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

:root{
  --ink:#05100D;
  --panel:#0B1F1A;
  --raise:#16332B;
  --line:#2B4A41;
  --signal:#1FE0C2;
  --signal-soft:#8FF8E6;
  --amber:#F4A63A;
  --wine:#7A2344;
  --indigo:#1C2440;
  --indigo-deep:#10182E;
  --paper:#F2F7F3;
  --mist:#9AB0A8;
  --font-display:'Barlow Condensed','Noto Sans SC','PingFang SC',sans-serif;
  --font-num:'IBM Plex Mono','JetBrains Mono','SFMono-Regular',monospace;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --radius-card:16px;
  --gutter:clamp(16px,4vw,56px);
  --max:1320px;
  --edge:1px solid var(--line);
  --shadow-soft:0 22px 54px -34px rgba(0,0,0,.92);
  --t-fast:.16s ease;
  --t-base:.18s ease;
}

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

body{
  margin:0;
  min-height:100vh;
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

img,svg{display:block;max-width:100%}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;letter-spacing:.02em;line-height:1.08;margin:0}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
a{color:var(--signal);text-decoration:none}
button{font:inherit;color:inherit}
::selection{background:var(--signal);color:#04120F}

:focus-visible{
  outline:2px solid var(--signal-soft);
  outline-offset:3px;
  border-radius:8px;
}

#main-content{scroll-margin-top:clamp(96px,14vw,150px)}

/* ---------- 通用容器与排版组件 ---------- */

.shell{
  width:min(var(--max),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-num);
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--signal);
}
.eyebrow::before{content:"";width:20px;height:1px;background:var(--signal);flex:0 0 auto}

.num{
  font-family:var(--font-num);
  font-weight:600;
  letter-spacing:-.01em;
  font-variant-numeric:tabular-nums;
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--mist);
  white-space:nowrap;
}
.tag--signal{color:var(--signal);border-color:rgba(31,224,194,.42);background:rgba(31,224,194,.08)}
.tag--amber{color:var(--amber);border-color:rgba(244,166,58,.42);background:rgba(244,166,58,.08)}

.panel{
  background:var(--panel);
  border:var(--edge);
  border-radius:var(--radius-card);
  padding:clamp(18px,2.4vw,28px);
}
.panel--raise{background:var(--raise)}

.rule{height:1px;border:0;margin:0;background:var(--line)}

/* ---------- 按钮 ---------- */

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  border-radius:999px;
  border:1px solid transparent;
  background:transparent;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:600;
  letter-spacing:.02em;
  line-height:1.2;
  color:var(--paper);
  cursor:pointer;
  white-space:nowrap;
  transition:background-color var(--t-base),border-color var(--t-base),color var(--t-fast),transform var(--t-base);
}
.btn:hover{transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.btn--signal{background:var(--signal);border-color:var(--signal);color:#04120F}
.btn--signal:hover{background:var(--signal-soft);border-color:var(--signal-soft);color:#04120F}
.btn--ghost{border-color:var(--line);color:var(--paper)}
.btn--ghost:hover{border-color:var(--signal);color:var(--signal);background:rgba(31,224,194,.07)}
.btn--sm{padding:7px 14px;font-size:13px}

/* ---------- 面包屑 ---------- */

.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 10px;
  padding:clamp(18px,3vw,34px) 0;
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
}
.breadcrumbs__link{color:var(--mist);transition:color var(--t-fast)}
.breadcrumbs__link:hover{color:var(--signal)}
.breadcrumbs__sep{opacity:.45}
.breadcrumbs__current{color:var(--paper)}

/* ---------- 响应式图片容器（页面阶段使用） ---------- */

.media{
  position:relative;
  width:100%;
  aspect-ratio:16/10;
  overflow:hidden;
  border-radius:var(--radius-card);
  border:var(--edge);
  background:
    radial-gradient(circle at 26% 18%,rgba(31,224,194,.12),transparent 58%),
    linear-gradient(158deg,var(--panel),var(--ink));
}
.media img{width:100%;height:100%;object-fit:cover;display:block}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media__grid{
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(to right,rgba(43,74,65,.5) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(43,74,65,.5) 1px,transparent 1px);
  background-size:clamp(22px,4vw,46px) clamp(22px,4vw,46px);
}

/* ---------- 跳转链接 ---------- */

.skip-link{
  position:absolute;
  left:50%;
  top:6px;
  z-index:200;
  transform:translate(-50%,-180%);
  padding:10px 20px;
  border-radius:999px;
  background:var(--signal);
  color:#04120F;
  font-size:14px;
  font-weight:700;
  letter-spacing:.02em;
  box-shadow:var(--shadow-soft);
  transition:transform var(--t-base);
}
.skip-link:focus-visible{transform:translate(-50%,0)}

/* ---------- 头部：悬浮胶囊浮岛 ---------- */

.site-header{
  position:sticky;
  top:0;
  z-index:120;
  padding:16px 0 0;
}

.header-pill{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(8px,1.6vw,24px);
  width:min(var(--max),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding:10px 12px 10px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(11,31,26,.8);
  -webkit-backdrop-filter:blur(16px) saturate(150%);
  backdrop-filter:blur(16px) saturate(150%);
  box-shadow:0 22px 54px -38px #000;
  transition:padding var(--t-base),background-color var(--t-base),box-shadow var(--t-base);
}
.site-header[data-compact] .header-pill{
  padding:6px 10px 6px 12px;
  background:rgba(11,31,26,.95);
  box-shadow:0 16px 40px -30px #000;
}

.brand{
  display:flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
  color:var(--paper);
  transition:color var(--t-fast);
}
.brand:hover{color:var(--paper)}
.brand__glyph{
  position:relative;
  width:32px;
  height:32px;
  flex:0 0 auto;
  border:1px solid rgba(31,224,194,.55);
  border-radius:9px;
  background:
    linear-gradient(to right,transparent 48.6%,rgba(31,224,194,.4) 48.6%,rgba(31,224,194,.4) 51.4%,transparent 51.4%),
    linear-gradient(to bottom,transparent 48.6%,rgba(31,224,194,.4) 48.6%,rgba(31,224,194,.4) 51.4%,transparent 51.4%),
    var(--raise);
}
.brand__glyph::after{
  content:"";
  position:absolute;
  right:5px;
  bottom:5px;
  width:5px;
  height:5px;
  border-radius:50%;
  background:var(--amber);
}
.brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand__name{
  font-family:var(--font-display);
  font-size:18px;
  font-weight:700;
  letter-spacing:.03em;
  line-height:1.1;
  color:var(--paper);
}
.brand__tag{
  display:block;
  max-height:18px;
  overflow:hidden;
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.16em;
  line-height:1.5;
  color:var(--mist);
  transition:opacity var(--t-base),max-height var(--t-base);
}
.site-header[data-compact] .brand__tag{opacity:0;max-height:0}

.site-nav{
  display:flex;
  align-items:center;
  gap:2px;
  margin-inline:auto;
  min-width:0;
}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:8px 12px;
  border-radius:999px;
  color:var(--paper);
  font-size:14px;
  letter-spacing:.02em;
  white-space:nowrap;
  transition:color var(--t-fast),background-color var(--t-base),box-shadow var(--t-base);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:4px;
  height:1px;
  background:var(--signal);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t-fast);
}
.site-nav__link:hover{color:var(--signal-soft)}
.site-nav__link:hover::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{
  color:var(--signal);
  background:rgba(31,224,194,.1);
  box-shadow:inset 0 0 0 1px rgba(31,224,194,.45);
}
.site-nav__link[aria-current="page"]::after{transform:scaleX(0)}

.header-tools{
  display:flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
}
.header-cta{white-space:nowrap}
.header-cta::before{
  content:"";
  width:6px;
  height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:#04120F;
  opacity:.62;
}
.header-utility{white-space:nowrap}

.nav-toggle{
  display:none;
  place-items:center;
  width:42px;
  height:42px;
  padding:0;
  flex:0 0 auto;
  border:1px solid var(--line);
  border-radius:50%;
  background:rgba(22,51,43,.65);
  color:var(--paper);
  cursor:pointer;
  transition:border-color var(--t-base),background-color var(--t-base);
}
.nav-toggle:hover{border-color:var(--signal);background:rgba(31,224,194,.1)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--t-base),opacity var(--t-base);
}
.nav-toggle__bars::before{top:-5px}
.nav-toggle__bars::after{top:5px}
.site-header[data-open] .nav-toggle__bars{background:transparent}
.site-header[data-open] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}

.scroll-meter{
  position:absolute;
  left:22px;
  right:22px;
  bottom:0;
  height:2px;
  overflow:hidden;
  border-radius:0 0 999px 999px;
  background:rgba(43,74,65,.55);
  pointer-events:none;
}
.scroll-meter__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:left center;
  background:linear-gradient(90deg,var(--signal),var(--amber));
  transition:transform .1s linear;
}

/* ---------- 页脚：靛紫收束区 ---------- */

.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,150px);
  background:linear-gradient(170deg,var(--indigo),var(--indigo-deep));
  border-top:1px solid rgba(31,224,194,.35);
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:repeating-linear-gradient(90deg,rgba(43,74,65,.9) 0 1px,transparent 1px 48px);
  pointer-events:none;
}

.footer-shell{
  width:min(var(--max),calc(100% - var(--gutter) * 2));
  margin-inline:auto;
  padding:clamp(40px,6vw,84px) 0 clamp(22px,3vw,38px);
  display:grid;
  grid-template-columns:minmax(0,1.15fr) minmax(0,1fr);
  gap:clamp(28px,5vw,72px);
}

.footer-lead{min-width:0}
.footer-mark{
  display:inline-block;
  font-family:var(--font-display);
  font-size:clamp(42px,8.4vw,110px);
  font-weight:700;
  letter-spacing:.01em;
  line-height:.88;
  color:var(--paper);
  transition:color var(--t-base);
}
.footer-mark:hover{color:var(--signal)}
.footer-line{
  margin:14px 0 0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--mist);
}
.footer-axis{
  display:flex;
  align-items:center;
  gap:10px;
  margin:18px 0 0;
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--mist);
}
.footer-axis__bar{
  display:block;
  width:clamp(26px,8vw,84px);
  height:1px;
  flex:0 0 auto;
  background:linear-gradient(90deg,var(--signal),transparent);
}

.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,3vw,40px);
  align-content:start;
}
.footer-col{min-width:0}
.footer-col__title{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px;
  margin:0 0 14px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(242,247,243,.14);
  font-family:var(--font-num);
  font-size:11px;
  font-weight:600;
  letter-spacing:.22em;
  color:var(--mist);
}
.footer-col__title::after{
  content:"";
  width:6px;
  height:6px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--amber);
  opacity:.85;
}
.footer-col__list{display:flex;flex-direction:column;gap:2px}
.footer-link{
  position:relative;
  display:inline-block;
  padding:5px 0;
  font-size:14px;
  color:var(--paper);
  transition:color var(--t-fast);
}
.footer-link::after{
  content:"";
  position:absolute;
  left:0;
  bottom:2px;
  width:100%;
  height:1px;
  background:var(--signal);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--t-fast);
}
.footer-link:hover{color:var(--signal)}
.footer-link:hover::after{transform:scaleX(1)}

.footer-contact{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  gap:10px 34px;
  margin-top:6px;
  padding-top:22px;
  border-top:1px solid rgba(242,247,243,.14);
  font-size:13px;
  color:var(--mist);
}
.footer-contact__item{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin:0;
  min-width:0;
}
.footer-contact__key{
  flex:0 0 auto;
  padding:2px 9px;
  border:1px solid rgba(31,224,194,.35);
  border-radius:999px;
  font-family:var(--font-num);
  font-size:10px;
  letter-spacing:.18em;
  color:var(--signal);
}

.footer-base{
  grid-column:1 / -1;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 26px;
  padding-top:18px;
  border-top:1px solid rgba(242,247,243,.08);
  font-family:var(--font-num);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--mist);
}
.footer-base__line{margin:0}
.footer-icp{color:var(--signa-soft,#8FF8E6)}
.footer-base__note{color:rgba(154,176,168,.82)}

/* ---------- 平板 ---------- */

@media (max-width:1080px){
  .site-header{padding-top:10px}
  .header-pill{
    flex-wrap:wrap;
    border-radius:22px;
    padding:10px 12px;
    row-gap:10px;
  }
  .site-header[data-compact] .header-pill{padding:8px 12px}
  .brand{order:1;flex:0 1 auto}
  .brand__tag{display:none}
  .nav-toggle{display:inline-grid;order:2;margin-left:auto}
  .header-tools{order:3;flex:1 1 100%;justify-content:flex-start;gap:8px}
  .site-nav{
    order:4;
    flex:1 1 100%;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    margin:0;
    padding-top:8px;
    border-top:1px solid var(--line);
  }
  .site-header[data-open] .site-nav{display:flex}
  .site-nav__link{padding:12px 14px;border-radius:12px;font-size:15px}
  .site-nav__link::after{display:none}
  .scroll-meter{left:16px;right:16px}
  .footer-shell{grid-template-columns:1fr;gap:clamp(26px,5vw,44px)}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}

/* ---------- 手机 ---------- */

@media (max-width:620px){
  .header-pill{border-radius:20px;padding:10px;row-gap:8px}
  .brand__glyph{width:28px;height:28px;border-radius:8px}
  .brand__name{font-size:16px}
  .header-tools .btn{flex:1 1 auto;padding:9px 12px;font-size:12.5px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 18px}
  .footer-mark{font-size:clamp(40px,15vw,64px)}
  .footer-contact{flex-direction:column;gap:10px}
  .footer-base{font-size:10px;letter-spacing:.06em}
}

@media (max-width:380px){
  .footer-cols{grid-template-columns:1fr}
  .header-tools{flex-wrap:wrap}
}

/* ---------- 动效偏好 ---------- */

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