/* ============================================================
   足博赛场 / Site Kit
   /assets/site.css — reset · tokens · 中文排版 · header · footer
   · 按钮 · 面包屑 · 网格 · 基础组件
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg,video{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0}
a{color:inherit;text-underline-offset:.22em}

/* ---------- 2. Tokens ---------- */
:root{
  /* 品牌色 */
  --grass:#0C3B2A;
  --grass-deep:#08281C;
  --night:#101A2B;
  --cyan:#2EE6B6;
  --orange:#FF7A29;
  --stand:#8A93A0;
  --mist:#F4F7F3;
  --ink:#061A13;
  --violet:#6E5BFF;
  --sand:#E8DCC8;
  --white:#FFFFFF;

  /* 线与面 */
  --line-dark:rgba(244,247,243,.14);
  --line-light:rgba(6,26,19,.14);
  --line-cyan:rgba(46,230,182,.34);

  /* 字体 */
  --font-display:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:system-ui,-apple-system,"Segoe UI","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,"Roboto Mono","SFMono-Regular",Menlo,Consolas,"Liberation Mono",monospace;

  /* 度量 */
  --shell:1280px;
  --gutter:clamp(1.15rem,4vw,2.5rem);
  --gap:clamp(1rem,2.2vw,2rem);
  --cut:20px;
  --slant-h:clamp(24px,4vw,52px);
  --footer-slant:clamp(22px,4vw,44px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础与中文排版 ---------- */
body{
  background:var(--mist);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:clamp(15px,.5vw + 13.5px,17px);
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.02em;
}
h1{font-size:clamp(2rem,5vw,4.5rem);font-stretch:condensed}
h2{font-size:clamp(1.5rem,3vw,2.5rem)}
h3{font-size:clamp(1.125rem,1.6vw,1.5rem);line-height:1.25}
p{max-width:42em}
strong{font-weight:700}
::selection{background:var(--cyan);color:var(--ink)}

/* 工具类 */
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.eyebrow{
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.lede{
  font-size:clamp(1.0625rem,1.4vw,1.25rem);
  font-weight:500;
  line-height:1.65;
  color:var(--grass);
  max-width:36em;
}

/* 焦点态：深底荧光青，浅底改用墨黑绿保证对比 */
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px}
.band--mist :focus-visible,
.band--sand :focus-visible,
.cut-card :focus-visible,
.index-rail :focus-visible,
.site-footer :focus-visible{outline-color:var(--cyan)}
.band--mist :focus-visible,
.band--sand :focus-visible,
.cut-card :focus-visible{outline-color:var(--ink)}

/* ---------- 4. 容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.shell--narrow{max-width:880px}
.grid{display:grid;gap:var(--gap);align-items:start}
.grid--7-5{grid-template-columns:7fr 5fr}
.grid--8-4{grid-template-columns:8fr 4fr}
.grid--5-7{grid-template-columns:5fr 7fr}
.grid--3col{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--2col{grid-template-columns:repeat(2,minmax(0,1fr))}
.prose{max-width:min(100%,42em)}
.prose p{margin-bottom:1.15em}
.prose p:last-child{margin-bottom:0}
.prose h3{margin:2rem 0 .65rem}
.prose ul,.prose ol{padding-left:1.15em;margin-bottom:1.15em;max-width:40em}
.prose li{margin-bottom:.35em}

/* ---------- 5. 色带分区 ---------- */
.band{
  position:relative;
  padding-block:clamp(2.5rem,6vw,5rem);
}
.band--mist{background:var(--mist);color:var(--ink)}
.band--grass{background:var(--grass);color:var(--mist)}
.band--night{background:var(--night);color:var(--mist)}
.band--sand{background:var(--sand);color:var(--ink)}
.band--grass .lede,.band--night .lede{color:var(--sand)}
.band--grass .eyebrow,.band--night .eyebrow{color:var(--cyan)}
.band--slant{
  clip-path:polygon(0 var(--slant-h),100% 0,100% 100%,0 100%);
  padding-top:calc(var(--slant-h) + clamp(2.5rem,6vw,5rem));
  margin-top:calc(-1 * var(--slant-h));
}

/* ---------- 6. 区块标题 ---------- */
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:.75rem 1.5rem;
  padding-bottom:.9rem;
  margin-bottom:clamp(1.5rem,3vw,2.5rem);
  border-bottom:1px solid var(--line-dark);
}
.band--mist .section-head,
.band--sand .section-head{border-bottom-color:var(--line-light)}
.section-head__kicker{
  display:block;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
}
.band--mist .section-head__kicker,
.band--sand .section-head__kicker{color:var(--grass)}
.section-head__title{
  margin-top:.35rem;
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.5rem,3vw,2.25rem);
  letter-spacing:-.02em;
  line-height:1.1;
}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.55rem;
  padding:.82rem 1.25rem;
  font-family:var(--font-body);
  font-size:.875rem;
  font-weight:700;
  line-height:1.1;
  letter-spacing:.03em;
  text-decoration:none;
  white-space:nowrap;
  border:1px solid transparent;
  background:var(--grass);
  color:var(--mist);
  cursor:pointer;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             transform .18s var(--ease),box-shadow .18s var(--ease),
             border-color .18s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--action{
  background:var(--orange);
  color:var(--ink);
  box-shadow:4px 4px 0 0 rgba(6,26,19,.35);
}
.btn--action:hover{box-shadow:6px 6px 0 0 rgba(6,26,19,.45)}
.btn--ghost{
  background:transparent;
  color:var(--cyan);
  border-color:var(--line-cyan);
}
.btn--ghost:hover{background:rgba(46,230,182,.12);color:var(--white)}
.band--mist .btn--ghost,
.band--sand .btn--ghost{color:var(--grass);border-color:rgba(12,59,42,.4)}
.band--mist .btn--ghost:hover,
.band--sand .btn--ghost:hover{background:rgba(12,59,42,.08);color:var(--ink)}
.btn--sm{padding:.5rem .8rem;font-size:.75rem;letter-spacing:.07em}
.btn__arrow{font-family:var(--font-mono);font-size:.95em;line-height:1}

/* ---------- 8. 标签 ---------- */
.label-tag{
  display:inline-flex;
  align-items:center;
  gap:.4rem;
  padding:.3rem .55rem;
  font-family:var(--font-mono);
  font-size:.625rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  line-height:1.4;
  background:var(--sand);
  color:var(--ink);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 6px),calc(100% - 6px) 100%,0 100%);
}
.label-tag--cyan{background:var(--cyan);color:var(--ink)}
.label-tag--violet{background:var(--violet);color:var(--white)}
.label-tag--orange{background:var(--orange);color:var(--ink)}
.label-tag--night{background:var(--night);color:var(--cyan)}
.label-tag--sand{background:var(--sand);color:var(--ink)}

/* ---------- 9. 卡片 ---------- */
.cut-card{
  position:relative;
  padding:clamp(1.1rem,2vw,1.6rem);
  background:var(--white);
  color:var(--ink);
  clip-path:polygon(0 0,calc(100% - var(--cut)) 0,100% var(--cut),100% 100%,var(--cut) 100%,0 calc(100% - var(--cut)));
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.cut-card--dark{background:var(--grass);color:var(--mist)}
.cut-card--night{background:var(--night);color:var(--mist)}
.cut-card--sand{background:var(--sand);color:var(--ink)}
.cut-card:hover{transform:translateY(-2px)}
.cut-card__kicker{
  font-family:var(--font-mono);
  font-size:.625rem;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--violet);
  margin-bottom:.5rem;
}
.cut-card--dark .cut-card__kicker,
.cut-card--night .cut-card__kicker{color:var(--cyan)}
.cut-card__title{
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(1.0625rem,1.5vw,1.3rem);
  line-height:1.25;
  letter-spacing:-.015em;
  margin-bottom:.5rem;
}
.cut-card__text{font-size:.9375rem;line-height:1.7;max-width:34em}
.cut-card--dark .cut-card__text,
.cut-card--night .cut-card__text{color:rgba(244,247,243,.82)}
.cut-card__meta{
  margin-top:1rem;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.1em;
  color:var(--stand);
}

/* ---------- 10. 图片容器（供页面阶段放置图片） ---------- */
.media{
  position:relative;
  display:block;
  overflow:hidden;
  isolation:isolate;
  background:linear-gradient(135deg,var(--night),var(--grass));
}
.media > img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16/10;
}
.media--wide > img{aspect-ratio:21/9}
.media--tall > img{aspect-ratio:3/4}
.media--square > img{aspect-ratio:1/1}
.media--cut{
  clip-path:polygon(0 0,calc(100% - 22px) 0,100% 22px,100% 100%,22px 100%,0 calc(100% - 22px));
}
.media--slant{clip-path:polygon(0 0,100% 3.5%,100% 100%,0 96.5%)}
.media--empty::after{
  content:"";
  position:absolute;
  inset:0;
  background:repeating-linear-gradient(135deg,rgba(46,230,182,.14) 0 2px,transparent 2px 14px);
  pointer-events:none;
}
.media__tag{position:absolute;top:0;left:0;z-index:2}
.media__caption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  padding:1.6rem 1rem .9rem;
  background:linear-gradient(to top,rgba(6,26,19,.86),rgba(6,26,19,0));
  color:var(--mist);
  font-size:.8125rem;
  line-height:1.5;
}

/* ---------- 11. 指标与索引 ---------- */
.stat{display:flex;flex-direction:column;gap:.25rem}
.stat__value{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:clamp(1.5rem,3vw,2.5rem);
  line-height:1;
  letter-spacing:-.02em;
  font-variant-numeric:tabular-nums;
  color:var(--cyan);
}
.band--mist .stat__value,
.band--sand .stat__value,
.cut-card .stat__value{color:var(--grass)}
.stat__label{
  font-size:.75rem;
  letter-spacing:.12em;
  color:var(--stand);
}
.index-rail{
  padding:clamp(1rem,2vw,1.5rem);
  background:var(--grass);
  color:var(--mist);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 24px),calc(100% - 24px) 100%,0 100%);
}
.index-rail__title{
  margin-bottom:.9rem;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.index-rail__list{display:grid;gap:.1rem}
.index-rail__link{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:1rem;
  padding:.5rem .75rem;
  font-size:.875rem;
  color:rgba(244,247,243,.8);
  text-decoration:none;
  border-left:3px solid transparent;
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.index-rail__link:hover{background:rgba(46,230,182,.1);color:var(--white)}
.index-rail__link[aria-current="true"]{
  border-left-color:var(--cyan);
  color:var(--cyan);
  background:rgba(46,230,182,.08);
}
.index-rail__meta{
  font-family:var(--font-mono);
  font-size:.6875rem;
  color:var(--stand);
}

/* ---------- 12. 面包屑 ---------- */
.crumbs{font-size:.75rem}
.crumbs__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.45rem .55rem;
  font-family:var(--font-mono);
  letter-spacing:.04em;
}
.crumbs__item{display:flex;align-items:center;gap:.55rem;color:var(--stand)}
.crumbs__item:not(:last-child)::after{content:"/";color:rgba(138,147,160,.6)}
.crumbs__link{color:inherit;text-decoration:none}
.crumbs__link:hover{color:var(--cyan);text-decoration:underline}
.crumbs__current{color:var(--cyan)}
.band--mist .crumbs__current,
.band--sand .crumbs__current{color:var(--grass)}

/* ---------- 13. 跳至主内容 ---------- */
.skip-link{
  position:fixed;
  top:0;
  left:0;
  z-index:300;
  padding:.9rem 1.4rem;
  font-size:.875rem;
  font-weight:700;
  color:var(--ink);
  background:var(--cyan);
  text-decoration:none;
  transform:translateY(-150%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 14. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:120;
  isolation:isolate;
}

/* 14a. 遥测条（比分牌上层） */
.header-strip{
  background:var(--night);
  color:var(--mist);
  border-bottom:1px solid var(--line-cyan);
}
.header-strip__inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:1rem clamp(1rem,3vw,2rem);
  min-height:44px;
  padding-block:.35rem;
  transition:min-height .25s var(--ease),padding .25s var(--ease);
}
.strip-status{
  display:inline-flex;
  align-items:center;
  gap:.45rem;
  font-family:var(--font-mono);
  font-size:.6875rem;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--stand);
  white-space:nowrap;
}
.strip-status__dot{
  width:7px;
  height:7px;
  flex:0 0 auto;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(46,230,182,.18);
  animation:pulse 2.6s ease-in-out infinite;
}
.strip-status__text{color:var(--stand)}
.strip-status__version{color:var(--cyan);letter-spacing:.1em}

@keyframes pulse{
  0%,100%{box-shadow:0 0 0 3px rgba(46,230,182,.18)}
  50%{box-shadow:0 0 0 5px rgba(46,230,182,.06)}
}

.strip-metrics{
  display:flex;
  justify-content:center;
  align-items:baseline;
  gap:clamp(.9rem,3vw,2.75rem);
  min-width:0;
}
.metric{display:inline-flex;align-items:baseline;gap:.4rem;white-space:nowrap}
.metric__value{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:.9375rem;
  line-height:1;
  color:var(--white);
  font-variant-numeric:tabular-nums;
}
.metric__label{
  font-size:.625rem;
  letter-spacing:.18em;
  color:var(--stand);
}
.header-cta{justify-self:end}

/* 14b. 指令栏 */
.header-bar{
  position:relative;
  background:var(--grass);
  color:var(--mist);
  box-shadow:0 14px 34px -26px rgba(0,0,0,.9);
}
.header-bar__inner{
  display:flex;
  align-items:center;
  gap:1rem;
  min-height:66px;
  transition:min-height .25s var(--ease);
}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:.65rem;
  flex:0 0 auto;
  color:var(--white);
  text-decoration:none;
}
.brand__mark{
  position:relative;
  width:30px;
  height:30px;
  flex:0 0 auto;
  background:var(--cyan);
  clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);
}
.brand__mark::after{
  content:"";
  position:absolute;
  left:50%;
  top:6px;
  bottom:6px;
  width:2px;
  background:var(--grass);
  transform:translateX(-50%) rotate(14deg);
}
.brand__text{display:flex;flex-direction:column;gap:.12rem;line-height:1}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.0625rem;
  letter-spacing:.05em;
}
.brand__sub{
  font-family:var(--font-mono);
  font-size:.5625rem;
  letter-spacing:.24em;
  color:var(--cyan);
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:.55rem;
  margin-left:auto;
  padding:.5rem .7rem;
  font-size:.8125rem;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--mist);
  border:1px solid var(--line-cyan);
  cursor:pointer;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 8px),calc(100% - 8px) 100%,0 100%);
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(46,230,182,.12);color:var(--white)}
.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:10px;
  flex:0 0 auto;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background:var(--cyan);
  transition:transform .2s var(--ease),top .2s var(--ease),bottom .2s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{bottom:4px;transform:rotate(-45deg)}
.nav-toggle__text{white-space:nowrap}

/* 导航 */
.site-nav{margin-left:auto}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:.1rem;
  flex-wrap:nowrap;
}
.site-nav__link{
  position:relative;
  display:flex;
  align-items:baseline;
  gap:.4rem;
  padding:.6rem .7rem .75rem .85rem;
  font-size:.875rem;
  font-weight:500;
  letter-spacing:.02em;
  color:rgba(244,247,243,.76);
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s var(--ease),background-color .2s var(--ease);
}
.site-nav__index{
  font-family:var(--font-mono);
  font-size:.5625rem;
  letter-spacing:.06em;
  color:rgba(138,147,160,.9);
  transition:color .2s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:.85rem;
  right:.7rem;
  bottom:.42rem;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .28s var(--ease);
}
.site-nav__link::before{
  content:"";
  position:absolute;
  left:0;
  top:50%;
  width:3px;
  height:1.05em;
  background:var(--cyan);
  transform:translateY(-50%) scaleY(0);
  transform-origin:center;
  transition:transform .22s var(--ease);
}
.site-nav__link:hover,
.site-nav__link:focus-visible{color:var(--white);background:rgba(46,230,182,.07)}
.site-nav__link:hover::after,
.site-nav__link:focus-visible::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]{color:var(--cyan)}
.site-nav__link[aria-current="page"] .site-nav__index{color:var(--cyan)}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1)}
.site-nav__link[aria-current="page"]::before{transform:translateY(-50%) scaleY(1)}

/* 滚动进度 */
.progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(244,247,243,.1);
  pointer-events:none;
}
.progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  transition:width .12s linear;
}

/* 14c. 滚动压缩态 */
.site-header.is-compact .header-strip__inner{min-height:30px;padding-block:.12rem}
.site-header.is-compact .metric__label{display:none}
.site-header.is-compact .header-bar__inner{min-height:54px}
.site-header.is-compact .brand__sub{display:none}
.site-header.is-compact .site-nav__link{padding-block:.45rem .6rem}

/* ---------- 15. 页脚 ---------- */
.site-footer{
  position:relative;
  padding:calc(var(--footer-slant) + clamp(2.5rem,5vw,4rem)) 0 1.5rem;
  background:var(--night);
  color:var(--mist);
  clip-path:polygon(0 var(--footer-slant),100% 0,100% 100%,0 100%);
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr .8fr .9fr 1.3fr;
  gap:clamp(1.5rem,3.5vw,3rem);
  padding-bottom:clamp(2rem,4vw,3rem);
  border-bottom:1px solid var(--line-dark);
}
.footer-brand__mark{
  display:block;
  width:26px;
  height:26px;
  background:var(--cyan);
  clip-path:polygon(0 0,100% 0,100% 64%,64% 100%,0 100%);
}
.footer-brand__name{
  margin:.85rem 0 .4rem;
  font-family:var(--font-display);
  font-weight:900;
  font-size:1.25rem;
  letter-spacing:.05em;
  color:var(--white);
}
.footer-brand__line{
  margin-bottom:1rem;
  font-size:.9rem;
  line-height:1.7;
  color:rgba(244,247,243,.72);
  max-width:24em;
}
.version-badge{
  display:inline-block;
  padding:.3rem .55rem;
  font-family:var(--font-mono);
  font-size:.625rem;
  letter-spacing:.12em;
  color:var(--cyan);
  border:1px solid var(--line-cyan);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 7px),calc(100% - 7px) 100%,0 100%);
}
.footer-col__title{
  margin-bottom:.9rem;
  font-family:var(--font-mono);
  font-size:.6875rem;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-nav__list{display:grid;gap:.5rem}
.footer-nav__link{
  display:inline-block;
  padding:.1rem 0;
  font-size:.9rem;
  color:rgba(244,247,243,.78);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-nav__link:hover,
.footer-nav__link:focus-visible{color:var(--cyan);border-bottom-color:var(--line-cyan)}
.footer-contact__list{display:grid;gap:.85rem}
.footer-contact__label{
  display:block;
  margin-bottom:.15rem;
  font-family:var(--font-mono);
  font-size:.625rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--stand);
}
.footer-contact__value{
  display:block;
  font-family:var(--font-mono);
  font-size:.8125rem;
  line-height:1.6;
  color:var(--mist);
  word-break:break-word;
}
.footer-contact__value--text{
  font-family:var(--font-body);
  font-size:.875rem;
  line-height:1.65;
  color:rgba(244,247,243,.82);
}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  justify-content:space-between;
  gap:.5rem 1.75rem;
  padding-top:1.25rem;
  border-top:1px solid rgba(244,247,243,.06);
  font-size:.75rem;
  color:rgba(244,247,243,.58);
}
.footer-legal{
  font-family:var(--font-mono);
  letter-spacing:.03em;
  max-width:none;
}
.footer-note{max-width:46em}

/* ---------- 16. 滚动显现 ---------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
}
html.js [data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 17. 响应式 ---------- */
@media (max-width:1080px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    left:0;
    right:0;
    top:100%;
    z-index:6;
    max-height:min(72vh,540px);
    overflow-y:auto;
    padding:.4rem 0 1rem;
    margin-left:0;
    background:var(--night);
    border-top:1px solid var(--line-cyan);
    border-bottom:1px solid var(--line-cyan);
    box-shadow:0 30px 44px -32px rgba(0,0,0,.95);
    visibility:hidden;
    opacity:0;
    transform:translateY(-10px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s var(--ease);
  }
  .site-nav[data-open="true"]{visibility:visible;opacity:1;transform:none}
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    padding-inline:var(--gutter);
  }
  .site-nav__link{
    padding:.9rem .9rem .9rem 1.1rem;
    font-size:1rem;
    border-bottom:1px solid rgba(244,247,243,.08);
  }
  .site-nav__link::after{left:1.1rem;right:auto;width:20px;bottom:.6rem}
  .site-nav__link::before{left:0}
  .brand__sub{display:none}
}

@media (max-width:900px){
  .header-strip__inner{grid-template-columns:1fr auto;gap:.75rem}
  .strip-metrics{display:none}
  .site-header.is-compact .strip-status__text{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
  .grid--7-5,.grid--8-4,.grid--5-7,.grid--3col,.grid--2col{grid-template-columns:1fr}
}

@media (max-width:620px){
  :root{--gutter:1.15rem;--cut:16px}
  .header-bar__inner{min-height:58px}
  .brand__name{font-size:1rem}
  .btn{font-size:.8125rem;padding:.7rem 1rem}
  .btn--sm{padding:.45rem .65rem;font-size:.6875rem}
  .footer-grid{grid-template-columns:1fr;gap:2rem}
  .footer-base{flex-direction:column;align-items:flex-start}
  .band--slant{padding-top:calc(var(--slant-h) + 2rem)}
}

@media (max-width:400px){
  .strip-status__version{display:none}
}

/* ---------- 18. 动效降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{opacity:1 !important;transform:none !important;transition:none !important}
  .progress__bar{transition:none !important}
  .btn:hover,.cut-card:hover{transform:none !important}
}