:root{
  --night:#0A1A12;
  --turf-deep:#12351F;
  --turf-mid:#1F5C36;
  --glow:#2FE3C6;
  --glow-soft:#A6F5E4;
  --signal:#FF6A2B;
  --referee:#E03B3B;
  --violet:#6E4BE0;
  --azure:#2B7BE0;
  --cold:#C3CFC9;
  --note:#7C8C85;
  --paper:#F1F6F3;

  --rail:96px;
  --topbar:62px;
  --max:1180px;

  --font-sans:system-ui,-apple-system,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans CJK SC",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --shadow-hard:6px 6px 0 rgba(0,0,0,.55);
  --line-soft:2px solid rgba(166,245,228,.20);
}

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  background:var(--night);
}

body{
  margin:0;
  padding-left:var(--rail);
  padding-top:var(--topbar);
  min-height:100vh;
  overflow-x:hidden;
  background:var(--night);
  color:var(--cold);
  font-family:var(--font-sans);
  font-size:17px;
  line-height:1.75;
  letter-spacing:.01em;
}

#main-content{display:block;min-height:60vh;}

h1,h2,h3,h4{
  margin:0 0 .6em;
  line-height:1.25;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--glow-soft);
}

p{margin:0 0 1em;}
p:last-child{margin-bottom:0;}

a{color:var(--glow);text-decoration:none;}
img{display:block;max-width:100%;height:auto;}
ul,ol{margin:0;padding:0;}

.num,.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-feature-settings:"tnum" 1;
}

.u-visually-hidden{
  position:absolute!important;
  width:1px;height:1px;
  margin:-1px;padding:0;
  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;
  transform:translateY(-220%);
  padding:10px 18px;
  background:var(--glow);
  color:var(--night);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  border:2px solid var(--night);
  box-shadow:4px 4px 0 var(--signal);
  transition:transform 160ms ease;
}
.skip-link:focus{transform:translateY(0);}

:focus-visible{
  outline:3px solid var(--signal);
  outline-offset:3px;
}

/* ============ 头部：侧边轨道 + 顶栏 ============ */
.site-header{
  position:fixed;
  inset:0;
  z-index:80;
  display:grid;
  grid-template-columns:var(--rail) minmax(0,1fr);
  grid-template-rows:var(--topbar) minmax(0,1fr);
  pointer-events:none;
  font-size:15px;
}
.site-header > *{pointer-events:auto;}

.site-header::after{
  content:"";
  position:fixed;
  top:var(--topbar);left:0;right:0;
  height:2px;
  background:var(--glow);
  transform:scaleX(var(--scroll-progress,0));
  transform-origin:left center;
  pointer-events:none;
  z-index:85;
}

.brand-plate{
  grid-column:1;
  grid-row:1;
  display:flex;
  align-items:center;
  justify-content:center;
  background:var(--turf-deep);
  border-right:var(--line-soft);
  border-bottom:var(--line-soft);
}
.brand-plate__link{
  width:100%;
  height:100%;
  display:flex;
  flex-direction:column;
  align-items:center;
  justify-content:center;
  gap:2px;
  color:var(--glow);
  transition:background-color 160ms ease,color 160ms ease;
}
.brand-plate__mark{
  font-size:24px;
  font-weight:800;
  line-height:1;
  letter-spacing:-.02em;
}
.brand-plate__code{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.22em;
  color:var(--note);
  transition:color 160ms ease;
}
.brand-plate__link:hover{background:var(--glow);color:var(--night);}
.brand-plate__link:hover .brand-plate__code{color:var(--turf-deep);}

.topbar{
  grid-column:2;
  grid-row:1;
  display:flex;
  align-items:center;
  gap:16px;
  padding:0 26px;
  background:rgba(10,26,18,.95);
  border-bottom:var(--line-soft);
}
.topbar__id{
  display:flex;
  align-items:baseline;
  gap:12px;
  margin-right:auto;
  min-width:0;
}
.topbar__brand{
  font-size:17px;
  font-weight:800;
  letter-spacing:.10em;
  color:var(--glow-soft);
  white-space:nowrap;
}
.topbar__tagline{
  font-size:13px;
  letter-spacing:.03em;
  color:var(--note);
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
}

.round-switch{
  display:flex;
  align-items:center;
  gap:4px;
  padding:4px 6px;
  background:var(--turf-deep);
  border:2px solid rgba(166,245,228,.30);
}
.round-switch__legend{
  padding:0 10px 0 4px;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--note);
  white-space:nowrap;
  border-right:1px solid rgba(166,245,228,.20);
}
.round-switch__step{
  appearance:none;
  width:28px;height:28px;
  display:grid;
  place-items:center;
  padding:0;
  background:transparent;
  border:0;
  color:var(--glow);
  font-family:var(--font-sans);
  font-size:20px;
  line-height:1;
  cursor:pointer;
  transition:background-color 160ms ease,color 160ms ease;
}
.round-switch__step:hover{background:var(--glow);color:var(--night);}
.round-switch__value{
  margin:0;
  min-width:118px;
  display:flex;
  align-items:baseline;
  justify-content:center;
  gap:8px;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:14px;
  letter-spacing:.04em;
}
.round-switch__season{color:var(--note);}
.round-switch__round{color:var(--glow);font-weight:700;}
.round-switch__value.is-pulsing{animation:roundPulse 280ms ease-out;}
@keyframes roundPulse{
  0%{text-shadow:0 0 0 rgba(47,227,198,0);}
  45%{text-shadow:0 0 16px rgba(47,227,198,.95);}
  100%{text-shadow:0 0 0 rgba(47,227,198,0);}
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  padding:8px 12px;
  background:var(--turf-deep);
  color:var(--glow-soft);
  border:2px solid rgba(166,245,228,.35);
  font-family:inherit;
  font-size:13px;
  letter-spacing:.12em;
  cursor:pointer;
  transition:background-color 160ms ease,color 160ms ease,border-color 160ms ease;
}
.nav-toggle:hover{background:var(--glow);color:var(--night);border-color:var(--glow);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform 160ms ease,opacity 160ms ease;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

.rail-nav{
  grid-column:1;
  grid-row:2;
  display:flex;
  flex-direction:column;
  min-height:0;
  overflow:hidden;
  background:rgba(10,26,18,.95);
  border-right:var(--line-soft);
}
.rail-nav__list{
  flex:1 1 auto;
  min-height:0;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:2px;
  padding:10px 0;
  list-style:none;
  overflow-y:auto;
  overflow-x:hidden;
  scrollbar-width:thin;
}
.rail-nav__link{
  display:block;
  padding:14px 9px;
  writing-mode:vertical-rl;
  text-orientation:upright;
  font-size:13.5px;
  letter-spacing:.16em;
  color:var(--cold);
  border:2px solid transparent;
  transition:color 160ms ease,background-color 160ms ease,border-color 160ms ease;
}
.rail-nav__link:hover{
  background:var(--glow);
  color:var(--night);
  border-color:var(--glow);
}
.rail-nav__link[aria-current="page"]{
  background:rgba(47,227,198,.10);
  color:var(--glow);
  border-color:rgba(47,227,198,.55);
}

.rail-foot{
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
  padding:12px 0 16px;
  border-top:var(--line-soft);
}
.rail-foot__pulse{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--glow);
  box-shadow:0 0 0 0 rgba(47,227,198,.7);
  animation:railPulse 2200ms ease-out infinite;
}
@keyframes railPulse{
  0%{box-shadow:0 0 0 0 rgba(47,227,198,.65);}
  70%{box-shadow:0 0 0 12px rgba(47,227,198,0);}
  100%{box-shadow:0 0 0 0 rgba(47,227,198,0);}
}
.to-top{
  appearance:none;
  padding:10px 8px;
  background:transparent;
  border:2px solid transparent;
  color:var(--note);
  font-family:inherit;
  font-size:12px;
  letter-spacing:.16em;
  writing-mode:vertical-rl;
  text-orientation:upright;
  cursor:pointer;
  transition:color 160ms ease,background-color 160ms ease,border-color 160ms ease;
}
.to-top:hover{background:var(--glow-soft);color:var(--night);border-color:var(--glow-soft);}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:9px 16px;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  letter-spacing:.06em;
  white-space:nowrap;
  border:2px solid transparent;
  cursor:pointer;
  transition:background-color 160ms ease,color 160ms ease,border-color 160ms ease,transform 160ms ease,box-shadow 160ms ease;
}
.btn--primary{
  background:var(--glow);
  color:var(--night);
  border-color:var(--glow);
  box-shadow:4px 4px 0 rgba(47,227,198,.22);
}
.btn--primary:hover{
  background:var(--night);
  color:var(--glow);
  transform:translate(-2px,-2px);
  box-shadow:6px 6px 0 rgba(47,227,198,.30);
}
.btn--ghost{
  background:transparent;
  color:var(--cold);
  border-color:rgba(166,245,228,.35);
}
.btn--ghost:hover{
  background:var(--turf-mid);
  color:var(--glow-soft);
  border-color:var(--glow);
  transform:translate(-2px,-2px);
  box-shadow:4px 4px 0 rgba(0,0,0,.5);
}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;
  overflow:hidden;
  background:var(--turf-deep);
  border-top:2px solid var(--glow);
  color:var(--cold);
}
.site-footer::before{
  content:"";
  position:absolute;
  right:-10%;
  bottom:-40%;
  width:62%;
  height:300px;
  background:linear-gradient(120deg,rgba(110,75,224,.34),rgba(43,123,224,.04));
  clip-path:polygon(20% 0,100% 0,100% 100%,0 100%);
  pointer-events:none;
}
.footer-inner{
  position:relative;
  z-index:1;
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding:56px 40px 36px;
}
.footer-head{
  padding-bottom:26px;
  margin-bottom:34px;
  border-bottom:var(--line-soft);
}
.footer-brand{
  margin:0 0 10px;
  font-size:clamp(30px,5vw,46px);
  font-weight:800;
  line-height:1.1;
  letter-spacing:.10em;
  color:var(--glow);
}
.footer-closing{
  margin:0;
  font-size:14px;
  letter-spacing:.02em;
  color:var(--note);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
}
.footer-col__title{
  margin:0 0 16px;
  padding-bottom:10px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.22em;
  color:var(--glow-soft);
  border-bottom:2px solid rgba(166,245,228,.24);
}
.footer-col__list{
  display:flex;
  flex-direction:column;
  gap:9px;
  list-style:none;
}
.footer-col__item{
  position:relative;
  padding-left:14px;
  font-size:14px;
  color:var(--note);
}
.footer-col__item::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:6px;
  height:2px;
  background:var(--turf-mid);
}
.footer-col__link{
  display:inline-block;
  font-size:15px;
  color:var(--cold);
  background-image:linear-gradient(var(--glow),var(--glow));
  background-repeat:no-repeat;
  background-position:0 100%;
  background-size:0 2px;
  padding-bottom:2px;
  transition:color 160ms ease,background-size 180ms ease;
}
.footer-col__link:hover{color:var(--glow);background-size:100% 2px;}
.footer-col__more{
  display:inline-block;
  margin-top:16px;
  padding-bottom:2px;
  font-size:13px;
  letter-spacing:.08em;
  color:var(--glow);
  border-bottom:2px solid rgba(47,227,198,.42);
  transition:color 160ms ease,border-color 160ms ease;
}
.footer-col__more:hover{color:var(--signal);border-color:var(--signal);}
.footer-meta{
  display:flex;
  flex-direction:column;
  gap:6px;
  margin-top:44px;
  padding-top:22px;
  border-top:var(--line-soft);
}
.footer-meta__line{
  margin:0;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--note);
}
.footer-meta__record{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--note);
  opacity:.9;
}

/* ============ 通用布局与组件 ============ */
.wrap{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding-left:40px;
  padding-right:40px;
}

.band{
  position:relative;
  padding:64px 0;
}
.band--deep{background:var(--turf-deep);}
.band--mid{background:var(--turf-mid);color:var(--paper);}
.band--mid h2,.band--mid h3{color:var(--paper);}
.band--paper{background:var(--paper);color:var(--turf-deep);}
.band--paper h1,.band--paper h2,.band--paper h3{color:var(--turf-deep);}
.band--paper .section-head__title{color:var(--turf-deep);}
.band--paper .section-head{border-bottom-color:rgba(18,53,31,.22);}
.band--paper .note,.band--paper .section-head__index{color:#4a6157;}
.band--paper a{color:#0f5a36;}

.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px;
  list-style:none;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--note);
}
.breadcrumb li{display:flex;align-items:center;gap:6px;}
.breadcrumb li + li::before{content:"›";color:var(--turf-mid);}
.breadcrumb a{
  color:var(--note);
  border-bottom:1px solid transparent;
  transition:color 160ms ease,border-color 160ms ease;
}
.breadcrumb a:hover{color:var(--glow);border-bottom-color:var(--glow);}

.section-head{
  display:flex;
  align-items:baseline;
  flex-wrap:wrap;
  gap:16px;
  margin-bottom:28px;
  padding-bottom:14px;
  border-bottom:var(--line-soft);
}
.section-head__index{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:13px;
  letter-spacing:.16em;
  color:var(--signal);
}
.section-head__title{
  margin:0;
  font-size:clamp(22px,3vw,30px);
  font-weight:800;
  line-height:1.25;
  letter-spacing:.02em;
  color:var(--glow-soft);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  font-size:12px;
  letter-spacing:.10em;
  color:var(--glow-soft);
  background:transparent;
  border:2px solid rgba(166,245,228,.35);
}
.tag--signal{border-color:var(--signal);color:var(--signal);}
.tag--alert{border-color:var(--referee);color:var(--referee);}
.tag--calm{border-color:rgba(166,245,228,.24);color:var(--note);}

.note{
  font-size:13px;
  letter-spacing:.02em;
  color:var(--note);
}
.note::before{
  content:"";
  display:inline-block;
  width:6px;height:6px;
  margin-right:8px;
  vertical-align:middle;
  background:var(--turf-mid);
}

.stat{display:flex;flex-direction:column;gap:4px;}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-size:clamp(34px,6vw,64px);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--glow);
}
.stat__label{
  font-size:13px;
  letter-spacing:.14em;
  color:var(--note);
}

.data-table{
  width:100%;
  border-collapse:collapse;
  font-size:15px;
}
.data-table th,
.data-table td{
  padding:10px 14px;
  text-align:left;
  border-bottom:1px solid rgba(166,245,228,.14);
}
.data-table thead th{
  background:var(--turf-deep);
  color:var(--glow-soft);
  font-size:12px;
  letter-spacing:.12em;
  border-bottom:2px solid rgba(166,245,228,.32);
}
.data-table tbody tr:nth-child(even){background:rgba(31,92,54,.24);}
.data-table tbody tr:hover{background:rgba(47,227,198,.08);}

.media{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/9;
  background:linear-gradient(135deg,var(--turf-deep),var(--night) 58%,var(--turf-mid));
  border:2px solid rgba(166,245,228,.22);
  box-shadow:var(--shadow-hard);
}
.media--portrait{aspect-ratio:3/4;}
.media--wide{aspect-ratio:21/9;}
.media img{width:100%;height:100%;object-fit:cover;}
.media__overlay{
  position:absolute;
  inset:0;
  background:linear-gradient(180deg,rgba(10,26,18,.08),rgba(10,26,18,.80));
  pointer-events:none;
}
.media__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:12px 16px;
  font-size:13px;
  letter-spacing:.02em;
  color:var(--glow-soft);
}

/* ============ 响应式 ============ */
@media (max-width:1100px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-cols{gap:22px;}
  .topbar__tagline{display:none;}
}

@media (max-width:900px){
  :root{--rail:0px;--topbar:58px;}

  body{padding-left:0;}

  .site-header{
    inset:0 0 auto 0;
    height:var(--topbar);
    grid-template-columns:none;
    grid-template-rows:none;
    display:flex;
    align-items:center;
    gap:8px;
    padding:0 10px 0 0;
    background:var(--night);
    border-bottom:2px solid rgba(166,245,228,.22);
    pointer-events:auto;
  }

  .brand-plate{
    flex:0 0 auto;
    width:52px;
    height:var(--topbar);
    border-right:var(--line-soft);
    border-bottom:0;
  }
  .brand-plate__mark{font-size:20px;}
  .brand-plate__code{display:none;}

  .topbar{
    flex:1 1 auto;
    min-width:0;
    gap:10px;
    padding:0 4px;
    background:transparent;
    border-bottom:0;
  }
  .topbar__id{margin-right:0;}
  .topbar__brand{font-size:15px;letter-spacing:.08em;}
  .topbar__tagline,
  .topbar__cta{display:none;}

  .round-switch{
    margin-left:auto;
    padding:3px 4px;
    border-width:2px;
  }
  .round-switch__legend{display:none;}
  .round-switch__value{min-width:82px;font-size:13px;gap:6px;}
  .round-switch__step{width:24px;height:24px;font-size:17px;}

  .nav-toggle{display:inline-flex;flex:0 0 auto;}

  .rail-nav{
    position:fixed;
    top:var(--topbar);
    left:0;
    bottom:0;
    width:min(84vw,340px);
    z-index:90;
    background:var(--night);
    border-right:2px solid var(--glow);
    box-shadow:8px 0 0 rgba(0,0,0,.5);
    transform:translateX(-101%);
    transition:transform 220ms cubic-bezier(.22,.61,.36,1);
    overflow-y:auto;
  }
  .rail-nav[data-open="true"]{transform:translateX(0);}

  .rail-nav__list{
    align-items:stretch;
    gap:0;
    padding:14px 0;
    overflow:visible;
  }
  .rail-nav__link{
    writing-mode:horizontal-tb;
    text-orientation:mixed;
    padding:16px 22px;
    font-size:17px;
    letter-spacing:.08em;
    border:0;
    border-left:4px solid transparent;
    border-bottom:1px solid rgba(166,245,228,.12);
  }
  .rail-nav__link:hover{
    background:var(--turf-mid);
    color:var(--glow-soft);
    border-left-color:var(--turf-mid);
  }
  .rail-nav__link[aria-current="page"]{
    background:rgba(47,227,198,.10);
    color:var(--glow);
    border-left-color:var(--glow);
    border-bottom-color:rgba(166,245,228,.12);
  }

  .rail-foot{display:none;}

  .wrap{padding-left:20px;padding-right:20px;}
  .band{padding:44px 0;}
  .footer-inner{padding:40px 20px 28px;}
  .footer-cols{grid-template-columns:1fr;gap:28px;}
  .footer-head{margin-bottom:26px;}
}

@media (max-width:760px){
  .grid--2,.grid--3{grid-template-columns:1fr;}
  .section-head{gap:10px;}
}

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