/* ===== 大江体育 Site Kit · /assets/site.css ===== */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,svg{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0}
a{color:inherit;text-decoration:none}

:root{
  --deep:#071A2B;
  --night:#02070C;
  --ink:#12344D;
  --teal:#0E6E73;
  --tide:#5FC7C9;
  --orange:#FF6A2A;
  --orange-soft:#FFD2B8;
  --silver:#B8C4CC;
  --mist:#F4F7F8;
  --line:rgba(184,196,204,.20);
  --line-soft:rgba(184,196,204,.12);
  --txt:rgba(244,247,248,.90);
  --txt-dim:rgba(244,247,248,.70);
  --sans:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Roboto Mono","Courier New",monospace;
  --wrap:1240px;
  --radius:18px;
  --header-h:76px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

html,body{background:var(--deep)}
body{
  font-family:var(--sans);
  font-size:17px;
  line-height:1.8;
  font-weight:400;
  color:var(--txt);
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
::selection{background:var(--orange);color:#08131d}

:focus-visible{outline:2px solid var(--tide);outline-offset:3px;border-radius:4px}
:focus:not(:focus-visible){outline:none}

.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;letter-spacing:.06em}

/* ---------- 骨架 ---------- */
.container{width:min(var(--wrap),calc(100% - 56px));margin-inline:auto}

.section{padding:clamp(56px,7.5vw,104px) 0}
.section--tight{padding:clamp(38px,5vw,64px) 0}
.section--first{padding-top:calc(var(--header-h) + clamp(48px,7vw,96px))}
.section--light{background:var(--mist);color:#0b2130}
.section--light .lede{color:#3a5666}
.section--light .eyebrow{color:#0b5a5e}
.section--light .rule{background:rgba(11,33,48,.16)}
.section--light .tag{color:#0b5a5e;background:rgba(14,110,115,.10);border-color:rgba(14,110,115,.35)}
.section--light .status{color:#3a5666}

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

/* ---------- 排版 ---------- */
.display{
  font-size:clamp(34px,5.2vw,64px);
  line-height:1.06;
  font-weight:800;
  letter-spacing:-.02em;
  color:var(--mist);
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--tide);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor;opacity:.7}
.lede{
  margin-top:16px;
  font-size:clamp(16.5px,1.35vw,19px);
  line-height:1.85;
  color:var(--txt-dim);
  max-width:38em;
}
.prose{max-width:36em}
.prose p{font-size:17px;line-height:1.88;color:var(--txt-dim)}
.prose p+p{margin-top:1.05em}
.prose h3{margin:1.6em 0 .5em;font-size:22px;line-height:1.4;color:var(--mist)}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(18px,2.4vw,32px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--7-5{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.grid--5-7{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  transition:background-color .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.btn:hover{transform:translateY(-1px)}
.btn--signal{background:var(--orange);color:#08131d;box-shadow:0 12px 26px -16px rgba(255,106,42,.95)}
.btn--signal:hover{background:#ff7f47}
.btn--ghost{background:rgba(18,52,77,.32);border-color:rgba(184,196,204,.38);color:var(--mist)}
.btn--ghost:hover{border-color:var(--tide);color:var(--tide);background:rgba(14,110,115,.22)}
.btn--sm{padding:10px 15px;font-size:13.5px}
.btn--block{width:100%}
.btn-ver{
  font-size:10px;letter-spacing:.10em;padding:2px 5px;border-radius:4px;
  background:rgba(7,26,43,.16);color:#08131d;
}

/* ---------- 卡片 / 标签 / 状态 ---------- */
.card{
  position:relative;
  background:var(--ink);
  border:1px solid var(--line-soft);
  border-radius:var(--radius);
  padding:clamp(20px,2.4vw,30px);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.card:hover{transform:translateY(-2px);border-color:rgba(95,199,201,.5)}
.card--ink{background:rgba(7,26,43,.78)}
.card__title{margin-top:12px;font-size:clamp(19px,2vw,23px);line-height:1.36;font-weight:700;letter-spacing:-.01em;color:var(--mist)}
.card__text{margin-top:10px;font-size:15.5px;line-height:1.8;color:var(--txt-dim)}
.card__meta{margin-top:16px;font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--tide)}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  border:1px solid rgba(95,199,201,.40);
  background:rgba(14,110,115,.22);
  font-family:var(--mono);font-size:11.5px;letter-spacing:.10em;
  color:var(--tide);
}
.tag--signal{border-color:rgba(255,106,42,.45);background:rgba(255,106,42,.14);color:#ffb08b}

.status{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.12em;color:var(--silver)}
.status__dot{width:8px;height:8px;border-radius:50%;background:var(--orange);box-shadow:0 0 0 4px rgba(255,106,42,.16)}
.status--ok .status__dot{background:var(--tide);box-shadow:0 0 0 4px rgba(95,199,201,.16)}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin-bottom:24px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.08em}
.breadcrumb__item{display:flex;align-items:center;gap:8px;color:rgba(184,196,204,.78)}
.breadcrumb__item+.breadcrumb__item::before{content:"/";color:rgba(184,196,204,.38)}
.breadcrumb a{color:rgba(244,247,248,.72);transition:color .18s var(--ease)}
.breadcrumb a:hover{color:var(--tide)}
.breadcrumb [aria-current="page"]{color:var(--silver)}

/* ---------- 图片容器基础规则 ---------- */
.media{
  position:relative;overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line-soft);
  background:linear-gradient(150deg,#0d2a41 0%,#071A2B 58%,#04101c 100%);
  isolation:isolate;
}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;z-index:1;
  background:
    radial-gradient(52% 58% at 82% 12%,rgba(255,106,42,.24),transparent 68%),
    radial-gradient(60% 66% at 12% 88%,rgba(14,110,115,.42),transparent 70%);
}
.media>img,.media>picture>img{width:100%;height:100%;object-fit:cover;position:relative;z-index:0}
.media--wide{aspect-ratio:16/9}
.media--band{aspect-ratio:21/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media__cap{
  margin-top:10px;font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--silver);
}

/* ---------- 滚动显现协议 ---------- */
[data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .55s var(--ease),transform .55s var(--ease)}
[data-reveal].is-revealed{opacity:1;transform:none}
[data-reveal-delay="1"]{transition-delay:.06s}
[data-reveal-delay="2"]{transition-delay:.12s}
[data-reveal-delay="3"]{transition-delay:.18s}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:400;
  transform:translateY(-180%);
  padding:10px 16px;border-radius:8px;
  background:var(--mist);color:#06121c;
  font-size:14px;font-weight:600;
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:none}

/* ================= 头部 ================= */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:120;
  background-color:transparent;
  transition:background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.site-header::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(2,7,12,.80) 0%,rgba(7,26,43,.46) 62%,rgba(7,26,43,0) 100%);
  transition:opacity .18s var(--ease);
}
.site-header.is-scrolled{
  background-color:rgba(7,26,43,.97);
  box-shadow:0 16px 38px -22px rgba(0,0,0,.95);
  border-bottom:1px solid var(--line);
}
.site-header.is-scrolled::before{opacity:0}

.scroll-progress{
  position:absolute;left:0;bottom:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--teal),var(--orange));
  transform:scaleX(0);transform-origin:0 50%;
  z-index:3;
}

.header-inner{
  position:relative;z-index:2;
  width:min(var(--wrap),calc(100% - 56px));
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;align-items:center;gap:clamp(14px,2.4vw,36px);
}

.brand{position:relative;z-index:3;display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
  background:linear-gradient(150deg,var(--teal),#0a4f57);
  border:1px solid rgba(95,199,201,.45);
  box-shadow:inset 0 0 0 1px rgba(7,26,43,.45);
  font-family:var(--mono);font-size:15px;font-weight:700;letter-spacing:.04em;color:var(--mist);
}
.brand-text{display:grid;gap:3px}
.brand-name{display:block;font-size:19px;font-weight:800;letter-spacing:.06em;line-height:1.1;color:var(--mist)}
.brand-tag{display:block;font-size:10.5px;line-height:1.3;letter-spacing:.14em;color:var(--silver)}

.site-nav{display:flex;align-items:center;gap:clamp(12px,2vw,30px);margin-left:auto}
.nav-list{display:flex;align-items:center;gap:clamp(8px,1.5vw,24px)}
.nav-list a{
  position:relative;display:inline-flex;align-items:baseline;gap:6px;
  padding:10px 2px;font-size:15px;color:rgba(244,247,248,.78);
  transition:color .18s var(--ease);
}
.nav-idx{font-size:10px;line-height:1;letter-spacing:.08em;color:var(--tide);opacity:.68;transition:color .18s var(--ease),opacity .18s var(--ease)}
.nav-label{white-space:nowrap}
.nav-list a::after{
  content:"";position:absolute;left:0;right:0;bottom:3px;height:2px;
  background:var(--orange);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .2s var(--ease);
}
.nav-list a:hover{color:var(--mist)}
.nav-list a:hover::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--mist);font-weight:600}
.nav-list a[aria-current="page"]::after{transform:scaleX(1)}
.nav-list a[aria-current="page"] .nav-idx{color:var(--orange);opacity:1}

.nav-extra{display:none}

.header-actions{display:flex;align-items:center;gap:14px;flex:0 0 auto}
.util-link{
  font-size:12.5px;letter-spacing:.04em;color:var(--silver);
  padding-bottom:2px;border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.util-link:hover{color:var(--tide);border-bottom-color:var(--teal)}

.menu-btn{
  display:none;position:relative;width:46px;height:46px;padding:0;
  border-radius:12px;border:1px solid rgba(184,196,204,.40);
  background:rgba(18,52,77,.55);cursor:pointer;
  transition:border-color .18s var(--ease),background-color .18s var(--ease);
}
.menu-btn:hover{border-color:var(--tide)}
.menu-btn__bar{
  position:absolute;left:13px;right:13px;height:2px;border-radius:2px;background:var(--mist);
  transition:transform .18s var(--ease),opacity .18s var(--ease);
}
.menu-btn__bar:nth-child(1){top:19px}
.menu-btn__bar:nth-child(2){top:26px}
.menu-btn__label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
.site-header[data-open="true"] .menu-btn{border-color:var(--orange);background:rgba(255,106,42,.16)}
.site-header[data-open="true"] .menu-btn__bar:nth-child(1){transform:translateY(3.5px) rotate(45deg)}
.site-header[data-open="true"] .menu-btn__bar:nth-child(2){transform:translateY(-3.5px) rotate(-45deg)}

/* ================= 页脚 ================= */
.site-footer{
  position:relative;overflow:hidden;
  background:var(--night);
  color:var(--mist);
  border-top:1px solid rgba(95,199,201,.18);
  padding:clamp(48px,7vw,88px) 0 30px;
}
.footer-glow{
  position:absolute;right:-14%;bottom:-42%;width:min(760px,90vw);height:520px;
  pointer-events:none;
  background:radial-gradient(50% 50% at 50% 50%,rgba(14,110,115,.42),rgba(14,110,115,0) 72%);
}
.footer-inner{
  position:relative;z-index:1;
  width:min(var(--wrap),calc(100% - 56px));
  margin-inline:auto;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,5fr) minmax(0,7fr);
  gap:clamp(28px,5vw,64px);
  align-items:start;
}
.footer-brand{max-width:26em}
.footer-mark{display:inline-flex;align-items:center;gap:12px}
.footer-mark__box{
  display:grid;place-items:center;width:40px;height:40px;border-radius:12px;
  background:linear-gradient(150deg,rgba(14,110,115,.9),rgba(7,26,43,.9));
  border:1px solid rgba(95,199,201,.45);
  font-size:14px;font-weight:700;color:var(--mist);
}
.footer-mark__name{font-size:20px;font-weight:800;letter-spacing:.08em;color:var(--mist)}
.footer-summary{margin-top:18px;font-size:15.5px;line-height:1.85;color:rgba(244,247,248,.72)}
.footer-hours{margin-top:16px;font-size:11.5px;line-height:1.6;letter-spacing:.10em;color:var(--tide)}

.footer-cols{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(18px,2.6vw,34px)}
.footer-col{min-width:0}
.footer-col-title{
  font-family:var(--mono);font-size:11px;letter-spacing:.18em;text-transform:uppercase;
  color:var(--silver);
  padding-bottom:10px;margin-bottom:14px;
  border-bottom:1px solid var(--line);
}
.footer-links{display:grid;gap:10px}
.footer-links a{
  display:inline-block;font-size:15px;line-height:1.6;color:rgba(244,247,248,.80);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-links a:hover{color:var(--tide);border-bottom-color:rgba(95,199,201,.55)}

.footer-contact{
  margin-top:clamp(32px,5vw,56px);padding-top:26px;
  border-top:1px solid var(--line);
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:18px clamp(16px,2.4vw,32px);
}
.contact-item{display:grid;gap:6px;min-width:0}
.contact-label{font-family:var(--mono);font-size:11px;letter-spacing:.16em;color:var(--tide)}
.contact-value{font-size:15px;line-height:1.6;color:rgba(244,247,248,.88);overflow-wrap:anywhere}

.footer-bottom{
  margin-top:32px;padding-top:22px;
  border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:14px 28px;
}
.footer-legal{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;line-height:1.6;color:rgba(184,196,204,.85)}
.footer-dot{color:rgba(184,196,204,.42)}
.footer-legal-links{display:flex;flex-wrap:wrap;gap:20px;font-size:13px}
.footer-legal-links a{
  color:rgba(184,196,204,.85);border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-legal-links a:hover{color:var(--mist);border-bottom-color:var(--orange)}

/* ================= 响应式 ================= */
@media (max-width:1040px){
  :root{--header-h:66px}
  .container,.header-inner,.footer-inner{width:calc(100% - 40px)}
  .brand-mark{width:38px;height:38px;font-size:14px}
  .brand-name{font-size:17px}
  .brand-tag{display:none}
  .header-actions .util-link,.header-actions .btn{display:none}
  .menu-btn{display:block}

  .site-nav{
    position:fixed;inset:0;z-index:1;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;margin:0;
    padding:calc(var(--header-h) + 28px) 22px 44px;
    background:
      radial-gradient(70% 50% at 100% 0%,rgba(14,110,115,.42),transparent 70%),
      radial-gradient(50% 40% at 0% 100%,rgba(255,106,42,.14),transparent 72%),
      var(--deep);
    overflow-y:auto;
    opacity:0;visibility:hidden;pointer-events:none;
    transform:translateY(-10px);
    transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
  }
  .site-header[data-open="true"] .site-nav{opacity:1;visibility:visible;pointer-events:auto;transform:none}

  .nav-list{display:grid;gap:2px;width:100%}
  .nav-list li+li{border-top:1px solid var(--line-soft)}
  .nav-list a{
    display:flex;align-items:baseline;gap:14px;
    padding:16px 4px;font-size:20px;font-weight:600;
  }
  .nav-list a::after{display:none}
  .nav-idx{font-size:12px;opacity:.9}
  .nav-list a[aria-current="page"] .nav-label{color:var(--orange)}
  .nav-extra{display:grid;gap:12px;margin-top:30px;padding-top:26px;border-top:1px solid var(--line)}

  .footer-top{grid-template-columns:minmax(0,1fr);gap:34px}
  .footer-contact{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:900px){
  .grid--2,.grid--3,.grid--7-5,.grid--5-7{grid-template-columns:minmax(0,1fr)}
}

@media (max-width:720px){
  body{font-size:16px}
  .container,.header-inner,.footer-inner{width:calc(100% - 32px)}
  .display{font-size:clamp(30px,8.4vw,42px);line-height:1.12}
  .lede{font-size:16px;line-height:1.8}
  .card__text,.prose p{font-size:15.5px}
  .footer-cols{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-legal-links{gap:16px}
}

@media (max-width:480px){
  .footer-cols{grid-template-columns:minmax(0,1fr)}
  .footer-contact{grid-template-columns:minmax(0,1fr)}
  .brand-mark{width:34px;height:34px;font-size:13px}
  .nav-list a{font-size:18px;padding:14px 2px}
}

@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-reveal]{opacity:1;transform:none;transition:none}
  [data-reveal-delay="1"],[data-reveal-delay="2"],[data-reveal-delay="3"]{transition-delay:0s}
  .btn:hover,.card:hover{transform:none}
  .scroll-progress{transition:none}
}