/* =========================================================
   球王会主页 · /assets/site.css
   共享层：reset / tokens / 中文排版 / 头部 / 页脚 /
   按钮 / 面包屑 / 容器 / 栅格 / 基础组件 / 响应式
   ========================================================= */

/* ---------- 0. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;}
body{margin:0;}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;}
ul,ol{padding:0;list-style:none;}
img,picture,svg,video{display:block;max-width:100%;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
table{border-collapse:collapse;width:100%;}
hr{border:0;}
[hidden]{display:none !important;}

/* ---------- 1. Tokens ---------- */
:root{
  --ink-900:#0A0F1C;
  --ink-850:#0D1524;
  --ink-800:#121A2E;
  --line-600:#2A3A5C;

  --turf:#B6FF3B;
  --amber:#FFB703;
  --signal:#FF3B30;
  --wine:#7A1F3D;
  --violet:#4C1D95;

  --paper:#EAF0F6;
  --body-text:#D6DFEA;
  --mute:#9AA7B8;

  --font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",Georgia,"Times New Roman",serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",Inter,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:1240px;
  --shell-narrow:820px;
  --gutter:20px;

  --radius-pill:999px;
  --radius-s:6px;
  --radius-m:14px;

  --border:2px solid var(--line-600);
  --shadow-hard:8px 8px 0 0 rgba(10,15,28,.85);
  --shadow-soft:0 22px 60px -26px rgba(0,0,0,.92);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 基础与中文排版 ---------- */
body{
  background-color:var(--ink-900);
  background-image:
    linear-gradient(rgba(42,58,92,.20) 1px,transparent 1px),
    linear-gradient(90deg,rgba(42,58,92,.20) 1px,transparent 1px);
  background-size:88px 88px;
  background-position:center top;
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  font-weight:400;
  line-height:1.75;
  letter-spacing:.01em;
  overflow-x:hidden;
  min-height:100vh;
}

h1,h2,h3,h4,h5,h6{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.16;
  letter-spacing:-.012em;
  color:var(--paper);
  text-wrap:balance;
}
h1{font-size:clamp(2.2rem,5.4vw,3.9rem);}
h2{font-size:clamp(1.7rem,3.4vw,2.55rem);}
h3{font-size:clamp(1.18rem,2.1vw,1.55rem);}
h4{font-size:1.02rem;}

p{text-wrap:pretty;}
p,li,dd{color:var(--body-text);}
strong{color:var(--paper);font-weight:700;}
::selection{background:var(--turf);color:var(--ink-900);}

:focus-visible{outline:3px solid var(--turf);outline-offset:3px;border-radius:4px;}

/* ---------- 3. 通用容器与栅格 ---------- */
.shell{width:100%;max-width:var(--shell);margin-inline:auto;padding-inline:var(--gutter);}
.shell--narrow{max-width:var(--shell-narrow);}

.section{position:relative;padding:88px 0;}
.section--tight{padding:48px 0;}
.section--wide{padding:120px 0;}
.section--console{background:var(--ink-800);border-block:var(--border);}
.section--wine{background:linear-gradient(120deg,var(--wine),#4C1228);border-block:var(--border);}
.section--violet{background:linear-gradient(120deg,#3A1673,var(--violet));border-block:var(--border);}

.section-head{max-width:760px;margin-bottom:44px;}

.grid{display:grid;gap:24px;}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr));}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(min(100%,260px),1fr));}
.grid--split{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);align-items:start;}

.rule{height:2px;background:var(--line-600);border:0;}
.rule--turf{background:var(--turf);}

/* ---------- 4. 文字层级组件 ---------- */
.display{font-family:var(--font-display);font-weight:900;font-size:clamp(2.7rem,7.6vw,5.6rem);line-height:1.02;letter-spacing:-.026em;}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:.74rem;font-weight:700;
  letter-spacing:.22em;text-transform:uppercase;color:var(--turf);
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--turf);flex:none;}

.lede{font-size:clamp(1.02rem,1.6vw,1.2rem);line-height:1.7;color:var(--paper);max-width:62ch;}
.note{font-size:.8rem;line-height:1.65;color:var(--mute);}

.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em;}

.chapter-index{
  display:inline-block;font-family:var(--font-mono);font-size:.76rem;font-weight:700;
  letter-spacing:.2em;color:var(--amber);
  border:2px solid var(--line-600);border-radius:var(--radius-pill);
  padding:3px 13px;background:rgba(255,183,3,.06);
}

.tag{
  display:inline-block;font-family:var(--font-mono);font-size:.7rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;
  padding:4px 10px;border:1px solid var(--line-600);border-radius:var(--radius-s);
  color:var(--amber);background:rgba(255,183,3,.08);
}
.tag--turf{color:var(--turf);border-color:rgba(182,255,59,.5);background:rgba(182,255,59,.08);}
.tag--signal{color:var(--signal);border-color:rgba(255,59,48,.55);background:rgba(255,59,48,.1);}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-body);font-size:.86rem;font-weight:700;letter-spacing:.02em;
  padding:10px 19px;border-radius:var(--radius-pill);
  border:2px solid transparent;white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease),
             box-shadow .18s var(--ease);
}
.btn--solid{background:var(--turf);color:#07100A;border-color:var(--turf);box-shadow:0 12px 28px -16px rgba(182,255,59,.9);}
.btn--solid:hover{background:#CBFF66;border-color:#CBFF66;transform:translateY(-1px);}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line-600);}
.btn--ghost:hover{border-color:var(--amber);color:var(--amber);transform:translateY(-1px);}
.btn--amber{background:var(--amber);color:#1A1200;border-color:var(--amber);}
.btn--amber:hover{background:#FFC733;transform:translateY(-1px);}
.btn--block{width:100%;}

/* ---------- 6. 面板 / 展签 / 指标 ---------- */
.panel{
  background:var(--ink-800);border:var(--border);
  box-shadow:var(--shadow-hard);padding:24px;
}
.panel--wine{background:linear-gradient(140deg,var(--wine),#54152B);}
.panel--violet{background:linear-gradient(140deg,#3A1673,var(--violet));}

.plate{
  border-left:5px solid var(--turf);
  background:rgba(18,26,46,.92);
  border-block:var(--border);border-right:var(--border);
  padding:20px 22px;box-shadow:6px 6px 0 0 rgba(42,58,92,.5);
}

.stat-grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(min(100%,170px),1fr));}
.stat{
  background:var(--ink-800);border:var(--border);padding:18px 18px 16px;
  display:flex;flex-direction:column;gap:6px;
}
.stat__value{font-family:var(--font-mono);font-variant-numeric:tabular-nums;font-size:clamp(1.7rem,3.6vw,2.5rem);font-weight:700;line-height:1;color:var(--turf);letter-spacing:-.03em;}
.stat__label{font-size:.78rem;color:var(--mute);letter-spacing:.04em;}

/* ---------- 7. 图片容器（页面阶段放图） ---------- */
.media{
  position:relative;border:var(--border);background:var(--ink-800);
  box-shadow:10px 10px 0 0 rgba(42,58,92,.34);overflow:hidden;
}
.media__frame{
  position:relative;display:block;aspect-ratio:16/9;overflow:hidden;
  background-image:
    radial-gradient(120% 90% at 28% 12%,#16324A 0%,#060A12 72%),
    linear-gradient(rgba(42,58,92,.45) 1px,transparent 1px),
    linear-gradient(90deg,rgba(42,58,92,.45) 1px,transparent 1px);
  background-size:auto,64px 64px,64px 64px;
}
.media__img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.media--tall .media__frame{aspect-ratio:4/5;}
.media--square .media__frame{aspect-ratio:1/1;}
.media__caption{
  display:block;padding:12px 16px;border-top:var(--border);
  background:var(--ink-800);font-size:.78rem;color:var(--mute);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{padding:24px 0 0;}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:6px;font-family:var(--font-mono);font-size:.76rem;letter-spacing:.06em;}
.breadcrumb__item{display:flex;align-items:center;gap:6px;color:var(--mute);}
.breadcrumb__item::after{content:"/";color:var(--line-600);}
.breadcrumb__item:last-child::after{content:"";}
.breadcrumb__link{color:var(--mute);transition:color .18s var(--ease);}
.breadcrumb__link:hover{color:var(--turf);}
.breadcrumb__current{color:var(--paper);}

/* ---------- 9. 标签页 ---------- */
.tabs{border:var(--border);background:rgba(18,26,46,.6);padding:18px;}
.tabs__list{display:flex;flex-wrap:wrap;gap:8px;border-bottom:var(--border);padding-bottom:14px;margin-bottom:4px;}
.tabs__tab{
  font-family:var(--font-mono);font-size:.76rem;font-weight:700;letter-spacing:.12em;
  padding:9px 16px;border:2px solid var(--line-600);border-radius:var(--radius-pill);
  color:var(--mute);transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.tabs__tab:hover{color:var(--paper);border-color:var(--amber);}
.tabs__tab[aria-selected="true"]{background:var(--turf);border-color:var(--turf);color:#07100A;}
.tabs__panel{padding:20px 2px 4px;}

/* ---------- 10. 折叠面板 ---------- */
.disclosure{border:var(--border);background:var(--ink-800);margin-bottom:12px;}
.disclosure__trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-family:var(--font-body);
  font-size:1rem;font-weight:700;color:var(--paper);
}
.disclosure__trigger:hover{color:var(--turf);}
.disclosure__mark{font-family:var(--font-mono);font-size:1.1rem;color:var(--turf);flex:none;}
.disclosure__trigger[aria-expanded="true"] .disclosure__mark{color:var(--amber);}
.disclosure__panel{padding:0 20px 20px;font-size:.94rem;color:var(--body-text);}

/* ---------- 11. 滚动显现 ---------- */
[data-reveal]{opacity:0;transform:translateY(18px);transition:opacity .6s var(--ease),transform .6s var(--ease);}
[data-reveal].is-in{opacity:1;transform:none;}

/* ---------- 12. Skip link ---------- */
.skip-link{
  position:absolute;left:16px;top:-70px;z-index:200;
  background:var(--turf);color:#07100A;font-weight:700;font-size:.86rem;
  padding:10px 18px;border-radius:0 0 12px 12px;
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0;}

/* ---------- 13. 头部 ---------- */
.site-header{position:sticky;top:0;z-index:80;padding:14px 16px 0;}
.header-rail{width:100%;max-width:var(--shell);margin-inline:auto;}

.capsule{
  position:relative;display:flex;align-items:center;gap:18px;
  background:rgba(18,26,46,.94);
  border:var(--border);border-radius:var(--radius-pill);
  padding:10px 12px 10px 20px;
  box-shadow:0 20px 48px -26px rgba(0,0,0,.95),inset 0 0 0 1px rgba(182,255,59,.05);
}
@supports (backdrop-filter: blur(12px)){
  .capsule{backdrop-filter:blur(12px);}
}

.brand{display:inline-flex;align-items:center;gap:12px;flex:none;}
.brand__pulse{
  width:12px;height:12px;border-radius:50%;background:var(--turf);flex:none;
  box-shadow:0 0 0 5px rgba(182,255,59,.16),0 0 16px 2px rgba(182,255,59,.55);
  animation:pulse 2.6s infinite var(--ease);
}
@keyframes pulse{
  0%,100%{box-shadow:0 0 0 5px rgba(182,255,59,.16),0 0 16px 2px rgba(182,255,59,.55);}
  50%{box-shadow:0 0 0 9px rgba(182,255,59,.06),0 0 22px 4px rgba(182,255,59,.35);}
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-family:var(--font-display);font-weight:900;font-size:1.02rem;letter-spacing:.01em;color:var(--paper);}
.brand__line{font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;color:var(--mute);}

.nav{margin-left:auto;}
.nav__list{display:flex;align-items:center;gap:2px;}
.nav__item{display:block;}
.nav__link{
  display:inline-block;padding:8px 13px;border-radius:var(--radius-pill);
  font-size:.89rem;font-weight:500;color:#B9C6D6;
  transition:color .18s var(--ease),background-color .18s var(--ease),box-shadow .18s var(--ease);
}
.nav__link:hover{color:var(--paper);background:rgba(182,255,59,.10);}
.nav__link[aria-current="page"]{
  color:#07100A;background:var(--turf);font-weight:700;
  box-shadow:0 0 0 2px rgba(182,255,59,.22);
}

.header-actions{display:flex;align-items:center;gap:10px;flex:none;}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  border:2px solid var(--line-600);border-radius:var(--radius-pill);
  padding:8px 14px;color:var(--paper);flex:none;
}
.nav-toggle__bars{position:relative;display:block;width:18px;height:12px;flex:none;}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";position:absolute;left:0;right:0;height:2px;background:var(--turf);
  transition:transform .2s var(--ease);
}
.nav-toggle__bars::before{top:0;}
.nav-toggle__bars::after{bottom:0;}
.nav-toggle__label{font-family:var(--font-mono);font-size:.7rem;font-weight:700;letter-spacing:.16em;}

.site-header[data-open] .nav-toggle{border-color:var(--turf);}
.site-header[data-open] .nav-toggle__bars::before{transform:translateY(5px) rotate(45deg);}
.site-header[data-open] .nav-toggle__bars::after{transform:translateY(-5px) rotate(-45deg);}

.header-progress{
  height:3px;margin-top:9px;border-radius:var(--radius-pill);
  background:rgba(42,58,92,.6);overflow:hidden;
}
.header-progress__fill{
  display:block;height:100%;width:0;border-radius:var(--radius-pill);
  background:linear-gradient(90deg,var(--turf),var(--amber));
  transition:width .12s linear;
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  margin-top:96px;
  background:linear-gradient(180deg,var(--ink-800) 0%,#070B14 68%);
  border-top:var(--border);
  position:relative;
}

.footer-board{
  background:linear-gradient(100deg,var(--wine) 0%,var(--violet) 78%);
  border-bottom:var(--border);overflow:hidden;
}
.footer-board__track{display:flex;flex-wrap:wrap;width:100%;max-width:var(--shell);margin-inline:auto;}
.footer-board__item{
  font-family:var(--font-mono);font-size:.68rem;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:rgba(234,240,246,.86);
  padding:10px 20px;border-left:1px solid rgba(234,240,246,.18);
}
.footer-board__item:first-child{border-left:0;}

.footer-grid{
  display:grid;gap:36px 32px;padding-top:56px;padding-bottom:44px;
  grid-template-columns:1.5fr 1fr 1fr 1fr 1.4fr;
}

.footer-brand__name{font-family:var(--font-display);font-weight:900;font-size:1.24rem;color:var(--paper);}
.footer-brand__line{
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.14em;color:var(--amber);
  margin-top:6px;
}
.footer-brand__note{font-size:.82rem;color:var(--mute);margin-top:14px;line-height:1.7;max-width:34ch;}

.footer-col__title{
  font-family:var(--font-mono);font-size:.72rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--turf);margin-bottom:16px;
}
.footer-col__list{display:flex;flex-direction:column;gap:10px;}
.footer-col__link{
  font-size:.88rem;color:#B9C6D6;transition:color .18s var(--ease),padding-left .18s var(--ease);
  display:inline-block;
}
.footer-col__link:hover{color:var(--turf);padding-left:5px;}

.footer-contact__title{
  font-family:var(--font-mono);font-size:.72rem;font-weight:700;letter-spacing:.18em;
  text-transform:uppercase;color:var(--amber);margin-bottom:16px;
}
.footer-contact__line{display:flex;flex-wrap:wrap;gap:8px;font-size:.84rem;margin-bottom:9px;}
.footer-contact__label{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.14em;
  color:var(--mute);border:1px solid var(--line-600);border-radius:4px;
  padding:1px 7px;align-self:flex-start;margin-top:3px;flex:none;
}
.footer-contact__value{color:var(--paper);word-break:break-word;}
.footer-contact__note{font-size:.76rem;color:var(--mute);margin-top:14px;line-height:1.7;max-width:36ch;}

.footer-legal{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:12px 26px;padding-top:20px;padding-bottom:30px;
  border-top:2px solid var(--line-600);
}
.footer-legal__copy,
.footer-legal__icp{font-family:var(--font-mono);font-size:.73rem;color:var(--mute);letter-spacing:.06em;}
.footer-legal__links{display:flex;flex-wrap:wrap;gap:18px;}
.footer-legal__link{font-family:var(--font-mono);font-size:.73rem;color:var(--mute);transition:color .18s var(--ease);}
.footer-legal__link:hover{color:var(--turf);}

.to-top{
  position:fixed;right:18px;bottom:18px;z-index:90;
  width:46px;height:46px;border-radius:50%;
  background:var(--amber);color:#1A1200;font-family:var(--font-mono);
  font-size:1.05rem;font-weight:700;border:2px solid #1A1200;
  box-shadow:0 14px 30px -14px rgba(0,0,0,.95);
  opacity:0;transform:translateY(10px);pointer-events:none;
  transition:opacity .2s var(--ease),transform .2s var(--ease),background-color .2s var(--ease);
}
.to-top[data-shown]{opacity:1;transform:none;pointer-events:auto;}
.to-top:hover{background:#FFC733;}

/* ---------- 15. 响应式 ---------- */
@media (max-width:1140px){
  .header-actions .btn--ghost{display:none;}
}

@media (max-width:1024px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-brand{grid-column:1 / -1;}
  .footer-contact{grid-column:1 / -1;}
}

@media (max-width:960px){
  .site-header{padding:12px 12px 0;}
  .capsule{flex-wrap:wrap;border-radius:22px;padding:10px 12px;gap:12px;}
  .brand{margin-right:auto;}
  .nav{
    display:none;position:absolute;left:-2px;right:-2px;top:calc(100% + 10px);
    margin-left:0;background:var(--ink-800);border:var(--border);border-radius:18px;
    padding:12px;box-shadow:var(--shadow-soft);z-index:5;
  }
  .site-header[data-open] .nav{display:block;}
  .nav__list{flex-direction:column;align-items:stretch;gap:4px;}
  .nav__link{display:block;padding:12px 15px;border-radius:12px;font-size:.95rem;}
  .nav__link[aria-current="page"]{box-shadow:none;}
  .header-actions{display:none;}
  .nav-toggle{display:inline-flex;}
  .section{padding:64px 0;}
  .section--wide{padding:80px 0;}
  .grid--split{grid-template-columns:minmax(0,1fr);}
  .site-footer{margin-top:72px;}
  .footer-grid{padding-top:44px;padding-bottom:36px;}
}

@media (max-width:640px){
  :root{--gutter:16px;}
  body{background-size:56px 56px;}
  .footer-board__item{padding:9px 14px;font-size:.64rem;}
  .footer-grid{grid-template-columns:minmax(0,1fr);gap:32px;}
  .footer-legal{flex-direction:column;align-items:flex-start;gap:10px;}
  .brand__line{display:none;}
  .tabs{padding:14px;}
}

/* ---------- 16. 动效可访问性 ---------- */
@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;transform:none;}
  .brand__pulse{animation:none;}
}