/* =========================================================
   /assets/site.css — 新利体育看台 共享外壳与基础系统
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#05140F;
  --ink-800:#0A211A;
  --ink-700:#10352A;
  --cyan-400:#43FFD0;
  --cyan-600:#0FB896;
  --orange-500:#FF5A36;
  --orange-300:#FF9A78;
  --paper:#ECF7F1;
  --muted:#9DB5AA;
  --line:#24473D;
  --line-soft:rgba(36,71,61,.62);
  --muted-dim:rgba(157,181,170,.72);

  --font-display:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-numeric:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1440px;
  --content:1200px;
  --gutter:clamp(16px,4vw,40px);
  --radius:2px;

  --ease:cubic-bezier(.2,.8,.2,1);
  --dur:220ms;
  --dur-fast:160ms;
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box}

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

body,
h1,h2,h3,h4,h5,h6,
p,figure,blockquote,dl,dd,ul,ol{margin:0}

ul[class],
ol[class]{padding:0;list-style:none}

button,input,select,textarea{font:inherit;color:inherit}

img,svg{display:block;max-width:100%}

a{color:inherit}

table{border-collapse:collapse;width:100%}

::selection{background:rgba(67,255,208,.3);color:var(--paper)}

/* ---------- 3. 基础排版与页面底色 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--paper);
  background-color:var(--ink-900);
  background-image:
    radial-gradient(115% 78% at 88% -12%, rgba(67,255,208,.10), transparent 56%),
    radial-gradient(90% 66% at 0% 0%, rgba(255,90,54,.07), transparent 52%),
    linear-gradient(rgba(36,71,61,.22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36,71,61,.22) 1px, transparent 1px);
  background-size:auto, auto, 120px 120px, 120px 120px;
  background-repeat:no-repeat, no-repeat, repeat, repeat;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.02em;
  color:var(--paper);
}

p{max-width:74ch}

a{text-decoration-thickness:1px;text-underline-offset:3px}

:focus-visible{
  outline:2px solid var(--cyan-400);
  outline-offset:3px;
  border-radius:2px;
}

/* ---------- 4. 排版工具 ---------- */
.display-xl{
  font-size:clamp(40px,6vw,76px);
  line-height:1.02;
  letter-spacing:-.03em;
}

.display-lg{
  font-size:clamp(32px,4.4vw,52px);
  line-height:1.06;
  letter-spacing:-.025em;
}

.display-md{
  font-size:clamp(24px,3vw,34px);
  line-height:1.16;
}

.tilt{display:inline-block;transform:skewX(-1.5deg)}

.numeric{
  font-family:var(--font-numeric);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  letter-spacing:.01em;
}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-numeric);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--muted);
}
.eyebrow::before{
  content:"";
  width:18px;
  height:1px;
  background:var(--cyan-400);
}

.lede{
  max-width:64ch;
  font-size:clamp(16px,1.5vw,18px);
  line-height:1.8;
  color:rgba(236,247,241,.86);
}

.rule{
  height:1px;
  border:0;
  margin-block:clamp(24px,3vw,40px);
  background:var(--line);
}

/* ---------- 5. 布局容器 ---------- */
.wrap{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.wrap--content{max-width:var(--content)}

.section{padding-block:clamp(32px,5vw,72px)}
.section--tight{padding-block:clamp(20px,3vw,36px)}

.split{
  display:grid;
  grid-template-columns:minmax(0,38fr) minmax(0,62fr);
  gap:clamp(20px,3vw,48px);
  align-items:start;
}
.split--34{grid-template-columns:minmax(0,34fr) minmax(0,66fr)}
.split--30{grid-template-columns:minmax(0,30fr) minmax(0,70fr)}
.split--28{grid-template-columns:minmax(0,28fr) minmax(0,72fr)}
.split--reverse>*:first-child{order:2}

.sticky-rail{position:sticky;top:132px}

.grid{display:grid;gap:clamp(16px,2vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}

/* ---------- 6. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 22px;
  border:1px solid transparent;
  border-radius:var(--radius);
  font-family:inherit;
  font-size:13.5px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.2;
  text-decoration:none;
  cursor:pointer;
  transition:
    background var(--dur-fast) var(--ease),
    border-color var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
}
.btn--primary{
  background:var(--cyan-400);
  color:var(--ink-900);
}
.btn--primary:hover{background:#6CFFDB;transform:translateY(-1px)}
.btn--ghost{
  border-color:var(--cyan-600);
  background:rgba(67,255,208,.06);
  color:var(--cyan-400);
}
.btn--ghost:hover{
  border-color:var(--cyan-400);
  background:rgba(67,255,208,.15);
}
.btn--alert{
  border-color:rgba(255,90,54,.6);
  background:rgba(255,90,54,.1);
  color:var(--orange-300);
}
.btn--alert:hover{
  border-color:var(--orange-500);
  background:rgba(255,90,54,.18);
}
.btn--quiet{
  border-color:var(--line);
  background:transparent;
  color:var(--paper);
}
.btn--quiet:hover{border-color:var(--muted);color:var(--cyan-400)}

/* ---------- 7. 标签与筛选 ---------- */
.chip-row{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
}

.chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:6px 13px;
  border:1px solid var(--line);
  border-radius:999px;
  background:transparent;
  color:var(--muted);
  font-family:inherit;
  font-size:12.5px;
  letter-spacing:.06em;
  cursor:pointer;
  transition:
    border-color var(--dur-fast) var(--ease),
    background var(--dur-fast) var(--ease),
    color var(--dur-fast) var(--ease);
}
.chip:hover{border-color:var(--cyan-600);color:var(--paper)}
.chip[aria-pressed="true"]{
  border-color:var(--cyan-400);
  background:rgba(67,255,208,.13);
  color:var(--paper);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line);
  border-radius:2px;
  font-family:var(--font-numeric);
  font-size:11px;
  letter-spacing:.06em;
  color:var(--muted);
}
.tag--live{
  border-color:rgba(67,255,208,.45);
  background:rgba(67,255,208,.1);
  color:var(--cyan-400);
}
.tag--alert{
  border-color:rgba(255,90,54,.45);
  background:rgba(255,90,54,.1);
  color:var(--orange-300);
}

/* ---------- 8. 卡片 ---------- */
.card{
  position:relative;
  padding:clamp(16px,2vw,24px);
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(168deg,var(--ink-800),var(--ink-900) 78%);
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease);
}
.card:hover{
  border-color:var(--cyan-600);
  box-shadow:0 0 0 1px rgba(67,255,208,.08), 0 14px 32px -22px rgba(0,0,0,.9);
}
.card--offset{margin-top:clamp(16px,3vw,40px)}
.card--alert{border-color:rgba(255,90,54,.5)}

.card-title{
  font-size:19px;
  font-weight:700;
  letter-spacing:-.01em;
  line-height:1.35;
}

.card-meta{
  font-family:var(--font-numeric);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--muted);
}

/* ---------- 9. 数据表与数字 ---------- */
.data-table{width:100%;font-size:14px}

.data-table caption{
  padding-bottom:10px;
  text-align:left;
  font-family:var(--font-numeric);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}

.data-table th,
.data-table td{
  padding:11px 12px;
  border-bottom:1px solid var(--line-soft);
  text-align:left;
  vertical-align:middle;
}

.data-table thead th{
  border-bottom:1px solid var(--line);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.1em;
  color:var(--muted);
}

.data-table tbody tr:hover{background:rgba(67,255,208,.05)}

.data-table .numeric{color:var(--cyan-400)}

.stat{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.stat-value{
  font-family:var(--font-numeric);
  font-size:clamp(24px,3vw,34px);
  font-weight:600;
  font-variant-numeric:tabular-nums;
  line-height:1;
  color:var(--cyan-400);
}

.stat-label{
  font-size:11.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

/* ---------- 10. 提示条 ---------- */
.notice{
  display:flex;
  gap:12px;
  padding:14px 18px;
  border:1px solid var(--line);
  border-left:2px solid var(--orange-500);
  border-radius:var(--radius);
  background:rgba(255,90,54,.07);
  font-size:14px;
  line-height:1.7;
  color:rgba(236,247,241,.9);
}
.notice--info{
  border-left-color:var(--cyan-400);
  background:rgba(67,255,208,.06);
}

/* ---------- 11. 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 10px;
  padding-block:16px;
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted);
}
.breadcrumb li{display:inline-flex;align-items:center;gap:10px}
.breadcrumb li+li::before{
  content:"/";
  color:var(--line);
}
.breadcrumb a{
  color:var(--muted);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease);
}
.breadcrumb a:hover{
  color:var(--cyan-400);
  border-bottom-color:var(--cyan-600);
}

/* ---------- 12. 正文 ---------- */
.prose{
  max-width:70ch;
  font-size:16.5px;
  line-height:1.85;
  color:rgba(236,247,241,.88);
}
.prose>*+*{margin-top:1.1em}
.prose h2{
  margin-top:1.8em;
  font-size:clamp(22px,2.4vw,28px);
  letter-spacing:-.015em;
}
.prose h3{
  margin-top:1.6em;
  font-size:19px;
}
.prose ul,
.prose ol{
  padding-left:1.3em;
  list-style:disc;
}
.prose ol{list-style:decimal}
.prose li+li{margin-top:.45em}
.prose strong{color:var(--paper)}
.prose a{
  color:var(--cyan-400);
  text-decoration:underline;
}
.prose blockquote{
  padding-left:16px;
  border-left:2px solid var(--cyan-600);
  color:var(--muted);
}

/* ---------- 13. 图片容器（页面阶段放占位） ---------- */
.figure{
  position:relative;
  overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(150deg,var(--ink-700),var(--ink-900));
}
.figure img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.74) brightness(.9) contrast(1.04);
}
.figure::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(5,20,15,0) 46%,rgba(5,20,15,.58) 100%);
}
.figure figcaption{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:1;
  padding:12px 16px;
  font-size:12px;
  letter-spacing:.05em;
  color:rgba(236,247,241,.84);
  background:linear-gradient(transparent,rgba(5,20,15,.82));
}
.figure--16x9{aspect-ratio:16/9}
.figure--4x3{aspect-ratio:4/3}
.figure--1x1{aspect-ratio:1/1}
.figure--tall{aspect-ratio:3/4}
.figure--wide{aspect-ratio:21/9}

/* ---------- 14. 滚动显现 ---------- */
.js [data-reveal]{
  opacity:0;
  transform:translateY(10px);
  transition:opacity 320ms var(--ease),transform 320ms var(--ease);
}
.js [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* =========================================================
   15. 头部
   ========================================================= */
.skip-link{
  position:fixed;
  left:16px;
  top:-72px;
  z-index:140;
  padding:10px 18px;
  border-radius:var(--radius);
  background:var(--cyan-400);
  color:var(--ink-900);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  text-decoration:none;
  transition:top var(--dur-fast) var(--ease);
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:var(--ink-900);
  border-bottom:1px solid var(--line);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:2px;
  background:linear-gradient(90deg,var(--cyan-400) 0%,var(--cyan-600) 38%,transparent 72%,var(--orange-500) 100%);
}

.scroll-meter{
  position:absolute;
  left:0;
  bottom:0;
  z-index:2;
  display:block;
  width:var(--meter,0%);
  height:2px;
  background:linear-gradient(90deg,var(--cyan-600),var(--cyan-400));
  transition:width 120ms linear;
}

.header-bar{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,24px);
  width:100%;
  max-width:var(--shell);
  min-height:66px;
  margin-inline:auto;
  padding:10px var(--gutter);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
  color:inherit;
  text-decoration:none;
}

.brand-mark{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  flex:0 0 auto;
  border:1px solid var(--cyan-400);
  border-radius:2px;
  background:rgba(67,255,208,.08);
  box-shadow:inset 0 0 12px rgba(67,255,208,.18);
  color:var(--cyan-400);
  font-family:var(--font-numeric);
  font-size:15px;
  font-weight:600;
  line-height:1;
  transform:skewX(-1.5deg);
}

.brand-text{
  display:flex;
  flex-direction:column;
  line-height:1.2;
  gap:2px;
}

.brand-name{
  font-size:15px;
  font-weight:800;
  letter-spacing:.01em;
  color:var(--paper);
}

.brand-sub{
  font-size:11px;
  letter-spacing:.1em;
  color:var(--muted);
}

.header-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  flex:0 0 auto;
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(67,255,208,.06);
  white-space:nowrap;
}

.status-dot{
  display:block;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan-400);
  box-shadow:0 0 0 3px rgba(67,255,208,.16);
  animation:statusPulse 2.6s var(--ease) infinite;
}

@keyframes statusPulse{
  0%,100%{opacity:1}
  50%{opacity:.35}
}

.header-status-text{
  font-family:var(--font-numeric);
  font-size:11.5px;
  font-weight:600;
  font-variant-numeric:tabular-nums;
  letter-spacing:.04em;
  color:var(--paper);
}

.header-utility{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}

.utility-link{
  padding:6px 2px;
  border-bottom:1px solid transparent;
  color:var(--muted);
  font-size:12.5px;
  letter-spacing:.08em;
  text-decoration:none;
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease);
}
.utility-link:hover,
.utility-link:focus-visible{
  color:var(--cyan-400);
  border-bottom-color:var(--cyan-600);
}

.utility-sep{
  color:var(--line);
  font-size:12px;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:8px;
  margin-left:auto;
  padding:8px 12px;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:transparent;
  color:var(--paper);
  font-family:inherit;
  font-size:12px;
  letter-spacing:.08em;
  cursor:pointer;
  transition:border-color var(--dur-fast) var(--ease),color var(--dur-fast) var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan-600);color:var(--cyan-400)}

.nav-toggle-bars{
  position:relative;
  display:block;
  width:16px;
  height:10px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:1.5px;
  background:currentColor;
  transition:transform 200ms var(--ease),top 200ms var(--ease),bottom 200ms 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-label{font-weight:600}

.site-nav{
  display:block;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,53,42,.5),rgba(5,20,15,0));
}

.nav-shell{
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.nav-list{
  display:flex;
  align-items:stretch;
  gap:2px;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.nav-list::-webkit-scrollbar{display:none}

.nav-item{display:flex}

.nav-link{
  position:relative;
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  padding:14px 15px;
  color:var(--muted);
  font-size:13px;
  letter-spacing:.06em;
  white-space:nowrap;
  text-decoration:none;
  transition:color var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease);
}
.nav-link::after{
  content:"";
  position:absolute;
  left:12px;
  right:12px;
  bottom:0;
  height:2px;
  background:var(--cyan-400);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform 200ms var(--ease);
}
.nav-link:hover,
.nav-link:focus-visible{
  color:var(--paper);
  background:rgba(67,255,208,.05);
}
.nav-link:hover .nav-index,
.nav-link:focus-visible .nav-index{color:var(--cyan-600)}

.nav-index{
  font-family:var(--font-numeric);
  font-size:10px;
  font-weight:600;
  letter-spacing:0;
  color:rgba(157,181,170,.5);
  transition:color var(--dur-fast) var(--ease);
}

.nav-link[aria-current="page"]{
  color:var(--paper);
  background:rgba(67,255,208,.09);
}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan-400)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.nav-note{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-left:auto;
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
  white-space:nowrap;
}
.nav-note::before{
  content:"";
  width:14px;
  height:1px;
  background:var(--orange-500);
}

/* =========================================================
   16. 页脚
   ========================================================= */
.site-footer{
  position:relative;
  margin-top:clamp(56px,8vw,120px);
  background:var(--ink-800);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:1px;
  background:linear-gradient(90deg,var(--orange-500),transparent 42%,transparent 58%,var(--cyan-400));
}

.footer-shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding:clamp(36px,5vw,64px) var(--gutter) 24px;
}

.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.25fr);
  gap:clamp(24px,4vw,48px);
}

.footer-brand{min-width:0}

.footer-lockup{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--paper);
  text-decoration:none;
}

.footer-lockup-text{
  font-size:17px;
  font-weight:800;
  letter-spacing:.01em;
}

.footer-tagline{
  max-width:30ch;
  margin-top:14px;
  font-size:14px;
  line-height:1.7;
  color:var(--muted);
}

.footer-batch{
  display:flex;
  align-items:center;
  gap:8px;
  margin-top:16px;
  font-size:11.5px;
  letter-spacing:.08em;
  color:var(--muted);
}

.footer-batch-no{
  padding:3px 9px;
  border:1px solid rgba(67,255,208,.4);
  border-radius:2px;
  background:rgba(67,255,208,.1);
  color:var(--cyan-400);
  font-size:11.5px;
}

.footer-col{min-width:0}

.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-numeric);
  font-size:11.5px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--orange-300);
}

.footer-links{
  display:flex;
  flex-direction:column;
  gap:9px;
}

.footer-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--muted);
  font-size:13.5px;
  text-decoration:none;
  transition:color var(--dur-fast) var(--ease);
}
.footer-link::before{
  content:"";
  width:10px;
  height:1px;
  background:var(--line);
  transition:width var(--dur-fast) var(--ease),background var(--dur-fast) var(--ease);
}
.footer-link:hover{color:var(--cyan-400)}
.footer-link:hover::before{width:18px;background:var(--cyan-400)}

.footer-contact{
  display:flex;
  flex-direction:column;
  gap:10px;
  min-width:0;
}

.footer-contact-item{
  display:flex;
  align-items:baseline;
  gap:10px;
  font-size:13px;
  line-height:1.6;
}

.footer-contact-label{
  flex:0 0 auto;
  min-width:2.6em;
  font-family:var(--font-numeric);
  font-size:10.5px;
  letter-spacing:.1em;
  color:var(--muted);
}

.footer-contact-value{
  color:var(--paper);
  word-break:break-word;
}

.footer-phone{
  font-family:var(--font-numeric);
  font-variant-numeric:tabular-nums;
  letter-spacing:.02em;
}

.footer-note{
  margin-top:6px;
  font-size:12px;
  line-height:1.72;
  color:var(--muted-dim);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 24px;
  margin-top:clamp(28px,4vw,48px);
  padding-top:20px;
  border-top:1px solid var(--line);
}

.footer-legal-list{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
}

.footer-legal-link{
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  color:var(--muted);
  font-size:12.5px;
  letter-spacing:.06em;
  text-decoration:none;
  transition:color var(--dur-fast) var(--ease),border-color var(--dur-fast) var(--ease);
}
.footer-legal-link:hover{
  color:var(--cyan-400);
  border-bottom-color:var(--cyan-600);
}

.footer-legal-meta{
  margin-left:auto;
  font-family:var(--font-numeric);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--muted-dim);
}

.footer-icp{white-space:nowrap}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  gap:8px 20px;
  margin-top:16px;
  font-size:11.5px;
  letter-spacing:.05em;
  color:rgba(157,181,170,.66);
}

/* =========================================================
   17. 响应式
   ========================================================= */
@media (max-width:1200px){
  .nav-note{display:none}
  .footer-grid{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr) minmax(0,1fr)}
  .footer-contact{grid-column:1 / -1}
}

@media (max-width:960px){
  html{scroll-padding-top:112px}

  .header-bar{
    display:grid;
    grid-template-columns:minmax(0,1fr) auto;
    gap:8px 12px;
    min-height:0;
    padding-block:10px;
  }
  .brand{grid-column:1;grid-row:1}
  .nav-toggle{
    display:inline-flex;
    grid-column:2;
    grid-row:1;
    justify-self:end;
    margin-left:0;
  }
  .header-status{
    grid-column:1 / -1;
    grid-row:2;
    justify-self:start;
    max-width:100%;
  }
  .header-utility{display:none}

  .site-nav{
    display:block;
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    transition:max-height 280ms var(--ease),visibility 0s linear 280ms;
  }
  .site-nav[data-open="true"]{
    max-height:72vh;
    overflow-y:auto;
    visibility:visible;
    transition:max-height 280ms var(--ease),visibility 0s linear 0s;
  }

  .nav-shell{
    display:block;
    padding:6px var(--gutter) 14px;
  }
  .nav-list{
    flex-direction:column;
    gap:0;
    overflow:visible;
  }
  .nav-item{width:100%}
  .nav-link{
    width:100%;
    padding:13px 4px;
    border-bottom:1px solid var(--line-soft);
    font-size:14px;
  }
  .nav-link::after{
    left:0;
    right:auto;
    width:3px;
    height:auto;
    top:8px;
    bottom:8px;
    transform:scaleY(0);
    transform-origin:top center;
  }
  .nav-link[aria-current="page"]::after{transform:scaleY(1)}

  .split,
  .split--34,
  .split--30,
  .split--28{grid-template-columns:minmax(0,1fr)}
  .split--reverse>*:first-child{order:0}
  .sticky-rail{position:static;top:auto}

  .grid--3,
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}

  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-legal-meta{margin-left:0}
}

@media (max-width:720px){
  .grid--2,
  .grid--3,
  .grid--4{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer-shell{padding-top:32px}
  .display-xl{font-size:clamp(34px,9vw,48px)}
}

@media (max-width:480px){
  :root{--gutter:16px}
  .brand-sub{display:none}
  .header-status-text{font-size:11px}
  .brand-mark{width:30px;height:30px;font-size:14px}
  .btn{width:100%}
  .footer-base{flex-direction:column;gap:4px}
}

/* =========================================================
   18. 减弱动态
   ========================================================= */
@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 [data-reveal]{
    opacity:1;
    transform:none;
  }
  .scroll-meter{transition:none}
  .status-dot{animation:none}
}