/* =========================================================
   黄金城娱乐会 · /assets/site.css
   共享外壳：令牌 / 重置 / 中文排版 / 悬浮胶囊导航 / 页脚 / 通用组件
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --gc-ink:#08090B;
  --gc-ink-2:#0E1013;
  --gc-card:#15171B;
  --gc-card-2:#1B1E23;
  --gc-gold:#C79A3B;
  --gc-amber:#F2B94B;
  --gc-copper:#8C5A2B;
  --gc-cyan:#3FE0D0;
  --gc-sand:#F6E7C1;
  --gc-mist:#C9CDD3;
  --gc-white:#FFFFFF;

  --gc-line:rgba(199,154,59,.26);
  --gc-line-strong:rgba(199,154,59,.55);
  --gc-line-soft:rgba(246,231,193,.12);

  --gc-grad-gold:linear-gradient(104deg,#F2B94B 0%,#C79A3B 46%,#8C5A2B 100%);
  --gc-grad-sheen:linear-gradient(120deg,rgba(242,185,75,.16),rgba(63,224,208,.08) 55%,rgba(140,90,43,.14));

  --gc-font-display:"Noto Serif SC","Source Han Serif SC","Songti SC",SimSun,serif;
  --gc-font-body:"Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --gc-font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono",monospace;

  --gc-radius:18px;
  --gc-radius-lg:28px;
  --gc-wrap:1280px;
  --gc-pad:clamp(1rem,3.2vw,3rem);
  --gc-shadow-soft:0 18px 50px -28px rgba(0,0,0,.9);
  --gc-shadow-gold:0 22px 60px -30px rgba(242,185,75,.35);
  --gc-ease:cubic-bezier(.22,.68,.28,1);
}

/* ---------- 2. 重置与基础 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--gc-ink);
  background-image:
    radial-gradient(1100px 620px at 88% -12%,rgba(140,90,43,.28),transparent 62%),
    radial-gradient(760px 480px at 4% 4%,rgba(63,224,208,.07),transparent 58%),
    linear-gradient(180deg,#08090B 0%,#0A0B0E 42%,#08090B 100%);
  color:var(--gc-sand);
  font-family:var(--gc-font-body);
  font-size:17px;
  line-height:1.88;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:var(--gc-font-display);color:var(--gc-white);line-height:1.26;margin:0 0 .7em;font-weight:800}
h1{font-size:clamp(2.1rem,5.2vw,4.2rem);letter-spacing:.01em}
h2{font-size:clamp(1.55rem,3.1vw,2.5rem)}
h3{font-size:clamp(1.18rem,2vw,1.6rem)}
p{margin:0 0 1.1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{outline:2px solid var(--gc-cyan);outline-offset:3px;border-radius:6px}
::selection{background:rgba(242,185,75,.3);color:#fff}

/* ---------- 3. 跳转链接 ---------- */
.gc-skip{
  position:fixed;top:.6rem;left:50%;z-index:200;
  transform:translate(-50%,-180%);
  padding:.6rem 1.15rem;border-radius:999px;
  background:var(--gc-grad-gold);color:#120D04;
  font-family:var(--gc-font-mono);font-size:.8rem;font-weight:700;letter-spacing:.08em;
  transition:transform .26s var(--gc-ease);
}
.gc-skip:focus{transform:translate(-50%,0)}

/* ---------- 4. 工具类 ---------- */
.gc-container{width:100%;max-width:var(--gc-wrap);margin-inline:auto;padding-inline:var(--gc-pad)}
.gc-eyebrow{
  display:inline-flex;align-items:center;gap:.6rem;
  font-family:var(--gc-font-mono);font-size:.72rem;letter-spacing:.24em;
  text-transform:uppercase;color:var(--gc-gold);
}
.gc-eyebrow::before{content:"";width:24px;height:1px;background:var(--gc-grad-gold)}
.gc-eyebrow--cyan{color:var(--gc-cyan)}
.gc-eyebrow--cyan::before{background:linear-gradient(90deg,var(--gc-cyan),rgba(63,224,208,0))}
.gc-gold-text{background:var(--gc-grad-gold);-webkit-background-clip:text;background-clip:text;color:transparent}
.gc-mono{font-family:var(--gc-font-mono);font-size:.8rem;letter-spacing:.08em;color:var(--gc-mist)}
.gc-rule{
  height:1px;border:0;margin:clamp(2rem,5vw,3.5rem) 0;
  background:linear-gradient(90deg,rgba(199,154,59,0),rgba(199,154,59,.5) 22%,rgba(63,224,208,.4) 76%,rgba(199,154,59,0));
}
.gc-slash{
  height:2px;margin:clamp(2rem,4vw,3rem) 0;transform:skewY(-1.1deg);
  background:linear-gradient(90deg,transparent,rgba(199,154,59,.65) 32%,rgba(63,224,208,.45) 72%,transparent);
}
.gc-tag{
  display:inline-flex;align-items:center;gap:.4rem;
  padding:.3rem .72rem;border:1px solid var(--gc-line);border-radius:999px;
  background:rgba(21,23,27,.7);color:var(--gc-sand);
  font-family:var(--gc-font-mono);font-size:.7rem;letter-spacing:.08em;
}
.gc-tag--gold{border-color:rgba(242,185,75,.45);color:var(--gc-amber)}
.gc-tag--cyan{border-color:rgba(63,224,208,.42);color:var(--gc-cyan)}
.gc-tag-row{display:flex;flex-wrap:wrap;gap:.5rem}

/* ---------- 5. 按钮 ---------- */
.gc-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  padding:.72rem 1.3rem;border:1px solid transparent;border-radius:999px;
  font-size:.92rem;font-weight:600;line-height:1;white-space:nowrap;
  transition:transform .22s var(--gc-ease),box-shadow .22s var(--gc-ease),background-color .22s var(--gc-ease),color .22s var(--gc-ease),border-color .22s var(--gc-ease);
}
.gc-btn:hover{transform:translateY(-2px)}
.gc-btn--gold{background:var(--gc-grad-gold);color:#120D04;box-shadow:0 12px 30px -16px rgba(242,185,75,.7)}
.gc-btn--gold:hover{box-shadow:0 18px 40px -16px rgba(242,185,75,.85)}
.gc-btn--ghost{border-color:var(--gc-line-strong);background:rgba(21,23,27,.5);color:var(--gc-sand)}
.gc-btn--ghost:hover{border-color:var(--gc-amber);color:var(--gc-amber)}
.gc-btn--line{padding:.35rem 0;border:0;border-bottom:1px solid var(--gc-line-strong);border-radius:0;color:var(--gc-amber)}
.gc-btn--line:hover{transform:none;color:var(--gc-white);border-color:var(--gc-amber)}
.gc-btn--block{width:100%}

/* ---------- 6. 悬浮胶囊导航 ---------- */
.gc-header{
  position:sticky;top:0;z-index:80;
  padding:.7rem var(--gc-pad) 0;
}
.gc-header::before{
  content:"";position:absolute;inset:0 0 -1.6rem;z-index:-1;pointer-events:none;
  background:linear-gradient(180deg,rgba(8,9,11,.94) 0%,rgba(8,9,11,.7) 58%,rgba(8,9,11,0) 100%);
}
.gc-header__rail{
  position:relative;display:flex;align-items:center;
  gap:clamp(.5rem,1.6vw,1.3rem);
  max-width:var(--gc-wrap);margin-inline:auto;
  padding:.5rem .55rem .5rem .8rem;
  border:1px solid var(--gc-line);border-radius:999px;
  background:linear-gradient(120deg,rgba(23,26,31,.93),rgba(11,12,15,.88));
  box-shadow:var(--gc-shadow-soft);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:border-color .3s var(--gc-ease),box-shadow .3s var(--gc-ease),background .3s var(--gc-ease);
}
.gc-header.is-scrolled .gc-header__rail{
  border-color:rgba(242,185,75,.42);
  box-shadow:0 24px 60px -32px rgba(242,185,75,.55),0 16px 40px -30px #000;
}
.gc-brand{display:inline-flex;align-items:center;gap:.7rem;flex:0 0 auto;min-width:0}
.gc-brand__mark{
  display:grid;place-items:center;flex:0 0 auto;
  width:38px;height:38px;border-radius:12px;
  background:var(--gc-grad-gold);color:#0A0B0D;
  font-family:var(--gc-font-display);font-size:1.08rem;font-weight:800;
  box-shadow:0 10px 26px -14px rgba(242,185,75,.9);
  transform:rotate(-6deg);
}
.gc-brand__text{display:flex;flex-direction:column;line-height:1.15;min-width:0}
.gc-brand__name{font-family:var(--gc-font-display);font-size:1.02rem;font-weight:800;color:var(--gc-white);letter-spacing:.06em;white-space:nowrap}
.gc-brand__tag{margin-top:.28rem;font-family:var(--gc-font-mono);font-size:.62rem;letter-spacing:.1em;color:var(--gc-gold);white-space:nowrap}
.gc-brand--stack{align-items:flex-start}
.gc-brand--stack .gc-brand__name{font-size:1.18rem}
.gc-brand--stack .gc-brand__tag{white-space:normal}

.gc-nav{flex:1 1 auto;display:flex;justify-content:center;min-width:0}
.gc-nav__list{
  display:flex;align-items:center;gap:.1rem;
  padding:.24rem;border:1px solid rgba(199,154,59,.16);border-radius:999px;
  background:rgba(8,9,11,.6);
}
.gc-nav__item{display:flex}
.gc-nav__link{
  display:inline-flex;align-items:baseline;gap:.42rem;
  padding:.5rem .82rem;border-radius:999px;
  font-size:.9rem;color:var(--gc-mist);white-space:nowrap;
  transition:color .2s var(--gc-ease),background-color .2s var(--gc-ease);
}
.gc-nav__link:hover{color:var(--gc-amber);background:rgba(242,185,75,.08)}
.gc-nav__idx{font-family:var(--gc-font-mono);font-size:.62rem;color:rgba(199,154,59,.78)}
.gc-nav__link[aria-current="page"]{background:var(--gc-grad-gold);color:#140F05;font-weight:700}
.gc-nav__link[aria-current="page"] .gc-nav__idx{color:rgba(20,15,5,.62)}

.gc-header__tail{display:flex;align-items:center;gap:.5rem;flex:0 0 auto}
.gc-header__cta{padding:.6rem 1.1rem;font-size:.88rem}
.gc-nav-toggle{
  display:none;align-items:center;gap:.5rem;
  padding:.55rem .9rem;border:1px solid var(--gc-line);border-radius:999px;
  color:var(--gc-sand);transition:border-color .2s var(--gc-ease),color .2s var(--gc-ease);
}
.gc-nav-toggle:hover{border-color:var(--gc-amber);color:var(--gc-amber)}
.gc-nav-toggle__label{font-family:var(--gc-font-mono);font-size:.72rem;letter-spacing:.14em}
.gc-nav-toggle__bars{position:relative;display:block;width:16px;height:10px}
.gc-nav-toggle__bars::before,
.gc-nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:16px;height:1.5px;background:var(--gc-amber);
  transition:transform .24s var(--gc-ease),top .24s var(--gc-ease);
}
.gc-nav-toggle__bars::before{top:0}
.gc-nav-toggle__bars::after{top:8px}
.gc-header[data-open] .gc-nav-toggle__bars::before{top:4px;transform:rotate(45deg)}
.gc-header[data-open] .gc-nav-toggle__bars::after{top:4px;transform:rotate(-45deg)}

.gc-progress{
  display:block;height:2px;max-width:var(--gc-wrap);margin:.35rem auto 0;border-radius:2px;
  background:linear-gradient(90deg,var(--gc-amber),var(--gc-cyan));
  transform:scaleX(0);transform-origin:0 50%;opacity:.85;
}

/* ---------- 7. 页脚 ---------- */
.gc-footer{
  position:relative;margin-top:clamp(3rem,8vw,6rem);
  border-top:1px solid var(--gc-line);
  background:
    radial-gradient(900px 380px at 82% 0%,rgba(140,90,43,.24),transparent 62%),
    linear-gradient(180deg,rgba(11,12,15,.5),rgba(8,9,11,1) 42%);
  color:var(--gc-mist);
}
.gc-footer__edge{
  display:block;height:3px;
  background:linear-gradient(90deg,rgba(199,154,59,0),var(--gc-gold) 18%,var(--gc-amber) 50%,var(--gc-cyan) 84%,rgba(63,224,208,0));
  opacity:.8;
}
.gc-footer__inner{
  display:grid;
  grid-template-columns:minmax(0,1.35fr) minmax(0,1.05fr) minmax(0,1.15fr);
  gap:clamp(1.6rem,4vw,3.4rem);
  max-width:var(--gc-wrap);margin-inline:auto;
  padding:clamp(2.2rem,5vw,3.6rem) var(--gc-pad) clamp(1.6rem,3vw,2.4rem);
}
.gc-footer__crest{max-width:40ch;min-width:0}
.gc-footer__lede{margin:1.1rem 0 0;font-size:.95rem;color:var(--gc-mist)}
.gc-footer__stats{
  display:flex;gap:1.5rem;margin-top:1.4rem;padding-top:1.2rem;
  border-top:1px solid var(--gc-line-soft);
}
.gc-footer__stat{display:flex;flex-direction:column;gap:.2rem}
.gc-footer__stat b{font-family:var(--gc-font-mono);font-size:1.35rem;letter-spacing:.04em;color:var(--gc-amber);font-weight:600}
.gc-footer__stat span{font-family:var(--gc-font-mono);font-size:.66rem;letter-spacing:.14em;color:rgba(201,205,211,.7)}

.gc-footer__nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:clamp(1.2rem,3vw,2rem);min-width:0}
.gc-footer__group{min-width:0}
.gc-footer__gtitle{
  margin:0 0 .9rem;font-family:var(--gc-font-mono);font-size:.72rem;font-weight:600;
  letter-spacing:.2em;text-transform:uppercase;color:var(--gc-gold);
}
.gc-footer__links{display:flex;flex-direction:column;gap:.55rem}
.gc-footer__link{
  position:relative;display:inline-block;padding-left:.95rem;
  font-size:.94rem;color:var(--gc-mist);
  transition:color .2s var(--gc-ease),transform .2s var(--gc-ease);
}
.gc-footer__link::before{
  content:"";position:absolute;left:0;top:.75em;width:5px;height:1px;
  background:rgba(199,154,59,.7);transition:width .2s var(--gc-ease),background-color .2s var(--gc-ease);
}
.gc-footer__link:hover{color:var(--gc-amber);transform:translateX(3px)}
.gc-footer__link:hover::before{width:10px;background:var(--gc-cyan)}

.gc-footer__contact{min-width:0}
.gc-footer__clist{display:flex;flex-direction:column;gap:.75rem}
.gc-footer__crow{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:.6rem;
  padding:.55rem .7rem;border:1px solid var(--gc-line-soft);border-radius:14px;
  background:rgba(21,23,27,.6);
}
.gc-footer__crow--stack{grid-template-columns:auto minmax(0,1fr)}
.gc-footer__cterm{font-family:var(--gc-font-mono);font-size:.66rem;letter-spacing:.14em;color:var(--gc-gold)}
.gc-footer__cval{font-family:var(--gc-font-mono);font-size:.8rem;color:var(--gc-sand);overflow-wrap:anywhere;min-width:0}
.gc-footer__copy{
  padding:.3rem .62rem;border:1px solid var(--gc-line);border-radius:999px;
  font-family:var(--gc-font-mono);font-size:.64rem;letter-spacing:.1em;color:var(--gc-mist);
  transition:color .2s var(--gc-ease),background-color .2s var(--gc-ease),border-color .2s var(--gc-ease);
}
.gc-footer__copy:hover{color:#120D04;background:var(--gc-amber);border-color:var(--gc-amber)}
.gc-footer__copy[data-copied="true"]{color:var(--gc-cyan);border-color:var(--gc-cyan);background:rgba(63,224,208,.1)}
.gc-footer__note{margin:.9rem 0 0;font-size:.8rem;line-height:1.7;color:rgba(201,205,211,.72)}

.gc-footer__base{border-top:1px solid var(--gc-line-soft);background:rgba(5,6,7,.72)}
.gc-footer__baseinner{
  display:flex;flex-wrap:wrap;align-items:center;gap:.7rem 1.6rem;
  max-width:var(--gc-wrap);margin-inline:auto;padding:1.1rem var(--gc-pad);
}
.gc-footer__icp,.gc-footer__rights{font-family:var(--gc-font-mono);font-size:.72rem;color:rgba(201,205,211,.72)}
.gc-footer__legal{display:flex;flex-wrap:wrap;gap:1.1rem;margin-left:auto}
.gc-footer__legal-link{
  font-family:var(--gc-font-mono);font-size:.72rem;color:var(--gc-sand);
  border-bottom:1px solid transparent;transition:color .2s var(--gc-ease),border-color .2s var(--gc-ease);
}
.gc-footer__legal-link:hover{color:var(--gc-amber);border-color:var(--gc-line-strong)}

/* ---------- 8. 版面骨架 ---------- */
.gc-section{padding-block:clamp(2.6rem,7vw,5.4rem)}
.gc-section--tight{padding-block:clamp(1.6rem,4vw,3rem)}
.gc-section__head{
  display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);
  gap:clamp(1rem,3vw,2.6rem);align-items:end;
  margin-bottom:clamp(1.6rem,4vw,2.6rem);
}
.gc-section__title{margin:0}
.gc-section__note{margin:0;font-size:.95rem;color:var(--gc-mist)}
.gc-grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(1rem,2vw,1.75rem)}
.gc-col-3{grid-column:span 3}
.gc-col-4{grid-column:span 4}
.gc-col-5{grid-column:span 5}
.gc-col-6{grid-column:span 6}
.gc-col-7{grid-column:span 7}
.gc-col-8{grid-column:span 8}
.gc-col-12{grid-column:span 12}
.gc-push-1{grid-column-start:2}
.gc-stack{display:flex;flex-direction:column;gap:1rem}
.gc-cluster{display:flex;flex-wrap:wrap;gap:.7rem;align-items:center}
.gc-prose{max-width:72ch}
.gc-prose p,.gc-prose li{color:var(--gc-sand)}
.gc-prose h2,.gc-prose h3{margin-top:1.8em}

/* ---------- 9. 面包屑 ---------- */
.gc-breadcrumb{
  display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;margin:0 0 1.2rem;padding:0;
  font-family:var(--gc-font-mono);font-size:.72rem;letter-spacing:.06em;color:rgba(201,205,211,.7);
}
.gc-breadcrumb__item{display:inline-flex;align-items:center;gap:.5rem}
.gc-breadcrumb__link{color:var(--gc-mist);border-bottom:1px solid transparent;transition:color .2s var(--gc-ease),border-color .2s var(--gc-ease)}
.gc-breadcrumb__link:hover{color:var(--gc-amber);border-color:var(--gc-line-strong)}
.gc-breadcrumb__sep{color:rgba(199,154,59,.7)}
.gc-breadcrumb__current{color:var(--gc-amber)}

/* ---------- 10. 资料卡 / 索引表 / 图片框 / 提示块 ---------- */
.gc-card{
  position:relative;display:flex;flex-direction:column;gap:.8rem;overflow:hidden;
  padding:clamp(1.1rem,2.2vw,1.7rem);
  border:1px solid var(--gc-line);border-radius:var(--gc-radius);
  background:linear-gradient(160deg,rgba(23,26,31,.95),rgba(12,13,16,.95));
  box-shadow:var(--gc-shadow-soft);
  transition:transform .3s var(--gc-ease),border-color .3s var(--gc-ease),box-shadow .3s var(--gc-ease);
}
.gc-card::after{
  content:"";position:absolute;inset:0;opacity:0;pointer-events:none;
  background:radial-gradient(120% 80% at 12% 0%,rgba(242,185,75,.13),transparent 58%);
  transition:opacity .35s var(--gc-ease);
}
.gc-card:hover{transform:translateY(-4px);border-color:rgba(242,185,75,.48);box-shadow:var(--gc-shadow-soft),var(--gc-shadow-gold)}
.gc-card:hover::after{opacity:1}
.gc-card--slant{
  border-radius:calc(var(--gc-radius) - 4px);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.gc-card--flat{background:rgba(21,23,27,.55);box-shadow:none}
.gc-card__num{font-family:var(--gc-font-mono);font-size:.7rem;letter-spacing:.2em;color:var(--gc-gold)}
.gc-card__title{margin:0;font-size:clamp(1.08rem,1.7vw,1.34rem)}
.gc-card__meta{font-family:var(--gc-font-mono);font-size:.7rem;letter-spacing:.08em;color:rgba(201,205,211,.75)}
.gc-card__body{margin:0;font-size:.95rem;color:var(--gc-mist)}
.gc-card__foot{margin-top:auto;display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;padding-top:.8rem}
.gc-card__link{font-family:var(--gc-font-mono);font-size:.76rem;letter-spacing:.1em;color:var(--gc-amber)}
.gc-card__link::after{content:" →"}

.gc-index{display:flex;flex-direction:column;border-top:1px solid var(--gc-line-soft)}
.gc-index__row{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:1rem;
  padding:.85rem .4rem;border-bottom:1px solid var(--gc-line-soft);
  transition:background-color .2s var(--gc-ease),padding-left .2s var(--gc-ease);
}
.gc-index__row:hover{background:rgba(242,185,75,.05);padding-left:.85rem}
.gc-index__num{font-family:var(--gc-font-mono);font-size:.72rem;color:var(--gc-gold)}
.gc-index__label{font-size:.98rem;color:var(--gc-sand);min-width:0}
.gc-index__value{font-family:var(--gc-font-mono);font-size:.76rem;color:var(--gc-cyan)}
.gc-index__value--gold{color:var(--gc-amber)}

.gc-figure{margin:0;min-width:0}
.gc-media{
  position:relative;display:block;width:100%;overflow:hidden;
  border:1px solid var(--gc-line);border-radius:var(--gc-radius);
  background:linear-gradient(160deg,#191b20 0%,#0C0E11 52%,#1C1309 100%);
  box-shadow:var(--gc-shadow-soft);
}
.gc-media::before{
  content:"";position:absolute;inset:0;z-index:1;pointer-events:none;mix-blend-mode:screen;
  background:linear-gradient(115deg,rgba(242,185,75,.2),transparent 44%,rgba(63,224,208,.13));
}
.gc-media > img{width:100%;height:100%;object-fit:cover;position:relative;z-index:0}
.gc-media--wide{aspect-ratio:16/9}
.gc-media--tall{aspect-ratio:3/4}
.gc-media--square{aspect-ratio:1/1}
.gc-media--hero{aspect-ratio:21/9}
.gc-media--slant{
  border-radius:var(--gc-radius) var(--gc-radius) 0 0;
  clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),calc(100% - 34px) 100%,0 100%);
}
.gc-figure__cap{margin-top:.7rem;font-family:var(--gc-font-mono);font-size:.7rem;line-height:1.7;letter-spacing:.05em;color:rgba(201,205,211,.75)}

.gc-note{
  position:relative;padding:1rem 1.2rem 1rem 1.4rem;
  border-left:2px solid var(--gc-amber);border-radius:0 14px 14px 0;
  background:rgba(21,23,27,.72);color:var(--gc-mist);font-size:.94rem;
}
.gc-note--cyan{border-left-color:var(--gc-cyan)}

/* ---------- 11. 显现动效（由 JS 添加 .gc-motion 后生效） ---------- */
.gc-motion [data-reveal]{
  opacity:0;transform:translate3d(0,20px,0);
  transition:opacity .7s var(--gc-ease),transform .7s var(--gc-ease);
}
.gc-motion [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 12. 平板 ---------- */
@media (max-width:1100px){
  .gc-col-3,.gc-col-4{grid-column:span 6}
  .gc-footer__inner{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .gc-footer__contact{grid-column:1 / -1}
  .gc-footer__crest{max-width:none}
}

/* ---------- 13. 移动导航与紧凑排版 ---------- */
@media (max-width:1040px){
  .gc-nav{display:none}
  .gc-nav-toggle{display:inline-flex}
  .gc-header[data-open] .gc-nav{
    display:block;position:absolute;top:calc(100% + .6rem);left:0;right:0;z-index:5;
    padding:.6rem;border:1px solid var(--gc-line);border-radius:24px;
    background:rgba(11,12,15,.98);
    box-shadow:var(--gc-shadow-soft),var(--gc-shadow-gold);
    backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);
  }
  .gc-nav__list{flex-direction:column;align-items:stretch;gap:.15rem;padding:0;border:0;background:none}
  .gc-nav__item{border-bottom:1px solid var(--gc-line-soft)}
  .gc-nav__item:last-child{border-bottom:0}
  .gc-nav__link{padding:.85rem 1rem;border-radius:14px;font-size:1rem;justify-content:space-between}
  .gc-nav__link[aria-current="page"]{border-radius:14px}
}
@media (max-width:820px){
  .gc-col-3,.gc-col-4,.gc-col-5,.gc-col-6,.gc-col-7,.gc-col-8{grid-column:span 12}
  .gc-push-1{grid-column-start:auto}
  .gc-section__head{grid-template-columns:minmax(0,1fr)}
  .gc-footer__inner{grid-template-columns:minmax(0,1fr)}
  .gc-footer__contact{grid-column:auto}
  .gc-footer__legal{margin-left:0;width:100%}
}
@media (max-width:780px){
  .gc-brand__tag{display:none}
  .gc-footer__nav{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:640px){
  body{font-size:16px;line-height:1.82}
  .gc-header{padding-top:.5rem}
  .gc-header__rail{padding:.45rem .5rem .45rem .65rem;gap:.4rem}
  .gc-brand__mark{width:34px;height:34px;border-radius:10px;font-size:1rem}
  .gc-footer__stats{gap:1.1rem}
  .gc-index__row{grid-template-columns:auto minmax(0,1fr);row-gap:.3rem}
  .gc-index__value{grid-column:2}
}
@media (max-width:520px){
  .gc-header__cta{display:none}
  .gc-footer__stats{flex-wrap:wrap;row-gap:.8rem}
  .gc-footer__crow{grid-template-columns:minmax(0,1fr) auto}
  .gc-footer__crow .gc-footer__cterm{grid-column:1 / -1}
}

/* ---------- 14. 降低动态偏好 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .gc-motion [data-reveal]{opacity:1 !important;transform:none !important}
  .gc-card:hover{transform:none}
  .gc-btn:hover{transform:none}
  .gc-footer__link:hover{transform:none}
  .gc-progress{opacity:.45}
}