/* ===== 天博赛场 · 共享样式 /assets/site.css ===== */

:root{
  --ink-night:#070B1A;
  --stand-blue:#0E1630;
  --track-blue:#16234A;
  --paper:#F2E8D5;
  --ink-black:#12141C;
  --cyan:#22E0D6;
  --hot:#FF5A1F;
  --deep-teal:#0B7A72;
  --silver:#C7CEDA;
  --mist:#8A99B5;
  --paper-gray:#4A4F5C;
  --text-hi:#E6EBF5;

  --font-num:"Barlow Condensed","Roboto Condensed","Oswald",system-ui,sans-serif;
  --font-h:"Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;
  --font-body:system-ui,"PingFang SC","Microsoft YaHei",sans-serif;

  --shell-w:1280px;
  --shell-pad:clamp(16px,4vw,40px);
  --bar-h:70px;
  --hair:rgba(199,206,218,.18);
  --hair-strong:rgba(199,206,218,.34);
  --ease:cubic-bezier(.2,.7,.2,1);
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--ink-night);
  color:var(--text-hi);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(720px 420px at 8% -6%, rgba(34,224,214,.16), transparent 68%),
    radial-gradient(620px 380px at 96% 12%, rgba(255,90,31,.12), transparent 70%),
    radial-gradient(900px 600px at 50% 120%, rgba(22,35,74,.9), transparent 72%);
}
body::after{
  content:"";position:fixed;inset:-10% -20%;z-index:0;pointer-events:none;opacity:.05;
  background:repeating-linear-gradient(112deg, var(--silver) 0 1px, transparent 1px 34px);
}
img{max-width:100%;display:block;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul,ol{padding:0;list-style:none;}
a{color:var(--cyan);}
button{font:inherit;color:inherit;}
[hidden]{display:none !important;}

.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;
}
.skip-link{
  position:absolute;left:12px;top:-64px;z-index:120;
  padding:10px 16px;background:var(--cyan);color:var(--ink-night);
  font-family:var(--font-h);font-weight:700;font-size:14px;text-decoration:none;
  border-radius:2px;transition:top .2s var(--ease);
}
.skip-link:focus{top:12px;}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:1px;}

/* ===== 容器与分区 ===== */
.shell{
  position:relative;z-index:1;width:100%;max-width:var(--shell-w);
  margin-inline:auto;padding-inline:var(--shell-pad);
}
.section{position:relative;z-index:1;padding-block:clamp(40px,6vw,84px);}
.section--paper{
  background:var(--paper);color:var(--ink-black);
  padding-inline:0;
}
.section--paper .shell{color:var(--ink-black);}
.section--slant::before{
  content:"";position:absolute;inset:0;z-index:-1;background:var(--stand-blue);
  clip-path:polygon(0 34px,100% 0,100% 100%,0 100%);
}
.section__head{
  display:flex;flex-wrap:wrap;align-items:baseline;gap:12px 18px;
  margin-bottom:clamp(18px,2.6vw,32px);
  border-bottom:1px solid var(--hair);
  padding-bottom:14px;
}
.h-sec{
  font-family:var(--font-h);font-weight:700;letter-spacing:-.01em;
  font-size:clamp(22px,2.4vw,32px);line-height:1.2;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-serif);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--hot);display:block;}

/* ===== 顶部命令栏 ===== */
.command-bar{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg, rgba(7,11,26,.97), rgba(14,22,48,.93));
  border-bottom:1px solid var(--hair);
  backdrop-filter:blur(10px);
  transition:background .3s var(--ease), box-shadow .3s var(--ease);
}
.command-bar[data-scrolled]{
  background:rgba(7,11,26,.985);
  box-shadow:0 14px 34px rgba(0,0,0,.5);
}
.command-bar__progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:linear-gradient(90deg,var(--cyan),var(--hot));
  transform:scaleX(0);transform-origin:0 50%;
}
.command-bar__inner{
  position:relative;display:flex;align-items:center;gap:clamp(10px,2vw,26px);
  min-height:var(--bar-h);padding-block:10px;
  transition:min-height .3s var(--ease), padding .3s var(--ease);
}
.command-bar[data-scrolled] .command-bar__inner{min-height:58px;padding-block:6px;}

.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;color:inherit;}
.brand__mark{
  display:flex;align-items:flex-end;gap:3px;height:22px;
  transform:skewX(-8deg);
}
.brand__mark i{display:block;width:5px;background:var(--cyan);}
.brand__mark i:nth-child(1){height:100%;}
.brand__mark i:nth-child(2){height:68%;background:var(--silver);}
.brand__mark i:nth-child(3){height:42%;background:var(--hot);}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{
  font-family:var(--font-h);font-weight:700;font-size:18px;letter-spacing:-.01em;
  color:#fff;
}
.brand__tag{
  font-size:11.5px;letter-spacing:.08em;color:var(--mist);white-space:nowrap;
}
.command-bar[data-scrolled] .brand__tag{display:none;}

.mainnav{margin-inline:auto;}
.mainnav__list{display:flex;align-items:center;gap:2px;counter-reset:nav;}
.mainnav__link{
  position:relative;display:flex;align-items:center;gap:7px;
  padding:9px 11px;border-radius:2px;text-decoration:none;
  font-family:var(--font-h);font-weight:500;font-size:14.5px;letter-spacing:.03em;
  color:var(--silver);white-space:nowrap;
  transition:color .22s var(--ease), background .22s var(--ease);
}
.mainnav__link::before{
  counter-increment:nav;content:"0" counter(nav);
  font-family:var(--font-num);font-size:11px;letter-spacing:.06em;
  color:rgba(138,153,181,.75);
}
.mainnav__link:hover{color:#fff;background:rgba(34,224,214,.09);}
.mainnav__link:hover::before{color:var(--cyan);}
.mainnav__link[aria-current="page"]{
  color:var(--cyan);
  background:linear-gradient(180deg, rgba(34,224,214,.16), rgba(34,224,214,.03));
  box-shadow:inset 0 -2px 0 var(--cyan);
}
.mainnav__link[aria-current="page"]::after{
  content:"";position:absolute;right:6px;top:8px;width:5px;height:5px;
  background:var(--hot);border-radius:50%;
}

.command-bar__status{
  display:flex;align-items:center;gap:9px;flex:0 0 auto;
  padding-left:16px;border-left:1px solid var(--hair);
  font-size:12.5px;letter-spacing:.06em;color:var(--mist);white-space:nowrap;
}
.status-dot{
  width:8px;height:8px;border-radius:50%;background:var(--cyan);flex:0 0 auto;
  animation:pulse 2.4s var(--ease) infinite;
}
@keyframes pulse{
  0%{box-shadow:0 0 0 0 rgba(34,224,214,.55);}
  70%{box-shadow:0 0 0 9px rgba(34,224,214,0);}
  100%{box-shadow:0 0 0 0 rgba(34,224,214,0);}
}
.command-bar__actions{display:flex;align-items:center;gap:8px;flex:0 0 auto;}

.nav-toggle{
  display:none;align-items:center;gap:9px;min-height:44px;padding:8px 13px;
  background:rgba(22,35,74,.75);border:1px solid var(--hair-strong);
  color:var(--silver);border-radius:2px;cursor:pointer;
  font-family:var(--font-h);font-size:13px;letter-spacing:.1em;
  transition:color .22s var(--ease), border-color .22s var(--ease);
}
.nav-toggle__bars{display:block;width:18px;height:2px;background:currentColor;
  box-shadow:0 -6px 0 currentColor, 0 6px 0 currentColor;}
.nav-toggle[aria-expanded="true"]{color:var(--cyan);border-color:var(--cyan);}

/* ===== 按钮 ===== */
.btn{
  --btn-bg:transparent;--btn-fg:var(--cyan);--btn-bd:rgba(34,224,214,.45);
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;padding:10px 18px;border-radius:2px;
  background:var(--btn-bg);color:var(--btn-fg);border:1px solid var(--btn-bd);
  font-family:var(--font-h);font-weight:700;font-size:14px;letter-spacing:.06em;
  text-decoration:none;cursor:pointer;
  transition:transform .22s var(--ease), box-shadow .22s var(--ease),
             background .22s var(--ease), color .22s var(--ease);
}
.btn:hover{transform:translateY(-1px);}
.btn--hot{
  --btn-bg:var(--hot);--btn-fg:#070B1A;--btn-bd:var(--hot);
  clip-path:polygon(9px 0,100% 0,100% 100%,0 100%);
  padding-inline:22px 18px;
}
.btn--hot:hover{box-shadow:0 10px 26px rgba(255,90,31,.35);}
.btn--ghost{--btn-bg:rgba(34,224,214,.06);}
.btn--ghost:hover{--btn-bg:rgba(34,224,214,.16);box-shadow:0 8px 22px rgba(34,224,214,.18);}
.btn--paper{--btn-bg:var(--paper);--btn-fg:var(--ink-black);--btn-bd:var(--paper);}
.btn--paper:hover{box-shadow:0 10px 22px rgba(18,20,28,.35);}

/* ===== 面包屑 ===== */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:0 8px;
  margin-bottom:18px;font-size:13px;color:var(--mist);
}
.crumbs li{display:flex;align-items:center;}
.crumbs li + li::before{content:"/";margin-right:8px;color:rgba(138,153,181,.6);}
.crumbs a{color:var(--silver);text-decoration:none;}
.crumbs a:hover{color:var(--cyan);}

/* ===== 目录索引 ===== */
.index-rail{
  position:relative;display:grid;gap:2px;align-content:start;
  border-left:1px solid var(--hair);counter-reset:rail;
}
.index-rail__head{
  font-family:var(--font-serif);font-size:12px;letter-spacing:.16em;
  color:var(--mist);padding:0 0 10px 16px;
}
.index-rail__link{
  position:relative;display:flex;align-items:baseline;gap:10px;
  padding:9px 12px 9px 16px;border-left:2px solid transparent;
  font-size:14px;color:var(--silver);text-decoration:none;
  transition:color .22s var(--ease), background .22s var(--ease), border-color .22s var(--ease);
}
.index-rail__link::before{
  counter-increment:rail;content:counter(rail,decimal-leading-zero);
  font-family:var(--font-num);font-size:12px;letter-spacing:.06em;
  color:rgba(138,153,181,.7);
}
.index-rail__link:hover{color:#fff;background:rgba(34,224,214,.07);}
.index-rail__link[aria-current="true"]{
  color:var(--cyan);border-left-color:var(--cyan);
  background:linear-gradient(90deg, rgba(34,224,214,.14), transparent);
}
.index-rail__link[aria-current="true"]::before{color:var(--hot);}

/* ===== 网格与卡片 ===== */
.grid{display:grid;gap:clamp(14px,2vw,22px);}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
.card{
  display:flex;flex-direction:column;gap:10px;
  padding:clamp(16px,2vw,24px);
  background:var(--track-blue);
  border-top:2px solid rgba(34,224,214,.4);
}
.card__title{
  font-family:var(--font-h);font-weight:700;font-size:18px;line-height:1.35;
  letter-spacing:-.01em;
}
.card__meta{
  font-family:var(--font-num);font-size:12px;letter-spacing:.08em;
  color:var(--mist);text-transform:uppercase;
}
.card--paper{background:var(--paper);color:var(--ink-black);border-top-color:var(--hot);}
.card--paper .card__meta{color:var(--paper-gray);}

/* ===== 暖纸断面 ===== */
.piece{
  position:relative;background:var(--paper);color:var(--ink-black);
  padding:clamp(20px,3.2vw,44px);
  box-shadow:10px 10px 0 rgba(34,224,214,.14), 0 22px 48px rgba(0,0,0,.4);
}
.piece p{color:var(--paper-gray);}
.piece a{color:var(--deep-teal);}
.piece__label{
  display:inline-block;margin-bottom:14px;padding:3px 10px;
  font-family:var(--font-serif);font-size:12px;letter-spacing:.16em;
  border:1px solid var(--ink-black);color:var(--ink-black);
}

/* ===== 标签与状态 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:3px 9px;border-radius:1px;
  font-size:12px;letter-spacing:.1em;color:var(--silver);
  border:1px solid var(--hair-strong);background:rgba(255,255,255,.03);
}
.tag--cyan{background:var(--cyan);border-color:var(--cyan);color:var(--ink-night);font-weight:700;}
.tag--hot{background:var(--hot);border-color:var(--hot);color:var(--ink-night);font-weight:700;}

/* ===== 比分 / 数字锚点 ===== */
.scoreline{display:flex;align-items:baseline;gap:clamp(10px,2vw,22px);flex-wrap:wrap;}
.scoreline__num{
  font-family:var(--font-num);font-weight:800;font-variant-numeric:tabular-nums;
  font-size:clamp(56px,10vw,140px);line-height:.86;letter-spacing:-.03em;
  color:var(--hot);
}
.scoreline__label{
  font-family:var(--font-h);font-size:13px;letter-spacing:.14em;
  color:var(--mist);text-transform:uppercase;
}

/* ===== 响应式图文容器 ===== */
.frame{
  position:relative;display:block;overflow:hidden;width:100%;
  aspect-ratio:16/9;border:1px solid var(--hair-strong);
  background:
    repeating-linear-gradient(114deg, rgba(34,224,214,.10) 0 2px, transparent 2px 28px),
    linear-gradient(160deg, var(--track-blue), var(--ink-night));
}
.frame img{width:100%;height:100%;object-fit:cover;}
.frame--wide{aspect-ratio:21/9;}
.frame--tall{aspect-ratio:4/5;}
.frame--square{aspect-ratio:1/1;}
.frame__caption{
  display:block;margin-top:8px;font-size:12.5px;line-height:1.6;color:var(--mist);
}
.piece .frame__caption{color:var(--paper-gray);}

/* ===== 页脚 ===== */
.site-footer{
  position:relative;margin-top:clamp(48px,8vw,96px);
  background:var(--stand-blue);
  border-top:1px solid var(--hair);
  color:var(--silver);
}
.site-footer::before{
  content:"";position:absolute;inset:0 0 auto;height:3px;
  background:linear-gradient(90deg,var(--cyan),rgba(34,224,214,0) 48%,var(--hot));
}
.site-footer__top{
  display:grid;gap:clamp(24px,4vw,52px);
  grid-template-columns:minmax(200px,1fr) 2.6fr;
  padding-block:clamp(32px,5vw,58px);
}
.site-footer__brand{display:flex;flex-direction:column;gap:8px;}
.site-footer__brand .brand__mark{height:26px;margin-bottom:6px;}
.site-footer__name{
  font-family:var(--font-h);font-weight:700;font-size:20px;color:#fff;line-height:1.2;
}
.site-footer__domain{
  font-family:var(--font-num);font-size:15px;letter-spacing:.1em;color:var(--cyan);
}
.site-footer__tag{font-size:13px;color:var(--mist);letter-spacing:.05em;}
.site-footer__cols{
  display:grid;gap:clamp(20px,3vw,36px);
  grid-template-columns:repeat(3,minmax(0,1fr));
}
.foot-col{display:flex;flex-direction:column;gap:10px;}
.foot-col__title{
  position:relative;padding-top:12px;
  font-family:var(--font-h);font-weight:700;font-size:13px;letter-spacing:.16em;
  color:var(--cyan);
}
.foot-col__title::before{
  content:"";position:absolute;top:0;left:0;width:20px;height:2px;background:var(--hot);
}
.foot-col__list{display:flex;flex-direction:column;gap:7px;}
.foot-col__link{
  display:inline-flex;align-items:center;gap:8px;
  font-size:14.5px;color:var(--silver);text-decoration:none;
  transition:color .22s var(--ease);
}
.foot-col__link::before{
  content:"";width:6px;height:1px;background:rgba(199,206,218,.4);display:block;
}
.foot-col__link:hover{color:var(--cyan);}
.foot-col__link:hover::before{background:var(--cyan);}
.foot-col__link[aria-current="page"]{color:var(--cyan);}
.foot-line{
  font-size:13.5px;line-height:1.7;color:var(--mist);
  overflow-wrap:anywhere;
}
.copy-btn{
  align-self:flex-start;display:inline-flex;align-items:center;gap:6px;
  min-height:32px;padding:4px 11px;border-radius:2px;cursor:pointer;
  font-family:var(--font-h);font-size:12px;letter-spacing:.08em;
  color:var(--cyan);background:rgba(34,224,214,.08);
  border:1px solid rgba(34,224,214,.42);
  transition:background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}
.copy-btn:hover{background:rgba(34,224,214,.18);}
.copy-btn[data-copy-state="done"]{
  background:var(--cyan);color:var(--ink-night);border-color:var(--cyan);
}
.site-footer__meta{
  display:flex;flex-wrap:wrap;gap:10px 28px;align-items:baseline;justify-content:space-between;
  padding-block:20px;border-top:1px solid var(--hair);
}
.site-footer__note{font-size:13px;color:var(--mist);max-width:62ch;}
.site-footer__legal{
  font-family:var(--font-num);font-size:12.5px;letter-spacing:.06em;color:rgba(138,153,181,.9);
}

/* ===== 返回顶部 ===== */
.back-to-top{
  position:fixed;right:clamp(14px,3vw,28px);bottom:clamp(14px,3vw,28px);z-index:70;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:44px;min-width:44px;padding:10px 15px;border-radius:2px;cursor:pointer;
  background:rgba(7,11,26,.92);color:var(--cyan);
  border:1px solid rgba(34,224,214,.5);
  font-family:var(--font-h);font-size:13px;letter-spacing:.1em;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .26s var(--ease), transform .26s var(--ease),
             visibility .26s var(--ease), background .22s var(--ease);
}
.back-to-top[data-visible]{
  opacity:1;visibility:visible;transform:none;
}
.back-to-top:hover{background:var(--cyan);color:var(--ink-night);}
.back-to-top__arrow{font-size:15px;line-height:1;}
.back-to-top__label{font-size:12.5px;}

/* ===== 显现动效 ===== */
[data-reveal]{
  opacity:0;transform:translateY(14px);
  transition:opacity .32s var(--ease), transform .32s var(--ease);
}
[data-reveal].is-visible{opacity:1;transform:none;}

/* ===== 断点 ===== */
@media (max-width:1180px){
  .command-bar__status{display:none;}
  .brand__tag{display:none;}
}
@media (max-width:1080px){
  .command-bar__actions .btn--ghost{display:none;}
}
@media (max-width:959px){
  .command-bar__inner{flex-wrap:wrap;gap:10px;justify-content:space-between;}
  .nav-toggle{display:inline-flex;}
  .command-bar__actions{margin-left:auto;}
  .mainnav{
    position:absolute;top:calc(100% + 9px);
    left:calc(var(--shell-pad) * -1);right:calc(var(--shell-pad) * -1);
    margin:0;padding:14px var(--shell-pad) 22px;
    background:var(--stand-blue);
    border-bottom:1px solid rgba(34,224,214,.35);
    box-shadow:0 26px 46px rgba(0,0,0,.55);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-10px);
    transition:opacity .24s var(--ease), transform .24s var(--ease), visibility .24s var(--ease);
  }
  .mainnav[data-open]{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .mainnav__list{flex-direction:column;align-items:stretch;gap:0;}
  .mainnav__link{
    justify-content:flex-start;font-size:16px;padding:13px 8px;
    border-bottom:1px dashed rgba(199,206,218,.16);
  }
  .mainnav__link[aria-current="page"]::after{top:50%;margin-top:-3px;right:10px;}
  .site-footer__top{grid-template-columns:1fr;}
  .site-footer__cols{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:600px){
  :root{--bar-h:64px;}
  .brand__name{font-size:16.5px;}
  .btn{padding:10px 14px;font-size:13.5px;}
  .btn--hot{padding-inline:18px 14px;}
  .site-footer__cols{grid-template-columns:1fr;}
  .site-footer__meta{flex-direction:column;align-items:flex-start;}
  .back-to-top__label{display:none;}
  .back-to-top{padding:10px 13px;}
  .scoreline__num{font-size:clamp(48px,16vw,88px);}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;}
  .status-dot{animation:none;}
  [data-reveal]{opacity:1;transform:none;transition:opacity .12s linear;}
  .btn:hover,.back-to-top{transition:opacity .12s linear;}
  .btn:hover{transform:none;}
}