/* 八大胜赛场 · 共享站点样式 /assets/site.css */

:root{
  --ink:#071426;
  --ink-deep:#04101f;
  --panel:#0B1F38;
  --line:#1E344D;
  --mist:#8FA6C1;
  --snow:#F4F7FB;
  --orange:#FF6B1A;
  --green:#35E08A;
  --amber:#FFB547;
  --slate:#2A3B52;
  --alert:#FF4D5E;

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

  --wrap-max:1220px;
  --pad:clamp(16px,4vw,40px);
  --gap:clamp(16px,2.2vw,24px);
  --section:clamp(56px,8vw,104px);
  --skew:-6deg;
  --shadow:0 8px 24px rgba(2,8,18,.45);
  --dur:.22s;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scrollbar-color:var(--line) var(--ink);}
body{
  margin:0;
  background-color:var(--ink);
  background-image:
    radial-gradient(1100px 520px at 82% -12%,rgba(255,107,26,.09),transparent 62%),
    radial-gradient(880px 480px at -8% 4%,rgba(53,224,138,.06),transparent 60%);
  background-repeat:no-repeat;
  color:var(--snow);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,svg,video,picture{display:block;max-width:100%;}
a{color:inherit;}
button{font:inherit;color:inherit;}
hr{border:0;border-top:1px solid var(--line);margin:0;}
::selection{background:var(--orange);color:#08131f;}
:focus-visible{outline:2px solid var(--orange);outline-offset:3px;}
#main-content{display:block;}
#main-content:focus{outline:none;}

/* ---------- 布局基础 ---------- */
.wrap{width:100%;max-width:var(--wrap-max);margin-inline:auto;padding-inline:var(--pad);}
.section{padding-block:var(--section);}
.section--tight{padding-block:clamp(32px,4vw,56px);}
.stack{display:grid;gap:var(--gap);}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:12px;}
.rule{height:1px;border:0;background:var(--line);}
.rule--diagonal{height:2px;border:0;background:linear-gradient(90deg,var(--orange),rgba(255,107,26,0));transform:rotate(-1.2deg);transform-origin:left center;margin-block:10px;}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em;}
.tilt{display:inline-block;transform:skewX(var(--skew));transform-origin:left bottom;}

/* ---------- 字体与正文 ---------- */
.display{font-size:clamp(40px,7.4vw,96px);font-weight:900;line-height:1.02;letter-spacing:-.02em;}
.h1{font-size:clamp(30px,4.4vw,58px);font-weight:900;line-height:1.06;letter-spacing:-.015em;}
.h2{font-size:clamp(24px,3vw,40px);font-weight:900;line-height:1.12;letter-spacing:-.01em;}
.h3{font-size:clamp(19px,2vw,26px);font-weight:800;line-height:1.24;}
.h4{font-size:18px;font-weight:700;line-height:1.35;}
.lede{max-width:44rem;font-size:clamp(16px,1.4vw,18px);line-height:1.85;color:var(--mist);}
.mark{color:var(--orange);}
.prose{max-width:44rem;}
.prose > * + *{margin-top:1.15em;}
.prose h2{font-size:clamp(22px,2.4vw,30px);font-weight:800;line-height:1.25;margin-top:2em;color:var(--snow);}
.prose h3{font-size:20px;font-weight:700;line-height:1.35;margin-top:1.6em;color:var(--snow);}
.prose p,.prose li{line-height:1.85;color:var(--mist);}
.prose strong{color:var(--snow);font-weight:700;}
.prose ul{list-style:disc;padding-left:1.25em;display:grid;gap:.4em;}
.prose ol{list-style:decimal;padding-left:1.25em;display:grid;gap:.4em;}
.prose a{color:var(--orange);text-decoration:none;border-bottom:1px solid rgba(255,107,26,.45);}
.eyebrow{display:inline-flex;align-items:center;gap:10px;margin:0 0 12px;font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.24em;text-transform:uppercase;color:var(--mist);}
.eyebrow::before{content:"";width:20px;height:3px;background:var(--orange);transform:skewX(-24deg);}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;padding-bottom:16px;border-bottom:1px solid var(--line);margin-bottom:clamp(24px,3.4vw,40px);}
.section-head .h2{margin:0;}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:13px 22px;border:1px solid var(--line);border-radius:2px;background:var(--panel);color:var(--snow);font-family:inherit;font-size:14px;font-weight:700;letter-spacing:.08em;line-height:1;text-decoration:none;cursor:pointer;transition:transform var(--dur) ease,border-color var(--dur) ease,background-color var(--dur) ease,color var(--dur) ease;}
.btn:hover{transform:translateY(-2px);border-color:var(--orange);color:var(--orange);}
.btn--primary{background:var(--orange);border-color:var(--orange);color:#08131f;}
.btn--primary:hover{background:#ff8340;border-color:#ff8340;color:#08131f;}
.btn--ghost{background:transparent;color:var(--snow);}
.btn--quiet{background:transparent;border-color:transparent;color:var(--mist);padding-inline:8px;}
.btn--quiet:hover{border-color:transparent;color:var(--orange);}

/* ---------- 徽标 / 面板 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 8px;border:1px solid var(--line);border-radius:2px;background:rgba(11,31,56,.8);color:var(--mist);font-family:var(--font-mono);font-size:11px;font-weight:500;letter-spacing:.14em;line-height:1;}
.badge::before{content:"";width:5px;height:5px;flex:0 0 auto;border-radius:50%;background:currentColor;}
.badge--brand{color:var(--orange);border-color:rgba(255,107,26,.45);background:rgba(255,107,26,.1);}
.badge--live{color:var(--green);border-color:rgba(53,224,138,.4);background:rgba(53,224,138,.08);}
.badge--beta{color:var(--amber);border-color:rgba(255,181,71,.42);background:rgba(255,181,71,.08);}
.badge--over{color:var(--alert);border-color:rgba(255,77,94,.42);background:rgba(255,77,94,.08);}
.badge--muted{color:var(--mist);background:rgba(42,59,82,.6);}
.panel{position:relative;padding:clamp(18px,2.4vw,28px);border:1px solid var(--line);border-radius:2px;background:var(--panel);box-shadow:var(--shadow);}
.panel--flat{box-shadow:none;background:rgba(11,31,56,.55);}
.panel--edge{border-left:2px solid var(--orange);}
.panel--link{display:block;color:inherit;text-decoration:none;transition:transform var(--dur) ease,border-color var(--dur) ease;}
.panel--link:hover{transform:translate(2px,-2px);border-color:var(--orange);}

/* ---------- 面包屑 ---------- */
.breadcrumb{font-size:12px;color:var(--mist);}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);letter-spacing:.08em;}
.breadcrumb-link{color:var(--mist);text-decoration:none;border-bottom:1px solid transparent;transition:color var(--dur) ease,border-color var(--dur) ease;}
.breadcrumb-link:hover,.breadcrumb-link:focus-visible{color:var(--orange);border-bottom-color:var(--orange);}
.breadcrumb-sep{color:var(--line);}
.breadcrumb-current{color:var(--snow);}

/* ---------- 图片容器（页面阶段复用） ---------- */
.media-frame{position:relative;display:block;overflow:hidden;aspect-ratio:16/10;border:1px solid var(--line);border-radius:2px;background:linear-gradient(135deg,var(--panel),var(--ink-deep));transition:border-color var(--dur) ease;}
.media-frame > img,.media-frame > video{width:100%;height:100%;object-fit:cover;}
.media-frame > picture{display:block;width:100%;height:100%;}
.media-frame > picture > img{width:100%;height:100%;object-fit:cover;}
.media-frame--wide{aspect-ratio:21/9;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--portrait{aspect-ratio:3/4;}
.media-frame--thumb{aspect-ratio:4/3;}
.media-frame__scrim{position:absolute;inset:0;background:linear-gradient(180deg,rgba(4,16,31,0) 42%,rgba(4,16,31,.86));pointer-events:none;}
.media-frame__tag{position:absolute;left:12px;bottom:12px;z-index:2;}
.media-frame__placeholder{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:11px;letter-spacing:.24em;color:var(--mist);background:repeating-linear-gradient(135deg,rgba(30,52,77,.55) 0 1px,rgba(7,20,38,.4) 1px 12px);}
a.media-frame:hover{border-color:var(--orange);}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:var(--gap);}
.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{grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap);}
.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-12{grid-column:span 12;}
.col-start-2{grid-column-start:2;}

/* ---------- 头部 ---------- */
.skip-link{position:fixed;top:10px;left:10px;z-index:300;padding:10px 18px;border-radius:2px;background:var(--orange);color:#08131f;font-size:14px;font-weight:700;text-decoration:none;transform:translateY(-180%);transition:transform var(--dur) ease;}
.skip-link:focus{transform:translateY(0);}
.scroll-progress{position:fixed;top:0;left:0;right:0;height:2px;z-index:70;pointer-events:none;background:transparent;}
.scroll-progress-bar{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--orange),var(--amber) 55%,var(--green));opacity:.95;}

.site-header{position:sticky;top:0;z-index:50;background:linear-gradient(180deg,rgba(7,20,38,.98),rgba(7,20,38,.93));border-bottom:1px solid var(--line);backdrop-filter:blur(10px);}
.header-rail{border-bottom:1px solid var(--line);color:var(--mist);}
.rail-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:34px;}
.rail-mark{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;color:var(--mist);line-height:1.4;}
.status-dot{width:6px;height:6px;flex:0 0 auto;border-radius:50%;background:var(--green);box-shadow:0 0 0 3px rgba(53,224,138,.14);}
.rail-links{display:flex;align-items:center;gap:clamp(12px,2vw,22px);}
.rail-link{position:relative;display:inline-block;padding-block:6px;color:var(--mist);font-size:12px;letter-spacing:.14em;text-decoration:none;transition:color var(--dur) ease;}
.rail-link::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:var(--orange);transform:scaleX(0);transform-origin:left center;transition:transform var(--dur) ease;}
.rail-link:hover,.rail-link:focus-visible{color:var(--orange);}
.rail-link:hover::after,.rail-link:focus-visible::after{transform:scaleX(1);}

.masthead{position:relative;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:var(--gap);padding-block:clamp(14px,2.2vw,22px);}
.masthead-aside{display:flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;line-height:1;color:var(--mist);}
.masthead-aside--start{justify-self:start;}
.masthead-aside--end{justify-self:end;}
.brand{display:inline-flex;flex-direction:column;align-items:center;gap:6px;color:var(--snow);text-align:center;text-decoration:none;}
.brand-mark{position:relative;display:inline-block;padding-bottom:6px;font-size:clamp(22px,3.2vw,34px);font-weight:900;letter-spacing:.1em;line-height:1.05;text-indent:.1em;}
.brand-mark::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--orange);transform:skewX(-24deg);transform-origin:left center;transition:background-color var(--dur) ease;}
.brand-line{font-family:var(--font-mono);font-size:10px;letter-spacing:.44em;text-indent:.44em;line-height:1;color:var(--mist);transition:color var(--dur) ease;}
.brand:hover .brand-mark::after{background:var(--green);}
.brand:hover .brand-line{color:var(--snow);}
.cta-link{display:inline-flex;align-items:center;gap:9px;padding:9px 14px;border:1px solid var(--line);border-radius:2px;background:rgba(11,31,56,.85);color:var(--snow);font-size:13px;font-weight:700;letter-spacing:.08em;text-decoration:none;transition:transform var(--dur) ease,border-color var(--dur) ease,color var(--dur) ease,background-color var(--dur) ease;}
.cta-link::before{content:"";width:6px;height:6px;background:var(--green);transform:skewX(-20deg);}
.cta-link-arrow{font-family:var(--font-mono);color:var(--orange);transition:transform var(--dur) ease;}
.cta-link:hover,.cta-link:focus-visible{transform:translateY(-2px);border-color:var(--orange);color:var(--orange);background:rgba(255,107,26,.08);}
.cta-link:hover .cta-link-arrow,.cta-link:focus-visible .cta-link-arrow{transform:translateX(2px);}

.nav-toggle{display:none;position:absolute;top:50%;right:var(--pad);transform:translateY(-50%);width:44px;height:44px;padding:0;align-items:center;justify-content:center;border:1px solid var(--line);border-radius:2px;background:transparent;color:var(--snow);cursor:pointer;transition:border-color var(--dur) ease,color var(--dur) ease;}
.nav-toggle:hover{border-color:var(--orange);color:var(--orange);}
.nav-toggle-bars{position:relative;display:block;width:18px;height:2px;background:currentColor;transition:background-color var(--dur) ease;}
.nav-toggle-bars::before,.nav-toggle-bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform var(--dur) ease,top var(--dur) ease;}
.nav-toggle-bars::before{top:-6px;}
.nav-toggle-bars::after{top:6px;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after{top:0;transform:rotate(-45deg);}

.site-nav{position:relative;border-top:1px solid var(--line);background:rgba(4,16,31,.42);}
.nav-inner{display:flex;align-items:center;justify-content:center;min-height:54px;}
.nav-list{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:clamp(2px,1.4vw,16px);}
.nav-item{display:block;}
.nav-link{position:relative;display:inline-flex;align-items:baseline;gap:7px;padding:17px 8px;color:var(--mist);font-size:14px;font-weight:500;letter-spacing:.12em;white-space:nowrap;text-decoration:none;transition:color var(--dur) ease,transform var(--dur) ease;}
.nav-index{font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--line);transition:color var(--dur) ease;}
.nav-link::after{content:"";position:absolute;left:8px;right:8px;bottom:11px;height:2px;background:var(--orange);transform:scaleX(0);transform-origin:left center;transition:transform var(--dur) ease;}
.nav-link:hover,.nav-link:focus-visible{color:var(--snow);transform:translateY(-2px);}
.nav-link:hover::after,.nav-link:focus-visible::after{transform:scaleX(1);}
.nav-link:hover .nav-index,.nav-link:focus-visible .nav-index{color:var(--orange);}
.nav-link[aria-current="page"]{color:var(--orange);font-weight:700;}
.nav-link[aria-current="page"] .nav-index{color:var(--orange);}
.nav-link[aria-current="page"]::after{transform:scaleX(1);}

/* ---------- 页脚 ---------- */
.site-footer{position:relative;margin-top:var(--section);border-top:1px solid var(--line);background:linear-gradient(180deg,var(--ink) 0%,#050E1C 100%);}
.footer-edge{height:3px;background:linear-gradient(90deg,var(--orange) 0 16%,var(--green) 16% 21%,var(--line) 21% 100%);}
.footer-inner{display:grid;grid-template-columns:minmax(220px,1fr) 2fr;gap:clamp(28px,4vw,64px);align-items:start;padding-block:clamp(36px,5vw,60px) 28px;}
.footer-brand{position:relative;min-width:0;}
.footer-brand-link{position:relative;display:inline-block;padding-bottom:8px;color:var(--snow);font-size:clamp(20px,2.4vw,26px);font-weight:900;letter-spacing:.1em;text-decoration:none;}
.footer-brand-link::after{content:"";position:absolute;left:0;bottom:0;width:52px;height:3px;background:var(--orange);transform:skewX(-24deg);transform-origin:left center;transition:background-color var(--dur) ease,width var(--dur) ease;}
.footer-brand-link:hover::after,.footer-brand-link:focus-visible::after{width:100%;background:var(--green);}
.footer-brand-line{margin-top:12px;font-family:var(--font-mono);font-size:11px;letter-spacing:.36em;color:var(--mist);}
.footer-note{margin-top:14px;max-width:30ch;font-size:13px;line-height:1.75;color:var(--mist);}
.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,3vw,36px);}
.footer-col{min-width:0;}
.footer-col-title{margin:0 0 14px;padding-bottom:10px;border-bottom:1px solid var(--line);color:var(--snow);font-size:12px;font-weight:700;letter-spacing:.22em;}
.footer-list{display:grid;gap:10px;}
.footer-link{position:relative;display:inline-block;color:var(--mist);font-size:14px;text-decoration:none;transition:color var(--dur) ease,transform var(--dur) ease;}
.footer-link::before{content:"";position:absolute;left:-12px;top:50%;width:6px;height:2px;background:var(--orange);transform:translateY(-50%) scaleX(0);transform-origin:left center;transition:transform var(--dur) ease;}
.footer-link:hover,.footer-link:focus-visible{color:var(--orange);transform:translateX(2px);}
.footer-link:hover::before,.footer-link:focus-visible::before{transform:translateY(-50%) scaleX(1);}
.footer-contact{display:flex;flex-wrap:wrap;align-items:center;gap:12px clamp(16px,3vw,32px);padding-block:22px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.contact-item{display:inline-flex;flex-wrap:wrap;align-items:center;gap:10px;}
.contact-label{padding:3px 6px;border:1px solid var(--line);border-radius:2px;color:var(--mist);font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;line-height:1.3;}
.contact-value{color:var(--snow);font-family:var(--font-mono);font-size:13px;letter-spacing:.02em;}
.contact-value--plain{color:var(--mist);font-family:var(--font-sans);font-size:13px;}
.copy-btn{padding:5px 8px;border:1px solid var(--line);border-radius:2px;background:transparent;color:var(--mist);font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;line-height:1;cursor:pointer;transition:color var(--dur) ease,border-color var(--dur) ease,transform var(--dur) ease;}
.copy-btn:hover,.copy-btn:focus-visible{border-color:var(--orange);color:var(--orange);transform:translateY(-2px);}
.copy-btn[data-copied="true"]{border-color:var(--green);color:var(--green);}
.contact-note{flex:1 1 100%;max-width:72ch;font-size:12px;line-height:1.8;color:var(--mist);}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;padding-block:20px 26px;font-size:12px;color:var(--mist);}
.legal-line{display:flex;flex-wrap:wrap;align-items:center;gap:8px;}
.legal-icp{font-family:var(--font-mono);letter-spacing:.04em;}
.legal-sep{color:var(--line);}
.legal-link{color:var(--mist);text-decoration:none;border-bottom:1px solid transparent;transition:color var(--dur) ease,border-color var(--dur) ease;}
.legal-link:hover,.legal-link:focus-visible{color:var(--orange);border-bottom-color:var(--orange);}
.legal-copy{color:var(--mist);font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .col-7,.col-8{grid-column:span 12;}
}
@media (max-width:900px){
  .nav-toggle{display:flex;}
  .masthead{grid-template-columns:1fr;justify-items:center;padding-block:14px;}
  .masthead-aside{display:none;}
  .site-nav{max-height:0;overflow:hidden;transition:max-height .3s ease;}
  .site-nav[data-open]{max-height:min(78vh,540px);overflow-y:auto;}
  .nav-inner{justify-content:flex-start;min-height:0;padding-block:6px 14px;}
  .nav-list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav-item{border-bottom:1px solid var(--line);}
  .nav-item:last-child{border-bottom:0;}
  .nav-link{display:flex;padding:15px 4px;font-size:16px;letter-spacing:.1em;}
  .nav-link::after{bottom:8px;}
}
@media (max-width:980px){
  .footer-inner{grid-template-columns:minmax(0,1fr);gap:32px;}
}
@media (max-width:720px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}
  .grid--12{grid-template-columns:repeat(6,minmax(0,1fr));}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:span 6;}
  .col-start-2{grid-column-start:auto;}
  .section{padding-block:clamp(40px,10vw,64px);}
}
@media (max-width:640px){
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px 18px;}
  .footer-legal{flex-direction:column;align-items:flex-start;}
  .contact-value{font-size:12px;word-break:break-all;}
  .contact-item{gap:8px;}
}
@media (max-width:380px){
  .rail-links{gap:12px;}
  .rail-link{letter-spacing:.08em;}
}

/* ---------- 动效偏好 ---------- */
@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;
  }
  .btn:hover,.cta-link:hover,.footer-link:hover,.nav-link:hover,.copy-btn:hover,
  .panel--link:hover{transform:none;}
  .tilt{transform:none;}
}