/* ============================================================
   BSPORTS 主站 · 共享外壳样式 /assets/site.css
   深夜赛场转播间 × 技术蓝图网格 × 印刷叠层
   ============================================================ */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body,h1,h2,h3,h4,h5,p,ul,ol,dl,figure,blockquote,address{margin:0}
ul,ol{list-style:none;padding:0}
img,picture,svg,canvas{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input,select,textarea{font:inherit}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--neon);outline-offset:2px;border-radius:1px}

/* ---------- 2. 变量 ---------- */
:root{
  --ink:#0A0E12;         /* 赛场深黑 */
  --stand:#121A22;       /* 蓝黑看台 */
  --turf:#1E2A33;        /* 草皮暗绿灰 */
  --neon:#C9FF3D;        /* 荧光电光绿 */
  --beat:#FF3B3B;        /* 心跳红 */
  --data:#4FC3F7;        /* 冷蓝数据线 */
  --paper:#F3E9D2;       /* 奶油纸白 */
  --print:#2B1E16;       /* 印刷深棕黑 */
  --ember:#FF7A1A;       /* 复古红橙 */
  --mute:#9AA7B1;        /* 中性石墨灰 */
  --body-text:#C6D2DA;

  --line:rgba(79,195,247,.20);
  --line-soft:rgba(79,195,247,.10);
  --neon-soft:rgba(201,255,61,.12);
  --beat-soft:rgba(255,59,59,.14);

  --font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-display:"Noto Sans SC","Source Han Sans SC","PingFang SC",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --wrap:1280px;
  --gutter:clamp(16px,4vw,48px);
  --header-rule:rgba(79,195,247,.18);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  color:var(--body-text);
  background-color:var(--ink);
  background-image:
    linear-gradient(var(--line-soft) 1px,transparent 1px),
    linear-gradient(90deg,var(--line-soft) 1px,transparent 1px),
    radial-gradient(1200px 620px at 82% -12%,rgba(201,255,61,.07),transparent 70%),
    radial-gradient(900px 520px at -8% 100%,rgba(255,59,59,.07),transparent 70%);
  background-size:96px 96px,96px 96px,auto,auto;
  background-attachment:fixed,fixed,scroll,scroll;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{font-family:var(--font-display);color:var(--paper);font-weight:900;letter-spacing:-.02em;line-height:1.14}
h1{font-size:clamp(34px,5vw,64px)}
h2{font-size:clamp(24px,3vw,34px)}
h3{font-size:clamp(19px,2vw,24px)}
strong{color:var(--paper)}
.display{font-family:var(--font-display);font-weight:900;font-size:clamp(56px,11vw,160px);line-height:.92;letter-spacing:-.03em;color:var(--paper)}
.title-lg{font-size:clamp(32px,5vw,56px);font-weight:900;color:var(--paper);letter-spacing:-.02em}
.title-md{font-size:clamp(22px,2.6vw,32px);font-weight:900;color:var(--paper)}
.kicker{display:inline-flex;align-items:center;gap:10px;font-family:var(--font-mono);font-size:13px;letter-spacing:.18em;color:var(--ember);text-transform:uppercase}
.lede{font-size:clamp(17px,1.6vw,20px);line-height:1.7;color:var(--paper);max-width:60ch}
.num,.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.num{font-weight:700;color:var(--neon);letter-spacing:.02em}
.num--xl{display:block;font-size:clamp(40px,7vw,96px);line-height:.95;letter-spacing:-.02em;color:var(--neon)}

/* ---------- 4. 容器 / 网格 ---------- */
.wrap{width:min(100% - var(--gutter) * 2,var(--wrap));margin-inline:auto}
.section{padding-block:clamp(36px,6vw,84px)}
.section--tight{padding-block:clamp(24px,3.4vw,44px)}
.layout{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.4vw,32px)}
.col-3{grid-column:span 3}
.col-4{grid-column:span 4}
.col-5{grid-column:span 5}
.col-6{grid-column:span 6}
.col-7{grid-column:span 7}
.col-8{grid-column:span 8}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

/* ---------- 5. 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  padding:11px 18px;font-size:15px;font-weight:700;letter-spacing:.02em;
  color:var(--paper);background:var(--turf);border:1px solid var(--line);
  transition:color .18s ease,background-color .18s ease,border-color .18s ease,transform .18s ease;
}
.btn:hover{color:var(--neon);border-color:var(--neon);background:rgba(201,255,61,.08)}
.btn--neon{background:var(--neon);color:var(--print);border-color:var(--neon);box-shadow:4px 4px 0 rgba(43,30,22,.9)}
.btn--neon:hover{background:#D8FF66;color:var(--print);border-color:#D8FF66;transform:translate(-1px,-1px)}
.btn--beat{background:transparent;color:var(--beat);border-color:var(--beat)}
.btn--beat:hover{background:var(--beat-soft);color:var(--beat);border-color:var(--beat)}
.btn--ghost{background:transparent}
.btn--ghost:hover{background:var(--neon-soft)}

.tag-paper{display:inline-block;padding:4px 10px;background:var(--paper);color:var(--print);font-size:12px;font-weight:800;letter-spacing:.08em;box-shadow:3px 3px 0 rgba(43,30,22,.9)}
.card{position:relative;padding:clamp(16px,2vw,26px);background:var(--turf);border:1px solid var(--line)}
.card--paper{background:var(--paper);color:var(--print);border-color:var(--print);box-shadow:6px 6px 0 rgba(43,30,22,.85)}
.card--paper h2,.card--paper h3,.card--paper strong{color:var(--print)}
.card__no{display:block;font-family:var(--font-mono);font-size:13px;letter-spacing:.14em;color:var(--ember);margin-bottom:8px}

.chapter{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;padding-bottom:12px;margin-bottom:clamp(20px,3vw,32px);border-bottom:1px solid var(--line)}
.chapter__no{font-family:var(--font-mono);font-weight:700;font-size:14px;color:var(--ember);letter-spacing:.1em}
.chapter__title{font-size:clamp(22px,3vw,34px);font-weight:900;color:var(--paper);letter-spacing:-.02em}
.chapter__meta{margin-left:auto;font-family:var(--font-mono);font-size:13px;color:var(--mute)}

.crumbs{padding-block:14px;font-family:var(--font-mono);font-size:13px;color:var(--mute)}
.crumbs ol{display:flex;flex-wrap:wrap;gap:8px}
.crumbs li{display:flex;align-items:center;gap:8px}
.crumbs li+li::before{content:"/";color:var(--data)}
.crumbs a:hover{color:var(--neon)}

.prose{max-width:72ch;font-size:17px;line-height:1.75}
.prose p{margin-block:1.2em 0}
.prose h2{margin-block:2em .6em;font-size:clamp(24px,3vw,32px)}
.prose h3{margin-block:1.6em .5em}
.prose ul{list-style:disc;padding-left:1.4em;margin-block:1.2em 0}
.prose ol{list-style:decimal;padding-left:1.4em;margin-block:1.2em 0}
.prose li{margin-block:.4em}
.prose a{color:var(--data);text-decoration:underline;text-underline-offset:3px}
.prose a:hover{color:var(--neon)}
.prose blockquote{margin-block:1.6em;padding:14px 18px;background:var(--paper);color:var(--print);box-shadow:6px 6px 0 rgba(43,30,22,.85)}

.stat{display:flex;flex-direction:column;gap:4px;padding:14px 16px;background:var(--stand);border:1px solid var(--line);border-left:3px solid var(--neon)}
.stat__key{font-size:13px;color:var(--mute);letter-spacing:.06em}
.stat__val{font-family:var(--font-mono);font-weight:700;font-size:clamp(20px,2.4vw,28px);color:var(--neon)}

.beat-line{position:relative;height:2px;margin-block:clamp(28px,4vw,52px);background:linear-gradient(90deg,transparent,var(--data) 14%,rgba(79,195,247,.22) 50%,var(--beat) 86%,transparent)}
.beat-line::after{
  content:"";position:absolute;left:50%;top:-7px;width:74px;height:16px;transform:translateX(-50%);
  background:var(--beat);
  clip-path:polygon(0 55%,22% 55%,30% 4%,44% 100%,54% 30%,64% 55%,100% 55%,100% 63%,62% 63%,54% 44%,44% 100%,30% 24%,26% 63%,0 63%);
}

/* ---------- 6. 图片容器（页面阶段放置图片/SVG 占位） ---------- */
.media{position:relative;overflow:hidden;background:linear-gradient(140deg,var(--stand),var(--turf));border:1px solid var(--line)}
.media>img,.media>picture>img,.media>svg{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--3x4{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--tall{aspect-ratio:2/3}
.media--paper{border:6px solid var(--paper);box-shadow:8px 8px 0 rgba(43,30,22,.85)}
.media__scan{position:absolute;inset:0;pointer-events:none;opacity:.45;background:repeating-linear-gradient(0deg,rgba(79,195,247,.18) 0 1px,transparent 1px 5px)}
.figure{margin:0}
.figure__caption{margin-top:10px;font-size:14px;line-height:1.6;color:var(--mute)}

/* ---------- 7. 页头 ---------- */
.site-header{position:sticky;top:0;z-index:90;background:rgba(10,14,18,.94);border-bottom:1px solid var(--header-rule);backdrop-filter:blur(10px)}
.skip-link{
  position:fixed;top:0;left:0;z-index:200;padding:10px 18px;
  background:var(--neon);color:var(--print);font-weight:800;font-size:15px;
  transform:translateY(-140%);transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0)}

.statusbar{background:var(--stand);border-bottom:1px solid var(--line-soft)}
.statusbar__inner{display:flex;align-items:center;height:38px;font-size:13px;color:var(--mute)}
.statusbar__cell{display:flex;align-items:center;gap:9px;padding-inline:16px;border-right:1px solid var(--line-soft);min-width:0}
.statusbar__cell:first-child{padding-left:0}
.statusbar__key{color:var(--mute);letter-spacing:.04em}
.statusbar__val{font-family:var(--font-mono);font-weight:700;color:var(--neon)}
.statusbar__cell--ticker{flex:1 1 auto;border-right:0;padding-right:0;overflow:hidden}

.pulse{display:inline-flex;align-items:flex-end;gap:3px;height:14px}
.pulse i{display:block;width:3px;height:6px;background:var(--beat);border-radius:1px;transform-origin:bottom;animation:beat 1.2s ease-in-out infinite}
.pulse i:nth-child(2){height:14px;animation-delay:.12s}
.pulse i:nth-child(3){height:9px;animation-delay:.24s}
.pulse i:nth-child(4){height:5px;animation-delay:.36s}
@keyframes beat{
  0%,100%{transform:scaleY(.55);opacity:.6}
  18%{transform:scaleY(1.35);opacity:1}
  40%{transform:scaleY(.7);opacity:.75}
  58%{transform:scaleY(1.15);opacity:.95}
}

.countdown{display:inline-flex;align-items:center;gap:2px;font-family:var(--font-mono);font-weight:700;font-size:13px;color:var(--neon);letter-spacing:.04em}
.countdown__unit{display:inline-block;min-width:2.4ch;text-align:center;padding:2px 4px;background:var(--neon-soft);border:1px solid rgba(201,255,61,.4)}
.countdown__sep{color:rgba(201,255,61,.5)}
.countdown__unit--sec.is-tick{animation:tick .36s ease-out}
@keyframes tick{from{transform:translateY(-3px);opacity:.5}to{transform:none;opacity:1}}

.ticker{overflow:hidden;-webkit-mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent);mask-image:linear-gradient(90deg,transparent,#000 5%,#000 95%,transparent)}
.ticker__track{display:flex;align-items:center;gap:28px;white-space:nowrap;width:max-content;animation:ticker 42s linear infinite}
.ticker:hover .ticker__track,.ticker:focus-within .ticker__track{animation-play-state:paused}
@keyframes ticker{from{transform:translateX(0)}to{transform:translateX(-50%)}}
.ticker__item{display:inline-flex;align-items:center;gap:8px}
.ticker__item::before{content:"";width:6px;height:6px;background:var(--ember);flex:0 0 auto}
.ticker__pair{color:var(--paper);font-size:13px}
.ticker__time{font-family:var(--font-mono);font-size:12px;color:var(--data)}

.masthead{padding-block:9px}
.masthead__inner{display:flex;align-items:center;justify-content:space-between;gap:clamp(16px,3vw,40px)}

.brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  display:grid;place-items:center;width:42px;height:42px;flex:0 0 auto;
  background:var(--ink);border:2px solid var(--neon);color:var(--neon);
  font-family:var(--font-mono);font-weight:700;font-size:16px;letter-spacing:.02em;
  box-shadow:3px 3px 0 rgba(79,195,247,.35);
}
.brand__mark--paper{background:var(--paper);color:var(--print);border-color:var(--print);box-shadow:4px 4px 0 rgba(43,30,22,.85)}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:17px;color:var(--paper);letter-spacing:-.01em}
.brand__tag{font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--neon)}
.brand:hover .brand__tag{color:var(--data)}

.nav{display:flex;align-items:center;gap:clamp(6px,1.4vw,18px)}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__link{
  display:inline-block;padding:9px 11px;font-size:15px;font-weight:700;color:var(--body-text);
  border-bottom:2px solid transparent;transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.nav__link:hover{color:var(--neon);background:var(--neon-soft)}
.nav__link[aria-current="page"]{color:var(--neon);border-bottom-color:var(--neon);background:var(--neon-soft)}
.nav__cta{
  display:inline-flex;align-items:center;padding:10px 16px;font-size:14px;font-weight:800;
  background:var(--neon);color:var(--print);box-shadow:3px 3px 0 rgba(43,30,22,.9);
  transition:transform .18s ease,background-color .18s ease;
}
.nav__cta:hover{transform:translate(-1px,-1px);background:#D8FF66}

.nav-toggle{display:none;align-items:center;gap:9px;padding:9px 12px;border:1px solid var(--line);color:var(--paper);font-weight:700;font-size:14px}
.nav-toggle:hover{border-color:var(--neon);color:var(--neon)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:18px}
.nav-toggle__bars i{display:block;height:2px;background:currentColor;transition:transform .2s ease,opacity .2s 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)}

.scroll-progress{position:absolute;left:0;bottom:0;height:3px;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--neon),var(--data) 48%,var(--beat));transition:transform .1s linear}

/* ---------- 8. 页脚：印刷叠层 ---------- */
.site-footer{position:relative;margin-top:clamp(40px,7vw,96px);background:var(--stand);border-top:1px solid var(--line)}
.site-footer::before{content:"";position:absolute;inset:0 0 auto;height:6px;background:repeating-linear-gradient(90deg,var(--ember) 0 18px,var(--print) 18px 36px,var(--data) 36px 54px,var(--print) 54px 72px);opacity:.5}
.footer__layer--one{display:grid;grid-template-columns:1.3fr repeat(3,minmax(0,1fr));gap:clamp(20px,3vw,40px);padding-block:clamp(34px,4.4vw,58px);border-bottom:1px solid var(--line-soft)}
.footer__brand{display:flex;flex-direction:column;align-items:flex-start;gap:10px}
.footer__brand-name{font-family:var(--font-display);font-weight:900;font-size:18px;color:var(--paper)}
.footer__brand-tag{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--data)}
.footer__title{margin-bottom:12px;font-size:13px;font-family:var(--font-mono);font-weight:700;letter-spacing:.16em;color:var(--paper);text-transform:uppercase}
.footer__links{display:flex;flex-direction:column;gap:9px}
.footer__links a{font-size:15px;color:var(--body-text);border-bottom:1px solid transparent;transition:color .18s ease,border-color .18s ease}
.footer__links a:hover{color:var(--neon);border-bottom-color:var(--neon)}
.footer__layer--two{display:flex;flex-wrap:wrap;gap:16px clamp(20px,4vw,48px);align-items:flex-start;justify-content:space-between;padding-block:24px;border-bottom:1px solid var(--line-soft)}
.footer__contact{display:flex;flex-wrap:wrap;gap:10px clamp(18px,3vw,36px);font-style:normal}
.footer__contact-item{display:flex;flex-direction:column;gap:2px}
.footer__key{font-size:12px;letter-spacing:.1em;color:var(--mute)}
.footer__val{font-family:var(--font-mono);font-size:14px;color:var(--paper);word-break:break-all}
.footer__note{max-width:46ch;font-size:13.5px;color:var(--mute)}
.footer__layer--three{display:flex;flex-wrap:wrap;align-items:center;gap:12px 26px;padding-block:18px 30px;font-family:var(--font-mono);font-size:12.5px;color:var(--mute)}
.footer__icp{display:inline-block;padding:4px 10px;background:var(--paper);color:var(--print);font-weight:700;box-shadow:3px 3px 0 rgba(43,30,22,.9);transform:rotate(-1.2deg)}
.footer__region{color:var(--paper)}
.footer__updated{flex:1 1 260px}

/* ---------- 9. 显现动效 ---------- */
[data-reveal]{transition:opacity .5s ease,transform .5s ease;transition-delay:var(--reveal-delay,0s)}
[data-reveal].is-out{opacity:0;transform:translateY(16px)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1080px){
  .nav__link{padding:9px 8px;font-size:14px}
}
@media (max-width:980px){
  .layout{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-3,.col-4{grid-column:span 3}
  .col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 6}

  .nav-toggle{display:inline-flex}
  .nav{
    position:absolute;top:100%;left:0;right:0;z-index:95;
    flex-direction:column;align-items:stretch;gap:0;
    max-height:0;overflow:hidden;visibility:hidden;opacity:0;
    background:var(--stand);border-bottom:1px solid var(--line);
    box-shadow:0 18px 40px rgba(0,0,0,.55);
    transition:max-height .3s ease,opacity .22s ease,visibility .3s;
  }
  .nav[data-open]{max-height:min(76vh,620px);overflow-y:auto;visibility:visible;opacity:1}
  .nav__list{flex-direction:column;align-items:stretch;gap:0;padding:8px var(--gutter)}
  .nav__item+.nav__item{border-top:1px solid var(--line-soft)}
  .nav__link{display:block;padding:15px 2px;font-size:16px;border-bottom:0;border-left:3px solid transparent}
  .nav__link[aria-current="page"]{border-left-color:var(--neon);padding-left:12px}
  .nav__cta{margin:14px var(--gutter) 20px;justify-content:center}

  .footer__layer--one{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:760px){
  .statusbar__inner{overflow-x:auto;height:auto;padding-block:0;scrollbar-width:none}
  .statusbar__inner::-webkit-scrollbar{display:none}
  .statusbar__cell{height:38px;flex:0 0 auto}
  .statusbar__cell--state{position:sticky;left:0;background:var(--stand);z-index:2;padding-left:0}
  .statusbar__cell--ticker{flex:0 0 62vw}
  .brand__tag{display:none}
  .display{letter-spacing:-.02em}
}
@media (max-width:640px){
  .layout{grid-template-columns:repeat(2,minmax(0,1fr))}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9,.col-12{grid-column:span 2}
  .media--3x4,.media--tall{aspect-ratio:4/5}
  .footer__layer--one{grid-template-columns:1fr;gap:26px}
  .chapter__meta{margin-left:0;width:100%}
}

/* ---------- 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}
  .pulse i{transform:none}
  .ticker__track{animation:none;transform:none;flex-wrap:wrap;white-space:normal;width:auto}
  .ticker__item[aria-hidden="true"]{display:none}
  .ticker{-webkit-mask-image:none;mask-image:none}
  [data-reveal]{opacity:1 !important;transform:none !important}
  .scroll-progress{transition:none}
}