/* ===========================================================
   半岛体育中文站 · 共享外壳样式 /assets/site.css
   堆叠面板 · 框景首屏 · 双层导航 · 夜场矿物色
   =========================================================== */

:root{
  /* 色彩 · 深海蓝 / 球场绿 / 琥珀 */
  --ink:#061726;
  --ink-2:#0A2136;
  --panel:#0D2A44;
  --brand:#1E8F63;
  --brand-bright:#3FB98A;
  --moss:#52785F;
  --amber:#F5A83B;
  --slate:#7E8FA3;
  --hair:#29323C;
  --clay:#C0715A;
  --paper:#F3F0E7;
  --text:#E8EEF4;
  --text-2:rgba(232,238,244,.74);
  --text-3:rgba(232,238,244,.54);

  /* 排版 */
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:ui-monospace,"JetBrains Mono","IBM Plex Mono",SFMono-Regular,Consolas,"Liberation Mono",monospace;

  /* 度量 */
  --shell:1320px;
  --gutter:clamp(16px,4vw,40px);
  --gap:clamp(16px,2.4vw,24px);
  --section-gap:clamp(48px,7vw,96px);
  --dock-h:56px;
  --line:1px solid var(--hair);
  --shadow:0 2px 8px rgba(0,0,0,.38);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  padding-bottom:var(--dock-h);
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.75;
  letter-spacing:.005em;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:
    radial-gradient(120% 80% at 78% -10%,rgba(30,143,99,.16),transparent 60%),
    radial-gradient(90% 60% at 0% 100%,rgba(245,168,59,.06),transparent 60%),
    linear-gradient(180deg,#061726,#04101c 100%);
}
img,svg,video{display:block;max-width:100%}
h1,h2,h3,h4,h5{margin:0;font-weight:500;line-height:1.2;letter-spacing:-.01em;color:var(--text)}
p{margin:0}
ul,ol{margin:0;padding:0}
a{color:var(--brand-bright);text-decoration:none;transition:color .18s var(--ease),border-color .18s var(--ease)}
a:hover{color:var(--text)}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--brand-bright);outline-offset:2px}
::selection{background:rgba(245,168,59,.28);color:#fff}

.skip-link{
  position:absolute;left:14px;top:-120px;z-index:120;
  background:var(--amber);color:#0b1620;padding:10px 16px;
  font-size:13px;letter-spacing:.08em;transition:top .2s var(--ease);
}
.skip-link:focus{top:14px;color:#0b1620}

.container{width:100%;max-width:var(--shell);margin:0 auto;padding:0 var(--gutter)}

/* ---------- 顶部阅读进度 ---------- */
.scroll-progress{position:fixed;left:0;right:0;top:0;height:2px;z-index:90;background:transparent;pointer-events:none}
.scroll-progress__bar{display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;background:linear-gradient(90deg,var(--brand),var(--brand-bright) 55%,var(--amber))}

/* ---------- 头部 · 双层信息导航 ---------- */
.site-header{position:sticky;top:0;z-index:100;background:rgba(6,23,38,.95);backdrop-filter:blur(10px);border-bottom:var(--line)}
.header-upper{max-height:120px;overflow:hidden;border-bottom:var(--line);transition:max-height .3s var(--ease),opacity .24s var(--ease)}
.site-header[data-collapsed="true"] .header-upper{max-height:0;opacity:0;border-bottom-color:transparent}
.header-upper__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}

.brand{min-width:0}
.brand__link{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand__link:hover{color:var(--text)}
.brand__mark{
  flex:0 0 auto;width:38px;height:38px;display:grid;place-items:center;
  border:1px solid var(--hair);background:linear-gradient(150deg,var(--panel),rgba(30,143,99,.24));
  color:var(--brand-bright);font-family:var(--font-mono);font-size:17px;line-height:1;
}
.brand__text{display:block;min-width:0}
.brand__name{display:block;font-size:15px;letter-spacing:.04em;color:var(--text)}
.brand__tagline{display:block;font-size:12px;letter-spacing:.08em;color:var(--text-3);line-height:1.5}

.header-status{display:flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.12em;color:var(--text-3);white-space:nowrap}
.status-dot{width:7px;height:7px;border-radius:50%;background:var(--brand-bright);box-shadow:0 0 0 4px rgba(63,185,138,.12);animation:pulse 1.6s ease-in-out infinite}
@keyframes pulse{0%,100%{filter:brightness(1)}50%{filter:brightness(1.35)}}
.status-label{color:var(--text-3)}
.status-value{color:var(--amber);font-size:13px}

.header-lower__inner{display:flex;align-items:center;gap:0;min-height:52px}
.nav-toggle{
  display:none;align-items:center;gap:8px;padding:9px 12px;
  background:transparent;border:1px solid var(--hair);color:var(--text-2);
  font-size:12px;letter-spacing:.18em;cursor:pointer;
}
.nav-toggle__bars{display:grid;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:1px;background:currentColor}
.nav-toggle[aria-expanded="true"]{border-color:var(--amber);color:var(--amber)}

.main-nav{flex:1 1 auto;min-width:0;overflow-x:auto;overflow-y:hidden;scroll-snap-type:x proximity;-webkit-overflow-scrolling:touch}
.main-nav::-webkit-scrollbar{height:3px}
.main-nav::-webkit-scrollbar-thumb{background:var(--hair)}
.main-nav__list{display:flex;align-items:stretch;list-style:none;scroll-snap-type:x proximity}
.main-nav__list > li{scroll-snap-align:start}
.main-nav__list > li + li{border-left:var(--line)}

.nav-link{
  position:relative;display:block;padding:17px 20px;
  font-size:14px;letter-spacing:.06em;color:var(--text-2);white-space:nowrap;
}
.nav-link::after{
  content:"";position:absolute;left:16px;right:16px;bottom:0;height:2px;
  background:var(--amber);transform:scaleX(0);transform-origin:0 50%;
  transition:transform .22s var(--ease);
}
.nav-link:hover{color:var(--text);background:rgba(126,143,163,.08)}
.nav-link[aria-current="page"]{color:var(--text);background:rgba(30,143,99,.12)}
.nav-link[aria-current="page"]::after{transform:scaleX(1)}

.header-utility{display:flex;align-items:center;gap:8px;padding-left:12px;border-left:var(--line)}
.icon-btn{
  display:inline-flex;align-items:center;gap:6px;padding:8px 11px;
  background:transparent;border:1px solid var(--hair);color:var(--text-2);
  font-size:12px;letter-spacing:.14em;cursor:pointer;
  transition:border-color .18s var(--ease),color .18s var(--ease),background .18s var(--ease);
}
.icon-btn:hover{border-color:var(--slate);color:var(--text)}
.icon-btn__glyph{font-size:12px;line-height:1}
.icon-btn__text{line-height:1}
.collect-btn[aria-pressed="true"]{border-color:var(--amber);color:var(--amber);background:rgba(245,168,59,.1)}
.download-link{color:var(--brand-bright);border-color:rgba(63,185,138,.4)}
.download-link:hover{background:rgba(30,143,99,.16);border-color:var(--brand-bright);color:var(--brand-bright)}

/* ---------- 排版构件 ---------- */
.display-title{font-size:clamp(2.8rem,6vw,5.4rem);font-weight:300;letter-spacing:-.02em;line-height:1.04}
.section-title{font-size:clamp(24px,3vw,32px);font-weight:500;margin-top:10px}
.index-label{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--text-3)}
.label{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--text-3)}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:-.01em;font-feature-settings:"tnum" 1}
.num--amber{color:var(--amber)}
.lede{font-size:clamp(17px,1.4vw,19px);line-height:1.8;color:var(--text-2);max-width:62ch}
.note{font-size:13.5px;line-height:1.7;color:var(--text-3)}
.text-dim{color:var(--text-2)}
.text-mute{color:var(--text-3)}

/* ---------- 章节与容器 ---------- */
.section{padding:var(--section-gap) 0}
.section--tight{padding:calc(var(--section-gap) * .58) 0}
.section--paper{background:var(--paper);color:#152430}
.section--paper h1,.section--paper h2,.section--paper h3{color:#101d28}
.section--paper .lede,.section--paper p{color:#33424f}
.section--paper .index-label,.section--paper .label{color:#6b7a86}
.section--paper .rule{background:#c9c3b4}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:clamp(20px,3vw,36px)}
.rule{height:1px;background:var(--hair);border:0;margin:0}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:var(--gap)}
.rail{grid-column:span 4;min-width:0}
.rail--sticky{position:sticky;top:calc(var(--dock-h) + 76px);align-self:start}
.content-col{grid-column:span 8;min-width:0}
.stack{display:grid;gap:var(--gap)}
.stack--tight{display:grid;gap:12px}

/* ---------- 堆叠面板 ---------- */
.panel{
  position:relative;background:var(--panel);border:var(--line);
  box-shadow:var(--shadow);padding:clamp(20px,3vw,36px);
}
.panel--flush{padding:0}
.panel--paper{background:var(--paper);color:#152430;border-color:#cfc9ba}
.panel--paper h2,.panel--paper h3{color:#101d28}
.panel--paper p,.panel--paper .lede{color:#33424f}
.panel__head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;padding-bottom:14px;border-bottom:var(--line)}
.panel--paper .panel__head{border-bottom-color:#cfc9ba}
.panel__body{padding-top:16px}
.panel__foot{margin-top:20px;padding-top:14px;border-top:var(--line);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px}
.panel-index{font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;color:var(--amber)}

.tick-frame{position:relative}
.tick-frame::before,
.tick-frame::after{content:"";position:absolute;width:14px;height:14px;pointer-events:none}
.tick-frame::before{top:-1px;left:-1px;border-top:1px solid var(--amber);border-left:1px solid var(--amber)}
.tick-frame::after{bottom:-1px;right:-1px;border-bottom:1px solid var(--amber);border-right:1px solid var(--amber)}
.tick-frame__marks{position:absolute;inset:0;pointer-events:none}
.tick-frame__marks::before,
.tick-frame__marks::after{content:"";position:absolute;width:14px;height:14px}
.tick-frame__marks::before{top:-1px;right:-1px;border-top:1px solid var(--amber);border-right:1px solid var(--amber)}
.tick-frame__marks::after{bottom:-1px;left:-1px;border-bottom:1px solid var(--amber);border-left:1px solid var(--amber)}

/* ---------- 图片容器（页面阶段放置素材） ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;border:var(--line);
  background:linear-gradient(160deg,#0D2A44 0%,#061726 70%);
  aspect-ratio:16 / 9;
}
.media-frame--wide{aspect-ratio:24 / 9}
.media-frame--portrait{aspect-ratio:4 / 5}
.media-frame--strip{aspect-ratio:32 / 9}
.media-frame > img,
.media-frame > picture,
.media-frame > picture > img{width:100%;height:100%;object-fit:cover;display:block}
.media-frame--placeholder{
  background:
    repeating-linear-gradient(135deg,rgba(126,143,163,.16) 0 1px,transparent 1px 12px),
    linear-gradient(160deg,#0D2A44 0%,#061726 70%);
}
.media-frame--placeholder::after{
  content:"";position:absolute;left:14px;bottom:14px;width:46px;height:1px;background:var(--amber);
}
.media-frame__caption{
  margin-top:10px;font-size:12px;letter-spacing:.12em;color:var(--text-3);
}

/* ---------- 卡片 / 数据带 / 标签 ---------- */
.card{background:var(--panel);border:var(--line);box-shadow:var(--shadow);padding:clamp(16px,2vw,24px)}
.card__title{font-size:17px;font-weight:500;letter-spacing:.01em}
.card__meta{font-size:12px;letter-spacing:.14em;color:var(--text-3);margin-top:4px}
.card:hover{border-color:var(--slate)}
.data-band{
  background:linear-gradient(180deg,rgba(126,143,163,.18),rgba(126,143,163,.06));
  border-left:2px solid var(--brand);padding:14px 16px;
}
.data-band .num{font-size:20px;color:var(--text)}
.tag{
  display:inline-flex;align-items:center;gap:6px;padding:4px 9px;
  border:1px solid var(--hair);font-size:11px;letter-spacing:.16em;
  color:var(--text-2);background:rgba(126,143,163,.08);
}
.tag--amber{border-color:rgba(245,168,59,.5);color:var(--amber);background:rgba(245,168,59,.08)}
.tag--brand{border-color:rgba(63,185,138,.5);color:var(--brand-bright);background:rgba(30,143,99,.1)}
.tag--clay{border-color:rgba(192,113,90,.55);color:var(--clay);background:rgba(192,113,90,.08)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;background:transparent;border:1px solid var(--hair);
  color:var(--text);font-size:14px;letter-spacing:.06em;cursor:pointer;
  transition:background .18s var(--ease),border-color .18s var(--ease),color .18s var(--ease);
}
.btn:hover{border-color:var(--slate);background:rgba(126,143,163,.1);color:var(--text)}
.btn--primary{background:var(--brand);border-color:var(--brand);color:#04150f}
.btn--primary:hover{background:var(--brand-bright);border-color:var(--brand-bright);color:#04150f}
.btn--ghost{border-color:var(--hair);color:var(--text-2)}
.btn--amber{border-color:rgba(245,168,59,.6);color:var(--amber)}
.btn--amber:hover{background:rgba(245,168,59,.12);color:var(--amber)}
.btn--small{padding:8px 14px;font-size:12px;letter-spacing:.14em}

/* ---------- 面包屑 ---------- */
.breadcrumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;list-style:none;font-size:12px;letter-spacing:.12em;color:var(--text-3)}
.breadcrumbs li{display:inline-flex;align-items:center;gap:8px}
.breadcrumbs li + li::before{content:"/";color:var(--hair)}
.breadcrumbs a{color:var(--text-3)}
.breadcrumbs a:hover{color:var(--brand-bright)}
.breadcrumbs [aria-current="page"]{color:var(--text-2)}

/* ---------- 折叠内容组 ---------- */
.disclosure{border:var(--line);background:var(--panel);box-shadow:var(--shadow)}
.disclosure + .disclosure{margin-top:12px}
.disclosure__trigger{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 18px;background:transparent;border:0;text-align:left;
  font-size:16px;letter-spacing:.02em;color:var(--text);cursor:pointer;
}
.disclosure__trigger:hover{background:rgba(126,143,163,.08)}
.disclosure__arrow{flex:0 0 auto;font-family:var(--font-mono);font-size:13px;color:var(--amber);transition:transform .22s var(--ease)}
.disclosure[data-open="true"] .disclosure__arrow{transform:rotate(90deg)}
.disclosure[data-open="true"]{border-color:rgba(245,168,59,.4)}
.disclosure__panel{padding:0 18px 18px;border-top:var(--line)}
.disclosure__panel p{color:var(--text-2);max-width:70ch}

/* ---------- 显现 ---------- */
html.js [data-reveal]{opacity:0;transform:translateY(8px)}
html.js [data-reveal].is-visible{opacity:1;transform:none;transition:opacity .18s var(--ease),transform .18s var(--ease)}

/* ---------- 页脚 ---------- */
.site-footer{border-top:var(--line);background:var(--ink-2);padding:clamp(48px,6vw,72px) 0 0;margin-top:var(--section-gap)}
.footer-brand{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;padding-bottom:26px;border-bottom:var(--line)}
.footer-note{font-size:13px;letter-spacing:.06em;color:var(--text-3)}
.footer-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:32px 24px;padding:32px 0}
.footer-col{min-width:0}
.footer-heading{
  font-size:12px;font-weight:400;letter-spacing:.18em;text-transform:uppercase;
  color:var(--slate);padding-bottom:10px;margin-bottom:14px;border-bottom:var(--line);
}
.footer-list{list-style:none;display:grid;gap:10px}
.footer-link{font-size:14px;color:var(--text-2)}
.footer-link:hover{color:var(--brand-bright)}
.footer-contact{font-style:normal;display:grid;gap:10px;font-size:13.5px;color:var(--text-2);line-height:1.7}
.footer-contact__row{display:flex;gap:10px;align-items:baseline;word-break:break-word}
.footer-contact__label{flex:0 0 36px;font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--text-3)}
.footer-bottom{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px;
  border-top:var(--line);padding:18px 0 22px;
  font-size:12px;letter-spacing:.1em;color:var(--text-3);
}
.footer-record,.footer-copy{margin:0}

/* ---------- 底部固定条 ---------- */
.doc-dock{position:fixed;left:0;right:0;bottom:0;z-index:80;height:var(--dock-h);background:rgba(6,23,38,.97);border-top:var(--line);backdrop-filter:blur(8px)}
.doc-dock__inner{max-width:var(--shell);height:100%;margin:0 auto;padding:0 var(--gutter);display:flex;align-items:center;justify-content:space-between;gap:16px}
.doc-dock__hint{margin:0;font-size:12.5px;letter-spacing:.04em;color:var(--text-3);overflow:hidden;white-space:nowrap;text-overflow:ellipsis}
.doc-dock__actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
.doc-dock__panel{
  position:absolute;left:0;right:0;bottom:100%;overflow:hidden;
  max-height:0;background:var(--panel);border-top:var(--line);
  transition:max-height .28s var(--ease);
}
.doc-dock[data-open="true"] .doc-dock__panel{max-height:360px}
.dock-list{
  list-style:none;max-width:var(--shell);margin:0 auto;padding:20px var(--gutter) 22px;
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
}
.dock-item{border:var(--line);padding:14px 16px;background:rgba(126,143,163,.05)}
.dock-item__name{margin:0;font-size:14px;letter-spacing:.06em;color:var(--text)}
.dock-item__meta{margin:6px 0 0;font-size:12px;color:var(--brand-bright)}
.dock-item__scene{margin:8px 0 0;font-size:12px;line-height:1.6;color:var(--text-3)}

/* ---------- 回到顶部 ---------- */
.to-top{
  position:fixed;right:18px;bottom:calc(var(--dock-h) + 16px);z-index:82;
  width:40px;height:40px;display:none;place-items:center;
  background:rgba(13,42,68,.94);border:1px solid var(--hair);color:var(--slate);
  font-family:var(--font-mono);font-size:14px;cursor:pointer;
}
.to-top[data-visible="true"]{display:grid}
.to-top:hover{border-color:var(--brand-bright);color:var(--brand-bright)}

/* ---------- 响应式 ---------- */
@media (max-width:1080px){
  .rail{grid-column:span 12}
  .content-col{grid-column:span 12}
  .rail--sticky{position:static}
}
@media (max-width:900px){
  .nav-toggle{display:inline-flex;margin-right:10px}
  .header-lower .header-lower__inner{position:relative}
  .main-nav{
    display:none;position:absolute;top:100%;left:0;right:0;z-index:95;
    background:var(--ink);border-bottom:var(--line);border-top:var(--line);
    overflow:visible;scroll-snap-type:none;
  }
  .main-nav[data-open="true"]{display:block}
  .main-nav__list{flex-direction:column;align-items:stretch}
  .main-nav__list > li + li{border-left:0;border-top:var(--line)}
  .nav-link{padding:15px 18px}
  .nav-link::after{left:18px;right:18px;height:2px}
  .dock-list{grid-template-columns:repeat(2,minmax(0,1fr))}
  .doc-dock[data-open="true"] .doc-dock__panel{max-height:520px}
}
@media (max-width:760px){
  body{font-size:16px}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px 20px}
  .header-status{display:none}
  .icon-btn__text{display:none}
  .icon-btn{padding:9px 10px}
}
@media (max-width:520px){
  .footer-grid{grid-template-columns:1fr}
  .dock-list{grid-template-columns:1fr}
  .doc-dock__hint{display:none}
  .to-top{right:12px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  .status-dot{animation:none}
  html.js [data-reveal]{opacity:1;transform:none}
}