/* /assets/site.css — 华体育赛场 共享外壳与基础组件 */

/* ---------- 1. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(44px + 16px)}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,dl,dd,dt,blockquote{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{max-width:100%;display:block}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}

/* ---------- 2. 变量 ---------- */
:root{
  --lake:#0E6E8C;
  --deep:#062F3E;
  --paper:#F5EFE2;
  --sun:#E8642A;
  --sand:#E7DCC6;
  --sage:#6F8A78;
  --flag-yellow:#E4B23C;
  --flag-crimson:#C0452F;
  --ink:#221B17;
  --ice:#FFFFFF;

  --line:rgba(34,27,23,.14);
  --line-strong:rgba(34,27,23,.30);
  --line-ice:rgba(255,255,255,.22);

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

  --radius-s:8px;
  --radius:14px;
  --radius-l:22px;

  --gap-xs:10px;
  --gap-s:20px;
  --gap-m:32px;
  --gap-l:56px;

  --header-h:44px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 3. 基础排版 ---------- */
body{
  background-color:var(--paper);
  background-image:repeating-linear-gradient(135deg,rgba(14,110,140,.035) 0 1px,transparent 1px 14px);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.85;
  letter-spacing:.01em;
  min-height:100vh;
}
p{max-width:34em;font-size:16px}
h1,.display-1{font-family:var(--font-display);font-weight:900;font-size:clamp(32px,5vw,64px);line-height:1.12;letter-spacing:.14em;color:var(--ink)}
h2,.display-2{font-family:var(--font-display);font-weight:900;font-size:clamp(26px,3.4vw,40px);line-height:1.22;letter-spacing:.12em}
h3{font-family:var(--font-display);font-weight:800;font-size:20px;line-height:1.4;letter-spacing:.1em}
h4{font-family:var(--font-display);font-weight:700;font-size:17px;letter-spacing:.08em}
strong{font-weight:800}

/* ---------- 4. 无障碍 ---------- */
:focus-visible{outline:2px solid var(--sun);outline-offset:3px;border-radius:4px}
.site-header :focus-visible{outline-color:var(--flag-yellow)}
.skip-link{
  position:absolute;left:12px;top:-60px;z-index:200;
  background:var(--lake);color:var(--ice);
  padding:10px 18px;border-radius:0 0 var(--radius) var(--radius);
  font-size:13px;letter-spacing:.08em;font-family:var(--font-mono);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 5. 布局容器 ---------- */
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}
.container--narrow{max-width:880px}
.section{padding:var(--gap-l) 0}
.section--tight{padding:var(--gap-m) 0}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:var(--gap-m)}
.section-head__title{max-width:26em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;color:var(--lake)}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--sun)}
.idx{font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;color:var(--flag-yellow)}
.idx--lake{color:var(--lake)}
.idx--sun{color:var(--sun)}
.meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:rgba(34,27,23,.58)}
.meta-sup{font-family:var(--font-mono);font-size:11px;letter-spacing:0;color:var(--sun);vertical-align:super;line-height:0}
.rule-flag{height:3px;border-radius:2px;background:linear-gradient(90deg,var(--lake) 0 22%,var(--flag-yellow) 22% 42%,var(--sun) 42% 62%,var(--sage) 62% 82%,var(--flag-crimson) 82% 100%)}

/* ---------- 6. Bento 网格 ---------- */
.bento{display:grid;grid-template-columns:repeat(12,1fr);gap:var(--gap-m)}
.bento__focus{grid-column:span 7}
.bento__aside{grid-column:span 5}
.bento__cell{grid-column:span 4}
.bento__cell--wide{grid-column:span 6}
.bento__cell--full{grid-column:span 12}

/* ---------- 7. 卡片 / 玻璃层 ---------- */
.card{background:var(--paper);border:1px solid var(--line);border-radius:var(--radius);padding:22px;position:relative}
.card--sand{background:var(--sand);border-color:rgba(34,27,23,.1)}
.card--lake{background:var(--lake);border-color:rgba(255,255,255,.22);color:var(--ice)}
.card--deep{background:var(--deep);border-color:rgba(255,255,255,.16);color:var(--paper)}
.card--glass{background:rgba(14,110,140,.14);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-color:rgba(255,255,255,.42)}
.card--cut{clip-path:polygon(0 0,100% 0,100% 92%,0 100%)}
.card__title{font-family:var(--font-display);font-weight:800;font-size:18px;letter-spacing:.08em;margin-bottom:10px}
.card__meta{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:rgba(34,27,23,.58)}
.card--lake .card__meta,.card--deep .card__meta{color:rgba(245,239,226,.72)}
.card--lake .card__title,.card--deep .card__title{color:var(--ice)}
.card__body{font-size:15px;line-height:1.8}
.card__foot{margin-top:16px;padding-top:14px;border-top:1px solid var(--line);display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.card--lake .card__foot,.card--deep .card__foot{border-top-color:var(--line-ice)}
.glass{
  background:rgba(14,110,140,.16);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid rgba(255,255,255,.42);
  border-radius:var(--radius);
}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:11px 18px;border-radius:999px;border:1px solid transparent;
  font-size:13.5px;line-height:1;letter-spacing:.06em;
  transition:transform .18s var(--ease),background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{transform:translateY(-2px)}
.btn--sun{background:var(--sun);color:var(--ink);box-shadow:0 8px 20px rgba(232,100,42,.26)}
.btn--lake{background:var(--lake);color:var(--ice);border-color:rgba(255,255,255,.22)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--line-strong)}
.btn--ghost:hover{border-color:var(--lake);color:var(--lake)}
.btn--ice{background:transparent;color:var(--paper);border-color:var(--line-ice)}
.btn--ice:hover{background:rgba(245,239,226,.12)}
.btn--sm{padding:8px 14px;font-size:12px}

/* ---------- 9. 标签 / 筛选 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:999px;border:1px solid currentColor;font-family:var(--font-mono);font-size:11px;letter-spacing:.06em}
.tag--lake{color:var(--lake);background:rgba(14,110,140,.08)}
.tag--sun{color:var(--sun);background:rgba(232,100,42,.1)}
.tag--sage{color:#4E6957;background:rgba(111,138,120,.14)}
.tag--yellow{color:#7E5F10;background:rgba(228,178,60,.18)}
.tag--crimson{color:var(--flag-crimson);background:rgba(192,69,47,.12)}
.chip-bar{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:7px 14px;border-radius:999px;border:1px solid var(--line-strong);font-size:12.5px;color:var(--ink);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.chip:hover{border-color:var(--lake);color:var(--lake)}
.chip[aria-pressed="true"]{background:var(--lake);border-color:var(--lake);color:var(--ice)}

/* ---------- 10. 面包屑 / 步骤 / 表格 ---------- */
.breadcrumb{padding:14px 0;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em}
.breadcrumb__list{display:flex;flex-wrap:wrap;gap:8px;align-items:center}
.breadcrumb__item{display:flex;align-items:center;gap:8px}
.breadcrumb__link{color:var(--lake);border-bottom:1px solid rgba(14,110,140,.35)}
.breadcrumb__sep{color:rgba(34,27,23,.35)}
.breadcrumb__current{color:rgba(34,27,23,.6)}

.steps{display:flex;flex-direction:column;gap:var(--gap-s)}
.step{display:grid;grid-template-columns:44px 1fr;gap:16px;align-items:start}
.step__num{display:flex;align-items:center;justify-content:center;width:30px;height:30px;margin-top:4px;border-radius:50%;background:var(--sun);color:var(--ink);font-family:var(--font-mono);font-size:12px}
.step__title{font-family:var(--font-display);font-weight:800;font-size:17px;letter-spacing:.06em;margin-bottom:6px}
.step__body{font-size:15px;line-height:1.8;color:rgba(34,27,23,.82)}

.data-table__wrap{overflow-x:auto;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper)}
.data-table{width:100%;font-size:14px;min-width:520px}
.data-table th{background:var(--deep);color:var(--paper);font-family:var(--font-mono);font-weight:400;font-size:11.5px;letter-spacing:.1em;text-align:left;padding:10px 14px;white-space:nowrap}
.data-table td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}
.data-table tbody tr:nth-child(even){background:var(--sand)}

/* ---------- 11. 图片容器与卷轴 ---------- */
.media{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid rgba(255,255,255,.35);background:linear-gradient(140deg,var(--deep) 0%,var(--lake) 62%,rgba(232,100,42,.6) 100%)}
.media img{width:100%;height:100%;object-fit:cover;display:block}
.media--16x9{aspect-ratio:16/9}
.media--3x2{aspect-ratio:3/2}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--2x3{aspect-ratio:2/3}
.media--cut{clip-path:polygon(0 0,100% 0,100% 86%,0 100%)}
.media__caption{position:absolute;left:12px;bottom:12px;padding:5px 10px;border-radius:999px;background:rgba(6,47,62,.74);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);color:var(--paper);font-family:var(--font-mono);font-size:11px;letter-spacing:.06em}
.rail{display:flex;gap:var(--gap-s);overflow-x:auto;scroll-snap-type:x mandatory;padding:4px 16px 16px;margin:0 -16px}
.rail__item{flex:0 0 78vw;scroll-snap-align:start}
.rail__item--wide{flex-basis:88vw}

/* ---------- 12. 章节索引 / 显现 / 脉冲 ---------- */
.chapter-index__list{display:flex;flex-direction:column;gap:4px}
.chapter-link{display:flex;gap:10px;align-items:baseline;padding:8px 12px;border-left:2px solid transparent;font-size:13px;color:rgba(34,27,23,.66);transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease)}
.chapter-link:hover{color:var(--lake);background:rgba(14,110,140,.07)}
.chapter-link.is-active{color:var(--ink);font-weight:600;background:var(--sand);border-left-color:var(--sun)}
.chapter-link__idx{font-family:var(--font-mono);font-size:11px;color:var(--lake)}
.js [data-reveal]{opacity:0;transform:translateY(12px)}
.js [data-reveal].is-revealed{opacity:1;transform:none;transition:opacity .32s var(--ease),transform .32s var(--ease)}
.is-pulsed{animation:chPulse .62s var(--ease) 2}
@keyframes chPulse{0%{box-shadow:0 0 0 0 rgba(232,100,42,.55)}100%{box-shadow:0 0 0 14px rgba(232,100,42,0)}}

/* ---------- 13. 页头：玻璃命令栏 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background-image:linear-gradient(90deg,rgba(6,47,62,.95) 0%,rgba(14,110,140,.86) 100%);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line-ice);
  color:var(--paper);
}
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:calc(var(--progress,0) * 1%);
  background:linear-gradient(90deg,var(--lake),var(--flag-yellow),var(--sun));
  transition:width .12s linear;
}
.site-header__inner{
  display:flex;align-items:center;gap:14px;
  width:100%;max-width:1240px;margin:0 auto;padding:0 16px;min-height:var(--header-h);
}
.brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.brand__glyph{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:18px;height:18px;transform:rotate(45deg);border:1px solid rgba(255,255,255,.6);border-radius:4px;padding:3px}
.brand__glyph i{display:block;height:1.5px;border-radius:2px;background:var(--paper)}
.brand__glyph i:nth-child(1){background:var(--flag-yellow)}
.brand__glyph i:nth-child(3){background:var(--sun)}
.brand__text{display:flex;flex-direction:column;line-height:1.2}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:15px;letter-spacing:.16em}
.brand__line{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;color:rgba(245,239,226,.62)}
.nav-toggle{display:none;align-items:center;gap:8px;padding:7px 12px;border:1px solid var(--line-ice);border-radius:999px;font-size:12px;letter-spacing:.08em;color:var(--paper)}
.nav-toggle__bars{display:inline-flex;flex-direction:column;justify-content:center;gap:3px;width:16px}
.nav-toggle__bars i{display:block;height:1.5px;border-radius:2px;background:currentColor;transition:transform .2s var(--ease),opacity .2s var(--ease)}
.site-header[data-open] .nav-toggle__bars i:nth-child(1){transform:translateY(4.5px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bars i:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bars i:nth-child(3){transform:translateY(-4.5px) rotate(-45deg)}
.site-nav{flex:1 1 auto;min-width:0}
.site-nav__list{display:flex;align-items:center;gap:4px;overflow-x:auto;scrollbar-width:none}
.site-nav__list::-webkit-scrollbar{display:none}
.site-nav__item{flex:0 0 auto}
.site-nav__link{
  display:inline-flex;align-items:baseline;gap:6px;padding:7px 12px;border-radius:999px;
  border:1px solid transparent;font-size:12.5px;letter-spacing:.06em;white-space:nowrap;
  color:rgba(245,239,226,.78);
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.site-nav__link:hover{color:var(--ice);background:rgba(14,110,140,.55);border-color:var(--line-ice)}
.site-nav__link[aria-current="page"]{background:var(--lake);color:var(--ice);border-color:rgba(255,255,255,.4)}
.site-nav__idx{font-family:var(--font-mono);font-size:9.5px;letter-spacing:0;color:var(--flag-yellow)}
.site-nav__link[aria-current="page"] .site-nav__idx{color:var(--flag-yellow)}
.site-nav__label{display:inline-block}
.header-cta{flex:0 0 auto;font-size:12px;padding:8px 14px;white-space:nowrap}

/* ---------- 14. 移动端底部快捷路径条 ---------- */
.quick-rail{display:none}

/* ---------- 15. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:var(--gap-l);
  background-color:var(--deep);
  background-image:
    repeating-linear-gradient(90deg,rgba(245,239,226,.05) 0 1px,transparent 1px 48px),
    repeating-linear-gradient(0deg,rgba(245,239,226,.05) 0 1px,transparent 1px 48px);
  color:var(--paper);
}
.site-footer__pattern{display:block;height:4px;background:linear-gradient(90deg,var(--lake) 0 20%,var(--flag-yellow) 20% 40%,var(--sun) 40% 60%,var(--sage) 60% 80%,var(--flag-crimson) 80% 100%)}
.site-footer__inner{width:100%;max-width:1240px;margin:0 auto;padding:0 16px}
.footer__grid{display:grid;grid-template-columns:1.4fr 2.4fr 1.6fr;gap:var(--gap-m);padding:var(--gap-l) 0 var(--gap-m)}
.footer__brand{align-self:start}
.brand--footer{display:inline-flex}
.brand--footer .brand__name{font-size:18px;letter-spacing:.18em}
.brand--footer .brand__line{color:rgba(245,239,226,.6)}
.footer__sig{margin-top:16px;font-size:13px;letter-spacing:.04em;color:rgba(245,239,226,.68);max-width:20em}
.footer__motto{margin-top:8px;font-size:13px;line-height:1.7;color:rgba(245,239,226,.46);max-width:20em}
.footer__cols{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--gap-s)}
.footer-col__title{margin-bottom:14px;font-family:var(--font-mono);font-size:11px;font-weight:400;letter-spacing:.2em;color:var(--flag-yellow)}
.footer-col__list{display:flex;flex-direction:column;gap:10px}
.footer-link{display:inline-block;padding-bottom:2px;font-size:14px;color:rgba(245,239,226,.74);border-bottom:1px solid transparent;transition:color .2s var(--ease),border-color .2s var(--ease)}
.footer-link:hover{color:var(--ice);border-bottom-color:var(--sun)}
.footer-contact{align-self:start;padding:20px;border:1px solid var(--line-ice);border-radius:var(--radius);background:rgba(245,239,226,.06)}
.footer-contact__list{display:flex;flex-direction:column;gap:12px}
.footer-contact__item{display:flex;flex-direction:column;gap:2px}
.footer-contact__label{font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;color:rgba(245,239,226,.5)}
.footer-contact__value{font-family:var(--font-mono);font-size:13px;line-height:1.6;color:var(--paper);word-break:break-word}
.footer-contact__note{margin-top:14px;padding-left:10px;border-left:2px solid var(--sun);font-size:12px;line-height:1.7;color:rgba(245,239,226,.52)}
.footer__legal{display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;padding:16px 0 24px;border-top:1px solid var(--line-ice);font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:rgba(245,239,226,.55)}
.back-top{
  position:fixed;right:16px;bottom:74px;z-index:80;
  display:inline-flex;align-items:center;gap:8px;padding:10px 14px;border-radius:999px;
  background:rgba(14,110,140,.72);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  border:1px solid var(--line-ice);color:var(--ice);
  font-size:12px;letter-spacing:.08em;box-shadow:0 10px 24px rgba(6,47,62,.3);
  transition:transform .18s var(--ease),background-color .2s var(--ease);
}
.back-top[hidden]{display:none}
.back-top:hover{transform:translateY(-2px);background:rgba(14,110,140,.92)}
.back-top__arrow{font-family:var(--font-mono);color:var(--flag-yellow)}

/* ---------- 16. 响应式 ---------- */
@media (min-width:900px){
  .rail__item{flex:0 0 320px}
  .rail__item--wide{flex-basis:420px}
  .back-top{bottom:24px}
}
@media (max-width:980px){
  .footer__grid{grid-template-columns:1fr 1fr}
  .footer__brand{grid-column:1 / -1}
  .footer-contact{grid-column:1 / -1}
}
@media (max-width:900px){
  .bento{gap:var(--gap-s)}
  .bento__focus,.bento__aside,.bento__cell,.bento__cell--wide{grid-column:span 12}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;left:0;right:0;top:100%;display:none;
    padding:10px 12px 14px;
    background:rgba(6,47,62,.97);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-bottom:1px solid var(--line-ice);
  }
  .site-header[data-open] .site-nav{display:block}
  .site-nav__list{
    display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding-bottom:4px;scrollbar-width:none;
  }
  .site-nav__item{flex:0 0 58vw;scroll-snap-align:start}
  .site-nav__link{width:100%;min-height:44px;align-items:center;border-color:var(--line-ice);background:rgba(14,110,140,.28);border-radius:12px}
  .quick-rail{
    display:block;position:fixed;left:0;right:0;bottom:0;z-index:70;
    background:rgba(6,47,62,.94);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border-top:1px solid var(--line-ice);
    padding:6px 10px calc(6px + env(safe-area-inset-bottom,0px));
  }
  .quick-rail__list{display:flex;gap:8px}
  .quick-rail__item{flex:1 1 0;min-width:0}
  .quick-rail__link{
    display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
    min-height:44px;border-radius:12px;border:1px solid transparent;
    font-size:12px;letter-spacing:.04em;color:rgba(245,239,226,.86);
    transition:background-color .2s var(--ease),border-color .2s var(--ease);
  }
  .quick-rail__link:hover,.quick-rail__link:focus-visible{background:rgba(14,110,140,.55);border-color:var(--line-ice)}
  .quick-rail__idx{font-family:var(--font-mono);font-size:9px;color:var(--flag-yellow)}
  body{padding-bottom:72px}
  .back-top{bottom:74px}
}
@media (max-width:720px){
  .header-cta{display:none}
}
@media (max-width:640px){
  .footer__grid{grid-template-columns:1fr;gap:var(--gap-s);padding:var(--gap-m) 0 var(--gap-s)}
  .footer__cols{grid-template-columns:1fr 1fr}
  .footer__legal{justify-content:flex-start}
  p{font-size:15.5px}
}
@media (max-width:520px){
  .brand__line{display:none}
}

/* ---------- 17. 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}
  .js [data-reveal]{opacity:1;transform:none}
  .btn:hover,.back-top:hover{transform:none}
  .scroll-progress{transition:none}
}