/* =========================================================
   乐宝体育 · /assets/site.css
   共享外壳：reset / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  text-size-adjust:100%;
  scroll-behavior:smooth;
}

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

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

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

button{background:none;border:0;padding:0;font:inherit;color:inherit;cursor:pointer;}

a{color:inherit;text-decoration:none;}

main{display:block;}

::selection{background:#FF5A2A;color:#150A06;}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0E1B2C;
  --ink-2:#132743;
  --ink-3:#0A1523;
  --orange:#FF5A2A;
  --orange-deep:#C93B14;
  --cyan:#3EF0C8;
  --cyan-deep:#1FA889;
  --cream:#F4EBD9;
  --cream-2:#EADFC8;
  --brown:#251C18;
  --mist:#A9B5C4;
  --gold:#FFC857;
  --paper:#FFFFFF;

  --line:rgba(169,181,196,.22);
  --line-strong:rgba(169,181,196,.42);

  --font-display:"Anton","Impact","Noto Sans SC","Arial Narrow",sans-serif;
  --font-body:"Inter","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --maxw:1440px;
  --radius:2px;
}

/* ---------- 3. 基础排版 ---------- */
body{
  background:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.06;
  letter-spacing:.03em;
  color:var(--paper);
}

h1{font-size:clamp(2.4rem,5vw,4rem);}
h2{font-size:clamp(1.75rem,3.2vw,2.5rem);}
h3{font-size:clamp(1.25rem,2vw,1.6rem);line-height:1.22;}
h4{font-size:clamp(1.05rem,1.4vw,1.2rem);line-height:1.3;}

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

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

.panel--cream :focus-visible,
.panel--cream a:focus-visible{outline-color:var(--orange-deep);}

/* ---------- 4. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:10px 18px;
  background:var(--cyan);
  color:#062018;
  font-weight:800;
  font-size:14px;
  letter-spacing:.06em;
  border-radius:var(--radius);
  transform:translateY(-180%);
  transition:transform .2s ease;
}

.skip-link:focus{
  transform:translateY(0);
  outline:2px solid var(--paper);
  outline-offset:2px;
}

/* ---------- 5. 布局工具 ---------- */
.container{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:clamp(16px,4vw,40px);
}

.container--narrow{max-width:920px;}

.section{
  position:relative;
  padding-block:clamp(40px,6vw,80px);
}

.section--tight{padding-block:clamp(24px,4vw,48px);}

.grid{display:grid;gap:clamp(16px,2.5vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--sidebar{grid-template-columns:minmax(0,1fr) minmax(240px,320px);}

/* ---------- 6. 按钮 ---------- */
.btn{
  position:relative;
  isolation:isolate;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  font-family:var(--font-body);
  font-size:14px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.06em;
  color:#180B06;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease;
}

.btn::before{
  content:"";
  position:absolute;
  inset:0;
  z-index:-1;
  background:var(--orange);
  border-radius:var(--radius);
  transform:skewX(-8deg);
  transition:background .2s ease,transform .2s ease,box-shadow .2s ease;
}

.btn:hover{color:#150A06;}
.btn:hover::before{background:var(--orange-deep);transform:skewX(-8deg) translateY(-2px);}
.btn:active::before{transform:skewX(-8deg) translateY(0);}

.btn--sm{padding:9px 16px;font-size:13px;}

.btn--ghost{color:var(--cream);}
.btn--ghost::before{
  background:transparent;
  border:1px solid rgba(244,235,217,.45);
  box-shadow:none;
}
.btn--ghost:hover{color:var(--cyan);}
.btn--ghost:hover::before{background:rgba(62,240,200,.08);border-color:var(--cyan);}

.btn--block{display:flex;width:100%;}

/* ---------- 7. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(14,27,44,.99),rgba(14,27,44,.94));
  border-bottom:1px solid var(--line);
  -webkit-backdrop-filter:blur(10px);
  backdrop-filter:blur(10px);
}

.scroll-progress{
  position:absolute;
  top:0;
  left:0;
  width:100%;
  height:3px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--orange),var(--gold) 55%,var(--cyan));
  pointer-events:none;
}

.header-rail{
  display:flex;
  align-items:center;
  gap:14px;
  padding:6px clamp(16px,4vw,40px);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
  white-space:nowrap;
  overflow-x:auto;
  scrollbar-width:none;
  border-bottom:1px dashed rgba(169,181,196,.18);
  background:
    repeating-linear-gradient(90deg,rgba(62,240,200,.07) 0 1px,transparent 1px 88px),
    rgba(19,39,67,.55);
}

.header-rail::-webkit-scrollbar{display:none;}

.rail-item{display:inline-flex;align-items:center;gap:8px;flex:0 0 auto;}
.rail-item--live{color:var(--cyan);}
.rail-sep{flex:0 0 auto;color:rgba(169,181,196,.45);}

.rail-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(62,240,200,.18);
}

.header-bar{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,26px);
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:11px clamp(16px,4vw,40px);
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:11px;
  flex:0 0 auto;
  color:var(--paper);
}

.brand-mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:5px 9px 5px;
  font-family:var(--font-display);
  font-size:17px;
  line-height:1;
  letter-spacing:.04em;
  color:#170B05;
  background:var(--orange);
  border-radius:1px;
  transform:skewX(-9deg);
  box-shadow:4px 4px 0 rgba(62,240,200,.32);
  transition:box-shadow .2s ease;
}

.brand-text{
  font-family:var(--font-display);
  font-size:20px;
  font-weight:700;
  letter-spacing:.09em;
  color:var(--paper);
  transition:color .2s ease;
}

.brand:hover .brand-mark{box-shadow:4px 4px 0 var(--cyan);}
.brand:hover .brand-text{color:var(--cyan);}

.site-nav{
  display:flex;
  flex:1 1 auto;
  align-items:center;
  justify-content:space-between;
  gap:clamp(10px,2vw,26px);
  min-width:0;
}

.nav-group{
  display:flex;
  align-items:center;
  gap:2px;
  min-width:0;
}

.nav-link{
  position:relative;
  display:inline-block;
  padding:9px 10px;
  font-size:14px;
  font-weight:600;
  letter-spacing:.05em;
  color:var(--mist);
  border-radius:var(--radius);
  transition:color .2s ease,background .2s ease;
}

.nav-link::after{
  content:"";
  position:absolute;
  left:10px;
  right:10px;
  bottom:4px;
  height:2px;
  background:var(--cyan);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .22s ease;
}

.nav-link:hover{color:var(--paper);}
.nav-link:hover::after{transform:scaleX(1);}

.nav-link[aria-current="page"]{color:var(--paper);font-weight:800;}
.nav-link[aria-current="page"]::after{background:var(--orange);transform:scaleX(1);}

.nav-group--brand .nav-link{color:var(--cream);}
.nav-group--data .nav-link{letter-spacing:.02em;}

.header-cta{flex:0 0 auto;}

.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  flex:0 0 auto;
  padding:9px 12px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  color:var(--cream);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.14em;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}

.nav-toggle:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(62,240,200,.08);}

.nav-toggle[aria-expanded="true"]{
  color:var(--orange);
  border-color:var(--orange);
  background:rgba(255,90,42,.1);
}

.toggle-bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:16px;
  height:14px;
}

.toggle-bars span{
  display:block;
  width:100%;
  height:2px;
  background:currentColor;
  transition:transform .24s ease,opacity .18s ease;
}

.nav-toggle[aria-expanded="true"] .toggle-bars span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .toggle-bars span:nth-child(2){opacity:0;}
.nav-toggle[aria-expanded="true"] .toggle-bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}

/* ---------- 8. 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,8vw,96px);
  background:var(--ink-3);
  border-top:1px solid var(--line-strong);
  color:var(--paper);
}

.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(62,240,200,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(62,240,200,.07) 1px,transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 72%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.95),transparent 72%);
}

.site-footer::after{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:4px;
  background:linear-gradient(90deg,var(--orange) 0 38%,var(--cyan) 38% 66%,var(--gold) 66% 100%);
}

.footer-inner{
  position:relative;
  max-width:var(--maxw);
  margin-inline:auto;
  padding:clamp(36px,5vw,64px) clamp(16px,4vw,40px) clamp(20px,3vw,30px);
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.9fr);
  gap:clamp(28px,4vw,56px);
  padding-bottom:clamp(24px,3vw,36px);
  border-bottom:1px solid var(--line);
}

.footer-brand{min-width:0;}

.footer-wordmark{
  display:inline-flex;
  align-items:center;
  gap:11px;
}

.footer-wordmark:hover .brand-text{color:var(--cyan);}
.footer-wordmark:hover .brand-mark{box-shadow:4px 4px 0 var(--cyan);}

.footer-tagline{
  margin-top:16px;
  max-width:34ch;
  font-size:14px;
  line-height:1.75;
  color:var(--mist);
}

.footer-quick{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-top:20px;
}

.quick-link{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:9px 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  font-size:13px;
  font-weight:700;
  letter-spacing:.05em;
  color:var(--cream);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}

.quick-link::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--cyan);
  transform:skewX(-10deg);
}

.quick-link:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(62,240,200,.08);}

.footer-grid{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,36px);
  min-width:0;
}

.footer-col{min-width:0;}

.footer-col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}

.footer-links li + li{margin-top:10px;}

.footer-links a{
  position:relative;
  display:inline-block;
  padding-left:14px;
  font-size:14px;
  color:var(--mist);
  transition:color .2s ease,padding-left .2s ease;
}

.footer-links a::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:6px;
  height:1px;
  background:var(--orange);
  transition:width .2s ease,background .2s ease;
}

.footer-links a:hover{color:var(--paper);padding-left:19px;}
.footer-links a:hover::before{width:13px;background:var(--cyan);}

.contact-list{display:grid;gap:12px;}

.contact-line{
  display:grid;
  grid-template-columns:auto minmax(0,1fr) auto;
  align-items:center;
  gap:10px;
}

.contact-line--block{grid-template-columns:auto minmax(0,1fr);align-items:start;}

.contact-label{
  padding:2px 8px;
  border:1px solid var(--line);
  border-radius:1px;
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--mist);
}

.contact-value{
  font-family:var(--font-mono);
  font-size:13px;
  line-height:1.6;
  color:var(--paper);
  word-break:break-all;
}

.contact-value--text{
  font-family:var(--font-body);
  font-size:13px;
  color:var(--mist);
}

.copy-btn{
  padding:4px 9px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--mist);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}

.copy-btn:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(62,240,200,.08);}
.copy-btn[data-copied="true"]{color:#062018;background:var(--cyan);border-color:var(--cyan);}

.footer-note{
  margin-top:14px;
  max-width:40ch;
  font-size:12px;
  line-height:1.75;
  color:rgba(169,181,196,.82);
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding-top:clamp(18px,2.5vw,26px);
}

.legal-links{display:flex;flex-wrap:wrap;gap:20px;}

.legal-links a{
  font-size:13px;
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}

.legal-links a:hover{color:var(--cyan);border-color:var(--cyan);}

.footer-icp{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(169,181,196,.86);
}

.copy-status{
  min-height:18px;
  margin-top:10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--cyan);
}

/* ---------- 9. 通用组件 ---------- */
.panel{
  position:relative;
  padding:clamp(20px,3vw,36px);
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--radius);
}

.panel--cream{
  background:var(--cream);
  border-color:rgba(37,28,24,.16);
  color:var(--brown);
}

.panel--cream h1,
.panel--cream h2,
.panel--cream h3,
.panel--cream h4{color:var(--brown);}

.panel--ghost{background:transparent;border-style:dashed;}

.panel--slant{
  -webkit-clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),calc(100% - 28px) 100%,0 100%);
}

.stack{display:grid;gap:clamp(18px,3vw,32px);}

.stack--overlap{display:grid;gap:0;}
.stack--overlap > * + *{margin-top:clamp(-40px,-3vw,-18px);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--cyan);
}

.eyebrow::before{content:"";width:22px;height:2px;background:var(--orange);}

.panel--cream .eyebrow{color:var(--orange-deep);}

.idx{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-width:30px;
  height:24px;
  padding:0 7px;
  background:var(--orange);
  color:#1A0E08;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  transform:skewX(-8deg);
}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 11px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.07em;
  color:var(--mist);
}

.tag--cyan{border-color:var(--cyan-deep);color:var(--cyan);}
.tag--gold{border-color:rgba(255,200,87,.55);color:var(--gold);}
.panel--cream .tag{border-color:rgba(37,28,24,.28);color:rgba(37,28,24,.78);}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding-block:16px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--mist);
}

.breadcrumb li{display:inline-flex;align-items:center;gap:8px;}

.breadcrumb li::after{content:"/";color:rgba(169,181,196,.45);}
.breadcrumb li:last-child::after{content:"";}

.breadcrumb a{
  color:var(--mist);
  border-bottom:1px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}

.breadcrumb a:hover{color:var(--cyan);border-color:var(--cyan);}

.breadcrumb [aria-current="page"]{color:var(--paper);}

.prose{max-width:70ch;}

.prose p{
  max-width:68ch;
  margin-bottom:1em;
  color:rgba(255,255,255,.86);
}

.prose p:last-child{margin-bottom:0;}

.panel--cream .prose p{color:rgba(37,28,24,.86);}

.prose a,
.link-inline{
  color:var(--cyan);
  text-decoration:underline;
  text-decoration-thickness:1px;
  text-underline-offset:4px;
}

.prose a:hover,
.link-inline:hover{color:var(--paper);}

.panel--cream .prose a,
.panel--cream .link-inline{color:var(--orange-deep);}
.panel--cream .prose a:hover,
.panel--cream .link-inline:hover{color:var(--brown);}

/* 图片容器基础规则（页面阶段放置图片） */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:
    radial-gradient(120% 120% at 18% 0%,rgba(255,90,42,.34),transparent 62%),
    linear-gradient(150deg,var(--ink-2),var(--ink-3));
}

.media-frame img,
.media-frame svg,
.media-frame video{
  width:100%;
  height:100%;
  object-fit:cover;
}

.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.55;
  background-image:
    linear-gradient(rgba(62,240,200,.1) 1px,transparent 1px),
    linear-gradient(90deg,rgba(62,240,200,.1) 1px,transparent 1px);
  background-size:48px 48px;
  mix-blend-mode:screen;
}

.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--banner{aspect-ratio:21 / 9;}

.media-frame--slant{
  -webkit-clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 32px));
  clip-path:polygon(0 0,100% 0,100% 100%,0 calc(100% - 32px));
}

/* 主题筛选 */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:12px 0;
}

.filter-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:8px 14px;
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.1em;
  color:var(--mist);
  transition:color .18s ease,border-color .18s ease,background .18s ease,transform .18s ease;
}

.filter-btn:hover{color:var(--paper);border-color:var(--cream);}
.filter-btn:active{transform:translateY(1px);}

.filter-btn[aria-pressed="true"]{
  color:var(--cyan);
  border-color:var(--cyan);
  background:rgba(62,240,200,.1);
  box-shadow:0 0 0 2px rgba(62,240,200,.16);
}

.filter-btn[aria-pressed="true"]::before{
  content:"";
  width:6px;
  height:6px;
  background:var(--orange);
  transform:skewX(-10deg);
}

.filter-status{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--mist);
}

.panel--cream .filter-btn{color:rgba(37,28,24,.72);border-color:rgba(37,28,24,.3);}
.panel--cream .filter-btn:hover{color:var(--brown);border-color:var(--brown);}
.panel--cream .filter-btn[aria-pressed="true"]{
  color:var(--cyan-deep);
  border-color:var(--cyan-deep);
  background:rgba(31,168,137,.12);
  box-shadow:0 0 0 2px rgba(31,168,137,.16);
}
.panel--cream .filter-status{color:rgba(37,28,24,.66);}

[data-filter-item].is-hidden{display:none;}

/* 入场显现 */
.reveal{
  opacity:0;
  transform:translateY(18px);
  transition:opacity .55s ease,transform .55s ease;
}

.reveal.is-visible{opacity:1;transform:none;}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1024px){
  .nav-link{padding:8px 7px;font-size:13px;}
  .header-cta{padding:9px 14px;font-size:13px;}
  .footer-top{grid-template-columns:minmax(0,1fr);}
}

@media (max-width:900px){
  .nav-toggle{display:inline-flex;}

  .header-bar{flex-wrap:wrap;row-gap:10px;}

  .brand{order:1;}
  .header-cta{order:2;margin-left:auto;}
  .nav-toggle{order:3;}
  .site-nav{order:4;}

  .site-nav{
    display:none;
    flex:1 1 100%;
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    margin-top:8px;
    padding-top:8px;
    border-top:1px solid var(--line);
  }

  .site-header[data-open] .site-nav{display:flex;}

  .nav-group{flex-direction:column;align-items:stretch;gap:0;width:100%;}

  .nav-group--data{
    margin-top:10px;
    padding-top:10px;
    border-top:1px dashed var(--line);
  }

  .nav-link{
    display:block;
    padding:12px 8px;
    font-size:15px;
    border-bottom:1px solid rgba(169,181,196,.1);
  }

  .nav-link::after{display:none;}

  .nav-link[aria-current="page"]{
    color:var(--cyan);
    background:rgba(62,240,200,.08);
  }

  .nav-link[aria-current="page"]::before{
    content:"";
    display:inline-block;
    width:6px;
    height:6px;
    margin-right:10px;
    vertical-align:middle;
    background:var(--orange);
    transform:skewX(-10deg);
  }

  .site-header[data-open] .header-bar{border-bottom:0;}

  .grid--2,
  .grid--3,
  .grid--sidebar{grid-template-columns:1fr;}

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

  .stack--overlap > * + *{margin-top:0;}
  .stack--overlap{row-gap:clamp(16px,3vw,24px);}

  .filter-status{margin-left:0;flex:1 1 100%;}
}

@media (max-width:600px){
  .brand-text{font-size:17px;}
  .brand-mark{font-size:15px;padding:4px 7px;}
  .header-cta{padding:8px 12px;font-size:12px;letter-spacing:.04em;}
  .nav-toggle{padding:8px 10px;font-size:11px;letter-spacing:.1em;}
  .header-rail{font-size:10px;letter-spacing:.12em;gap:10px;}

  .footer-grid{grid-template-columns:1fr;}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:10px;}
  .contact-line{grid-template-columns:auto minmax(0,1fr);}
  .contact-line .copy-btn{grid-column:2;justify-self:start;}
}

/* ---------- 11. 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;
  }

  .reveal{opacity:1;transform:none;}
  .site-header{-webkit-backdrop-filter:none;backdrop-filter:none;}
  .btn:hover::before{transform:skewX(-8deg);}
}