*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button{font:inherit;color:inherit}
table{border-collapse:collapse}

:root{
  --deep:#061426;
  --navy:#0A2038;
  --console:#12395C;
  --coral:#FF6B4A;
  --coral-soft:#FFA58F;
  --coral-ink:#C1401F;
  --mint:#39F2CF;
  --mint-mist:#A8FFF0;
  --paper:#F1F6F5;
  --ink:#071019;
  --haze:#8FA6B8;
  --line:rgba(143,166,184,.26);
  --line-soft:rgba(143,166,184,.14);
  --font-display:'Barlow Condensed','Oswald','Noto Sans SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','Source Han Sans SC',system-ui,-apple-system,'Segoe UI','Microsoft YaHei',sans-serif;
  --font-mono:'IBM Plex Mono','Roboto Mono',ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --wrap:1180px;
  --gutter:clamp(16px,4.4vw,44px);
  --ease:cubic-bezier(.22,.68,.28,1);
  --t-fast:140ms;
  --t-mid:240ms;
}

body{
  background:var(--deep);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.7;
  -webkit-font-smoothing:antialiased;
  text-wrap:pretty;
  overflow-x:hidden;
}
h1,h2,h3{text-wrap:balance;line-height:1.15}
a{color:var(--mint);text-decoration:none}
strong{color:var(--paper)}

:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--mint);
  outline-offset:3px;
  border-radius:1px;
}
.panel :where(a,button,summary,[tabindex]):focus-visible{outline-color:var(--coral-ink)}

/* ---------- 布局工具 ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:-72px;left:14px;
  z-index:120;
  padding:11px 18px;
  background:var(--mint);
  color:var(--deep);
  font-size:13px;font-weight:700;letter-spacing:.06em;
  border-radius:2px;
  transition:top var(--t-fast) var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- 页头 ---------- */
.site-header{
  position:relative;
  z-index:60;
  background:var(--deep);
  border-bottom:1px solid var(--console);
}

.status-strip{
  background:var(--navy);
  border-bottom:1px solid var(--line-soft);
}
.status-strip__inner{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:36px;
  padding-block:6px;
}
.status-strip__dot{
  flex:none;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(57,242,207,.16);
  animation:stripPulse 2.6s var(--ease) infinite;
}
@keyframes stripPulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(57,242,207,.16)}
  50%{opacity:.55;box-shadow:0 0 0 5px rgba(57,242,207,.04)}
}
.status-strip__text{
  font-size:11.5px;
  letter-spacing:.1em;
  color:rgba(241,246,245,.82);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}
.status-strip__link{
  margin-left:auto;
  flex:none;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--coral-soft);
  border-bottom:1px solid transparent;
  padding-bottom:1px;
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.status-strip__link:hover{color:var(--coral);border-bottom-color:var(--coral)}

.command-bar{background:var(--deep)}
.command-bar__inner{
  display:flex;
  align-items:center;
  gap:14px;
  padding-block:12px;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:none;
  text-decoration:none;
  color:var(--paper);
}
.brand__mark{
  display:grid;
  place-items:center;
  width:42px;height:42px;
  flex:none;
  background:var(--coral);
  color:var(--deep);
  font-family:var(--font-display);
  font-weight:700;
  font-size:19px;
  letter-spacing:.05em;
  clip-path:polygon(11% 0,100% 0,89% 100%,0 100%);
  transition:background-color var(--t-fast) var(--ease);
}
.brand:hover .brand__mark{background:var(--coral-soft)}
.brand__text{display:flex;flex-direction:column;line-height:1.14}
.brand__name{
  font-family:var(--font-display);
  font-weight:700;
  font-size:20px;
  letter-spacing:.07em;
}
.brand__line{
  font-size:10px;
  letter-spacing:.2em;
  color:var(--haze);
}
.brand--footer .brand__mark{width:36px;height:36px;font-size:16px}
.brand--footer .brand__name{font-size:22px}
.brand--footer .brand__line{font-size:10px;color:var(--haze)}

.quick-links{
  display:flex;
  align-items:center;
  gap:8px;
  margin-left:20px;
}
.quick-links__item{display:block}
.quick-links__link{
  display:block;
  padding:6px 12px;
  border:1px solid var(--line);
  border-radius:2px;
  font-size:12px;
  letter-spacing:.08em;
  color:#C7DAE5;
  background:rgba(18,57,92,.34);
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease);
}
.quick-links__link:hover{
  color:var(--mint-mist);
  border-color:rgba(57,242,207,.55);
  background:rgba(57,242,207,.08);
}

.command-bar__actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 18px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-body);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:transform var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),color var(--t-fast) var(--ease);
}
.btn--primary{background:var(--coral);color:var(--deep)}
.btn--primary:hover{background:var(--coral-soft);transform:translateY(-1px)}
.btn--ghost{background:transparent;color:var(--mint);border-color:rgba(57,242,207,.42)}
.btn--ghost:hover{background:rgba(57,242,207,.1);border-color:var(--mint);color:var(--mint-mist);transform:translateY(-1px)}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  padding:9px 12px;
  border:1px solid var(--line);
  border-radius:2px;
  background:var(--console);
  color:var(--paper);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
  transition:border-color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease);
}
.nav-toggle:hover{border-color:rgba(57,242,207,.5);background:#16456D}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;height:10px;
  flex:none;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;left:0;
  width:100%;height:2px;
  background:var(--mint);
  transition:transform var(--t-mid) var(--ease),top var(--t-mid) var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:8px}
.nav-toggle__label{white-space:nowrap}
.site-header[data-open] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}
.site-header[data-open] .nav-toggle{border-color:rgba(57,242,207,.6)}

.site-nav{
  background:var(--navy);
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--console);
}
.site-nav__inner{
  display:flex;
  align-items:center;
  gap:16px;
  min-height:50px;
}
.site-nav__label{
  flex:none;
  font-size:10.5px;
  letter-spacing:.22em;
  color:var(--haze);
}
.site-nav__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:2px;
  counter-reset:navidx;
}
.site-nav__item{counter-increment:navidx;display:block}
.site-nav__link{
  display:flex;
  align-items:baseline;
  gap:7px;
  padding:11px 14px;
  font-size:13.5px;
  font-weight:500;
  letter-spacing:.02em;
  color:#D3E2EC;
  border-radius:2px;
  transition:color var(--t-fast) var(--ease),background-color var(--t-fast) var(--ease);
}
.site-nav__link::before{
  content:counter(navidx,decimal-leading-zero);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.04em;
  color:var(--haze);
  transition:color var(--t-fast) var(--ease);
}
.site-nav__link:hover{color:var(--paper);background:rgba(18,57,92,.72)}
.site-nav__link:hover::before{color:var(--mint)}
.site-nav__link[aria-current="page"]{
  background:var(--mint);
  color:var(--deep);
  font-weight:700;
}
.site-nav__link[aria-current="page"]::before{color:rgba(10,32,56,.7)}
.site-nav__link[aria-current="page"]:hover{background:var(--mint-mist);color:var(--deep)}
.site-nav__meta{
  margin-left:auto;
  flex:none;
  display:inline-flex;
  align-items:center;
  gap:7px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--haze);
}
.site-nav__meta-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--mint);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  background:var(--navy);
  border-top:1px solid var(--console);
  color:var(--haze);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-10%;left:-14%;
  width:62%;height:130%;
  background:linear-gradient(180deg,rgba(18,57,92,.62),rgba(6,20,38,0) 72%);
  transform:skewX(-9deg);
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:2px;
  background:linear-gradient(90deg,var(--coral),rgba(255,107,74,0) 42%,rgba(57,242,207,0) 62%,var(--mint));
  opacity:.85;
}
.site-footer > .wrap{position:relative;z-index:1}

.site-footer__top{
  display:grid;
  grid-template-columns:minmax(0,.92fr) minmax(0,2.08fr);
  gap:clamp(28px,4.6vw,64px);
  padding-block:clamp(36px,5vw,60px) clamp(26px,3.4vw,40px);
}
.site-footer__lead{display:flex;flex-direction:column;align-items:flex-start;gap:12px}
.site-footer__summary{
  font-size:15px;
  line-height:1.72;
  color:#CBDBE6;
  max-width:34ch;
}
.site-footer__note{
  font-size:12.5px;
  line-height:1.75;
  color:var(--haze);
  max-width:36ch;
  padding-left:12px;
  border-left:2px solid rgba(255,107,74,.55);
}

.site-footer__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,38px);
}
.footer-col{min-width:0}
.footer-col__heading{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  font-family:var(--font-body);
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--paper);
}
.footer-col__heading::before{
  content:"";
  width:14px;height:2px;
  flex:none;
  background:var(--coral);
}
.footer-col__list{display:flex;flex-direction:column;gap:2px}
.footer-col__link{
  display:inline-block;
  padding:5px 0;
  font-size:13.5px;
  color:#B9CBD7;
  border-bottom:1px solid transparent;
  transition:color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease);
}
.footer-col__link:hover{color:var(--mint);border-bottom-color:rgba(57,242,207,.5)}

.footer-col--contact .footer-contact{
  font-style:normal;
  display:grid;
  gap:10px;
}
.footer-contact__row{
  display:grid;
  grid-template-columns:auto minmax(0,1fr);
  align-items:baseline;
  gap:10px;
  font-size:13px;
  line-height:1.7;
  color:#C6D7E2;
}
.footer-contact__key{
  font-size:10px;
  letter-spacing:.16em;
  color:var(--mint);
  border:1px solid rgba(57,242,207,.34);
  border-radius:2px;
  padding:1px 6px;
  white-space:nowrap;
}
.footer-contact__val{overflow-wrap:anywhere}

.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:18px 28px;
  border-top:1px solid var(--line);
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.05em;
  color:var(--haze);
}
.site-footer__copy,
.site-footer__icp,
.site-footer__stamp{white-space:nowrap}
.site-footer__icp{color:#A9BECD}

/* ---------- 通用内容组件 ---------- */
.label{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--mint);
}
.label::before{content:"";width:16px;height:2px;flex:none;background:currentColor}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  border:1px solid var(--line);
  border-radius:2px;
  background:rgba(18,57,92,.5);
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--mint-mist);
}

.panel{
  background:var(--paper);
  color:var(--ink);
  border:1px solid rgba(7,16,25,.14);
  border-top:3px solid var(--coral);
  border-radius:2px;
  padding:clamp(18px,3vw,34px);
}
.panel h2,.panel h3{color:var(--ink);font-family:var(--font-display);letter-spacing:.01em}
.panel a{color:var(--coral-ink);text-decoration:underline;text-underline-offset:3px}
.panel .label{color:var(--console)}
.panel .chip{
  background:#E2EDEB;
  border-color:rgba(7,16,25,.18);
  color:#12395C;
}

.breadcrumbs{
  font-size:12px;
  letter-spacing:.06em;
  color:var(--haze);
  margin-block:clamp(14px,2vw,22px);
}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs__item + .breadcrumbs__item::before{
  content:"/";
  color:rgba(143,166,184,.6);
  font-family:var(--font-mono);
}
.breadcrumbs__link{color:#C4D6E1;text-decoration:none;transition:color var(--t-fast) var(--ease)}
.breadcrumbs__link:hover{color:var(--mint)}
.breadcrumbs [aria-current="page"]{color:var(--mint-mist)}

.prose{max-width:72ch;font-size:16px;line-height:1.8;color:#D4E2EB}
.prose > * + *{margin-top:1.05em}
.prose h2,.prose h3{font-family:var(--font-display);letter-spacing:.01em;color:var(--paper)}
.prose h2{font-size:clamp(24px,3vw,34px);margin-top:1.8em}
.prose h3{font-size:clamp(19px,2.2vw,24px);margin-top:1.5em}
.prose ul,.prose ol{padding-left:1.25em;list-style:disc}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose a{color:var(--mint);text-decoration:underline;text-underline-offset:3px;text-decoration-color:rgba(57,242,207,.45)}
.prose a:hover{text-decoration-color:var(--mint)}
.panel .prose{color:#22303C}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(232px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(188px,1fr))}

.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:2px;
  aspect-ratio:16 / 9;
  isolation:isolate;
  background:
    radial-gradient(120% 92% at 14% 8%,rgba(57,242,207,.2),transparent 56%),
    radial-gradient(90% 80% at 88% 96%,rgba(255,107,74,.24),transparent 60%),
    linear-gradient(148deg,var(--console),var(--navy) 58%,var(--deep));
}
.media-frame img{
  width:100%;height:100%;
  object-fit:cover;
  display:block;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(6,20,38,0) 46%,rgba(6,20,38,.7));
  pointer-events:none;
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--paper{
  background:linear-gradient(160deg,#FFFFFF,#DCE9E7);
  border-color:rgba(7,16,25,.16);
}
.media-frame__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  z-index:1;
  padding:11px 14px;
  width:100%;
  font-size:11.5px;
  letter-spacing:.1em;
  color:#DCEAF1;
  background:rgba(6,20,38,.58);
  border-top:1px solid var(--line);
}

/* ---------- 滚动进度 ---------- */
.scroll-meter{
  position:fixed;
  top:0;left:0;right:0;
  height:3px;
  z-index:110;
  pointer-events:none;
  background:rgba(6,20,38,.35);
}
.scroll-meter__bar{
  display:block;
  width:0;height:100%;
  background:linear-gradient(90deg,var(--coral),var(--mint));
  transition:width 90ms linear;
}

/* ---------- 入场显现 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity var(--t-mid) var(--ease),transform var(--t-mid) var(--ease);
}
.js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .quick-links{margin-left:14px}
  .site-nav__meta{display:none}
}
@media (max-width:1000px){
  .quick-links{display:none}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex}
  .site-nav{display:none}
  .site-header[data-open] .site-nav{display:block}
  .site-nav__inner{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding-block:10px 18px;
  }
  .site-nav__label{padding-block:6px 8px;letter-spacing:.22em}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .site-nav__link{
    justify-content:flex-start;
    padding:12px 12px;
    border:1px solid transparent;
    font-size:14px;
  }
  .site-nav__link:hover{border-color:var(--line)}
  .site-nav__meta{
    display:inline-flex;
    margin:14px 0 0;
    padding-top:14px;
    border-top:1px solid var(--line);
  }
  .site-footer__top{grid-template-columns:minmax(0,1fr);gap:32px}
  .site-footer__summary,
  .site-footer__note{max-width:52ch}
}
@media (max-width:760px){
  .command-bar__actions .btn--ghost{display:none}
  .status-strip__text{font-size:11px;letter-spacing:.06em}
  .site-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--contact{grid-column:1 / -1}
}
@media (max-width:560px){
  .command-bar__actions{display:none}
  .brand__mark{width:38px;height:38px;font-size:17px}
  .brand__name{font-size:18px}
  .brand__line{font-size:9px;letter-spacing:.16em}
  .status-strip__link{font-size:10.5px}
  .site-footer__base{
    font-size:11px;
    justify-content:flex-start;
    gap:6px 18px;
  }
  .site-footer__copy,.site-footer__icp,.site-footer__stamp{white-space:normal}
}
@media (max-width:380px){
  .nav-toggle__label{display:none}
  .nav-toggle{padding:9px 10px}
}

@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 [data-reveal],
  .js [data-reveal].is-revealed{opacity:1;transform:none;transition:none}
  .scroll-meter__bar{transition:none}
}