/* ============================================================
   欧亿体育安装 · 共享站点样式 /assets/site.css
   深墨底 · 蓝图网格 · 欧金锚点 · 印刷叠纸质感
   ============================================================ */

:root{
  --ink:#0B1F1A;
  --ink-deep:#081713;
  --panel:#12312A;
  --line:#25574A;
  --gold:#E8912A;
  --gold-hi:#F6C15C;
  --ice:#6FC9E8;
  --paper:#EFE9DD;
  --paper-2:#FBF7EE;
  --muted:#8FA39B;
  --ink-text:#14211D;
  --edge:#C9BFAC;

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

  --grid:24px;
  --header-h:auto;
}

/* ---------- Reset ---------- */
*,
*::before,
*::after{ box-sizing:border-box; }

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:110px;
}

body{
  margin:0;
  min-height:100%;
  background-color:var(--ink);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  opacity:.45;
  background-image:
    linear-gradient(to right, rgba(37,87,74,.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(37,87,74,.42) 1px, transparent 1px);
  background-size:var(--grid) var(--grid);
}

body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(1200px 620px at 78% -12%, rgba(232,145,42,.11), transparent 62%),
    radial-gradient(900px 520px at 8% 112%, rgba(111,201,232,.08), transparent 66%);
}

main{
  position:relative;
  z-index:1;
  display:block;
}

h1,h2,h3,h4,p,figure,blockquote,ul,ol,dl{
  margin:0;
}

h1,h2,h3,h4{
  font-weight:400;
  line-height:1.2;
}

img{
  max-width:100%;
  display:block;
}

button{
  font-family:inherit;
}

a{
  color:var(--gold);
}

[hidden]{
  display:none !important;
}

.mono{
  font-family:var(--font-mono);
  letter-spacing:0;
}

/* ---------- 焦点 ---------- */
:focus-visible{
  outline:2px solid var(--gold-hi);
  outline-offset:2px;
}

.skip-link{
  position:fixed;
  top:10px;
  left:-9999px;
  z-index:200;
  padding:12px 18px;
  background:var(--gold);
  color:#1A1206;
  font-size:13px;
  letter-spacing:.1em;
  text-decoration:none;
  border:1px solid var(--gold-hi);
}
.skip-link:focus{
  left:12px;
}

/* ---------- 容器与网格 ---------- */
.wrap{
  width:100%;
  max-width:1320px;
  margin:0 auto;
  padding-left:24px;
  padding-right:24px;
}

.section{
  position:relative;
  padding-top:56px;
  padding-bottom:56px;
}

.band{
  background:var(--panel);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12, minmax(0,1fr));
  gap:24px;
}

.col-main{
  grid-column:span 8;
}

.col-note{
  grid-column:10 / span 3;
}

/* ---------- 刻度条 ---------- */
.tick-rule{
  position:relative;
  height:14px;
  border-top:1px solid var(--line);
  background-image:repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 24px);
  background-size:24px 6px;
  background-repeat:repeat-x;
  background-position:0 0;
}

.tick-rule--progress::after{
  content:"";
  position:absolute;
  left:0;
  top:0;
  height:1px;
  width:var(--progress,0%);
  background:var(--gold);
}

.rule-full{
  height:12px;
  border-top:1px solid var(--line);
  background-image:repeating-linear-gradient(to right, var(--line) 0 1px, transparent 1px 24px);
  background-size:24px 6px;
  background-repeat:repeat-x;
  background-position:0 0;
}

/* ---------- 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,31,26,.96);
  -webkit-backdrop-filter:blur(7px);
  backdrop-filter:blur(7px);
  border-top:3px double var(--line);
  border-bottom:1px solid var(--line);
}

.header-inner{
  display:grid;
  grid-template-columns:auto 1fr auto;
  grid-template-areas:"brand nav cta";
  align-items:center;
  gap:28px;
  padding-top:13px;
  padding-bottom:13px;
}

.brand{
  grid-area:brand;
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:inherit;
}

.brand__mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  flex:0 0 38px;
  width:38px;
  height:38px;
  background:var(--gold);
  color:#12211C;
  font-family:var(--font-display);
  font-size:20px;
  line-height:1;
  border:1px solid var(--gold-hi);
  box-shadow:3px 3px 0 rgba(0,0,0,.45);
}

.brand__text{
  display:flex;
  flex-direction:column;
  gap:3px;
}

.brand__name{
  font-family:var(--font-display);
  font-size:19px;
  line-height:1.1;
  letter-spacing:-.01em;
  color:var(--paper);
}

.brand__tagline{
  font-size:11px;
  letter-spacing:.14em;
  color:var(--muted);
}

.primary-nav{
  grid-area:nav;
}

.primary-nav__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-wrap:wrap;
  justify-content:flex-end;
  gap:0 26px;
}

.primary-nav__item{
  display:block;
}

.primary-nav__link{
  display:block;
  padding:10px 2px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--paper);
  text-decoration:none;
  border-bottom:2px solid transparent;
}

.primary-nav__link:hover{
  color:var(--gold-hi);
  border-bottom-color:var(--gold-hi);
}

.primary-nav__link[aria-current="page"]{
  color:var(--gold);
  border-bottom-color:var(--gold);
}

.header-cta{
  grid-area:cta;
}

.nav-toggle{
  grid-area:toggle;
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 13px;
  background:transparent;
  border:1px solid var(--line);
  color:var(--paper);
  font-size:12px;
  letter-spacing:.14em;
  cursor:pointer;
}

.nav-toggle:hover{
  border-color:var(--gold);
  color:var(--gold);
}

.nav-toggle__bars{
  position:relative;
  display:block;
  width:16px;
  height:1px;
  background:currentColor;
}

.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:16px;
  height:1px;
  background:currentColor;
  transition:transform .18s ease;
}

.nav-toggle__bars::before{ top:-5px; }
.nav-toggle__bars::after{ top:5px; }

.nav-toggle[aria-expanded="true"] .nav-toggle__bars{
  background:transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{
  transform:translateY(5px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{
  transform:translateY(-5px) rotate(-45deg);
}

.scroll-meter{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:rgba(37,87,74,.5);
  overflow:hidden;
}

.scroll-meter__fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg, var(--gold), var(--gold-hi));
  transition:width .12s linear;
}

/* ---------- 赛季轴 ---------- */
.season-rail{
  position:fixed;
  left:0;
  top:50%;
  transform:translateY(-50%);
  z-index:50;
  display:none;
  width:44px;
  background:var(--ink-deep);
  border:1px solid var(--line);
  border-left:0;
}

.season-rail__label{
  display:block;
  padding:12px 0;
  text-align:center;
  font-size:10px;
  letter-spacing:.2em;
  color:var(--muted);
  writing-mode:vertical-rl;
  text-orientation:upright;
  margin:0 auto;
}

.season-rail__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
}

.season-rail__item{
  display:block;
  width:100%;
  padding:14px 0;
  text-align:center;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  writing-mode:vertical-rl;
  text-orientation:upright;
  color:var(--muted);
  background:transparent;
  border:0;
  border-top:1px solid var(--line);
  cursor:pointer;
  transition:color .16s ease, background-color .16s ease;
}

.season-rail__item:hover{
  color:var(--paper);
  background:rgba(232,145,42,.09);
}

.season-rail__item.is-active{
  color:var(--gold);
  background:rgba(232,145,42,.13);
  box-shadow:inset 3px 0 0 var(--gold);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  z-index:1;
  margin-top:80px;
  background:var(--ink-deep);
  border-top:3px double var(--line);
  color:var(--paper);
}

.footer-top{
  display:grid;
  grid-template-columns:minmax(230px,1.5fr) repeat(4, minmax(110px,1fr));
  gap:34px 28px;
  padding-top:56px;
  padding-bottom:38px;
}

.footer-brand{
  min-width:0;
}

.footer-brand__note{
  margin-top:16px;
  max-width:34ch;
  font-size:14px;
  line-height:1.85;
  color:var(--muted);
}

.footer-col__title{
  margin-bottom:14px;
  padding-bottom:8px;
  font-family:var(--font-body);
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--gold);
  border-bottom:1px solid var(--line);
}

.footer-col__list{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}

.footer-col__list a{
  font-size:14px;
  letter-spacing:.03em;
  color:#CFDAD5;
  text-decoration:none;
}

.footer-col__list a:hover{
  color:var(--gold-hi);
  text-decoration:underline;
  text-underline-offset:4px;
}

.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:10px 24px;
  padding-top:22px;
  padding-bottom:34px;
  font-size:13px;
  color:var(--muted);
}

.footer-contact{
  max-width:76ch;
  line-height:1.8;
}

.footer-contact .mono{
  color:#CFDAD5;
}

.footer-contact--note{
  max-width:56ch;
}

.footer-legal{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  gap:12px;
}

.footer-legal .mono{
  color:#CFDAD5;
}

.footer-legal__sep{
  color:var(--line);
}

/* ---------- 眉标 / 标签 ---------- */
.eyebrow{
  display:inline-block;
  padding:5px 0;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--gold);
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
}

.tag{
  display:inline-block;
  padding:3px 9px;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--ice);
  background:rgba(111,201,232,.08);
  border:1px solid rgba(111,201,232,.45);
}

.tag--gold{
  color:var(--gold);
  background:rgba(232,145,42,.1);
  border-color:rgba(232,145,42,.5);
}

.tag--paper{
  color:var(--ink-text);
  background:var(--paper);
  border-color:var(--edge);
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--gold);
  background:transparent;
  border:1px solid var(--gold);
  text-decoration:none;
  cursor:pointer;
  transition:background-color .16s ease, color .16s ease, border-color .16s ease;
}

.btn:hover{
  box-shadow:inset 0 0 0 1px currentColor;
}

.btn--gold{
  color:#1A1206;
  background:var(--gold);
  border-color:var(--gold);
}

.btn--gold:hover{
  background:var(--gold-hi);
  border-color:var(--gold-hi);
}

.btn--ghost{
  color:var(--paper);
  border-color:var(--line);
}

.btn--ghost:hover{
  color:var(--gold-hi);
  border-color:var(--gold-hi);
}

/* ---------- 纸张叠层 ---------- */
.paper{
  padding:28px;
  background:var(--paper-2);
  color:var(--ink-text);
  border:1px solid var(--edge);
  box-shadow:7px 7px 0 rgba(0,0,0,.42);
}

.paper h2,
.paper h3{
  color:var(--ink-text);
}

.paper-stack{
  position:relative;
}

.paper-stack::after{
  content:"";
  position:absolute;
  inset:9px -9px -9px 9px;
  background:var(--paper);
  border:1px solid var(--edge);
  z-index:0;
}

.paper-stack > *{
  position:relative;
  z-index:1;
}

/* ---------- 旁注 ---------- */
.note{
  padding:14px 16px;
  font-size:15px;
  line-height:1.8;
  color:#C6D3CE;
  background:rgba(111,201,232,.06);
  border-left:2px solid var(--ice);
}

.note .mono{
  color:var(--ice);
}

/* ---------- 面包屑 / 目录 ---------- */
.crumbs{
  padding:18px 0 0;
  font-size:12px;
  letter-spacing:.1em;
  color:var(--muted);
}

.crumbs a{
  color:var(--muted);
  text-decoration:none;
}

.crumbs a:hover{
  color:var(--gold);
}

.crumbs__sep{
  margin:0 8px;
  color:var(--line);
}

.toc{
  list-style:none;
  margin:0;
  padding:0;
  border-left:1px solid var(--line);
}

.toc__link{
  display:block;
  margin-left:-2px;
  padding:9px 0 9px 14px;
  font-size:13px;
  letter-spacing:.06em;
  color:var(--muted);
  text-decoration:none;
  border-left:2px solid transparent;
}

.toc__link:hover{
  color:var(--paper);
}

.toc__link.is-current{
  color:var(--gold);
  border-left-color:var(--gold);
}

/* ---------- 正文 ---------- */
.prose{
  max-width:72ch;
  font-size:17px;
  line-height:1.85;
  color:#DCE5E1;
}

.prose > * + *{
  margin-top:1.2em;
}

.prose h2{
  margin-top:2.2em;
  font-family:var(--font-display);
  font-size:clamp(1.6rem,2.6vw,2.1rem);
  line-height:1.16;
  letter-spacing:-.015em;
  color:var(--paper);
}

.prose h3{
  margin-top:1.8em;
  font-family:var(--font-display);
  font-size:clamp(1.2rem,1.9vw,1.45rem);
  line-height:1.25;
  color:var(--paper);
}

.prose ul,
.prose ol{
  padding-left:1.3em;
}

.prose li + li{
  margin-top:.5em;
}

.prose strong{
  color:var(--gold-hi);
  font-weight:600;
}

.prose a{
  color:var(--gold-hi);
}

/* ---------- 数据 / 索引 ---------- */
.stat{
  display:flex;
  flex-direction:column;
  gap:4px;
}

.stat__num{
  font-family:var(--font-mono);
  font-size:clamp(1.6rem,3vw,2.4rem);
  line-height:1.05;
  letter-spacing:-.01em;
  color:var(--gold);
}

.stat__label{
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
}

.ledger{
  list-style:none;
  margin:0;
  padding:0;
  border-top:1px solid var(--line);
}

.ledger__item{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:18px;
  align-items:baseline;
  padding:16px 4px;
  border-bottom:1px solid var(--line);
}

.ledger__item a{
  color:var(--paper);
  text-decoration:none;
}

.ledger__item a:hover{
  color:var(--gold-hi);
  text-decoration:underline;
  text-underline-offset:4px;
}

.ledger__idx{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--gold);
}

.ledger__meta{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--muted);
}

/* ---------- 筛选 ---------- */
.filters{
  display:flex;
  flex-wrap:wrap;
  border:1px solid var(--line);
}

.filter-btn{
  padding:10px 16px;
  font-size:12px;
  letter-spacing:.14em;
  color:var(--muted);
  background:transparent;
  border:0;
  border-right:1px solid var(--line);
  cursor:pointer;
  transition:background-color .16s ease, color .16s ease;
}

.filter-btn:last-child{
  border-right:0;
}

.filter-btn:hover{
  color:var(--paper);
  background:rgba(232,145,42,.1);
}

.filter-btn[aria-pressed="true"]{
  color:#1A1206;
  background:var(--gold);
}

/* ---------- 步骤 ---------- */
.steps{
  list-style:none;
  margin:0;
  padding:0;
}

.steps__item{
  display:grid;
  grid-template-columns:auto 1fr;
  gap:18px;
  padding:18px 0;
  border-top:1px solid var(--line);
}

.steps__no{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--gold);
}

/* ---------- 问答 ---------- */
.faq{
  border-bottom:1px solid var(--line);
}

.faq__item{
  border-top:1px solid var(--line);
}

.faq__q{
  display:flex;
  align-items:baseline;
  justify-content:space-between;
  gap:18px;
  width:100%;
  padding:18px 0;
  font-size:16px;
  line-height:1.6;
  text-align:left;
  color:var(--paper);
  background:transparent;
  border:0;
  cursor:pointer;
}

.faq__q:hover{
  color:var(--gold-hi);
}

.faq__icon{
  font-family:var(--font-mono);
  font-size:14px;
  color:var(--gold);
}

.faq__a{
  display:none;
  max-width:72ch;
  padding-bottom:18px;
  font-size:15px;
  line-height:1.8;
  color:#C6D3CE;
}

.faq__item[data-open="true"] .faq__a{
  display:block;
}

/* ---------- 对照 ---------- */
.compare{
  display:grid;
  grid-template-columns:1fr 1fr;
  border:1px solid var(--line);
}

.compare__col{
  padding:20px;
}

.compare__col + .compare__col{
  border-left:1px solid var(--line);
}

.compare__head{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--ice);
}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  background:var(--panel);
  border:1px solid var(--line);
  box-shadow:6px 6px 0 rgba(0,0,0,.4);
}

.media-frame__img,
.media-frame img{
  display:block;
  width:100%;
  height:100%;
  aspect-ratio:16 / 9;
  object-fit:cover;
  filter:saturate(.86) contrast(1.06);
}

.media-frame--tall .media-frame__img,
.media-frame--tall img{
  aspect-ratio:4 / 5;
}

.media-frame__cap{
  position:absolute;
  left:0;
  bottom:0;
  padding:6px 11px;
  font-size:11px;
  letter-spacing:.14em;
  color:var(--ink-text);
  background:var(--paper-2);
  border-top:1px solid var(--edge);
}

.media-frame--empty{
  min-height:180px;
  background-image:repeating-linear-gradient(135deg, rgba(37,87,74,.55) 0 1px, transparent 1px 11px);
}

/* ---------- 显现 ---------- */
.js-on [data-reveal]{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .32s ease-out, transform .32s ease-out;
}

.js-on [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ---------- 响应式 ---------- */
@media (min-width:1180px){
  .wrap{
    padding-left:72px;
  }
  .season-rail{
    display:block;
  }
}

@media (max-width:1024px){
  .footer-top{
    grid-template-columns:repeat(2, minmax(0,1fr));
  }
  .footer-brand{
    grid-column:1 / -1;
  }
  .col-main{
    grid-column:span 12;
  }
  .col-note{
    grid-column:span 12;
  }
}

@media (max-width:980px){
  .header-inner{
    grid-template-columns:1fr auto;
    grid-template-areas:
      "brand toggle"
      "nav nav";
    gap:12px;
    padding-top:12px;
    padding-bottom:14px;
  }
  .nav-toggle{
    display:inline-flex;
  }
  .primary-nav{
    display:none;
  }
  .primary-nav[data-open="true"]{
    display:block;
  }
  .primary-nav__list{
    flex-direction:column;
    justify-content:flex-start;
    gap:0;
    border-top:1px solid var(--line);
  }
  .primary-nav__item{
    border-bottom:1px solid var(--line);
  }
  .primary-nav__link{
    padding:15px 2px;
    font-size:13px;
  }
  .header-cta{
    display:none;
  }
  .grid-12{
    grid-template-columns:repeat(6, minmax(0,1fr));
  }
  .col-main,
  .col-note{
    grid-column:span 6;
  }
  .compare{
    grid-template-columns:1fr;
  }
  .compare__col + .compare__col{
    border-left:0;
    border-top:1px solid var(--line);
  }
}

@media (max-width:860px){
  .prose{
    font-size:16px;
  }
  .section{
    padding-top:42px;
    padding-bottom:42px;
  }
}

@media (max-width:620px){
  .wrap{
    padding-left:18px;
    padding-right:18px;
  }
  .footer-top{
    grid-template-columns:1fr;
    gap:26px;
    padding-top:44px;
    padding-bottom:30px;
  }
  .footer-bottom{
    flex-direction:column;
    align-items:flex-start;
  }
  .brand__tagline{
    display:none;
  }
  .paper{
    padding:20px;
  }
}

/* ---------- 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;
  }
  .js-on [data-reveal]{
    opacity:1;
    transform:none;
  }
  .scroll-meter__fill{
    transition:none;
  }
}