/* ============================================================
   安博赛事 · /assets/site.css
   共享外壳：reset / 变量 / 排版 / 头部 / 页脚 / 通用组件
   视觉：深墨蓝底板 + 安博橙行动色 + 荧光青绿状态色 + 矿物色标签
   ============================================================ */

:root{
  --ink:#0B1220;
  --ink-2:#1A2230;
  --stone:#5C6672;
  --cream:#F4F1EA;
  --amber:#FF6A00;
  --amber-2:#FF9A3D;
  --mint:#3DF5C0;
  --moss:#5F7F6A;
  --clay:#B96A4B;
  --mist:#C9D1D9;
  --line:rgba(201,209,217,.16);
  --line-soft:rgba(201,209,217,.09);
  --shadow-lift:0 18px 40px rgba(0,0,0,.42);
  --font-head:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-data:'IBM Plex Mono','Roboto Mono','SFMono-Regular',Consolas,monospace;
  --font-serif:'Noto Serif SC','Songti SC',serif;
  --radius-s:6px;
  --radius-m:14px;
  --radius-l:26px;
  --maxw:1280px;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.68;
  color:var(--cream);
  background-color:var(--ink);
  background-image:
    radial-gradient(900px 520px at 84% -12%, rgba(255,106,0,.13), transparent 62%),
    radial-gradient(720px 460px at -8% 6%, rgba(61,245,192,.06), transparent 60%),
    linear-gradient(180deg, rgba(26,34,48,.65), rgba(11,18,32,0) 460px);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4,h5,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img{display:block;max-width:100%;height:auto}
:focus-visible{outline:2px solid var(--mint);outline-offset:3px;border-radius:3px}
::selection{background:var(--amber);color:#0B1220}

/* ---------- 中文排版与工具类 ---------- */
.display-title{
  font-family:var(--font-head);
  font-weight:900;
  font-size:clamp(2rem,4.2vw,3.5rem);
  line-height:1.1;
  letter-spacing:-.02em;
  margin:0;
}
.section-title{
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(1.5rem,2.5vw,2.4rem);
  line-height:1.18;
  letter-spacing:-.015em;
  margin:0;
}
.lede{
  max-width:62ch;
  font-size:1.03rem;
  color:var(--mist);
  line-height:1.72;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-serif);
  font-size:.82rem;
  letter-spacing:.14em;
  color:var(--amber);
  margin-bottom:14px;
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;display:inline-block}
.mono,.data-num{font-family:var(--font-data);font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.text-mist{color:var(--mist)}
.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}
.stack > * + *{margin-top:16px}

/* ---------- 容器与分区 ---------- */
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.band{position:relative;padding:clamp(48px,6vw,88px) 0}
.band--panel{background:var(--ink-2);border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.band--light{background:var(--cream);color:#16202F}
.band--light .lede,.band--light .text-mist{color:#4A5563}
.band--light .eyebrow{color:#B96A4B}
.band--light .card{background:#FFFFFF;border-color:rgba(11,18,32,.12);color:#16202F}
.band--light .card__meta{color:#5C6672}
.band--light .card:hover{border-color:rgba(255,106,0,.5)}
.band--light .table-wrap{border-color:rgba(11,18,32,.14)}
.band--light .table th{background:rgba(11,18,32,.04);color:#5C6672;border-bottom-color:rgba(11,18,32,.14)}
.band--light .table td{border-bottom-color:rgba(11,18,32,.1)}
.band--light .section-title{color:#0B1220}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:18px;
  margin-bottom:32px;
}
.section-head__text{max-width:660px}

/* ---------- 面包屑 ---------- */
.breadcrumbs{max-width:var(--maxw);margin:0 auto;padding:20px 24px 0}
.breadcrumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-size:.84rem;color:var(--mist)}
.breadcrumbs li{display:inline-flex;align-items:center;gap:6px}
.breadcrumbs li:not(:last-child)::after{content:"/";color:var(--stone);margin-left:2px}
.breadcrumbs a:hover{color:var(--mint)}
.breadcrumbs [aria-current="page"]{color:var(--cream)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:18px}
.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--bento{display:grid;gap:18px;grid-template-columns:repeat(12,minmax(0,1fr))}
.col-3{grid-column:span 3}
.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}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:12px 22px;
  border-radius:999px;
  border:1px solid transparent;
  font-family:var(--font-head);
  font-weight:700;
  font-size:.93rem;
  letter-spacing:.01em;
  transition:background-color .22s ease,color .22s ease,border-color .22s ease,transform .22s ease;
}
.btn--primary{background:var(--amber);color:#0B1220}
.btn--primary:hover{background:var(--amber-2);transform:translateY(-2px)}
.btn--ghost{border-color:rgba(201,209,217,.34);color:var(--cream)}
.btn--ghost:hover{border-color:var(--mint);color:var(--mint);transform:translateY(-2px)}
.band--light .btn--ghost{border-color:rgba(11,18,32,.3);color:#16202F}
.band--light .btn--ghost:hover{border-color:var(--amber);color:#B96A4B}

/* ---------- 标签与筛选 chips ---------- */
.chip-row{display:flex;flex-wrap:wrap;gap:8px}
.chip{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:7px 14px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(244,241,234,.04);
  font-size:.85rem;
  color:var(--mist);
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.chip:hover{border-color:var(--amber);color:var(--cream)}
.chip--active,.chip[aria-pressed="true"]{background:var(--amber);border-color:var(--amber);color:#0B1220;font-weight:700}
.tag{
  display:inline-block;
  padding:3px 10px;
  border-radius:4px;
  border:1px solid currentColor;
  font-family:var(--font-serif);
  font-size:.76rem;
  letter-spacing:.08em;
  line-height:1.6;
}
.tag--amber{color:var(--amber);background:rgba(255,106,0,.1)}
.tag--moss{color:var(--moss);background:rgba(95,127,106,.14)}
.tag--clay{color:var(--clay);background:rgba(185,106,75,.14)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  padding:22px 22px 24px;
  background:var(--ink-2);
  border:1px solid var(--line);
  border-radius:var(--radius-m);
  transition:transform .24s ease,border-color .24s ease,box-shadow .24s ease;
}
.card:hover{transform:translateY(-4px);border-color:rgba(255,106,0,.45);box-shadow:var(--shadow-lift)}
.card__head{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;margin-bottom:12px}
.card__title{font-family:var(--font-head);font-weight:700;font-size:1.12rem;line-height:1.35;letter-spacing:-.01em}
.card__meta{font-family:var(--font-data);font-size:.78rem;color:var(--stone)}
.card__body{color:var(--mist);font-size:.95rem}

/* ---------- 状态点 ---------- */
.status-dot{
  display:inline-block;
  width:8px;
  height:8px;
  border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 0 rgba(61,245,192,.55);
  animation:statusPulse 2.6s ease-in-out infinite;
  flex:0 0 auto;
}
@keyframes statusPulse{
  0%{box-shadow:0 0 0 0 rgba(61,245,192,.45)}
  70%{box-shadow:0 0 0 7px rgba(61,245,192,0)}
  100%{box-shadow:0 0 0 0 rgba(61,245,192,0)}
}

/* ---------- 图片容器（页面阶段放图） ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  border-radius:var(--radius-m);
  border:1px solid var(--line);
  background:var(--ink-2);
}
.media-frame::before{
  content:"";
  position:absolute;
  inset:0;
  background-image:
    linear-gradient(135deg, rgba(255,106,0,.14), transparent 56%),
    repeating-linear-gradient(90deg, rgba(201,209,217,.07) 0 1px, transparent 1px 52px),
    repeating-linear-gradient(0deg, rgba(201,209,217,.05) 0 1px, transparent 1px 52px);
}
.media-frame img{position:relative;z-index:1;width:100%;height:100%;object-fit:cover}
.media-frame--wide{aspect-ratio:21 / 9}
.media-frame--tall{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame__caption{
  position:relative;
  z-index:2;
  margin:0;
  padding:12px 16px;
  font-family:var(--font-serif);
  font-size:.8rem;
  color:var(--mist);
  background:linear-gradient(0deg, rgba(11,18,32,.92), rgba(11,18,32,0));
}

/* ---------- 表格 ---------- */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius-m);background:rgba(244,241,234,.02)}
.table{width:100%;border-collapse:collapse;min-width:560px;font-size:.92rem}
.table th{
  padding:12px 16px;
  text-align:left;
  font-family:var(--font-serif);
  font-weight:600;
  font-size:.79rem;
  letter-spacing:.08em;
  color:var(--mist);
  background:rgba(244,241,234,.04);
  border-bottom:1px solid var(--line);
  white-space:nowrap;
}
.table td{padding:14px 16px;border-bottom:1px solid var(--line-soft);color:var(--mist)}
.table tbody tr:last-child td{border-bottom:0}
.table tbody tr:hover td{background:rgba(61,245,192,.06);color:var(--cream)}
.table .data-num{color:var(--cream)}

/* ---------- 手风琴 ---------- */
.faq-item{border-bottom:1px solid var(--line)}
.faq-item summary{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:16px;
  padding:18px 0;
  font-family:var(--font-head);
  font-weight:600;
  font-size:1.02rem;
  cursor:pointer;
  list-style:none;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";font-family:var(--font-data);color:var(--amber);font-size:1.1rem;line-height:1}
.faq-item[open] summary::after{content:"−";color:var(--mint)}
.faq-item__body{padding:0 0 20px;color:var(--mist);font-size:.95rem;max-width:74ch}

/* ---------- 滚动显现 ---------- */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
.js [data-reveal].is-visible{opacity:1;transform:none}
.js [data-reveal][data-reveal-delay="1"]{transition-delay:.08s}
.js [data-reveal][data-reveal-delay="2"]{transition-delay:.16s}
.js [data-reveal][data-reveal-delay="3"]{transition-delay:.24s}

/* ============================================================
   头部 · 两级命令栏
   ============================================================ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(11,18,32,.93);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
  transition:background-color .25s ease,box-shadow .25s ease;
}
.site-header[data-scrolled]{background:rgba(11,18,32,.985);box-shadow:0 14px 34px rgba(0,0,0,.48)}
.header-frame{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

.skip-link{
  position:absolute;
  left:18px;
  top:-70px;
  z-index:90;
  padding:10px 18px;
  background:var(--amber);
  color:#0B1220;
  font-weight:700;
  font-size:.88rem;
  border-radius:0 0 10px 10px;
  transition:top .2s ease;
}
.skip-link:focus{top:0}

.header-top{display:flex;align-items:center;gap:20px;padding:13px 0 11px}
.brand{display:inline-flex;align-items:center;gap:12px;min-width:0}
.brand__glyph{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:36px;
  height:36px;
  flex:0 0 auto;
  border-radius:9px;
  background:var(--amber);
  color:#0B1220;
  font-family:var(--font-head);
  font-weight:900;
  font-size:1.05rem;
  transition:background-color .22s ease,transform .22s ease;
}
.brand:hover .brand__glyph{background:var(--amber-2);transform:translateY(-1px)}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{font-family:var(--font-head);font-weight:800;font-size:1.06rem;letter-spacing:.01em;line-height:1.25}
.brand__line{font-family:var(--font-serif);font-size:.76rem;color:var(--stone);letter-spacing:.06em;line-height:1.4}
.header-utility{
  margin-left:auto;
  font-family:var(--font-serif);
  font-size:.8rem;
  letter-spacing:.08em;
  color:var(--mist);
  padding:6px 14px;
  border:1px dashed var(--line);
  border-radius:999px;
  white-space:nowrap;
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:9px 15px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.84rem;
  color:var(--cream);
  transition:border-color .2s ease,color .2s ease;
}
.nav-toggle:hover{border-color:var(--mint);color:var(--mint)}
.nav-toggle__bars{position:relative;width:18px;height:2px;border-radius:2px;background:currentColor;transition:background-color .2s ease}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;
  width:18px;
  height:2px;
  border-radius:2px;
  background:currentColor;
  transition:transform .2s ease,top .2s ease;
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.site-header[data-open] .nav-toggle__bars{background:transparent}
.site-header[data-open] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.site-header[data-open] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}

.command-bar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  border-top:1px solid var(--line);
}
.command-bar__list{display:flex;align-items:center;gap:2px;overflow-x:auto;scrollbar-width:thin}
.command-bar__item{flex:0 0 auto}
.command-bar__link{
  display:inline-flex;
  align-items:baseline;
  gap:8px;
  padding:13px 15px 14px;
  font-family:var(--font-head);
  font-weight:500;
  font-size:.95rem;
  color:var(--mist);
  border-bottom:2px solid transparent;
  white-space:nowrap;
  transition:color .2s ease,background-color .2s ease,border-color .2s ease;
}
.command-bar__link:hover{color:var(--cream);background:rgba(244,241,234,.05)}
.command-bar__link[aria-current="page"]{color:var(--cream);font-weight:800;border-bottom-color:var(--amber)}
.command-bar__index{font-family:var(--font-data);font-size:.7rem;color:var(--stone);letter-spacing:.04em}
.command-bar__link[aria-current="page"] .command-bar__index{color:var(--amber)}
.command-bar__status{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:0 4px 0 0;
  font-family:var(--font-data);
  font-size:.78rem;
  color:var(--mist);
  white-space:nowrap;
}

.scroll-progress{
  position:absolute;
  left:0;
  bottom:-1px;
  width:0;
  height:2px;
  background:linear-gradient(90deg,var(--amber),var(--amber-2) 55%,var(--mint));
  transition:width .12s linear;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{position:relative;background:var(--ink-2);border-top:1px solid var(--line);color:var(--cream)}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0 0 auto 0;
  height:3px;
  background:linear-gradient(90deg,var(--amber),var(--clay) 38%,var(--moss) 68%,var(--mint));
}
.footer-frame{width:100%;max-width:var(--maxw);margin:0 auto;padding:58px 24px 26px}
.footer-grid{display:grid;grid-template-columns:1.25fr 1.5fr 1.35fr;gap:34px}

.footer-identity > * + *{margin-top:12px}
.footer-brand{font-family:var(--font-head);font-weight:800;font-size:1.08rem;letter-spacing:.01em}
.footer-brand__domain{font-family:var(--font-data);font-size:.88rem;color:var(--mist)}
.footer-tagline{font-family:var(--font-serif);font-size:.86rem;letter-spacing:.05em;color:var(--mist);line-height:1.7}
.footer-status{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-data);font-size:.78rem;color:var(--mint)}

.footer-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:26px}
.footer-column__title{
  font-family:var(--font-serif);
  font-size:.8rem;
  letter-spacing:.14em;
  color:var(--mist);
  padding-bottom:10px;
  margin-bottom:12px;
  border-bottom:1px solid var(--line);
}
.footer-list li + li{margin-top:9px}
.footer-list a{
  font-size:.92rem;
  color:var(--mist);
  transition:color .2s ease,padding-left .2s ease;
  border-bottom:1px solid transparent;
}
.footer-list a:hover{color:var(--amber);padding-left:4px}

.footer-contact .footer-column__title{margin-bottom:14px}
.contact-list li{font-size:.88rem}
.contact-list__row{
  display:grid;
  grid-template-columns:auto 1fr auto;
  align-items:center;
  gap:10px;
  padding:9px 0;
  border-bottom:1px dashed rgba(201,209,217,.16);
}
.contact-list__row--wide{grid-template-columns:auto 1fr}
.contact-list__key{font-family:var(--font-serif);font-size:.78rem;letter-spacing:.08em;color:var(--stone);white-space:nowrap}
.contact-list__value{font-family:var(--font-data);font-size:.84rem;color:var(--cream);word-break:break-all}
.contact-list__row--wide .contact-list__value{font-family:var(--font-body);font-size:.86rem;color:var(--mist)}
.copy-btn{
  padding:5px 12px;
  border:1px solid var(--line);
  border-radius:999px;
  font-size:.76rem;
  color:var(--mist);
  white-space:nowrap;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.copy-btn:hover{border-color:var(--mint);color:var(--mint)}
.copy-btn[data-state="done"]{background:var(--mint);border-color:var(--mint);color:#0B1220;font-weight:700}
.footer-note{margin-top:14px;font-size:.8rem;color:var(--stone);line-height:1.7}

.footer-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 26px;
  margin-top:40px;
  padding-top:18px;
  border-top:1px solid var(--line);
  font-size:.82rem;
  color:var(--stone);
}
.footer-legal{font-family:var(--font-data);letter-spacing:.02em}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal-links a{color:var(--mist);transition:color .2s ease}
.footer-legal-links a:hover{color:var(--mint)}
.footer-copy{font-family:var(--font-serif);letter-spacing:.04em}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px}
  .footer-contact{grid-column:1 / -1}
  .grid--4{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--bento{grid-template-columns:repeat(6,minmax(0,1fr))}
  .col-3,.col-4{grid-column:span 3}
  .col-5,.col-6,.col-7,.col-8{grid-column:span 6}
}
@media (max-width:960px){
  .header-utility{display:none}
  .nav-toggle{display:inline-flex}
  .command-bar{
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    position:absolute;
    left:0;
    right:0;
    top:100%;
    padding:8px 24px 20px;
    background:var(--ink-2);
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 48px rgba(0,0,0,.55);
    max-height:72vh;
    overflow-y:auto;
  }
  .site-header[data-open] .command-bar{display:flex}
  .command-bar__list{flex-direction:column;align-items:stretch;gap:0;overflow:visible}
  .command-bar__link{
    width:100%;
    padding:14px 12px;
    font-size:1rem;
    border-bottom:1px solid var(--line-soft);
    border-left:2px solid transparent;
  }
  .command-bar__link[aria-current="page"]{
    border-bottom-color:var(--line-soft);
    border-left-color:var(--amber);
    background:rgba(255,106,0,.09);
  }
  .command-bar__status{padding:16px 4px 0}
}
@media (max-width:720px){
  .container{padding:0 18px}
  .header-frame{padding:0 18px}
  .footer-frame{padding:46px 18px 22px}
  .grid--2,.grid--3,.grid--4{grid-template-columns:1fr}
  .grid--bento{grid-template-columns:1fr;gap:14px}
  [class*="col-"]{grid-column:1 / -1}
  .footer-nav{grid-template-columns:1fr;gap:22px}
  .contact-list__row{grid-template-columns:1fr auto;row-gap:4px}
  .contact-list__row--wide{grid-template-columns:1fr}
  .contact-list__key{grid-column:1 / -1}
  .footer-base{flex-direction:column;align-items:flex-start}
}
@media (max-width:420px){
  .brand__line{display:none}
  .command-bar{padding-left:18px;padding-right:18px}
}

/* ============================================================
   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;
  }
  .status-dot{animation:none;box-shadow:none}
  .js [data-reveal]{opacity:1;transform:none}
  .scroll-progress{transition:none}
}