/* ============================================================
   银河 GALAXY · 共享样式 /assets/site.css
   深空控制台：星幕蓝底 + 深空卡片 + 印刷纸层 + 离子青焦点
   ============================================================ */

:root{
  --gx-void:#050B1F;
  --gx-ink:#02040D;
  --gx-deep:#0E1B3C;
  --gx-violet:#7A5CFF;
  --gx-cyan:#2FE6D5;
  --gx-paper:#F0E6D2;
  --gx-pink:#FF7AD9;
  --gx-gold:#FFC46B;
  --gx-silver:#F4F7FF;
  --gx-mute:#A9B4CF;

  --gx-line:rgba(169,180,207,.2);
  --gx-line-strong:rgba(169,180,207,.42);
  --gx-glow-cyan:0 0 0 1px rgba(47,230,213,.5), 0 0 26px -8px rgba(47,230,213,.7);
  --gx-glow-violet:0 0 0 1px rgba(122,92,255,.5), 0 0 30px -10px rgba(122,92,255,.8);

  --gx-font-head:"Poppins","HarmonyOS Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gx-font-body:"Inter","Noto Sans SC","PingFang SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --gx-font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;

  --gx-header-h:68px;
  --gx-radius:10px;
  --gx-radius-lg:16px;
  --gx-maxw:1220px;
  --gx-gutter:clamp(18px,4vw,44px);
  --gx-ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
img,svg,video{display:block;max-width:100%}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--gx-cyan);outline-offset:3px;border-radius:3px}
::selection{background:rgba(122,92,255,.45);color:#fff}

/* ---------- 页面底层 ---------- */
body{
  min-height:100vh;
  font-family:var(--gx-font-body);
  font-size:clamp(15.5px,0.32vw + 14.6px,17px);
  line-height:1.75;
  color:var(--gx-silver);
  background-color:var(--gx-void);
  background-image:
    radial-gradient(1180px 620px at 84% -12%, rgba(122,92,255,.3), transparent 62%),
    radial-gradient(880px 520px at 4% 8%, rgba(47,230,213,.13), transparent 66%),
    linear-gradient(180deg,#06102A 0%, var(--gx-void) 44%, #03070F 100%);
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(122,92,255,.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(122,92,255,.06) 1px, transparent 1px);
  background-size:72px 72px;
  -webkit-mask-image:radial-gradient(120% 90% at 50% 0%, #000 0%, transparent 78%);
  mask-image:radial-gradient(120% 90% at 50% 0%, #000 0%, transparent 78%);
}
#main-content{position:relative;z-index:1}

/* ---------- 容器与排版 ---------- */
.gx-container{width:100%;max-width:var(--gx-maxw);margin-inline:auto;padding-inline:var(--gx-gutter)}

.gx-section{padding-block:clamp(48px,7vw,96px)}
.gx-section--tight{padding-block:clamp(30px,4vw,52px)}

.gx-eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--gx-font-mono);font-size:.72rem;letter-spacing:.2em;
  text-transform:uppercase;color:var(--gx-cyan);
}
.gx-eyebrow::before{content:"";width:26px;height:2px;background:currentColor;opacity:.85}

.gx-title-xl{
  font-family:var(--gx-font-head);font-weight:900;
  font-size:clamp(2.6rem,7.4vw,5.8rem);line-height:.96;letter-spacing:-.03em;
  text-shadow:0 0 48px rgba(122,92,255,.42);
}
.gx-title-lg{
  font-family:var(--gx-font-head);font-weight:800;
  font-size:clamp(1.7rem,3.4vw,2.7rem);line-height:1.14;letter-spacing:-.02em;
}
.gx-lead{font-size:clamp(1rem,1.35vw,1.16rem);line-height:1.8;color:#D8DFF3;max-width:62ch}

.gx-prose{max-width:70ch}
.gx-prose>*+*{margin-top:1.15em}
.gx-prose h2{font-family:var(--gx-font-head);font-weight:800;font-size:clamp(1.4rem,2.4vw,2rem);line-height:1.2;letter-spacing:-.02em;margin-top:1.7em}
.gx-prose h3{font-family:var(--gx-font-head);font-weight:700;font-size:clamp(1.08rem,1.6vw,1.28rem);line-height:1.3;margin-top:1.5em}
.gx-prose ul{display:grid;gap:9px}
.gx-prose ul li{position:relative;padding-left:20px}
.gx-prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:9px;height:2px;background:var(--gx-pink)}
.gx-prose a{color:var(--gx-cyan);border-bottom:1px solid rgba(47,230,213,.42)}
.gx-prose a:hover{color:var(--gx-paper);border-bottom-color:var(--gx-paper)}
.gx-prose strong{color:var(--gx-paper);font-weight:700}

/* ---------- 索引带 / 状态带 ---------- */
.gx-index-strip{
  display:flex;align-items:baseline;gap:clamp(12px,2vw,20px);flex-wrap:wrap;
  padding:14px 20px;
  border:1px solid rgba(240,230,210,.48);
  border-radius:3px;
  background:linear-gradient(100deg, rgba(240,230,210,.09), rgba(240,230,210,0) 72%);
  box-shadow:inset 0 0 0 1px rgba(240,230,210,.06);
}
.gx-index-strip__num{font-family:var(--gx-font-mono);font-size:.86rem;letter-spacing:.14em;color:var(--gx-gold)}
.gx-index-strip__title{font-family:var(--gx-font-head);font-weight:700;font-size:clamp(1rem,1.5vw,1.2rem);letter-spacing:.01em;color:var(--gx-paper)}

.gx-status-band{
  display:flex;flex-wrap:wrap;align-items:center;gap:14px 32px;
  padding:16px 20px;
  border:1px solid var(--gx-line);
  border-radius:var(--gx-radius);
  background-color:rgba(14,27,60,.55);
  background-image:
    linear-gradient(rgba(47,230,213,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(47,230,213,.055) 1px, transparent 1px);
  background-size:22px 22px;
  font-family:var(--gx-font-mono);font-size:.8rem;letter-spacing:.06em;color:var(--gx-mute);
}

/* ---------- 面包屑 ---------- */
.gx-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--gx-font-mono);font-size:.74rem;letter-spacing:.1em;color:var(--gx-mute);
}
.gx-breadcrumb a{color:var(--gx-mute);border-bottom:1px solid transparent;transition:color .2s var(--gx-ease),border-color .2s var(--gx-ease)}
.gx-breadcrumb a:hover{color:var(--gx-paper);border-bottom-color:var(--gx-cyan)}
.gx-breadcrumb__sep{color:rgba(169,180,207,.55)}
.gx-breadcrumb [aria-current="page"]{color:var(--gx-cyan)}

/* ---------- 栅格与卡片 ---------- */
.gx-grid{display:grid;gap:clamp(16px,2.2vw,28px);grid-template-columns:repeat(auto-fit,minmax(min(100%,240px),1fr))}
.gx-grid--2{grid-template-columns:repeat(auto-fit,minmax(min(100%,320px),1fr))}
.gx-grid--sidebar{grid-template-columns:minmax(0,1.6fr) minmax(0,1fr)}
@media (max-width:900px){.gx-grid--sidebar{grid-template-columns:1fr}}

.gx-card{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  border:1px solid var(--gx-line);
  border-radius:var(--gx-radius-lg);
  background:linear-gradient(165deg, rgba(14,27,60,.92), rgba(5,11,31,.88));
  transition:transform .25s var(--gx-ease), border-color .25s var(--gx-ease), box-shadow .25s var(--gx-ease);
}
.gx-card:hover{transform:translateY(-4px);border-color:rgba(47,230,213,.48);box-shadow:0 26px 54px -32px rgba(47,230,213,.8)}
.gx-card__head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.gx-card h3{font-family:var(--gx-font-head);font-weight:700;font-size:1.06rem;line-height:1.35;letter-spacing:-.01em}
.gx-card p{color:var(--gx-mute);font-size:.94rem}

.gx-paper{
  padding:clamp(18px,2.4vw,30px);
  border-radius:var(--gx-radius);
  background:var(--gx-paper);
  color:#0A1330;
  box-shadow:7px 7px 0 rgba(122,92,255,.32), 0 0 0 1px rgba(240,230,210,.55);
}
.gx-paper h3{font-family:var(--gx-font-head);font-weight:800;letter-spacing:-.01em}
.gx-paper p{color:#26325A}

.gx-tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:3px;border:1px solid currentColor;
  font-family:var(--gx-font-mono);font-size:.7rem;letter-spacing:.12em;
  background:rgba(255,255,255,.03);
}
.gx-tag--violet{color:var(--gx-violet)}
.gx-tag--cyan{color:var(--gx-cyan)}
.gx-tag--pink{color:var(--gx-pink)}
.gx-tag--gold{color:var(--gx-gold)}

.gx-stat{display:flex;flex-direction:column;gap:4px}
.gx-stat__num{font-family:var(--gx-font-mono);font-weight:700;font-size:clamp(1.6rem,2.6vw,2.3rem);line-height:1.1;color:var(--gx-gold);letter-spacing:-.02em}
.gx-stat__label{font-size:.82rem;letter-spacing:.06em;color:var(--gx-mute)}

/* ---------- 图片容器 ---------- */
.gx-media{
  position:relative;display:block;overflow:hidden;
  aspect-ratio:16/9;
  border:1px solid rgba(240,230,210,.22);
  border-radius:var(--gx-radius-lg);
  background-color:var(--gx-deep);
  background-image:
    radial-gradient(120% 90% at 22% 0%, rgba(122,92,255,.4), transparent 62%),
    radial-gradient(90% 70% at 92% 100%, rgba(47,230,213,.18), transparent 62%),
    linear-gradient(160deg,#0B1631,#050B1F 72%);
}
.gx-media img,.gx-media video{width:100%;height:100%;object-fit:cover}
.gx-media--4x3{aspect-ratio:4/3}
.gx-media--1x1{aspect-ratio:1/1}
.gx-media--tall{aspect-ratio:3/4}
.gx-media__cap{
  position:absolute;left:14px;bottom:14px;right:14px;
  font-family:var(--gx-font-mono);font-size:.72rem;letter-spacing:.1em;color:var(--gx-paper);
  text-shadow:0 1px 12px rgba(2,4,13,.9);
}

/* ---------- 按钮 ---------- */
.gx-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border:1px solid transparent;border-radius:999px;
  font-family:var(--gx-font-head);font-weight:700;font-size:.92rem;letter-spacing:.01em;
  transition:transform .2s var(--gx-ease), box-shadow .2s var(--gx-ease), background .2s var(--gx-ease), color .2s var(--gx-ease), border-color .2s var(--gx-ease);
}
.gx-btn--sm{padding:9px 16px;font-size:.84rem}
.gx-btn--primary{color:#0A0630;background:linear-gradient(120deg,var(--gx-cyan),var(--gx-violet) 78%);box-shadow:0 12px 32px -16px rgba(122,92,255,.95)}
.gx-btn--primary:hover{transform:translateY(-1px);box-shadow:0 16px 36px -14px rgba(47,230,213,.75)}
.gx-btn--ghost{color:var(--gx-silver);border-color:var(--gx-line-strong);background:rgba(240,230,210,.04)}
.gx-btn--ghost:hover{border-color:var(--gx-cyan);color:var(--gx-paper);box-shadow:var(--gx-glow-cyan)}

/* ---------- 显现协议 ---------- */
.gx-reveal{opacity:0;transform:translateY(16px);transition:opacity .55s var(--gx-ease), transform .55s var(--gx-ease)}
.gx-reveal.is-visible{opacity:1;transform:none}

/* ---------- 跳转链接 ---------- */
.gx-skip{
  position:absolute;left:16px;top:-70px;z-index:200;
  padding:10px 18px;border-radius:4px;
  background:var(--gx-paper);color:var(--gx-ink);
  font-family:var(--gx-font-head);font-weight:800;font-size:.86rem;
  transition:top .18s var(--gx-ease);
}
.gx-skip:focus{top:14px}

/* ============================================================
   页头
   ============================================================ */
.gx-header{
  position:sticky;top:0;z-index:80;
  background:linear-gradient(180deg, rgba(5,11,31,.94) 0%, rgba(5,11,31,.7) 58%, rgba(5,11,31,0) 100%);
  border-bottom:1px solid transparent;
  transition:background .28s var(--gx-ease), border-color .28s var(--gx-ease), box-shadow .28s var(--gx-ease);
}
.gx-header.is-scrolled{
  background:rgba(2,4,13,.94);
  border-bottom-color:rgba(240,230,210,.22);
  box-shadow:0 20px 50px -30px rgba(0,0,0,.95), 0 1px 0 rgba(47,230,213,.2);
  -webkit-backdrop-filter:blur(12px) saturate(140%);
  backdrop-filter:blur(12px) saturate(140%);
}
.gx-header__rail{
  height:3px;
  background-image:repeating-linear-gradient(90deg, rgba(240,230,210,.5) 0 2px, transparent 2px 11px);
  opacity:.45;
  transition:opacity .28s var(--gx-ease);
}
.gx-header.is-scrolled .gx-header__rail{
  opacity:.9;
  background-image:repeating-linear-gradient(90deg, rgba(47,230,213,.72) 0 2px, transparent 2px 11px);
}

.gx-header__inner{
  display:flex;align-items:center;gap:clamp(14px,2.2vw,30px);
  min-height:var(--gx-header-h);
}

/* 品牌 */
.gx-brand{display:inline-flex;align-items:center;gap:12px;flex:0 0 auto}
.gx-brand__mark{
  position:relative;width:34px;height:34px;flex:0 0 auto;border-radius:50%;
  background:radial-gradient(circle at 34% 30%, var(--gx-violet), #241056 62%, #0A0524 100%);
  box-shadow:0 0 0 1px rgba(240,230,210,.45), 0 0 22px -6px rgba(122,92,255,.95);
}
.gx-brand__mark::before{
  content:"";position:absolute;inset:6px;border-radius:50%;
  border:1px solid rgba(47,230,213,.85);border-top-color:transparent;
  transform:rotate(-32deg);
}
.gx-brand__mark::after{
  content:"";position:absolute;left:50%;top:50%;width:6px;height:6px;margin:-3px 0 0 -3px;border-radius:50%;
  background:var(--gx-paper);box-shadow:0 0 12px 2px rgba(240,230,210,.75);
}
.gx-brand__text{display:flex;flex-direction:column;line-height:1.18}
.gx-brand__name{font-family:var(--gx-font-head);font-weight:800;font-size:1.06rem;letter-spacing:.02em;color:var(--gx-silver)}
.gx-brand__tagline{font-family:var(--gx-font-mono);font-size:.63rem;letter-spacing:.14em;color:var(--gx-mute);white-space:nowrap}

/* 导航 */
.gx-nav{margin-inline:auto}
.gx-nav__list{display:flex;align-items:center;gap:min(1.8vw,22px)}
.gx-nav__item{position:relative}
.gx-nav__link{
  position:relative;display:inline-flex;align-items:center;gap:7px;
  padding:9px 2px;font-family:var(--gx-font-head);font-weight:600;font-size:.92rem;
  color:var(--gx-mute);
  transition:color .2s var(--gx-ease);
}
.gx-nav__index{font-family:var(--gx-font-mono);font-size:.62rem;letter-spacing:.08em;color:rgba(169,180,207,.6);transition:color .2s var(--gx-ease)}
.gx-nav__link::after{
  content:"";position:absolute;left:0;right:100%;bottom:0;height:2px;
  background:linear-gradient(90deg,var(--gx-cyan),var(--gx-violet));
  transition:right .28s var(--gx-ease);
}
.gx-nav__link:hover{color:var(--gx-silver)}
.gx-nav__link:hover::after{right:0}
.gx-nav__link:hover .gx-nav__index{color:var(--gx-cyan)}
.gx-nav__link[aria-current="page"]{color:var(--gx-silver)}
.gx-nav__link[aria-current="page"]::after{right:0;background:var(--gx-pink)}
.gx-nav__link[aria-current="page"] .gx-nav__index{color:var(--gx-pink)}

.gx-header__actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}

/* 移动目录按钮 */
.gx-nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 14px;border:1px solid var(--gx-line-strong);border-radius:999px;
  font-family:var(--gx-font-mono);font-size:.72rem;letter-spacing:.16em;color:var(--gx-silver);
  transition:border-color .2s var(--gx-ease), color .2s var(--gx-ease);
}
.gx-nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:18px}
.gx-nav-toggle__bars span{display:block;height:2px;background:currentColor;transition:transform .24s var(--gx-ease), opacity .24s var(--gx-ease)}
.gx-header[data-open] .gx-nav-toggle{border-color:var(--gx-pink);color:var(--gx-paper)}
.gx-header[data-open] .gx-nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.gx-header[data-open] .gx-nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* 滚动进度 */
.gx-progress{position:absolute;left:0;right:0;bottom:-1px;height:2px;background:rgba(169,180,207,.14);pointer-events:none}
.gx-progress__bar{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--gx-violet),var(--gx-cyan) 58%,var(--gx-pink));transition:width .12s linear}

/* ============================================================
   页脚
   ============================================================ */
.gx-footer{
  position:relative;z-index:1;margin-top:clamp(56px,8vw,110px);
  background:linear-gradient(180deg, rgba(2,4,13,.55), var(--gx-ink) 42%);
  border-top:1px solid rgba(240,230,210,.18);
  overflow:hidden;
}
.gx-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--gx-violet),var(--gx-cyan),var(--gx-pink),transparent);
  opacity:.85;
}
.gx-footer__glow{
  position:absolute;left:38%;right:-12%;bottom:-70%;height:360px;
  background:radial-gradient(closest-side, rgba(122,92,255,.34), transparent 72%);
  pointer-events:none;
}
.gx-footer__inner{position:relative;padding-block:clamp(44px,6.5vw,84px) 26px}
.gx-footer__grid{
  display:grid;gap:clamp(24px,3vw,44px);
  grid-template-columns:1.5fr 1fr 1fr 1.7fr;
}
.gx-footer__title{
  font-family:var(--gx-font-head);font-weight:800;font-size:.86rem;letter-spacing:.16em;color:var(--gx-paper);
}
.gx-footer__title::before{content:"";display:block;width:26px;height:2px;margin-bottom:10px;background:var(--gx-cyan)}
.gx-footer__brand .gx-footer__title{margin-bottom:14px}
.gx-footer__lines{font-size:.92rem;color:var(--gx-mute);max-width:34ch}
.gx-footer__lines+.gx-footer__lines{margin-top:6px}
.gx-footer__tagline{
  margin-top:16px;font-family:var(--gx-font-mono);font-size:.72rem;letter-spacing:.14em;color:var(--gx-cyan);
}
.gx-footer__list{display:flex;flex-direction:column;gap:10px;margin-top:16px}
.gx-footer__link{
  display:inline-block;font-size:.92rem;color:var(--gx-mute);
  transition:color .2s var(--gx-ease), transform .2s var(--gx-ease);
}
.gx-footer__link:hover{color:var(--gx-paper);transform:translateX(3px)}
.gx-footer__line{font-size:.88rem;line-height:1.7;color:var(--gx-mute)}
.gx-footer__legal{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 24px;
  margin-top:clamp(30px,4.5vw,56px);padding-top:20px;
  border-top:1px dashed rgba(169,180,207,.25);
}
.gx-footer__meta{font-family:var(--gx-font-mono);font-size:.75rem;letter-spacing:.06em;color:var(--gx-mute)}
.gx-footer__meta--end{margin-left:auto;color:rgba(169,180,207,.75)}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1040px){
  .gx-footer__grid{grid-template-columns:1.4fr 1fr 1fr;}
  .gx-footer__col:last-child{grid-column:1 / -1}
}

@media (max-width:900px){
  :root{--gx-header-h:60px}
  .gx-header__inner{gap:12px}
  .gx-brand__mark{width:30px;height:30px}
  .gx-brand__tagline{display:none}
  .gx-brand__name{font-size:1rem}

  .gx-nav{
    position:fixed;left:0;right:0;top:calc(var(--gx-header-h) + 3px);
    margin:0;
    background:rgba(3,6,20,.98);
    border-bottom:1px solid rgba(240,230,210,.2);
    box-shadow:0 30px 60px -40px rgba(0,0,0,.9);
    max-height:0;overflow:hidden;visibility:hidden;opacity:0;
    transition:max-height .34s var(--gx-ease), opacity .24s var(--gx-ease), visibility .24s var(--gx-ease);
  }
  .gx-header[data-open] .gx-nav{
    max-height:calc(100vh - var(--gx-header-h) - 3px);
    overflow-y:auto;visibility:visible;opacity:1;
  }
  .gx-nav__list{
    flex-direction:column;align-items:stretch;gap:0;
    padding:6px var(--gx-gutter) 22px;
  }
  .gx-nav__item{border-bottom:1px dashed rgba(169,180,207,.22)}
  .gx-nav__link{padding:15px 0;font-size:1rem}
  .gx-nav__link::after{display:none}
  .gx-nav__link[aria-current="page"]{color:var(--gx-cyan)}
  .gx-nav__link[aria-current="page"] .gx-nav__index{color:var(--gx-pink)}

  .gx-nav-toggle{display:inline-flex}
  .gx-btn--sm{padding:8px 14px;font-size:.8rem}
}

@media (max-width:720px){
  .gx-header__actions .gx-btn--primary{display:none}
  .gx-footer__grid{grid-template-columns:1fr;gap:30px}
  .gx-footer__col:last-child{grid-column:auto}
  .gx-footer__meta--end{margin-left:0}
  .gx-title-xl{font-size:clamp(2.2rem,11vw,3.4rem)}
}

@media (max-width:480px){
  .gx-nav-toggle__label{display:none}
  .gx-status-band{gap:10px 18px;font-size:.74rem}
}

/* ---------- 无障碍与动态偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .gx-reveal{opacity:1;transform:none}
  .gx-card:hover{transform:none}
  .gx-btn--primary:hover{transform:none}
  .gx-header{backdrop-filter:none;-webkit-backdrop-filter:none}
}