/* ==========================================================================
   伟德指南 · 共享样式 /assets/site.css
   深海蓝基底 · 电子青扫描线 · 暖金数据强调
   ========================================================================== */

:root{
  --deep:#0A1A2A;
  --midnight:#102A3F;
  --cool-gray:#93A1AE;
  --cedar:#E9EEF3;
  --cyan:#1FE3C4;
  --mist:#86F5E0;
  --gold:#F4B740;
  --gold-pale:#FFDB93;
  --ink:#04101B;
  --white:#FFFFFF;
  --ink-text:#1B3446;

  --font-head:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-body:"PingFang SC","Noto Sans SC","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --wrap:1240px;
  --pad-x:clamp(1rem,4vw,2.5rem);
  --gap:clamp(1rem,2vw,1.75rem);

  --radius-lg:28px;
  --radius-md:18px;
  --radius-sm:12px;

  --line:rgba(147,161,174,.24);
  --line-strong:rgba(147,161,174,.45);

  --t-fast:160ms cubic-bezier(.22,.61,.36,1);
  --t-mid:220ms cubic-bezier(.22,.61,.36,1);
}

/* ------------------------------ reset ---------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,dl,dd,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse}
[hidden]{display:none !important}

/* ------------------------------ base ----------------------------------- */
body{
  background-color:var(--deep);
  background-image:
    radial-gradient(1100px 560px at 82% -10%, rgba(31,227,196,.10), transparent 62%),
    radial-gradient(880px 520px at 4% 10%, rgba(244,183,64,.07), transparent 60%);
  background-repeat:no-repeat;
  color:var(--cedar);
  font-family:var(--font-body);
  font-size:clamp(16px,.55vw + 14.4px,17.5px);
  line-height:1.75;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5{
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.22;
  letter-spacing:.03em;
  color:var(--white);
}
h1{font-size:clamp(2rem,5.6vw,3.9rem);font-weight:900;letter-spacing:.05em;line-height:1.14}
h2{font-size:clamp(1.45rem,2.6vw,2rem)}
h3{font-size:clamp(1.12rem,1.4vw,1.32rem)}
p{max-width:74ch}
strong{color:var(--gold-pale);font-weight:700}
em{font-style:normal;color:var(--mist)}

.mono{font-family:var(--font-mono);letter-spacing:.1em;font-size:.82em}
.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}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:6px}

::selection{background:var(--cyan);color:var(--ink)}

/* ------------------------------ layout --------------------------------- */
.wrap{
  width:min(var(--wrap), calc(100% - 2 * var(--pad-x)));
  margin-inline:auto;
}

.section{
  position:relative;
  padding-block:clamp(2.6rem,5.5vw,4.4rem);
}
.section::before{
  content:"";
  position:absolute;
  inset-inline:0;
  top:0;
  height:6px;
  border-radius:0 0 6px 6px;
  background:linear-gradient(90deg,var(--cyan) 0%,rgba(31,227,196,.06) 46%,var(--gold) 100%);
  opacity:.6;
  pointer-events:none;
}
.section--dark{background:linear-gradient(180deg,var(--deep) 0%,var(--midnight) 100%)}
.section--panel{background:var(--midnight)}
.section--light{
  background:linear-gradient(180deg,var(--cedar) 0%,#DDE6EE 100%);
  color:var(--ink-text);
}
.section--light h1,.section--light h2,.section--light h3,.section--light h4{color:var(--deep)}
.section--light .mono,.section--light .eyebrow{color:#3F7182}
.section--light .link-underline{color:#0F7C6C}
.section--light strong{color:#9A6A03}

.grid{display:grid;gap:var(--gap)}
.grid-12{grid-template-columns:repeat(12,minmax(0,1fr))}
.col-rail{grid-column:1 / span 3}
.col-body{grid-column:4 / -1}
.span-6{grid-column:span 6}
.span-4{grid-column:span 4}
.span-8{grid-column:span 8}

.stack > * + *{margin-top:var(--gap)}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.22em;
  color:var(--cool-gray);
  text-transform:uppercase;
}
.eyebrow::before{
  content:"";
  width:18px;height:2px;
  background:var(--cyan);
  border-radius:2px;
}

.mark{color:var(--gold-pale);border-bottom:2px solid rgba(244,183,64,.5);padding-bottom:1px}

.link-underline{
  color:var(--mist);
  background-image:linear-gradient(var(--cyan),var(--cyan));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:100% 1px;
  transition:background-size var(--t-fast),color var(--t-fast);
}
.link-underline:hover{background-size:100% 2px;color:var(--white)}

/* ------------------------------ 面包屑 --------------------------------- */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
  color:var(--cool-gray);
  padding-block:.2rem;
}
.crumbs a{color:var(--cool-gray);transition:color var(--t-fast)}
.crumbs a:hover{color:var(--cyan)}
.crumbs .sep{opacity:.45}
.crumbs [aria-current="page"]{color:var(--mist)}

/* ------------------------------ 按钮 / 胶囊 ---------------------------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.5rem;
  padding:.78rem 1.5rem;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-head);
  font-weight:700;
  font-size:.94rem;
  letter-spacing:.05em;
  cursor:pointer;
  transition:transform var(--t-fast),background-color var(--t-fast),
             border-color var(--t-fast),color var(--t-fast),box-shadow var(--t-fast);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{
  background:var(--cyan);
  color:var(--ink);
  box-shadow:0 12px 30px -16px rgba(31,227,196,.9);
}
.btn-primary:hover{background:var(--mist)}
.btn-gold{background:var(--gold);color:#241703}
.btn-gold:hover{background:var(--gold-pale)}
.btn-ghost{
  border-color:var(--line-strong);
  color:var(--cedar);
  background:transparent;
}
.btn-ghost:hover{
  border-color:var(--cyan);
  color:var(--white);
  background:rgba(31,227,196,.08);
}
.section--light .btn-ghost{color:var(--deep);border-color:rgba(10,26,42,.3)}
.section--light .btn-ghost:hover{color:var(--deep);background:rgba(31,227,196,.22);border-color:var(--cyan)}

.chip{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.34rem .85rem;
  border-radius:999px;
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--cool-gray);
  font-family:var(--font-mono);
  font-size:.78rem;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--t-fast),background-color var(--t-fast),
             color var(--t-fast),transform var(--t-fast);
}
.chip:hover{border-color:var(--cyan);color:var(--white);transform:scale(1.02)}
.chip[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.chip--gold:hover{border-color:var(--gold);color:var(--gold-pale)}
.chip--gold[aria-pressed="true"]{background:var(--gold);border-color:var(--gold);color:#241703}

.num-badge{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:2.05rem;
  height:2.05rem;
  padding:0 .55rem;
  border-radius:999px;
  background:rgba(31,227,196,.13);
  border:1px solid rgba(31,227,196,.35);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:.74rem;
  letter-spacing:.06em;
}
.num-badge--gold{background:rgba(244,183,64,.14);border-color:rgba(244,183,64,.4);color:var(--gold)}

/* ------------------------------ 卡片 ----------------------------------- */
.card{
  background:linear-gradient(160deg,var(--midnight) 0%,#0C2135 100%);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(1.1rem,2.2vw,1.7rem);
  transition:border-color var(--t-mid),transform var(--t-mid),box-shadow var(--t-mid);
}
.card:hover{
  border-color:rgba(31,227,196,.5);
  box-shadow:0 22px 44px -32px rgba(31,227,196,.55);
}
.card-head{display:flex;align-items:baseline;gap:.7rem;margin-bottom:.55rem}
.card-title{font-size:1.14rem;font-weight:700;color:var(--white);letter-spacing:.02em}

/* ------------------------------ 左栏锚点 -------------------------------- */
.rail{
  position:sticky;
  top:118px;
  display:flex;
  flex-direction:column;
  gap:.9rem;
  align-self:start;
}
.rail-title{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.2em;
  color:var(--cool-gray);
}
.rail-nav{display:flex;flex-direction:column;gap:.15rem}
.index-link{
  display:flex;
  align-items:baseline;
  gap:.55rem;
  padding:.5rem .7rem;
  border-left:2px solid var(--line-strong);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--cool-gray);
  font-size:.93rem;
  transition:color var(--t-fast),border-color var(--t-fast),background-color var(--t-fast);
}
.index-link:hover{color:var(--white);border-left-color:var(--cyan);background:rgba(31,227,196,.07)}
.index-link[aria-current="true"]{color:var(--white);border-left-color:var(--cyan);background:rgba(31,227,196,.09)}
.index-link .mono{color:var(--cyan);font-size:.7rem}
.btn-back{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  align-self:flex-start;
  padding:.42rem .9rem;
  border-radius:999px;
  border:1px solid rgba(31,227,196,.5);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.14em;
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.btn-back:hover{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}

/* ------------------------------ 表格 ----------------------------------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:rgba(255,255,255,.02);
}
.table{width:100%;min-width:660px;font-size:.92rem}
.table th,.table td{padding:.8rem 1rem;text-align:left;border-bottom:1px solid var(--line)}
.table thead th{
  position:sticky;
  top:0;
  z-index:2;
  background:var(--midnight);
  color:var(--cool-gray);
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.14em;
}
.table tbody tr{transition:background-color var(--t-fast),box-shadow var(--t-fast)}
.table tbody tr:hover{background:rgba(31,227,196,.08);box-shadow:inset 3px 0 0 var(--cyan)}
.table tbody tr[data-highlight]{box-shadow:inset 3px 0 0 var(--gold)}
.table tbody tr[data-highlight]:hover{background:rgba(244,183,64,.09);box-shadow:inset 3px 0 0 var(--gold)}
.table td .mono{color:var(--cyan)}

/* ------------------------------ 数据带 --------------------------------- */
.stat-band{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(158px,1fr));
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.stat{background:var(--deep);padding:1.05rem 1.15rem}
.stat-value{font-family:var(--font-mono);font-size:1.32rem;color:var(--gold);letter-spacing:.04em;line-height:1.3}
.stat-label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.16em;color:var(--cool-gray)}

/* ------------------------------ 图片容器 -------------------------------- */
.figure{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(140deg,var(--midnight) 0%,#0A2033 60%,#0D2A42 100%);
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(rgba(147,161,174,.13) 1px,transparent 1px),
    linear-gradient(90deg,rgba(147,161,174,.13) 1px,transparent 1px);
  background-size:38px 38px;
  opacity:.55;
  pointer-events:none;
}
.figure img{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.figure--wide{aspect-ratio:16 / 7}
.figure--card{aspect-ratio:4 / 3}
.figure--square{aspect-ratio:1 / 1}
.figure--tall{aspect-ratio:3 / 4}
.figure-cap{
  margin-top:.55rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.1em;
  color:var(--cool-gray);
}

/* ------------------------------ 显现动画 -------------------------------- */
.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .5s ease,transform .5s ease;
}
.js-ready [data-reveal].is-revealed{opacity:1;transform:none}

/* ==========================================================================
   刊头
   ========================================================================== */
.skip-link{
  position:absolute;
  top:0;
  left:50%;
  z-index:400;
  padding:.62rem 1.2rem;
  border-radius:0 0 var(--radius-sm) var(--radius-sm);
  background:var(--cyan);
  color:var(--ink);
  font-weight:700;
  font-size:.9rem;
  transform:translate(-50%,-160%);
  transition:transform var(--t-fast);
}
.skip-link:focus{transform:translate(-50%,0)}

.site-header{
  position:sticky;
  top:0;
  z-index:300;
  background:linear-gradient(180deg,#0D2336 0%,var(--deep) 100%);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(6px);
}

.header-inner{
  width:min(var(--wrap), calc(100% - 2 * var(--pad-x)));
  margin-inline:auto;
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:.75rem;
  padding-block:1.15rem .95rem;
  transition:padding-block var(--t-mid);
}

.brand-mark{
  grid-column:2;
  justify-self:center;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:.28rem;
  text-align:center;
  transition:transform var(--t-mid);
}
.brand-name{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(1.55rem,4.2vw,2.35rem);
  letter-spacing:.24em;
  text-indent:.24em;
  color:var(--white);
  line-height:1.1;
  transition:font-size var(--t-mid),letter-spacing var(--t-mid);
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.2em;
  color:var(--cool-gray);
  transition:opacity var(--t-fast);
}

.nav-toggle{
  grid-column:1;
  justify-self:start;
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.5rem .8rem;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--cedar);
  transition:border-color var(--t-fast),background-color var(--t-fast),color var(--t-fast);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--white);background:rgba(31,227,196,.08)}
.nav-toggle-bars{display:inline-flex;flex-direction:column;gap:3px}
.nav-toggle-bars span{
  display:block;
  width:16px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform var(--t-fast),opacity var(--t-fast);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) 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(-5px) rotate(-45deg)}
.nav-toggle-text{font-size:.7rem;letter-spacing:.2em}

.header-actions{
  grid-column:3;
  justify-self:end;
  display:flex;
  align-items:center;
  gap:.5rem;
}
.search-trigger{
  display:inline-flex;
  align-items:center;
  gap:.5rem;
  padding:.46rem .9rem;
  border-radius:999px;
  border:1px solid rgba(31,227,196,.5);
  color:var(--cyan);
  transition:background-color var(--t-fast),color var(--t-fast),border-color var(--t-fast);
}
.search-trigger:hover{background:rgba(31,227,196,.12);color:var(--mist)}
.search-trigger[aria-expanded="true"]{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.search-trigger .mono{font-size:.74rem;letter-spacing:.18em}
.search-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:currentColor;
  box-shadow:0 0 0 3px rgba(31,227,196,.18);
}

.header-band{
  height:6px;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--mist) 34%,var(--gold) 100%);
  transition:height var(--t-mid),opacity var(--t-mid);
}

.site-nav{
  width:min(var(--wrap), calc(100% - 2 * var(--pad-x)));
  margin-inline:auto;
  padding-block:.7rem .85rem;
}
.nav-list{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:.3rem;
  flex-wrap:nowrap;
}
.nav-link{
  display:inline-flex;
  align-items:baseline;
  gap:.42rem;
  padding:.42rem .82rem;
  border-radius:999px;
  border:1px solid transparent;
  color:var(--cool-gray);
  white-space:nowrap;
  transition:color var(--t-fast),background-color var(--t-fast),border-color var(--t-fast);
}
.nav-link:hover{color:var(--white);border-color:rgba(31,227,196,.45);background:rgba(31,227,196,.07)}
.nav-num{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;color:var(--cyan)}
.nav-label{font-family:var(--font-head);font-size:.94rem;font-weight:600;letter-spacing:.05em}
.nav-link[aria-current="page"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.nav-link[aria-current="page"] .nav-num{color:rgba(4,16,27,.72)}
.nav-link[aria-current="page"] .nav-label{color:var(--ink)}

.site-header[data-stuck="true"]{box-shadow:0 18px 40px -34px rgba(0,0,0,.95)}
.site-header[data-stuck="true"] .header-inner{padding-block:.5rem .35rem}
.site-header[data-stuck="true"] .brand-name{font-size:1.12rem;letter-spacing:.18em;text-indent:.18em}
.site-header[data-stuck="true"] .brand-sub{opacity:0;visibility:hidden;height:0}
.site-header[data-stuck="true"] .header-band{height:2px;opacity:.85}
.site-header[data-stuck="true"] .nav-label{display:none}
.site-header[data-stuck="true"] .nav-link{padding:.34rem .62rem}
.site-header[data-stuck="true"] .site-nav{padding-block:.45rem .6rem}

/* 检索面板 */
.search-panel{
  background:linear-gradient(180deg,var(--midnight) 0%,#0C2135 100%);
  border-top:1px solid rgba(31,227,196,.28);
}
.search-panel-inner{
  width:min(var(--wrap), calc(100% - 2 * var(--pad-x)));
  margin-inline:auto;
  padding-block:1.1rem 1.4rem;
  display:grid;
  gap:.85rem;
}
.search-hint{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.16em;
  color:var(--cool-gray);
}
.search-group{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5rem;
}
.search-group-label{
  min-width:3.6rem;
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.18em;
  color:var(--cyan);
}
.search-actions{display:flex;flex-wrap:wrap;gap:.6rem;padding-top:.2rem}
.search-actions .btn{padding:.58rem 1.15rem;font-size:.86rem}

/* ==========================================================================
   页脚
   ========================================================================== */
.site-footer{
  position:relative;
  margin-top:clamp(2.4rem,5vw,4rem);
  background:var(--ink);
  color:var(--cool-gray);
  border-top:1px solid rgba(31,227,196,.35);
}
.footer-band{
  height:1px;
  background:linear-gradient(90deg,transparent 0%,var(--cyan) 30%,rgba(31,227,196,.25) 60%,var(--gold) 100%);
  opacity:.8;
}
.footer-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:2rem 1.6rem;
  padding-block:clamp(2.4rem,5vw,3.6rem) 1.6rem;
}
.footer-col{min-width:0}

.footer-brand-name{
  font-family:var(--font-head);
  font-size:1.5rem;
  font-weight:900;
  letter-spacing:.22em;
  color:var(--white);
  margin-bottom:.3rem;
}
.footer-brand-sub{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.18em;
  color:var(--cyan);
  margin-bottom:1rem;
}
.footer-note{
  font-size:.88rem;
  line-height:1.7;
  color:var(--cool-gray);
  max-width:46ch;
}
.footer-note + .footer-note{margin-top:.65rem}
.footer-note.mono{font-size:.72rem;letter-spacing:.1em;color:rgba(147,161,174,.8)}

.footer-title{
  font-family:var(--font-mono);
  font-size:.72rem;
  font-weight:500;
  letter-spacing:.22em;
  color:var(--cyan);
  margin-bottom:.95rem;
}
.footer-list{display:flex;flex-direction:column;gap:.1rem}
.footer-link{
  display:inline-flex;
  align-items:baseline;
  gap:.6rem;
  padding-block:.34rem;
  color:var(--cool-gray);
  font-size:.93rem;
  transition:color var(--t-fast),padding-left var(--t-fast);
}
.footer-link:hover{color:var(--white);padding-left:.3rem}
.footer-num{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.08em;
  color:rgba(31,227,196,.65);
}
.footer-link:hover .footer-num{color:var(--cyan)}

.footer-contact{display:flex;flex-direction:column;gap:.2rem;margin-bottom:.8rem}
.contact-row{
  display:flex;
  align-items:baseline;
  flex-wrap:wrap;
  gap:.55rem;
  padding-block:.3rem;
  border-bottom:1px dashed rgba(147,161,174,.2);
}
.contact-label{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.18em;
  color:rgba(147,161,174,.75);
  min-width:2.6rem;
}
.contact-value{
  color:var(--cedar);
  font-size:.92rem;
  word-break:break-all;
}
.copy-btn{
  margin-left:auto;
  padding:.16rem .55rem;
  border-radius:999px;
  border:1px solid var(--line-strong);
  color:var(--cool-gray);
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.14em;
  transition:border-color var(--t-fast),color var(--t-fast),background-color var(--t-fast);
}
.copy-btn:hover{border-color:var(--cyan);color:var(--cyan)}
.copy-btn[data-state="done"]{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.copy-btn[data-state="fail"]{border-color:var(--gold);color:var(--gold)}

.footer-icp{
  margin-top:.6rem;
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.12em;
  color:rgba(147,161,174,.85);
}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:.6rem;
  padding-block:1rem 1.6rem;
  border-top:1px solid rgba(147,161,174,.16);
}
.footer-copy{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.12em;
  color:rgba(147,161,174,.72);
}

/* ==========================================================================
   响应式
   ========================================================================== */
@media (min-width:861px){
  .header-inner{grid-template-columns:1fr auto 1fr;padding-block:1.35rem 1rem}
  .nav-toggle{display:none}
}

@media (max-width:860px){
  .site-nav{
    max-height:0;
    padding-block:0;
    overflow:hidden;
    visibility:hidden;
    transition:max-height .28s ease,opacity .28s ease,padding-block .28s ease,visibility .28s ease;
  }
  .site-nav[data-open]{
    max-height:30rem;
    padding-block:.6rem .9rem;
    visibility:visible;
  }
  .nav-list{
    flex-wrap:wrap;
    justify-content:flex-start;
    gap:.35rem;
  }
  .nav-link{padding:.42rem .72rem}
  .nav-label{font-size:.9rem}
  .rail{position:static;top:auto}
  .grid-12{grid-template-columns:1fr}
  .col-rail,.col-body,.span-4,.span-6,.span-8{grid-column:1 / -1}
  .footer-grid{gap:1.7rem}
}

@media (min-width:720px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col--brand{grid-column:span 2}
}
@media (min-width:1040px){
  .footer-grid{grid-template-columns:1.5fr 1fr 1.4fr 1fr}
  .footer-col--brand{grid-column:auto}
}

@media (max-width:560px){
  .brand-name{letter-spacing:.16em;text-indent:.16em}
  .brand-sub{font-size:.64rem;letter-spacing:.14em}
  .search-trigger{padding:.42rem .7rem}
  .search-trigger .mono{display:none}
  .header-inner{gap:.5rem}
  .stat-band{grid-template-columns:1fr 1fr}
  .footer-base{flex-direction:column;align-items:flex-start}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.01ms !important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
  .btn:hover{transform:none}
  .chip:hover{transform:none}
}