/* 博赢主站 · 共享样式 /assets/site.css */

*,*::before,*::after{box-sizing:border-box;}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:calc(var(--header-h) + 18px);
  background:#0A1020;
}

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%;}
img{height:auto;}
button,input,select,textarea{font:inherit;color:inherit;}
button{background:none;border:0;cursor:pointer;}
a{color:inherit;text-decoration:none;}
table{border-collapse:collapse;width:100%;}

:root{
  --ink:#0A1020;
  --ink-2:#111A2E;
  --slate:#1C2942;
  --jade:#2F8A74;
  --gold:#C9A227;
  --gold-lt:#E4C45C;
  --cinnabar:#C34132;
  --paper:#E9E5DA;
  --muted:#8E9AB0;
  --hair:#6E5A1E;

  --ink-soft:rgba(233,229,218,.74);
  --jade-soft:rgba(47,138,116,.45);
  --gold-soft:rgba(201,162,39,.55);
  --paper-ink:#141C2E;

  --font-sans:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --header-h:72px;
  --radius:3px;
  --edge:1px solid rgba(110,90,30,.45);
  --shadow-lift:0 18px 42px -26px rgba(0,0,0,.95);
}

body{
  min-height:100vh;
  background-color:var(--ink);
  background-image:
    radial-gradient(120% 80% at 86% -10%,rgba(47,138,116,.16),transparent 62%),
    radial-gradient(90% 60% at 0% 0%,rgba(201,162,39,.10),transparent 58%),
    linear-gradient(rgba(110,90,30,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(110,90,30,.07) 1px,transparent 1px);
  background-size:auto,auto,88px 88px,88px 88px;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.9;
  letter-spacing:.01em;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}

body.is-nav-open{overflow:hidden;}

::selection{background:rgba(201,162,39,.35);color:#fff;}

:focus-visible{outline:2px solid var(--gold-lt);outline-offset:3px;}

.visually-hidden{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}

/* ---------- 跳转链接 ---------- */
.skip-link{
  position:fixed;left:16px;top:-72px;z-index:99;
  padding:10px 18px;border-radius:2px;
  background:linear-gradient(150deg,var(--gold-lt),var(--gold));
  color:var(--paper-ink);font-weight:700;font-size:.86rem;letter-spacing:.1em;
  transition:top .24s ease;
}
.skip-link:focus{top:14px;}

/* ---------- 页头 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  color:var(--paper);
  border-bottom:1px solid transparent;
  transition:background-color .35s ease,border-color .35s ease,box-shadow .35s ease;
}
.site-header.is-scrolled{
  background:rgba(10,16,32,.95);
  border-bottom-color:rgba(110,90,30,.55);
  box-shadow:0 16px 38px -30px #000;
  backdrop-filter:blur(10px);
}
.site-header[data-open="true"]{
  background:rgba(10,16,32,.98);
  border-bottom-color:rgba(110,90,30,.55);
}

.read-progress{
  position:absolute;left:0;right:0;bottom:-1px;height:2px;
  background:rgba(110,90,30,.28);overflow:hidden;
}
.read-progress__bar{
  display:block;width:100%;height:100%;
  transform:scaleX(0);transform-origin:left center;
  background:linear-gradient(90deg,var(--gold),var(--gold-lt) 70%,var(--jade));
}

.header-inner{
  position:relative;z-index:2;
  width:min(1320px,100% - 40px);
  margin-inline:auto;
  min-height:var(--header-h);
  display:flex;align-items:center;gap:clamp(14px,2.4vw,36px);
}

.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto;}
.brand__mark{
  display:grid;place-items:center;
  width:38px;height:38px;border-radius:2px;
  background:linear-gradient(150deg,var(--gold-lt),var(--gold));
  border:1px solid rgba(110,90,30,.9);
  box-shadow:0 0 0 1px rgba(10,16,32,.7) inset;
  color:var(--paper-ink);
  font-family:var(--font-mono);font-size:.78rem;font-weight:700;letter-spacing:.06em;
}
.brand__text{display:flex;flex-direction:column;line-height:1.15;}
.brand__name{font-size:1.05rem;font-weight:800;letter-spacing:.08em;color:var(--paper);}
.brand__tag{
  font-family:var(--font-mono);font-size:.62rem;letter-spacing:.2em;
  color:var(--muted);text-transform:uppercase;
}

.nav{flex:1 1 auto;display:flex;align-items:center;justify-content:center;}
.nav__list{display:flex;align-items:center;gap:clamp(8px,1.6vw,26px);}
.nav__item{display:block;}
.nav__link{
  position:relative;display:inline-block;padding:9px 2px;
  font-size:.9rem;letter-spacing:.08em;color:var(--ink-soft);
  transition:color .25s ease;
}
.nav__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:3px;height:1px;
  background:var(--gold);transition:right .3s ease;
}
.nav__link:hover{color:var(--paper);}
.nav__link:hover::after{right:0;}
.nav__link[aria-current="page"]{color:var(--gold-lt);}
.nav__link[aria-current="page"]::after{right:0;background:var(--gold-lt);}

.nav__foot{display:none;}
.nav__note{
  font-family:var(--font-mono);font-size:.68rem;letter-spacing:.08em;
  color:var(--muted);line-height:1.8;
}
.nav__cta{align-self:flex-start;}

.header-tools{
  display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto;
}
.header-mail{
  display:inline-flex;align-items:center;gap:9px;
  padding:9px 14px;border:1px solid rgba(110,90,30,.6);border-radius:2px;
  transition:border-color .25s ease,background-color .25s ease;
}
.header-mail:hover{border-color:var(--gold);background:rgba(201,162,39,.08);}
.header-mail__label{
  font-size:.78rem;letter-spacing:.14em;color:var(--ink-soft);
}
.header-mail__value{
  font-family:var(--font-mono);font-size:.72rem;letter-spacing:.04em;color:var(--gold-lt);
}

.nav-toggle{
  display:none;align-items:center;gap:10px;
  padding:10px 12px;border:1px solid rgba(110,90,30,.6);border-radius:2px;
  color:var(--paper);font-size:.76rem;letter-spacing:.16em;
}
.nav-toggle:hover{border-color:var(--gold);}
.nav-toggle__label{white-space:nowrap;}
.nav-toggle__bars{display:grid;gap:4px;width:18px;}
.nav-toggle__bars i{
  display:block;height:1px;background:currentColor;
  transition:transform .3s ease,opacity .2s ease;
}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(1){transform:translateY(5px) rotate(45deg);}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(2){opacity:0;}
.site-header[data-open="true"] .nav-toggle__bars i:nth-child(3){transform:translateY(-5px) rotate(-45deg);}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(64px,9vw,132px);
  background:linear-gradient(180deg,var(--ink) 0%,var(--ink-2) 100%);
  border-top:1px solid rgba(110,90,30,.5);
  color:var(--ink-soft);
}
.footer-inner{
  width:min(1320px,100% - 40px);
  margin-inline:auto;
  padding:clamp(44px,6vw,80px) 0 30px;
}
.footer-rule{
  height:1px;margin-bottom:clamp(30px,4vw,52px);
  background:linear-gradient(90deg,var(--gold),rgba(201,162,39,.06));
}
.footer-brand{
  display:flex;align-items:flex-start;gap:16px;
  max-width:64ch;margin-bottom:clamp(34px,5vw,62px);
}
.footer-brand__mark{
  flex:0 0 auto;display:grid;place-items:center;
  width:46px;height:46px;border-radius:2px;
  border:1px solid rgba(110,90,30,.9);
  background:rgba(201,162,39,.1);
  color:var(--gold-lt);
  font-family:var(--font-mono);font-size:.84rem;font-weight:700;letter-spacing:.06em;
}
.footer-brand__text{display:block;}
.footer-brand__name{
  font-size:1.05rem;font-weight:800;letter-spacing:.06em;color:var(--paper);
}
.footer-brand__desc{
  margin-top:6px;font-size:.92rem;line-height:1.9;color:var(--muted);
}
.footer-grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(24px,3vw,48px);
}
.footer-col{min-width:0;}
.footer-col__title{
  font-family:var(--font-mono);font-size:.7rem;font-weight:500;
  letter-spacing:.24em;text-transform:uppercase;color:var(--gold);
  margin-bottom:16px;
}
.footer-links{display:grid;gap:10px;}
.footer-link{
  display:inline-block;font-size:.92rem;color:var(--ink-soft);
  transition:color .25s ease,transform .25s ease;
}
.footer-link:hover{color:var(--gold-lt);transform:translateX(5px);}

.contact-list{display:grid;gap:14px;}
.contact-line{
  display:grid;grid-template-columns:auto minmax(0,1fr);
  gap:10px;align-items:baseline;font-size:.9rem;
}
.contact-label{
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.16em;
  padding:2px 6px;border:1px solid var(--jade-soft);border-radius:2px;
  color:#8FD8C6;white-space:nowrap;
}
.contact-value{color:var(--paper);line-height:1.75;word-break:break-word;}
.footer-note{
  margin-top:18px;
  font-family:var(--font-mono);font-size:.68rem;line-height:1.85;
  letter-spacing:.04em;color:var(--muted);
}
.footer-bottom{
  margin-top:clamp(34px,5vw,58px);padding-top:22px;
  border-top:1px solid var(--slate);
  display:flex;flex-wrap:wrap;gap:10px 26px;
  align-items:center;justify-content:space-between;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:var(--muted);
}
.footer-legal,.footer-icp{line-height:1.7;}

/* ---------- 版心与排版 ---------- */
.container{width:min(1240px,100% - 40px);margin-inline:auto;}
.container--narrow{width:min(920px,100% - 40px);margin-inline:auto;}

.prose{max-width:68ch;color:var(--ink-soft);line-height:1.95;}
.prose p + p{margin-top:1.15em;}
.prose h2,.prose h3{color:var(--paper);line-height:1.35;letter-spacing:.01em;}
.prose h2{margin-top:2.2em;font-size:1.5rem;font-weight:900;}
.prose h3{margin-top:1.8em;font-size:1.14rem;font-weight:800;}
.prose ul,.prose ol{margin-top:1em;padding-left:1.2em;list-style:disc;}
.prose ol{list-style:decimal;}
.prose li{margin-top:.4em;}

.rule{height:1px;border:0;background:var(--slate);}

/* ---------- 章节 ---------- */
.section{
  position:relative;
  padding-block:clamp(56px,8vw,110px);
}
.section--alt{background:var(--ink-2);}
.section__head{
  display:flex;align-items:flex-end;flex-wrap:wrap;
  gap:clamp(14px,3vw,38px);
  padding-bottom:20px;margin-bottom:clamp(26px,4vw,46px);
  border-bottom:1px solid var(--slate);
}
.section__kicker{
  display:block;width:100%;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.26em;
  text-transform:uppercase;color:var(--jade);margin-bottom:12px;
}
.section__num{
  font-family:var(--font-mono);font-weight:700;line-height:.8;
  font-size:clamp(2.4rem,6vw,6rem);letter-spacing:-.02em;
  color:rgba(201,162,39,.26);
  -webkit-text-stroke:1px var(--gold-soft);
}
.section__title{
  font-size:clamp(1.45rem,3.2vw,2.35rem);font-weight:900;
  line-height:1.28;letter-spacing:-.01em;color:var(--paper);
  margin-left:auto;
}

/* ---------- 网格 ---------- */
.grid{display:grid;gap:clamp(16px,2.4vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--mosaic{grid-template-columns:repeat(6,minmax(0,1fr));}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  padding:clamp(20px,2.4vw,30px);
  background:var(--ink-2);
  border:1px solid var(--slate);
  border-radius:var(--radius);
  transition:transform .3s ease,border-color .3s ease,box-shadow .3s ease;
}
.card:hover{transform:translateY(-4px);border-color:var(--gold-soft);box-shadow:var(--shadow-lift);}
.card__meta{
  display:block;
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);
}
.card__title{
  margin:8px 0 10px;font-size:1.1rem;font-weight:800;line-height:1.42;color:var(--paper);
}
.card__body{font-size:.92rem;line-height:1.9;color:var(--ink-soft);}
.card--jade{
  border-color:var(--jade-soft);
  background:linear-gradient(180deg,rgba(47,138,116,.14),var(--ink-2));
}
.card--paper{
  background:var(--paper);border-color:rgba(20,28,46,.16);color:var(--paper-ink);
}
.card--paper .card__title{color:var(--paper-ink);}
.card--paper .card__body{color:rgba(20,28,46,.78);}
.card--paper .card__meta{color:rgba(20,28,46,.55);}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border:1px solid rgba(110,90,30,.6);border-radius:2px;
  background:rgba(201,162,39,.08);color:var(--gold-lt);
  font-family:var(--font-mono);font-size:.66rem;letter-spacing:.12em;
}
.tag--jade{color:#8FD8C6;border-color:var(--jade-soft);background:rgba(47,138,116,.14);}
.tag--cinnabar{color:#EDA093;border-color:rgba(195,65,50,.6);background:rgba(195,65,50,.14);}

/* ---------- 数据条目 ---------- */
.stat{
  display:flex;flex-direction:column;gap:3px;
  padding:16px 0;border-top:1px solid var(--slate);
}
.stat__value{
  font-family:var(--font-mono);font-weight:700;letter-spacing:-.02em;
  font-size:clamp(1.5rem,3vw,2.3rem);color:var(--gold-lt);line-height:1.2;
}
.stat__label{font-size:.78rem;letter-spacing:.08em;color:var(--muted);}
.stat__delta{font-family:var(--font-mono);font-size:.7rem;letter-spacing:.08em;color:#8FD8C6;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 22px;border:1px solid transparent;border-radius:2px;
  font-size:.86rem;font-weight:700;letter-spacing:.12em;
  transition:background-color .25s ease,color .25s ease,border-color .25s ease,transform .25s ease;
}
.btn--gold{
  background:linear-gradient(150deg,var(--gold-lt),var(--gold));
  color:var(--paper-ink);border-color:rgba(110,90,30,.9);
}
.btn--gold:hover{transform:translateY(-2px);}
.btn--ghost{
  background:transparent;color:var(--gold-lt);border-color:var(--gold-soft);
}
.btn--ghost:hover{background:rgba(201,162,39,.1);}
.btn--sm{padding:8px 14px;font-size:.76rem;}

/* ---------- 面包屑 ---------- */
.breadcrumbs{margin-bottom:clamp(18px,3vw,32px);}
.breadcrumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.7rem;letter-spacing:.1em;color:var(--muted);
}
.breadcrumbs__item{display:flex;align-items:center;gap:8px;}
.breadcrumbs__link{color:var(--muted);transition:color .25s ease;}
.breadcrumbs__link:hover{color:var(--gold-lt);}
.breadcrumbs__item[aria-current="page"]{color:var(--paper);}
.breadcrumbs__sep{color:var(--gold-soft);}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16 / 9;
  border:1px solid var(--slate);border-radius:var(--radius);
  background:linear-gradient(160deg,var(--slate),var(--ink-2));
}
.media-frame img{
  width:100%;height:100%;object-fit:cover;
  filter:saturate(.72) contrast(1.05) brightness(.94);
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--placeholder::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(135deg,rgba(110,90,30,.16) 0 2px,transparent 2px 12px);
}
.media-frame__cap{
  position:absolute;left:0;bottom:0;
  padding:8px 12px;
  font-family:var(--font-mono);font-size:.64rem;letter-spacing:.14em;
  color:var(--gold-lt);
  background:rgba(10,16,32,.84);
  border-top:1px solid rgba(110,90,30,.5);
}

/* ---------- 锚点导航 ---------- */
.toc{border-left:1px solid rgba(110,90,30,.5);padding-left:18px;}
.toc__list{display:grid;gap:10px;}
.toc__link{
  display:block;
  font-family:var(--font-mono);font-size:.78rem;letter-spacing:.06em;
  color:var(--muted);line-height:1.7;
  transition:color .25s ease,transform .25s ease;
}
.toc__link:hover{color:var(--gold-lt);}
.toc__link[aria-current="true"]{color:var(--gold-lt);transform:translateX(4px);}

/* ---------- 显现动效 ---------- */
.has-js [data-reveal]{
  opacity:0;transform:translateY(18px);
  transition:opacity .6s ease,transform .6s ease;
}
.has-js [data-reveal].is-visible{opacity:1;transform:none;}

/* ---------- 响应式 ---------- */
@media (max-width:1240px){
  .header-mail__value{display:none;}
}

@media (max-width:1080px){
  .header-inner{width:min(1320px,100% - 32px);}
  .nav-toggle{display:inline-flex;}
  .nav{
    position:fixed;inset:0;z-index:1;
    display:flex;flex-direction:column;align-items:stretch;justify-content:flex-start;
    gap:0;padding:calc(var(--header-h) + 22px) 24px 52px;
    overflow-y:auto;
    background:
      radial-gradient(120% 60% at 100% 0%,rgba(47,138,116,.2),transparent 62%),
      var(--ink);
    border-left:1px solid rgba(110,90,30,.35);
    opacity:0;visibility:hidden;transform:translateX(6%);
    transition:opacity .3s ease,transform .34s ease,visibility .34s ease;
  }
  .site-header[data-open="true"] .nav{opacity:1;visibility:visible;transform:none;}
  .nav__list{flex-direction:column;align-items:stretch;gap:0;width:100%;}
  .nav__item{border-bottom:1px solid var(--slate);}
  .nav__link{
    display:flex;align-items:center;justify-content:space-between;
    padding:18px 6px;font-size:1.04rem;color:var(--paper);letter-spacing:.06em;
  }
  .nav__link::after{display:none;}
  .nav__link[aria-current="page"]{
    color:var(--gold-lt);
    box-shadow:inset 3px 0 0 var(--gold);
    padding-left:14px;
  }
  .nav__foot{display:flex;flex-direction:column;gap:14px;margin-top:30px;}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
}

@media (max-width:860px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--mosaic{grid-template-columns:repeat(4,minmax(0,1fr));}
  .section__title{margin-left:0;width:100%;}
}

@media (max-width:720px){
  :root{--header-h:64px;}
  .container,.container--narrow,.header-inner,.footer-inner{width:calc(100% - 32px);}
  .brand__tag{display:none;}
  .grid--2,.grid--3,.grid--mosaic{grid-template-columns:minmax(0,1fr);}
  .footer-grid{grid-template-columns:minmax(0,1fr);}
  .footer-bottom{justify-content:flex-start;}
  .breadcrumbs__list{font-size:.66rem;}
  .media-frame--wide{aspect-ratio:16 / 9;}
}

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