/* =========================================================
   /assets/site.css — 多宝体育 电脑版中文站 · 共享外壳样式
   深夜靛蓝底盘 / 堆叠画板 / 玻璃浮层 + 实色内容层
   ========================================================= */

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

/* ---------- tokens ---------- */
:root{
  --ink-950:#0B1030;
  --ink-900:#101744;
  --panel:#161E4A;
  --panel-2:#1B2456;
  --glass:rgba(42,54,112,.16);
  --glass-2:rgba(42,54,112,.30);
  --signal:#FF7A33;
  --signal-soft:#FF9155;
  --cyan:#35E0D4;
  --cyan-ink:#062825;
  --crimson:#9E2A3A;
  --white:#E9EEF9;
  --muted:#98A4C6;
  --gold:#E8B84B;
  --line:#34406E;
  --line-soft:rgba(52,64,110,.5);
  --radius:2px;
  --shell:1280px;
  --font-display:"Arial Narrow","Helvetica Neue Condensed","PingFang SC","Microsoft YaHei",Arial,sans-serif;
  --font-body:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"DejaVu Sans Mono","Courier New",monospace;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ---------- base ---------- */
html{scroll-padding-top:120px}
body{
  min-height:100vh;
  background-color:var(--ink-950);
  background-image:
    repeating-linear-gradient(0deg, rgba(233,238,249,.022) 0 1px, transparent 1px 4px),
    radial-gradient(1200px 620px at 10% -10%, rgba(42,54,112,.55), transparent 62%),
    radial-gradient(900px 520px at 98% 2%, rgba(53,224,212,.07), transparent 60%),
    radial-gradient(800px 600px at 50% 110%, rgba(158,42,58,.12), transparent 65%);
  color:var(--white);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
@media (min-width:1024px){ body{font-size:17px} }

:focus-visible{outline:2px solid var(--signal);outline-offset:2px;border-radius:2px}
::selection{background:var(--cyan);color:var(--cyan-ink)}

.mono{font-family:var(--font-mono);font-size:.92em;letter-spacing:.02em}
.muted{color:var(--muted)}

#main-content{display:block;scroll-margin-top:120px}
#main-content:focus{outline:none}

/* ---------- 排版 ---------- */
.display-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(34px,5vw,64px);
  line-height:1.05;
  letter-spacing:.07em;
  text-transform:uppercase;
  color:var(--white);
}
.section-title{
  font-family:var(--font-display);
  font-weight:800;
  font-size:clamp(28px,3.2vw,44px);
  line-height:1.12;
  letter-spacing:.06em;
  color:var(--white);
}
.panel-title{
  font-family:var(--font-display);
  font-weight:700;
  font-size:clamp(18px,2.1vw,22px);
  line-height:1.3;
  letter-spacing:.05em;
  color:var(--white);
}
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.lede{font-size:18px;line-height:1.7;color:var(--muted);max-width:38em}
.prose{max-width:42em;line-height:1.75}
.prose p{margin-bottom:18px}
.prose p:last-child{margin-bottom:0}
.prose h2,.prose h3{margin:34px 0 14px}
.prose ul,.prose ol{margin:0 0 18px;padding-left:1.25em;list-style:disc}
.prose li{margin-bottom:8px}

/* ---------- 容器与区块 ---------- */
.shell{width:min(var(--shell),100%);margin:0 auto;padding:0 24px}
.shell--narrow{width:min(880px,100%)}
.section{padding:72px 0;border-top:1px solid var(--line-soft)}
.section:first-of-type{border-top:0}
.section-head{display:flex;flex-direction:column;gap:12px;margin-bottom:40px;max-width:960px}
.stack{display:flex;flex-direction:column;gap:18px}
.rule{height:1px;background:var(--line-soft);border:0}

/* ---------- 栅格 ---------- */
.grid{display:grid;gap: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--asym{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
.grid--split{grid-template-columns:minmax(0,260px) minmax(0,1fr);gap:40px}
@media (max-width:1100px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--asym{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:760px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .grid--split{grid-template-columns:minmax(0,1fr);gap:24px}
}

/* ---------- 面板 ---------- */
.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:28px;
}
.panel--glass{
  background:var(--glass);
  border-color:rgba(53,224,212,.22);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.panel--plain{background:transparent;border:0;padding:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border:1px solid transparent;border-radius:var(--radius);
  font-size:15px;font-weight:600;letter-spacing:.08em;line-height:1.2;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease);
}
.btn--signal{background:var(--signal);color:#180802}
.btn--signal:hover{background:var(--signal-soft);transform:translateY(-2px)}
.btn--ghost{background:var(--glass);border-color:var(--line);color:var(--white)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);transform:translateY(-2px)}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin:26px 0 4px}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:13px;color:var(--muted);letter-spacing:.02em}
.breadcrumb-item{display:flex;align-items:center;gap:8px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--line)}
.breadcrumb-link:hover{color:var(--cyan)}
.breadcrumb-current{color:var(--white)}

/* ---------- 编号卡牌（专题研究板） ---------- */
.num-card{
  position:relative;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:24px;
  transition:transform .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.num-card:hover{transform:translateY(-2px);border-color:var(--signal);background:var(--panel-2)}
.num-card__index{display:block;font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--crimson)}
.num-card__title{margin-top:10px;font-family:var(--font-display);font-weight:700;font-size:20px;
  letter-spacing:.05em;line-height:1.3;color:var(--white)}
.num-card__body{margin-top:10px;font-size:15px;color:var(--muted)}
.num-card__meta{margin-top:16px;font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--gold)}

/* ---------- 纵向时间轴 ---------- */
.timeline{position:relative;margin-left:6px;padding-left:28px;border-left:1px solid var(--line)}
.timeline__item{position:relative;padding-bottom:32px}
.timeline__item:last-child{padding-bottom:0}
.timeline__node{position:absolute;left:-34px;top:8px;width:11px;height:11px;border-radius:50%;
  background:var(--gold);box-shadow:0 0 0 4px rgba(232,184,75,.14)}
.timeline__label{font-family:var(--font-mono);font-size:13px;letter-spacing:.06em;color:var(--muted)}

/* ---------- 筛选标签 ---------- */
.tag-group{display:flex;flex-wrap:wrap;gap:8px}
.tag{
  padding:7px 14px;border:1px solid var(--line);border-radius:999px;
  font-size:13px;letter-spacing:.04em;color:var(--muted);background:transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.tag:hover{border-color:var(--cyan);color:var(--white)}
.tag[aria-pressed="true"]{background:var(--cyan);border-color:var(--cyan);color:var(--cyan-ink);font-weight:600}

/* ---------- 图片容器基类（无外部资源） ---------- */
.media{
  position:relative;display:block;overflow:hidden;width:100%;
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(160deg,var(--panel) 0%,#0F1540 100%);
}
.media--wide{aspect-ratio:16/9}
.media--grid{aspect-ratio:4/3}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media__img{width:100%;height:100%;object-fit:cover;filter:saturate(.82) contrast(1.02) brightness(.94)}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    repeating-linear-gradient(0deg, rgba(233,238,249,.05) 0 1px, transparent 1px 3px),
    radial-gradient(120% 90% at 50% 0%, transparent 55%, rgba(11,16,48,.55) 100%);
}
.media__caption{
  position:absolute;left:0;right:0;bottom:0;z-index:1;
  padding:14px 16px;font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;
  color:var(--muted);background:linear-gradient(0deg, rgba(11,16,48,.9), transparent);
}
.media-grid{display:grid;gap:16px;grid-template-columns:repeat(3,minmax(0,1fr))}
@media (max-width:760px){ .media-grid{grid-template-columns:minmax(0,1fr)} }

/* =========================================================
   头部：双层信息导航
   ========================================================= */
.site-header{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg, rgba(11,16,48,.96) 0%, rgba(11,16,48,.84) 100%);
  -webkit-backdrop-filter:blur(14px) saturate(140%);
  backdrop-filter:blur(14px) saturate(140%);
  border-bottom:1px solid var(--line);
}
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:90;
  padding:12px 20px;border-radius:var(--radius);
  background:var(--signal);color:#180802;font-weight:700;letter-spacing:.06em;
  transition:top .18s var(--ease);
}
.skip-link:focus{top:12px}
.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;z-index:2;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--cyan),var(--signal));
}
.header-shell{width:min(var(--shell),100%);margin:0 auto;padding:0 24px}
.header-top{display:flex;align-items:center;gap:24px;min-height:64px;padding:10px 0}

/* 品牌块 */
.brand-link{display:inline-flex;align-items:center;gap:12px;flex:0 1 auto;min-width:0}
.brand-mark{
  display:grid;place-items:center;width:38px;height:38px;flex:0 0 auto;
  border:1px solid var(--signal);border-radius:var(--radius);
  font-family:var(--font-mono);font-size:14px;letter-spacing:.06em;color:var(--signal);
  background:rgba(255,122,51,.08);
}
.brand-text{display:flex;flex-direction:column;min-width:0}
.brand-name{font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:.08em;
  line-height:1.2;color:var(--white);white-space:nowrap}
.brand-desc{font-family:var(--font-mono);font-size:12px;letter-spacing:.04em;color:var(--muted);
  white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.brand-link:hover .brand-name{color:var(--cyan)}

/* 上层：客服入口 */
.header-utility{display:flex;align-items:center;gap:22px;margin-left:auto}
.util-item{display:flex;flex-direction:column;gap:2px;padding:4px 0;border-bottom:1px solid transparent;
  transition:border-color .18s var(--ease)}
.util-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
.util-value{font-size:14px;color:var(--white);transition:color .18s var(--ease)}
.util-item:hover{border-bottom-color:var(--signal)}
.util-item:hover .util-value{color:var(--signal)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;align-items:center;gap:10px;margin-left:auto;
  padding:10px 14px;border:1px solid var(--line);border-radius:var(--radius);
  background:var(--glass);color:var(--white);font-size:14px;letter-spacing:.08em;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle-bars{position:relative;display:block;width:18px;height:10px;flex:0 0 auto}
.nav-toggle-bars::before,.nav-toggle-bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--cyan);
  transition:transform .18s var(--ease);
}
.nav-toggle-bars::before{top:0}
.nav-toggle-bars::after{bottom:0}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(4px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-4px) rotate(-45deg)}

/* 下层：栏目导航 */
.header-nav{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  border-top:1px solid var(--line-soft);
}
.nav-list{display:flex;align-items:stretch;flex-wrap:wrap}
.nav-item{display:flex}
.nav-link{
  display:inline-flex;align-items:baseline;gap:8px;
  padding:13px 16px;font-size:15px;letter-spacing:.06em;color:var(--muted);
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-index{font-size:11px;letter-spacing:.12em;color:var(--muted);opacity:.55}
.nav-link:hover{color:var(--white);background:var(--glass)}
.nav-link:hover .nav-index{color:var(--cyan);opacity:1}
.nav-link[aria-current="page"]{
  color:var(--white);background:var(--glass);border-bottom-color:var(--signal);font-weight:600;
}
.nav-link[aria-current="page"] .nav-index{color:var(--cyan);opacity:1}
.nav-note{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--muted);white-space:nowrap}

/* =========================================================
   页脚：索引带 + 四栏 + 版权行
   ========================================================= */
.site-footer{
  margin-top:88px;
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,var(--ink-900) 0%, var(--ink-950) 100%);
}
.footer-shell{width:min(var(--shell),100%);margin:0 auto;padding:0 24px}

.footer-index{
  display:flex;align-items:center;gap:20px;flex-wrap:wrap;
  padding:26px 0;border-bottom:1px solid var(--line-soft);
}
.index-tag{
  flex:0 0 auto;padding:6px 12px;border:1px solid rgba(232,184,75,.42);border-radius:var(--radius);
  font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
}
.footer-index-text{flex:1 1 320px;font-size:15px;color:var(--muted)}
.footer-index-cta{margin-left:auto;flex:0 0 auto}

.footer-grid{
  display:grid;gap:32px;padding:48px 0;
  grid-template-columns:repeat(4,minmax(0,1fr));
}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:16px;font-family:var(--font-mono);font-weight:500;font-size:12px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--gold);
}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-link{
  display:inline-block;font-size:15px;color:var(--muted);border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover{color:var(--cyan);border-bottom-color:rgba(53,224,212,.5)}

.footer-contact{display:flex;flex-direction:column;gap:14px}
.footer-contact-item{display:flex;flex-direction:column;gap:3px}
.footer-contact-label{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--muted)}
.footer-contact-value{font-size:15px;color:var(--white);word-break:break-word;
  transition:color .18s var(--ease)}
a.footer-contact-value:hover{color:var(--signal)}

.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  padding:20px 0 32px;border-top:1px dashed var(--line);
}
.footer-copy{font-size:13px;color:var(--muted);letter-spacing:.04em}
.footer-legal{font-size:12px;color:var(--muted);letter-spacing:.08em}

/* =========================================================
   显现与扫描线
   ========================================================= */
[data-reveal]{opacity:0;transform:translateY(10px);
  transition:opacity .32s var(--ease),transform .32s var(--ease)}
[data-reveal].is-revealed{opacity:1;transform:none}

[data-scan]{position:relative}
[data-scan]::after{
  content:"";position:absolute;left:0;right:0;bottom:-6px;height:1px;
  background:linear-gradient(90deg,transparent,var(--cyan),transparent);
  transform:scaleX(0);transform-origin:left center;opacity:0;
  transition:transform .16s linear,opacity .16s linear;
}
[data-scan].is-scanned::after{transform:scaleX(1);opacity:.9}

/* =========================================================
   响应式：平板 / 手机
   ========================================================= */
@media (max-width:1240px){
  .nav-note{display:none}
}
@media (max-width:960px){
  .header-utility{display:none}
  .nav-toggle{display:inline-flex}
  .header-nav{display:none;padding-bottom:8px}
  .site-header[data-open] .header-nav{
    display:block;
    max-height:calc(100vh - 100px);
    overflow-y:auto;
    -webkit-overflow-scrolling:touch;
  }
  .nav-list{flex-direction:column;align-items:stretch}
  .nav-item{display:block;border-bottom:1px solid var(--line-soft)}
  .nav-link{width:100%;padding:15px 4px;border-bottom:0;border-left:2px solid transparent}
  .nav-link[aria-current="page"]{
    background:var(--glass);border-bottom-color:transparent;border-left-color:var(--signal);
  }
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;padding:40px 0}
  .footer-index-cta{margin-left:0}
}
@media (max-width:640px){
  .shell,.header-shell,.footer-shell{padding:0 18px}
  .brand-desc{font-size:11px}
  .section{padding:56px 0}
  .panel{padding:22px}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start;gap:8px}
  .footer-index{padding:22px 0}
}

/* =========================================================
   可访问性：减少动态
   ========================================================= */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
  [data-scan]::after{transform:scaleX(1) !important;opacity:.5 !important}
  .scroll-progress{display:none}
  .btn:hover,.num-card:hover{transform:none}
}