/* ==========================================================================
   万博在线登录 · 共享样式表  /assets/site.css
   语汇：数字档案室 + 赛事控制台 —— 极细边界、编号锚点、分区色语言
   ========================================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,blockquote,dl,dd,hr{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
hr{border:0}

/* ---------- 2. 设计变量 ---------- */
:root{
  /* 矿物色 · 档案基底 */
  --ink:#07090C;
  --ink-2:#0B0F14;
  --panel:#10141A;
  --panel-2:#141922;
  --line:#1B2129;
  --line-strong:#28313C;
  --fg:#F4F2EC;
  --silver:#C7CED8;
  --stone:#8A939E;
  /* 分区强调色 */
  --green:#00C46A;
  --green-soft:rgba(0,196,106,.10);
  --amber:#F5B041;
  --amber-soft:rgba(245,176,65,.10);
  --violet:#5E6AD2;
  --violet-soft:rgba(94,106,210,.12);
  --clay:#C0704F;
  --clay-soft:rgba(192,112,79,.10);

  --font-sans:"Source Han Sans SC","Noto Sans SC","Alibaba PuHuiTi","PingFang SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1280px;
  --gutter:clamp(16px,4vw,40px);
  --radius:6px;
  --radius-sm:4px;

  --ease:cubic-bezier(.4,0,.2,1);
  --speed:.18s;
}

/* ---------- 3. 基础排版：公告—清单—细则三级节奏 ---------- */
body{
  background:var(--ink);
  color:var(--fg);
  font-family:var(--font-sans);
  font-size:16px;
  font-weight:400;
  line-height:1.85;
  letter-spacing:.005em;
  min-height:100vh;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
}

h1,h2,h3,h4{font-weight:800;letter-spacing:-.02em;line-height:1.3;text-wrap:balance}
h1{font-size:clamp(30px,4.4vw,40px)}
h2{font-size:clamp(22px,2.7vw,26px)}
h3{font-size:18px;line-height:1.45}
h4{font-size:16px;line-height:1.5}
p{max-width:74ch}
strong,b{font-weight:800}
small{font-size:12.5px;line-height:1.7}

::selection{background:rgba(0,196,106,.28);color:var(--fg)}

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

/* ---------- 4. 布局容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.skip-link{
  position:fixed;
  top:8px;left:8px;z-index:200;
  padding:10px 16px;
  border-radius:var(--radius-sm);
  background:var(--green);
  color:#03180E;
  font-size:14px;font-weight:800;line-height:1.4;
  transform:translateY(-190%);
  transition:transform .2s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ---------- 5. 站点头部：双层信息导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(7,9,12,.94);
  backdrop-filter:saturate(140%) blur(12px);
  -webkit-backdrop-filter:saturate(140%) blur(12px);
  border-bottom:1px solid var(--line);
}

.scroll-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  z-index:2;pointer-events:none;background:transparent;
}
.scroll-progress__bar{
  display:block;height:100%;width:0;
  background:linear-gradient(90deg,var(--green) 0%,var(--green) 52%,var(--amber) 100%);
}

.header__bar{
  display:flex;align-items:center;
  gap:clamp(12px,1.8vw,24px);
  min-height:84px;
  padding-block:12px;
}

/* 品牌字标 */
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;min-width:0}
.brand__mark{
  display:flex;align-items:flex-end;gap:3px;
  width:30px;height:30px;padding:6px;flex:0 0 auto;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:linear-gradient(150deg,rgba(0,196,106,.16),rgba(0,196,106,0) 68%);
}
.brand__mark i{display:block;flex:1 1 0;border-radius:1px;background:var(--green)}
.brand__mark i:nth-child(1){height:36%;opacity:.5}
.brand__mark i:nth-child(2){height:100%;opacity:.85}
.brand__mark i:nth-child(3){height:64%;background:var(--amber)}
.brand__text{display:flex;flex-direction:column;gap:1px;min-width:0}
.brand__name{
  font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.35;
  white-space:nowrap;
}
.brand__line{
  font-size:11.5px;line-height:1.4;letter-spacing:.03em;
  color:var(--stone);white-space:nowrap;
}

/* 版本徽章 */
.version-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:var(--panel);
  font-family:var(--font-mono);
  font-size:12px;line-height:1.4;letter-spacing:.02em;
  color:var(--silver);white-space:nowrap;
}
.version-badge__dot{
  width:6px;height:6px;flex:0 0 auto;border-radius:50%;
  background:var(--green);
  box-shadow:0 0 0 3px rgba(0,196,106,.14);
  animation:badgePulse 2.6s ease-in-out infinite;
}
@keyframes badgePulse{
  0%,100%{box-shadow:0 0 0 3px rgba(0,196,106,.14);opacity:1}
  50%{box-shadow:0 0 0 8px rgba(0,196,106,0);opacity:.7}
}
.version-badge__value{font-family:var(--font-mono);font-weight:700;color:var(--amber)}
.version-badge__sep{color:var(--line-strong)}
.version-badge__note{color:var(--stone)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:10px 18px;
  border:1px solid transparent;
  border-radius:var(--radius-sm);
  font-size:14px;font-weight:700;line-height:1.4;letter-spacing:.01em;
  white-space:nowrap;cursor:pointer;
  transition:background-color var(--speed) var(--ease),
             color var(--speed) var(--ease),
             border-color var(--speed) var(--ease),
             transform var(--speed) var(--ease);
}
.btn--green{background:var(--green);border-color:var(--green);color:#03180E}
.btn--green:hover{background:#12D97C;border-color:#12D97C;transform:translateY(-1px)}
.btn--amber{background:var(--amber);border-color:var(--amber);color:#2A1A02}
.btn--amber:hover{background:#FFC35C;border-color:#FFC35C;transform:translateY(-1px)}
.btn--ghost{background:var(--panel);border-color:var(--line);color:var(--silver)}
.btn--ghost:hover{border-color:var(--green);color:var(--fg);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.header__cta{margin-left:auto}

/* 移动端栏目按钮 */
.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  background:var(--panel);
  color:var(--silver);
  font-size:13px;font-weight:700;letter-spacing:.04em;line-height:1.4;
  transition:border-color var(--speed) var(--ease),color var(--speed) var(--ease);
}
.nav-toggle:hover{border-color:var(--green);color:var(--fg)}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars i{
  display:block;height:2px;border-radius:1px;background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease);
}
.nav-toggle[aria-expanded="true"]{border-color:var(--green);color:var(--fg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:last-child{transform:translateY(-3px) rotate(-45deg)}

/* 栏目导航条 */
.site-nav{
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(16,20,26,.6),rgba(7,9,12,0));
}
.site-nav__inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
}
.site-nav__list{display:flex;align-items:center;gap:2px;min-width:0}
.site-nav__list a{
  position:relative;display:block;
  padding:15px 15px 13px;
  font-size:14.5px;line-height:1.4;color:var(--silver);
  white-space:nowrap;
  border-bottom:2px solid transparent;
  transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease),
             background-color var(--speed) var(--ease);
}
.site-nav__list a:hover{color:var(--fg)}
.site-nav__list a[aria-current="page"]{
  color:var(--fg);
  font-weight:800;
  border-bottom-color:var(--green);
}
.site-nav__alt{
  flex:0 0 auto;
  padding:6px 0;
  font-family:var(--font-mono);
  font-size:12px;line-height:1.5;letter-spacing:.05em;
  color:var(--amber);
  border-bottom:1px dashed rgba(245,176,65,.42);
  transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease);
}
.site-nav__alt:hover{color:#FFC35C;border-bottom-color:#FFC35C}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,120px);
  padding-block:clamp(40px,5vw,60px) 28px;
  border-top:1px solid var(--line);
  background:
    radial-gradient(120% 140% at 0% 0%,rgba(0,196,106,.06),transparent 58%),
    radial-gradient(90% 120% at 100% 0%,rgba(245,176,65,.05),transparent 60%),
    var(--ink-2);
}

.footer__top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.5fr);
  gap:40px clamp(32px,5vw,72px);
  padding-bottom:36px;
  border-bottom:1px solid var(--line);
}
.footer__brand-name{
  font-size:19px;font-weight:800;letter-spacing:-.01em;line-height:1.4;
}
.footer__brand-line{
  margin-top:10px;max-width:36ch;
  font-size:14px;line-height:1.8;color:var(--silver);
}
.footer__consistency{
  margin-top:14px;max-width:40ch;
  padding-left:12px;
  border-left:2px solid var(--line-strong);
  font-size:12.5px;line-height:1.8;color:var(--stone);
}

.footer__nav{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:28px}
.footer__col-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:700;line-height:1.4;
  letter-spacing:.16em;text-transform:uppercase;
  color:var(--stone);
}
.footer__links li+li{margin-top:9px}
.footer__links a{
  font-size:14px;line-height:1.6;color:var(--silver);
  transition:color var(--speed) var(--ease);
}
.footer__links a:hover{color:var(--green)}

.footer__contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:24px 32px;
  padding-block:32px;
  border-bottom:1px solid var(--line);
}
.footer__contact-item--wide{grid-column:1/-1}
.footer__contact-label{
  margin-bottom:7px;
  font-family:var(--font-mono);
  font-size:11px;line-height:1.4;letter-spacing:.14em;text-transform:uppercase;
  color:var(--stone);
}
.footer__contact-value{
  font-size:14.5px;font-weight:700;line-height:1.65;color:var(--fg);
}
.footer__note{
  max-width:72ch;
  font-size:12.5px;line-height:1.85;color:var(--stone);
}

.footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;
  gap:8px 28px;
  padding-top:24px;
  font-family:var(--font-mono);
  font-size:12.5px;line-height:1.7;letter-spacing:.02em;
  color:var(--stone);
}
.footer__legal-item{word-break:break-word}

/* 返回顶部 */
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:95;
  display:inline-flex;align-items:center;gap:8px;
  padding:10px 16px;
  border:1px solid var(--line-strong);
  border-radius:999px;
  background:rgba(16,20,26,.95);
  backdrop-filter:blur(8px);
  -webkit-backdrop-filter:blur(8px);
  color:var(--silver);
  font-family:var(--font-mono);
  font-size:12px;line-height:1.4;letter-spacing:.06em;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),
             visibility .24s,border-color var(--speed) var(--ease),
             color var(--speed) var(--ease);
}
.to-top::before{content:"\2191";font-size:13px;line-height:1;color:var(--green)}
.to-top[data-visible]{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{border-color:var(--green);color:var(--fg)}

/* ---------- 7. 页面容器与通用组件 ---------- */
.main{
  display:block;
  padding-block:clamp(32px,4.5vw,56px) clamp(40px,5vw,72px);
}
#main-content{scroll-margin-top:150px}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-mono);
  font-size:11.5px;line-height:1.5;letter-spacing:.18em;text-transform:uppercase;
  color:var(--stone);
}
.eyebrow::before{
  content:"";display:block;width:22px;height:1px;flex:0 0 auto;
  background:var(--green);
}

.cp-chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:2px 8px;
  border:1px solid rgba(0,196,106,.32);
  border-radius:3px;
  background:var(--green-soft);
  font-family:var(--font-mono);
  font-size:11.5px;font-weight:700;line-height:1.7;letter-spacing:.06em;
  color:var(--green);white-space:nowrap;
}
.cp-chip--amber{border-color:rgba(245,176,65,.34);background:var(--amber-soft);color:var(--amber)}
.cp-chip--violet{border-color:rgba(94,106,210,.36);background:var(--violet-soft);color:#93A0F0}
.cp-chip--clay{border-color:rgba(192,112,79,.36);background:var(--clay-soft);color:#D98864}

.panel{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:0 1px 0 rgba(255,255,255,.02), 0 14px 30px -24px rgba(0,0,0,.92);
}
.panel--pad{padding:clamp(20px,3vw,32px)}

.rule{height:1px;border:0;background:var(--line);margin-block:clamp(24px,3vw,36px)}

.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.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))}

.breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);
  font-size:12px;line-height:1.6;letter-spacing:.04em;
  color:var(--stone);
}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"\FF0F";color:var(--line-strong)}
.breadcrumb a{color:var(--stone);transition:color var(--speed) var(--ease)}
.breadcrumb a:hover{color:var(--green)}
.breadcrumb [aria-current="page"]{color:var(--silver)}

.prose{max-width:74ch;font-size:16.5px;line-height:1.9;color:var(--silver)}
.prose p+p{margin-top:1.2em}
.prose strong{color:var(--fg)}
.prose ul{display:grid;gap:10px;margin-top:1em}
.prose li{position:relative;padding-left:20px}
.prose li::before{
  content:"";position:absolute;left:2px;top:.78em;
  width:7px;height:1px;background:var(--green);
}

/* 图片容器（页面阶段放置 <img> 或留作占位） */
.figure{
  position:relative;isolation:isolate;overflow:hidden;
  border:1px solid var(--line);
  border-radius:var(--radius);
  background:linear-gradient(180deg,rgba(255,255,255,.02),rgba(0,0,0,.14)),var(--panel);
}
.figure > img,.figure > picture,.figure > picture > img,.figure > svg{
  width:100%;height:100%;object-fit:cover;display:block;
}
.figure::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);
  background-size:34px 34px;
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
  mask-image:linear-gradient(180deg,rgba(0,0,0,.9),transparent 82%);
}
.figure--16x9{aspect-ratio:16/9}
.figure--4x3{aspect-ratio:4/3}
.figure--1x1{aspect-ratio:1/1}
.figure--21x9{aspect-ratio:21/9}
.figure--tall{aspect-ratio:3/4}
.figure--empty{display:grid;place-items:center;min-height:180px}
.figure--empty::before{
  content:attr(data-label);
  font-family:var(--font-mono);
  font-size:11.5px;line-height:1.6;letter-spacing:.16em;text-transform:uppercase;
  color:var(--stone);
}

/* 可折叠编号矩阵 */
[data-collapse-panel]{
  display:grid;
  grid-template-rows:0fr;
  transition:grid-template-rows .26s var(--ease);
}
[data-collapse-panel] > *{min-height:0;overflow:hidden}
[data-collapse-panel][data-open]{grid-template-rows:1fr}

/* 侧边目录跟随 */
[data-toc-link]{transition:color var(--speed) var(--ease),border-color var(--speed) var(--ease)}
[data-toc-link][aria-current="true"]{
  color:var(--fg);
  border-left-color:var(--green);
}

/* ---------- 8. 响应式 ---------- */
@media (max-width:1100px){
  .header__cta{display:none}
  .site-nav__list a{padding-inline:12px}
}

@media (max-width:900px){
  .header__bar{min-height:68px;gap:10px;padding-block:10px}
  .version-badge{margin-left:auto;padding:6px 11px;font-size:11.5px}
  .version-badge__label,
  .version-badge__sep,
  .version-badge__note{display:none}
  .nav-toggle{display:inline-flex}

  .site-nav{
    display:grid;
    grid-template-rows:0fr;
    visibility:hidden;
    border-top-color:transparent;
    background:none;
    transition:grid-template-rows .28s var(--ease),visibility .28s var(--ease),
               border-color .28s var(--ease);
  }
  .site-nav[data-open]{
    grid-template-rows:1fr;
    visibility:visible;
    border-top:1px solid var(--line);
    background:linear-gradient(180deg,rgba(16,20,26,.85),rgba(7,9,12,.2));
  }
  .site-nav__inner{
    min-height:0;overflow:hidden;
    flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;
  }
  .site-nav__list{
    flex-direction:column;align-items:stretch;gap:0;
    padding-block:6px 10px;
  }
  .site-nav__list a{
    padding:14px 14px 14px 16px;
    font-size:15px;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
  }
  .site-nav__list a:hover{background:rgba(255,255,255,.025)}
  .site-nav__list a[aria-current="page"]{
    border-bottom-color:var(--line);
    border-left-color:var(--green);
    background:var(--green-soft);
  }
  .site-nav__alt{
    display:block;
    margin:4px 0 18px;
    padding:12px 14px;
    border:1px solid rgba(245,176,65,.35);
    border-radius:var(--radius-sm);
    text-align:center;
  }
}

@media (max-width:1024px){
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer__top{grid-template-columns:minmax(0,1fr);gap:34px}
}

@media (max-width:720px){
  body{font-size:15.5px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr)}
  .footer__nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
  .footer__contact{padding-block:28px}
  .to-top{padding:9px 13px;font-size:11.5px}
}

@media (max-width:480px){
  .brand__line{display:none}
  .brand__name{font-size:15.5px}
  .brand__mark{width:28px;height:28px;padding:5px}
  .footer__nav{grid-template-columns:minmax(0,1fr);gap:22px}
  .footer__legal{gap:6px 18px}
}

/* ---------- 9. 动效降级 ---------- */
@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,.btn--green:hover,.btn--amber:hover,.btn--ghost:hover{transform:none}
  .to-top[data-visible]{transform:none}
}