*,*::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,dl,dd,fieldset{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg,picture{max-width:100%}
button{font:inherit;color:inherit}
a{color:inherit}

:root{
  --night-900:#050B16;
  --night-800:#0A1526;
  --panel:#10213A;
  --line:#24405F;
  --cyan:#3DF5C0;
  --orange:#FF8A3D;
  --violet:#8E7CFF;
  --ice:#EDF5FF;
  --mist:#A4B5CB;
  --font-display:"Barlow Condensed","Oswald","Arial Narrow","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Noto Sans SC",monospace;
  --font-label:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","HarmonyOS Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --shell:1200px;
  --shell-wide:1440px;
  --gutter:clamp(16px,4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

body{
  background-color:var(--night-900);
  background-image:
    radial-gradient(900px 520px at 84% -10%,rgba(61,245,192,.10),transparent 70%),
    radial-gradient(760px 500px at 2% 4%,rgba(142,124,255,.09),transparent 72%);
  background-repeat:no-repeat;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:clamp(15.5px,1.02vw,17px);
  line-height:1.78;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
}
main{display:block}

h1,.h1,h2,.h2,h3,.h3,h4,.h4{
  font-family:var(--font-display);
  font-weight:800;
  letter-spacing:-.005em;
  line-height:1.02;
  color:var(--ice);
}
h1,.h1{font-size:clamp(40px,7.2vw,96px);line-height:.96}
h2,.h2{font-size:clamp(28px,4.2vw,56px);line-height:1.02}
h3,.h3{font-size:clamp(20px,2.2vw,30px);font-weight:700;line-height:1.16}
h4,.h4{font-size:clamp(17px,1.5vw,20px);font-weight:700;line-height:1.3;letter-spacing:.01em}
p{max-width:36em}
strong{font-weight:600;color:var(--ice)}

a:focus-visible,button:focus-visible,[tabindex]:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:2px;
}

.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter)}
.shell--wide{max-width:var(--shell-wide)}

.skip-link{
  position:absolute;left:var(--gutter);top:-64px;z-index:200;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 18px;background:var(--cyan);color:#04140f;
  font-family:var(--font-label);font-size:13px;font-weight:600;letter-spacing:.08em;
  text-decoration:none;transition:top .18s var(--ease);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
}
.skip-link:focus{top:10px}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(5,11,22,.95);
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(14px);
  backdrop-filter:blur(14px);
}
.header-utility{
  border-bottom:1px solid rgba(36,64,95,.7);
  background-image:linear-gradient(90deg,rgba(61,245,192,.10),rgba(5,11,22,0) 46%);
}
.header-utility__inner{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  min-height:56px;padding-block:8px;
}
.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:var(--ice)}
.brand__mark{
  flex:none;width:38px;height:38px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--cyan),#1FB697);
  color:#04140f;font-family:var(--font-display);font-weight:800;font-size:19px;line-height:1;
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.brand__text{display:flex;flex-direction:column;gap:1px}
.brand__name{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.07em;line-height:1.2}
.brand__tagline{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:var(--mist);line-height:1.4}
.brand--bar{display:none}

.utility-links{display:flex;align-items:center;gap:18px}
.utility-stamp{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;color:var(--mist);
  border:1px solid var(--line);padding:5px 10px;background:rgba(16,33,58,.6);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}
.utility-link{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-label);font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--ice);text-decoration:none;padding:5px 2px;
  border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease);
}
.utility-link__dot{
  width:7px;height:7px;background:var(--orange);
  clip-path:polygon(0 0,100% 0,100% 100%);
  animation:pulseDot 2.6s var(--ease) infinite;
}
.utility-link:hover,.utility-link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}
@keyframes pulseDot{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.45;transform:scale(.7)}}

.header-bar{position:relative}
.header-bar__inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  min-height:64px;padding-block:9px;
}
.site-nav{display:block;flex:1 1 auto}
.site-nav__list{display:flex;flex-wrap:wrap;align-items:center;gap:clamp(6px,1.5vw,26px)}
.site-nav__item{flex:none}
.site-nav__link{
  position:relative;display:inline-flex;align-items:baseline;gap:8px;
  padding:10px 3px;font-family:var(--font-label);font-size:15px;font-weight:600;letter-spacing:.04em;
  color:var(--mist);text-decoration:none;
  transition:color .16s var(--ease);
}
.site-nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--line);transition:color .16s var(--ease)}
.site-nav__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:2px;height:2px;
  background:var(--cyan);transition:right .2s var(--ease);
}
.site-nav__link:hover,.site-nav__link:focus-visible{color:var(--ice)}
.site-nav__link:hover::after,.site-nav__link:focus-visible::after{right:0}
.site-nav__link[aria-current="page"]{color:var(--cyan)}
.site-nav__link[aria-current="page"]::after{right:0;background:var(--cyan)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--cyan)}

.header-cta{flex:none}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  background:rgba(16,33,58,.7);border:1px solid var(--line);
  padding:9px 12px;color:var(--ice);cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%);
  transition:border-color .16s var(--ease),background-color .16s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:var(--cyan);transition:transform .22s var(--ease),opacity .18s var(--ease)}
.nav-toggle__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.18em;color:var(--mist)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);background:rgba(61,245,192,.12)}
.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(61,245,192,.12);pointer-events:none;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transition:width .12s linear;
}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border:1px solid transparent;background:transparent;
  font-family:var(--font-display);font-size:14px;font-weight:700;letter-spacing:.08em;
  color:var(--ice);text-decoration:none;cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.btn--primary{background:var(--orange);color:#0A1526}
.btn--primary:hover,.btn--primary:focus-visible{background:#FFA463;transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0)}
.btn--ghost{background:rgba(16,33,58,.55);border-color:var(--line);color:var(--ice)}
.btn--ghost:hover,.btn--ghost:focus-visible{border-color:var(--cyan);color:var(--cyan);background:rgba(61,245,192,.08)}

/* ---------- 文字与标签 ---------- */
.kicker{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--cyan);
}
.kicker::before{content:"";width:20px;height:2px;background:var(--cyan);flex:none}
.lede{font-size:clamp(15.5px,1.35vw,18.5px);line-height:1.8;color:var(--mist);max-width:34em}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;
  padding:4px 9px;border:1px solid var(--line);background:rgba(16,33,58,.7);color:var(--mist);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
}
.tag--cyan{color:var(--cyan);border-color:rgba(61,245,192,.45);background:rgba(61,245,192,.10)}
.tag--orange{color:var(--orange);border-color:rgba(255,138,61,.45);background:rgba(255,138,61,.10)}
.tag--violet{color:var(--violet);border-color:rgba(142,124,255,.45);background:rgba(142,124,255,.10)}

/* ---------- 面包屑 ---------- */
.breadcrumb{padding-block:14px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;color:var(--mist)}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--mist);text-decoration:none;transition:color .16s var(--ease)}
.breadcrumb__link:hover,.breadcrumb__link:focus-visible{color:var(--cyan)}
.breadcrumb__current{color:var(--ice)}

/* ---------- 区块与网格 ---------- */
.section{padding-block:clamp(36px,5.5vw,84px)}
.section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:clamp(18px,2.6vw,34px)}
.section__title{font-family:var(--font-display);font-weight:800;font-size:clamp(26px,3.4vw,44px);line-height:1.05}
.section__note{font-size:13px;color:var(--mist);max-width:30em;font-family:var(--font-mono);letter-spacing:.04em}

.grid{display:grid;gap:clamp(14px,2vw,28px);grid-template-columns:repeat(var(--cols,12),minmax(0,1fr))}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-12{grid-column:span 12}

.surface{background:var(--night-800)}
.surface--deep{background:#04080F}
.surface--panel{background:var(--panel)}
.panel{
  background:var(--panel);border:1px solid var(--line);
  padding:clamp(16px,2.4vw,28px);
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,0 100%);
}
.panel--notch{
  clip-path:polygon(0 0,calc(100% - 18px) 0,100% 18px,100% 100%,18px 100%,0 calc(100% - 18px));
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/9;border:1px solid var(--line);
  background-color:var(--panel);
  background-image:
    repeating-linear-gradient(135deg,rgba(36,64,95,.30) 0 2px,rgba(5,11,22,0) 2px 14px),
    linear-gradient(158deg,rgba(16,33,58,.95),#060D19);
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,0 100%);
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--square{aspect-ratio:1/1}
.media-frame--band{aspect-ratio:24/7}
.media-frame > img,.media-frame > picture > img{
  display:block;width:100%;height:100%;object-fit:cover;
}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 14px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;
  color:var(--mist);background:linear-gradient(180deg,rgba(4,8,15,0),rgba(4,8,15,.92));
}

/* ---------- 数据件 ---------- */
.stat{display:block}
.stat__value{display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(26px,3.6vw,46px);line-height:1;color:var(--cyan);letter-spacing:-.01em}
.stat__label{display:block;margin-top:8px;font-family:var(--font-label);font-size:12px;letter-spacing:.14em;color:var(--mist)}
.meter{display:block;height:8px;background:rgba(36,64,95,.55);overflow:hidden}
.meter__fill{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--cyan),var(--violet))}

/* ---------- 筛选胶囊 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 13px;border:1px solid var(--line);background:rgba(16,33,58,.65);
  color:var(--mist);font-family:var(--font-label);font-size:12.5px;font-weight:600;letter-spacing:.06em;
  cursor:pointer;text-decoration:none;
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.chip:hover{color:var(--ice);border-color:var(--cyan)}
.chip[aria-pressed="true"],.chip[aria-current="true"]{color:var(--cyan);border-color:var(--cyan);background:rgba(61,245,192,.12)}
.chip[disabled]{opacity:.4;cursor:not-allowed}

/* ---------- 折叠内容组 ---------- */
.accordion{display:grid;gap:10px}
.accordion__item{border:1px solid var(--line);background:rgba(16,33,58,.55)}
.accordion__trigger{
  display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%;
  padding:15px 18px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-family:var(--font-label);font-size:15px;font-weight:600;letter-spacing:.02em;color:var(--ice);
  transition:color .16s var(--ease),background-color .16s var(--ease);
}
.accordion__trigger:hover{background:rgba(61,245,192,.07);color:var(--cyan)}
.accordion__icon{
  flex:none;width:14px;height:14px;position:relative;
  transition:transform .25s var(--ease);
}
.accordion__icon::before,.accordion__icon::after{
  content:"";position:absolute;background:var(--cyan);
}
.accordion__icon::before{left:0;right:0;top:6px;height:2px}
.accordion__icon::after{top:0;bottom:0;left:6px;width:2px;transition:opacity .2s var(--ease)}
.accordion__trigger[aria-expanded="true"] .accordion__icon::after{opacity:0}
.accordion__panel{padding:0 18px 18px;color:var(--mist);font-size:14.5px;line-height:1.82}
.accordion__panel[hidden]{display:none}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;margin-top:clamp(44px,6.5vw,92px);
  background:linear-gradient(180deg,var(--night-800),#04080F 82%);
  border-top:1px solid var(--line);
}
.footer-pulse{
  height:8px;
  background-image:
    repeating-linear-gradient(118deg,rgba(5,11,22,.86) 0 3px,rgba(5,11,22,0) 3px 26px),
    linear-gradient(90deg,rgba(61,245,192,.95) 0 32%,rgba(142,124,255,.9) 32% 58%,rgba(255,138,61,.95) 58% 100%);
}
.footer-main{padding-block:clamp(34px,4.6vw,62px)}
.footer-grid{
  display:grid;gap:clamp(24px,3.4vw,48px);
  grid-template-columns:1.7fr 1fr 1fr 1.6fr;
}
.footer-brand{min-width:0}
.brand--footer{align-items:flex-start}
.brand--footer .brand__mark{width:44px;height:44px;font-size:22px}
.brand--footer .brand__name{font-size:21px}
.footer-brand__line{margin-top:16px;font-size:13.5px;line-height:1.85;color:var(--mist);max-width:30em}
.footer-brand__cta{margin-top:18px}
.footer-col{min-width:0}
.footer-col__title{
  font-family:var(--font-mono);font-size:11px;font-weight:600;letter-spacing:.2em;
  color:var(--cyan);text-transform:none;line-height:1.5;
  padding-bottom:10px;border-bottom:1px solid rgba(36,64,95,.8);
}
.footer-list{display:grid;gap:10px;margin-top:16px}
.footer-list__link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13.5px;color:var(--ice);text-decoration:none;
  transition:color .16s var(--ease);
}
.footer-list__link::before{
  content:"";width:6px;height:6px;flex:none;background:var(--line);
  clip-path:polygon(0 0,100% 100%,100% 0);
  transition:background-color .16s var(--ease);
}
.footer-list__link:hover,.footer-list__link:focus-visible{color:var(--cyan)}
.footer-list__link:hover::before,.footer-list__link:focus-visible::before{background:var(--cyan)}
.footer-contact{min-width:0}
.footer-contact__list{display:grid;gap:11px;margin-top:16px}
.footer-contact__row{display:grid;grid-template-columns:auto 1fr;gap:10px;align-items:baseline;font-size:13px}
.footer-contact__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;color:var(--mist);white-space:nowrap}
.footer-contact__value{color:var(--ice);overflow-wrap:anywhere}
.footer-contact__note{margin-top:14px;font-size:12px;line-height:1.8;color:var(--mist);max-width:40em}
.footer-legal{border-top:1px solid var(--line);background:rgba(5,11,22,.65);padding-block:16px}
.footer-legal__inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 26px;
  font-size:12px;color:var(--mist);
}
.footer-legal__icp{font-family:var(--font-mono);letter-spacing:.04em}
.footer-legal__copy{font-family:var(--font-mono);letter-spacing:.06em}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal__link{
  color:var(--mist);text-decoration:none;border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-legal__link:hover,.footer-legal__link:focus-visible{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- 入场显现 ---------- */
.js-reveal [data-reveal]{opacity:0;transform:translateY(18px)}
.js-reveal [data-reveal].is-revealed{
  opacity:1;transform:none;
  transition:opacity .62s var(--ease),transform .62s var(--ease);
}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1fr}
  .footer-contact{grid-column:1 / -1}
  .footer-contact__list{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 24px}
}
@media (max-width:960px){
  .header-utility{display:none}
  .brand--bar{display:inline-flex;order:1}
  .header-bar__inner{justify-content:space-between;min-height:60px;gap:10px}
  .nav-toggle{display:inline-flex;order:3}
  .header-cta{order:2;padding:10px 15px;font-size:13px}
  .site-nav{
    position:absolute;top:100%;left:0;right:0;z-index:90;
    display:none;flex:initial;margin:0;
    padding:10px var(--gutter) 20px;
    background:var(--night-800);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    max-height:calc(100vh - 120px);
    overflow-y:auto;
  }
  .site-nav[data-open]{display:block}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__item{flex:none}
  .site-nav__link{
    width:100%;justify-content:flex-start;padding:14px 4px;font-size:16px;
    border-bottom:1px solid rgba(36,64,95,.5);
  }
  .site-nav__link::after{bottom:-1px}
  .site-nav__link[aria-current="page"]{background-image:linear-gradient(90deg,rgba(61,245,192,.12),rgba(61,245,192,0) 70%)}
  .grid{--cols:6}
  .span-3,.span-4,.span-5{grid-column:span 3}
  .span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 6}
}
@media (max-width:640px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px 20px}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
  .footer-contact__list{grid-template-columns:1fr}
  .footer-legal__inner{justify-content:flex-start;gap:8px 18px}
  .grid{--cols:1;gap:14px}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 1}
  .media-frame{clip-path:polygon(0 0,calc(100% - 14px) 0,100% 14px,100% 100%,0 100%)}
  .brand--bar .brand__mark{width:32px;height:32px;font-size:16px}
  .brand--bar .brand__name{font-size:15px}
}
@media (max-width:400px){
  .header-cta{padding:9px 12px;font-size:12px}
  .nav-toggle{padding:8px 9px}
  .nav-toggle__label{display:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-reveal [data-reveal]{opacity:1;transform:none}
  .btn--primary:hover,.btn--ghost:hover{transform:none}
}