:root{
  --green-900:#0A2A22;
  --green-950:#051D18;
  --green-700:#15483C;
  --mint:#4FE3C1;
  --flame:#E5432A;
  --amber:#F2A93B;
  --cream:#F4ECDE;
  --paper:#FBF7EE;
  --ink:#1B1712;
  --gray:#8B8479;
  --font-display:"Oswald","Barlow Condensed","Arial Narrow","Helvetica Neue",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --gutter:clamp(16px,4vw,56px);
  --rail:72px;
  --width:1280px;
  --dur:200ms;
  --ease:cubic-bezier(.22,.61,.36,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:110px}
body{
  margin:0;
  background:var(--cream);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{max-width:100%;display:block}
h1,h2,h3,h4,p,figure,blockquote,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit}
button{font:inherit;color:inherit;border:0;background:none;cursor:pointer}
:focus-visible{outline:3px solid var(--mint);outline-offset:3px;border-radius:2px}

/* ---------- 通用排版 ---------- */
.display-1{
  font-family:var(--font-display);
  font-weight:600;text-transform:uppercase;
  font-size:clamp(40px,7vw,96px);line-height:.92;
  letter-spacing:-.015em;
}
.display-2{
  font-family:var(--font-display);
  font-weight:600;text-transform:uppercase;
  font-size:clamp(28px,4vw,48px);line-height:1;
  letter-spacing:-.01em;
}
.eyebrow{
  display:flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--green-700);
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--flame);flex:none}
.index-label{
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.22em;text-transform:uppercase;color:var(--gray);
}
.lede{font-size:clamp(16px,1.4vw,19px);line-height:1.7;color:#4a443b;max-width:64ch}
.rule{border:0;border-top:1px solid var(--gray);opacity:.35;margin:0}

/* ---------- 布局 ---------- */
.container{width:100%;max-width:var(--width);margin:0 auto;padding:0 var(--gutter)}
.shell{width:100%;max-width:var(--width);margin:0 auto;padding-left:calc(var(--rail) + var(--gutter));padding-right:var(--gutter)}
.section{padding:clamp(48px,7vw,96px) 0}
.section--tight{padding:clamp(28px,4vw,56px) 0}
.section--dark{background:var(--green-900);color:var(--cream)}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(12px,1.6vw,24px)}
.span-4,.span-5,.span-6,.span-7,.span-8,.span-12{grid-column:span 12}
.board-grid{
  background-image:
    linear-gradient(rgba(79,227,193,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(79,227,193,.07) 1px,transparent 1px);
  background-size:48px 48px;
}
.slant-band{
  position:relative;background:var(--green-900);color:var(--cream);
  padding:clamp(40px,6vw,80px) var(--gutter);
  transform:skewY(-2deg);
}
.slant-band > *{transform:skewY(2deg)}

/* ---------- 左轨轮次刻度 ---------- */
.rail{
  position:fixed;left:0;top:0;bottom:0;width:var(--rail);z-index:40;
  display:flex;flex-direction:column;justify-content:center;
  border-right:1px solid rgba(27,23,18,.14);
  background:rgba(244,236,222,.72);
}
.rail__list{display:flex;flex-direction:column;align-items:center;gap:14px}
.rail__label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;
  text-transform:uppercase;color:var(--gray);
}
.rail__tick{
  writing-mode:vertical-rl;text-decoration:none;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:var(--gray);padding:8px 4px;border-left:2px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.rail__tick:hover{color:var(--green-900);border-left-color:var(--mint);transform:translateX(2px)}
.rail__tick[aria-current="true"]{color:var(--flame);border-left-color:var(--flame)}

/* ---------- 按钮 / 面包屑 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-weight:600;
  text-transform:uppercase;letter-spacing:.1em;font-size:14px;
  padding:13px 22px;border-radius:999px;
  border:1px solid var(--green-900);text-decoration:none;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.btn--primary{background:var(--flame);border-color:var(--flame);color:#fff}
.btn--primary:hover{background:var(--green-900);border-color:var(--green-900);color:var(--mint);transform:translate(-2px,-2px)}
.btn--ghost{background:transparent;color:var(--green-900)}
.btn--ghost:hover{border-color:var(--mint);box-shadow:4px 4px 0 rgba(79,227,193,.6);transform:translate(-2px,-2px)}
.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--gray);
}
.breadcrumbs a{text-decoration:none;color:var(--green-700)}
.breadcrumbs a:hover{color:var(--flame)}
.breadcrumbs li::after{content:"/";margin-left:8px;color:var(--gray)}
.breadcrumbs li:last-child::after{content:""}
.tag{
  display:inline-flex;align-items:center;gap:6px;border-radius:2px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;padding:4px 9px;
  border:1px solid var(--green-700);color:var(--green-700);
}
.tag--flame{background:var(--flame);border-color:var(--flame);color:#fff}
.tag--amber{background:var(--amber);border-color:var(--amber);color:var(--green-950)}
.tag--mint{background:var(--mint);border-color:var(--mint);color:var(--green-950)}

/* ---------- 面板 / 数据条 ---------- */
.panel{
  position:relative;background:var(--paper);
  border:1px solid rgba(27,23,18,.14);
  padding:clamp(18px,2.2vw,28px);
}
.panel::before{
  content:"";position:absolute;left:-1px;top:-1px;width:14px;height:14px;
  border-top:3px solid var(--mint);border-left:3px solid var(--mint);
}
.panel--dark{background:var(--green-900);color:var(--cream);border-color:rgba(79,227,193,.28)}
.panel__header{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding-bottom:12px;margin-bottom:16px;
  border-bottom:1px solid rgba(27,23,18,.16);
}
.panel--dark .panel__header{border-color:rgba(79,227,193,.24)}
.stat-strip{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:1px;background:rgba(27,23,18,.14);border:1px solid rgba(27,23,18,.14);
}
.stat{background:var(--paper);padding:16px 18px}
.stat__num{
  display:block;font-family:var(--font-mono);font-weight:700;
  font-size:clamp(26px,3.4vw,40px);line-height:1;color:var(--green-900);
  letter-spacing:.02em;
}
.stat__label{
  display:block;margin-top:6px;font-family:var(--font-mono);
  font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--gray);
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;overflow:hidden;aspect-ratio:16/10;
  background:var(--green-950);border:1px solid rgba(27,23,18,.18);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(5,29,24,.04),rgba(5,29,24,.46));
}
.media-frame__img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.92) contrast(1.06);
}
.media-frame__caption{
  position:absolute;left:0;bottom:0;z-index:2;
  padding:8px 12px;background:var(--green-950);color:var(--mint);
  font-family:var(--font-mono);font-size:11px;
  letter-spacing:.16em;text-transform:uppercase;
}

/* ---------- 显现 ---------- */
[data-reveal]{transition:opacity 420ms var(--ease),transform 420ms var(--ease)}
[data-reveal="pending"]{opacity:0;transform:translateY(14px)}
[data-reveal="in"]{opacity:1;transform:none}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:50%;z-index:90;
  transform:translate(-50%,-180%);
  background:var(--mint);color:var(--green-950);
  padding:10px 18px;border-radius:999px;text-decoration:none;
  font-family:var(--font-display);font-size:13px;
  text-transform:uppercase;letter-spacing:.12em;
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

/* ---------- 页头 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  padding:14px var(--gutter) 0;pointer-events:none;
}
.site-header > *{pointer-events:auto}
.scroll-progress{
  position:fixed;top:0;left:0;width:100%;height:3px;z-index:70;
  background:linear-gradient(90deg,var(--mint),var(--amber),var(--flame));
  transform:scaleX(0);transform-origin:0 50%;pointer-events:none;
}
.nav-pod{
  display:flex;align-items:center;gap:clamp(8px,1.2vw,20px);
  width:100%;max-width:var(--width);margin:0 auto;
  background:var(--green-900);color:var(--cream);
  border:1px solid rgba(79,227,193,.26);border-radius:999px;
  padding:7px 10px 7px 12px;
  box-shadow:0 22px 44px -30px rgba(5,29,24,.95);
  transition:padding var(--dur) var(--ease),background var(--dur) var(--ease);
}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none}
.brand__glyph{
  display:grid;place-items:center;width:34px;height:34px;
  background:var(--mint);color:var(--green-950);
  font-family:var(--font-mono);font-weight:700;font-size:14px;letter-spacing:.02em;
  clip-path:polygon(0 0,100% 0,100% 76%,86% 100%,0 100%);
}
.brand__text{
  font-family:var(--font-display);font-weight:600;font-size:15px;
  text-transform:uppercase;letter-spacing:.08em;
}
.site-nav{margin-left:auto;transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease)}
.site-nav__list{display:flex;align-items:center;gap:2px}
.site-nav__link{
  display:block;padding:9px 13px;border-radius:999px;
  font-size:14px;text-decoration:none;color:rgba(244,236,222,.78);
  border:1px solid transparent;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.site-nav__link:hover{background:var(--mint);color:var(--green-950)}
.site-nav__link[aria-current="page"]{
  color:var(--cream);
  border-color:rgba(79,227,193,.55);
  background:rgba(79,227,193,.12);
  box-shadow:inset 0 -2px 0 var(--mint);
}
.round-chip{
  display:inline-flex;align-items:center;gap:9px;flex:none;
  padding:7px 14px;border-radius:999px;text-decoration:none;
  background:var(--flame);color:#fff;
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.round-chip__label{font-size:10px;letter-spacing:.2em;text-transform:uppercase;opacity:.86}
.round-chip__num{font-family:var(--font-mono);font-weight:700;font-size:17px;line-height:1;letter-spacing:.02em}
.round-chip:hover{background:var(--mint);color:var(--green-950);transform:translateY(-2px)}
.nav-toggle{
  display:none;position:relative;z-index:70;align-items:center;gap:8px;
  padding:9px 15px;border-radius:999px;
  border:1px solid rgba(79,227,193,.4);color:var(--cream);
  font-family:var(--font-mono);font-size:12px;
  letter-spacing:.16em;text-transform:uppercase;
}
.nav-toggle__bars{position:relative;display:block;width:16px;height:10px}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--mint);
  transition:transform var(--dur) var(--ease),top var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:8px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}

/* 滚动后的窄条态 */
.site-header[data-compact="true"] .nav-pod{padding:5px 8px 5px 10px}
.site-header[data-compact="true"] .site-nav{opacity:0;visibility:hidden;transform:translateY(-6px);pointer-events:none}
.site-header[data-compact="true"] .nav-pod:hover .site-nav,
.site-header[data-compact="true"] .nav-pod:focus-within .site-nav{
  opacity:1;visibility:visible;transform:none;pointer-events:auto;
}

/* ---------- 底部 dock ---------- */
.dock{
  position:fixed;left:50%;bottom:16px;z-index:55;
  transform:translateX(-50%);
  display:flex;align-items:center;gap:4px;padding:6px;
  border-radius:999px;
  background:rgba(5,29,24,.94);
  border:1px solid rgba(79,227,193,.24);
  box-shadow:0 18px 36px -24px rgba(5,29,24,.9);
}
.dock__round{
  display:flex;align-items:center;gap:6px;padding:6px 12px;white-space:nowrap;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mint);
}
.dock__round b{font-size:15px;color:var(--cream)}
.dock__quick{
  display:inline-flex;align-items:center;padding:8px 14px;border-radius:999px;
  font-size:13px;white-space:nowrap;text-decoration:none;
  color:rgba(244,236,222,.85);
  transition:background var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.dock__quick:hover{background:var(--mint);color:var(--green-950);transform:translateY(-2px)}
.dock__top{
  display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;
  border:1px solid rgba(79,227,193,.35);color:var(--mint);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.dock__top:hover{background:var(--flame);border-color:var(--flame);color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;overflow:hidden;
  margin-top:clamp(56px,8vw,110px);
  padding:clamp(52px,7vw,92px) var(--gutter) 0;
  background:var(--green-950);color:var(--cream);
}
.site-footer::before{
  content:"";position:absolute;left:-5%;right:-5%;top:-40px;height:80px;
  background:var(--green-950);transform:skewY(-1.6deg);
}
.site-footer::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.55;
  background-image:
    linear-gradient(rgba(79,227,193,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(79,227,193,.05) 1px,transparent 1px);
  background-size:56px 56px;
}
.site-footer > *{position:relative;z-index:1}
.footer-wrap{width:100%;max-width:var(--width);margin:0 auto}
.footer-brand{
  display:flex;flex-wrap:wrap;align-items:flex-end;gap:10px 24px;
  padding-bottom:26px;border-bottom:1px solid rgba(79,227,193,.2);
}
.footer-brand__mark{
  font-family:var(--font-display);font-weight:600;
  font-size:clamp(34px,6vw,72px);line-height:.9;
  text-transform:uppercase;letter-spacing:-.01em;color:var(--cream);
}
.footer-brand__mark em{font-style:normal;color:var(--mint)}
.footer-brand__line{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:rgba(244,236,222,.6);
}
.footer-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
  padding:clamp(28px,4vw,48px) 0;
}
.footer-col__title{
  margin-bottom:14px;font-family:var(--font-mono);font-size:11px;
  font-weight:400;letter-spacing:.22em;text-transform:uppercase;color:var(--mint);
}
.footer-list{display:flex;flex-direction:column;gap:10px}
.footer-list a{
  display:inline-block;font-size:15px;text-decoration:none;
  color:rgba(244,236,222,.74);padding-bottom:1px;border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.footer-list a:hover{color:var(--mint);border-color:var(--mint);transform:translateX(3px)}
.footer-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;
  padding:22px 0 116px;
  border-top:1px solid rgba(79,227,193,.2);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  color:rgba(244,236,222,.6);
}

/* ---------- 平板 ---------- */
@media (max-width:1100px){
  .site-nav__link{padding:9px 10px;font-size:13px}
  .round-chip__label{display:none}
}

/* ---------- 移动 ---------- */
@media (max-width:900px){
  :root{--rail:0px}
  body{font-size:16px}
  .rail{display:none}
  .shell{padding-left:var(--gutter)}
  .span-4,.span-5,.span-6,.span-7,.span-8{grid-column:span 12}

  .site-header{padding:10px var(--gutter) 0}
  .nav-pod{padding:7px 8px 7px 10px;gap:8px}
  .nav-toggle{display:inline-flex}

  .site-nav{
    position:fixed;inset:0;z-index:65;margin:0;
    display:flex;flex-direction:column;justify-content:center;
    padding:clamp(96px,22vw,150px) clamp(24px,8vw,60px) clamp(48px,12vw,96px);
    background:var(--green-950);
    opacity:0;visibility:hidden;transform:translateY(-100%);
    transition:opacity var(--dur) var(--ease),transform 260ms var(--ease),visibility var(--dur) var(--ease);
  }
  .site-nav__list{flex-direction:column;align-items:flex-start;gap:6px}
  .site-nav__link{
    font-family:var(--font-display);font-size:clamp(26px,7.5vw,42px);
    text-transform:uppercase;letter-spacing:.02em;line-height:1.15;
    padding:8px 0;border:0;border-radius:0;color:rgba(244,236,222,.8);
  }
  .site-nav__link:hover{background:none;color:var(--mint)}
  .site-nav__link[aria-current="page"]{
    background:none;border:0;box-shadow:none;color:var(--mint);
  }
  .site-nav__link[aria-current="page"]::before{content:"— ";color:var(--flame)}
  .site-nav[data-open="true"]{opacity:1;visibility:visible;transform:none}
  .site-header[data-compact="true"] .nav-pod{padding:7px 8px 7px 10px}
  .site-header[data-compact="true"] .site-nav{
    opacity:0;visibility:hidden;transform:translateY(-100%);pointer-events:auto;
  }
  .site-header[data-compact="true"] .site-nav[data-open="true"]{
    opacity:1;visibility:visible;transform:none;
  }

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ---------- 小屏 ---------- */
@media (max-width:560px){
  .brand__text{font-size:13px;letter-spacing:.04em}
  .round-chip{padding:6px 10px}
  .round-chip__num{font-size:15px}
  .brand__glyph{width:30px;height:30px;font-size:13px}
  .dock{bottom:12px;gap:2px;padding:5px}
  .dock__quick{padding:7px 10px;font-size:12px}
  .dock__round-text{display:none}
  .dock__top{padding:7px 10px;font-size:11px}
  .footer-grid{grid-template-columns:1fr}
  .footer-meta{padding-bottom:104px;font-size:11px}
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    transition-duration:.01ms !important;
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
  }
  [data-reveal],[data-reveal="pending"]{opacity:1 !important;transform:none !important}
}