:root{
  --ink:#071A2F;
  --ink-2:#0D2A47;
  --night:#04101F;
  --paper:#F4EBDD;
  --graphite:#121417;
  --cyan:#2BE4C5;
  --shot:#FF7A3D;
  --heat:#D93A2F;
  --volt:#6FB6FF;
  --gold:#FFC857;
  --rail:92px;
  --pad:clamp(18px,3.6vw,52px);
  --gap:clamp(16px,2.2vw,28px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --line-soft:rgba(244,235,221,.14);
  --line-strong:rgba(244,235,221,.3);
  --font-display:"Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-data:"IBM Plex Mono","Roboto Mono",SFMono-Regular,Consolas,monospace;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote,address{margin:0}
ul,ol{padding:0;list-style:none}
img,picture,svg{display:block;max-width:100%}
img{height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--cyan);color:var(--night)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}

body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.012em;
  color:var(--paper);
  background:
    radial-gradient(120% 80% at 84% -12%,rgba(43,228,197,.16),transparent 62%),
    radial-gradient(90% 65% at -6% 104%,rgba(255,122,61,.12),transparent 66%),
    var(--ink);
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{font-family:var(--font-display);font-weight:600;line-height:1.06;letter-spacing:.012em}
h1{font-size:clamp(40px,7vw,86px);font-weight:500;line-height:.96;letter-spacing:-.01em}
h2{font-size:clamp(28px,4vw,48px)}
h3{font-size:clamp(20px,2.4vw,27px)}
p{max-width:70ch}

/* ---------- 通用布局 ---------- */
.container{width:100%;max-width:1440px;margin-inline:auto;padding-inline:var(--pad)}
.section{padding-block:clamp(40px,6vw,92px)}
.grid{display:grid;gap:var(--gap)}
.grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:14px;left:14px;z-index:220;
  padding:10px 18px;border-radius:2px;
  background:var(--cyan);color:var(--night);
  font-size:13px;font-weight:700;letter-spacing:.1em;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 站点头部 ---------- */
.site-header{
  position:sticky;top:0;z-index:120;
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  grid-template-rows:auto auto;
  background:rgba(7,26,47,.94);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  border-bottom:1px solid var(--line-soft);
}
.brand-rail{
  grid-column:1;grid-row:1 / span 2;
  display:flex;align-items:center;justify-content:center;
  padding:10px 8px;
  background:linear-gradient(180deg,var(--ink-2) 0%,var(--ink) 100%);
  border-right:1px solid rgba(43,228,197,.3);
}
.brand{
  display:flex;flex-direction:column;align-items:center;gap:12px;
  color:var(--paper);
  transition:color .18s var(--ease);
}
.brand:hover{color:var(--cyan)}
.brand-glyph{
  display:grid;place-items:center;
  width:36px;height:36px;
  background:var(--cyan);color:var(--night);
  font-family:var(--font-display);font-size:21px;font-weight:700;line-height:1;
  clip-path:polygon(0 0,100% 0,100% 66%,66% 100%,0 100%);
  transition:background .18s var(--ease);
}
.brand:hover .brand-glyph{background:var(--shot)}
.brand-name{
  writing-mode:vertical-rl;
  font-family:var(--font-display);
  font-size:14px;font-weight:600;letter-spacing:.26em;
  color:inherit;
}

.header-meta{
  grid-column:2;grid-row:1;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:7px var(--pad);
  border-bottom:1px dashed rgba(244,235,221,.16);
}
.status-strip{
  display:flex;align-items:center;flex-wrap:wrap;gap:10px;
  font-family:var(--font-data);
  font-size:11px;letter-spacing:.13em;line-height:1.4;
  color:rgba(244,235,221,.68);
  max-width:none;
}
.status-dot{
  width:8px;height:8px;flex:0 0 8px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 0 rgba(43,228,197,.55);
  animation:statusPulse 2.6s var(--ease) infinite;
}
.status-sep{width:1px;height:12px;background:rgba(244,235,221,.24)}
.status-strip__alt{color:var(--volt);letter-spacing:.1em}
.header-tag{
  font-size:11px;letter-spacing:.28em;color:var(--cyan);
  white-space:nowrap;max-width:none;
}

.header-bar{
  grid-column:2;grid-row:2;
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:11px var(--pad) 13px;
}
.header-actions{display:flex;align-items:center;gap:12px;flex:0 0 auto}

.primary-nav{display:flex;align-items:center;min-width:0}
.primary-nav__head{display:none}
.primary-nav__list{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:clamp(10px,1.7vw,26px);
}
.primary-nav__item{display:block}
.nav-link{
  position:relative;display:inline-block;
  padding:8px 2px;
  font-size:14px;letter-spacing:.1em;
  color:rgba(244,235,221,.78);
  transition:color .18s var(--ease);
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--cyan);
  transform:scaleX(0);transform-origin:left;
  transition:transform .2s var(--ease);
}
.nav-link:hover{color:var(--paper)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link[aria-current="page"]{color:var(--cyan);font-weight:600}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--shot)}
.primary-nav__cta{display:none}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:9px 12px;
  border:1px solid var(--line-strong);border-radius:2px;
  font-size:12px;letter-spacing:.18em;color:var(--paper);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.nav-toggle__bars{display:grid;gap:4px;width:20px}
.nav-toggle__bars span{display:block;height:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle__label{line-height:1}
.nav-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(244,235,221,.12);overflow:hidden;pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--volt) 58%,var(--shot));
}

@keyframes statusPulse{
  0%{box-shadow:0 0 0 0 rgba(43,228,197,.5)}
  70%{box-shadow:0 0 0 7px rgba(43,228,197,0)}
  100%{box-shadow:0 0 0 0 rgba(43,228,197,0)}
}

/* ---------- 通用按钮与索引组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 20px;
  font-size:14px;font-weight:600;letter-spacing:.08em;line-height:1.2;
  border:1px solid transparent;border-radius:2px;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--primary{
  background:linear-gradient(100deg,var(--cyan) 0 76%,rgba(43,228,197,.5) 76% 100%);
  color:var(--night);
}
.btn--primary:hover{background:linear-gradient(100deg,var(--shot) 0 76%,rgba(255,122,61,.5) 76% 100%);color:var(--night)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line-strong)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--quiet{background:rgba(43,228,197,.12);color:var(--cyan);border-color:rgba(43,228,197,.3)}
.btn--quiet:hover{background:rgba(43,228,197,.2)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-data);
  font-size:11px;letter-spacing:.28em;line-height:1.4;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;flex:0 0 26px}

.chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  font-size:13px;letter-spacing:.06em;
  color:rgba(244,235,221,.82);
  background:rgba(13,42,71,.7);
  border:1px solid rgba(244,235,221,.18);border-radius:2px;
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.chip:hover{border-color:var(--cyan);color:var(--paper)}
.chip[data-active="true"],.chip[aria-pressed="true"]{
  background:var(--cyan);border-color:var(--cyan);
  color:var(--night);font-weight:600;
}

.tag{
  display:inline-flex;align-items:center;
  padding:3px 8px;border-radius:2px;
  background:var(--shot);color:var(--graphite);
  font-family:var(--font-data);font-size:10px;font-weight:600;letter-spacing:.16em;
}
.status-pill{
  display:inline-flex;align-items:center;gap:8px;
  padding:5px 12px;border-radius:999px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.14em;
  color:var(--cyan);
  background:rgba(7,26,47,.6);
  border:1px solid rgba(43,228,197,.34);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.data-num{
  font-family:var(--font-data);
  font-weight:700;line-height:1;letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-data);
  font-size:11px;letter-spacing:.14em;
  color:rgba(244,235,221,.6);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:rgba(244,235,221,.3)}
.breadcrumb a{transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--paper)}

.panel{
  padding:clamp(18px,2.4vw,30px);
  border-radius:3px;
  background:var(--ink-2);
}
.panel--glass{
  background:rgba(13,42,71,.55);
  border:1px solid var(--line-soft);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
}
.panel--paper{background:var(--paper);color:var(--graphite)}

.media-frame{
  position:relative;overflow:hidden;
  border:1px solid var(--line-soft);border-radius:3px;
  background:linear-gradient(140deg,var(--ink-2) 0%,var(--night) 100%);
}
.media-frame > img,.media-frame > picture > img{
  width:100%;height:100%;object-fit:cover;
}
.media-frame--wide{aspect-ratio:16 / 9}
.media-frame--tall{aspect-ratio:3 / 4}
.media-frame--slant{clip-path:polygon(0 0,100% 0,100% 88%,0 100%)}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:14px 16px;
  font-family:var(--font-data);font-size:11px;letter-spacing:.12em;
  color:rgba(244,235,221,.86);
  background:linear-gradient(180deg,transparent,rgba(4,16,31,.86));
}

.is-hidden{display:none !important}

.has-js [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.has-js [data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 站点页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--night);
  color:var(--paper);
  border-top:1px solid rgba(43,228,197,.22);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,var(--shot) 0%,var(--heat) 26%,var(--cyan) 66%,var(--volt) 100%);
}
.footer-inner{
  max-width:1440px;margin-inline:auto;
  padding:clamp(40px,5vw,64px) var(--pad) clamp(28px,4vw,44px);
  display:grid;
  grid-template-columns:minmax(230px,1fr) minmax(0,2.2fr);
  gap:clamp(28px,4vw,64px);
}
.footer-brand{min-width:0}
.footer-tag{
  font-family:var(--font-data);
  font-size:11px;letter-spacing:.26em;
  color:var(--volt);
  margin-bottom:16px;
}
.footer-wordmark{
  font-family:var(--font-display);
  font-size:clamp(34px,4.4vw,56px);
  font-weight:600;line-height:1.02;letter-spacing:.03em;
  color:var(--paper);
  max-width:none;
}
.footer-summary{
  margin-top:16px;
  max-width:34ch;
  font-size:14px;line-height:1.75;
  color:rgba(244,235,221,.72);
}
.footer-note{
  margin-top:12px;
  max-width:36ch;
  font-size:12px;line-height:1.7;
  color:rgba(244,235,221,.52);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(18px,2.4vw,34px);
}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--font-data);
  font-size:11px;letter-spacing:.2em;
  color:var(--cyan);
  padding-bottom:10px;margin-bottom:12px;
  border-bottom:1px solid rgba(244,235,221,.14);
  max-width:none;
}
.footer-list{display:grid;gap:2px}
.footer-link{
  display:inline-block;
  padding:4px 0;
  font-size:14px;
  color:rgba(244,235,221,.82);
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);transform:translateX(3px)}
.footer-contact-item{display:grid;gap:2px;margin-bottom:12px}
.footer-contact-label{
  font-family:var(--font-data);
  font-size:10px;letter-spacing:.2em;
  color:var(--volt);
}
.footer-contact-value{
  font-size:13px;line-height:1.6;
  color:rgba(244,235,221,.86);
  word-break:break-word;
}
.footer-address{
  font-style:normal;
  font-size:13px;line-height:1.65;
  color:rgba(244,235,221,.86);
}
.footer-base{
  border-top:1px solid rgba(244,235,221,.12);
  padding:16px var(--pad) 22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 28px;
  font-family:var(--font-data);
  font-size:12px;letter-spacing:.08em;
  color:rgba(244,235,221,.58);
}
.footer-base__group{display:flex;flex-wrap:wrap;align-items:center;gap:6px 22px;max-width:none}
.footer-legal{transition:color .18s var(--ease)}
.footer-legal:hover{color:var(--cyan)}

/* ---------- 平板 ---------- */
@media (max-width:1080px){
  .footer-inner{grid-template-columns:1fr}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-summary,.footer-note{max-width:52ch}
}

/* ---------- 移动导航与头部收缩 ---------- */
@media (max-width:899px){
  .site-header{grid-template-columns:minmax(0,1fr) auto;grid-template-rows:auto}
  .brand-rail{
    grid-column:1;grid-row:1;
    position:relative;z-index:110;
    justify-content:flex-start;
    padding:12px var(--pad);
    background:none;border-right:0;
    border-bottom:1px solid rgba(244,235,221,.1);
  }
  .brand{flex-direction:row;gap:10px}
  .brand-name{writing-mode:horizontal-tb;font-size:19px;letter-spacing:.16em}
  .brand-glyph{width:32px;height:32px;font-size:19px}
  .header-meta{display:none}
  .header-bar{
    grid-column:2;grid-row:1;
    position:relative;z-index:110;
    padding:10px var(--pad) 10px 0;
  }
  .header-cta{display:none}
  .nav-toggle{display:inline-flex}
  .primary-nav{
    position:fixed;left:0;right:0;bottom:0;top:auto;
    z-index:130;
    max-height:84vh;overflow-y:auto;
    padding:22px var(--pad) 30px;
    background:linear-gradient(180deg,var(--ink-2) 0%,var(--night) 100%);
    border-top:1px solid rgba(43,228,197,.4);
    box-shadow:0 -20px 60px rgba(4,16,31,.6);
    transform:translateY(102%);
    transition:transform .26s var(--ease);
  }
  .site-header[data-open="true"] .primary-nav{transform:translateY(0)}
  .site-header[data-open="true"]::after{
    content:"";position:fixed;inset:0;z-index:100;
    background:rgba(4,16,31,.62);
    -webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);
  }
  .primary-nav__head{
    display:block;
    font-family:var(--font-data);
    font-size:11px;letter-spacing:.28em;
    color:var(--cyan);
    margin-bottom:14px;
  }
  .primary-nav__list{display:flex;flex-direction:column;align-items:stretch;gap:0}
  .primary-nav__item{border-bottom:1px solid rgba(244,235,221,.1)}
  .nav-link{display:block;width:100%;padding:14px 0;font-size:20px;letter-spacing:.04em}
  .nav-link::after{display:none}
  .nav-link[aria-current="page"]{color:var(--cyan)}
  .primary-nav__cta{display:inline-flex;width:100%;margin-top:20px}
  body.nav-open{overflow:hidden}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

@media (max-width:600px){
  .grid--12{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-cols{grid-template-columns:1fr;gap:22px}
  .footer-base{flex-direction:column;align-items:flex-start;gap:12px}
  .header-tag{display:none}
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .has-js [data-reveal]{opacity:1;transform:none}
  .btn:hover{transform:none}
  .footer-link:hover{transform:none}
}