/* ============================================================
   哈哈体育信誉无忧 · HAHA 中国坐标
   /assets/site.css — 共享外壳样式（reset / 变量 / 排版 / 头部 / 页脚 / 基础组件）
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
main{display:block}
:focus-visible{outline:2px solid var(--gold);outline-offset:3px;box-shadow:0 0 0 4px rgba(0,229,195,.28)}

/* ---------- 2. 令牌 ---------- */
:root{
  --ink:#0A2A24;
  --ink-2:#123C34;
  --ink-3:#0E352E;
  --cyan:#00E5C3;
  --cyan-soft:#7CFFE8;
  --gold:#D4A843;
  --coral:#FF6F61;
  --mist:#F4F7F6;
  --rock:#1B1F1E;
  --void:#050807;
  --line:rgba(0,229,195,.18);
  --line-soft:rgba(244,247,246,.12);
  --line-gold:rgba(212,168,67,.42);
  --text:rgba(244,247,246,.92);
  --text-soft:rgba(244,247,246,.7);
  --text-dim:rgba(244,247,246,.48);
  --r-xs:10px;
  --r-sm:14px;
  --r-md:20px;
  --r-lg:30px;
  --r-xl:46px;
  --r-pill:999px;
  --shell:min(1240px,100% - 2.4rem);
  --ease:cubic-bezier(.22,.68,.3,1);
  --font-display:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --font-body:'Noto Sans SC','PingFang SC','Hiragino Sans GB','Microsoft YaHei',system-ui,sans-serif;
  --font-mono:'JetBrains Mono','SF Mono','Consolas','Menlo','Courier New',monospace;
  --header-h:78px;
}
@media (max-width:560px){:root{--shell:min(1240px,100% - 1.6rem);--header-h:68px}}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100%;
  background:
    radial-gradient(1200px 620px at 88% -12%,rgba(0,229,195,.10),transparent 62%),
    radial-gradient(900px 520px at -8% 22%,rgba(212,168,67,.07),transparent 60%),
    var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
.display{font-family:var(--font-display);font-weight:800;line-height:1.02;letter-spacing:-.02em;color:var(--mist)}
.display--xl{font-size:clamp(2.7rem,7vw,5.6rem)}
.display--lg{font-size:clamp(2.1rem,4.6vw,3.6rem)}
.display--md{font-size:clamp(1.5rem,2.8vw,2.2rem);font-weight:700}
.eyebrow{display:inline-flex;align-items:center;gap:.55rem;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.2em;text-transform:uppercase;color:var(--gold)}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;opacity:.7}
.lede{font-size:clamp(1rem,1.5vw,1.14rem);line-height:1.85;color:var(--text-soft);max-width:62ch}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
p a:not([class]):hover{color:var(--cyan-soft)}

/* ---------- 4. 布局工具 ---------- */
.shell{width:var(--shell);margin-inline:auto}
.section{padding-block:clamp(2.5rem,6vw,5rem)}
.bento{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(.9rem,1.7vw,1.5rem)}
.bento>*{grid-column:span 12}
.b-3{grid-column:span 3}
.b-4{grid-column:span 4}
.b-5{grid-column:span 5}
.b-6{grid-column:span 6}
.b-7{grid-column:span 7}
.b-8{grid-column:span 8}
.b-9{grid-column:span 9}
.b-12{grid-column:span 12}
.slash{height:1px;border:0;margin-block:clamp(1.5rem,4vw,3rem);
  background:linear-gradient(90deg,transparent,rgba(0,229,195,.6),rgba(212,168,67,.5),transparent);
  transform:rotate(-1.4deg)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 5. 卡片 / 区块 ---------- */
.panel{position:relative;background:var(--ink-2);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(1.25rem,2.4vw,2rem);
  transition:transform .35s var(--ease),border-color .3s ease,background-color .3s ease}
.panel:hover{transform:translateY(-4px);border-color:rgba(0,229,195,.45)}
.panel--focus{background:linear-gradient(155deg,rgba(0,229,195,.15),rgba(10,42,36,.25) 58%),var(--ink-2);border-color:rgba(0,229,195,.4)}
.panel--dark{background:var(--rock);border-color:rgba(244,247,246,.1)}
.panel--light{background:var(--mist);color:var(--ink);border-color:transparent}
.panel--light .lede,.panel--light .stat__label{color:rgba(10,42,36,.7)}
.panel--light .eyebrow{color:#8A6A18}
.panel--gold{border-color:var(--line-gold);background:linear-gradient(160deg,rgba(212,168,67,.12),transparent 60%),var(--ink-2)}
.panel__index{display:block;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;text-transform:uppercase;color:var(--gold);margin-bottom:.65rem}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:1rem;
  padding-bottom:1rem;border-bottom:1px solid var(--line);margin-bottom:clamp(1.5rem,3vw,2.4rem)}
.stat__value{font-family:var(--font-mono);font-weight:700;font-size:clamp(1.8rem,3.6vw,2.7rem);line-height:1.1;color:var(--cyan)}
.stat__label{display:block;font-family:var(--font-mono);font-size:.68rem;letter-spacing:.16em;text-transform:uppercase;color:var(--text-dim);margin-top:.35rem}
.step-num{display:inline-block;font-family:var(--font-mono);font-weight:700;font-size:clamp(2.2rem,4.6vw,3.4rem);line-height:1;
  color:var(--cyan);transition:transform .3s var(--ease),color .3s ease}
.step-num:hover{transform:scale(1.08);color:var(--gold)}

/* ---------- 6. 胶囊标签 ---------- */
.tag{display:inline-flex;align-items:center;gap:.4rem;padding:.28rem .75rem;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(0,229,195,.07);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;color:var(--cyan)}
.tag--gold{border-color:var(--line-gold);background:rgba(212,168,67,.09);color:var(--gold)}
.tag--coral{border-color:rgba(255,111,97,.42);background:rgba(255,111,97,.09);color:var(--coral)}

/* ---------- 7. 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.75rem 1.35rem;border-radius:var(--r-pill);border:1px solid transparent;
  font-size:.94rem;font-weight:600;letter-spacing:.01em;white-space:nowrap;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,box-shadow .25s ease,transform .25s var(--ease)}
.btn:hover{transform:translateY(-1px)}
.btn--primary{background:var(--cyan);color:#04211C}
.btn--primary:hover{background:var(--cyan-soft);box-shadow:0 0 0 4px rgba(0,229,195,.18)}
.btn--ghost{border-color:var(--line);color:var(--mist)}
.btn--ghost:hover{border-color:var(--gold);color:var(--gold);background:rgba(212,168,67,.08)}
.btn--coral{border-color:rgba(255,111,97,.5);color:var(--coral)}
.btn--coral:hover{background:rgba(255,111,97,.12);border-color:var(--coral)}
.btn--sm{padding:.55rem 1rem;font-size:.84rem}

/* ---------- 8. 面包屑 ---------- */
.crumbs{padding:1.6rem 0 .3rem}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:.15rem;
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--text-dim)}
.crumbs li+li::before{content:"／";margin:0 .35rem;color:var(--gold);opacity:.8}
.crumbs a{transition:color .25s ease}
.crumbs a:hover{color:var(--cyan-soft)}
.crumbs [aria-current="page"]{color:var(--mist)}

/* ---------- 9. 折叠面板（无后端） ---------- */
.accordion{border:1px solid var(--line);border-radius:var(--r-md);background:var(--ink-2);overflow:hidden;
  transition:border-color .3s ease}
.accordion+.accordion{margin-top:.75rem}
.accordion:hover{border-color:rgba(0,229,195,.4)}
.accordion summary{display:flex;align-items:center;gap:1rem;padding:1.05rem 1.3rem;cursor:pointer;
  list-style:none;font-weight:500;color:var(--mist);transition:color .25s ease,background-color .25s ease}
.accordion summary::-webkit-details-marker{display:none}
.accordion summary::after{content:"+";margin-left:auto;font-family:var(--font-mono);font-size:1.15rem;line-height:1;color:var(--cyan)}
.accordion summary:hover{color:var(--cyan-soft);background:rgba(0,229,195,.06)}
.accordion[open] summary{background:rgba(0,229,195,.07)}
.accordion[open] summary::after{content:"–";color:var(--gold)}
.accordion__idx{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.12em;color:var(--gold)}
.accordion__body{padding:0 1.3rem 1.3rem;color:var(--text-soft);font-size:.97rem;line-height:1.8}

/* ---------- 10. 图片容器（页面阶段放置图片） ---------- */
.media-frame{position:relative;isolation:isolate;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line);aspect-ratio:16/10;
  background:linear-gradient(150deg,var(--ink-2),var(--rock) 62%,var(--void))}
.media-frame img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__tag{position:absolute;top:.9rem;left:.9rem;z-index:2;padding:.26rem .7rem;border-radius:var(--r-pill);
  background:rgba(5,8,7,.72);border:1px solid var(--line);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;color:var(--cyan)}
.media-frame__cap{position:absolute;left:0;right:0;bottom:0;z-index:2;padding:.8rem 1.1rem;
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.1em;color:var(--mist);
  background:linear-gradient(to top,rgba(5,8,7,.88),transparent)}

/* ---------- 11. 显现（data-reveal） ---------- */
[data-reveal]{opacity:0;transform:translateY(18px);
  transition:opacity .65s var(--ease),transform .65s var(--ease)}
[data-reveal].is-in{opacity:1;transform:none}

/* ---------- 12. Skip link ---------- */
.skip-link{position:absolute;left:1rem;top:-4.5rem;z-index:120;padding:.7rem 1.2rem;border-radius:var(--r-pill);
  background:var(--cyan);color:var(--ink);font-weight:600;font-size:.9rem;
  transition:top .25s var(--ease)}
.skip-link:focus{top:.9rem}

/* ---------- 13. 页头 ---------- */
.site-header{position:sticky;top:0;z-index:80;
  background:rgba(10,42,36,.9);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line)}
.site-header__inner{width:var(--shell);margin-inline:auto;min-height:var(--header-h);
  display:flex;align-items:center;gap:clamp(.7rem,1.8vw,1.6rem)}

.brand{display:flex;align-items:center;gap:.7rem;margin-right:auto;flex:none}
.brand__mark{position:relative;flex:none;width:38px;height:38px;border-radius:50%;
  border:1px solid rgba(0,229,195,.55);
  background:radial-gradient(circle at 50% 50%,rgba(0,229,195,.22),transparent 64%);
  transition:transform .4s var(--ease),border-color .3s ease}
.brand__mark::before{content:"";position:absolute;inset:29%;border-radius:50%;border:1px solid var(--gold);
  transition:inset .35s var(--ease)}
.brand__mark::after{content:"";position:absolute;left:50%;top:-5px;width:1px;height:8px;background:var(--cyan);
  transform:translateX(-50%);box-shadow:0 40px 0 var(--cyan)}
.brand:hover .brand__mark{transform:rotate(45deg);border-color:var(--gold)}
.brand:hover .brand__mark::before{inset:36%}
.brand__text{display:flex;flex-direction:column;line-height:1.15}
.brand__name{font-size:1.02rem;font-weight:800;letter-spacing:.02em;color:var(--mist)}
.brand__tag{font-family:var(--font-mono);font-size:.63rem;letter-spacing:.14em;color:var(--gold)}

.nav-rail__list{display:flex;align-items:center;gap:.15rem}
.nav-link{position:relative;display:flex;flex-direction:column;align-items:center;gap:.08rem;
  padding:.5rem .72rem .7rem;border-radius:var(--r-sm);border:1px solid transparent;
  color:rgba(244,247,246,.66);
  transition:color .25s ease,border-color .25s ease,background-color .25s ease}
.nav-link__idx{font-family:var(--font-mono);font-size:.6rem;letter-spacing:.14em;color:rgba(212,168,67,.78);
  transition:color .25s ease,transform .25s ease}
.nav-link__label{font-size:.94rem;font-weight:500;white-space:nowrap}
.nav-link::after{content:"";position:absolute;left:.72rem;right:.72rem;bottom:.42rem;height:1px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .32s var(--ease),background-color .3s ease}
.nav-link:hover{color:var(--mist);background:rgba(0,229,195,.07);border-color:rgba(0,229,195,.26)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link:hover .nav-link__idx{color:var(--cyan);transform:translateY(-1px)}
.nav-link[aria-current="page"]{color:var(--mist);background:rgba(0,229,195,.1);border-color:rgba(0,229,195,.45)}
.nav-link[aria-current="page"] .nav-link__idx{color:var(--cyan)}
.nav-link[aria-current="page"]::after{transform:scaleX(1);background:var(--gold)}

.site-header__aside{display:flex;align-items:center;gap:.6rem;flex:none}

.nav-toggle{display:none;align-items:center;gap:.55rem;padding:.55rem .85rem;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--mist);
  transition:border-color .25s ease,background-color .25s ease,color .25s ease}
.nav-toggle:hover{border-color:var(--cyan);background:rgba(0,229,195,.08);color:var(--cyan-soft)}
.nav-toggle__bars{display:block;width:18px}
.nav-toggle__bars span{display:block;height:1.5px;border-radius:2px;background:var(--cyan);transition:width .25s ease,background-color .25s ease}
.nav-toggle__bars span+span{margin-top:4px;width:12px;margin-left:auto}
.nav-toggle__label{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.12em}
.nav-toggle[aria-expanded="true"]{border-color:var(--gold);color:var(--gold)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span{background:var(--gold);width:18px}

.scroll-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none}
.scroll-progress__bar{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:left;
  background:linear-gradient(90deg,var(--cyan),var(--gold));transition:transform .14s linear}

/* ---------- 14. 页脚 ---------- */
.site-footer{margin-top:clamp(3.5rem,8vw,7rem);background:var(--void);
  border-top:1px solid rgba(0,229,195,.16);color:var(--text-soft)}
.site-footer__top{padding:clamp(2.4rem,5vw,4rem) 0 clamp(1.6rem,3vw,2.4rem);
  background:
    radial-gradient(700px 320px at 84% 0%,rgba(0,229,195,.10),transparent 64%),
    radial-gradient(620px 300px at 6% 100%,rgba(212,168,67,.08),transparent 62%)}
.site-footer__inner{width:var(--shell);margin-inline:auto;display:grid;
  grid-template-columns:1.5fr 1fr 1.3fr;gap:clamp(1.5rem,4vw,3rem)}

.footer-origin__brand{font-size:1.15rem;font-weight:800;color:var(--mist);letter-spacing:.02em}
.footer-origin__tag{font-family:var(--font-mono);font-size:.68rem;letter-spacing:.18em;color:var(--gold);margin-top:.3rem}
.footer-origin__note{margin-top:.9rem;font-size:.94rem;line-height:1.8;color:var(--text-soft);max-width:38ch}
.footer-origin__stamp{margin-top:1rem;font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--text-dim)}
.footer-origin__stamp .mono{color:var(--cyan)}

.footer-col__title{font-family:var(--font-mono);font-size:.66rem;font-weight:500;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gold);margin-bottom:1rem}
.footer-nav__list{display:grid;gap:.35rem}
.footer-link{position:relative;display:inline-block;padding:.28rem 0;font-size:.95rem;
  color:rgba(244,247,246,.8);transition:color .25s ease}
.footer-link::after{content:"";position:absolute;left:0;bottom:0;width:100%;height:1px;background:var(--cyan);
  transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.footer-link:hover{color:var(--cyan-soft)}
.footer-link:hover::after{transform:scaleX(1)}
.footer-link--quiet{font-family:var(--font-mono);font-size:.72rem;letter-spacing:.06em;color:var(--text-dim)}
.footer-link--quiet::after{background:var(--gold)}

.footer-contact{display:grid;gap:.6rem}
.copy-chip{display:inline-flex;align-items:center;gap:.6rem;max-width:100%;
  padding:.42rem .75rem;border:1px dashed rgba(0,229,195,.32);border-radius:var(--r-pill);
  color:var(--text-soft);text-align:left;
  transition:border-color .25s ease,background-color .25s ease,color .25s ease}
.copy-chip__value{font-family:var(--font-mono);font-size:.78rem;letter-spacing:.02em;overflow-wrap:anywhere}
.copy-chip__hint{flex:none;font-size:.66rem;letter-spacing:.1em;color:var(--coral)}
.copy-chip:hover{border-color:var(--cyan);background:rgba(0,229,195,.08);color:var(--mist)}
.copy-chip.is-copied{border-style:solid;border-color:var(--cyan);color:var(--cyan-soft)}
.copy-chip.is-copied .copy-chip__hint{color:var(--cyan)}
.footer-address{font-size:.9rem;color:var(--text-soft)}

.site-footer__inner--base{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:.75rem 1.5rem;padding:1.1rem 0 1.6rem;border-top:1px solid rgba(244,247,246,.1)}
.footer-legal{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.06em;color:var(--text-dim)}
.to-top{padding:.42rem .9rem;border-radius:var(--r-pill);border:1px solid var(--line-soft);
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.12em;color:var(--text-soft);
  transition:border-color .25s ease,color .25s ease,background-color .25s ease}
.to-top:hover{border-color:var(--gold);color:var(--gold);background:rgba(212,168,67,.08)}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1080px){
  .bento>.b-3,.bento>.b-4,.bento>.b-5{grid-column:span 6}
  .bento>.b-7,.bento>.b-8,.bento>.b-9{grid-column:span 12}
}
@media (max-width:960px){
  .nav-toggle{display:inline-flex}
  .nav-rail{position:absolute;top:100%;left:0;right:0;display:block;
    padding:1rem clamp(1rem,4vw,1.6rem) 1.5rem;
    background:var(--ink-2);border-bottom:1px solid var(--line);
    border-radius:0 0 var(--r-lg) var(--r-lg);
    box-shadow:0 26px 44px rgba(5,8,7,.5);
    opacity:0;visibility:hidden;transform:translateY(-10px);
    transition:opacity .28s var(--ease),transform .28s var(--ease),visibility .28s linear}
  .nav-rail[data-open]{opacity:1;visibility:visible;transform:none}
  .nav-rail__list{flex-direction:column;align-items:stretch;gap:.25rem}
  .nav-link{flex-direction:row;align-items:center;justify-content:flex-start;gap:.85rem;
    padding:.85rem .9rem .95rem;border-radius:var(--r-sm);font-size:1rem}
  .nav-link__idx{font-size:.68rem}
  .nav-link::after{left:.9rem;right:.9rem;bottom:.5rem}
  .site-footer__inner{grid-template-columns:1fr 1fr}
}
@media (max-width:720px){
  .bento>*{grid-column:span 12}
}
@media (max-width:640px){
  .site-footer__inner{grid-template-columns:1fr}
  .site-footer__inner--base{flex-direction:column;align-items:flex-start}
}
@media (max-width:560px){
  body{font-size:16px}
  .site-header__aside .btn{display:none}
  .brand__tag{display:none}
}

/* ---------- 16. 动效偏好 ---------- */
@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}
  [data-reveal]{opacity:1 !important;transform:none !important}
}