*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0}
h1,h2,h3,h4,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,picture,video{display:block;max-width:100%}
button{font:inherit;color:inherit}
a{color:inherit}

:root{
  --ink:#0B0F0C;
  --moss:#12332A;
  --field:#1E4D3F;
  --stone:#A8B2AC;
  --bone:#F2F0E6;
  --lime:#C6F24A;
  --clay:#E2603A;
  --frost:#7C93A8;
  --amber:#D9A23C;
  --glass:rgba(242,240,230,.12);
  --line:rgba(168,178,172,.22);
  --line-strong:rgba(168,178,172,.38);
  --rail-w:88px;
  --top-h:48px;
  --bar-h:56px;
  --gutter:24px;
  --maxw:1440px;
  --font-display:"Helvetica Neue","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --font-serif:Georgia,"Songti SC","Source Han Serif SC","SimSun",serif;
}

body{
  background:var(--ink);
  color:var(--bone);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.55;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:800;line-height:1.04;letter-spacing:-.02em}
h1{font-size:clamp(40px,7vw,96px)}
h2{font-size:clamp(28px,4vw,56px)}
h3{font-size:clamp(20px,2.4vw,28px);line-height:1.12}
strong{font-weight:700;color:var(--bone)}
::selection{background:var(--lime);color:var(--ink)}

:focus-visible{outline:2px solid var(--lime);outline-offset:3px}
a:focus:not(:focus-visible),button:focus:not(:focus-visible){outline:none}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:10px 16px;border-radius:2px;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.06em;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform 160ms ease;
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 阅读进度 ---------- */
.progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  background:rgba(168,178,172,.16);pointer-events:none;
}
.progress__fill{
  display:block;width:100%;height:100%;
  background:var(--lime);
  transform:scaleX(0);transform-origin:0 50%;
  will-change:transform;
}

/* ---------- 头部骨架 ---------- */
.site-header{position:relative;z-index:90}
.header__panel{position:relative}

/* 品牌轨道 */
.rail{
  position:fixed;top:0;bottom:0;left:0;width:var(--rail-w);z-index:60;
  display:flex;flex-direction:column;align-items:center;gap:18px;
  padding:18px 0 20px;
  background:var(--moss);
  border-right:1px solid var(--line-strong);
}
.rail__brand{
  display:flex;flex-direction:column;align-items:center;gap:10px;
  text-decoration:none;color:var(--bone);
}
.rail__mark{
  font-family:var(--font-display);font-weight:800;font-size:30px;line-height:1;
  color:var(--lime);letter-spacing:-.05em;
}
.rail__name{
  writing-mode:vertical-rl;
  font-size:13px;font-weight:600;letter-spacing:.34em;color:var(--bone);
}
.rail__tag{
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.42em;
  color:var(--stone);
}
.rail__state{
  margin-top:auto;
  display:flex;flex-direction:column;align-items:center;gap:8px;
}
.rail__dot{
  width:6px;height:6px;border-radius:50%;background:var(--lime);
  animation:railPulse 2.4s ease-out infinite;
}
@keyframes railPulse{
  0%{box-shadow:0 0 0 0 rgba(198,242,74,.55)}
  70%{box-shadow:0 0 0 8px rgba(198,242,74,0)}
  100%{box-shadow:0 0 0 0 rgba(198,242,74,0)}
}
.rail__index{
  font-family:var(--font-mono);font-size:22px;line-height:1;
  color:var(--lime);letter-spacing:.04em;
}
.rail__section{
  writing-mode:vertical-rl;
  font-size:11px;letter-spacing:.28em;color:var(--stone);
}

/* 玻璃快捷条 */
.glasstop{
  display:flex;align-items:center;gap:16px;
  min-height:var(--top-h);
  padding:0 20px;
  background:var(--glass);
  -webkit-backdrop-filter:blur(14px) saturate(130%);
  backdrop-filter:blur(14px) saturate(130%);
  border-bottom:1px solid var(--line);
}
.glasstop__label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--stone);white-space:nowrap;
}
.glasstop__actions{
  margin-left:auto;display:flex;align-items:center;gap:8px;
  overflow-x:auto;scrollbar-width:none;
}
.glasstop__actions::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;
  padding:6px 12px;border-radius:999px;
  border:1px solid var(--line-strong);
  font-size:11px;letter-spacing:.14em;
  color:var(--bone);text-decoration:none;white-space:nowrap;
  transition:background 120ms ease,color 120ms ease,border-color 120ms ease;
}
.chip:hover{background:var(--lime);border-color:var(--lime);color:var(--ink)}

/* 导航层 */
.header__bar{
  position:relative;
  display:flex;align-items:center;gap:16px;
  min-height:var(--bar-h);
  padding:0 16px 0 20px;
  background:var(--ink);
  border-bottom:1px solid var(--line-strong);
}
.header__bar::after{
  content:"";position:absolute;left:0;bottom:-1px;
  width:96px;height:2px;background:var(--lime);
}
.bar__brand{
  display:none;
  font-family:var(--font-display);font-weight:800;font-size:16px;
  letter-spacing:-.01em;text-decoration:none;color:var(--bone);
}
.nav{flex:1 1 auto;min-width:0}
.nav__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap}
.nav__item{display:block}
.nav__link{
  display:flex;align-items:baseline;gap:6px;
  padding:9px 12px;border-radius:2px;
  font-size:14px;font-weight:600;letter-spacing:.01em;
  color:var(--stone);text-decoration:none;
  transition:color 120ms ease,background-color 120ms ease,box-shadow 120ms ease;
}
.nav__num{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;
  color:var(--frost);
  transition:color 120ms ease;
}
.nav__label{white-space:nowrap}
.nav__link:hover{color:var(--bone);background:rgba(30,77,63,.55)}
.nav__link:hover .nav__num{color:var(--lime)}
.nav__link[aria-current="page"]{
  color:var(--lime);
  background:rgba(198,242,74,.08);
  box-shadow:inset 0 -2px 0 var(--lime);
}
.nav__link[aria-current="page"] .nav__num{color:var(--lime)}
.header__cta{
  margin-left:auto;
  display:inline-flex;align-items:center;
  padding:10px 18px;border-radius:2px;
  background:var(--lime);color:var(--ink);
  font-family:var(--font-display);font-weight:800;font-size:13px;letter-spacing:.08em;
  text-decoration:none;white-space:nowrap;
  transition:background-color 120ms ease,color 120ms ease;
}
.header__cta:hover{background:var(--bone)}
.header__cta:focus-visible{outline-color:var(--bone)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:8px 12px;border-radius:2px;
  background:transparent;border:1px solid var(--line-strong);
  color:var(--bone);cursor:pointer;
  font-size:12px;letter-spacing:.14em;
  transition:border-color 120ms ease,color 120ms ease;
}
.nav-toggle:hover{border-color:var(--lime);color:var(--lime)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:var(--lime);border-radius:1px}
.nav-toggle[aria-expanded="true"]{border-color:var(--lime);color:var(--lime)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:0;
  padding:0;
  background:linear-gradient(180deg,var(--moss) 0%,#0E2A22 58%,var(--ink) 100%);
  border-top:1px solid var(--line-strong);
  color:var(--bone);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;
  width:132px;height:3px;background:var(--lime);
}
.footer__grid{
  display:grid;
  grid-template-columns:1.7fr .9fr .9fr .9fr 1.5fr;
  gap:44px 32px;
  padding:56px 0 36px;
}
.footer__brand{display:flex;flex-direction:column;gap:12px}
.footer__logo{
  display:inline-flex;align-items:baseline;gap:8px;
  font-family:var(--font-display);font-weight:800;font-size:34px;line-height:1;
  letter-spacing:-.04em;color:var(--lime);text-decoration:none;
}
.footer__logo-sub{
  font-size:15px;font-weight:600;letter-spacing:.14em;color:var(--bone);
}
.footer__tagline{
  font-family:var(--font-serif);font-size:19px;line-height:1.35;
  color:var(--bone);letter-spacing:.01em;
}
.footer__note{
  font-size:13px;line-height:1.6;color:var(--stone);max-width:34ch;
}
.footer__col{display:flex;flex-direction:column;gap:14px}
.footer__title{
  font-family:var(--font-mono);font-size:11px;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--frost);
}
.footer__links{display:flex;flex-direction:column;gap:10px}
.footer__links a{
  font-size:14px;color:rgba(242,240,230,.74);text-decoration:none;
  transition:color 120ms ease,padding-left 120ms ease;
}
.footer__links a:hover{color:var(--lime);padding-left:4px}
.footer__contact{display:flex;flex-direction:column;gap:14px}
.footer__contact-list{display:flex;flex-direction:column;gap:10px}
.footer__contact-row{display:flex;gap:10px;align-items:baseline}
.footer__k{
  flex:0 0 34px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--frost);
}
.footer__v{font-size:13px;line-height:1.55;color:rgba(242,240,230,.82);word-break:break-word}
.footer__legal{
  display:flex;flex-wrap:wrap;gap:10px 28px;justify-content:space-between;
  padding:18px 0 28px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.06em;
  color:var(--stone);
}
.footer__legal-line{margin:0}

/* ---------- 通用容器与网格 ---------- */
.wrap{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 var(--gutter)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gutter)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

.section{padding:56px 0}
.section--tight{padding:28px 0}
.section-head{
  display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;
  padding-bottom:12px;margin-bottom:24px;
  border-bottom:1px solid var(--line);
}
.section-head__num{
  font-family:var(--font-serif);font-style:italic;font-size:18px;
  color:var(--clay);
}
.section-head__title{font-size:clamp(22px,2.6vw,34px);margin:0}
.section-head__more{
  margin-left:auto;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--stone);text-decoration:none;
}
.section-head__more:hover{color:var(--lime)}
.eyebrow{
  display:inline-block;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--frost);
}
.prose{max-width:68ch;font-size:16px;line-height:1.6;color:rgba(242,240,230,.86)}
.prose p+p{margin-top:1.1em}
.prose a{color:var(--lime);text-decoration:underline;text-underline-offset:3px}

/* ---------- 面包屑 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  padding:18px 0 4px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--stone);
}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--line-strong)}
.crumbs a{color:var(--stone);text-decoration:none;transition:color 120ms ease}
.crumbs a:hover{color:var(--lime)}
.crumbs [aria-current="page"]{color:var(--bone)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:14px 24px;border-radius:2px;border:1px solid transparent;
  font-family:var(--font-display);font-weight:800;font-size:14px;letter-spacing:.08em;
  text-decoration:none;cursor:pointer;
  transition:background-color 120ms ease,color 120ms ease,border-color 120ms ease;
}
.btn--primary{background:var(--lime);color:var(--ink)}
.btn--primary:hover{background:var(--bone)}
.btn--ghost{background:transparent;color:var(--bone);border-color:var(--line-strong)}
.btn--ghost:hover{border-color:var(--lime);color:var(--lime)}
.btn--clay{background:var(--clay);color:#fff}
.btn--clay:hover{background:#C94E2C}

/* ---------- 面板与数据件 ---------- */
.panel{
  background:var(--moss);
  border:1px solid var(--line);
  border-radius:2px;
  padding:24px;
}
.panel--field{background:var(--field)}
.panel--glass{
  background:var(--glass);
  -webkit-backdrop-filter:blur(12px) saturate(120%);
  backdrop-filter:blur(12px) saturate(120%);
  border-color:rgba(242,240,230,.24);
}
.panel__title{font-size:20px;line-height:1.2;margin-bottom:10px}
.stat__num{
  display:block;
  font-family:var(--font-mono);font-size:clamp(34px,5vw,56px);line-height:.95;
  letter-spacing:.02em;color:var(--lime);
}
.stat__label{
  display:block;margin-top:8px;
  font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--stone);
}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 9px;border-radius:2px;
  border:1px solid var(--line-strong);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--stone);
}
.tag--lime{background:var(--lime);border-color:var(--lime);color:var(--ink)}
.tag--clay{background:var(--clay);border-color:var(--clay);color:#fff}
.tag--amber{background:var(--amber);border-color:var(--amber);color:var(--ink)}

/* ---------- 图片容器（供页面阶段放图） ---------- */
.media{
  position:relative;overflow:hidden;
  background:var(--field);
  border:1px solid var(--line);
  border-radius:2px;
}
.media img{width:100%;height:100%;object-fit:cover;filter:saturate(.86) contrast(1.06)}
.media--wide{aspect-ratio:21/9}
.media--16x10{aspect-ratio:16/10}
.media--tall{aspect-ratio:3/4}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(11,15,12,0) 45%,rgba(11,15,12,.45) 100%),
    repeating-linear-gradient(90deg,rgba(242,240,230,.05) 0 1px,transparent 1px 56px);
}
.media__caption{
  position:absolute;left:12px;bottom:10px;z-index:2;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--bone);
}
.media__placeholder{
  display:grid;place-items:center;min-height:180px;height:100%;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.16em;
  color:var(--stone);
}

/* ---------- 显现 ---------- */
.js [data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity 240ms ease,transform 240ms ease;
}
.js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (min-width:961px){
  body{padding-left:var(--rail-w)}
  .site-header{position:sticky;top:0}
  .progress{left:var(--rail-w)}
}
@media (max-width:1280px){
  .footer__grid{grid-template-columns:1.5fr .9fr .9fr 1.5fr;gap:36px 28px}
  .footer__brand{grid-column:1/-1}
}
@media (max-width:1100px){
  .nav__link{font-size:13px;padding:8px 9px}
  .header__bar{gap:10px;padding:0 12px 0 16px}
}
@media (max-width:960px){
  body{padding-bottom:84px}
  .site-header{position:relative}
  .progress{left:0}
  .rail{
    position:fixed;left:12px;right:12px;bottom:12px;top:auto;
    width:auto;height:56px;
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;padding:0 18px;
    border-radius:999px;
    border:1px solid var(--line-strong);
    background:rgba(18,51,42,.94);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    box-shadow:0 12px 34px rgba(0,0,0,.48);
    z-index:80;
  }
  .rail__brand{flex-direction:row;align-items:center;gap:8px}
  .rail__mark{font-size:22px}
  .rail__name{writing-mode:horizontal-tb;font-size:12px;letter-spacing:.2em}
  .rail__tag{display:none}
  .rail__state{margin-top:0;flex-direction:row;align-items:center;gap:8px}
  .rail__index{font-size:14px}
  .rail__section{writing-mode:horizontal-tb;font-size:11px;letter-spacing:.16em}

  .bar__brand{display:inline-flex}
  .nav-toggle{display:inline-flex;margin-left:auto;order:3}
  .header__cta{display:none}
  .header__bar{flex-wrap:wrap;padding:8px 16px;gap:12px}
  .header__bar::after{width:64px}

  .nav{
    display:none;order:4;flex:1 1 100%;
    margin:0 -16px -8px;
    border-top:1px solid var(--line);
    background:var(--ink);
  }
  .nav[data-open]{
    display:block;
    animation:navIn 200ms ease both;
  }
  @keyframes navIn{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}
  .nav__list{flex-direction:column;align-items:stretch;gap:0;padding:8px 0}
  .nav__item{border-bottom:1px solid rgba(168,178,172,.12)}
  .nav__item:last-child{border-bottom:0}
  .nav__link{padding:14px 16px;font-size:15px;justify-content:flex-start}
  .nav__link[aria-current="page"]{box-shadow:inset 3px 0 0 var(--lime)}

  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px 24px;padding:44px 0 28px}
  .footer__brand,.footer__contact{grid-column:1/-1}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-3{grid-column:span 3}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:1/-1}
  .section{padding:40px 0}
}
@media (max-width:640px){
  :root{--gutter:18px}
  body{font-size:16px}
  .glasstop{padding:0 14px;gap:10px}
  .glasstop__label{font-size:10px;letter-spacing:.12em;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:48%}
  .chip{font-size:10px;padding:5px 10px;letter-spacing:.1em}
  .footer__grid{grid-template-columns:1fr;gap:28px}
  .footer__logo{font-size:28px}
  .footer__legal{flex-direction:column;gap:6px}
  .panel{padding:18px}
  .section-head__more{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;
    scroll-behavior:auto !important;
  }
  .rail__dot{animation:none}
  .js [data-reveal]{opacity:1;transform:none;transition:none}
  .nav[data-open]{animation:none}
}