/* =========================================================
   亚星赛场 · 共享样式表 /assets/site.css
   夜间赛场指挥中心 · 堆叠面板 + 横向轨道 + 编辑目录
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root{
  color-scheme: dark;
  --void:#06101F;
  --deep:#0B1D33;
  --panel:#102A47;
  --line:#244B6B;
  --line-soft:rgba(36,75,107,.55);
  --cyan:#35F2D6;
  --orange:#FF8A3D;
  --red:#FF4D5E;
  --yellow:#FFD166;
  --text:#EAF6FF;
  --muted:#A9C1D4;
  --paper:#F2F8FB;
  --mint:#B8FFF3;

  --shell:1220px;
  --gutter:clamp(18px,4vw,44px);
  --radius:14px;
  --radius-sm:9px;

  --ff-serif:"Noto Serif SC","Songti SC","Source Han Serif SC","SimSun",serif;
  --ff-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --ff-cond:"Barlow Condensed","Oswald","Arial Narrow","Noto Sans SC",sans-serif;
  --ff-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --ease:cubic-bezier(.22,.61,.36,1);
  --dur:.2s;
}

/* ---------- 2. 重置与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
img,svg,video,canvas{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
a{color:inherit;text-decoration:none}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:132px;
}

body{
  margin:0;
  font-family:var(--ff-sans);
  font-size:17px;
  line-height:1.8;
  color:var(--text);
  background-color:var(--void);
  background-image:
    radial-gradient(1100px 560px at 84% -6%, rgba(53,242,214,.10), transparent 60%),
    radial-gradient(820px 480px at 4% 2%, rgba(255,138,61,.06), transparent 58%),
    radial-gradient(900px 700px at 50% 118%, rgba(53,242,214,.05), transparent 65%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4{font-weight:700;line-height:1.25;letter-spacing:.01em}
h1{font-family:var(--ff-serif);font-size:clamp(34px,5vw,62px)}
h2{font-family:var(--ff-serif);font-size:clamp(26px,3.2vw,38px)}
h3{font-family:var(--ff-sans);font-size:clamp(19px,2vw,24px)}
strong{font-weight:700;color:var(--text)}
small{font-size:13px}

/* ---------- 3. 可访问性 ---------- */
:where(a,button,input,select,textarea,summary,[tabindex]):focus-visible{
  outline:2px solid var(--cyan);
  outline-offset:3px;
  border-radius:3px;
}

.skip-link{
  position:absolute;
  left:14px;
  top:-120px;
  z-index:140;
  padding:10px 20px;
  border-radius:8px;
  background:var(--cyan);
  color:#04121d;
  font-weight:700;
  font-size:14px;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:14px;text-decoration:none}

/* ---------- 4. 布局骨架 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.section{padding-block:clamp(40px,7vw,84px)}
.section--tight{padding-block:clamp(26px,4vw,48px)}

.section__head{
  display:grid;
  gap:12px;
  max-width:64ch;
  margin-bottom:clamp(22px,3vw,36px);
}
.section__eyebrow{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--ff-mono);
  font-size:11.5px;
  line-height:1.4;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}
.section__eyebrow::before{
  content:"";
  width:28px;
  height:1px;
  flex:0 0 28px;
  background:var(--cyan);
  opacity:.85;
}
.section__title{
  font-family:var(--ff-serif);
  font-size:clamp(27px,3.4vw,40px);
  line-height:1.28;
  color:var(--text);
}
.section__lead{
  max-width:60ch;
  color:var(--muted);
  font-size:16px;
  line-height:1.85;
}

.grid{display:grid;gap:clamp(16px,2.6vw,30px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--8-4{grid-template-columns:minmax(0,8fr) minmax(0,4fr)}

/* ---------- 5. 品牌标记 ---------- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:var(--text);
}
.brand:hover{text-decoration:none}
.brand__mark{
  position:relative;
  width:36px;
  height:36px;
  flex:0 0 36px;
  border-radius:10px;
  border:1px solid rgba(53,242,214,.55);
  background:
    linear-gradient(145deg, rgba(53,242,214,.26), rgba(53,242,214,0) 68%),
    var(--deep);
  box-shadow:inset 0 0 0 1px rgba(6,16,31,.55), 0 0 20px -8px rgba(53,242,214,.85);
}
.brand__mark::before{
  content:"";
  position:absolute;
  inset:8px;
  border:1px solid rgba(53,242,214,.75);
  border-radius:50%;
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:0;
  margin:auto;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--orange);
  box-shadow:0 0 10px rgba(255,138,61,.95);
}
.brand__text{display:flex;flex-direction:column;line-height:1.2;min-width:0}
.brand__name{
  font-family:var(--ff-serif);
  font-weight:700;
  font-size:19px;
  letter-spacing:.05em;
  color:var(--text);
}
.brand__line{
  font-family:var(--ff-mono);
  font-size:10px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--cyan);
  opacity:.82;
}

/* ---------- 6. 动作按钮 ---------- */
.cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  flex:0 0 auto;
  padding:10px 18px;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--ff-sans);
  font-weight:700;
  font-size:14px;
  letter-spacing:.04em;
  white-space:nowrap;
  cursor:pointer;
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease),
             border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.cta:hover{text-decoration:none}
.cta--signal{
  background:linear-gradient(135deg,#FF9E5C,#FF7A28);
  color:#241003;
  box-shadow:0 12px 26px -14px rgba(255,138,61,.95);
}
.cta--signal:hover{box-shadow:0 14px 32px -12px rgba(255,138,61,1)}
.cta--ghost{
  border-color:rgba(53,242,214,.45);
  background:rgba(53,242,214,.07);
  color:var(--cyan);
}
.cta--ghost:hover{
  border-color:var(--cyan);
  background:rgba(53,242,214,.16);
}
.header-app{font-size:13px;padding:9px 16px}
.footer-cta{margin-top:18px;align-self:flex-start}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 26px;
  border-radius:10px;
  border:1px solid transparent;
  font-family:var(--ff-sans);
  font-size:15px;
  font-weight:700;
  letter-spacing:.04em;
  transition:background var(--dur) var(--ease), color var(--dur) var(--ease),
             border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn:hover{text-decoration:none}
.btn--primary{
  background:linear-gradient(135deg,#FF9E5C,#FF7A28);
  color:#20100a;
  box-shadow:0 18px 36px -20px rgba(255,138,61,.95);
}
.btn--primary:hover{box-shadow:0 20px 40px -18px rgba(255,138,61,1)}
.btn--ghost{
  border-color:rgba(53,242,214,.5);
  background:rgba(53,242,214,.06);
  color:var(--cyan);
}
.btn--ghost:hover{border-color:var(--cyan);background:rgba(53,242,214,.15)}
.btn--quiet{
  border-color:var(--line);
  background:rgba(16,42,71,.6);
  color:var(--text);
}
.btn--quiet:hover{border-color:rgba(53,242,214,.55);background:rgba(16,42,71,.9)}

/* ---------- 7. 页头 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg, rgba(6,16,31,.97), rgba(6,16,31,.88));
  -webkit-backdrop-filter:blur(16px);
  backdrop-filter:blur(16px);
  border-bottom:1px solid var(--line);
  box-shadow:0 18px 40px -34px rgba(0,0,0,.95);
}

.header-rail{
  border-bottom:1px solid var(--line-soft);
  background:linear-gradient(90deg, rgba(11,29,51,.95), rgba(6,16,31,.55) 56%, rgba(11,29,51,.95));
}
.header-rail__inner{
  display:flex;
  align-items:center;
  gap:clamp(14px,3vw,40px);
  min-height:66px;
  padding-block:10px;
}
.header-brief{
  flex:1 1 auto;
  min-width:0;
  max-width:46ch;
  color:var(--muted);
  font-size:13px;
  line-height:1.55;
  letter-spacing:.02em;
}

.header-deck{position:relative;background:rgba(6,16,31,.72)}
.header-deck::after{
  content:"";
  position:absolute;
  inset:auto 0 0;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,242,214,.42), transparent);
}
.header-deck__inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:54px;
}

.site-nav{min-width:0}
.site-nav__list{
  display:flex;
  align-items:stretch;
  gap:clamp(14px,2.4vw,34px);
  border-bottom:1px solid rgba(36,75,107,.75);
}
.site-nav__item{display:block}
.site-nav__link{
  position:relative;
  display:block;
  padding:15px 2px;
  font-family:var(--ff-cond);
  font-size:16.5px;
  font-weight:700;
  letter-spacing:.09em;
  color:var(--muted);
  transition:color var(--dur) var(--ease);
}
.site-nav__link:hover{color:var(--text);text-decoration:none}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:transparent;
  transition:background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.site-nav__link:hover::after{background:var(--line)}
.site-nav__link[aria-current="page"]{
  color:var(--cyan);
}
.site-nav__link[aria-current="page"]::after{
  background:var(--cyan);
  box-shadow:0 0 14px rgba(53,242,214,.7);
}

.header-meta{
  margin-left:auto;
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
  white-space:nowrap;
}
.live-dot{
  width:7px;
  height:7px;
  flex:0 0 7px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(53,242,214,.14);
  animation:pulse 2.6s ease-in-out infinite;
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.32}}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 15px;
  border-radius:10px;
  border:1px solid var(--line);
  background:rgba(16,42,71,.62);
  color:var(--text);
  font-family:var(--ff-cond);
  font-size:15px;
  font-weight:700;
  letter-spacing:.16em;
  transition:border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav-toggle:hover,.nav-toggle[aria-expanded="true"]{
  border-color:rgba(53,242,214,.6);
  background:rgba(53,242,214,.1);
}
.nav-toggle__bars{
  position:relative;
  width:18px;
  height:12px;
  flex:0 0 18px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  border-radius:2px;
  background:var(--cyan);
  transition:transform var(--dur) var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{bottom:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg)}
.nav-toggle__label{line-height:1}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,8vw,96px);
  border-top:1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(11,29,51,.42), rgba(6,16,31,1) 46%),
    var(--deep);
  color:var(--muted);
  font-size:14.5px;
  line-height:1.75;
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto;
  height:1px;
  background:linear-gradient(90deg, transparent, rgba(53,242,214,.75), rgba(255,138,61,.45), transparent);
}
.footer-top{padding-block:clamp(36px,6vw,66px)}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.55fr) minmax(0,.85fr) minmax(0,1.15fr);
  gap:clamp(24px,4vw,58px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-brand__tag{
  margin-top:18px;
  max-width:36ch;
  color:var(--muted);
  font-size:14.5px;
  line-height:1.8;
}
.footer-proof{
  display:grid;
  gap:7px;
  margin-top:18px;
  font-family:var(--ff-mono);
  font-size:12px;
  letter-spacing:.03em;
  color:rgba(169,193,212,.82);
}
.footer-proof li{position:relative;padding-left:15px;line-height:1.65}
.footer-proof li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  opacity:.72;
}
.footer-col{display:flex;flex-direction:column;min-width:0}
.footer-col__title{
  margin-bottom:16px;
  font-family:var(--ff-cond);
  font-size:12.5px;
  font-weight:700;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-list{display:grid;gap:9px}
.footer-list--contact{gap:14px}
.footer-list--contact li{display:flex;flex-direction:column;gap:2px;min-width:0}
.footer-link{
  color:var(--muted);
  font-size:14.5px;
  transition:color var(--dur) var(--ease);
}
.footer-link:hover{color:var(--cyan);text-decoration:none}
.footer-label{
  font-family:var(--ff-mono);
  font-size:10.5px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(169,193,212,.62);
}
.footer-value{
  color:var(--text);
  font-size:14px;
  line-height:1.65;
  word-break:break-word;
}
.footer-note{
  margin-top:16px;
  padding-left:12px;
  border-left:2px solid rgba(53,242,214,.35);
  font-size:12.5px;
  line-height:1.75;
  color:rgba(169,193,212,.78);
}
.footer-base{
  border-top:1px solid var(--line-soft);
  background:rgba(6,16,31,.62);
}
.footer-base__inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 26px;
  padding-block:18px;
  font-size:12.5px;
}
.footer-copy{color:rgba(169,193,212,.82)}
.footer-legal{display:flex;flex-wrap:wrap;gap:8px 20px;margin-left:auto}
.footer-legal__link{
  color:var(--muted);
  transition:color var(--dur) var(--ease);
}
.footer-legal__link:hover{color:var(--cyan);text-decoration:none}
.footer-icp{
  font-family:var(--ff-mono);
  letter-spacing:.06em;
  color:var(--muted);
}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb{margin-block:clamp(16px,2.4vw,26px)}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--ff-mono);
  font-size:11.5px;
  letter-spacing:.12em;
  color:var(--muted);
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__item + .breadcrumb__item::before{
  content:"/";
  color:rgba(169,193,212,.42);
}
.breadcrumb__item a{color:var(--muted)}
.breadcrumb__item a:hover{color:var(--cyan);text-decoration:none}
.breadcrumb__item[aria-current="page"]{color:var(--text)}

/* ---------- 10. 正文容器 ---------- */
.prose{max-width:70ch;line-height:1.85}
.prose > * + *{margin-top:1.05em}
.prose h2{
  margin-top:1.9em;
  font-family:var(--ff-serif);
  font-size:clamp(23px,2.6vw,30px);
  line-height:1.35;
  color:var(--text);
}
.prose h3{
  margin-top:1.6em;
  font-family:var(--ff-sans);
  font-size:19px;
  color:var(--text);
}
.prose p{color:var(--muted)}
.prose strong{color:var(--text)}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose ul,.prose ol{display:grid;gap:.5em}
.prose ul li{position:relative;padding-left:1.15em;color:var(--muted)}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.78em;
  width:7px;
  height:1px;
  background:var(--cyan);
}
.prose ol{list-style:decimal;padding-left:1.3em;color:var(--muted)}
.prose blockquote{
  margin:1.6em 0;
  padding:6px 0 6px 18px;
  border-left:2px solid rgba(53,242,214,.6);
  font-family:var(--ff-serif);
  font-size:19px;
  line-height:1.7;
  color:var(--text);
}

/* ---------- 11. 面板 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,3vw,34px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(160deg, rgba(16,42,71,.94), rgba(11,29,51,.88));
  box-shadow:0 24px 52px -38px rgba(0,0,0,.98), inset 0 1px 0 rgba(234,246,255,.05);
}
.panel--rail{padding-left:clamp(26px,3.4vw,42px)}
.panel--rail::before{
  content:"";
  position:absolute;
  left:0;
  top:20px;
  bottom:20px;
  width:2px;
  border-radius:2px;
  background:linear-gradient(180deg, rgba(53,242,214,.95), rgba(53,242,214,0));
  box-shadow:0 0 16px -2px rgba(53,242,214,.65);
}
.panel__head{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:8px 16px;
  margin-bottom:16px;
}
.panel__title{
  font-family:var(--ff-cond);
  font-size:clamp(20px,2.2vw,26px);
  font-weight:700;
  letter-spacing:.06em;
  color:var(--text);
}

/* ---------- 12. 图片容器基础件 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(150deg, var(--deep), var(--panel));
  box-shadow:0 26px 54px -40px rgba(0,0,0,.98);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  border-radius:inherit;
  pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(53,242,214,.12);
}
.media-frame__img{
  width:100%;
  height:100%;
  object-fit:cover;
  aspect-ratio:16/10;
}
.media-frame--wide .media-frame__img{aspect-ratio:21/9}
.media-frame--tall .media-frame__img{aspect-ratio:3/4}
.media-frame__cap{
  position:absolute;
  inset:auto 0 0;
  padding:12px 16px;
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--mint);
  background:linear-gradient(180deg, transparent, rgba(6,16,31,.9));
}

/* ---------- 13. 标签 / 数据 / 轨道 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(16,42,71,.72);
  font-family:var(--ff-cond);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--muted);
  white-space:nowrap;
}
.tag--cyan{border-color:rgba(53,242,214,.5);background:rgba(53,242,214,.1);color:var(--cyan)}
.tag--orange{border-color:rgba(255,138,61,.5);background:rgba(255,138,61,.1);color:var(--orange)}
.tag--red{border-color:rgba(255,77,94,.5);background:rgba(255,77,94,.1);color:var(--red)}
.tag--yellow{border-color:rgba(255,209,102,.5);background:rgba(255,209,102,.1);color:var(--yellow)}

.stat{display:grid;gap:2px;min-width:0}
.stat__num{
  font-family:var(--ff-mono);
  font-size:clamp(26px,3vw,34px);
  font-weight:600;
  line-height:1.1;
  letter-spacing:-.01em;
  color:var(--text);
  font-variant-numeric:tabular-nums;
}
.stat__label{
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--muted);
}

.rail{
  position:relative;
  height:2px;
  border-radius:2px;
  background:rgba(36,75,107,.75);
}
.rail__fill{
  position:absolute;
  inset:0 auto 0 0;
  border-radius:2px;
  background:linear-gradient(90deg, var(--cyan), var(--mint));
  box-shadow:0 0 14px rgba(53,242,214,.55);
}

.note{
  padding-left:14px;
  border-left:2px solid rgba(53,242,214,.35);
  font-size:13px;
  line-height:1.75;
  color:var(--muted);
}

/* ---------- 14. 滚动进度 / 返回顶部 / 显现 ---------- */
.scroll-progress{
  position:fixed;
  left:0;
  top:0;
  z-index:150;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg, var(--cyan), var(--mint) 55%, var(--orange));
  pointer-events:none;
}

.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:70;
  padding:10px 16px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(11,29,51,.94);
  color:var(--text);
  font-family:var(--ff-cond);
  font-size:13px;
  font-weight:700;
  letter-spacing:.14em;
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
             visibility var(--dur) var(--ease), border-color var(--dur) var(--ease),
             color var(--dur) var(--ease);
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--cyan);color:var(--cyan)}

.js-ready [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity .42s var(--ease), transform .42s var(--ease);
}
.js-ready [data-reveal][data-revealed="true"]{
  opacity:1;
  transform:none;
}

/* ---------- 15. 平板 ---------- */
@media (max-width:1000px){
  .header-brief{display:none}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
}

@media (max-width:900px){
  html{scroll-padding-top:150px}
  .nav-toggle{display:inline-flex}
  .header-rail__inner{min-height:60px;padding-block:9px}
  .header-deck__inner{
    flex-wrap:wrap;
    gap:10px;
    min-height:56px;
    padding-block:9px;
  }
  .header-meta{display:none}
  .site-nav{
    order:3;
    flex:1 0 100%;
    display:none;
  }
  .site-nav[data-open="true"]{display:block}
  .site-nav__list{
    flex-direction:column;
    gap:0;
    border-bottom:0;
    padding-bottom:6px;
  }
  .site-nav__item{border-bottom:1px solid rgba(36,75,107,.42)}
  .site-nav__link{padding:13px 4px 13px 20px;font-size:17px}
  .site-nav__link::after{display:none}
  .site-nav__item .site-nav__link::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    width:7px;
    height:7px;
    margin-top:-3.5px;
    border-radius:50%;
    background:var(--line);
    transition:background var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
  }
  .site-nav__link[aria-current="page"]::before{
    background:var(--cyan);
    box-shadow:0 0 10px rgba(53,242,214,.85);
  }
  .grid--7-5,
  .grid--8-4,
  .grid--2{grid-template-columns:minmax(0,1fr)}
}

/* ---------- 16. 手机 ---------- */
@media (max-width:640px){
  body{font-size:16.5px;line-height:1.8}
  .brand__name{font-size:17.5px}
  .brand__line{font-size:9px;letter-spacing:.16em}
  .header-app{font-size:12px;padding:8px 13px}
  .grid--3{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-brand{grid-column:auto}
  .footer-base__inner{flex-direction:column;align-items:flex-start;gap:10px}
  .footer-legal{margin-left:0}
  .media-frame__cap{font-size:10px;letter-spacing:.1em}
}

@media (max-width:380px){
  .header-app{padding:8px 10px;font-size:11px}
  .brand__line{display:none}
}

/* ---------- 17. 减弱动效 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .js-ready [data-reveal]{opacity:1;transform:none}
  .to-top{transform:none}
  .live-dot{animation:none}
}