
}
.nav-toggle:hover{border-color:var(--cyan);transform:translateY(-2px)}
.nav-toggle-lines{display:inline-flex;flex-direction:column;gap:5px;width:18px}
.nav-toggle-lines span{display:block;height:2px;background:var(--cyan);transition:transform .24s ease-out,background-color .24s ease-out}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:first-child{transform:translateY(3.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle-lines span:last-child{transform:translateY(-3.5px) rotate(-45deg)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan)}
.nav-toggle-label{white-space:nowrap}

.site-nav{
  position:fixed;inset:0;z-index:88;
  display:flex;flex-direction:column;gap:22px;
  padding:92px clamp(20px,6vw,42px) 130px;
  background:linear-gradient(170deg, rgba(11,42,34,.99), rgba(5,25,19,.995));
  border-top:2px solid var(--gold);
  overflow-y:auto;
  transform:translateY(100%);
  visibility:hidden;
  transition:transform .28s ease-out, visibility .28s linear;
}
.site-nav[data-open]{transform:translateY(0);visibility:visible}

.nav-kicker{
  display:flex;align-items:center;gap:12px;
  margin:0;font-family:var(--font-mono);font-size:11px;
  letter-spacing:.26em;text-transform:uppercase;color:var(--muted);
}
.nav-kicker::after{content:"";flex:1;height:2px;background:linear-gradient(90deg,var(--line),transparent)}

.nav-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.nav-item{margin:0}

.nav-link{
  position:relative;
  display:grid;grid-template-columns:auto 1fr;gap:14px;align-items:baseline;
  padding:11px 14px;
  border:2px solid transparent;
  color:var(--muted);
  font-size:clamp(20px,5.6vw,28px);
  font-weight:900;
  letter-spacing:-.01em;
  text-decoration:none;
  transition:color .2s ease-out,border-color .24s ease-out,background-color .24s ease-out,transform .24s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease-out;
}
.nav-link:hover{color:var(--text);border-color:var(--cyan);background:rgba(63,235,208,.07);transform:translateX(3px)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{
  color:var(--gold-hi);
  border-color:var(--gold);
  background:linear-gradient(90deg, rgba(200,162,76,.18), rgba(200,162,76,0));
}
.nav-link.is-active{border-color:var(--line);color:var(--text)}
.nav-link.is-active .nav-num{color:var(--cyan);opacity:1}

.nav-num{font-family:var(--font-mono);font-size:.56em;line-height:1;color:var(--gold);opacity:.72}
.nav-label{display:block}

.nav-actions{
  margin-top:auto;
  display:grid;gap:10px;
  padding-top:22px;
  border-top:2px solid var(--line);
}
.nav-actions .btn{font-size:16px;padding:14px 18px}

.rail-status{
  display:flex;align-items:center;gap:9px;
  margin:0;font-family:var(--font-mono);font-size:12px;color:var(--muted);
}

.pulse-dot{
  width:8px;height:8px;flex:0 0 8px;border-radius:50%;
  background:var(--cyan);
  animation:pulse 2.4s ease-out infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(63,235,208,.55)}
  70%{box-shadow:0 0 0 10px rgba(63,235,208,0)}
  100%{box-shadow:0 0 0 0 rgba(63,235,208,0)}
}

/* ============ 滚动进度（脚本注入） ============ */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;z-index:130;
  height:3px;
  background:rgba(21,66,57,.65);
  pointer-events:none;
}
.scroll-progress span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--gold-hi))}

/* ============ 通用容器与版式 ============ */
.wrap{width:100%;max-width:1140px;margin-inline:auto;padding-inline:clamp(20px,4vw,32px)}
.wrap-narrow{max-width:780px}
.page-main{display:block;padding:clamp(40px,6vw,84px) 0 var(--step)}
.section{position:relative;margin-bottom:var(--step)}
.section-head{display:grid;gap:12px;margin-bottom:clamp(22px,3vw,34px)}

.eyebrow{
  display:flex;align-items:center;gap:10px;
  margin:0;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.24em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--cyan)}
.lede{font-size:clamp(17px,1.6vw,19px);line-height:1.8;color:var(--muted);max-width:62ch}

.chapter{display:grid;gap:10px;margin-bottom:clamp(24px,3vw,36px)}
.chapter-num{font-family:var(--font-mono);font-size:clamp(2.2rem,6vw,3.6rem);line-height:.9;color:var(--gold);letter-spacing:-.03em}
.chapter-title{margin:0;font-size:clamp(1.7rem,3.6vw,2.6rem)}
.chapter-rule{height:2px;background:linear-gradient(90deg,var(--gold),rgba(200,162,76,0))}

/* ============ 网格 ============ */
.grid{display:grid;gap:clamp(18px,2.4vw,28px)}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
.stack{display:grid;gap:16px}
.cluster{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 18px;
  border:2px solid var(--line);
  background:var(--panel);
  color:var(--text);
  font-family:var(--font-body);font-size:15px;font-weight:700;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .24s ease-out,border-color .24s ease-out,color .24s ease-out;
}
.btn:hover{text-decoration:none}
.btn:active{transform:translate(1px,1px)}

.btn-gold{
  background:var(--gold);color:#04140F;border-color:var(--gold-hi);
  box-shadow:var(--shadow-hard-sm);
}
.btn-gold:hover{background:var(--gold-hi);color:#04140F;border-color:var(--gold-hi);transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(0,0,0,.48)}

.btn-ghost{background:transparent;color:var(--cyan);border-color:var(--line)}
.btn-ghost:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(63,235,208,.08)}

.btn-quiet{background:transparent;color:var(--muted);border-color:transparent;padding-inline:10px}
.btn-quiet:hover{color:var(--gold-hi)}

.btn-block{display:flex;width:100%}

/* ============ 卡片与面板 ============ */
.card{
  position:relative;
  background:var(--panel);
  border:2px solid var(--line);
  padding:clamp(20px,3vw,30px);
  box-shadow:var(--shadow-hard);
  transition:border-color .24s ease-out,transform .24s ease-out,box-shadow .24s ease-out;
}
.card:hover{border-color:var(--cyan);transform:translateY(-4px);box-shadow:var(--shadow-hard), 0 0 0 1px rgba(63,235,208,.25)}
.card-shear{clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);box-shadow:none}
.card-gold{border-color:var(--gold);background:linear-gradient(150deg, rgba(200,162,76,.18), var(--panel) 62%)}
.card-title{margin:0 0 8px;font-size:clamp(1.08rem,1.8vw,1.28rem);letter-spacing:-.01em}
.card-meta{margin:0;font-family:var(--font-mono);font-size:12px;color:var(--muted)}

.status-panel{display:grid;gap:1px;background:var(--line);border:2px solid var(--line)}
.stat{background:var(--panel);padding:18px 20px}
.stat-value{margin:0;font-family:var(--font-mono);font-size:clamp(1.5rem,3vw,2.1rem);line-height:1.2;color:var(--gold-hi)}
.stat-label{margin:0;font-size:13px;color:var(--muted)}

/* ============ 标签 ============ */
.tag{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 10px;
  border:2px solid var(--line);
  background:rgba(11,42,34,.72);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted);
}
.tag-cyan{border-color:rgba(63,235,208,.55);color:var(--cyan)}
.tag-gold{border-color:rgba(200,162,76,.60);color:var(--gold-hi)}
.tag-alert{border-color:rgba(255,107,74,.60);color:var(--coral)}

/* ============ 时间线 ============ */
.timeline{list-style:none;margin:0;padding:0 0 0 26px;border-left:2px solid var(--line)}
.timeline-item{position:relative;padding:0 0 28px 0;margin:0}
.timeline-item::before{
  content:"";position:absolute;left:-34px;top:8px;
  width:12px;height:12px;background:var(--panel);border:2px solid var(--gold);
}
.timeline-item:last-child{padding-bottom:0}
.timeline-time{display:block;margin-bottom:6px;font-family:var(--font-mono);font-size:12px;color:var(--cyan)}
.timeline-title{margin:0 0 6px;font-size:1.05rem}
.timeline-body{margin:0;font-size:15px;color:var(--muted)}

/* ============ 折叠内容组 ============ */
.disclosure{border:2px solid var(--line);background:var(--panel)}
.disclosure + .disclosure{margin-top:12px}
.disclosure summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:16px 20px;
  cursor:pointer;font-weight:700;color:var(--text);
  list-style:none;
  transition:color .2s ease-out,border-color .24s ease-out;
}
.disclosure summary::-webkit-details-marker{display:none}
.disclosure summary::after{content:"＋";font-family:var(--font-mono);color:var(--cyan);transition:transform .24s ease-out}
.disclosure[open] summary{color:var(--gold-hi);border-bottom:2px solid var(--line)}
.disclosure[open] summary::after{content:"－";color:var(--gold-hi)}
.disclosure-body{padding:18px 20px;font-size:15.5px;color:var(--muted)}

/* ============ 图片容器（页面阶段复用） ============ */
.media{
  position:relative;overflow:hidden;
  border:2px solid var(--line);
  background:linear-gradient(150deg, var(--glow), var(--panel) 72%);
  box-shadow:var(--shadow-hard-sm);
}
.media > img,.media > picture,.media > svg{display:block;width:100%;height:100%;object-fit:cover}
.media--banner{aspect-ratio:21/9}
.media--wide{aspect-ratio:16/9}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--fill{min-height:220px}
.media-sheen::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:45%;
  background:linear-gradient(180deg,transparent,rgba(5,25,19,.86));
  pointer-events:none;
}
.media-note{
  position:absolute;left:12px;right:12px;bottom:12px;
  font-family:var(--font-mono);font-size:12px;color:var(--gold-hi);
}
.media-caption{margin:10px 0 0;font-family:var(--font-mono);font-size:12px;color:var(--muted)}

/* ============ 面包屑 ============ */
.breadcrumb{margin:0 0 28px}
.breadcrumb-list{
  display:flex;flex-wrap:wrap;align-items:center;
  margin:0;padding:0;list-style:none;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
}
.breadcrumb-item{margin:0;display:flex;align-items:center}
.breadcrumb-item + .breadcrumb-item::before{content:"／";padding:0 8px;color:var(--line)}
.breadcrumb-item[aria-current="page"]{color:var(--text)}
.breadcrumb-link{color:var(--muted)}
.breadcrumb-link:hover{color:var(--cyan)}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  margin-top:var(--step);
  padding:clamp(48px,7vw,88px) 0 28px;
  border-top:2px solid var(--line);
  background:linear-gradient(180deg, rgba(11,42,34,.58), rgba(5,25,19,.98));
}
.site-footer::before{
  content:"";position:absolute;top:-2px;left:0;right:0;height:2px;
  background:linear-gradient(90deg,transparent,var(--gold) 30%,var(--cyan) 70%,transparent);
}
.foot-inner{width:100%;max-width:1140px;margin-inline:auto;padding-inline:clamp(20px,4vw,32px)}

.foot-grid{display:grid;grid-template-columns:1fr;gap:36px}

.foot-brand{display:block}
.foot-brand-name{margin:0 0 4px;font-size:23px;font-weight:900;letter-spacing:-.01em;color:var(--gold-hi);max-width:none}
.foot-brand-tag{margin:0 0 16px;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--gold);max-width:none}
.foot-lede{margin:0 0 18px;max-width:36ch;font-size:15px;line-height:1.75;color:var(--muted)}
.foot-contact-line{
  margin:0 0 6px;max-width:none;
  font-family:var(--font-mono);font-size:13px;color:var(--text);
  word-break:break-word;
}
.foot-service{
  display:inline-block;margin:10px 0 0;max-width:none;
  padding:6px 10px;
  border:2px solid rgba(255,107,74,.55);
  font-family:var(--font-mono);font-size:12px;color:var(--coral);
}

.foot-col-title{
  margin:0 0 16px;padding-bottom:10px;
  border-bottom:2px solid var(--line);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
}
.foot-links{list-style:none;margin:0;padding:0;display:grid;gap:10px}
.foot-links li{margin:0}
.foot-links a{
  position:relative;display:inline-block;padding-bottom:2px;
  font-size:15px;color:var(--muted);text-decoration:none;
}
.foot-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .24s ease-out;
}
.foot-links a:hover{color:var(--text)}
.foot-links a:hover::after{transform:scaleX(1)}

.foot-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 28px;
  margin-top:clamp(32px,4vw,48px);
  padding-top:20px;
  border-top:2px solid var(--line);
}
.foot-meta,.foot-signoff{margin:0;max-width:none;font-family:var(--font-mono);font-size:12px;color:var(--muted)}
.foot-icp{color:var(--text);letter-spacing:.02em}
.foot-signoff{color:var(--gold)}

/* ============ 显现（脚本增强） ============ */
html.js [data-reveal]{opacity:0;transform:translateY(12px)}
html.js [data-reveal].is-revealed{
  opacity:1;transform:none;
  transition:opacity .5s ease-out,transform .5s ease-out;
}

/* ============ 断点 ============ */
@media (min-width:640px){
  .foot-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (min-width:860px){
  .grid-asym{grid-template-columns:repeat(3,minmax(0,1fr));align-items:start}
  .grid-asym > :nth-child(3n+2){transform:translateY(34px)}
}

@media (min-width:1024px){
  body{padding-left:var(--rail-w)}

  .site-header{
    position:fixed;top:0;left:0;bottom:0;width:var(--rail-w);
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    padding:30px 20px 26px;
    border-bottom:0;border-right:2px solid var(--line);
    background:linear-gradient(180deg, rgba(11,42,34,.97), rgba(5,25,19,.99));
    overflow-y:auto;
  }
  .site-header::after{
    content:"";position:absolute;top:0;bottom:0;right:-2px;width:2px;
    background:linear-gradient(180deg,var(--gold),transparent 62%);
    pointer-events:none;
  }

  .rail-top{width:auto}

  .nav-toggle{display:none}

  .site-nav{
    position:static;inset:auto;
    flex:1;
    margin-top:30px;
    padding:0;
    background:none;
    border-top:0;
    overflow:visible;
    transform:none;visibility:visible;
    gap:18px;
  }

  .nav-list{gap:4px}
  .nav-link{font-size:15px;font-weight:700;padding:10px 12px;gap:12px}
  .nav-link::after{left:12px;right:12px;bottom:5px}
  .nav-actions .btn{font-size:14px;padding:12px 16px}

  .scroll-progress{left:var(--rail-w)}

  .foot-grid{grid-template-columns:minmax(260px,1.6fr) repeat(3,minmax(140px,1fr));gap:40px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
  .pulse-dot{animation:none}
}