/* =========================================================
   AOA赛事指南 · 共享样式 /assets/site.css
   夜场战术板：蓝图网格 · 节奏轴 · 矿物色系
   ========================================================= */

/* ---------- 变量 ---------- */
:root{
  --aoa-night:#0B1F2A;
  --aoa-moss-deep:#10281F;
  --aoa-board:#071319;
  --aoa-moss:#2C4A3B;
  --aoa-mist:#A9B4AF;
  --aoa-cream:#F1EEE3;
  --aoa-rock:#6E7A76;
  --aoa-mint:#3BE0B0;
  --aoa-amber:#F0A24B;
  --aoa-violet:#5E6BE0;
  --aoa-clay:#B9674A;

  --aoa-hairline:rgba(110,122,118,.42);
  --aoa-hairline-soft:rgba(110,122,118,.16);
  --aoa-grid-line:rgba(110,122,118,.09);

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

  --aoa-shell:1280px;
  --aoa-gutter:clamp(16px,4vw,40px);
  --aoa-header-h:76px;
  --aoa-tick:26px;
  --aoa-ease:160ms ease-out;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;min-height:100%}
img,svg{max-width:100%;height:auto;display:block}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
a{color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--aoa-mint);outline-offset:3px}

/* ---------- 基座排版 ---------- */
body{
  background-color:var(--aoa-night);
  background-image:
    radial-gradient(900px 520px at 10% -10%, rgba(59,224,176,.10), transparent 70%),
    radial-gradient(820px 480px at 98% 2%, rgba(94,107,224,.13), transparent 72%),
    linear-gradient(var(--aoa-grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--aoa-grid-line) 1px, transparent 1px);
  background-size:auto,auto,96px 96px,96px 96px;
  color:var(--aoa-cream);
  font-family:var(--aoa-display);
  font-size:16.5px;
  line-height:1.75;
  font-weight:400;
}
h1,h2,h3,h4{font-family:var(--aoa-display);font-weight:800;letter-spacing:-.02em;line-height:1.2;margin:0 0 .5em}
h1{font-size:clamp(2.4rem,5vw,4rem)}
h2{font-size:clamp(1.55rem,3vw,2.2rem)}
h3{font-size:clamp(1.1rem,1.8vw,1.35rem)}
strong{font-weight:700}
::selection{background:var(--aoa-mint);color:var(--aoa-board)}

/* ---------- 通用容器 ---------- */
.aoa-shell{width:100%;max-width:var(--aoa-shell);margin-inline:auto;padding-inline:var(--aoa-gutter)}
.aoa-prose{max-width:68ch}
.aoa-prose p{margin:0 0 1.05em}
.aoa-prose p:last-child{margin-bottom:0}
.aoa-prose a{color:var(--aoa-mint);text-decoration:none;border-bottom:1px solid rgba(59,224,176,.38);transition:border-color var(--aoa-ease),color var(--aoa-ease)}
.aoa-prose a:hover{border-bottom-color:var(--aoa-mint);color:#5ff0c4}

/* ---------- 网格 ---------- */
.aoa-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(14px,2vw,26px);
}
.aoa-span-4{grid-column:span 4}
.aoa-span-5{grid-column:span 5}
.aoa-span-6{grid-column:span 6}
.aoa-span-7{grid-column:span 7}
.aoa-span-8{grid-column:span 8}
.aoa-span-12{grid-column:span 12}
@media (max-width:900px){
  .aoa-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  [class*="aoa-span-"]{grid-column:span 6}
}
@media (max-width:560px){
  .aoa-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  [class*="aoa-span-"]{grid-column:span 2}
}

/* ---------- 标签 / 数字锚点 ---------- */
.aoa-label{
  display:inline-block;
  font-family:var(--aoa-mono);
  font-size:12px;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--aoa-mist);
}
.aoa-figure{
  display:block;
  font-family:var(--aoa-mono);
  font-weight:700;
  font-size:clamp(3rem,7vw,4.6rem);
  line-height:1;
  letter-spacing:-.02em;
  color:var(--aoa-mint);
}
.aoa-figure__unit{
  font-size:.28em;
  font-weight:500;
  letter-spacing:.08em;
  color:var(--aoa-mist);
  margin-left:.08em;
}

/* ---------- 章节标题（左侧阶段色块） ---------- */
.aoa-section-title{
  display:flex;
  align-items:baseline;
  gap:12px;
  margin:0 0 18px;
  font-size:clamp(1.4rem,2.6vw,2rem);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.28;
}
.aoa-section-title::before{
  content:"";
  flex:0 0 4px;
  align-self:stretch;
  min-height:1.05em;
  background:var(--aoa-mint);
}
.aoa-section-title--venue::before{background:var(--aoa-moss)}
.aoa-section-title--flow::before{background:var(--aoa-amber)}
.aoa-section-title--clause::before{background:var(--aoa-clay)}

/* ---------- 按钮 ---------- */
.aoa-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:12px 20px;
  font-family:var(--aoa-display);
  font-size:.95rem;
  font-weight:600;
  letter-spacing:.02em;
  text-decoration:none;
  border:1px solid transparent;
  transition:background var(--aoa-ease),color var(--aoa-ease),border-color var(--aoa-ease);
}
.aoa-btn--amber{color:var(--aoa-amber);border-color:rgba(240,162,75,.6);background:rgba(240,162,75,.06)}
.aoa-btn--amber:hover{background:var(--aoa-amber);border-color:var(--aoa-amber);color:var(--aoa-board)}
.aoa-btn--mint{background:var(--aoa-mint);border-color:var(--aoa-mint);color:var(--aoa-board)}
.aoa-btn--mint:hover{background:#2ec79b;border-color:#2ec79b}
.aoa-btn--ghost{color:var(--aoa-cream);border-color:var(--aoa-hairline)}
.aoa-btn--ghost:hover{border-color:var(--aoa-mint);color:var(--aoa-mint)}
.aoa-btn--sm{padding:8px 14px;font-size:.84rem}

/* ---------- 面包屑 ---------- */
.aoa-crumbs{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:0 0 22px;
  font-family:var(--aoa-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--aoa-rock);
}
.aoa-crumbs li{display:flex;align-items:center;gap:10px}
.aoa-crumbs li::after{content:"/";color:var(--aoa-rock)}
.aoa-crumbs li:last-child::after{content:""}
.aoa-crumbs a{color:var(--aoa-mist);text-decoration:none;border-bottom:1px solid transparent;transition:color var(--aoa-ease),border-color var(--aoa-ease)}
.aoa-crumbs a:hover{color:var(--aoa-mint);border-bottom-color:var(--aoa-mint)}
.aoa-crumbs [aria-current="page"]{color:var(--aoa-cream)}

/* ---------- 面板 / 卡片 ---------- */
.aoa-panel{
  background:var(--aoa-moss-deep);
  border:1px solid var(--aoa-hairline);
  padding:clamp(18px,2.4vw,28px);
  transition:border-color var(--aoa-ease);
}
.aoa-panel:hover{border-color:rgba(59,224,176,.5)}
.aoa-panel--board{background:var(--aoa-board)}
.aoa-panel--moss{background:var(--aoa-moss)}

/* ---------- 过滤胶囊 ---------- */
.aoa-chip{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:7px 13px;
  font-family:var(--aoa-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--aoa-mist);
  background:transparent;
  border:1px solid var(--aoa-hairline);
  transition:color var(--aoa-ease),border-color var(--aoa-ease),background var(--aoa-ease);
}
.aoa-chip:hover{border-color:var(--aoa-mint);color:var(--aoa-cream)}
.aoa-chip[aria-pressed="true"],.aoa-chip.is-active{background:var(--aoa-mint);border-color:var(--aoa-mint);color:var(--aoa-board)}

/* ---------- 节奏轴 ---------- */
.aoa-axis{
  position:relative;
  height:clamp(30px,4vw,46px);
  margin:clamp(28px,5vw,56px) 0;
  border-top:1px solid var(--aoa-hairline);
  background-image:repeating-linear-gradient(90deg,var(--aoa-hairline) 0 1px,transparent 1px 32px);
}
.aoa-axis::before{
  content:"";
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,transparent,rgba(59,224,176,.14),transparent);
  pointer-events:none;
}

/* ---------- 图片容器（页面阶段放 img） ---------- */
.aoa-media{
  position:relative;
  display:block;
  overflow:hidden;
  background:var(--aoa-board);
  border:1px solid var(--aoa-hairline);
}
.aoa-media img{width:100%;height:100%;object-fit:cover;object-position:center}
.aoa-media--wide{aspect-ratio:16/9}
.aoa-media--photo{aspect-ratio:3/2}
.aoa-media--square{aspect-ratio:1/1}
.aoa-media--tall{aspect-ratio:3/4}
.aoa-media__cap{
  position:absolute;
  left:0;
  bottom:0;
  max-width:100%;
  padding:7px 12px;
  font-family:var(--aoa-mono);
  font-size:11px;
  letter-spacing:.1em;
  color:var(--aoa-cream);
  background:rgba(7,19,25,.78);
  border-top:1px solid var(--aoa-hairline);
}

/* ---------- 滚动显现 ---------- */
[data-rise]{opacity:0;transform:translateY(10px);transition:opacity 320ms ease-out,transform 320ms ease-out}
[data-rise].is-visible{opacity:1;transform:none}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:var(--aoa-gutter);
  top:-64px;
  z-index:200;
  padding:10px 16px;
  background:var(--aoa-mint);
  color:var(--aoa-board);
  font-weight:700;
  text-decoration:none;
  transition:top var(--aoa-ease);
}
.skip-link:focus{top:10px}

/* =========================================================
   头部
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,19,25,.94);
  border-bottom:1px solid var(--aoa-hairline);
  color:var(--aoa-cream);
  backdrop-filter:blur(8px);
  transition:border-color var(--aoa-ease);
}
.site-header[data-scrolled]{border-bottom-color:rgba(59,224,176,.4)}
.header-progress{
  position:absolute;
  left:0;
  bottom:0;
  height:2px;
  width:0;
  background:linear-gradient(90deg,var(--aoa-mint),var(--aoa-violet));
  transition:width 90ms linear;
}
.header-inner{
  position:relative;
  display:flex;
  align-items:center;
  gap:clamp(12px,2vw,28px);
  max-width:var(--aoa-shell);
  margin-inline:auto;
  padding:12px var(--aoa-gutter);
  min-height:var(--aoa-header-h);
}

/* 品牌签名 */
.brand-block{display:flex;flex-direction:column;gap:2px;flex:0 0 auto}
.brand-sign{display:inline-flex;align-items:baseline;gap:8px;text-decoration:none;color:var(--aoa-cream)}
.brand-sign__mark{
  font-size:1.24rem;
  font-weight:800;
  letter-spacing:.04em;
  line-height:1.1;
  transition:color var(--aoa-ease);
}
.brand-sign__mark::before{
  content:"";
  display:inline-block;
  width:6px;
  height:6px;
  margin-right:8px;
  vertical-align:2px;
  background:var(--aoa-mint);
}
.brand-sign__word{font-size:.88rem;letter-spacing:.16em;color:var(--aoa-mist)}
.brand-sign:hover .brand-sign__mark{color:var(--aoa-mint)}
.brand-ticker{
  display:flex;
  align-items:center;
  gap:7px;
  font-family:var(--aoa-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--aoa-mist);
}
.ticker-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--aoa-amber);
  box-shadow:0 0 0 3px rgba(240,162,75,.16);
  flex:0 0 auto;
}

/* 中间节奏轴刻度带 */
.rhythm-band{
  position:relative;
  flex:1 1 auto;
  min-width:60px;
  height:26px;
  background-image:repeating-linear-gradient(90deg,var(--aoa-hairline) 0 1px,transparent 1px var(--aoa-tick));
  background-position:0 50%;
  background-repeat:repeat-x;
}
.rhythm-band::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  top:50%;
  height:1px;
  background:var(--aoa-hairline-soft);
}
.rhythm-band__node{position:absolute;top:50%;width:3px;height:14px;transform:translateY(-50%);background:var(--aoa-mint)}
.rhythm-band__node--a{left:18%}
.rhythm-band__node--b{left:56%}
.rhythm-band__node--c{left:83%}
.rhythm-band__node--amber{background:var(--aoa-amber)}

/* 导航 */
.site-nav{display:flex;align-items:center;gap:clamp(12px,1.6vw,26px);flex:0 0 auto}
.nav-list{display:flex;align-items:center;gap:clamp(10px,1.5vw,22px)}
.nav-list a{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  font-size:.95rem;
  color:var(--aoa-cream);
  text-decoration:none;
  border-left:2px solid transparent;
  transition:color var(--aoa-ease);
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:-2px;
  height:2px;
  background:var(--aoa-mint);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform var(--aoa-ease);
}
.nav-list a:hover{color:var(--aoa-mint)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--aoa-mint)}
.nav-list a[aria-current="page"]::after{transform:scaleX(1);background:var(--aoa-amber)}

.nav-utility{
  display:flex;
  align-items:center;
  gap:10px;
  padding-left:clamp(10px,1.4vw,20px);
  border-left:1px solid var(--aoa-hairline);
}
.util-link{
  padding:6px 4px;
  font-family:var(--aoa-mono);
  font-size:12px;
  letter-spacing:.1em;
  color:var(--aoa-mist);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--aoa-ease),border-color var(--aoa-ease);
}
.util-link:hover{color:var(--aoa-mint);border-bottom-color:var(--aoa-mint)}
.util-cta{
  padding:7px 14px;
  font-size:.86rem;
  font-weight:600;
  letter-spacing:.04em;
  color:var(--aoa-amber);
  text-decoration:none;
  border:1px solid rgba(240,162,75,.6);
  background:rgba(240,162,75,.06);
  transition:background var(--aoa-ease),color var(--aoa-ease),border-color var(--aoa-ease);
}
.util-cta:hover{background:rgba(240,162,75,.18);border-color:var(--aoa-amber);color:var(--aoa-cream)}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:42px;
  height:38px;
  margin-left:auto;
  padding:0 10px;
  border:1px solid var(--aoa-hairline);
  transition:border-color var(--aoa-ease);
}
.nav-toggle:hover{border-color:var(--aoa-mint)}
.nav-toggle__line{display:block;height:1.5px;background:var(--aoa-cream);transition:transform var(--aoa-ease),opacity var(--aoa-ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(1){transform:translateY(5.5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__line:nth-child(3){transform:translateY(-5.5px) rotate(-45deg)}

@media (max-width:1100px){
  .rhythm-band{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    max-height:0;
    padding:0 var(--aoa-gutter);
    overflow:hidden;
    visibility:hidden;
    background:var(--aoa-moss-deep);
    border-top:1px solid var(--aoa-hairline);
    border-bottom:1px solid var(--aoa-hairline);
    box-shadow:0 20px 38px rgba(0,0,0,.4);
    transition:max-height 240ms ease-out,padding 240ms ease-out,visibility 240ms;
  }
  .site-nav[data-open]{
    max-height:78vh;
    padding:16px var(--aoa-gutter) 24px;
    overflow-y:auto;
    visibility:visible;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:0}
  .nav-list li{border-bottom:1px solid var(--aoa-hairline-soft)}
  .nav-list a{display:block;padding:15px 0 15px 10px;font-size:1.02rem}
  .nav-list a::after{display:none}
  .nav-list a:hover,.nav-list a[aria-current="page"]{border-left-color:var(--aoa-mint)}
  .nav-utility{
    flex-wrap:wrap;
    justify-content:space-between;
    gap:12px;
    margin-top:14px;
    padding:16px 0 0;
    border-left:0;
    border-top:1px solid var(--aoa-hairline-soft);
  }
  .util-cta{padding:9px 16px}
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  margin-top:clamp(48px,7vw,96px);
  background:var(--aoa-moss-deep);
  border-top:1px solid var(--aoa-hairline);
  color:var(--aoa-cream);
}
.footer-inner{
  display:grid;
  grid-template-columns:1.15fr .85fr 1.2fr;
  gap:clamp(22px,3vw,52px);
  max-width:var(--aoa-shell);
  margin-inline:auto;
  padding:clamp(32px,4vw,56px) var(--aoa-gutter) clamp(22px,3vw,34px);
}
.footer-col{display:flex;flex-direction:column;gap:14px;min-width:0}
.footer-brand{margin:0;display:flex;flex-direction:column;gap:4px}
.footer-brand__mark{font-size:1.15rem;font-weight:800;letter-spacing:-.01em;color:var(--aoa-cream)}
.footer-brand__sub{font-family:var(--aoa-mono);font-size:11px;letter-spacing:.14em;color:var(--aoa-mint)}
.footer-heading{
  margin:0;
  font-family:var(--aoa-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.12em;
  text-transform:uppercase;
  color:var(--aoa-mint);
}
.footer-list{display:flex;flex-wrap:wrap;gap:10px 22px}
.footer-list a{
  font-size:.92rem;
  color:var(--aoa-mist);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color var(--aoa-ease),border-color var(--aoa-ease);
}
.footer-list a:hover{color:var(--aoa-mint);border-bottom-color:var(--aoa-mint)}
.footer-note{margin:0;font-size:.86rem;line-height:1.72;color:var(--aoa-mist);max-width:44ch}
.footer-legal{margin:0;font-family:var(--aoa-mono);font-size:12px;letter-spacing:.06em;color:var(--aoa-rock)}
.footer-line{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:.92rem;color:var(--aoa-cream)}
.footer-copy{
  padding:4px 9px;
  font-family:var(--aoa-mono);
  font-size:11px;
  letter-spacing:.08em;
  color:var(--aoa-mist);
  border:1px solid var(--aoa-hairline);
  transition:color var(--aoa-ease),border-color var(--aoa-ease);
}
.footer-copy:hover{border-color:var(--aoa-mint);color:var(--aoa-mint)}
.footer-base{
  display:flex;
  flex-wrap:wrap;
  gap:10px 24px;
  justify-content:space-between;
  max-width:var(--aoa-shell);
  margin-inline:auto;
  padding:14px var(--aoa-gutter) 20px;
  border-top:1px solid var(--aoa-hairline-soft);
}
.footer-scale{
  height:22px;
  border-top:1px solid var(--aoa-hairline);
  background-image:repeating-linear-gradient(90deg,var(--aoa-hairline) 0 1px,transparent 1px 24px);
  margin-bottom:22px;
}
@media (max-width:900px){
  .footer-inner{grid-template-columns:1fr;gap:28px}
}

/* 回到顶部 */
.to-top{
  position:fixed;
  right:clamp(12px,2vw,26px);
  bottom:clamp(14px,2vw,26px);
  z-index:70;
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  font-family:var(--aoa-mono);
  font-size:16px;
  line-height:1;
  color:var(--aoa-mist);
  background:rgba(7,19,25,.9);
  border:1px solid var(--aoa-hairline);
  opacity:0;
  visibility:hidden;
  transform:translateY(8px);
  transition:opacity var(--aoa-ease),visibility var(--aoa-ease),transform var(--aoa-ease),border-color var(--aoa-ease),color var(--aoa-ease);
}
.to-top[data-visible]{opacity:1;visibility:visible;transform:none}
.to-top:hover{border-color:var(--aoa-mint);color:var(--aoa-mint)}

/* =========================================================
   动效克制
   ========================================================= */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-rise]{opacity:1;transform:none}
  .header-progress{transition:none}
}