/* ============================================================
   博胜联盟 · 共享样式 /assets/site.css
   关键色：墨蓝基底 #050F1F / 青碧 #2FD4C6 / 鎏金 #E7B75E
   ============================================================ */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:132px;}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0;padding:0;}
ul,ol{list-style:none;}
img,svg,video{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
main{display:block;}

/* ---------- 2. 变量 ---------- */
:root{
  --c-ink:#050F1F;
  --c-ink-2:#0A1B33;
  --c-card:#12294A;
  --c-teal:#2FD4C6;
  --c-teal-soft:#8AE8E0;
  --c-gold:#E7B75E;
  --c-gold-soft:#F7E2B0;
  --c-text:#A9BCD4;
  --c-title:#F2F7FD;
  --c-glass:rgba(26,54,92,.45);
  --c-glass-deep:rgba(10,27,51,.72);
  --line:rgba(47,212,198,.18);
  --line-soft:rgba(169,188,212,.14);
  --ring:0 0 0 3px rgba(47,212,198,.32);
  --r-s:8px;
  --r-m:12px;
  --r-l:16px;
  --shadow:0 18px 44px rgba(0,0,0,.42);
  --dur:.22s;
  --ease:cubic-bezier(.22,.61,.36,1);
  --container:1240px;
  --gutter:24px;
  --font-sans:system-ui,-apple-system,"Segoe UI",Roboto,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
}

/* ---------- 3. 中文排版与页面基底 ---------- */
body{
  min-height:100vh;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  color:var(--c-text);
  background-color:var(--c-ink);
  background-image:
    radial-gradient(1100px 640px at 84% -12%, rgba(47,212,198,.10), transparent 62%),
    radial-gradient(880px 520px at 4% 2%, rgba(231,183,94,.07), transparent 60%),
    linear-gradient(180deg,#050F1F 0%,#061225 50%,#050F1F 100%);
  background-attachment:fixed;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6{color:var(--c-title);font-weight:700;line-height:1.24;letter-spacing:-.01em;}
.display{font-size:clamp(2rem,4.8vw,3.75rem);line-height:1.06;font-weight:800;letter-spacing:-.02em;color:var(--c-title);}
.h2{font-size:clamp(1.5rem,2.7vw,2.15rem);line-height:1.2;font-weight:700;letter-spacing:-.015em;color:var(--c-title);}
.h3{font-size:1.25rem;line-height:1.35;font-weight:600;color:var(--c-title);}
.lede{font-size:1.05rem;line-height:1.8;color:rgba(169,188,212,.92);max-width:64ch;}
.label{display:inline-block;font-size:.72rem;letter-spacing:.14em;color:var(--c-gold-soft);}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:0;}
.chapter-num{
  display:block;font-family:var(--font-mono);font-variant-numeric:tabular-nums;
  font-size:clamp(2.2rem,5vw,3.6rem);line-height:1;font-weight:800;
  letter-spacing:-.03em;color:var(--c-gold);opacity:.92;
}
a:focus-visible,button:focus-visible,input:focus-visible,[tabindex]:focus-visible{
  outline:2px solid var(--c-teal);outline-offset:3px;border-radius:4px;
}

/* ---------- 4. 跳至主要内容 ---------- */
.skip-link{
  position:absolute;left:16px;top:-120px;z-index:200;
  padding:10px 18px;border-radius:var(--r-s);
  background:var(--c-teal);color:#04202A;font-weight:700;letter-spacing:.04em;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:14px;}

/* ---------- 5. 框架式顶栏 ---------- */
.edge-rail{
  position:fixed;top:0;bottom:0;width:1px;z-index:5;pointer-events:none;
  background:linear-gradient(180deg,rgba(47,212,198,0) 0%,var(--line) 10%,var(--line) 90%,rgba(47,212,198,0) 100%);
}
.edge-rail--left{left:max(10px,calc((100vw - var(--container)) / 2 - 20px));}
.edge-rail--right{right:max(10px,calc((100vw - var(--container)) / 2 - 20px));}

.site-header{
  position:sticky;top:0;z-index:80;padding:10px 0 0;
  background:linear-gradient(180deg,rgba(5,15,31,.99) 0%,rgba(5,15,31,.95) 68%,rgba(5,15,31,.88) 100%);
  border-bottom:1px solid var(--line);
}
.header-inner{width:min(var(--container),calc(100% - 40px));margin-inline:auto;}
.header-frame{
  border:1px solid var(--line);border-bottom:0;
  border-radius:var(--r-l) var(--r-l) 0 0;
  background:var(--c-glass);
  overflow:hidden;
}
.header-bar{
  display:grid;grid-template-columns:auto 1fr auto;align-items:center;
  gap:20px;padding:12px 18px;
  background:linear-gradient(180deg,rgba(18,41,74,.55),rgba(10,27,51,.30));
  backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);
}

/* 品牌 */
.brand{display:flex;align-items:center;gap:12px;padding:4px;border-radius:var(--r-s);}
.brand-glyph{
  position:relative;flex:0 0 auto;width:36px;height:36px;border-radius:10px;
  border:1px solid rgba(47,212,198,.42);
  background:radial-gradient(circle at 30% 28%,rgba(47,212,198,.24),transparent 70%);
}
.brand-glyph i{position:absolute;left:9px;height:2px;border-radius:2px;background:var(--c-teal);transition:width var(--dur) var(--ease);}
.brand-glyph i:nth-child(1){top:10px;width:17px;}
.brand-glyph i:nth-child(2){top:17px;width:12px;background:var(--c-teal-soft);}
.brand-glyph i:nth-child(3){top:24px;width:7px;background:var(--c-gold);}
.brand:hover .brand-glyph i:nth-child(3){width:17px;}
.brand-copy{display:flex;flex-direction:column;line-height:1.25;}
.brand-name{font-size:1rem;font-weight:700;letter-spacing:.06em;color:var(--c-title);}
.brand-sub{font-size:.68rem;letter-spacing:.16em;color:rgba(169,188,212,.72);}

/* 导航 */
.primary-nav{min-width:0;}
.nav-list{display:flex;align-items:center;justify-content:center;gap:4px;}
.nav-link{
  display:block;padding:8px 13px;border-radius:9px;
  border:1px solid transparent;
  font-size:.94rem;font-weight:500;letter-spacing:.02em;color:var(--c-text);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
  white-space:nowrap;
}
.nav-link:hover{color:var(--c-teal-soft);background:rgba(47,212,198,.09);border-color:rgba(47,212,198,.28);}
.nav-link[aria-current="page"]{
  color:var(--c-teal);background:rgba(47,212,198,.12);
  border-color:rgba(47,212,198,.45);
  box-shadow:inset 0 -2px 0 rgba(231,183,94,.85);
}

/* 顶栏工具 */
.header-tools{display:flex;align-items:center;gap:10px;}
.search-trigger{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 15px;border-radius:999px;
  border:1px solid var(--line);background:var(--c-glass-deep);
  color:var(--c-title);font-size:.86rem;letter-spacing:.06em;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.search-trigger:hover{border-color:var(--c-teal);color:var(--c-teal-soft);}
.search-trigger[aria-expanded="true"]{border-color:var(--c-teal);background:rgba(47,212,198,.14);color:var(--c-teal);}
.search-trigger__icon{position:relative;width:11px;height:11px;border:1.6px solid currentColor;border-radius:50%;}
.search-trigger__icon::after{content:"";position:absolute;right:-5px;bottom:-3px;width:7px;height:1.6px;background:currentColor;transform:rotate(45deg);}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 15px;border-radius:999px;
  border:1px solid var(--line);background:var(--c-glass-deep);
  color:var(--c-title);font-size:.86rem;letter-spacing:.08em;
}
.nav-toggle__bar{position:relative;width:15px;height:1.6px;background:var(--c-teal);border-radius:2px;}
.nav-toggle__bar::before,.nav-toggle__bar::after{
  content:"";position:absolute;left:0;width:15px;height:1.6px;background:var(--c-teal);border-radius:2px;
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.nav-toggle__bar::before{top:-5px;}
.nav-toggle__bar::after{top:5px;}
.nav-toggle[aria-expanded="true"]{border-color:var(--c-teal);color:var(--c-teal);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar{background:transparent;}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::before{transform:translateY(5px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar::after{transform:translateY(-5px) rotate(-45deg);}

/* 检索面板 */
.search-panel{
  display:grid;gap:10px;
  padding:0 18px;max-height:0;opacity:0;visibility:hidden;
  transform:translateY(-8px);
  border-top:1px solid transparent;
  background:rgba(5,15,31,.62);
  transition:max-height var(--dur) var(--ease),opacity .2s var(--ease),transform .2s var(--ease),padding var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.search-panel.is-open{
  max-height:360px;opacity:1;visibility:visible;transform:translateY(0);
  padding:16px 18px;border-top-color:var(--line);
}
.search-panel__label{font-size:.7rem;letter-spacing:.16em;color:var(--c-gold);}
.search-panel__input{
  width:100%;padding:12px 15px;border-radius:10px;
  border:1px solid var(--line);background:rgba(5,15,31,.78);
  color:var(--c-title);font-size:1rem;letter-spacing:.02em;
  transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.search-panel__input::placeholder{color:rgba(169,188,212,.55);}
.search-panel__input:focus{outline:none;border-color:var(--c-teal);box-shadow:var(--ring);}
.search-panel__hint{font-size:.78rem;letter-spacing:.06em;color:rgba(169,188,212,.68);}
.search-results{display:grid;gap:6px;max-height:200px;overflow:auto;}
.search-results__item{margin:0;}
.search-results__link{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  padding:10px 13px;border-radius:9px;border:1px solid transparent;
  background:rgba(18,41,74,.62);color:var(--c-title);font-size:.9rem;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.search-results__link:hover{border-color:var(--c-teal);color:var(--c-teal-soft);transform:translateY(-2px);}
.search-results__meta{font-family:var(--font-mono);font-size:.74rem;color:var(--c-gold-soft);}
.search-results__empty{padding:10px 13px;font-size:.84rem;color:rgba(169,188,212,.7);}

/* 状态带 */
.status-strip{
  display:flex;flex-wrap:wrap;align-items:center;gap:6px 22px;
  padding:9px 18px;border-top:1px solid var(--line);
  background:rgba(5,15,31,.68);
  font-size:.7rem;letter-spacing:.14em;color:rgba(169,188,212,.85);
}
.status-chip{display:inline-flex;align-items:center;gap:8px;}
.status-chip__dot{
  width:6px;height:6px;border-radius:50%;background:var(--c-teal);
  box-shadow:0 0 0 3px rgba(47,212,198,.18);
}
.status-chip--gold{color:var(--c-gold-soft);}

/* ---------- 6. 通用布局 ---------- */
.container{width:min(var(--container),calc(100% - 40px));margin-inline:auto;}
.section{padding:64px 0;position:relative;}
.rule{height:1px;border:0;background:linear-gradient(90deg,var(--line),rgba(47,212,198,0));}
.flow > * + *{margin-top:1.2em;}
.grid{display:grid;gap:var(--gutter);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--editorial{grid-template-columns:minmax(0,7fr) minmax(0,4fr);gap:clamp(24px,4vw,56px);}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.55em;
  padding:.74em 1.45em;border-radius:999px;border:1px solid transparent;
  font-size:.95rem;font-weight:600;letter-spacing:.04em;
  color:var(--c-title);background:var(--c-card);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.btn:hover{transform:translateY(-2px);border-color:var(--c-teal);}
.btn--primary{
  background:linear-gradient(135deg,#2FD4C6,#1B9D96);color:#04202A;
  border-color:rgba(47,212,198,.55);
}
.btn--primary:hover{color:#04202A;border-color:var(--c-teal-soft);}
.btn--gold{background:transparent;border-color:rgba(231,183,94,.55);color:var(--c-gold-soft);}
.btn--gold:hover{border-color:var(--c-gold);color:var(--c-gold);}
.btn--ghost{background:var(--c-glass);border-color:var(--line);color:var(--c-title);}
.btn--ghost:hover{color:var(--c-teal-soft);}

/* ---------- 8. 面包屑与正文 ---------- */
.crumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:.74rem;letter-spacing:.14em;color:rgba(169,188,212,.7);
}
.crumbs__item{color:inherit;transition:color var(--dur) var(--ease);}
.crumbs__item:hover{color:var(--c-teal-soft);}
.crumbs__item--current{color:var(--c-teal);}
.crumbs__sep{color:rgba(169,188,212,.35);}

.prose{max-width:70ch;font-size:1rem;line-height:1.85;color:var(--c-text);}
.prose > * + *{margin-top:1.2em;}
.prose h2{font-size:1.6rem;color:var(--c-title);margin-top:2em;}
.prose h3{font-size:1.15rem;color:var(--c-title);margin-top:1.7em;}
.prose strong{color:var(--c-title);}
.prose a{color:var(--c-teal-soft);border-bottom:1px solid rgba(138,232,224,.42);}
.prose a:hover{color:var(--c-teal);border-bottom-color:var(--c-teal);}
.prose ul,.prose ol{padding-left:1.35em;}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose li + li{margin-top:.5em;}

/* ---------- 9. 图片容器基础规则 ---------- */
.media-frame{
  position:relative;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);border-radius:14px;
  background:linear-gradient(140deg,rgba(18,41,74,.92),rgba(5,15,31,.92));
  aspect-ratio:16 / 9;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame img{width:100%;height:100%;object-fit:cover;}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(242,247,253,.055) 1px,transparent 1px);
  background-size:3px 3px;opacity:.6;mix-blend-mode:screen;
}
.media-frame__caption{
  position:absolute;left:12px;bottom:12px;z-index:2;
  padding:6px 12px;border-radius:999px;
  background:rgba(5,15,31,.72);border:1px solid var(--line);
  font-size:.7rem;letter-spacing:.14em;color:var(--c-gold-soft);
}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  position:relative;margin-top:80px;border-top:1px solid var(--line);
  background:linear-gradient(180deg,rgba(10,27,51,.55) 0%,rgba(5,15,31,1) 72%);
}
.site-footer::before{
  content:"";position:absolute;top:-1px;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(47,212,198,.55),transparent);
}
.footer-inner{width:min(var(--container),calc(100% - 40px));margin-inline:auto;padding:56px 0 28px;}
.footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1.5fr;gap:32px;}

.footer-brand__name{font-size:1.15rem;font-weight:700;letter-spacing:.08em;color:var(--c-title);}
.footer-brand__line{margin-top:8px;font-size:.74rem;letter-spacing:.16em;color:var(--c-gold-soft);}
.footer-brand__note{margin-top:16px;max-width:34ch;font-size:.86rem;line-height:1.75;color:rgba(169,188,212,.72);}

.footer-col__title{margin-bottom:14px;font-size:.7rem;letter-spacing:.18em;color:var(--c-teal);}
.footer-list{display:grid;gap:10px;}
.footer-link{
  font-size:.92rem;color:var(--c-text);
  border-bottom:1px solid transparent;
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-link:hover{color:var(--c-teal-soft);border-bottom-color:rgba(47,212,198,.55);}

.footer-contact__list{display:grid;gap:12px;}
.footer-contact__key{display:block;font-size:.68rem;letter-spacing:.16em;color:rgba(169,188,212,.58);}
.footer-contact__val{display:block;font-size:.88rem;color:var(--c-title);word-break:break-word;}
.footer-contact__val--mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.01em;}
.footer-contact__note{margin-top:14px;font-size:.78rem;line-height:1.7;color:rgba(169,188,212,.68);}

.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 24px;
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line-soft);
  font-size:.76rem;letter-spacing:.08em;color:rgba(169,188,212,.72);
}
.footer-legal{font-family:var(--font-mono);letter-spacing:.06em;}
.footer-closing{color:var(--c-gold-soft);}
.footer-year{font-family:var(--font-mono);color:var(--c-gold);}

/* ---------- 11. JS 生成元素 ---------- */
.scroll-progress{
  position:fixed;top:0;left:0;right:0;height:2px;z-index:120;
  pointer-events:none;background:rgba(47,212,198,.12);
}
.scroll-progress__bar{
  display:block;height:100%;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--c-teal),var(--c-gold));
}
.to-top{
  position:fixed;right:20px;bottom:24px;z-index:110;
  padding:10px 16px;border-radius:999px;
  border:1px solid var(--line);background:var(--c-glass-deep);
  color:var(--c-title);font-size:.78rem;letter-spacing:.12em;
  opacity:0;visibility:hidden;transform:translateY(10px);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
  transition:opacity var(--dur) var(--ease),transform var(--dur) var(--ease),visibility var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{border-color:var(--c-teal);color:var(--c-teal-soft);}

/* 章节跟随（页面阶段使用 data-chapter-link） */
[data-chapter-link]{transition:color var(--dur) var(--ease);}
[data-chapter-link].is-current{
  color:var(--c-gold-soft);
  box-shadow:inset 2px 0 0 var(--c-gold);
}

/* ---------- 12. 响应式 ---------- */
@media (max-width:1100px){
  .footer-grid{grid-template-columns:1.6fr 1fr 1fr 1.4fr;}
  .footer-brand{grid-column:1 / -1;}
}
@media (max-width:960px){
  html{scroll-padding-top:120px;}
  .header-bar{grid-template-columns:1fr auto;gap:14px;padding:12px 14px;}
  .header-tools{justify-self:end;}
  .nav-toggle{display:inline-flex;}
  .primary-nav{
    grid-column:1 / -1;grid-row:2;
    max-height:0;overflow:hidden;opacity:0;visibility:hidden;
    transition:max-height var(--dur) var(--ease),opacity var(--dur) var(--ease),visibility var(--dur) var(--ease),padding var(--dur) var(--ease);
  }
  .primary-nav[data-open]{
    max-height:520px;opacity:1;visibility:visible;padding:4px 0 12px;
  }
  .nav-list{flex-direction:column;align-items:stretch;gap:6px;}
  .nav-link{
    padding:13px 15px;border-radius:10px;
    background:rgba(5,15,31,.48);border:1px solid var(--line-soft);
  }
  .nav-link[aria-current="page"]{box-shadow:inset 3px 0 0 rgba(231,183,94,.9);}
  .status-strip{padding:9px 14px;gap:6px 14px;}
  .grid--editorial{grid-template-columns:minmax(0,1fr);}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:720px){
  .section{padding:48px 0;}
  .grid,.grid--2,.grid--3{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
  .footer-inner{padding:44px 0 24px;}
  .footer-base{justify-content:flex-start;}
  .to-top{right:14px;bottom:16px;}
  .media-frame--wide{aspect-ratio:16 / 9;}
}
@media (max-width:480px){
  .container,.header-inner,.footer-inner{width:calc(100% - 28px);}
  .brand-sub{display:none;}
  .search-trigger__label{display:none;}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
}

/* ---------- 13. 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;
  }
  .btn:hover,.search-results__link:hover{transform:none;}
}