/* =========================================================
   幻影体育APP · 简体版 /assets/site.css
   暗夜赛场全息体系：蓝图网格 + 轨道导航 + 粗野主义面板
   ========================================================= */

:root{
  --ink-900:#05060B;
  --ink-800:#0D0F1A;
  --ink-700:#141830;
  --purple:#6C3BFF;
  --purple-lift:#9A7BFF;
  --cyan:#00F0C8;
  --orange:#FF7A1A;
  --white:#F4F7FF;
  --muted:#98A1C6;
  --line:#2A3160;
  --line-soft:rgba(42,49,96,.5);
  --grid-line:rgba(42,49,96,.34);
  --rail-w:84px;
  --bar-h:62px;
  --radius:6px;
  --maxw:1280px;
  --ease:cubic-bezier(.22,.7,.28,1);
  --shadow-card:4px 4px 0 rgba(6,7,14,.85);
  --font-head:"Archivo Black","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-body:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
main{display:block}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0}
a{color:inherit}
table{border-collapse:collapse}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}

/* ---------- 中文排版与页面基底 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    linear-gradient(90deg,var(--grid-line) 1px,transparent 1px),
    linear-gradient(180deg,var(--grid-line) 1px,transparent 1px),
    radial-gradient(900px 520px at 84% -8%,rgba(108,59,255,.28),transparent 70%),
    radial-gradient(700px 480px at 4% 22%,rgba(0,240,200,.13),transparent 72%);
  background-size:96px 96px,96px 96px,auto,auto;
  background-repeat:repeat,repeat,no-repeat,no-repeat;
  color:var(--white);
  font-family:var(--font-body);
  font-size:16.5px;
  line-height:1.75;
  font-weight:400;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3{font-family:var(--font-head);font-weight:900;letter-spacing:-.02em;line-height:1.06}
h1{font-size:clamp(38px,7vw,78px)}
h2{font-size:clamp(28px,4.4vw,52px)}
h3{font-size:clamp(20px,2.6vw,30px)}
h4{font-size:18px;font-weight:700;line-height:1.4}
p{max-width:78ch}
.mono,.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
#main-content{display:block;scroll-margin-top:calc(var(--bar-h) + 16px)}

/* ---------- 容器与章节 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 clamp(16px,3.4vw,48px)}
.section{position:relative;padding:clamp(40px,6vw,88px) 0}
.section--tight{padding:clamp(24px,4vw,48px) 0}
.section--wide{background:linear-gradient(180deg,rgba(13,15,26,.92),rgba(5,6,11,.25));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section__head{display:flex;flex-direction:column;gap:12px;max-width:860px;margin-bottom:clamp(20px,3vw,38px)}
.section__num{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:12px;letter-spacing:.22em;color:var(--purple-lift);text-transform:uppercase}
.section__num::before{content:"";width:26px;height:2px;background:var(--purple);flex:0 0 auto}
.section__title{font-family:var(--font-head);font-size:clamp(26px,4vw,48px);letter-spacing:-.02em;line-height:1.08}
.section__lead{color:var(--muted);font-size:17px;line-height:1.7;max-width:66ch}
.eyebrow{font-family:var(--font-mono);font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--cyan)}
.lead{font-size:18px;line-height:1.75;color:var(--white)}
.divider{height:2px;border:0;margin:clamp(26px,4vw,52px) 0;background:linear-gradient(90deg,var(--purple),var(--cyan) 42%,var(--line))}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:46px;padding:0 20px;border:2px solid var(--line);border-radius:var(--radius);background:var(--ink-700);color:var(--white);font-family:var(--font-body);font-size:15px;font-weight:600;line-height:1.2;text-decoration:none;cursor:pointer;box-shadow:4px 4px 0 rgba(42,49,96,.65);transition:transform .16s var(--ease),box-shadow .16s var(--ease),border-color .16s var(--ease),background .16s var(--ease)}
.btn:hover{transform:translate(-2px,-2px);border-color:var(--cyan);box-shadow:6px 6px 0 rgba(0,240,200,.28)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 rgba(0,0,0,.6)}
.btn--primary{background:var(--purple);border-color:var(--purple-lift);box-shadow:4px 4px 0 rgba(0,240,200,.3)}
.btn--primary:hover{background:var(--purple-lift);border-color:var(--cyan)}
.btn--ghost{background:transparent;border-color:var(--cyan);color:var(--cyan);box-shadow:4px 4px 0 rgba(0,240,200,.18)}
.btn--ghost:hover{background:rgba(0,240,200,.12)}

/* ---------- 标签 / 卡片 / 数据 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border:1px solid var(--line);border-radius:3px;background:var(--ink-700);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:var(--muted)}
.tag--purple{color:var(--purple-lift);border-color:rgba(108,59,255,.6);background:rgba(108,59,255,.14)}
.tag--cyan{color:var(--cyan);border-color:rgba(0,240,200,.5);background:rgba(0,240,200,.1)}
.tag--orange{color:var(--orange);border-color:rgba(255,122,26,.55);background:rgba(255,122,26,.12)}
.card{position:relative;background:var(--ink-700);border:2px solid var(--line);border-radius:var(--radius);padding:clamp(16px,2.4vw,26px);box-shadow:var(--shadow-card)}
.card--purple{border-color:var(--purple);box-shadow:4px 4px 0 rgba(108,59,255,.35)}
.card--cyan{border-color:rgba(0,240,200,.55);box-shadow:4px 4px 0 rgba(0,240,200,.22)}
.card__title{font-family:var(--font-head);font-size:19px;letter-spacing:-.01em;line-height:1.25;margin-bottom:8px}
.card__meta{font-family:var(--font-mono);font-size:12px;color:var(--muted);letter-spacing:.04em}
.card__text{color:var(--muted);font-size:15.5px;line-height:1.7}
.stat{display:flex;flex-direction:column;gap:6px}
.stat__value{font-family:var(--font-mono);font-size:clamp(26px,3.6vw,44px);line-height:1;letter-spacing:-.02em;color:var(--cyan)}
.stat__label{font-size:13px;color:var(--muted);letter-spacing:.04em}
.stat--purple .stat__value{color:var(--purple-lift)}
.callout{border-left:3px solid var(--orange);background:rgba(255,122,26,.1);padding:12px 16px;border-radius:0 var(--radius) var(--radius) 0;font-size:15px;line-height:1.7}
.callout--cyan{border-left-color:var(--cyan);background:rgba(0,240,200,.08)}
.link-more{display:inline-flex;align-items:center;gap:8px;font-weight:600;color:var(--cyan);text-decoration:none;border-bottom:2px solid rgba(0,240,200,.4);transition:border-color .16s var(--ease)}
.link-more::after{content:"→";font-family:var(--font-mono)}
.link-more:hover{border-bottom-color:var(--cyan)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(14px,2.2vw,24px)}
.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))}
.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,28px)}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-12{grid-column:span 12}

/* ---------- 面包屑 ---------- */
.breadcrumbs{margin-top:clamp(18px,3vw,34px)}
.breadcrumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--muted)}
.breadcrumbs li{display:flex;align-items:center;gap:8px}
.breadcrumbs li::after{content:"/";color:var(--line)}
.breadcrumbs li:last-child::after{content:""}
.breadcrumbs a{color:var(--muted);text-decoration:none;border-bottom:1px solid var(--line);transition:color .16s var(--ease),border-color .16s var(--ease)}
.breadcrumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.breadcrumbs [aria-current="page"]{color:var(--white)}

/* ---------- 正文排版 ---------- */
.prose{max-width:74ch;font-size:16.5px;line-height:1.8}
.prose p{margin:0 0 1.05em}
.prose h3{margin:1.6em 0 .55em;font-size:clamp(19px,2.2vw,24px)}
.prose ul,.prose ol{margin:0 0 1.05em;padding-left:1.35em}
.prose ul{list-style:square}
.prose ol{list-style:decimal}
.prose li{margin:.35em 0}
.prose a{color:var(--cyan);text-decoration:underline;text-underline-offset:3px}
.prose strong{color:var(--white)}
.prose code{font-family:var(--font-mono);font-size:.92em;background:var(--ink-700);border:1px solid var(--line);border-radius:3px;padding:1px 5px}

/* ---------- 数据表 ---------- */
.table-wrap{width:100%;overflow-x:auto;border:2px solid var(--line);border-radius:var(--radius);background:var(--ink-800);-webkit-overflow-scrolling:touch}
.data-table{width:100%;min-width:640px;font-size:15px}
.data-table th,.data-table td{padding:12px 14px;text-align:left;border-bottom:1px solid var(--line);vertical-align:top}
.data-table thead th{position:sticky;top:0;z-index:2;background:var(--ink-700);font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--cyan);white-space:nowrap}
.data-table tbody tr{transition:background .16s var(--ease)}
.data-table tbody tr:hover{background:rgba(108,59,255,.14)}
.data-table td.num{font-family:var(--font-mono);color:var(--cyan)}
.data-table tbody tr:last-child td{border-bottom:0}

/* ---------- 折叠面板 ---------- */
.fold{border:2px solid var(--line);border-radius:var(--radius);background:var(--ink-700);overflow:hidden}
.fold + .fold{margin-top:10px}
.fold > summary{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 16px;font-weight:600;cursor:pointer;list-style:none}
.fold > summary::-webkit-details-marker{display:none}
.fold > summary::after{content:"+";font-family:var(--font-mono);font-size:18px;line-height:1;color:var(--cyan)}
.fold[open] > summary::after{content:"–"}
.fold > summary:hover{background:rgba(108,59,255,.16)}
.fold__body{padding:14px 16px 18px;border-top:1px solid var(--line);color:var(--muted);font-size:15.5px;line-height:1.75}

/* ---------- 响应式图片容器 ---------- */
.media{position:relative;display:block;width:100%;min-height:180px;border:2px solid var(--line);border-radius:var(--radius);overflow:hidden;background:
  radial-gradient(120% 120% at 78% 10%,rgba(108,59,255,.55),transparent 58%),
  radial-gradient(90% 90% at 10% 90%,rgba(0,240,200,.32),transparent 62%),
  linear-gradient(180deg,#10132A,#080A14)}
.media::before{content:"";position:absolute;inset:0;background-image:
  linear-gradient(90deg,rgba(244,247,255,.07) 1px,transparent 1px),
  linear-gradient(180deg,rgba(244,247,255,.07) 1px,transparent 1px);
  background-size:28px 28px;pointer-events:none}
.media::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent 46%,rgba(5,6,11,.74));pointer-events:none}
.media > img{width:100%;height:100%;object-fit:cover;filter:saturate(.85) contrast(1.08) brightness(.82)}
.media__tag{position:absolute;left:12px;bottom:12px;z-index:2;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--cyan);background:rgba(5,6,11,.78);border:1px solid rgba(0,240,200,.45);border-radius:3px;padding:3px 8px}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}

/* ---------- 跳转链接 ---------- */
.skip-link{position:fixed;top:10px;left:10px;z-index:200;padding:10px 16px;background:var(--cyan);color:#05060B;font-size:14px;font-weight:700;text-decoration:none;border:2px solid #05060B;border-radius:var(--radius);transform:translateY(-180%);transition:transform .18s var(--ease)}
.skip-link:focus{transform:translateY(0)}

/* ---------- 阅读进度 ---------- */
.scroll-rail{position:fixed;top:0;left:0;right:0;height:3px;z-index:90;background:rgba(42,49,96,.55);pointer-events:none}
.scroll-rail__fill{display:block;width:0;height:100%;background:linear-gradient(90deg,var(--purple),var(--cyan));transition:width .12s linear}

/* ---------- 头部 / 顶部记分条 ---------- */
.site-header{position:relative;z-index:80}
.topbar{display:none;position:fixed;top:0;left:0;right:0;z-index:82;height:var(--bar-h);align-items:center;justify-content:space-between;gap:12px;padding:0 14px;background:rgba(13,15,26,.95);border-bottom:2px solid var(--line)}
.topbar__brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.topbar__mark{display:grid;place-items:center;width:34px;height:34px;background:var(--purple);color:var(--white);border:2px solid var(--purple-lift);border-radius:var(--radius);font-family:var(--font-head);font-size:17px;line-height:1;box-shadow:3px 3px 0 rgba(0,240,200,.3)}
.topbar__text{display:flex;flex-direction:column;line-height:1.2}
.topbar__name{font-family:var(--font-head);font-size:15px;letter-spacing:-.01em}
.topbar__tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--cyan)}
.nav-toggle{display:inline-flex;align-items:center;gap:9px;min-height:44px;padding:0 12px;background:var(--ink-700);color:var(--white);border:2px solid var(--line);border-radius:var(--radius);font-size:14px;font-weight:600;cursor:pointer;transition:border-color .16s var(--ease),color .16s var(--ease)}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:3px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;border-radius:1px;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.nav-toggle__label{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.14em}
.site-header[data-open="true"] .nav-toggle{border-color:var(--orange);color:var(--orange)}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 轨道导航 ---------- */
.rail{position:fixed;top:0;left:0;z-index:85;width:var(--rail-w);height:100vh;height:100dvh;display:flex;flex-direction:column;align-items:center;gap:14px;padding:14px 0 18px;background:linear-gradient(180deg,#0D0F1A 0%,#090B14 100%);border-right:2px solid var(--line);overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin}
.rail__brand{display:flex;flex-direction:column;align-items:center;gap:10px;text-decoration:none}
.rail__mark{display:grid;place-items:center;width:44px;height:44px;background:var(--purple);color:var(--white);border:2px solid var(--purple-lift);border-radius:var(--radius);font-family:var(--font-head);font-size:20px;line-height:1;box-shadow:3px 3px 0 rgba(0,240,200,.32)}
.rail__wordmark{writing-mode:vertical-rl;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.3em;color:var(--muted);text-transform:uppercase}
.rail__tagline{margin:0;writing-mode:vertical-rl;font-size:11px;letter-spacing:.26em;color:var(--cyan);opacity:.85}
.rail__list{list-style:none;display:flex;flex-direction:column;align-items:center;gap:5px;width:100%;padding-top:14px;border-top:1px solid var(--line)}
.rail__link{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;width:62px;min-height:58px;padding:9px 6px;border:1px solid transparent;border-radius:var(--radius);text-decoration:none;color:var(--white);transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease)}
.rail__idx{font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--muted)}
.rail__label{writing-mode:vertical-rl;font-size:13.5px;font-weight:500;letter-spacing:.16em}
.rail__link:hover{background:var(--ink-700);border-color:var(--line);color:var(--cyan)}
.rail__link:hover .rail__idx{color:var(--cyan)}
.rail__link[aria-current="page"]{background:linear-gradient(180deg,rgba(108,59,255,.34),rgba(108,59,255,.1));border-color:var(--purple);color:var(--cyan);box-shadow:inset 0 0 0 1px rgba(0,240,200,.22)}
.rail__link[aria-current="page"] .rail__idx{color:var(--cyan)}
.rail__foot{margin-top:auto;width:100%;display:flex;flex-direction:column;align-items:center;gap:12px;padding-top:14px;border-top:1px solid var(--line)}
.rail__utility{list-style:none;display:flex;flex-direction:column;align-items:center;gap:8px}
.rail__utility a{writing-mode:vertical-rl;font-size:11.5px;letter-spacing:.14em;color:var(--muted);text-decoration:none;padding:3px 2px;border-radius:4px;transition:color .16s var(--ease)}
.rail__utility a:hover{color:var(--cyan)}
.rail-feedback{position:relative;display:flex;flex-direction:column;align-items:center;gap:8px;padding:10px 8px;border:2px solid var(--orange);border-radius:var(--radius);background:rgba(255,122,26,.12);color:var(--orange);text-decoration:none;font-size:12px;transition:background .18s var(--ease)}
.rail-feedback:hover{background:rgba(255,122,26,.24)}
.rail-feedback__dot{width:9px;height:9px;border-radius:50%;background:var(--orange);animation:pulse-dot 1.6s ease-out infinite}
.rail-feedback__label{writing-mode:vertical-rl;font-weight:600;letter-spacing:.2em}
.rail-feedback__tip{position:absolute;left:calc(100% + 12px);top:50%;transform:translateY(-50%) translateX(-6px);white-space:nowrap;padding:6px 10px;background:var(--ink-700);border:1px solid var(--line);border-left:2px solid var(--orange);border-radius:4px;color:var(--white);font-size:12.5px;letter-spacing:.04em;opacity:0;pointer-events:none;transition:opacity .18s var(--ease),transform .18s var(--ease)}
.rail-feedback:hover .rail-feedback__tip,.rail-feedback:focus-visible .rail-feedback__tip{opacity:1;transform:translateY(-50%) translateX(0)}
@keyframes pulse-dot{
  0%{box-shadow:0 0 0 0 rgba(255,122,26,.55)}
  70%{box-shadow:0 0 0 11px rgba(255,122,26,0)}
  100%{box-shadow:0 0 0 0 rgba(255,122,26,0)}
}
.nav-scrim{position:fixed;top:var(--bar-h);left:0;right:0;bottom:0;z-index:84;background:rgba(5,6,11,.74);opacity:0;visibility:hidden;transition:opacity .2s var(--ease),visibility .2s var(--ease)}
.site-header[data-open="true"] .nav-scrim,.nav-scrim[data-open="true"]{opacity:1;visibility:visible}

/* ---------- 页脚：地图图例 ---------- */
.site-footer{position:relative;margin-top:clamp(40px,7vw,90px);padding:clamp(34px,5vw,64px) 0 26px;background:linear-gradient(180deg,#0A0C16,#05060B);border-top:2px solid var(--line)}
.site-footer::before{content:"";position:absolute;top:-2px;left:0;width:min(180px,40%);height:2px;background:linear-gradient(90deg,var(--purple),var(--cyan))}
.footer__grid{display:grid;grid-template-columns:minmax(250px,1fr) minmax(0,2.1fr);gap:clamp(24px,4vw,56px);align-items:start}
.footer__brand{display:flex;flex-direction:column;gap:14px}
.footer__brandlink{display:flex;align-items:center;gap:12px;text-decoration:none}
.footer__mark{display:grid;place-items:center;width:44px;height:44px;flex:0 0 auto;background:var(--purple);color:var(--white);border:2px solid var(--purple-lift);border-radius:var(--radius);font-family:var(--font-head);font-size:20px;line-height:1;box-shadow:3px 3px 0 rgba(0,240,200,.3)}
.footer__name{font-family:var(--font-head);font-size:17px;letter-spacing:-.01em;line-height:1.25}
.footer__tagline{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--cyan)}
.footer__contact-list{list-style:none;display:flex;flex-direction:column;gap:8px;font-size:14px}
.footer__contact-list li{display:flex;flex-wrap:wrap;gap:10px;align-items:baseline}
.footer__contact-label{flex:0 0 68px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--muted)}
.footer__contact-value{color:var(--white);word-break:break-word}
.footer__contact-note{margin:0;max-width:44ch;font-size:13px;line-height:1.7;color:var(--muted)}
.footer__cta{align-self:flex-start;margin-top:2px}
.footer__legend{display:flex;flex-direction:column;gap:14px;min-width:0}
.footer__legend-title{font-family:var(--font-mono);font-size:12px;font-weight:400;letter-spacing:.2em;color:var(--muted);text-transform:uppercase}
.footer__cols{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
.footer__col{background:#0B0D18;padding:18px 16px 20px}
.footer__col-title{display:flex;align-items:center;gap:8px;margin-bottom:12px;font-family:var(--font-body);font-size:14px;font-weight:600;letter-spacing:.02em;color:var(--white)}
.footer__col-title::before{content:attr(data-code);flex:0 0 auto;padding:1px 5px;border:1px solid var(--line);border-radius:3px;font-family:var(--font-mono);font-size:10px;letter-spacing:.08em;color:var(--purple-lift)}
.footer__links{list-style:none;display:flex;flex-direction:column;gap:8px}
.footer__link{display:inline-block;font-size:14.5px;color:var(--muted);text-decoration:none;border-bottom:1px solid transparent;transition:color .16s var(--ease),border-color .16s var(--ease)}
.footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__legal{margin-top:clamp(26px,4vw,44px);padding-top:18px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;justify-content:space-between;align-items:flex-start;gap:10px 26px}
.footer__legal-line{margin:0;font-family:var(--font-mono);font-size:12px;letter-spacing:.03em;color:var(--muted)}
.footer__meta{display:flex;flex-wrap:wrap;gap:8px 20px}
.footer__meta-item{font-family:var(--font-mono);font-size:12px;letter-spacing:.03em;color:var(--muted)}

/* ---------- 滚动显现与荧光扫过 ---------- */
html.js-reveal [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease);transition-delay:var(--reveal-delay,0ms)}
html.js-reveal [data-reveal].is-revealed{opacity:1;transform:none}
[data-sweep]{position:relative;overflow:hidden}
[data-sweep]::after{content:"";position:absolute;inset:0;pointer-events:none;opacity:0;background:linear-gradient(100deg,transparent 22%,rgba(0,240,200,.5) 50%,transparent 78%);transform:translateX(-110%)}
[data-sweep].is-swept::after{animation:sweep-pass .5s var(--ease) 1}
@keyframes sweep-pass{
  0%{opacity:.9;transform:translateX(-110%)}
  100%{opacity:0;transform:translateX(110%)}
}

/* ---------- 平板 / 移动 ---------- */
@media (max-width:1023px){
  body{padding-top:var(--bar-h)}
  .topbar{display:flex}
  .nav-scrim{display:block}
  .rail{
    top:var(--bar-h);height:calc(100dvh - var(--bar-h));
    width:min(302px,86vw);
    align-items:stretch;gap:14px;
    padding:18px 18px 28px;
    transform:translateX(-102%);
    transition:transform .26s var(--ease);
    box-shadow:10px 0 0 rgba(5,6,11,.5);
  }
  .site-header[data-open="true"] .rail,.rail[data-open="true"]{transform:translateX(0)}
  .rail__brand{flex-direction:row;align-items:center;gap:12px}
  .rail__mark{width:40px;height:40px;font-size:18px}
  .rail__wordmark{writing-mode:horizontal-tb;font-size:11.5px;letter-spacing:.18em}
  .rail__tagline{writing-mode:horizontal-tb;font-size:12px;letter-spacing:.12em}
  .rail__list{align-items:stretch;gap:4px;padding-top:12px}
  .rail__link{flex-direction:row;justify-content:flex-start;gap:14px;width:100%;min-height:48px;padding:0 12px}
  .rail__label{writing-mode:horizontal-tb;font-size:15px;letter-spacing:.06em}
  .rail__foot{align-items:stretch;gap:14px}
  .rail__utility{flex-direction:row;flex-wrap:wrap;gap:8px 10px}
  .rail__utility a{writing-mode:horizontal-tb;font-size:13px;letter-spacing:.02em;border:1px solid var(--line);border-radius:4px;padding:4px 9px}
  .rail-feedback{flex-direction:row;justify-content:center;align-items:center;gap:10px;padding:12px}
  .rail-feedback__label{writing-mode:horizontal-tb;letter-spacing:.12em}
  .rail-feedback__tip{display:none}
  .footer__grid{grid-template-columns:minmax(0,1fr)}
  .footer__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:900px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 6}
}
@media (max-width:640px){
  body{font-size:16px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .grid-12{grid-template-columns:minmax(0,1fr)}
  .span-3,.span-4,.span-5,.span-6,.span-7,.span-8,.span-9,.span-12{grid-column:span 1}
  .footer__cols{grid-template-columns:minmax(0,1fr)}
  .footer__legal{flex-direction:column}
  .btn{width:100%}
  .footer__cta{width:auto}
}

/* ---------- 桌面端 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w)}
  .topbar{display:none}
  .nav-scrim{display:none}
  .skip-link{left:calc(var(--rail-w) + 10px)}
  .scroll-rail{left:var(--rail-w)}
}
@media (min-width:1024px) and (max-height:860px){
  .rail{gap:10px;padding:12px 0 14px}
  .rail__wordmark{letter-spacing:.2em;font-size:10px}
  .rail__tagline{display:none}
  .rail__link{min-height:52px}
  .rail__utility a{font-size:11px}
}

/* ---------- 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;transition-delay:0ms !important}
  html.js-reveal [data-reveal]{opacity:1;transform:none}
  [data-sweep].is-swept::after{animation:none;opacity:0}
  .scroll-rail__fill{transition:none}
  .rail-feedback__dot{animation:none}
}