/* ==========================================================
   万博MAX · 共享样式表 /assets/site.css
   夜航仪表盘：深墨蓝底 + 蓝图网格 + 电光紫 / 鎏金 / 青绿
   ========================================================== */

:root{
  --bg:#070B18;
  --panel:#0E1526;
  --violet-bg:#1A1033;
  --violet:#7C4DFF;
  --violet-deep:#5B2BD9;
  --violet-soft:#B39DFF;
  --gold:#E6B84C;
  --gold-soft:#F3D98B;
  --mint:#35D0BA;
  --text:#F7F9FC;
  --muted:#9AA6BF;
  --line:#24304A;
  --radius-sm:12px;
  --radius-md:18px;
  --radius-lg:28px;
  --pill:999px;
  --shadow:0 18px 44px rgba(3,6,16,.55);
  --font-display:"Barlow Condensed","Oswald","Noto Sans SC","PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --dur:200ms;
  --ease:cubic-bezier(.22,.61,.36,1);
  --wrap:1200px;
}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,p,ul,ol,li,figure,blockquote{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,picture{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4{font-family:var(--font-display);font-weight:700;line-height:1.2;letter-spacing:.02em}

body{
  background-color:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  font-size:1rem;
  line-height:1.75;
  min-height:100vh;
  overflow-x:hidden;
}

/* 蓝图网格与霓虹光晕铺底 */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    repeating-linear-gradient(to right, rgba(36,48,74,.55) 0 1px, transparent 1px 76px),
    repeating-linear-gradient(to bottom, rgba(36,48,74,.42) 0 1px, transparent 1px 76px),
    radial-gradient(circle at 10% -12%, rgba(124,77,255,.22), transparent 55%),
    radial-gradient(circle at 94% 6%, rgba(230,184,76,.10), transparent 46%);
}
main{position:relative;z-index:1}

:focus-visible{outline:2px solid var(--violet-soft);outline-offset:2px;border-radius:6px}

/* ---------- 通用工具 ---------- */
.wrap{width:min(100% - 2rem, var(--wrap));margin-inline:auto}
@media (min-width:760px){.wrap{width:min(100% - 3rem, var(--wrap))}}

.mono{font-family:var(--font-mono);font-size:.8125rem;letter-spacing:.06em}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.22em;
  text-transform:uppercase;color:var(--mint);
}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--mint),transparent)}
.divider{height:1px;border:0;background:linear-gradient(90deg,var(--line),rgba(124,77,255,.45),transparent)}

.section{padding:56px 0}
.section__head{display:grid;gap:10px;margin-bottom:26px}
.section__index{
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.24em;
  color:var(--gold);text-transform:uppercase;
}
.section__title{font-size:clamp(1.75rem,4vw,3rem);text-transform:uppercase;letter-spacing:.04em}
.section__note{margin:0;max-width:62ch;color:var(--muted);font-size:.9375rem}

.grid{display:grid;gap:20px}
.grid--2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}
@media (min-width:900px){
  .grid--aside{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
}

/* ---------- 按钮 / 胶囊 / 标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:.8125rem;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.btn--primary{background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:#fff;box-shadow:0 10px 26px rgba(91,43,217,.38)}
.btn--primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px rgba(124,77,255,.5)}
.btn--gold{background:linear-gradient(135deg,var(--gold),#C9973A);color:#140D02;font-weight:700}
.btn--gold:hover{transform:translateY(-2px);box-shadow:0 12px 28px rgba(230,184,76,.32)}
.btn--ghost{border-color:rgba(124,77,255,.5);color:var(--violet-soft);background:rgba(124,77,255,.08)}
.btn--ghost:hover{background:rgba(124,77,255,.2);color:#fff}
.btn--sm{padding:8px 16px;font-size:.6875rem}

.pill{
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  padding:8px 14px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.06em;
  border:1px solid transparent;
  transition:transform var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease),color var(--dur) var(--ease);
}
.pill--gold{background:linear-gradient(135deg,var(--gold),#C9973A);color:#140D02;font-weight:700;border-color:rgba(243,217,139,.55)}
.pill--gold:hover{transform:translateY(-1px);box-shadow:0 0 0 3px rgba(230,184,76,.2)}
.pill--ghost{border-color:rgba(124,77,255,.5);color:var(--violet-soft);background:rgba(124,77,255,.1)}
.pill--ghost:hover{background:rgba(124,77,255,.24);color:#fff}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--line);color:var(--muted);background:rgba(14,21,38,.7);
}
.tag--violet{border-color:rgba(124,77,255,.55);color:var(--violet-soft);background:rgba(124,77,255,.12)}
.tag--gold{border-color:rgba(230,184,76,.5);color:var(--gold-soft);background:rgba(230,184,76,.1)}
.tag--mint{border-color:rgba(53,208,186,.45);color:var(--mint);background:rgba(53,208,186,.1)}

/* ---------- 头部命令栏 ---------- */
.skip-link{
  position:absolute;left:16px;top:-72px;z-index:200;
  padding:10px 20px;border-radius:var(--pill);
  background:var(--gold);color:#140D02;font-weight:700;font-size:.875rem;
  transition:top var(--dur) var(--ease);
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,11,24,.9);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.site-header[data-scrolled]{
  background:rgba(7,11,24,.97);
  border-bottom-color:rgba(124,77,255,.42);
  box-shadow:0 14px 36px rgba(2,4,12,.6);
}
.scroll-progress{
  position:absolute;left:0;bottom:-1px;height:2px;width:100%;
  transform:scaleX(0);transform-origin:0 50%;
  background:linear-gradient(90deg,var(--violet),var(--gold) 55%,var(--mint));
  pointer-events:none;
}
.header-inner{
  width:min(100% - 2rem, var(--wrap));
  margin-inline:auto;
  display:flex;align-items:center;gap:14px;
  padding-block:10px;
}
@media (min-width:760px){.header-inner{width:min(100% - 3rem, var(--wrap));gap:20px}}

.brand-lock{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand-mark{display:inline-flex;align-items:center;gap:10px}
.brand-mark__glyph{
  font-family:var(--font-display);font-weight:700;font-size:1rem;letter-spacing:.16em;
  padding:7px 12px;border-radius:var(--pill);
  background:linear-gradient(135deg,var(--violet),var(--violet-deep));
  color:#fff;box-shadow:0 8px 20px rgba(91,43,217,.45);
}
.brand-mark__text{
  font-family:var(--font-display);font-size:1.0625rem;letter-spacing:.14em;white-space:nowrap;
}
.header-index{
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;
  color:var(--muted);padding-left:12px;border-left:1px solid var(--line);
}
.header-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}

.cmd-nav{flex:1 1 auto;min-width:0;overflow-x:auto;scrollbar-width:none}
.cmd-nav::-webkit-scrollbar{display:none}
.cmd-nav__list{display:flex;align-items:center;gap:4px}
.cmd-nav__item{flex:0 0 auto}
.cmd-nav__link{
  display:inline-flex;align-items:center;gap:8px;white-space:nowrap;
  padding:8px 14px;border-radius:var(--pill);
  border:1px solid transparent;color:var(--muted);font-size:.875rem;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.cmd-nav__no{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.1em;color:rgba(154,166,191,.7)}
.cmd-nav__link:hover{color:var(--text);background:rgba(124,77,255,.14);border-color:rgba(124,77,255,.34)}
.cmd-nav__link:hover .cmd-nav__no{color:var(--gold)}
.cmd-nav__link[aria-current="page"]{
  color:#fff;
  background:linear-gradient(135deg,rgba(124,77,255,.42),rgba(91,43,217,.24));
  border-color:var(--violet);
  box-shadow:inset 0 0 0 1px rgba(179,157,255,.25);
}
.cmd-nav__link[aria-current="page"] .cmd-nav__no{color:var(--gold)}

.nav-toggle{
  display:none;flex:0 0 auto;
  width:44px;height:44px;border-radius:14px;
  border:1px solid var(--line);background:rgba(124,77,255,.14);
  flex-direction:column;align-items:center;justify-content:center;gap:5px;
}
.nav-toggle__bar{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--text);
  transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease);
}
.site-header[data-open] .nav-toggle__bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.site-header[data-open] .nav-toggle__bar:nth-child(2){opacity:0}
.site-header[data-open] .nav-toggle__bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

@media (max-width:960px){
  .header-index{display:none}
  .nav-toggle{display:inline-flex}
  .cmd-nav{
    position:absolute;left:0;right:0;top:100%;display:none;
    max-height:min(74vh,540px);overflow-y:auto;
    padding:14px 16px 20px;
    background:linear-gradient(180deg,var(--panel),#080D1C);
    border-bottom:1px solid var(--line);
    box-shadow:0 26px 52px rgba(2,4,12,.6);
    z-index:70;
  }
  .site-header[data-open] .cmd-nav{display:block;animation:drawer-in 200ms var(--ease)}
  .cmd-nav__list{flex-direction:column;align-items:stretch;gap:4px}
  .cmd-nav__link{width:100%;justify-content:flex-start;font-size:.9375rem;padding:12px 14px;border-color:var(--line);background:rgba(14,21,38,.6)}
}
@keyframes drawer-in{from{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:none}}

@media (max-width:560px){
  .brand-mark__text{display:none}
  .pill{padding:7px 10px;font-size:.6875rem;letter-spacing:.02em}
  .header-actions{gap:6px}
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;margin-top:72px;
  background:
    radial-gradient(120% 80% at 100% 0%, rgba(124,77,255,.16), transparent 62%),
    linear-gradient(180deg,var(--panel) 0%,#080D1C 100%);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:2px;
  background:linear-gradient(90deg,transparent,var(--violet) 25%,var(--gold) 62%,var(--mint));
  opacity:.85;
}
.footer-inner{
  width:min(100% - 2rem, var(--wrap));
  margin-inline:auto;
  padding:48px 0 28px;
  display:grid;gap:34px;
}
@media (min-width:760px){.footer-inner{width:min(100% - 3rem, var(--wrap))}}
@media (min-width:980px){
  .footer-inner{grid-template-columns:minmax(0,.85fr) minmax(0,2.15fr);gap:48px;padding:64px 0 32px}
}

.footer-brand__mark{display:inline-flex;align-items:center;gap:10px}
.footer-brand__glyph{
  font-family:var(--font-display);font-weight:700;font-size:1rem;letter-spacing:.16em;
  padding:7px 12px;border-radius:var(--pill);
  background:linear-gradient(135deg,var(--violet),var(--violet-deep));color:#fff;
}
.footer-brand__name{font-family:var(--font-display);font-size:1.125rem;letter-spacing:.16em}
.footer-brand__note{margin-top:14px;max-width:34ch;color:var(--muted);font-size:.875rem}
.footer-brand__chip{
  display:inline-block;margin-top:16px;padding:5px 12px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--mint);border:1px solid rgba(53,208,186,.35);
}

.footer-groups{display:grid;gap:28px}
@media (min-width:640px){.footer-groups{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (min-width:980px){.footer-groups{grid-template-columns:repeat(3,minmax(0,1fr))}}
.footer-group__title{
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.2em;text-transform:uppercase;
  color:var(--gold);padding-bottom:10px;border-bottom:1px solid var(--line);
}
.footer-links{margin-top:14px;display:grid;gap:2px}
.footer-link{
  display:flex;align-items:baseline;gap:10px;
  padding:6px 8px;border-radius:10px;
  color:var(--muted);font-size:.875rem;
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
}
.footer-link:hover{color:var(--text);background:rgba(124,77,255,.14)}
.footer-link__no{font-family:var(--font-mono);font-size:.6875rem;color:rgba(154,166,191,.55)}
.footer-link:hover .footer-link__no{color:var(--gold)}

.footer-policy{
  grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px;
  padding-top:24px;border-top:1px solid var(--line);
}
.footer-policy__link{
  padding:8px 18px;border-radius:var(--pill);font-size:.8125rem;
  border:1px solid var(--line);background:rgba(124,77,255,.08);color:var(--text);
  transition:background var(--dur) var(--ease),border-color var(--dur) var(--ease);
}
.footer-policy__link:hover{background:rgba(124,77,255,.22);border-color:var(--violet)}

.footer-meta{
  grid-column:1/-1;display:grid;gap:8px;
  font-size:.875rem;color:var(--muted);
}
@media (min-width:760px){.footer-meta{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}}
.footer-meta__key{
  display:block;font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.18em;
  text-transform:uppercase;color:rgba(154,166,191,.7);
}
.footer-bottom{
  grid-column:1/-1;display:flex;flex-wrap:wrap;gap:10px 24px;justify-content:space-between;
  padding-top:18px;border-top:1px solid var(--line);
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.08em;color:var(--muted);
}
.footer-bottom__icp{color:rgba(154,166,191,.8)}

/* ---------- 面包屑 ---------- */
.breadcrumb{margin:22px 0 6px}
.breadcrumb__list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:.75rem;letter-spacing:.08em}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px;color:var(--muted)}
.breadcrumb__item+ .breadcrumb__item::before{content:"/";color:var(--line)}
.breadcrumb__link{color:var(--muted);transition:color var(--dur) var(--ease)}
.breadcrumb__link:hover{color:var(--gold)}

/* ---------- 卡片 ---------- */
.card{
  position:relative;
  padding:22px;border-radius:var(--radius-lg);
  background:linear-gradient(160deg,rgba(14,21,38,.95),rgba(26,16,51,.72));
  border:1px solid var(--line);
  transition:transform var(--dur) var(--ease),border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.card:hover{transform:translateY(-3px);border-color:rgba(124,77,255,.5);box-shadow:var(--shadow)}
.card__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.card__no{font-family:var(--font-mono);font-size:.75rem;letter-spacing:.2em;color:var(--gold)}
.card__title{font-size:1.25rem;margin-bottom:8px}
.card__meta{font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.card__body{color:var(--muted);font-size:.9375rem}
.card__foot{margin-top:16px;display:flex;flex-wrap:wrap;gap:8px;align-items:center}

/* ---------- 图像容器基础规则 ---------- */
.media-frame{
  position:relative;overflow:hidden;
  aspect-ratio:4/3;border-radius:var(--radius-md);
  border:1px solid var(--line);
  background:
    radial-gradient(120% 90% at 18% 8%, rgba(124,77,255,.38), transparent 62%),
    radial-gradient(90% 80% at 88% 92%, rgba(230,184,76,.2), transparent 66%),
    var(--violet-bg);
}
.media-frame--wide{aspect-ratio:16/7}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame > img,
.media-frame > picture > img{width:100%;height:100%;object-fit:cover}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    repeating-linear-gradient(to right, rgba(36,48,74,.4) 0 1px, transparent 1px 56px),
    repeating-linear-gradient(to bottom, rgba(36,48,74,.4) 0 1px, transparent 1px 56px);
  mix-blend-mode:screen;opacity:.5;
}
.media-frame__label{
  position:absolute;left:12px;bottom:12px;z-index:2;
  padding:5px 12px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.14em;text-transform:uppercase;
  color:var(--text);background:rgba(7,11,24,.72);border:1px solid var(--line);
}

/* ---------- 标签页 ---------- */
.tabs{display:grid;gap:20px}
.tabs__list{
  display:flex;gap:6px;overflow-x:auto;scrollbar-width:none;
  padding:6px;border:1px solid var(--line);border-radius:var(--pill);
  background:rgba(14,21,38,.8);
}
.tabs__list::-webkit-scrollbar{display:none}
.tab{
  white-space:nowrap;padding:9px 18px;border-radius:var(--pill);
  font-family:var(--font-mono);font-size:.8125rem;letter-spacing:.06em;color:var(--muted);
  transition:color var(--dur) var(--ease),background var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
}
.tab:hover{color:var(--text);background:rgba(124,77,255,.16)}
.tab[aria-selected="true"]{
  color:#fff;background:linear-gradient(135deg,var(--violet),var(--violet-deep));
  box-shadow:0 8px 22px rgba(91,43,217,.42);
}
.tabs__panel{padding-top:4px}

/* ---------- 长文排版 ---------- */
.prose{max-width:72ch;color:var(--muted);font-size:1rem}
.prose h2{color:var(--text);font-size:clamp(1.4rem,2.6vw,1.9rem);margin:34px 0 12px;text-transform:uppercase}
.prose h3{color:var(--text);font-size:1.25rem;margin:26px 0 10px}
.prose p{margin-bottom:14px}
.prose ul{margin:0 0 16px;display:grid;gap:8px}
.prose li{padding-left:22px;position:relative}
.prose li::before{content:"";position:absolute;left:0;top:.72em;width:10px;height:1px;background:var(--gold)}
.prose a{color:var(--violet-soft);border-bottom:1px solid rgba(179,157,255,.45)}
.prose a:hover{color:var(--gold);border-bottom-color:rgba(230,184,76,.6)}
.prose strong{color:var(--text)}

/* ---------- 显现动效 ---------- */
[data-reveal]{opacity:0;transform:translateY(14px);transition:opacity 240ms var(--ease),transform 240ms var(--ease)}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 无障碍与降级 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    transition-delay:0ms !important;
  }
  [data-reveal]{opacity:1;transform:none}
  .card:hover,.btn:hover,.pill:hover{transform:none}
}