/* =========================================================
   完美体育CN — /assets/site.css
   共享外壳：变量 / reset / 排版 / 头部 / 页脚 / 基础组件
   ========================================================= */

:root{
  --bg:#070E22;
  --panel:#0E1730;
  --line:#1E2C4F;
  --cyan:#22E0FF;
  --orange:#FF6B21;
  --purple:#8A5CFF;
  --ink:#E9EDF6;
  --muted:#8C9BB8;
  --green:#2FD98B;
  --red:#FF4D6A;
  --deep:#04101F;

  --font-display:"Archivo Narrow","Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-serif:"Noto Serif SC","Source Han Serif SC",Georgia,"Songti SC",serif;
  --font-body:"Source Han Sans SC","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1240px;
  --pad-x:clamp(16px,4vw,40px);
  --radius:3px;
  --ease:cubic-bezier(.2,.7,.2,1);
  --t-fast:180ms;
  --t-mid:320ms;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  min-height:100vh;
  color:var(--ink);
  background-color:var(--bg);
  background-image:
    radial-gradient(760px 420px at 6% -6%, rgba(34,224,255,.10), transparent 62%),
    radial-gradient(680px 430px at 98% 0%, rgba(138,92,255,.13), transparent 64%),
    linear-gradient(to right, rgba(30,44,79,.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,44,79,.34) 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  background-repeat:no-repeat,no-repeat,repeat,repeat;
  background-position:0 0,0 0,center 0,center 0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,svg,video{max-width:100%;height:auto;display:block}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--cyan);text-underline-offset:3px}
ul,ol{margin:0;padding:0}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.18;
  letter-spacing:-.01em;
  color:var(--ink);
}
p{margin:0}
::selection{background:var(--cyan);color:var(--deep)}
:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:2px}
#main-content{scroll-margin-top:150px}
html{scrollbar-color:var(--line) var(--bg)}

/* ---------- 排版层级 12/15/19/24/30/38/48/64 ---------- */
.t-64{font-size:clamp(38px,6vw,64px)}
.t-48{font-size:clamp(30px,4.6vw,48px)}
.t-38{font-size:clamp(26px,3.4vw,38px)}
.t-30{font-size:clamp(22px,2.6vw,30px)}
.t-24{font-size:clamp(19px,2vw,24px)}
.t-19{font-size:19px}
.t-15{font-size:15px}
.t-12{font-size:12px}
.serif{font-family:var(--font-serif);font-weight:600;letter-spacing:.01em}
.mono{font-family:var(--font-mono);letter-spacing:.04em;font-variant-numeric:tabular-nums}

.sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0
}

/* ---------- 容器与网格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--pad-x);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,28px);
}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-12{grid-column:1 / -1}

/* ---------- 区块与主题带 ---------- */
.section{padding-block:clamp(48px,7vw,96px)}
.section-head{display:grid;gap:12px;max-width:56rem;margin-bottom:clamp(24px,3.4vw,44px)}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--cyan)
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--cyan);flex:0 0 auto}
.section-title{font-size:clamp(24px,3.4vw,38px)}
.section-note{margin:0;color:var(--muted);font-size:15px;max-width:38em}
.band{
  position:relative;
  border-block:1px solid var(--line);
  padding-block:clamp(26px,4vw,44px);
  background:linear-gradient(102deg, rgba(34,224,255,.12) 0%, rgba(138,92,255,.12) 52%, rgba(255,107,33,.10) 100%);
  overflow:hidden;
}
.band::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(102deg, transparent 0 62%, rgba(7,14,34,.88) 62.4% 100%);
}
.band > *{position:relative;z-index:1}
.band-title{font-size:clamp(20px,2.6vw,30px)}
.band-sub{margin:8px 0 0;color:var(--muted);font-size:14px;max-width:36em}

/* ---------- 面板 / 卡片 / 玻璃层 ---------- */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.glass{
  position:relative;
  background:linear-gradient(158deg, rgba(22,34,68,.74), rgba(14,23,48,.52));
  border:1px solid rgba(138,92,255,.30);
  border-radius:var(--radius);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:clamp(16px,2.2vw,26px);
  transition:border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}
.card::before{
  content:"";position:absolute;left:-1px;top:-1px;width:28px;height:28px;
  border-top:2px solid var(--cyan);border-left:2px solid var(--cyan);
  opacity:0;transition:opacity var(--t-fast) var(--ease);pointer-events:none
}
.card:hover{border-color:rgba(34,224,255,.55);background:#101B38}
.card:hover::before{opacity:1}
.card-head{margin-bottom:12px}
.card-title{font-size:19px}
.card-body{color:var(--muted);font-size:15px}

/* ---------- 数据 ---------- */
.stat{display:grid;gap:6px}
.stat-num{
  font-family:var(--font-mono);font-weight:700;line-height:1;letter-spacing:-.02em;
  color:var(--cyan);font-size:clamp(30px,5vw,56px);
}
.stat-num.is-orange{color:var(--orange)}
.stat-label{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted)
}
.stat-sub{color:var(--muted);font-size:13px}
.data-key{color:var(--cyan)}
.data-hot{color:var(--orange)}
.data-pos{color:var(--green)}
.data-neg{color:var(--red)}

/* ---------- 标签牌 ---------- */
.tag{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.tag-idx{
  display:inline-flex;align-items:center;justify-content:center;
  width:28px;height:28px;flex:0 0 auto;border-radius:2px;
  background:var(--cyan);color:var(--deep);
  font-family:var(--font-mono);font-weight:700;font-size:12px;letter-spacing:0
}
.tag-idx--orange{background:var(--orange)}
.tag-chip{
  display:inline-flex;align-items:center;
  padding:4px 10px;border:1px solid var(--line);border-radius:999px;
  font-family:var(--font-mono);font-size:11px;color:var(--muted);
  transition:border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease)
}
.tag-chip:hover{border-color:var(--cyan);color:var(--cyan)}

/* ---------- 胶囊滑动带 ---------- */
.pill-row{
  display:flex;gap:10px;overflow-x:auto;padding:4px 2px 14px;
  scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch;
  scrollbar-width:thin;
}
.pill{
  flex:0 0 auto;scroll-snap-align:start;
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 15px;border:1px solid var(--line);border-radius:999px;
  background:var(--panel);color:var(--ink);text-decoration:none;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;
  transition:border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease)
}
.pill:hover{border-color:var(--cyan);color:var(--cyan)}
.pill[aria-current="true"]{border-color:var(--cyan);background:rgba(34,224,255,.14);color:var(--cyan)}

/* ---------- 侧边悬浮时间轴 ---------- */
.rail{
  position:sticky;top:170px;display:flex;flex-direction:column;gap:6px;
  font-family:var(--font-mono);font-size:12px
}
.rail-link{
  position:relative;display:flex;align-items:center;min-height:34px;
  padding:6px 0 6px 18px;border-left:1px solid var(--line);
  color:var(--muted);text-decoration:none;
  transition:color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease)
}
.rail-link::before{
  content:"";position:absolute;left:-4.5px;top:50%;margin-top:-4px;
  width:8px;height:8px;border-radius:50%;background:var(--line);
  transition:background-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease)
}
.rail-link:hover{color:var(--ink)}
.rail-link[aria-current="true"]{color:var(--cyan);border-left-color:var(--cyan)}
.rail-link[aria-current="true"]::before{background:var(--cyan);box-shadow:0 0 0 4px rgba(34,224,255,.16)}

/* ---------- 图片容器（页面阶段放置占位） ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16 / 9;border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(150deg,#0E1730 0%,#070E22 100%)
}
.media-frame img{width:100%;height:100%;object-fit:cover;filter:saturate(.92) contrast(1.06)}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.45;
  background-image:
    linear-gradient(to right, rgba(30,44,79,.9) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30,44,79,.9) 1px, transparent 1px);
  background-size:48px 48px
}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}
.media-cap{
  margin-top:12px;padding-top:10px;border-top:1px dashed var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--muted)
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 16px;border:1px solid var(--line);border-radius:2px;
  background:var(--panel);color:var(--ink);text-decoration:none;white-space:nowrap;
  font-family:var(--font-display);font-weight:700;font-size:13px;letter-spacing:.06em;
  transition:border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease)
}
.btn:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(34,224,255,.08)}
.btn:active{border-color:var(--orange);color:var(--orange)}
.btn-ghost{background:transparent}
.btn-cta{
  border-color:transparent;color:var(--deep);
  background:linear-gradient(120deg,var(--cyan) 0%,var(--purple) 100%)
}
.btn-cta:hover{
  color:var(--deep);border-color:transparent;background:linear-gradient(120deg,#5CEAFF 0%,#A87BFF 100%);
  box-shadow:0 10px 28px -14px rgba(34,224,255,.9)
}
.btn-cta:active{background:linear-gradient(120deg,var(--orange) 0%,var(--purple) 100%);color:var(--deep)}

/* ---------- 面包屑 / 正文 ---------- */
.crumbs{margin-bottom:clamp(18px,2.6vw,30px)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px;list-style:none;font-family:var(--font-mono);font-size:12px}
.crumbs a{color:var(--muted);text-decoration:none;transition:color var(--t-fast) var(--ease)}
.crumbs a:hover{color:var(--cyan)}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li + li::before{content:"/";color:var(--line)}
.crumbs [aria-current="page"]{color:var(--ink)}

.prose{max-width:38em;font-size:16px;line-height:1.9}
.prose p{margin:0 0 1.1em}
.prose h2{margin:1.8em 0 .6em;font-family:var(--font-serif);font-size:24px;font-weight:600}
.prose h3{margin:1.5em 0 .5em;font-size:19px}
.prose ul,.prose ol{margin:0 0 1.2em;padding-left:1.2em}
.prose li{margin-bottom:.4em}
.prose a{color:var(--cyan);text-decoration:none;border-bottom:1px solid rgba(34,224,255,.35)}
.prose a:hover{border-bottom-color:var(--cyan)}
.prose strong{color:#F5F8FF}

/* =========================================================
   头部
   ========================================================= */
.skip-link{
  position:fixed;left:16px;top:-64px;z-index:200;
  padding:10px 16px;border-radius:2px;
  background:var(--cyan);color:var(--deep);
  font-family:var(--font-display);font-weight:700;font-size:13px;text-decoration:none;
  transition:top var(--t-fast) var(--ease)
}
.skip-link:focus{top:16px}

.site-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg, rgba(7,14,34,.97) 0%, rgba(7,14,34,.88) 100%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
  transition:border-color var(--t-mid) var(--ease), box-shadow var(--t-mid) var(--ease)
}
.site-header.is-scrolled{
  border-bottom-color:rgba(34,224,255,.4);
  box-shadow:0 16px 34px -30px rgba(34,224,255,.9)
}
.hd-progress{position:absolute;left:0;right:0;top:0;height:2px;background:rgba(30,44,79,.7)}
.hd-progress-fill{
  display:block;height:100%;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--purple) 62%,var(--orange) 100%)
}
.hd-inner{position:relative;padding-block:0}

.hd-strip{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:6px 22px;
  padding-block:9px;border-bottom:1px dashed var(--line);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted)
}
.hd-strip-item{display:inline-flex;align-items:center;gap:8px}
.dot{width:6px;height:6px;border-radius:50%;flex:0 0 auto;background:var(--muted)}
.dot-cyan{background:var(--cyan);box-shadow:0 0 0 3px rgba(34,224,255,.18)}
.hd-strip-ver{color:var(--orange)}

.hd-masthead{
  display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:18px;
  padding-block:14px
}
.hd-rule{position:relative;height:1px;background:linear-gradient(90deg,transparent 0%, rgba(30,44,79,.95) 42%, var(--line) 100%)}
.hd-rule:last-of-type{background:linear-gradient(90deg, var(--line) 0%, rgba(30,44,79,.95) 58%, transparent 100%)}
.hd-rule::after{
  content:"";position:absolute;top:-2px;width:22px;height:5px;
  background:repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 5px)
}
.hd-rule:first-of-type::after{right:0}
.hd-rule:last-of-type::after{left:0;background:repeating-linear-gradient(90deg, var(--cyan) 0 1px, transparent 1px 5px);opacity:.75}

.brand{display:block;text-align:center;color:var(--ink);text-decoration:none}
.brand-mark{
  display:block;font-family:var(--font-display);font-weight:900;
  font-size:clamp(22px,3.2vw,34px);line-height:1.1;letter-spacing:-.01em;
  transition:color var(--t-fast) var(--ease)
}
.brand-sub{
  display:block;margin-top:5px;font-family:var(--font-mono);
  font-size:10px;letter-spacing:.3em;text-transform:uppercase;color:var(--muted);
  transition:color var(--t-fast) var(--ease)
}
.brand:hover .brand-mark{color:var(--cyan)}
.brand:hover .brand-sub{color:var(--orange)}

.hd-barnav{
  position:relative;display:flex;align-items:center;justify-content:center;
  min-height:58px;border-top:1px solid var(--line)
}
.nav-list{display:flex;align-items:center;gap:clamp(10px,2vw,26px);list-style:none}
.nav-link{
  position:relative;display:inline-block;padding:18px 2px;
  color:var(--ink);text-decoration:none;
  font-family:var(--font-display);font-weight:700;font-size:14px;letter-spacing:.06em;
  border-bottom:2px solid transparent;
  transition:color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease)
}
.nav-link::before{
  content:"";position:absolute;left:50%;top:8px;width:6px;height:6px;margin-left:-3px;
  background:var(--cyan);opacity:0;transform:translateY(4px);
  transition:opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease)
}
.nav-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.nav-link:hover::before,.nav-link[aria-current="page"]::before{opacity:1;transform:translateY(0)}
.nav-link[aria-current="page"]{color:var(--cyan);border-bottom-color:var(--orange)}

.hd-cta{position:absolute;right:0;top:50%;transform:translateY(-50%)}

.nav-toggle{
  position:absolute;left:0;top:50%;transform:translateY(-50%);
  display:none;align-items:center;gap:8px;
  padding:9px 12px;border:1px solid var(--line);border-radius:2px;
  background:transparent;color:var(--ink);cursor:pointer;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  transition:border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease)
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{display:block;width:18px}
.nav-toggle-bars i{display:block;height:2px;margin:3px 0;background:currentColor;transition:transform var(--t-fast) var(--ease), opacity var(--t-fast) var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars i:nth-child(1){transform:translateY(5px) 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(-5px) rotate(-45deg)}

.hd-nav{display:block}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  position:relative;margin-top:clamp(64px,8vw,120px);
  background:linear-gradient(180deg, rgba(14,23,48,.62) 0%, rgba(7,14,34,.98) 72%);
  border-top:1px solid var(--line)
}
.ft-slash{
  height:70px;
  background-image:
    repeating-linear-gradient(90deg, rgba(30,44,79,.7) 0 1px, transparent 1px 48px),
    linear-gradient(108deg, rgba(34,224,255,.16) 0% 30%, rgba(138,92,255,.18) 30% 62%, rgba(255,107,33,.14) 62% 100%);
}
.ft-inner{padding-block:clamp(28px,4vw,48px) clamp(20px,3vw,32px)}
.ft-top{
  display:grid;grid-template-columns:minmax(200px,1fr) 2fr;gap:clamp(24px,4vw,56px);
  padding-bottom:clamp(22px,3vw,34px)
}
.ft-mark{font-family:var(--font-display);font-weight:900;font-size:22px;letter-spacing:-.01em}
.ft-tag{margin-top:8px;font-family:var(--font-serif);font-size:15px;color:var(--muted)}
.ft-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,36px)}
.ft-col-title{
  display:flex;align-items:center;gap:8px;margin:0 0 14px;
  font-family:var(--font-mono);font-size:11px;font-weight:400;
  letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)
}
.ft-col-title::before{content:"";width:8px;height:8px;background:var(--orange)}
.ft-list{list-style:none;display:grid;gap:9px}
.ft-link{
  color:var(--ink);text-decoration:none;font-size:14px;
  border-bottom:1px solid transparent;
  transition:color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease)
}
.ft-link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.ft-link[aria-current="page"]{color:var(--orange);border-bottom-color:rgba(255,107,33,.5)}
.ft-meta{
  display:grid;gap:8px;padding-top:20px;border-top:1px dashed var(--line);
  font-size:13px;color:var(--muted)
}
.ft-meta-line{margin:0}
.ft-mono{font-family:var(--font-mono);color:var(--ink);letter-spacing:.02em}
.ft-fine{font-size:12px}
.ft-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:20px;padding-top:16px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:12px;color:var(--muted)
}
.ft-icp{color:var(--ink)}
.ft-copy{margin:0}

/* =========================================================
   显现动效
   ========================================================= */
.has-js [data-reveal]{
  opacity:0;transform:translateY(12px);
  transition:opacity 520ms var(--ease), transform 520ms var(--ease)
}
.has-js [data-reveal].is-in{opacity:1;transform:none}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1024px){
  .span-4,.span-5{grid-column:span 6}
  .rail{display:none}
  .ft-top{grid-template-columns:1fr;gap:28px}
}

@media (max-width:860px){
  body{font-size:15px}
  .span-4,.span-5,.span-7,.span-8{grid-column:1 / -1}

  .hd-masthead{padding-block:12px}
  .hd-rule{display:none}
  .hd-masthead{grid-template-columns:1fr}

  .hd-barnav{min-height:54px}
  .nav-toggle{display:inline-flex}
  .hd-cta{right:0;padding:8px 12px;font-size:12px}
  .hd-nav{
    display:none;position:absolute;left:calc(var(--pad-x) * -1 + 2px);right:calc(var(--pad-x) * -1 + 2px);
    top:100%;z-index:90;
    padding:6px 10px 14px;
    background:linear-gradient(180deg, rgba(9,17,38,.99) 0%, rgba(7,14,34,.99) 100%);
    border:1px solid var(--line);border-top:none;border-radius:0 0 var(--radius) var(--radius);
    max-height:min(72vh,540px);overflow-y:auto
  }
  .hd-nav[data-open]{display:block}
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-link{display:block;padding:15px 12px;border-bottom:1px dashed var(--line);font-size:15px;letter-spacing:.04em}
  .nav-link::before{display:none}
  .nav-link:last-child{border-bottom:none}
  .nav-link[aria-current="page"]{background:rgba(34,224,255,.09);border-bottom-color:var(--line)}

  .ft-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
  .ft-base{flex-direction:column;align-items:flex-start;gap:8px}
}

@media (max-width:560px){
  .hd-strip{gap:4px 14px;padding-block:8px;font-size:10px;letter-spacing:.12em}
  .hd-strip-item:not(.hd-strip-ver){display:none}
  .hd-strip-ver{color:var(--muted)}
  .brand-mark{font-size:22px}
  .brand-sub{letter-spacing:.22em}
  .ft-cols{grid-template-columns:1fr}
  .ft-slash{height:52px}
  .media-frame--wide{aspect-ratio:16 / 9}
}

@media (max-width:400px){
  .hd-cta{display:none}
}

/* =========================================================
   无障碍与减弱动效
   ========================================================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important
  }
  .has-js [data-reveal]{opacity:1;transform:none}
}