:root{
  --ink:#0B0E13;
  --ink-2:#1D232D;
  --paper:#F7F3E7;
  --paper-2:#EDE7D8;
  --gold:#F2C94C;
  --lime:#CFFF47;
  --slate:#46505E;
  --line:#BDB49F;
  --alert:#E4574B;
  --teal:#1FAF9A;
  --rail-w:240px;
  --radius:10px;
  --radius-sm:8px;
  --shadow-hard:8px 8px 0 var(--ink);
  --gap:24px;
  --header-h:64px;
  --scroll-progress:0;
  --font-display:"Barlow Condensed","Noto Sans SC","Source Han Sans SC","PingFang SC",sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-num:"IBM Plex Mono","Roboto Mono","SFMono-Regular",ui-monospace,monospace;
  --ease:cubic-bezier(.2,.8,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{
  background:var(--ink);
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
body{
  margin:0;
  min-height:100vh;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:0;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:901px){body{padding-left:var(--rail-w)}}
@media (max-width:900px){body{padding-top:var(--header-h)}body.nav-open{overflow:hidden}}
main{display:block}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.12;
  letter-spacing:-.01em;
  color:var(--ink);
  overflow-wrap:break-word;
}
h1{font-size:clamp(2.8rem,6vw,5.2rem);line-height:.95}
h2{font-size:clamp(1.8rem,3.2vw,2.8rem)}
h3{font-size:clamp(1.2rem,1.8vw,1.6rem);font-weight:700}
p,li{
  margin:0;
  font-size:clamp(1rem,1.05vw,1.125rem);
  line-height:1.78;
  color:var(--slate);
  overflow-wrap:break-word;
}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit}
img,svg{max-width:100%}
img{border-style:none}
button{font:inherit;color:inherit}
:where(a,button,summary,[tabindex]):focus-visible{
  outline:2px solid var(--ink);
  outline-offset:2px;
  box-shadow:0 0 0 4px var(--lime);
  border-radius:4px;
}
.visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}
.skip-link{
  position:absolute;
  top:12px;left:12px;
  z-index:300;
  display:inline-block;
  padding:10px 18px;
  background:var(--lime);
  color:var(--ink);
  font-weight:700;
  font-size:.9rem;
  text-decoration:none;
  border:2px solid var(--ink);
  border-radius:var(--radius-sm);
  box-shadow:4px 4px 0 var(--ink);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}
@media (min-width:901px){.skip-link{left:calc(var(--rail-w) + 16px)}}

/* ---------- 侧轨头部 ---------- */
.site-rail{
  position:fixed;
  top:0;left:0;bottom:0;
  z-index:120;
  display:flex;
  flex-direction:column;
  width:var(--rail-w);
  background:var(--ink);
  color:var(--paper);
  border-right:2px solid var(--ink);
}
.rail-inner{
  display:flex;
  flex-direction:column;
  gap:20px;
  width:100%;
  height:100%;
  padding:22px 20px 20px;
  overflow-y:auto;
  overscroll-behavior:contain;
  scrollbar-width:thin;
  scrollbar-color:rgba(247,243,231,.28) transparent;
}
.rail-head{
  display:flex;
  flex-direction:column;
  gap:8px;
  flex:none;
}
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--paper);
}
.brand__mark{
  flex:none;
  display:grid;
  place-items:center;
  width:40px;height:40px;
  font-family:var(--font-display);
  font-size:1.25rem;
  font-weight:800;
  line-height:1;
  color:var(--gold);
  background:var(--ink-2);
  border:2px solid var(--gold);
  border-radius:var(--radius-sm);
  box-shadow:3px 3px 0 rgba(242,201,76,.22);
}
.brand__text{display:block;min-width:0}
.brand__name{
  display:block;
  font-family:var(--font-display);
  font-size:1.12rem;
  font-weight:800;
  line-height:1.05;
  letter-spacing:.02em;
  color:var(--paper);
}
.brand__descriptor{
  display:block;
  margin-top:3px;
  font-size:.66rem;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--gold);
}
.brand__note{
  font-size:.68rem;
  letter-spacing:.1em;
  line-height:1.6;
  color:rgba(247,243,231,.52);
}
.nav-toggle{
  display:none;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:6px 12px;
  background:transparent;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:.8rem;
  font-weight:700;
  letter-spacing:.06em;
  border:2px solid var(--gold);
  border-radius:var(--radius-sm);
  cursor:pointer;
  transition:background .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(242,201,76,.14)}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  width:18px;
}
.nav-toggle__bar{
  display:block;
  height:2px;width:100%;
  background:var(--paper);
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.site-rail[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-rail[data-open] .nav-toggle__bar:nth-child(2){opacity:0}
.site-rail[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.rail-drawer{display:contents}
.site-nav{flex:1 1 auto;min-height:0}
.site-nav__list{
  display:flex;
  flex-direction:column;
  gap:4px;
  counter-reset:navitem;
}
.site-nav__item{display:block}
.site-nav__link{
  display:flex;
  align-items:baseline;
  gap:10px;
  padding:10px 12px;
  color:rgba(247,243,231,.82);
  font-size:.95rem;
  font-weight:600;
  line-height:1.4;
  text-decoration:none;
  border:2px solid transparent;
  border-radius:var(--radius-sm);
  box-shadow:inset 4px 0 0 transparent;
  transition:background .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease),box-shadow .18s var(--ease);
}
.site-nav__link:hover{
  background:var(--ink-2);
  color:var(--paper);
  border-color:rgba(242,201,76,.55);
}
.site-nav__link[aria-current="page"]{
  background:var(--gold);
  color:var(--ink);
  font-weight:800;
  border-color:var(--ink);
  box-shadow:inset 4px 0 0 var(--lime);
}
.site-nav__index{
  flex:none;
  font-family:var(--font-num);
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.06em;
  opacity:.62;
}
.site-nav__label{display:block}
.rail-foot{
  flex:none;
  display:flex;
  flex-direction:column;
  gap:10px;
  margin-top:auto;
  padding-top:16px;
  border-top:2px solid rgba(247,243,231,.16);
}
.rail-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 16px;
  background:var(--lime);
  color:var(--ink);
  font-size:.95rem;
  font-weight:800;
  line-height:1;
  text-decoration:none;
  border:2px solid var(--ink);
  border-radius:var(--radius-sm);
  box-shadow:4px 4px 0 rgba(247,243,231,.2);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease);
}
.rail-cta:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 rgba(247,243,231,.2)}
.rail-contact{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:8px 2px;
  color:rgba(247,243,231,.72);
  font-size:.82rem;
  font-weight:600;
  letter-spacing:.04em;
  text-decoration:none;
  border-bottom:1px dashed rgba(247,243,231,.28);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.rail-contact:hover{color:var(--lime);border-color:var(--lime)}
.rail-progress{
  position:absolute;
  top:0;right:0;bottom:0;
  width:4px;
  background:rgba(247,243,231,.12);
  pointer-events:none;
}
.rail-progress__fill{
  display:block;
  width:100%;height:100%;
  background:var(--lime);
  transform:scaleY(var(--scroll-progress,0));
  transform-origin:top center;
}
.nav-scrim{display:none}

/* ---------- 页脚 ---------- */
.site-footer{
  margin-top:clamp(40px,7vw,96px);
  padding:0 clamp(18px,4vw,48px);
  background:var(--ink);
  color:var(--paper);
  border-top:4px solid var(--gold);
}
.site-footer>*{width:100%;max-width:1240px;margin-inline:auto}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,2fr);
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(28px,4vw,46px);
  border-bottom:2px solid rgba(247,243,231,.16);
}
.footer-brand__line{
  font-family:var(--font-display);
  font-size:clamp(1.1rem,1.6vw,1.4rem);
  font-weight:800;
  line-height:1.25;
  letter-spacing:.01em;
  color:var(--paper);
}
.footer-brand__descriptor{
  margin-top:8px;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--gold);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.footer-col__title{
  margin-bottom:12px;
  font-family:var(--font-body);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--gold);
}
.footer-col__list{display:flex;flex-direction:column;gap:8px}
.footer-col__link{
  display:inline-block;
  padding-bottom:1px;
  color:rgba(247,243,231,.82);
  font-size:.92rem;
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-col__link:hover{color:var(--lime);border-bottom-color:var(--lime)}
.footer-contact{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:10px 28px;
  padding-block:clamp(20px,3vw,32px);
  border-bottom:2px solid rgba(247,243,231,.16);
}
.footer-contact__title{
  font-family:var(--font-body);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.16em;
  color:var(--gold);
  flex:none;
}
.footer-contact__list{
  display:flex;
  flex-wrap:wrap;
  gap:10px 28px;
  flex:1 1 320px;
}
.footer-contact__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.88rem;
  line-height:1.6;
  color:rgba(247,243,231,.82);
}
.footer-contact__key{
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.12em;
  color:var(--gold);
}
.footer-contact__value{
  font-family:var(--font-num);
  font-size:.86rem;
  letter-spacing:.01em;
  color:var(--paper);
}
.footer-contact__note{
  flex:1 1 100%;
  font-size:.78rem;
  line-height:1.7;
  color:rgba(247,243,231,.58);
}
.copy-btn{
  padding:3px 9px;
  background:transparent;
  color:rgba(247,243,231,.78);
  font-family:var(--font-body);
  font-size:.7rem;
  font-weight:700;
  letter-spacing:.08em;
  border:2px solid rgba(247,243,231,.3);
  border-radius:6px;
  cursor:pointer;
  transition:color .18s var(--ease),border-color .18s var(--ease),background .18s var(--ease);
}
.copy-btn:hover{color:var(--gold);border-color:var(--gold);background:rgba(242,201,76,.12)}
.footer-copy-status{
  flex:1 1 100%;
  min-height:1.2em;
  font-size:.78rem;
  line-height:1.5;
  color:var(--lime);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:8px 24px;
  padding-block:clamp(16px,2.4vw,24px);
}
.footer-legal,.footer-copy{
  font-family:var(--font-num);
  font-size:.76rem;
  letter-spacing:.04em;
  color:rgba(247,243,231,.6);
}

/* ---------- 通用排版与容器 ---------- */
.container{
  width:100%;
  max-width:1240px;
  margin-inline:auto;
  padding-inline:clamp(16px,3.2vw,48px);
}
.section{padding-block:clamp(36px,6vw,76px)}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:12px 24px;
  margin-bottom:clamp(18px,2.6vw,32px);
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.18em;
  line-height:1.4;
  color:var(--slate);
}
.eyebrow::before{
  content:"";
  display:inline-block;
  width:24px;height:2px;
  background:var(--gold);
}
.display{
  font-family:var(--font-display);
  font-size:clamp(2.8rem,6vw,5.2rem);
  font-weight:800;
  line-height:.95;
  letter-spacing:-.01em;
  color:var(--ink);
}
.lede{
  max-width:46ch;
  font-size:clamp(1.02rem,1.4vw,1.22rem);
  line-height:1.72;
  color:var(--slate);
}
.prose{max-width:68ch}
.prose>*+*{margin-top:1em}
.stack{display:flex;flex-direction:column;gap:var(--stack-gap,16px)}
.rule{
  border:0;
  border-top:2px solid var(--line);
  margin-block:clamp(20px,3vw,32px);
}
.data-num{
  font-family:var(--font-num);
  font-variant-numeric:tabular-nums;
  font-weight:700;
  letter-spacing:-.02em;
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:var(--gap);grid-template-columns:minmax(0,1fr)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--aside{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-family:var(--font-body);
  font-size:.95rem;
  font-weight:700;
  line-height:1;
  letter-spacing:.02em;
  text-decoration:none;
  border:2px solid var(--ink);
  border-radius:var(--radius-sm);
  box-shadow:4px 4px 0 var(--ink);
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),border-color .18s var(--ease);
}
.btn:hover{transform:translate(2px,2px);box-shadow:2px 2px 0 var(--ink)}
.btn--primary{background:var(--lime);color:var(--ink)}
.btn--gold{background:var(--gold);color:var(--ink)}
.btn--ghost{background:transparent;color:var(--ink)}
.btn--sm{padding:8px 14px;font-size:.82rem;box-shadow:3px 3px 0 var(--ink)}

/* ---------- 标签与筛选 ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 14px;
  background:var(--paper);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:.82rem;
  font-weight:700;
  line-height:1.2;
  border:2px solid var(--ink);
  border-radius:999px;
  cursor:pointer;
  transition:background .18s var(--ease),box-shadow .18s var(--ease),transform .18s var(--ease);
}
.chip:hover{background:var(--paper-2)}
.chip[aria-pressed="true"]{
  background:var(--lime);
  box-shadow:3px 3px 0 var(--ink);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 10px;
  background:var(--paper-2);
  color:var(--ink);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.5;
  border:2px solid var(--ink);
  border-radius:999px;
}
.tag--lime{background:var(--lime)}
.tag--gold{background:var(--gold)}
.tag--dark{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* ---------- 卡片 ---------- */
.card{
  padding:clamp(18px,2.4vw,28px);
  background:var(--paper);
  border:2px solid var(--ink);
  border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),border-color .2s var(--ease);
}
.card:hover{
  transform:translate(2px,2px);
  box-shadow:6px 6px 0 var(--ink);
  border-color:var(--gold);
}
.card--dark{
  background:var(--ink-2);
  color:var(--paper);
  border-color:var(--ink);
}
.card--dark h2,.card--dark h3{color:var(--paper)}
.card--dark p,.card--dark li{color:rgba(247,243,231,.78)}

/* ---------- 图像容器（页面阶段放入 img/svg） ---------- */
.media{
  position:relative;
  display:block;
  width:100%;
  aspect-ratio:16/9;
  background:var(--paper-2);
  border:2px solid var(--ink);
  border-radius:var(--radius);
  box-shadow:var(--shadow-hard);
  overflow:hidden;
}
.media img,.media svg{display:block;width:100%;height:100%;object-fit:cover}
.media--wide{aspect-ratio:21/9}
.media--tall{aspect-ratio:4/5}
.media--square{aspect-ratio:1/1}
.media__caption{
  position:absolute;
  left:0;bottom:0;
  padding:6px 12px;
  max-width:100%;
  background:var(--ink);
  color:var(--paper);
  font-size:.72rem;
  font-weight:700;
  letter-spacing:.06em;
  border-top-right-radius:var(--radius-sm);
}

/* ---------- 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-size:.76rem;
  letter-spacing:.06em;
  color:var(--slate);
}
.breadcrumbs__link{
  color:var(--slate);
  text-decoration:none;
  border-bottom:1px solid var(--line);
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.breadcrumbs__link:hover{color:var(--ink);border-color:var(--gold)}
.breadcrumbs__sep{color:var(--line);font-family:var(--font-num)}
.breadcrumbs__current{color:var(--ink);font-weight:700}

/* ---------- 显现协议 ---------- */
[data-reveal]{
  transition:opacity .34s var(--ease),transform .34s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
.js [data-reveal]:not(.is-revealed){opacity:0;transform:translateY(12px)}

/* ---------- 响应式 ---------- */
@media (max-width:1100px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:980px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--split,.grid--aside{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:900px){
  .site-rail{
    right:0;
    bottom:auto;
    width:auto;
    height:var(--header-h);
    flex-direction:row;
    border-right:0;
    border-bottom:2px solid var(--ink);
    box-shadow:0 4px 0 rgba(11,14,19,.14);
  }
  .rail-inner{
    flex-direction:row;
    align-items:center;
    gap:12px;
    height:auto;
    padding:0 16px;
    overflow:visible;
  }
  .rail-head{flex:1 1 auto;flex-direction:row;align-items:center;gap:10px;min-width:0}
  .brand__note{display:none}
  .brand__mark{width:36px;height:36px;font-size:1.1rem}
  .brand__name{font-size:1rem}
  .nav-toggle{display:inline-flex}
  .rail-drawer{
    position:fixed;
    top:var(--header-h);
    left:0;
    right:0;
    display:block;
    z-index:118;
    padding:16px;
    background:var(--ink);
    border-bottom:2px solid var(--gold);
    box-shadow:0 8px 0 rgba(11,14,19,.2);
    max-height:calc(100dvh - var(--header-h));
    overflow-y:auto;
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .site-rail[data-open] .rail-drawer{opacity:1;visibility:visible;transform:none}
  .rail-foot{margin-top:16px}
  .rail-progress{display:none}
  .nav-scrim{
    display:block;
    position:fixed;
    inset:0;
    z-index:110;
    background:rgba(11,14,19,.55);
    opacity:0;
    visibility:hidden;
    transition:opacity .2s var(--ease),visibility .2s var(--ease);
  }
  .site-rail[data-open]+.nav-scrim{opacity:1;visibility:visible}
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:640px){
  body{font-size:15.5px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-cols{grid-template-columns:minmax(0,1fr);gap:20px}
  .footer-contact__list{flex-direction:column;gap:10px}
  .footer-contact__item{flex-wrap:wrap}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .card{box-shadow:6px 6px 0 var(--ink)}
  .media{box-shadow:6px 6px 0 var(--ink)}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    transition-delay:0ms!important;
  }
  [data-reveal]{transform:none!important;opacity:1!important}
  .card:hover,.btn:hover,.rail-cta:hover{transform:none}
}