/* ============================================================
   /assets/site.css
   ab娱乐体育 · 共享外壳
   蓝图网格 / 午夜霓虹 / 复古出版索引
   ============================================================ */

/* ---------- 1. Reset 与变量 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;-moz-text-size-adjust:100%}
html,body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}

:root{
  --paper:#F4EFE4;
  --paper-2:#E7DECD;
  --ink:#17130F;
  --midnight:#0B0908;
  --cyan:#12E3D1;
  --cyan-deep:#0B7C74;
  --magenta:#FF3D8B;
  --gold:#D8A64A;
  --rust:#D9482B;
  --slate:#6E6559;
  --mist:#FBF9F4;

  --rail-w:116px;
  --shell-max:1280px;
  --gutter:clamp(16px,4vw,56px);
  --radius:2px;

  --line:rgba(23,19,15,.18);
  --line-soft:rgba(23,19,15,.10);
  --line-dark:rgba(251,249,244,.16);

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","SimSun",serif;
  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}

/* ---------- 2. 基础排版 ---------- */
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.7;
  color:var(--ink);
  background-color:var(--paper);
  background-image:
    linear-gradient(to right,rgba(23,19,15,.07) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(23,19,15,.07) 1px,transparent 1px);
  background-size:44px 44px,44px 44px;
  background-attachment:fixed;
  min-height:100vh;
}
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:800;
  line-height:1.2;
  letter-spacing:.01em;
}
h1{font-size:clamp(32px,4.4vw,64px)}
h2{font-size:clamp(24px,2.6vw,30px)}
h3{font-size:clamp(19px,1.8px,22px)}
h3{font-size:clamp(19px,1.8vw,22px)}
h4{font-size:16px}
p{margin:0 0 1em}
p:last-child{margin-bottom:0}
a{color:var(--cyan-deep);text-decoration-thickness:1px;text-underline-offset:3px}
a:hover{color:var(--rust)}
strong{font-weight:700}
:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}
[id]{scroll-margin-top:88px}
.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}
.muted{color:var(--slate)}

/* ---------- 3. 外壳骨架 ---------- */
.site-main{display:block}
.shell{width:100%;max-width:var(--shell-max);margin:0 auto;padding:0 var(--gutter)}

@media (min-width:901px){
  body{padding-left:var(--rail-w)}
}

/* ---------- 4. 头部：左侧轨道导航 ---------- */
.skip-link{
  position:fixed;top:8px;left:8px;z-index:140;
  display:inline-block;
  padding:10px 14px;
  background:var(--ink);color:var(--mist);
  border:1px solid var(--cyan);border-radius:var(--radius);
  font-size:13px;letter-spacing:.06em;text-decoration:none;
  transform:translateY(-220%);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0);color:var(--cyan)}

.site-rail{
  position:fixed;top:0;left:0;bottom:0;
  width:var(--rail-w);
  display:flex;flex-direction:column;gap:14px;
  padding:16px 12px 12px;
  background-color:var(--midnight);
  background-image:
    linear-gradient(to bottom,rgba(18,227,209,.06) 1px,transparent 1px);
  background-size:100% 44px;
  color:var(--mist);
  border-right:1px solid rgba(18,227,209,.24);
  z-index:60;
}

.rail__brand{padding:2px 0 12px;border-bottom:1px solid rgba(251,249,244,.14)}
.brand{display:block;text-decoration:none;color:var(--mist)}
.brand__mark{
  display:inline-flex;align-items:center;justify-content:center;
  width:38px;height:26px;margin-bottom:8px;
  border:1px solid var(--cyan);color:var(--cyan);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
}
.brand__name{display:block;font-family:var(--font-serif);font-size:15px;font-weight:800;line-height:1.25;letter-spacing:.02em}
.brand__line{display:block;margin-top:5px;font-size:10px;line-height:1.5;letter-spacing:.04em;color:var(--slate)}
.brand:hover .brand__name{color:var(--cyan)}
.brand:hover .brand__mark{border-color:var(--magenta);color:var(--magenta)}

.rail__toggle{display:none}
.rail__toggle-bars{display:none}
.rail__toggle-text{font-size:12px;letter-spacing:.08em}

.rail__nav{
  flex:1 1 auto;min-height:0;
  display:flex;flex-direction:column;
  overflow-y:auto;overflow-x:hidden;
}
.rail__kicker{
  margin:0 0 10px;
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;
  color:var(--slate);text-transform:uppercase;
}
.rail__list{display:flex;flex-direction:column}
.rail__item{border-top:1px solid rgba(251,249,244,.10)}
.rail__item:last-child{border-bottom:1px solid rgba(251,249,244,.10)}
.rail__link{
  position:relative;display:block;
  padding:9px 6px 9px 10px;
  color:var(--mist);text-decoration:none;
  transition:color .18s ease,background-color .18s ease;
}
.rail__link::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;
  background:var(--cyan);
  transform:scaleY(0);transform-origin:top center;
  transition:transform .2s ease;
}
.rail__link:hover{color:var(--cyan);background:rgba(18,227,209,.07)}
.rail__link:hover::before{transform:scaleY(1)}
.rail__link[aria-current="page"]{color:var(--cyan);background:rgba(18,227,209,.11)}
.rail__link[aria-current="page"]::before{transform:scaleY(1);background:var(--magenta)}
.rail__idx{display:block;margin-bottom:2px;font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--rust)}
.rail__link[aria-current="page"] .rail__idx{color:var(--magenta)}
.rail__label{display:block;font-size:11.5px;line-height:1.35;letter-spacing:.04em}

.rail__foot{
  display:flex;flex-direction:column;gap:8px;
  margin-top:auto;padding-top:12px;
  border-top:1px solid rgba(251,249,244,.14);
}
.rail__cta{
  width:100%;padding:8px 6px;
  font-size:11px;line-height:1.3;letter-spacing:.02em;text-align:center;
}

.rail__progress{
  position:absolute;right:0;top:0;bottom:0;width:2px;
  background:rgba(251,249,244,.10);
}
.rail__progress-bar{
  display:block;width:100%;height:100%;
  background:linear-gradient(to bottom,var(--cyan),var(--magenta));
  transform:scaleY(var(--p,0));transform-origin:top center;
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:10px 14px;
  font-family:var(--font-sans);font-size:13px;font-weight:500;line-height:1.35;
  letter-spacing:.06em;text-decoration:none;
  border:1px solid transparent;border-radius:var(--radius);
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--solid{background:var(--cyan);color:var(--midnight);border-color:var(--cyan)}
.btn--solid:hover{background:var(--mist);color:var(--midnight);border-color:var(--mist)}
.btn--ghost{background:transparent;color:var(--mist);border-color:rgba(251,249,244,.30)}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);background:rgba(18,227,209,.10)}
.btn--ink{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.btn--ink:hover{background:var(--rust);border-color:var(--rust);color:var(--mist)}
.btn--line{background:transparent;color:var(--cyan-deep);border-color:var(--cyan-deep)}
.btn--line:hover{background:var(--cyan-deep);color:var(--mist)}

/* ---------- 6. 布局：区带与蓝图网格 ---------- */
.band{padding:clamp(40px,6vw,88px) 0;position:relative}
.band + .band{border-top:1px solid var(--line)}
.band--tint{background:var(--paper-2)}
.band--dark{
  background-color:var(--midnight);
  background-image:
    linear-gradient(to right,rgba(251,249,244,.045) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(251,249,244,.045) 1px,transparent 1px);
  background-size:44px 44px,44px 44px;
  color:var(--mist);
  border-top:0;
}
.band--dark + .band{border-top:0}
.band--dark h1,.band--dark h2,.band--dark h3,.band--dark h4{color:var(--mist)}
.band--dark p{color:rgba(251,249,244,.82)}
.band--dark a{color:var(--cyan)}

.page-head{padding:clamp(28px,4vw,56px) 0 clamp(20px,3vw,36px);border-bottom:1px solid var(--line)}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2.2vw,28px)}
.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}

@media (max-width:900px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-4,.col-5,.col-6{grid-column:span 6}
  .col-7,.col-8,.col-12{grid-column:1 / -1}
}
@media (max-width:620px){
  .grid-12{grid-template-columns:minmax(0,1fr)}
  .col-4,.col-5,.col-6,.col-7,.col-8,.col-12{grid-column:1 / -1}
}

/* ---------- 7. 文字与索引组件 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  margin:0 0 12px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase;color:var(--rust);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor}
.band--dark .eyebrow{color:var(--cyan)}

.section-number{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--slate)}
.band--dark .section-number{color:var(--gold)}

.rule{height:1px;border:0;margin:0;background:var(--line)}
.band--dark .rule{background:var(--line-dark)}

.prose{max-width:68ch}
.prose p,.prose li{font-size:17px;line-height:1.75}
.prose ul{list-style:disc;padding-left:1.2em}
.prose ol{list-style:decimal;padding-left:1.4em}
.prose li{margin-bottom:.4em}
.prose h2,.prose h3{margin:2em 0 .6em}
.band--dark .prose a{color:var(--cyan)}

.breadcrumb{padding:14px 0;font-size:12px;letter-spacing:.06em;color:var(--slate)}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px 0}
.breadcrumb li{display:flex;align-items:center}
.breadcrumb li + li::before{content:"/";margin:0 10px;color:var(--line)}
.breadcrumb a{color:var(--cyan-deep);text-decoration:none}
.breadcrumb a:hover{text-decoration:underline}
.band--dark .breadcrumb,.band--dark .breadcrumb a{color:rgba(251,249,244,.72)}

/* ---------- 8. 数据组件 ---------- */
.data-num{
  display:block;
  font-family:var(--font-mono);font-weight:700;
  font-size:clamp(40px,7vw,84px);line-height:.95;letter-spacing:-.02em;
  color:var(--ink);
}
.band--dark .data-num{color:var(--cyan)}
.data-unit{display:block;margin-top:6px;font-size:12px;letter-spacing:.08em;color:var(--slate)}
.band--dark .data-unit{color:rgba(251,249,244,.6)}

.meter{position:relative;height:6px;background:var(--paper-2);border:1px solid var(--line);overflow:hidden}
.band--dark .meter{background:rgba(251,249,244,.10);border-color:var(--line-dark)}
.meter__fill{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--cyan-deep),var(--cyan));
  transform:scaleX(var(--v,0));transform-origin:left center;
  transition:transform .6s ease;
}
.band--dark .meter__fill{background:linear-gradient(90deg,var(--cyan),var(--magenta))}

.table-index{font-size:14px}
.table-index caption{
  text-align:left;padding-bottom:8px;
  font-size:12px;letter-spacing:.08em;color:var(--slate);
}
.table-index th,.table-index td{
  text-align:left;vertical-align:top;
  padding:10px 12px;border-bottom:1px solid var(--line);
}
.table-index thead th{
  font-family:var(--font-mono);font-size:11px;font-weight:500;
  letter-spacing:.1em;color:var(--slate);
  border-bottom:1px solid var(--ink);
}
.table-index tbody tr:nth-child(even){background:var(--paper-2)}
.table-index .num{font-family:var(--font-mono);letter-spacing:.02em}
.band--dark .table-index th,.band--dark .table-index td{border-color:var(--line-dark)}
.band--dark .table-index thead th{color:var(--cyan);border-color:rgba(18,227,209,.44)}
.band--dark .table-index tbody tr:nth-child(even){background:rgba(251,249,244,.05)}
.band--dark .table-index caption{color:rgba(251,249,244,.6)}

.tag{
  display:inline-block;padding:3px 8px;
  font-size:11px;letter-spacing:.08em;
  border:1px solid currentColor;border-radius:var(--radius);
  color:var(--cyan-deep);background:rgba(11,124,116,.08);
}
.tag--cyan{color:var(--cyan-deep);background:rgba(18,227,209,.10)}
.tag--gold{color:#7A5A1C;background:rgba(216,166,74,.18)}
.tag--magenta{color:#B3135F;background:rgba(255,61,139,.12)}
.band--dark .tag{color:var(--cyan);background:rgba(18,227,209,.10)}
.band--dark .tag--gold{color:var(--gold);background:rgba(216,166,74,.14)}
.band--dark .tag--magenta{color:var(--magenta);background:rgba(255,61,139,.14)}

.panel{
  padding:clamp(18px,2.4vw,28px);
  background:var(--midnight);color:var(--mist);
  border:1px solid rgba(18,227,209,.28);border-radius:var(--radius);
}
.panel p{color:rgba(251,249,244,.82)}
.panel__title{font-family:var(--font-serif);font-size:20px;margin:0 0 10px;color:var(--mist)}
.panel--paper{background:var(--paper-2);color:var(--ink);border-color:var(--line)}
.panel--paper p{color:var(--ink)}
.panel--paper .panel__title{color:var(--ink)}

/* ---------- 9. 图像容器 ---------- */
.figure{
  position:relative;margin:0;overflow:hidden;
  background-color:var(--midnight);
  background-image:linear-gradient(135deg,rgba(18,227,209,.20),rgba(255,61,139,.16) 55%,rgba(216,166,74,.18));
  border:1px solid var(--line);border-radius:var(--radius);
}
.figure img{width:100%;height:100%;object-fit:cover;display:block}
.figure--16x9{aspect-ratio:16 / 9}
.figure--4x3{aspect-ratio:4 / 3}
.figure--1x1{aspect-ratio:1 / 1}
.figure--4x5{aspect-ratio:4 / 5}
.figure--21x9{aspect-ratio:21 / 9}
.figure__caption{
  position:absolute;left:0;right:0;bottom:0;
  padding:10px 12px;
  background:linear-gradient(to top,rgba(11,9,8,.88),rgba(11,9,8,0));
  color:var(--mist);font-size:12px;letter-spacing:.04em;
}

/* ---------- 10. 页脚 ---------- */
.site-foot{
  position:relative;
  background-color:var(--midnight);
  background-image:
    linear-gradient(to right,rgba(251,249,244,.05) 1px,transparent 1px),
    linear-gradient(to bottom,rgba(251,249,244,.05) 1px,transparent 1px);
  background-size:44px 44px,44px 44px;
  color:var(--mist);
  border-top:1px solid rgba(18,227,209,.26);
}
.foot__inner{
  width:100%;max-width:var(--shell-max);
  margin:0 auto;
  padding:clamp(32px,5vw,64px) var(--gutter) 20px;
}
.foot__grid{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,2fr) minmax(0,1.25fr);
  gap:clamp(20px,3vw,44px);
}
.foot__mark{font-family:var(--font-serif);font-size:24px;font-weight:800;margin:0 0 8px;color:var(--mist)}
.foot__line{
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--cyan);
}
.foot__summary{font-size:14px;line-height:1.7;color:rgba(251,249,244,.72);max-width:44ch}
.foot__cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
.foot__title{
  margin:0 0 12px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.12em;color:var(--gold);
}
.foot__list{display:flex;flex-direction:column;gap:9px}
.foot__link{
  color:rgba(251,249,244,.82);text-decoration:none;font-size:13.5px;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.foot__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.foot__contact{font-size:13.5px;line-height:1.8;color:rgba(251,249,244,.8)}
.foot__contact p{margin:0 0 8px}
.foot__copy{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.foot__mail{font-family:var(--font-mono);font-size:13px;color:var(--cyan);word-break:break-all}
.foot__note{color:var(--slate);font-size:12px;line-height:1.7}
.foot__base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  margin-top:clamp(24px,4vw,44px);padding-top:16px;
  border-top:1px solid rgba(251,249,244,.14);
  font-size:12px;color:var(--slate);
}
.foot__legal{margin:0;font-family:var(--font-mono);letter-spacing:.04em}

.copy-btn{
  padding:6px 10px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.06em;
  color:var(--cyan);background:transparent;
  border:1px solid rgba(18,227,209,.5);border-radius:var(--radius);
  transition:background-color .18s ease;
}
.copy-btn:hover{background:rgba(18,227,209,.12)}
.copy-status{font-size:12px;color:var(--gold)}

.to-top{
  position:fixed;right:18px;bottom:18px;z-index:70;
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.08em;
  color:var(--cyan);background:var(--midnight);
  border:1px solid var(--cyan);border-radius:var(--radius);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .22s ease,transform .22s ease,visibility .22s;
}
.to-top.is-on{opacity:1;visibility:visible;transform:none}
.to-top:hover{background:rgba(18,227,209,.14)}

/* ---------- 11. 显现动效 ---------- */
html[data-reveal-ready="true"] [data-reveal]{opacity:0;transform:translateY(10px)}
html[data-reveal-ready="true"] [data-reveal].is-visible{
  opacity:1;transform:none;
  transition:opacity .55s ease,transform .55s ease;
}

/* ---------- 12. 移动端：顶部条 + 抽屉 ---------- */
@media (max-width:900px){
  body{padding-top:64px}
  body.has-drawer{overflow:hidden}

  .site-rail{
    top:0;left:0;right:0;bottom:auto;
    width:auto;height:64px;
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;padding:0 16px;
    background-image:none;
    border-right:0;border-bottom:1px solid rgba(18,227,209,.26);
  }
  .rail__brand{flex:1 1 auto;min-width:0;padding:0;border-bottom:0}
  .brand{display:flex;align-items:center;gap:10px}
  .brand__mark{width:32px;height:22px;margin:0;flex:none;font-size:11px}
  .brand__name{font-size:14px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand__line{display:none}

  .rail__toggle{
    display:inline-flex;align-items:center;gap:8px;flex:none;
    padding:9px 11px;
    color:var(--mist);
    border:1px solid rgba(251,249,244,.30);border-radius:var(--radius);
  }
  .rail__toggle-bars{
    position:relative;display:block;width:16px;height:10px;
    border-top:1px solid var(--cyan);border-bottom:1px solid var(--cyan);
  }
  .rail__toggle-bars::after{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:var(--cyan)}
  .site-rail[data-open="true"] .rail__toggle{color:var(--cyan);border-color:var(--cyan);background:rgba(18,227,209,.10)}

  .rail__nav{
    position:absolute;top:64px;left:0;right:0;
    display:none;flex-direction:column;
    max-height:calc(100vh - 64px);
    padding:14px 16px 18px;
    background-color:var(--midnight);
    background-image:linear-gradient(to bottom,rgba(18,227,209,.06) 1px,transparent 1px);
    background-size:100% 44px;
    border-bottom:1px solid rgba(18,227,209,.30);
    overflow-y:auto;
  }
  .site-rail[data-open="true"] .rail__nav{display:flex}
  .rail__kicker{color:var(--cyan)}
  .rail__item{border-top:1px solid rgba(251,249,244,.12)}
  .rail__link{padding:12px 10px}
  .rail__link::before{top:10px;bottom:10px}
  .rail__idx{display:inline-block;margin:0 10px 0 0;vertical-align:middle}
  .rail__label{display:inline-block;font-size:15px;letter-spacing:.04em}
  .rail__foot{
    flex-direction:row;gap:10px;margin-top:16px;padding-top:16px;
  }
  .rail__cta{flex:1 1 0;padding:11px 8px;font-size:13px}

  .rail__progress{top:auto;left:0;right:0;bottom:-1px;width:auto;height:2px}
  .rail__progress-bar{
    background:linear-gradient(to right,var(--cyan),var(--magenta));
    transform:scaleX(var(--p,0));transform-origin:left center;
  }

  .foot__grid{grid-template-columns:minmax(0,1fr)}
  .foot__cols{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:520px){
  .foot__cols{grid-template-columns:minmax(0,1fr)}
  .to-top{right:12px;bottom:12px}
}

/* ---------- 13. 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;
  }
  html[data-reveal-ready="true"] [data-reveal]{opacity:1;transform:none}
}