*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;background:var(--ink-900)}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,figcaption,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}

:root{
  --ink-900:#071523;
  --ink-800:#0A1B2E;
  --ink-700:#0D2138;
  --line:#1B3A57;
  --line-soft:rgba(27,58,87,.62);
  --fog:#E8F3FF;
  --fog-dim:#A9C4DE;
  --cyan:#2DE2E6;
  --gold:#FF9F1C;
  --magenta:#FF3D7F;
  --green:#3DDC97;
  --slate:#6B8CAE;
  --maxw:1320px;
  --gutter:clamp(16px,4vw,44px);
  --rhythm:clamp(56px,8vw,104px);
  --font-display:"Oswald","Arial Narrow","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Helvetica Neue","Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,"Courier New",monospace;
  --ease:cubic-bezier(.22,.61,.36,1);
}

body{
  background-color:var(--ink-900);
  background-image:
    radial-gradient(900px 520px at 8% -8%,rgba(45,226,230,.12),transparent 62%),
    radial-gradient(760px 460px at 96% 2%,rgba(255,159,28,.09),transparent 60%),
    radial-gradient(720px 440px at 50% 108%,rgba(255,61,127,.075),transparent 66%);
  background-repeat:no-repeat;
  color:var(--fog);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  min-height:100vh;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  opacity:0;
  transition:opacity .25s var(--ease);
  background-image:repeating-linear-gradient(90deg,rgba(45,226,230,.16) 0 1px,transparent 1px 8.3333%);
}
.is-grid body::before{opacity:1}
.is-compact{--rhythm:clamp(32px,4vw,56px)}
.is-contrast{--line:#2F6E9E;--line-soft:rgba(47,110,158,.82)}
body.is-locked{overflow:hidden}

::selection{background:rgba(45,226,230,.32);color:var(--fog)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
:focus:not(:focus-visible){outline:none}
#main-content:focus{outline:none}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 骨架 ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:var(--rhythm);border-top:1px solid var(--line-soft)}
.section__head{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px 24px;margin-bottom:clamp(20px,3vw,36px)}
.eyebrow{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";display:block;width:22px;height:1px;background:var(--cyan)}
.display{font-family:var(--font-display);font-weight:700;font-size:clamp(40px,7vw,96px);line-height:.94;letter-spacing:-.02em;color:var(--fog);text-wrap:balance}
.display--outline{color:transparent;-webkit-text-stroke:1px rgba(45,226,230,.45)}
.lede{font-size:clamp(15px,1.4vw,17px);line-height:1.8;color:var(--fog-dim);max-width:42em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:9px 16px;border:1px solid var(--line);border-radius:0;
  background:transparent;color:var(--fog);
  font-family:var(--font-body);font-size:13px;letter-spacing:.08em;line-height:1.2;
  cursor:pointer;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn--solid{background:var(--gold);border-color:var(--gold);color:#1A1000;font-weight:600}
.btn--solid:hover{background:#FFB84D;border-color:#FFB84D}
.btn--ghost{color:var(--cyan);border-color:rgba(45,226,230,.45)}
.btn--ghost:hover{background:rgba(45,226,230,.12);border-color:var(--cyan);color:var(--fog)}
.btn[aria-expanded="true"]{background:rgba(45,226,230,.16);border-color:var(--cyan);color:var(--fog)}
.btn[data-state="ok"]{background:rgba(61,220,151,.18);border-color:var(--green);color:var(--green)}
.btn[data-state="fail"]{background:rgba(255,61,127,.16);border-color:var(--magenta);color:var(--magenta)}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--slate)}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--slate);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.breadcrumb__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- 栅格与卡片 ---------- */
.grid{display:grid;gap:clamp(16px,2vw,28px)}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--halves{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--thirds{grid-template-columns:repeat(3,minmax(0,1fr))}
@media(max-width:960px){.grid--split,.grid--thirds{grid-template-columns:minmax(0,1fr)}}
@media(max-width:720px){.grid--halves{grid-template-columns:minmax(0,1fr)}}

.panel{
  position:relative;
  padding:clamp(18px,2.2vw,28px);
  border:1px solid var(--line);
  background:linear-gradient(160deg,rgba(13,33,56,.94),rgba(10,27,46,.72));
  transition:border-color .22s var(--ease),background .22s var(--ease);
}
.panel:hover,.panel:focus-within{border-color:var(--cyan);background:linear-gradient(160deg,rgba(15,40,66,.96),rgba(10,27,46,.82))}
.panel__title{font-family:var(--font-display);font-weight:600;font-size:clamp(18px,2vw,24px);line-height:1.2;letter-spacing:-.01em;margin-bottom:8px}
.panel__meta{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate)}

.rule-line{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--cyan),rgba(45,226,230,0))}

/* ---------- 图片容器 ---------- */
.media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/9;border:1px solid var(--line);
  background-color:var(--ink-700);
  background-image:linear-gradient(135deg,rgba(45,226,230,.12),rgba(255,159,28,.07) 55%,rgba(255,61,127,.06));
}
.media__img{width:100%;height:100%;object-fit:cover}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--fog-dim);background:linear-gradient(180deg,rgba(7,21,35,0),rgba(7,21,35,.88));
}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}

/* ---------- 标签与数字 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border:1px solid var(--line);background:rgba(13,33,56,.72);font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--fog-dim)}
.tag--cyan{color:var(--cyan);border-color:rgba(45,226,230,.45)}
.tag--gold{color:var(--gold);border-color:rgba(255,159,28,.45)}
.tag--magenta{color:var(--magenta);border-color:rgba(255,61,127,.45)}
.numeric{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;color:var(--fog)}

/* ---------- 头部 ---------- */
.skip-link{
  position:absolute;left:8px;top:-72px;z-index:120;
  padding:10px 18px;background:var(--cyan);color:#04121C;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:8px}

.site-header{
  position:sticky;top:0;z-index:60;width:100%;
  background:linear-gradient(180deg,rgba(7,21,35,.99),rgba(10,27,46,.96));
  border-bottom:1px solid var(--line);
  color:var(--fog);
}
.site-header[data-open]{border-bottom-color:var(--cyan)}

.site-header__strip{
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  width:100%;max-width:var(--maxw);margin-inline:auto;padding:6px var(--gutter);
  border-bottom:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate);
}
.site-header__tagline{display:inline-flex;align-items:center;gap:0;color:var(--slate);white-space:nowrap}
.site-header__dot{width:6px;height:6px;margin-right:8px;background:var(--cyan);box-shadow:0 0 8px rgba(45,226,230,.9)}
.site-header__status{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.status-pill{display:inline-flex;align-items:center;gap:8px;padding:3px 9px;border:1px solid var(--line);background:rgba(13,33,56,.7)}
.status-pill__key{color:var(--slate)}
.status-pill__val{font-family:var(--font-mono);color:var(--cyan);letter-spacing:.1em}
.status-pill--version .status-pill__val{color:var(--gold)}

.site-header__bar{
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  width:100%;max-width:var(--maxw);margin-inline:auto;padding:10px var(--gutter);
}

.brand{display:flex;align-items:stretch;gap:10px;flex:0 0 auto;min-width:0}
.brand__rail{display:block;width:4px;background:linear-gradient(180deg,var(--cyan),var(--gold))}
.brand__body{display:flex;flex-direction:column;justify-content:center;line-height:1.15}
.brand__name{font-family:var(--font-display);font-weight:700;font-size:18px;letter-spacing:.02em;color:var(--fog)}
.brand__sub{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;color:var(--slate)}

.nav{flex:1 1 auto;min-width:0}
.nav__list{display:flex;align-items:center;justify-content:flex-start;gap:2px;flex-wrap:nowrap}
.nav__item{min-width:0}
.nav__link{
  display:flex;align-items:baseline;gap:6px;padding:8px 10px;
  border:1px solid transparent;border-radius:0;
  color:var(--fog-dim);font-size:13px;letter-spacing:.06em;white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease);
}
.nav__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--slate);transition:color .2s var(--ease)}
.nav__link:hover{color:var(--fog);border-color:var(--line);background:rgba(13,33,56,.85)}
.nav__link:hover .nav__idx{color:var(--cyan)}
.nav__link[aria-current="page"]{background:var(--cyan);border-color:var(--cyan);color:#04121C;font-weight:600}
.nav__link[aria-current="page"] .nav__idx{color:rgba(4,18,28,.62)}

.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:9px 12px;border:1px solid var(--line);border-radius:0;background:transparent;
  color:var(--fog);font-size:12px;letter-spacing:.08em;cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:flex;flex-direction:column;justify-content:center;gap:3px;width:18px;height:12px}
.nav-toggle__bar{display:block;height:2px;background:currentColor;transition:transform .22s var(--ease),opacity .22s var(--ease)}
.nav-toggle__text{white-space:nowrap}
.site-header[data-open] .nav-toggle{border-color:var(--cyan);color:var(--cyan)}
.site-header[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.scroll-progress{height:2px;background:rgba(27,58,87,.55);overflow:hidden}
.scroll-progress__bar{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--cyan),var(--gold) 62%,var(--magenta));transition:width .12s linear}

/* ---------- 设置抽屉 ---------- */
.drawer-scrim{
  position:fixed;inset:0;z-index:80;
  background:rgba(4,12,20,.68);
  opacity:0;visibility:hidden;pointer-events:none;
  transition:opacity .28s var(--ease),visibility .28s var(--ease);
}
.drawer-scrim[data-open]{opacity:1;visibility:visible;pointer-events:auto}

.drawer{
  position:fixed;top:0;right:0;bottom:0;z-index:90;
  width:min(360px,92vw);padding:24px 22px 32px;
  overflow-y:auto;
  background:linear-gradient(180deg,var(--ink-800),var(--ink-900));
  border-left:1px solid var(--cyan);
  transform:translateX(102%);visibility:hidden;
  transition:transform .32s var(--ease),visibility .32s var(--ease);
}
.drawer[data-open]{transform:none;visibility:visible}
.drawer__head{position:relative;padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.drawer__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.drawer__title{font-family:var(--font-display);font-weight:600;font-size:24px;letter-spacing:-.01em;margin-top:6px;color:var(--fog)}
.drawer__close{
  position:absolute;top:0;right:0;
  width:32px;height:32px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:0;background:transparent;color:var(--fog-dim);
  font-size:14px;cursor:pointer;transition:border-color .2s var(--ease),color .2s var(--ease);
}
.drawer__close:hover{border-color:var(--cyan);color:var(--cyan)}
.drawer__group{padding-top:20px}
.drawer__group-title{font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--slate);margin-bottom:4px}
.drawer__list{display:grid;gap:2px;margin-top:6px}
.drawer__link{display:block;padding:9px 0;color:var(--fog-dim);font-size:14px;border-bottom:1px solid var(--line-soft);transition:color .2s var(--ease),padding-left .2s var(--ease)}
.drawer__link:hover{color:var(--cyan);padding-left:6px}
.drawer__note{margin-top:24px;padding-top:14px;border-top:1px solid var(--line-soft);font-size:12px;line-height:1.7;color:var(--slate)}

.switch{
  display:flex;align-items:center;justify-content:space-between;gap:14px;width:100%;
  padding:12px 0;border:0;border-bottom:1px solid var(--line-soft);background:none;
  color:var(--fog);font-size:14px;text-align:left;cursor:pointer;
}
.switch__label{flex:1 1 auto}
.switch__track{position:relative;flex:0 0 auto;width:38px;height:20px;border:1px solid var(--line);background:rgba(13,33,56,.9);transition:border-color .2s var(--ease),background .2s var(--ease)}
.switch__thumb{position:absolute;top:2px;left:2px;width:14px;height:14px;background:var(--slate);transition:transform .2s var(--ease),background .2s var(--ease)}
.switch[aria-checked="true"] .switch__track{border-color:var(--cyan);background:rgba(45,226,230,.16)}
.switch[aria-checked="true"] .switch__thumb{transform:translateX(18px);background:var(--cyan)}
.switch:hover .switch__track{border-color:var(--cyan)}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:var(--rhythm);
  border-top:1px solid var(--line);
  background:
    radial-gradient(620px 320px at 10% 0%,rgba(45,226,230,.10),transparent 70%),
    linear-gradient(180deg,var(--ink-800),#050E18 78%);
  color:var(--fog-dim);font-size:14px;
}
.footer__top{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:20px;
  padding-block:clamp(32px,5vw,56px) clamp(20px,3vw,32px);
  border-bottom:1px solid var(--line-soft);
}
.footer__brand{min-width:0}
.footer__brand-line{font-family:var(--font-display);font-weight:700;font-size:clamp(20px,2.6vw,32px);line-height:1.15;letter-spacing:-.01em;color:var(--fog)}
.footer__brand-sub{margin-top:10px;max-width:40ch;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--slate)}
.footer__cta{flex:0 0 auto}
.footer__grid{display:grid;grid-template-columns:1.1fr .8fr 1.6fr;gap:clamp(20px,3vw,44px);padding-block:clamp(28px,4vw,48px)}
.footer__col{min-width:0}
.footer__col-title{
  margin-bottom:14px;padding-bottom:10px;border-bottom:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);
}
.footer__col--contact .footer__col-title{color:var(--gold);border-bottom-color:rgba(255,159,28,.38)}
.footer__list{display:grid;gap:8px}
.footer__list--contact{gap:12px}
.footer__link{display:inline-block;color:var(--fog-dim);font-size:14px;border-bottom:1px solid transparent;transition:color .18s var(--ease),border-color .18s var(--ease)}
.footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__contact-item{display:grid;grid-template-columns:42px minmax(0,1fr);gap:10px;align-items:baseline}
.footer__contact-key{font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--slate)}
.footer__contact-value{color:var(--fog);font-size:14px;word-break:break-word}
.footer__bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  padding-block:18px 28px;border-top:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--slate);
}
.footer__meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.footer__version{color:var(--gold)}
.footer__icp{color:var(--slate)}

/* ---------- 响应式 ---------- */
@media(max-width:1240px){
  .nav__link{padding:8px 8px;font-size:12.5px}
  .brand__name{font-size:16px}
}
@media(max-width:1080px){
  .nav{
    position:absolute;left:0;right:0;top:100%;
    display:block;padding:10px var(--gutter) 20px;
    max-height:calc(100vh - 96px);overflow-y:auto;
    background:linear-gradient(180deg,var(--ink-800),var(--ink-900));
    border-bottom:1px solid var(--cyan);
    opacity:0;visibility:hidden;transform:translateY(-8px);pointer-events:none;
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .nav[data-open]{opacity:1;visibility:visible;transform:none;pointer-events:auto}
  .nav__list{flex-direction:column;align-items:stretch;gap:0}
  .nav__link{justify-content:flex-start;padding:13px 12px;font-size:14px;border-bottom:1px solid var(--line-soft)}
  .nav__link[aria-current="page"]{border-bottom-color:var(--cyan)}
  .nav-toggle{display:inline-flex}
  .site-header__bar{gap:12px}
}
@media(max-width:900px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__col--contact{grid-column:1 / -1}
}
@media(max-width:720px){
  .site-header__strip{font-size:10px;letter-spacing:.1em}
  .header-actions .btn{padding:8px 11px;font-size:12px}
  .footer__top{align-items:flex-start}
}
@media(max-width:640px){
  .header-actions .btn--solid{display:none}
  .brand__sub{display:none}
  .site-header__status .status-pill:first-child{display:none}
  .footer__grid{grid-template-columns:1fr}
  .footer__col--contact{grid-column:auto}
  .footer__bottom{flex-direction:column;align-items:flex-start}
}

@media(prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
}