/* =========================================================
   明升体育·中文站 — 共享样式 /assets/site.css
   色彩节奏：墨场黑 → 深墨绿 → 青绒深 / 纸奶白
   强调：荧光青 ｜ 轮次：琥珀金 ｜ 青训：电光紫 ｜ 戳记：红橙
   ========================================================= */

:root{
  --ink-field:#0B1512;
  --ink-green:#10241D;
  --ink-teal:#173A30;
  --paper:#F3EEE1;
  --paper-raise:#FBF7EC;
  --paper-line:#D9D2C0;
  --cyan:#2FE3C6;
  --amber:#E7A93D;
  --violet:#7A4DE0;
  --ember:#E2532B;
  --moss:#6E7F76;

  --font-serif:"Noto Serif SC","Source Han Serif SC","Songti SC","STSong","SimSun",serif;
  --font-sans:"Noto Sans SC","Source Han Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono","SFMono-Regular",Menlo,Consolas,"Courier New",monospace;

  --max:1280px;
  --gutter:clamp(16px,3.4vw,40px);
  --radius-lg:26px;
  --radius-md:16px;
  --radius-pill:999px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:200ms;
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:112px}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink-green);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
h1,h2,h3,h4,h5{margin:0;font-weight:700;line-height:1.24;letter-spacing:.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0}
li{list-style:none}
img,picture,video,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
table{width:100%;border-collapse:collapse}
:focus-visible{outline:2px solid var(--ember);outline-offset:3px;border-radius:8px}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--cyan)}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:50%;
  z-index:200;
  transform:translate(-50%,-260%);
  padding:10px 22px;
  border-radius:var(--radius-pill);
  background:var(--cyan);
  color:var(--ink-field);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus{transform:translate(-50%,0)}

/* =========================================================
   页头：悬浮胶囊导航
   ========================================================= */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  padding:clamp(10px,1.5vw,16px) var(--gutter);
  transition:padding var(--dur) var(--ease);
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:rgba(11,21,18,.72);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
  transition:background-color var(--dur) var(--ease);
}
.site-header[data-scrolled]::before{
  background:rgba(11,21,18,.95);
}
.site-header[data-scrolled]{
  padding-top:8px;
  padding-bottom:8px;
}

.header-shell{
  position:relative;
  z-index:1;
  max-width:var(--max);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,22px);
}

/* 品牌浮岛 */
.brand-island{
  flex:0 0 auto;
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:7px 16px 7px 9px;
  border-radius:var(--radius-pill);
  background:rgba(23,58,48,.94);
  border:1px solid rgba(47,227,198,.24);
  color:var(--paper);
  transition:padding var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.brand-island:hover{border-color:rgba(47,227,198,.62)}
.brand-mark{
  display:inline-flex;
  align-items:center;
  padding:5px 9px;
  border-radius:var(--radius-pill);
  background:var(--cyan);
  color:var(--ink-field);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.1em;
  white-space:nowrap;
}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{
  font-family:var(--font-serif);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--paper);
  white-space:nowrap;
}
.brand-sub{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.2em;
  color:rgba(47,227,198,.72);
  white-space:nowrap;
}
.site-header[data-scrolled] .brand-island{padding-top:4px;padding-bottom:4px}

/* 中部胶囊栏目 */
.nav-pill{
  flex:1 1 auto;
  min-width:0;
  display:flex;
  justify-content:center;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:2px;
  padding:5px;
  border-radius:var(--radius-pill);
  background:rgba(16,36,29,.92);
  border:1px solid rgba(217,210,192,.14);
}
.nav-link{
  display:inline-block;
  padding:8px clamp(10px,1.05vw,16px);
  border-radius:var(--radius-pill);
  font-size:14px;
  letter-spacing:.04em;
  color:rgba(243,238,225,.76);
  white-space:nowrap;
  transition:color 160ms var(--ease),background-color 160ms var(--ease);
}
.nav-link:hover{color:var(--paper);background:rgba(47,227,198,.12)}
.nav-link[aria-current="page"]{
  background:var(--cyan);
  color:var(--ink-field);
  font-weight:700;
}
.site-header[data-scrolled] .nav-link{padding-top:6px;padding-bottom:6px}

/* 右侧动作区 */
.header-actions{
  flex:0 0 auto;
  margin-left:auto;
  display:flex;
  align-items:center;
  gap:10px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:10px 20px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  text-align:center;
  cursor:pointer;
  transition:background-color 160ms var(--ease),color 160ms var(--ease),
             border-color 160ms var(--ease),transform 160ms var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn-accent{background:var(--cyan);color:var(--ink-field);border-color:var(--cyan)}
.btn-accent:hover{background:#54EEDA;border-color:#54EEDA}
.btn-ghost{background:transparent;color:var(--paper);border-color:rgba(226,83,43,.68)}
.btn-ghost:hover{border-color:var(--ember);color:var(--ember)}
.btn-quiet{
  background:rgba(217,210,192,.16);
  color:var(--ink-green);
  border-color:var(--paper-line);
  font-weight:400;
}
.btn-quiet:hover{background:rgba(217,210,192,.4)}

/* ---------- 移动菜单按钮 ---------- */
.nav-toggle{
  display:none;
  width:46px;
  height:40px;
  padding:0;
  border-radius:var(--radius-pill);
  background:rgba(23,58,48,.94);
  border:1px solid rgba(217,210,192,.2);
  cursor:pointer;
  place-content:center;
  align-items:center;
  justify-items:center;
}
.nav-toggle-bar{
  display:block;
  width:18px;
  height:2px;
  margin:2px auto;
  border-radius:2px;
  background:var(--paper);
  transition:background-color 160ms var(--ease);
}
.site-header[data-open] .nav-toggle{background:rgba(47,227,198,.18);border-color:rgba(47,227,198,.5)}

/* ---------- 阅读进度 ---------- */
.read-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  z-index:2;
  height:2px;
  background:rgba(217,210,192,.12);
  overflow:hidden;
}
.read-progress-fill{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--amber) 78%,var(--ember) 100%);
  transition:width 120ms linear;
}

/* =========================================================
   基础排版与布局
   ========================================================= */
.wrap{
  width:100%;
  max-width:var(--max);
  margin:0 auto;
  padding-inline:var(--gutter);
}
.mono{
  font-family:var(--font-mono);
  letter-spacing:.04em;
  font-variant-numeric:tabular-nums;
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}
.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}
.col-9{grid-column:span 9}
.col-12{grid-column:span 12}

.section{padding-block:clamp(46px,6vw,96px)}
.section--tight{padding-block:clamp(26px,4vw,56px)}
.section--dark{
  background:var(--ink-green);
  color:var(--paper);
}
.section--dark .board-body{color:rgba(243,238,225,.78)}

.hue-band{
  height:4px;
  width:100%;
  background:linear-gradient(90deg,
    var(--cyan) 0 28%,
    var(--amber) 28% 55%,
    var(--violet) 55% 79%,
    var(--ember) 79% 100%);
}

.prose{max-width:34em}
.prose p{margin:0 0 1.1em}
.prose h2,.prose h3{
  font-family:var(--font-serif);
  margin:1.6em 0 .5em;
  color:inherit;
}
.prose h2{font-size:28px}
.prose h3{font-size:20px}
.prose a{
  text-decoration:underline;
  text-decoration-color:var(--ember);
  text-underline-offset:3px;
}
.prose ul,.prose ol{
  margin:0 0 1.1em;
  padding-left:1.2em;
}
.prose li{list-style:disc;margin-bottom:.4em}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--moss);
}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:8px}
.breadcrumb li{display:flex;align-items:center;gap:8px}
.breadcrumb li+li::before{content:"/";color:var(--paper-line)}
.breadcrumb a{color:inherit;border-bottom:1px solid transparent;transition:border-color 160ms var(--ease),color 160ms var(--ease)}
.breadcrumb a:hover{color:var(--ink-green);border-bottom-color:var(--ember)}

/* ---------- 色相标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:7px;
  padding:4px 11px;
  border-radius:var(--radius-pill);
  border:1px solid currentColor;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  white-space:nowrap;
  color:var(--ink-green);
}
.tag::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background:currentColor;
  flex:0 0 auto;
}
.tag--cyan{color:#0B6F5F}
.tag--amber{color:#8A5C10}
.tag--violet{color:#5230A8}
.tag--ember{color:#B03B1C}
.board--dark .tag--cyan,
.section--dark .tag--cyan{color:var(--cyan)}
.board--dark .tag--amber,
.section--dark .tag--amber{color:var(--amber)}
.board--dark .tag--violet,
.section--dark .tag--violet{color:var(--violet)}
.board--dark .tag--ember,
.section--dark .tag--ember{color:var(--ember)}

/* ---------- 专题研究板 ---------- */
.board{
  display:flex;
  flex-direction:column;
  gap:12px;
  padding:clamp(18px,2.2vw,28px);
  border-radius:var(--radius-lg);
  background:var(--paper-raise);
  border:1px solid var(--paper-line);
}
.board--dark{
  background:var(--ink-green);
  border-color:rgba(47,227,198,.22);
  color:var(--paper);
}
.board-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:10px;
}
.board-no{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  color:var(--amber);
}
.board--dark .board-no{color:var(--cyan)}
.board-title{
  margin:0;
  font-family:var(--font-serif);
  font-size:20px;
  font-weight:700;
  line-height:1.34;
}
.board-body{
  margin:0;
  font-size:15px;
  line-height:1.8;
  color:#3B4A44;
}
.board--dark .board-body{color:rgba(243,238,225,.78)}
.board-note{
  margin:0;
  padding-left:12px;
  border-left:2px solid var(--paper-line);
  font-size:13px;
  line-height:1.72;
  color:var(--moss);
}
.board--dark .board-note{
  border-left-color:rgba(47,227,198,.42);
  color:rgba(243,238,225,.6);
}

/* ---------- 图片容器 ---------- */
.figure-frame{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 10;
  border-radius:var(--radius-lg);
  border:1px solid rgba(217,210,192,.18);
  background:linear-gradient(148deg,var(--ink-teal) 0%,var(--ink-green) 52%,var(--ink-field) 100%);
}
.figure-frame > img{
  width:100%;
  height:100%;
  object-fit:cover;
}
.figure-frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:linear-gradient(rgba(47,227,198,.09) 1px,transparent 1px);
  background-size:100% 13px;
}
.figure-frame--tall{aspect-ratio:3 / 4}
.figure-frame--wide{aspect-ratio:21 / 9}

/* ---------- 目录链接 ---------- */
.toc-link{
  display:block;
  padding:8px 0 8px 12px;
  border-left:2px solid var(--paper-line);
  font-size:13px;
  line-height:1.6;
  color:var(--moss);
  transition:color 160ms var(--ease),border-color 160ms var(--ease);
}
.toc-link:hover{color:var(--ink-green)}
.toc-link[aria-current="true"]{
  color:var(--ink-green);
  border-left-color:var(--amber);
  font-weight:700;
}
[data-section]{scroll-margin-top:112px}

/* =========================================================
   页脚
   ========================================================= */
.site-footer{
  margin-top:clamp(56px,8vw,112px);
  background:var(--ink-field);
  color:rgba(243,238,225,.8);
  font-size:14px;
}
.footer-shell{
  max-width:var(--max);
  margin:0 auto;
  padding:clamp(38px,5vw,66px) var(--gutter) 0;
  display:grid;
  grid-template-columns:minmax(0,1.35fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,3vw,44px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start;gap:0}
.brand-island--footer{
  padding:6px 14px 6px 8px;
  background:rgba(23,58,48,.6);
}
.footer-slogan{
  margin:18px 0 0;
  font-family:var(--font-serif);
  font-size:clamp(19px,2.2vw,25px);
  font-weight:700;
  line-height:1.36;
  color:var(--paper);
}
.footer-coord{
  margin:10px 0 0;
  font-size:13px;
  color:rgba(47,227,198,.7);
}
.footer-cols{display:contents}
.footer-col{min-width:0}
.footer-col-title{
  margin:0 0 16px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:400;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-list{display:grid;gap:11px}
.footer-list a{
  font-size:14px;
  color:rgba(243,238,225,.82);
  border-bottom:1px solid transparent;
  transition:color 160ms var(--ease),border-color 160ms var(--ease);
}
.footer-list a:hover{color:var(--paper);border-bottom-color:var(--ember)}
.footer-list--plain li{
  display:flex;
  align-items:center;
  gap:10px;
  font-size:14px;
  color:rgba(243,238,225,.66);
}
.footer-list--plain li::before{
  content:"";
  width:7px;
  height:7px;
  border-radius:50%;
  background:var(--moss);
  flex:0 0 auto;
}
.footer-list--plain li:nth-child(1)::before{background:var(--cyan)}
.footer-list--plain li:nth-child(2)::before{background:var(--amber)}
.footer-list--plain li:nth-child(3)::before{background:var(--violet)}
.footer-list--plain li:nth-child(4)::before{background:var(--ember)}

.footer-contact{
  max-width:var(--max);
  margin:clamp(30px,4vw,52px) auto 0;
  padding:clamp(20px,2.6vw,30px) var(--gutter);
  border-top:1px solid rgba(217,210,192,.16);
  border-bottom:1px solid rgba(217,210,192,.16);
  display:grid;
  grid-template-columns:minmax(0,1.7fr) minmax(0,1fr);
  gap:20px 36px;
  align-items:start;
}
.contact-list{display:grid;gap:11px}
.contact-list li{display:flex;flex-wrap:wrap;gap:5px 14px;align-items:baseline}
.contact-key{
  min-width:5.4em;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
  color:var(--cyan);
}
.contact-value{color:rgba(243,238,225,.85)}
.contact-note{
  margin:0;
  font-size:13px;
  line-height:1.76;
  color:rgba(243,238,225,.55);
}

.footer-legal{
  max-width:var(--max);
  margin:0 auto;
  padding:22px var(--gutter) clamp(26px,3vw,40px);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 26px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:rgba(243,238,225,.5);
}
.footer-legal p{margin:0}
.legal-links{display:flex;flex-wrap:wrap;gap:18px;margin-left:auto}
.legal-links a{
  border-bottom:1px solid transparent;
  transition:color 160ms var(--ease),border-color 160ms var(--ease);
}
.legal-links a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* =========================================================
   响应式
   ========================================================= */
@media (max-width:1080px){
  .nav-toggle{display:grid}
  .header-cta{display:none}
  .nav-pill{
    position:absolute;
    top:calc(100% + 10px);
    left:0;
    right:0;
    display:none;
    justify-content:stretch;
  }
  .site-header[data-open] .nav-pill{display:block}
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:2px;
    padding:10px;
    border-radius:22px;
    background:rgba(11,21,18,.98);
    border-color:rgba(217,210,192,.18);
  }
  .nav-link,
  .site-header[data-scrolled] .nav-link{
    display:block;
    padding:13px 16px;
    font-size:15px;
    border-radius:14px;
  }

  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr));gap:20px}
  .col-3,.col-4,.col-5{grid-column:span 2}
  .col-6{grid-column:span 3}
  .col-7,.col-8,.col-9{grid-column:span 4}

  .footer-shell{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-brand{grid-column:1 / -1}
  .footer-contact{grid-template-columns:1fr}
}

@media (max-width:720px){
  .brand-sub{display:none}
  .brand-name{font-size:14px}
  .brand-island{padding:6px 12px 6px 8px}
  .site-header[data-scrolled] .brand-island{padding-top:4px;padding-bottom:4px}

  .section{padding-block:clamp(34px,7vw,52px)}
  .board-title{font-size:18px}
  .prose h2{font-size:23px}

  .footer-legal{flex-direction:column;align-items:flex-start;gap:10px}
  .legal-links{margin-left:0}
  .footer-slogan{font-size:19px}
}

@media (max-width:640px){
  .grid-12{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .col-3,.col-4,.col-5,.col-6,.col-7,.col-8,.col-9{grid-column:span 2}
  .footer-shell{grid-template-columns:1fr;gap:30px}
  .figure-frame{aspect-ratio:4 / 3}
}

/* ---------- 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;
  }
  .read-progress-fill{transition:none}
}