/* ==========================================================================
   完美体育赛事 — /assets/site.css
   共享外壳：夜场灯下的出版式资料台
   ========================================================================== */

/* 1. 设计令牌 */
:root{
  --space:#081426;
  --night:#102A4C;
  --night-lift:#16375F;
  --paper:#F4E9D4;
  --paper-soft:#FBF3E2;
  --ink:#1A1410;
  --lime:#B8FF3D;
  --orange:#FF7A1A;
  --red:#E34B2B;
  --sage:#8FA38F;
  --ice:#9BC7E8;
  --cream:#FFF9EE;
  --muted-ink:#6F6556;

  --r-pill:999px;
  --r-card:18px;
  --w-max:1240px;
  --w-wide:1440px;
  --gutter:clamp(16px,4vw,40px);

  --shadow-card:8px 8px 0 var(--ink), 12px 12px 0 rgba(184,255,61,.28);
  --shadow-hard:8px 8px 0 rgba(26,20,16,.55);

  --font-sans:"Noto Sans SC","PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* 2. Reset */
*,*::before,*::after{box-sizing:border-box}
html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  overflow-x:clip;
}
@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}
body{
  margin:0;
  min-height:100vh;
  background-color:var(--space);
  background-image:
    radial-gradient(92% 62% at 6% -10%, rgba(184,255,61,.16), transparent 58%),
    radial-gradient(70% 52% at 98% 0%, rgba(255,122,26,.14), transparent 62%),
    linear-gradient(180deg,#0A1830 0%, #081426 44%, #061020 100%);
  background-repeat:no-repeat;
  color:var(--cream);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;margin:0;padding:0}
img,svg,video{display:block;max-width:100%}
img{height:auto}
button{font:inherit;color:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
::selection{background:var(--lime);color:var(--ink)}

/* 3. 基础排版 */
h1,h2,h3,h4{font-weight:800;line-height:1.2;letter-spacing:-.01em;color:var(--cream)}
h1{font-size:clamp(2.4rem,6.6vw,5.4rem);font-weight:300;letter-spacing:-.035em;line-height:1.04}
h2{font-size:clamp(1.6rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.15rem,2.2vw,1.5rem)}
h4{font-size:clamp(1rem,1.8vw,1.15rem)}
strong{font-weight:800}
code,kbd,samp{font-family:var(--font-mono)}

/* 4. 可达性与工具类 */
:where(a,button,summary,[tabindex]):focus-visible{
  outline:3px solid var(--lime);
  outline-offset:3px;
}
.card--paper :where(a,button):focus-visible,
.prose :where(a,button):focus-visible,
.site-footer__contact :where(a,button):focus-visible{
  outline-color:var(--ink);
  outline-offset:2px;
}
.sr-only{
  position:absolute;
  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:fixed;
  top:10px;left:10px;
  z-index:200;
  display:inline-block;
  padding:10px 18px;
  border:2px solid var(--ink);
  border-radius:12px;
  background:var(--lime);
  color:var(--ink);
  font-weight:800;
  letter-spacing:.02em;
  box-shadow:4px 4px 0 rgba(26,20,16,.6);
  transform:translateY(-180%);
  transition:transform .18s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0)}
.muted{color:var(--sage)}
.rule{
  height:1px;
  border:0;
  background:rgba(255,249,238,.16);
  margin:clamp(20px,4vw,40px) 0;
}
#main-content{scroll-margin-top:96px}

/* 5. 布局 */
.container{
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{max-width:860px}
.site-main{display:block;padding-top:clamp(8px,2vw,20px)}
.section{padding-block:clamp(22px,5vw,56px)}
.stack{display:flex;flex-direction:column;gap:clamp(12px,2vw,20px)}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px}
.grid{display:grid;gap:clamp(14px,2.4vw,26px)}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,300px),1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,230px),1fr))}
.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:10px 24px;
  margin-bottom:clamp(14px,2.4vw,24px);
}
.section-title{
  margin:0;
  font-size:clamp(1.4rem,3vw,2.1rem);
  font-weight:800;
  line-height:1.15;
  letter-spacing:-.01em;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lime);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:currentColor;
}

/* 6. 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border:2px solid var(--ink);
  border-radius:var(--r-pill);
  background:var(--paper);
  color:var(--ink);
  font-size:.95rem;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.02em;
  text-decoration:none;
  cursor:pointer;
  box-shadow:4px 4px 0 rgba(26,20,16,.65);
  transition:transform .16s var(--ease),box-shadow .16s var(--ease),background .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.btn:hover{
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(26,20,16,.7);
}
.btn:active{
  transform:translate(0,0);
  box-shadow:2px 2px 0 rgba(26,20,16,.6);
}
.btn--primary{background:var(--lime);color:var(--ink)}
.btn--primary:hover{background:#C9FF6B}
.btn--ghost{
  background:transparent;
  color:var(--cream);
  border-color:rgba(255,249,238,.42);
  box-shadow:none;
}
.btn--ghost:hover{
  border-color:var(--lime);
  color:var(--lime);
  background:rgba(184,255,61,.08);
  box-shadow:none;
  transform:none;
}
.btn--small{
  padding:9px 16px;
  font-size:.82rem;
  box-shadow:3px 3px 0 rgba(26,20,16,.6);
}
.btn--small:hover{box-shadow:4px 4px 0 rgba(26,20,16,.65)}

/* 7. 筛选条与标签 */
.chip-row{
  display:flex;
  gap:8px;
  padding:4px 2px 12px;
  overflow-x:auto;
  -webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.chip{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:8px 15px;
  border:1.5px solid rgba(255,249,238,.28);
  border-radius:var(--r-pill);
  background:rgba(16,42,76,.66);
  color:var(--cream);
  font-family:inherit;
  font-size:.82rem;
  font-weight:700;
  letter-spacing:.04em;
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease),background .16s var(--ease);
}
.chip:hover{border-color:var(--lime);color:var(--lime)}
.chip[aria-pressed="true"]{
  background:var(--lime);
  border-color:var(--ink);
  color:var(--ink);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border:1px solid currentColor;
  border-radius:var(--r-pill);
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--ice);
}
.tag--lime{color:var(--lime)}
.tag--orange{color:var(--orange)}
.tag--red{color:var(--red)}
.tag--ink{color:var(--ink)}

/* 8. 卡片、数据与目录 */
.card{
  position:relative;
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(16px,2.4vw,24px);
  border:2px solid rgba(255,249,238,.16);
  border-radius:var(--r-card);
  background:rgba(16,42,76,.55);
  color:var(--cream);
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.card:hover,
.card:focus-within{
  border-color:var(--lime);
  transform:translateY(-2px);
  box-shadow:0 16px 32px rgba(0,0,0,.35);
}
.card--paper{
  background:var(--paper);
  color:var(--ink);
  border:3px solid var(--ink);
  border-radius:var(--r-card);
  box-shadow:var(--shadow-card);
}
.card--paper:hover,
.card--paper:focus-within{
  border-color:var(--ink);
  box-shadow:8px 8px 0 var(--ink), 14px 14px 0 rgba(255,122,26,.4);
}
.card__title{
  margin:0;
  font-size:clamp(1.05rem,2vw,1.3rem);
  font-weight:800;
  line-height:1.3;
  color:inherit;
}
.card__meta{
  font-family:var(--font-mono);
  font-size:.68rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sage);
}
.card--paper .card__meta{color:var(--muted-ink)}
.card__body{
  font-size:.94rem;
  line-height:1.72;
  color:inherit;
  opacity:.92;
}
.stat{
  display:flex;
  flex-direction:column;
  gap:4px;
  padding:12px 16px;
  border-left:3px solid var(--orange);
  border-radius:0 12px 12px 0;
  background:rgba(255,122,26,.09);
}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(1.5rem,4vw,2.4rem);
  font-weight:700;
  line-height:1;
  letter-spacing:-.02em;
  color:var(--orange);
}
.stat__label{
  font-size:.68rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sage);
}
.stat--lime{border-left-color:var(--lime);background:rgba(184,255,61,.09)}
.stat--lime .stat__value{color:var(--lime)}
.index-list{display:grid;margin:0;padding:0;list-style:none}
.index-list__item{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:baseline;
  gap:6px 14px;
  padding:12px 0;
  border-top:1px solid rgba(26,20,16,.18);
}
.index-list__item:last-child{border-bottom:1px solid rgba(26,20,16,.18)}
.index-list__num{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.08em;
  color:var(--orange);
}
.index-list__label{font-size:.98rem;font-weight:700;color:var(--ink)}
.index-list__meta{
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.06em;
  color:var(--muted-ink);
}
.note{
  padding:14px 16px;
  border:2px dashed rgba(184,255,61,.42);
  border-radius:14px;
  background:rgba(184,255,61,.07);
  color:var(--cream);
  font-size:.9rem;
  line-height:1.7;
}

/* 9. 面包屑、正文、图片容器 */
.breadcrumbs{
  font-size:.78rem;
  letter-spacing:.04em;
  color:var(--sage);
}
.breadcrumbs__list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;list-style:none;margin:0;padding:0}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:6px}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:rgba(143,163,143,.6)}
.breadcrumbs__link{
  color:var(--cream);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.breadcrumbs__link:hover{color:var(--lime);border-bottom-color:var(--lime)}
.breadcrumbs__item[aria-current="page"]{color:var(--lime)}
.prose{
  color:var(--ink);
  font-size:1.02rem;
  line-height:1.85;
}
.prose > * + *{margin-top:1.05em}
.prose h2{font-size:clamp(1.35rem,2.4vw,1.9rem);line-height:1.26;color:var(--ink)}
.prose h3{font-size:clamp(1.1rem,1.9vw,1.35rem);color:var(--ink)}
.prose p{color:var(--ink)}
.prose a{
  color:var(--ink);
  text-decoration:underline;
  text-decoration-color:var(--orange);
  text-decoration-thickness:2px;
  text-underline-offset:3px;
}
.prose a:hover{text-decoration-color:var(--lime)}
.prose ul,.prose ol{list-style:disc;padding-left:1.25em;color:var(--ink)}
.prose ol{list-style:decimal}
.prose li + li{margin-top:.4em}
.prose blockquote{
  padding:12px 18px;
  border-left:4px solid var(--orange);
  background:rgba(255,122,26,.09);
  color:var(--ink);
}
.prose--invert,.prose--invert p,.prose--invert h2,.prose--invert h3,
.prose--invert ul,.prose--invert ol,.prose--invert li,.prose--invert blockquote{color:var(--cream)}
.prose--invert a{color:var(--lime);text-decoration-color:var(--orange)}
.figure{display:grid;gap:8px;margin:0}
.figure__media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  border:3px solid var(--ink);
  border-radius:var(--r-card);
  background:linear-gradient(155deg,var(--night-lift),var(--space));
  box-shadow:8px 8px 0 rgba(26,20,16,.5);
}
.figure__img,
.figure__media img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure__caption{
  font-size:.78rem;
  line-height:1.6;
  letter-spacing:.03em;
  color:var(--sage);
}
.card--paper .figure__caption{color:var(--muted-ink)}
.figure--tall .figure__media{aspect-ratio:3 / 4}
.figure--square .figure__media{aspect-ratio:1 / 1}

/* 10. 悬浮胶囊头部 */
.scroll-meter{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  height:3px;
  background:rgba(255,249,238,.08);
  overflow:hidden;
  pointer-events:none;
}
.scroll-meter__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--lime),var(--orange));
  box-shadow:0 0 12px rgba(184,255,61,.55);
  transition:width .12s linear;
}
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  padding-block:10px;
  pointer-events:none;
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:calc(100% + 26px);
  z-index:-1;
  background:linear-gradient(180deg,rgba(6,16,32,.94) 0%,rgba(6,16,32,.55) 60%,rgba(6,16,32,0) 100%);
  pointer-events:none;
}
.site-header__inner{
  position:relative;
  z-index:2;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  width:100%;
  max-width:var(--w-wide);
  margin-inline:auto;
  padding-inline:clamp(12px,2.4vw,28px);
}
.brand{
  pointer-events:auto;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:6px 18px 6px 6px;
  border:2px solid var(--ink);
  border-radius:var(--r-pill);
  background:var(--paper);
  color:var(--ink);
  text-decoration:none;
  box-shadow:5px 5px 0 rgba(184,255,61,.72);
  transition:box-shadow .18s var(--ease),transform .18s var(--ease);
}
.brand:hover{
  transform:translate(-1px,-1px);
  box-shadow:7px 7px 0 rgba(184,255,61,.85);
}
.brand__mark{
  display:grid;
  place-items:center;
  width:38px;
  height:38px;
  border:2px solid var(--ink);
  border-radius:50%;
  background:var(--lime);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:.85rem;
  font-weight:700;
  letter-spacing:.02em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:1rem;font-weight:800;letter-spacing:.01em}
.brand__tagline{
  font-family:var(--font-mono);
  font-size:.6rem;
  letter-spacing:.12em;
  color:var(--muted-ink);
}
.brand--footer{box-shadow:6px 6px 0 rgba(0,0,0,.5)}
.brand--footer:hover{box-shadow:8px 8px 0 rgba(184,255,61,.55)}
.main-nav{
  pointer-events:auto;
  display:flex;
  align-items:center;
  gap:6px;
  padding:6px 8px 6px 8px;
  border:2px solid rgba(184,255,61,.34);
  border-radius:var(--r-pill);
  background:rgba(16,42,76,.94);
  box-shadow:0 14px 32px rgba(2,8,18,.48);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}
.main-nav__title{display:none}
.main-nav__list{display:flex;align-items:center;gap:2px;list-style:none;margin:0;padding:0}
.main-nav__item{margin:0}
.main-nav__link{
  display:inline-block;
  padding:8px 13px;
  border-radius:var(--r-pill);
  color:var(--cream);
  font-size:.88rem;
  font-weight:600;
  letter-spacing:.01em;
  white-space:nowrap;
  transition:background .16s var(--ease),color .16s var(--ease);
}
.main-nav__link:hover{background:rgba(184,255,61,.16);color:var(--lime)}
.main-nav__link[aria-current="page"]{background:var(--lime);color:var(--ink);font-weight:800}
.main-nav__cta{
  margin-left:4px;
  padding:9px 16px;
  border-width:2px;
  font-size:.84rem;
  box-shadow:none;
}
.main-nav__cta:hover{
  transform:none;
  background:#C9FF6B;
  box-shadow:0 0 0 3px rgba(184,255,61,.22);
}
.nav-toggle{display:none}
.nav-scrim{display:none}
.site-header[data-scrolled="true"] .brand{box-shadow:5px 5px 0 rgba(184,255,61,.95)}

/* 11. 页脚 */
.site-footer{
  position:relative;
  margin-top:clamp(52px,9vw,120px);
  padding-block:clamp(36px,6vw,72px) clamp(26px,4vw,40px);
  overflow:hidden;
  border-top:1px solid rgba(184,255,61,.22);
  background-color:var(--space);
  background-image:linear-gradient(180deg,#071527 0%,#050E1C 100%);
  color:var(--cream);
}
.site-footer::before{
  content:"";
  position:absolute;
  right:-16%;
  bottom:-58%;
  width:min(680px,82vw);
  aspect-ratio:1 / 1;
  border:1px solid rgba(184,255,61,.18);
  border-radius:50%;
  box-shadow:0 0 0 70px rgba(184,255,61,.035);
  pointer-events:none;
}
.site-footer::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:repeating-linear-gradient(90deg,rgba(255,249,238,.045) 0 1px,transparent 1px 120px);
  pointer-events:none;
}
.site-footer__inner{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--w-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.site-footer__mast{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  align-items:start;
  gap:clamp(22px,4vw,52px);
  padding-bottom:clamp(24px,4vw,40px);
  border-bottom:2px solid rgba(255,249,238,.14);
}
.site-footer__brand-col{
  display:flex;
  flex-direction:column;
  align-items:flex-start;
  gap:16px;
}
.site-footer__summary{
  max-width:46ch;
  font-size:1rem;
  line-height:1.8;
  color:rgba(255,249,238,.78);
}
.site-footer__cta{margin-top:2px}
.site-footer__contact{
  display:grid;
  gap:8px;
  padding:clamp(18px,3vw,26px);
  border:3px solid var(--ink);
  border-radius:var(--r-card);
  background:var(--paper);
  color:var(--ink);
  box-shadow:10px 10px 0 rgba(184,255,61,.85);
}
.site-footer__label{
  margin-bottom:2px;
  font-family:var(--font-mono);
  font-size:.66rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--orange);
}
.site-footer__value{
  font-family:var(--font-mono);
  font-size:.95rem;
  font-weight:600;
  line-height:1.45;
  color:var(--ink);
  overflow-wrap:anywhere;
}
.site-footer__value--muted{
  font-family:var(--font-sans);
  font-size:.86rem;
  font-weight:500;
  color:var(--muted-ink);
}
.site-footer__note{
  margin-top:2px;
  padding-top:10px;
  border-top:1px solid rgba(26,20,16,.18);
  font-size:.78rem;
  line-height:1.65;
  color:var(--muted-ink);
}
.site-footer__grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(180px,1fr));
  gap:clamp(18px,3vw,32px);
  padding-block:clamp(22px,4vw,36px);
}
.site-footer__col{min-width:0}
.site-footer__col-title{
  display:flex;
  align-items:baseline;
  gap:10px;
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:.7rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--lime);
}
.site-footer__col-index{font-size:.66rem;color:rgba(255,249,238,.34)}
.site-footer__links{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.site-footer__link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:rgba(255,249,238,.82);
  font-size:.94rem;
  transition:color .16s var(--ease);
}
.site-footer__link::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--lime);
  opacity:.5;
  transition:opacity .16s var(--ease),transform .16s var(--ease);
}
.site-footer__link:hover{color:var(--lime)}
.site-footer__link:hover::before{opacity:1;transform:scale(1.35)}
.site-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  padding-top:18px;
  border-top:1px solid rgba(255,249,238,.14);
}
.site-footer__copy{
  font-family:var(--font-mono);
  font-size:.72rem;
  letter-spacing:.06em;
  color:rgba(255,249,238,.55);
}
.site-footer__legal-links{display:flex;flex-wrap:wrap;gap:8px 18px;margin:0;padding:0;list-style:none}
.site-footer__link--legal{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.08em}
.site-footer__link--legal::before{display:none}

/* 12. 进入视口的轻微显现 */
html.js-motion [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
html.js-motion [data-reveal].is-visible{opacity:1;transform:none}

/* 13. 响应式：平板与移动端 */
@media (max-width:1040px){
  .site-header{padding-block:8px}
  .main-nav{
    position:fixed;
    top:0;right:0;bottom:0;
    z-index:82;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    width:min(86vw,380px);
    padding:clamp(20px,5vw,30px);
    padding-top:clamp(28px,7vw,44px);
    overflow-y:auto;
    border:3px solid var(--ink);
    border-right:0;
    border-radius:24px 0 0 24px;
    background:var(--night);
    box-shadow:-24px 0 60px rgba(0,0,0,.55);
    transform:translateX(106%);
    transition:transform .2s var(--ease);
  }
  .site-header[data-open="true"] .main-nav{transform:none}
  .main-nav__title{
    display:block;
    margin:0 0 12px;
    font-family:var(--font-mono);
    font-size:.68rem;
    letter-spacing:.2em;
    text-transform:uppercase;
    color:var(--lime);
  }
  .main-nav__list{flex-direction:column;align-items:stretch;gap:6px}
  .main-nav__link{
    display:block;
    padding:13px 16px;
    border:1px solid rgba(255,249,238,.14);
    border-radius:14px;
    font-size:1.02rem;
  }
  .main-nav__link[aria-current="page"]{border-color:var(--ink)}
  .main-nav__cta{
    margin:14px 0 0;
    padding:14px 18px;
    font-size:1rem;
    box-shadow:4px 4px 0 rgba(26,20,16,.7);
  }
  .nav-scrim{
    display:block;
    position:fixed;
    inset:0;
    z-index:78;
    background:rgba(3,9,18,.66);
    opacity:0;
    visibility:hidden;
    pointer-events:none;
    transition:opacity .2s var(--ease),visibility .2s var(--ease);
  }
  .site-header[data-open="true"] .nav-scrim{
    opacity:1;
    visibility:visible;
    pointer-events:auto;
  }
  .nav-toggle{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:10px;
    position:fixed;
    left:50%;
    bottom:18px;
    z-index:86;
    transform:translateX(-50%);
    padding:12px 24px;
    border:3px solid var(--ink);
    border-radius:var(--r-pill);
    background:var(--lime);
    color:var(--ink);
    font-weight:800;
    font-size:.95rem;
    letter-spacing:.08em;
    cursor:pointer;
    box-shadow:0 12px 26px rgba(0,0,0,.45);
  }
  .nav-toggle__text{line-height:1}
  .nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
  .nav-toggle__bar{
    display:block;
    height:2px;
    width:100%;
    border-radius:2px;
    background:var(--ink);
    transition:transform .18s var(--ease),opacity .18s var(--ease);
  }
  .site-header[data-open="true"] .nav-toggle__bar:first-child{transform:translateY(6px) rotate(45deg)}
  .site-header[data-open="true"] .nav-toggle__bar:last-child{transform:translateY(-6px) rotate(-45deg)}
  body.is-nav-open{overflow:hidden}
  .site-footer{padding-bottom:110px}
}

@media (max-width:860px){
  .site-footer__mast{grid-template-columns:1fr}
  .site-footer__summary{max-width:none}
  .site-footer__contact{box-shadow:8px 8px 0 rgba(184,255,61,.8)}
}

@media (max-width:720px){
  :root{--gutter:16px}
  body{font-size:15.5px}
  .brand__tagline{display:none}
  .brand{padding:5px 14px 5px 5px}
  .brand__mark{width:34px;height:34px;font-size:.78rem}
  .brand__name{font-size:.95rem}
  .site-footer__legal{flex-direction:column;align-items:flex-start}
  .btn{padding:11px 18px}
  .btn--small{padding:9px 14px}
}

@media (max-width:420px){
  .brand__name{font-size:.88rem}
  .nav-toggle{padding:11px 20px;font-size:.9rem}
  .site-footer__grid{grid-template-columns:1fr 1fr}
}

/* 14. 减弱动效偏好 */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  html.js-motion [data-reveal]{opacity:1;transform:none}
  .scroll-meter__bar{transition:none}
}