/* ============================================================
   悟空体育主站 · 共享样式 /assets/site.css
   重置 / 变量 / 中文排版 / 头部 / 页脚 / 基础组件
   ============================================================ */

/* 1 ── 重置 ───────────────────────────────────────────── */
*,*::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,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

/* 2 ── 设计变量 ───────────────────────────────────────── */
:root{
  --space-black:#0B0E13;
  --ink-layer:#151A22;
  --ink-soft:#1D242F;
  --gold:#E8B23A;
  --gold-glow:#F7D97A;
  --gold-deep:#8A6410;
  --green:#2FBF71;
  --blue:#3E7BFA;
  --orange:#F2703A;
  --paper:#F4EFE5;
  --paper-card:#FFFDF7;
  --text-dark:#F5F7FA;
  --text-light:#1B1F27;
  --line:#2A313C;
  --muted:#8C96A6;
  --wrap:1220px;
  --gutter:clamp(18px,4.2vw,42px);
  --header-offset:150px;
  --r-lg:20px;
  --r-md:14px;
  --r-sm:10px;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-editorial:"Songti SC","Source Han Serif SC","Noto Serif SC",Georgia,"Times New Roman",serif;
  --font-body:var(--font-display);
  --font-data:"Roboto Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;
  --shadow-panel:0 26px 60px rgba(0,0,0,.5);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* 3 ── 基础与中文排版 ─────────────────────────────────── */
body{
  background:var(--space-black);
  color:var(--text-dark);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
@media (min-width:1024px){body{font-size:18px}}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:900;line-height:1.2;letter-spacing:0;color:inherit}
h1{font-size:clamp(32px,5.6vw,64px);line-height:1.12}
h2{font-size:clamp(26px,3.6vw,44px);line-height:1.16}
h3{font-size:clamp(19px,2.2vw,26px)}
h4{font-size:clamp(17px,1.6vw,20px)}
p{max-width:72ch}
a{color:var(--blue);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--gold-glow)}
strong{font-weight:700;color:var(--gold-glow)}
::selection{background:rgba(232,178,58,.85);color:#1B1204}
#main-content{display:block;scroll-margin-top:var(--header-offset)}
hr{border:0;border-top:1px solid var(--line);margin:clamp(28px,4vw,52px) 0}

/* 4 ── 可访问性 ───────────────────────────────────────── */
:focus-visible{outline:2px solid var(--gold-glow);outline-offset:3px;border-radius:6px}
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;top:0;left:-9999px;z-index:200;
  padding:12px 20px;background:var(--gold);color:#1B1204;
  font-weight:700;border-radius:0 0 var(--r-sm) 0;
}
.skip-link:focus{left:0;color:#1B1204}

/* 5 ── 布局骨架 ───────────────────────────────────────── */
.container{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.section{position:relative;background:var(--space-black);color:var(--text-dark);padding:clamp(52px,7.5vw,108px) 0}
.section--ink{background:var(--ink-layer)}
.section--paper{background:var(--paper);color:var(--text-light)}
.section--tight{padding:clamp(32px,4.5vw,60px) 0}
.section--paper h1,.section--paper h2,.section--paper h3,.section--paper h4{color:var(--text-light)}
.section--paper .eyebrow{color:var(--gold-deep)}
.section--paper .lede{color:rgba(27,31,39,.76)}
.section--paper .data-num{color:var(--gold-deep)}
.section--paper .panel__label{color:rgba(27,31,39,.55)}
.section--paper .tag{background:rgba(27,31,39,.06);border-color:rgba(27,31,39,.14);color:#3B424F}
.section--paper .breadcrumbs__link{color:rgba(27,31,39,.62)}
.section--paper .breadcrumbs__current{color:var(--gold-deep)}
.section--paper .breadcrumbs__item::after{color:rgba(27,31,39,.25)}
.section--paper .toc__list{border-left-color:rgba(27,31,39,.18)}
.section--paper .toc__link{color:rgba(27,31,39,.62)}
.section--paper .toc__link:hover{color:var(--gold-deep)}
.section--paper .toc__link[aria-current="true"]{color:var(--gold-deep);border-left-color:var(--gold-deep)}
.section--paper .prose{color:rgba(27,31,39,.86)}
.section--paper .prose a{color:#1B4FD1}
.section--paper .prose blockquote{color:rgba(27,31,39,.78)}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.layout{display:grid;gap:clamp(22px,3vw,40px);grid-template-columns:minmax(0,1fr);align-items:start}
.layout__main{min-width:0}
@media (min-width:640px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (min-width:900px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:1000px){
  .layout{grid-template-columns:minmax(0,8fr) minmax(250px,4fr)}
  .layout__side{position:sticky;top:calc(var(--header-offset) + 12px)}
}
@media (min-width:1200px){
  .grid--4{grid-template-columns:repeat(4,minmax(0,1fr))}
}

/* 6 ── 文本构件 ───────────────────────────────────────── */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-data);font-size:12.5px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold);margin-bottom:14px;
}
.eyebrow::before{content:"";width:26px;height:2px;background:currentColor;flex:0 0 auto}
.lede{font-size:clamp(16px,1.5vw,19px);line-height:1.85;color:rgba(245,247,250,.74)}
.section-head{max-width:70ch;margin-bottom:clamp(24px,3.2vw,44px)}
.section-title{margin:0 0 .45em}
.section-title--editorial{font-family:var(--font-editorial);font-weight:700;letter-spacing:.01em}
.divider{height:1px;background:linear-gradient(90deg,transparent,var(--line),transparent);margin:clamp(26px,3.6vw,48px) 0}
.prose{max-width:72ch;font-size:17px;line-height:1.85}
@media (min-width:1024px){.prose{font-size:18px}}
.prose--editorial{font-family:var(--font-editorial)}
.prose p{margin-bottom:1.15em}
.prose h2{margin:1.8em 0 .6em;font-size:clamp(24px,3vw,34px)}
.prose h3{margin:1.5em 0 .5em;font-size:clamp(19px,2.2vw,24px)}
.prose ul,.prose ol{list-style:disc;padding-left:1.3em;margin-bottom:1.2em}
.prose ol{list-style:decimal}
.prose li{margin-bottom:.5em}
.prose a{color:var(--blue);text-decoration:underline;text-underline-offset:3px}
.prose blockquote{
  margin:1.6em 0;padding:6px 0 6px 20px;border-left:3px solid var(--gold);
  font-family:var(--font-editorial);font-size:1.05em;color:rgba(245,247,250,.8);
}

/* 7 ── 按钮 / 标签 / 数据 ─────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-family:var(--font-display);font-weight:700;font-size:15px;line-height:1;
  letter-spacing:.02em;padding:15px 26px;border-radius:999px;border:1px solid transparent;
  text-decoration:none;cursor:pointer;
  transition:transform .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn--gold{background:linear-gradient(180deg,var(--gold-glow),var(--gold));color:#1B1204;box-shadow:0 12px 30px rgba(232,178,58,.26)}
.btn--gold:hover{color:#1B1204;box-shadow:0 16px 38px rgba(232,178,58,.4)}
.btn--ghost{background:transparent;color:var(--text-dark);border-color:var(--line)}
.btn--ghost:hover{color:var(--gold-glow);border-color:var(--gold)}
.btn--blue{background:var(--blue);color:#fff}
.btn--blue:hover{color:#fff;box-shadow:0 14px 32px rgba(62,123,250,.35)}
.btn--sm{padding:11px 18px;font-size:14px}
.btn--block{width:100%}

.tag{
  display:inline-flex;align-items:center;gap:6px;font-family:var(--font-data);
  font-size:12.5px;letter-spacing:.08em;padding:5px 12px;border-radius:999px;
  background:rgba(245,247,250,.07);color:rgba(245,247,250,.8);
  border:1px solid rgba(245,247,250,.14);
}
.tag--gold{background:rgba(232,178,58,.14);color:var(--gold-glow);border-color:rgba(232,178,58,.42)}
.tag--green{background:rgba(47,191,113,.14);color:#7DE0A8;border-color:rgba(47,191,113,.38)}
.tag--blue{background:rgba(62,123,250,.16);color:#9EBCFF;border-color:rgba(62,123,250,.42)}
.tag--orange{background:rgba(242,112,58,.16);color:#FFA67C;border-color:rgba(242,112,58,.44)}

.data-num{
  display:block;font-family:var(--font-data);font-weight:700;
  font-size:clamp(34px,4.4vw,58px);line-height:1;letter-spacing:-.02em;
  color:var(--gold);font-variant-numeric:tabular-nums;
}
.data-num--green{color:var(--green)}
.data-num--blue{color:var(--blue)}

/* 8 ── 面板与图片容器 ─────────────────────────────────── */
.panel{
  position:relative;background:var(--ink-layer);border:1px solid var(--line);
  border-radius:var(--r-lg);padding:clamp(20px,3vw,32px);
}
.panel--glass{
  background:rgba(21,26,34,.55);
  backdrop-filter:blur(16px) saturate(140%);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  border-color:rgba(245,247,250,.12);
}
.panel--paper{background:var(--paper-card);color:var(--text-light);border-color:rgba(27,31,39,.08)}
.panel--edge{border-left:3px solid var(--gold)}
.panel--alert{border-color:rgba(242,112,58,.5);box-shadow:0 0 0 1px rgba(242,112,58,.18),0 22px 50px rgba(242,112,58,.14)}
.panel--overlap{margin-top:clamp(-56px,-5vw,-22px);box-shadow:var(--shadow-panel)}
.panel__label{font-family:var(--font-data);font-size:12px;letter-spacing:.16em;color:var(--muted);margin:0 0 10px}

.media-frame{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);
  background:linear-gradient(140deg,#1B2230 0%,#10141C 58%,#1C1508 100%);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:repeating-linear-gradient(115deg,rgba(232,178,58,.06) 0 2px,transparent 2px 12px);
}
.media-frame__img,.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--hero{aspect-ratio:16/9}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:4/5}
.media-frame--portrait{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__caption{
  position:absolute;left:0;right:0;bottom:0;padding:14px 18px;font-size:13px;
  color:rgba(245,247,250,.85);
  background:linear-gradient(180deg,transparent,rgba(6,8,12,.92));
}

/* 9 ── 面包屑 ─────────────────────────────────────────── */
.breadcrumbs{padding-top:14px}
.breadcrumbs__list{display:flex;flex-wrap:wrap;gap:8px;font-family:var(--font-data);font-size:13px;letter-spacing:.06em;color:var(--muted)}
.breadcrumbs__item{display:flex;align-items:center;gap:8px}
.breadcrumbs__item::after{content:"/";color:rgba(245,247,250,.25)}
.breadcrumbs__item:last-child::after{content:""}
.breadcrumbs__link{color:rgba(245,247,250,.7)}
.breadcrumbs__link:hover{color:var(--gold-glow)}
.breadcrumbs__current{color:var(--gold)}

/* 10 ── 头部（双层导航） ─────────────────────────────── */
.site-header{position:sticky;top:0;z-index:60;background:var(--space-black)}
html.nav-open{overflow:hidden}

.scroll-rail{position:fixed;top:0;left:0;right:0;height:3px;background:rgba(245,247,250,.07);z-index:70;pointer-events:none}
.scroll-rail__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gold),var(--orange));transition:width .12s linear}

.brandbar{position:relative;z-index:3;background:linear-gradient(180deg,#0B0E13,#101520 78%);transition:background-color .25s var(--ease)}
.brandbar__inner{display:flex;align-items:center;gap:clamp(12px,3vw,32px);min-height:66px;padding-block:10px;transition:min-height .25s var(--ease),padding .25s var(--ease)}
.brandbar__line{display:block;height:1px;background:linear-gradient(90deg,transparent,rgba(232,178,58,.55),rgba(62,123,250,.35),transparent)}

.brand{display:inline-flex;align-items:center;gap:12px;text-decoration:none;color:inherit;flex:0 0 auto}
.brand:hover{color:inherit}
.brand__mark{
  position:relative;width:40px;height:40px;flex:0 0 auto;border-radius:50%;
  display:grid;place-items:center;
  background:radial-gradient(circle at 30% 25%,rgba(247,217,122,.35),transparent 62%),var(--ink-layer);
  border:1px solid rgba(232,178,58,.55);
  transition:width .25s var(--ease),height .25s var(--ease);
}
.brand__ring{position:absolute;inset:6px;border:2px solid var(--gold);border-top-color:transparent;border-radius:50%;transform:rotate(24deg)}
.brand__core{width:12px;height:12px;border-radius:50%;background:linear-gradient(180deg,var(--gold-glow),var(--gold))}
.brand__text{display:flex;flex-direction:column;gap:2px;min-width:0}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:19px;line-height:1.2;letter-spacing:.02em;color:var(--text-dark)}
.brand__tagline{font-size:12.5px;line-height:1.3;letter-spacing:.04em;color:var(--muted)}

.brandbar__meta{
  display:none;font-family:var(--font-data);font-size:12.5px;letter-spacing:.16em;
  color:rgba(245,247,250,.42);transition:opacity .25s var(--ease);
}
.brandbar__actions{margin-left:auto;display:flex;align-items:center;gap:10px}

.nav-toggle{
  display:inline-flex;align-items:center;gap:9px;padding:10px 16px 10px 14px;
  border:1px solid var(--line);border-radius:999px;background:transparent;
  color:var(--text-dark);font-size:14px;font-weight:700;letter-spacing:.02em;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--gold);color:var(--gold-glow)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;border-radius:2px;background:currentColor;transition:transform .25s var(--ease),opacity .2s var(--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)}

/* 移动端：栏目条折叠为右侧抽屉 */
.navbar{
  position:fixed;top:0;right:0;bottom:0;z-index:2;
  width:min(84vw,340px);overflow-y:auto;
  padding:calc(82px + env(safe-area-inset-top,0px)) var(--gutter) 34px;
  background:linear-gradient(180deg,#12171F,#0B0E13);
  border-left:1px solid var(--line);
  box-shadow:-30px 0 80px rgba(0,0,0,.62);
  transform:translateX(104%);visibility:hidden;
  transition:transform .3s var(--ease),visibility .3s var(--ease);
}
.navbar[data-open]{transform:translateX(0);visibility:visible}
.nav-list{display:grid;gap:4px}
.nav-list__link{
  display:block;padding:13px 12px;border-radius:var(--r-sm);
  border-left:3px solid transparent;text-decoration:none;
  font-weight:700;font-size:16.5px;color:rgba(245,247,250,.8);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.nav-list__link:hover{background:rgba(232,178,58,.1);color:var(--gold-glow)}
.nav-list__link[aria-current="page"]{color:var(--gold);background:rgba(232,178,58,.13);border-left-color:var(--gold)}
.navbar__hint{display:none;font-family:var(--font-data);font-size:12px;letter-spacing:.14em;color:var(--muted)}

.nav-scrim{position:fixed;inset:0;z-index:1;background:rgba(6,8,12,.66);opacity:0;pointer-events:none;transition:opacity .3s var(--ease)}
.nav-scrim[data-open]{opacity:1;pointer-events:auto}

/* 桌面 / 平板：栏目条回到顶部横排并吸顶 */
@media (min-width:900px){
  .navbar{
    position:static;transform:none;visibility:visible;width:auto;overflow:visible;
    padding:0;border-left:0;box-shadow:none;background:rgba(21,26,34,.92);
    border-top:1px solid var(--line);border-bottom:1px solid var(--line);
    backdrop-filter:blur(14px) saturate(130%);
    -webkit-backdrop-filter:blur(14px) saturate(130%);
  }
  .nav-scrim{display:none}
  html.nav-open{overflow:auto}
  .navbar__inner{display:flex;align-items:center;justify-content:space-between;gap:24px;min-height:56px}
  .nav-list{display:flex;align-items:center;gap:clamp(2px,1.1vw,14px)}
  .nav-list__link{
    position:relative;padding:16px 8px;border-left:0;border-radius:0;
    background:transparent;font-size:15px;font-weight:700;color:rgba(245,247,250,.72);
  }
  .nav-list__link::after{
    content:"";position:absolute;left:8px;right:8px;bottom:9px;height:2px;
    background:linear-gradient(90deg,var(--gold),var(--orange));
    transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
  }
  .nav-list__link:hover{background:transparent;color:var(--gold-glow)}
  .nav-list__link:hover::after{transform:scaleX(1)}
  .nav-list__link[aria-current="page"]{background:transparent;color:var(--gold);border-left-color:transparent}
  .nav-list__link[aria-current="page"]::after{transform:scaleX(1)}
  .navbar__hint{display:block}
  .nav-toggle{display:none}
}
@media (min-width:1100px){
  .brandbar__meta{display:block}
}
/* 滚动后的紧凑态 */
.site-header[data-compact] .brandbar{background:#0A0D12}
.site-header[data-compact] .brandbar__inner{min-height:54px;padding-block:6px}
.site-header[data-compact] .brand__mark{width:30px;height:30px}
.site-header[data-compact] .brand__ring{inset:4px}
.site-header[data-compact] .brand__core{width:9px;height:9px}
.site-header[data-compact] .brand__tagline{display:none}
.site-header[data-compact] .brandbar__meta{opacity:.35}

/* 11 ── 页脚 ─────────────────────────────────────────── */
.site-footer{position:relative;background:linear-gradient(180deg,#0B0E13 0%,#10141C 100%);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,transparent,var(--gold),var(--orange),transparent);opacity:.75}
.footer__inner{display:grid;gap:clamp(28px,4vw,54px);grid-template-columns:minmax(0,1fr);padding-block:clamp(44px,6vw,76px)}
.footer__brand .brand--footer{margin-bottom:0}
.footer__pitch{margin:16px 0 20px;font-size:15px;line-height:1.75;color:var(--muted);max-width:36ch}
.footer__cta{text-decoration:none}
.footer__columns{display:grid;gap:clamp(22px,3vw,40px);grid-template-columns:minmax(0,1fr)}
.footer__title{
  font-family:var(--font-display);font-size:13px;font-weight:700;
  letter-spacing:.2em;color:var(--gold);margin:0 0 14px;
}
.footer__list{display:grid;gap:10px}
.footer__link{
  display:inline-block;font-size:14.5px;line-height:1.6;
  color:rgba(245,247,250,.68);text-decoration:none;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer__link:hover{color:var(--gold-glow);transform:translateX(3px)}
.footer__link[aria-current="page"]{color:var(--gold)}
.footer__link--sm{font-size:13px}
.footer__bottom{border-top:1px solid var(--line);background:rgba(0,0,0,.28)}
.footer__bottom-inner{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  padding-block:20px 28px;font-size:13px;color:var(--muted);
}
.footer__legal{font-family:var(--font-data);letter-spacing:.04em;color:rgba(245,247,250,.55)}
.footer__legal-links{display:flex;flex-wrap:wrap;gap:16px}
.footer__note{flex:1 1 260px}
.footer__copy{font-family:var(--font-data);letter-spacing:.04em;margin-left:auto}
@media (min-width:600px){
  .footer__columns{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (min-width:900px){
  .footer__inner{grid-template-columns:minmax(260px,1.1fr) 2fr}
}

/* 返回顶部 */
.to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:55;
  width:50px;height:50px;border-radius:50%;display:grid;place-items:center;
  background:rgba(21,26,34,.92);border:1px solid rgba(232,178,58,.45);color:var(--gold);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  opacity:0;visibility:hidden;transform:translateY(14px);
  transition:opacity .25s var(--ease),transform .25s var(--ease),visibility .25s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:rgba(232,178,58,.18);color:var(--gold-glow)}
.to-top__icon{font-size:18px;line-height:1}

/* 12 ── 章节目录跟随 ─────────────────────────────────── */
.toc{display:none}
@media (min-width:1000px){.toc{display:block}}
.toc__list{display:grid;gap:4px;border-left:2px solid var(--line)}
.toc__link{
  display:block;padding:6px 0 6px 14px;margin-left:-2px;
  border-left:2px solid transparent;font-size:14px;line-height:1.6;
  color:rgba(245,247,250,.6);text-decoration:none;
  transition:color .2s var(--ease),border-color .2s var(--ease);
}
.toc__link:hover{color:var(--gold-glow)}
.toc__link[aria-current="true"]{color:var(--gold);border-left-color:var(--gold)}

/* 13 ── 标签页 ───────────────────────────────────────── */
.tablist{
  display:flex;flex-wrap:wrap;gap:8px;padding:6px;
  background:rgba(245,247,250,.05);border:1px solid var(--line);border-radius:999px;
}
.tab{
  padding:11px 20px;border-radius:999px;font-family:var(--font-display);
  font-weight:700;font-size:14px;color:rgba(245,247,250,.7);
  transition:background-color .2s var(--ease),color .2s var(--ease);
}
.tab:hover{color:var(--gold-glow)}
.tab[aria-selected="true"]{background:var(--gold);color:#1B1204}
.tab-panel{padding-top:clamp(18px,2.6vw,30px)}
.tab-panel[hidden]{display:none}

/* 14 ── 显现动效 ─────────────────────────────────────── */
.reveal{opacity:0;transform:translateY(20px);transition:opacity .45s var(--ease),transform .45s var(--ease)}
.reveal.is-visible{opacity:1;transform:none}
.reveal--delay-1{transition-delay:.08s}
.reveal--delay-2{transition-delay:.16s}
.reveal--delay-3{transition-delay:.24s}

/* 15 ── 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;
  }
  .reveal{opacity:1!important;transform:none!important}
  .btn:hover,.footer__link:hover{transform:none}
  .scroll-rail__bar{transition:none}
}