/* ==========================================================================
   米兰体育 · 共享样式 /assets/site.css
   骨架：夜间球场深黑 / 米兰红脊线 / 电光蓝绿数据点 / 橙黄交互态
   ========================================================================== */

:root{
  --red:#C8102E;
  --red-deep:#7A0A1D;
  --red-bright:#E01B3C;
  --ink:#080A0F;
  --ink-2:#101319;
  --graphite:#1B1F27;
  --graphite-2:#232833;
  --mint:#00E5C7;
  --amber:#FFB000;
  --mist:#F5F7FA;
  --grey:#8A94A6;
  --smoke:#C7D2D9;
  --line:rgba(199,210,217,.16);
  --line-strong:rgba(199,210,217,.32);
  --radius-lg:28px;
  --radius-md:18px;
  --radius-sm:12px;
  --pill:999px;
  --wrap:1180px;
  --skew:-8deg;
  --font-display:"Barlow Condensed","DIN Condensed","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Consolas,monospace;
  --ease:cubic-bezier(.22,.8,.28,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote{margin:0}
ul[class],ol[class]{list-style:none;padding:0}
img,svg,picture{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
table{border-collapse:collapse;width:100%}

/* ---------- base typography ---------- */
body{
  background-color:var(--ink);
  color:var(--mist);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
@media (min-width:760px){body{font-size:17px}}
h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.012em;
  text-wrap:balance;
}
h1{font-size:clamp(2.2rem,5.2vw,4rem)}
h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
h3{font-size:clamp(1.18rem,2vw,1.55rem)}
h4{font-size:clamp(1rem,1.5vw,1.15rem);letter-spacing:.02em}
p{text-wrap:pretty}
strong{color:var(--mist);font-weight:700}
::selection{background:var(--red);color:var(--mist)}

:focus-visible{
  outline:2px solid var(--mint);
  outline-offset:3px;
  border-radius:6px;
}
#main-content{scroll-margin-top:150px}

.mono{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:-.01em;
}
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,32px);
}

/* ---------- skip link ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:300;
  padding:12px 20px;
  border-radius:var(--pill);
  background:var(--mist);
  color:var(--ink);
  font-weight:700;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .2s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);color:var(--ink)}

/* ---------- header ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  color:var(--mist);
  background:
    radial-gradient(90% 170% at 6% -45%,rgba(200,16,46,.45),transparent 58%),
    radial-gradient(70% 150% at 94% -55%,rgba(0,229,199,.18),transparent 62%),
    linear-gradient(180deg,#0B0E14 0%,var(--ink) 82%);
  border-bottom:1px solid var(--line);
}

/* 顶部状态条 */
.header-rail{
  max-height:46px;
  overflow:hidden;
  background:rgba(0,0,0,.42);
  border-bottom:1px solid rgba(199,210,217,.1);
  transition:max-height .35s var(--ease),opacity .25s var(--ease);
}
.site-header[data-scrolled="true"] .header-rail{
  max-height:0;
  opacity:0;
}
.rail-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:42px;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--grey);
}
.rail-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--smoke);
  letter-spacing:.08em;
}
.rail-links{
  display:flex;
  align-items:center;
  gap:20px;
  font-size:12px;
}
.rail-links a{
  color:var(--grey);
  text-decoration:none;
  border-bottom:1px solid transparent;
  padding-bottom:2px;
  transition:color .2s,border-color .2s;
}
.rail-links a:hover{color:var(--mint);border-color:rgba(0,229,199,.6)}
.rail-clock{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-size:12px;
}
.rail-label{color:var(--grey);letter-spacing:.16em}
.rail-clock .mono{color:var(--mint);font-weight:700;font-size:12.5px}

/* 脉冲点 */
.pulse-dot{
  display:inline-block;
  width:8px;
  height:8px;
  flex:0 0 auto;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 0 rgba(0,229,199,.55);
  animation:pulse-ring 2.4s var(--ease) infinite;
}
@keyframes pulse-ring{
  0%{box-shadow:0 0 0 0 rgba(0,229,199,.55)}
  70%{box-shadow:0 0 0 9px rgba(0,229,199,0)}
  100%{box-shadow:0 0 0 0 rgba(0,229,199,0)}
}

/* 居中刊头 */
.masthead-inner{
  display:grid;
  grid-template-columns:minmax(0,1fr) auto minmax(0,1fr);
  align-items:center;
  gap:16px;
  padding-block:15px;
}
.masthead-meta{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  font-size:11px;
  letter-spacing:.16em;
  color:var(--grey);
}
.masthead-meta .mono{color:var(--smoke);font-size:12px;font-weight:700}
.masthead-meta--end{justify-self:end;text-align:right}
.meta-k{color:var(--grey)}

.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  justify-self:center;
  text-decoration:none;
  color:var(--mist);
}
.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:46px;
  height:46px;
  flex:0 0 auto;
  border-radius:12px;
  background:linear-gradient(150deg,var(--red) 0%,var(--red-deep) 100%);
  box-shadow:0 8px 22px rgba(200,16,46,.38),inset 0 0 0 1px rgba(255,255,255,.14);
  transform:skewX(var(--skew));
}
.brand-mark span{
  display:block;
  font-family:var(--font-display);
  font-size:26px;
  font-weight:800;
  line-height:1;
  color:var(--mist);
  transform:skewX(calc(var(--skew) * -1));
}
.brand-text{display:grid;gap:2px;line-height:1}
.brand-name{
  font-family:var(--font-display);
  font-size:clamp(24px,3vw,32px);
  font-weight:800;
  letter-spacing:.03em;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.24em;
  color:var(--grey);
  white-space:nowrap;
}

/* 移动按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  justify-self:end;
  padding:9px 15px 9px 13px;
  border:1px solid var(--line-strong);
  border-radius:var(--pill);
  background:rgba(27,31,39,.92);
  color:var(--mist);
  font-size:13px;
  letter-spacing:.08em;
  transition:border-color .2s,background .2s,color .2s;
}
.nav-toggle:hover{border-color:var(--mint)}
.nav-toggle-bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:18px;
  height:12px;
}
.nav-toggle-bars span{
  display:block;
  height:2px;
  border-radius:2px;
  background:var(--mint);
  transition:transform .25s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--amber);color:var(--amber)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg);background:var(--amber)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg);background:var(--amber)}
.nav-toggle-text{font-weight:600}

/* 居中栏目导航 */
.primary-nav{
  position:relative;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,19,25,.72),rgba(8,10,15,.18));
}
.nav-list{
  display:flex;
  flex-wrap:wrap;
  justify-content:center;
  align-items:center;
  gap:4px;
  padding:10px 0;
}
.nav-item{display:block}
.nav-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 16px;
  border-radius:var(--pill);
  font-size:14.5px;
  font-weight:500;
  color:var(--smoke);
  text-decoration:none;
  transition:background .2s,color .2s,box-shadow .2s;
}
.nav-link:hover{background:rgba(199,210,217,.08);color:var(--mist)}
.nav-index{
  font-size:10.5px;
  font-weight:700;
  letter-spacing:.06em;
  color:var(--red);
  transition:color .2s;
}
.nav-link:hover .nav-index{color:var(--mint)}
.nav-link[aria-current="page"]{
  background:linear-gradient(135deg,var(--red) 0%,var(--red-deep) 100%);
  color:var(--mist);
  font-weight:700;
  box-shadow:0 8px 20px rgba(200,16,46,.34),inset 0 0 0 1px rgba(255,255,255,.14);
}
.nav-link[aria-current="page"] .nav-index{color:var(--amber)}

/* 比分脊线进度 */
.spine-progress{
  position:relative;
  height:3px;
  overflow:hidden;
  background:rgba(199,210,217,.08);
}
.spine-progress-bar{
  display:block;
  height:100%;
  width:100%;
  transform:scaleX(var(--p,0));
  transform-origin:left center;
  background:linear-gradient(90deg,var(--red) 0%,var(--amber) 55%,var(--mint) 100%);
  box-shadow:0 0 12px rgba(0,229,199,.5);
}

/* ---------- footer ---------- */
.site-footer{
  position:relative;
  background:
    radial-gradient(80% 140% at 8% 0%,rgba(200,16,46,.22),transparent 60%),
    radial-gradient(70% 130% at 92% 8%,rgba(0,229,199,.1),transparent 62%),
    var(--ink);
  color:var(--smoke);
  border-top:1px solid var(--line);
}
.footer-spine{
  height:4px;
  background:linear-gradient(90deg,var(--red) 0%,var(--red-deep) 28%,var(--amber) 62%,var(--mint) 100%);
}
.footer-top{
  display:grid;
  grid-template-columns:1.05fr 1.6fr;
  gap:clamp(28px,5vw,64px);
  padding-block:clamp(36px,6vw,64px);
}
.footer-brand{display:grid;align-content:start;gap:0}
.footer-wordmark{
  display:inline-flex;
  align-items:center;
  font-family:var(--font-display);
  font-size:clamp(24px,3.4vw,34px);
  font-weight:800;
  letter-spacing:.02em;
  color:var(--mist);
  text-decoration:none;
}
.footer-wordmark::before{
  content:"";
  display:inline-block;
  width:14px;
  height:16px;
  margin-right:10px;
  border-radius:3px;
  background:linear-gradient(150deg,var(--red),var(--red-deep));
  transform:skewX(var(--skew));
}
.footer-wordmark:hover{color:var(--mint)}
.footer-tagline{
  margin-top:14px;
  max-width:26ch;
  font-size:14px;
  color:var(--smoke);
}
.footer-status{
  display:inline-flex;
  align-items:center;
  gap:8px;
  margin-top:18px;
  padding:6px 14px;
  border:1px solid var(--line);
  border-radius:var(--pill);
  background:rgba(0,0,0,.34);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--grey);
}
.footer-cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(18px,3vw,32px);
}
.footer-col{min-width:0}
.footer-col-title{
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom:14px;
  padding-bottom:10px;
  border-bottom:1px solid var(--line);
  font-family:var(--font-display);
  font-size:13px;
  font-weight:700;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--grey);
}
.footer-col-title::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(0,229,199,.16);
}
.footer-list{
  display:grid;
  gap:10px;
  font-size:14px;
}
.footer-link{
  color:var(--smoke);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s,border-color .2s;
}
.footer-link:hover{color:var(--mint);border-color:rgba(0,229,199,.55)}
.footer-contact{gap:12px;font-size:13.5px;line-height:1.6}
.contact-line{
  display:grid;
  grid-template-columns:40px minmax(0,1fr);
  gap:8px;
  align-items:start;
  overflow-wrap:anywhere;
}
.contact-k{
  font-size:11.5px;
  letter-spacing:.14em;
  color:var(--grey);
  padding-top:2px;
}
.footer-note{
  margin-top:14px;
  font-size:12px;
  line-height:1.6;
  color:var(--grey);
}
.footer-legal{
  border-top:1px solid var(--line);
  background:rgba(0,0,0,.4);
  padding-block:16px;
}
.footer-legal-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  font-size:12.5px;
  color:var(--grey);
}
.footer-fine{letter-spacing:.04em}
.footer-fine .mono{color:var(--smoke)}
.footer-legal-links{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:16px;
  font-size:12.5px;
}
.footer-legal-links .footer-link{color:var(--grey)}
.footer-legal-links .footer-link:hover{color:var(--mint)}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:90;
  padding:11px 18px;
  border-radius:var(--pill);
  border:1px solid rgba(255,255,255,.18);
  background:linear-gradient(135deg,var(--red),var(--red-deep));
  color:var(--mist);
  font-family:var(--font-display);
  font-size:14px;
  font-weight:700;
  letter-spacing:.08em;
  box-shadow:0 12px 28px rgba(8,10,15,.6);
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s,background .2s;
}
.to-top[data-visible="true"]{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:linear-gradient(135deg,var(--red-bright),var(--red))}

/* ---------- 通用按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:13px 24px;
  border-radius:var(--pill);
  border:1px solid transparent;
  font-family:var(--font-display);
  font-size:16px;
  font-weight:700;
  letter-spacing:.05em;
  text-decoration:none;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .2s,background .2s,color .2s,border-color .2s;
}
.btn:active{transform:translateY(1px) scale(.99)}
.btn--primary{
  background:linear-gradient(135deg,var(--red),var(--red-deep));
  color:var(--mist);
  box-shadow:0 12px 26px rgba(200,16,46,.34),inset 0 0 0 1px rgba(255,255,255,.1);
}
.btn--primary:hover{background:linear-gradient(135deg,var(--red-bright),var(--red));box-shadow:0 16px 32px rgba(200,16,46,.44)}
.btn--ghost{
  background:rgba(199,210,217,.05);
  border-color:var(--line-strong);
  color:var(--mist);
}
.btn--ghost:hover{border-color:var(--mint);color:var(--mint);background:rgba(0,229,199,.08)}
.btn--amber{
  background:linear-gradient(135deg,var(--amber),#E08E00);
  color:#231500;
  box-shadow:0 12px 24px rgba(255,176,0,.26);
}
.btn--amber:hover{background:linear-gradient(135deg,#FFC23D,var(--amber))}

/* ---------- 胶囊筛选 / 标签 / 状态点 ---------- */
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 16px;
  border-radius:var(--pill);
  border:1px solid var(--line-strong);
  background:rgba(27,31,39,.85);
  color:var(--smoke);
  font-size:13.5px;
  text-decoration:none;
  cursor:pointer;
  transition:border-color .2s,color .2s,background .2s;
}
.chip:hover{border-color:var(--mint);color:var(--mist)}
.chip.is-active,
.chip[aria-pressed="true"]{
  background:rgba(255,176,0,.16);
  border-color:var(--amber);
  color:var(--amber);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border-radius:var(--pill);
  border:1px solid rgba(0,229,199,.35);
  background:rgba(0,229,199,.12);
  color:var(--mint);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.1em;
}
.tag--amber{border-color:rgba(255,176,0,.4);background:rgba(255,176,0,.14);color:var(--amber)}
.tag--red{border-color:rgba(200,16,46,.5);background:rgba(200,16,46,.18);color:#FF8FA3}
.status-dot{
  display:inline-block;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(0,229,199,.18);
}
.status-dot--amber{background:var(--amber);box-shadow:0 0 0 3px rgba(255,176,0,.2)}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-size:12.5px;
  letter-spacing:.04em;
  color:var(--grey);
}
.breadcrumb ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  list-style:none;
  margin:0;
  padding:0;
}
.breadcrumb li{display:inline-flex;align-items:center;gap:8px}
.breadcrumb li + li::before{content:"/";color:rgba(199,210,217,.35)}
.breadcrumb a{
  color:var(--smoke);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .2s,border-color .2s;
}
.breadcrumb a:hover{color:var(--mint);border-color:rgba(0,229,199,.5)}
.breadcrumb [aria-current="page"]{color:var(--mist);font-weight:600}

/* ---------- 章节节奏 ---------- */
.section{padding-block:clamp(44px,7vw,88px)}
.section-head{
  display:grid;
  gap:12px;
  max-width:64ch;
  margin-bottom:clamp(22px,3vw,36px);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--mint);
}
.lead{
  max-width:68ch;
  font-size:clamp(1rem,1.4vw,1.125rem);
  color:var(--smoke);
}
.chapter{display:grid;gap:6px}
.chapter-no{
  display:block;
  font-family:var(--font-mono);
  font-weight:800;
  font-size:clamp(2rem,4.6vw,3.4rem);
  line-height:.85;
  letter-spacing:-.05em;
  color:var(--red);
}
.divider{
  height:1px;
  border:0;
  margin-block:clamp(26px,4vw,46px);
  background:linear-gradient(90deg,transparent,var(--line-strong),transparent);
}

/* ---------- 面板 ---------- */
.panel{
  background:linear-gradient(160deg,rgba(27,31,39,.96),rgba(16,19,25,.96));
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(18px,3vw,28px);
}
.panel-head{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding-bottom:14px;
  margin-bottom:16px;
  border-bottom:1px solid var(--line);
}
.panel-title{
  font-family:var(--font-display);
  font-size:clamp(1rem,1.6vw,1.2rem);
  font-weight:800;
  letter-spacing:.05em;
  color:var(--mist);
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);align-items:start}

/* ---------- 列表 ---------- */
.list-plain{
  list-style:none;
  margin:0;
  padding:0;
  display:grid;
  gap:10px;
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:linear-gradient(150deg,#151922,#0B0E14);
  isolation:isolate;
}
.media-frame[data-ratio="21x9"]{aspect-ratio:21 / 9}
.media-frame[data-ratio="16x9"]{aspect-ratio:16 / 9}
.media-frame[data-ratio="4x3"]{aspect-ratio:4 / 3}
.media-frame[data-ratio="1x1"]{aspect-ratio:1 / 1}
.media-frame[data-ratio="3x4"]{aspect-ratio:3 / 4}
.media-frame > img,
.media-frame > picture > img{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  z-index:1;
  pointer-events:none;
  background:linear-gradient(180deg,transparent 45%,rgba(8,10,15,.78) 100%);
}
.media-frame--plain::after{display:none}
.media-frame--slant{clip-path:polygon(0 0,100% 0,100% 88%,0 100%)}
.media-caption{
  position:absolute;
  left:16px;
  right:16px;
  bottom:14px;
  z-index:2;
  font-size:12px;
  letter-spacing:.04em;
  color:var(--smoke);
}

/* ---------- 比分脊线装饰 ---------- */
.score-spine{
  position:relative;
  width:3px;
  border-radius:3px;
  background:linear-gradient(180deg,var(--red) 0%,var(--amber) 48%,var(--mint) 100%);
  box-shadow:0 0 18px rgba(0,229,199,.22);
}
.score-spine::before{
  content:"";
  position:absolute;
  left:50%;
  top:-7px;
  width:11px;
  height:11px;
  border-radius:2px;
  background:var(--red);
  transform:translateX(-50%) rotate(45deg);
}

/* ---------- 显现动效 ---------- */
html[data-js] [data-reveal]{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .6s var(--ease),transform .6s var(--ease);
  transition-delay:calc(var(--i,0) * 70ms);
}
html[data-js] [data-reveal].is-revealed{
  opacity:1;
  transform:none;
}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .grid--split{grid-template-columns:1fr}
  .footer-top{grid-template-columns:1fr}
}

@media (max-width:860px){
  .rail-links{display:none}
  .rail-inner{min-height:38px;font-size:11px}
  .masthead-inner{
    grid-template-columns:minmax(0,1fr) auto;
    gap:10px;
    padding-block:12px;
  }
  .masthead-meta{display:none}
  .brand{justify-self:start}
  .brand-mark{width:40px;height:40px;border-radius:10px}
  .brand-mark span{font-size:22px}
  .brand-sub{font-size:9px;letter-spacing:.18em}
  .nav-toggle{display:inline-flex}

  .primary-nav{max-height:none;border-top:1px solid var(--line)}
  html[data-js] .primary-nav{
    max-height:0;
    overflow:hidden;
    visibility:hidden;
    pointer-events:none;
    border-top:0;
    transition:max-height .4s var(--ease),visibility .4s var(--ease);
  }
  html[data-js] .primary-nav[data-open="true"]{
    max-height:min(74vh,560px);
    overflow-y:auto;
    visibility:visible;
    pointer-events:auto;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(27,31,39,.98),rgba(8,10,15,.98));
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:12px 0 18px;
  }
  .nav-link{
    justify-content:flex-start;
    padding:14px 16px;
    border-radius:14px;
    font-size:16px;
  }
  .nav-index{font-size:11.5px}

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

@media (max-width:560px){
  .footer-cols{grid-template-columns:1fr}
  .footer-legal-inner{flex-direction:column;align-items:flex-start}
  .to-top{font-size:13px;padding:10px 15px}
  #main-content{scroll-margin-top:110px}
}

@media (min-width:1500px){
  :root{--wrap:1260px}
}

/* ---------- 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;
    scroll-behavior:auto !important;
  }
  html[data-js] [data-reveal]{
    opacity:1;
    transform:none;
  }
  .pulse-dot{animation:none;box-shadow:0 0 0 3px rgba(0,229,199,.2)}
  .spine-progress-bar{transition:none}
}