/* =========================================================
   十八游戏入口 / SHIBA GATE — 共享 Site Kit
   /assets/site.css
   1 令牌 · 2 重置 · 3 基座 · 4 排版 · 5 按钮 ·
   6 面包屑 · 7 骨架 · 8 组件 · 9 头部 · 10 页脚 ·
   11 动效 · 12 响应式 · 13 减弱动效
   ========================================================= */

/* ---------- 1 令牌 ---------- */
:root{
  --sg-night:#07070D;
  --sg-deep:#0E0B1A;
  --sg-violet:#6C2BFF;
  --sg-violet-lift:#8148ff;
  --sg-cyan:#00E5FF;
  --sg-orange:#FF6B1A;
  --sg-paper:#F7F0E3;
  --sg-mist:#F5F1FF;
  --sg-blueprint:#A99BC7;
  --sg-mint:#7CFFB2;
  --sg-ink:#251A14;

  --sg-line:rgba(169,155,199,.22);
  --sg-line-soft:rgba(169,155,199,.13);
  --sg-line-cyan:rgba(0,229,255,.34);

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

  --sg-header-h:106px;
  --sg-gutter:32px;
  --sg-max:1440px;
  --sg-ease:cubic-bezier(.22,.8,.3,1);
  --sg-shadow:0 26px 64px -34px rgba(0,0,0,.95);
}

/* ---------- 2 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
input,select,textarea{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}
hr{border:0}

/* ---------- 3 基座 ---------- */
body{
  min-height:100vh;
  overflow-x:hidden;
  background-color:var(--sg-night);
  background-image:
    linear-gradient(rgba(169,155,199,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(169,155,199,.05) 1px,transparent 1px),
    radial-gradient(circle at 84% -8%,rgba(108,43,255,.24),transparent 56%),
    radial-gradient(circle at 6% 4%,rgba(0,229,255,.10),transparent 48%);
  background-size:96px 96px,96px 96px,100% 100%,100% 100%;
  color:var(--sg-mist);
  font-family:var(--sg-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
::selection{background:var(--sg-violet);color:#fff}
:where(a,button,[tabindex]):focus-visible{
  outline:2px solid var(--sg-cyan);
  outline-offset:3px;
  box-shadow:0 0 0 6px rgba(0,229,255,.16);
}

.sg-skip{
  position:fixed;
  top:10px;
  left:10px;
  z-index:200;
  padding:.7em 1.1em;
  font-size:.85rem;
  font-weight:700;
  color:var(--sg-ink);
  background:var(--sg-paper);
  border:1px solid var(--sg-ink);
  transform:translateY(-180%);
  transition:transform .2s var(--sg-ease);
}
.sg-skip:focus-visible{transform:translateY(0)}

.sg-container{
  width:100%;
  max-width:var(--sg-max);
  margin:0 auto;
  padding:0 var(--sg-gutter);
}
.sg-main-top{padding-top:var(--sg-header-h)}
.sg-visually-hidden{
  position:absolute;
  width:1px;height:1px;
  margin:-1px;padding:0;
  overflow:hidden;
  clip:rect(0 0 0 0);
  white-space:nowrap;
  border:0;
}

/* ---------- 4 排版 ---------- */
h1,h2,h3,h4{
  font-family:var(--sg-sans);
  font-weight:800;
  line-height:1.14;
  letter-spacing:-.015em;
  color:#fff;
}
h1{font-size:clamp(2rem,4.4vw,3.4rem)}
h2{font-size:clamp(1.5rem,2.8vw,2.25rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.45rem)}
p{line-height:1.8}
strong{font-weight:800;color:#fff}

.sg-display{
  display:inline-block;
  max-width:16ch;
  font-family:var(--sg-sans);
  font-weight:900;
  font-size:clamp(2.6rem,7vw,6rem);
  line-height:.98;
  letter-spacing:-.035em;
  transform:skewX(-6deg);
  transform-origin:left bottom;
  background:linear-gradient(104deg,#ffffff 0%,#ffffff 52%,var(--sg-cyan) 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.sg-eyebrow{
  display:inline-flex;
  align-items:center;
  gap:.7em;
  font-family:var(--sg-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--sg-cyan);
  line-height:1.4;
}
.sg-eyebrow::before{
  content:"";
  display:block;
  width:28px;
  height:1px;
  background:var(--sg-cyan);
  flex:0 0 auto;
}

.sg-rule{
  height:1px;
  border:0;
  background:linear-gradient(90deg,var(--sg-cyan),rgba(0,229,255,.06));
}

.sg-section{padding:96px 0}
.sg-section--tight{padding:56px 0}

.sg-prose{
  max-width:68ch;
  font-size:1rem;
  line-height:1.85;
  color:rgba(245,241,255,.82);
}
.sg-prose p + p{margin-top:1.1em}
.sg-prose h2,.sg-prose h3{margin-top:1.9em;margin-bottom:.55em}
.sg-prose a{color:var(--sg-cyan);border-bottom:1px solid rgba(0,229,255,.42)}
.sg-prose a:hover{color:#fff;border-bottom-color:#fff}
.sg-prose ul{list-style:none;margin:1em 0}
.sg-prose ul li{position:relative;padding-left:1.4em;margin:.4em 0}
.sg-prose ul li::before{
  content:"";
  position:absolute;
  left:0;top:.72em;
  width:8px;height:1px;
  background:var(--sg-cyan);
}

.sg-grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:24px;
}

/* ---------- 5 按钮 ---------- */
.sg-btn{
  --sg-btn-bg:transparent;
  --sg-btn-fg:var(--sg-mist);
  --sg-btn-bd:rgba(169,155,199,.46);
  position:relative;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:.55em;
  padding:.8em 1.4em;
  font-family:var(--sg-sans);
  font-size:.875rem;
  font-weight:700;
  letter-spacing:.06em;
  line-height:1.2;
  color:var(--sg-btn-fg);
  background:var(--sg-btn-bg);
  border:1px solid var(--sg-btn-bd);
  border-radius:2px;
  transition:transform .18s var(--sg-ease),box-shadow .18s var(--sg-ease),
             background-color .18s var(--sg-ease),color .18s var(--sg-ease),
             border-color .18s var(--sg-ease);
}
.sg-btn::before{
  content:"";
  position:absolute;
  left:-1px;top:-1px;bottom:-1px;
  width:3px;
  background:var(--sg-cyan);
  opacity:0;
  transition:opacity .18s var(--sg-ease);
}
.sg-btn:hover{transform:translateY(-2px)}
.sg-btn:hover::before{opacity:1}
.sg-btn:active{transform:translateY(0)}
.sg-btn--primary{
  --sg-btn-bg:var(--sg-violet);
  --sg-btn-fg:#fff;
  --sg-btn-bd:rgba(0,229,255,.5);
  box-shadow:0 14px 32px -18px rgba(108,43,255,.95);
}
.sg-btn--primary:hover{
  --sg-btn-bg:var(--sg-violet-lift);
  box-shadow:0 0 0 1px rgba(0,229,255,.55),0 20px 40px -20px rgba(108,43,255,1);
}
.sg-btn--ghost{--sg-btn-fg:rgba(245,241,255,.88)}
.sg-btn--ghost:hover{
  --sg-btn-bd:var(--sg-cyan);
  --sg-btn-fg:var(--sg-cyan);
}
.sg-btn--ink{
  --sg-btn-bg:var(--sg-ink);
  --sg-btn-fg:var(--sg-paper);
  --sg-btn-bd:var(--sg-ink);
}
.sg-btn--ink::before{background:var(--sg-orange)}
.sg-btn--ink:hover{--sg-btn-bg:#3a2820}
.sg-btn--inkline{
  --sg-btn-bg:transparent;
  --sg-btn-fg:var(--sg-ink);
  --sg-btn-bd:rgba(37,26,20,.5);
}
.sg-btn--inkline::before{background:var(--sg-orange)}
.sg-btn--inkline:hover{
  --sg-btn-bd:var(--sg-ink);
  --sg-btn-bg:rgba(37,26,20,.07);
}
.sg-btn--sm{padding:.58em 1em;font-size:.78rem;letter-spacing:.05em}
.sg-btn--block{width:100%}

/* ---------- 6 面包屑 ---------- */
.sg-breadcrumb{
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sg-blueprint);
}
.sg-breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px;
}
.sg-breadcrumb__item{
  display:inline-flex;
  align-items:center;
  gap:10px;
  line-height:1.6;
}
.sg-breadcrumb__item + .sg-breadcrumb__item::before{
  content:"/";
  color:rgba(169,155,199,.45);
}
.sg-breadcrumb__link{
  color:var(--sg-blueprint);
  border-bottom:1px solid transparent;
  transition:color .16s var(--sg-ease),border-color .16s var(--sg-ease);
}
.sg-breadcrumb__link:hover{
  color:var(--sg-cyan);
  border-bottom-color:var(--sg-cyan);
}
.sg-breadcrumb [aria-current="page"]{color:var(--sg-mist)}

/* ---------- 7 标签 / 展签 / 面板 ---------- */
.sg-tag{
  display:inline-flex;
  align-items:center;
  gap:.45em;
  padding:.3em .7em;
  font-family:var(--sg-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.12em;
  text-transform:uppercase;
  line-height:1.5;
  color:var(--sg-cyan);
  background:rgba(0,229,255,.08);
  border:1px solid currentColor;
  border-radius:2px;
}
.sg-tag--violet{color:#b79bff;background:rgba(108,43,255,.16)}
.sg-tag--orange{color:var(--sg-orange);background:rgba(255,107,26,.12)}
.sg-tag--mint{color:var(--sg-mint);background:rgba(124,255,178,.1)}
.sg-tag--paper{color:var(--sg-ink);background:var(--sg-paper);border-color:var(--sg-ink)}

.sg-plate{
  position:relative;
  padding:18px 20px;
  color:var(--sg-ink);
  background:var(--sg-paper);
  border:1px solid var(--sg-ink);
}
.sg-plate__index{
  display:block;
  margin-bottom:8px;
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(37,26,20,.6);
}
.sg-plate p{color:var(--sg-ink);line-height:1.75}

.sg-panel{
  position:relative;
  padding:22px;
  background:linear-gradient(165deg,rgba(22,16,42,.96),rgba(10,8,20,.98));
  border:1px solid var(--sg-line);
  box-shadow:var(--sg-shadow);
}
.sg-panel--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 26px),calc(100% - 26px) 100%,0 100%);
}
.sg-panel__label{
  display:block;
  margin-bottom:14px;
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--sg-cyan);
}

.sg-dot{
  display:inline-block;
  width:7px;height:7px;
  border-radius:50%;
  background:var(--sg-mint);
  animation:sg-pulse 1.8s ease-in-out infinite;
}

/* ---------- 8 媒体容器 ---------- */
.sg-media{
  position:relative;
  overflow:hidden;
  background:
    radial-gradient(circle at 78% 12%,rgba(108,43,255,.35),transparent 58%),
    linear-gradient(160deg,#151029 0%,#0a0813 62%);
  border:1px solid var(--sg-line);
}
.sg-media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(169,155,199,.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(169,155,199,.06) 1px,transparent 1px);
  background-size:48px 48px;
}
.sg-media__img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.92) contrast(1.05);
}
.sg-media--16x9{aspect-ratio:16/9}
.sg-media--tall{aspect-ratio:3/4}
.sg-media--cut{
  clip-path:polygon(0 0,100% 0,100% calc(100% - 34px),calc(100% - 34px) 100%,0 100%);
}
.sg-media__caption{
  position:absolute;
  z-index:2;
  left:0;
  bottom:0;
  padding:9px 15px;
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sg-ink);
  background:var(--sg-paper);
  border-top:1px solid var(--sg-ink);
  border-right:1px solid var(--sg-ink);
}
.sg-media__scan{
  position:absolute;
  z-index:2;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,transparent 0%,rgba(0,229,255,.18) 50%,transparent 100%);
  animation:sg-scan 6s linear infinite;
  mix-blend-mode:screen;
}

/* ---------- 9 头部 ---------- */
.sg-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:90;
  background:linear-gradient(180deg,rgba(7,7,13,.92) 0%,rgba(7,7,13,.58) 58%,rgba(7,7,13,0) 100%);
  border-bottom:1px solid transparent;
  transition:background-color .26s var(--sg-ease),border-color .26s var(--sg-ease),box-shadow .26s var(--sg-ease);
}
.sg-header[data-scrolled]{
  background:rgba(14,11,26,.97);
  border-bottom-color:var(--sg-line-cyan);
  box-shadow:0 22px 46px -34px rgba(0,0,0,1);
  -webkit-backdrop-filter:blur(8px);
  backdrop-filter:blur(8px);
}

.sg-status-strip{
  background:rgba(14,11,26,.62);
  border-bottom:1px solid var(--sg-line-soft);
}
.sg-status-strip__inner{
  display:flex;
  align-items:center;
  gap:20px;
  min-height:32px;
  max-width:var(--sg-max);
  margin:0 auto;
  padding:0 var(--sg-gutter);
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--sg-blueprint);
}
.sg-status-strip__item{
  display:inline-flex;
  align-items:center;
  gap:8px;
  white-space:nowrap;
  line-height:1.5;
}
.sg-status-strip__item--live{color:var(--sg-mint)}
.sg-status-strip__meta{
  margin-left:auto;
  white-space:nowrap;
  color:rgba(169,155,199,.72);
  line-height:1.5;
}

.sg-header__inner{
  display:flex;
  align-items:center;
  gap:24px;
  max-width:var(--sg-max);
  margin:0 auto;
  padding:14px var(--sg-gutter);
}

.sg-brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  flex:0 0 auto;
}
.sg-brand__mark{
  display:grid;
  place-items:center;
  width:44px;height:44px;
  font-family:var(--sg-mono);
  font-size:16px;
  font-weight:700;
  letter-spacing:-.02em;
  color:var(--sg-night);
  background:linear-gradient(150deg,var(--sg-cyan),#6ff5ff);
  clip-path:polygon(0 0,100% 0,100% 68%,68% 100%,0 100%);
}
.sg-brand__text{display:grid;gap:2px}
.sg-brand__name{
  display:block;
  font-size:17px;
  font-weight:800;
  letter-spacing:.02em;
  line-height:1.2;
  color:#fff;
}
.sg-brand__latin{
  display:block;
  font-family:var(--sg-mono);
  font-size:10px;
  letter-spacing:.28em;
  line-height:1.2;
  color:var(--sg-cyan);
}

.sg-nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  margin-left:auto;
  padding:9px 14px;
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--sg-cyan);
  background:rgba(0,229,255,.07);
  border:1px solid var(--sg-line-cyan);
  border-radius:2px;
  transition:background-color .18s var(--sg-ease),color .18s var(--sg-ease);
}
.sg-nav-toggle:hover{background:rgba(0,229,255,.16);color:#fff}
.sg-nav-toggle__bars{display:grid;gap:4px;width:18px}
.sg-nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--sg-ease),opacity .2s var(--sg-ease);
}
.sg-nav-toggle__label{line-height:1.4}
.sg-header[data-open] .sg-nav-toggle__bars span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.sg-header[data-open] .sg-nav-toggle__bars span:nth-child(2){opacity:0}
.sg-header[data-open] .sg-nav-toggle__bars span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.sg-nav{
  display:flex;
  align-items:center;
  gap:28px;
  margin-left:auto;
}
.sg-nav__list{
  display:flex;
  align-items:center;
  gap:22px;
}
.sg-nav__item{display:block}
.sg-nav__link{
  position:relative;
  display:inline-block;
  padding:8px 2px;
  font-size:14px;
  font-weight:500;
  letter-spacing:.02em;
  line-height:1.4;
  white-space:nowrap;
  color:rgba(245,241,255,.78);
  transition:color .18s var(--sg-ease);
}
.sg-nav__link::after{
  content:"";
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  background:linear-gradient(90deg,var(--sg-cyan),var(--sg-violet));
  transform:scaleX(0);
  transform-origin:0 50%;
  transition:transform .2s var(--sg-ease);
}
.sg-nav__link:hover{color:#fff}
.sg-nav__link:hover::after{transform:scaleX(1)}
.sg-nav__link[aria-current="page"]{color:var(--sg-cyan)}
.sg-nav__link[aria-current="page"]::after{transform:scaleX(1)}

.sg-nav__actions{
  display:flex;
  align-items:center;
  gap:10px;
}

.sg-progress{
  position:absolute;
  left:0;right:0;bottom:0;
  height:2px;
  pointer-events:none;
  background:linear-gradient(90deg,var(--sg-violet),var(--sg-cyan));
  transform:scaleX(var(--sg-progress,0));
  transform-origin:0 50%;
  transition:transform .12s linear;
}

/* ---------- 10 页脚 ---------- */
.sg-footer{
  position:relative;
  margin-top:110px;
  padding:72px 0 28px;
  overflow:hidden;
  background:
    radial-gradient(circle at 88% 0%,rgba(108,43,255,.3),transparent 56%),
    linear-gradient(180deg,var(--sg-deep) 0%,#08060F 62%,var(--sg-night) 100%);
  border-top:1px solid var(--sg-line-cyan);
  color:var(--sg-mist);
}
.sg-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(rgba(169,155,199,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(169,155,199,.055) 1px,transparent 1px);
  background-size:64px 64px;
}
.sg-footer__inner{position:relative;z-index:1}

.sg-footer__top{
  display:grid;
  grid-template-columns:minmax(260px,1fr) 2fr;
  gap:56px;
  align-items:start;
}
.sg-footer__brand{min-width:0}
.sg-brand--footer .sg-brand__mark{width:40px;height:40px;font-size:15px}
.sg-footer__tagline{
  margin-top:20px;
  font-size:clamp(1.5rem,2.7vw,2.35rem);
  font-weight:900;
  line-height:1.14;
  letter-spacing:-.025em;
  color:#fff;
  transform:skewX(-6deg);
  transform-origin:left top;
}
.sg-footer__note{
  margin-top:16px;
  max-width:34ch;
  font-size:.85rem;
  line-height:1.8;
  color:rgba(245,241,255,.58);
}

.sg-footer__cols{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:32px;
}
.sg-footer__col{min-width:0}
.sg-footer__heading{
  margin-bottom:16px;
  font-family:var(--sg-mono);
  font-size:11px;
  font-weight:500;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--sg-cyan);
  line-height:1.5;
}
.sg-footer__list{display:grid;gap:10px}
.sg-footer__link{
  display:inline-block;
  font-size:.9rem;
  line-height:1.7;
  color:rgba(245,241,255,.72);
  transition:color .16s var(--sg-ease),padding-left .16s var(--sg-ease);
}
.sg-footer__link:hover{
  color:var(--sg-cyan);
  padding-left:6px;
}

.sg-footer__contact{
  display:grid;
  grid-template-columns:1.15fr 1fr;
  gap:28px;
  align-items:center;
  margin-top:56px;
  padding:24px 26px;
  color:var(--sg-ink);
  background:var(--sg-paper);
  border:1px solid var(--sg-ink);
  clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%);
}
.sg-footer__contact-label{
  margin-bottom:10px;
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:rgba(37,26,20,.62);
  line-height:1.5;
}
.sg-footer__contact-line{
  font-size:.9rem;
  line-height:1.8;
  color:var(--sg-ink);
  word-break:break-word;
}
.sg-footer__contact-line strong{color:var(--sg-ink);font-weight:800}
.sg-footer__contact-actions{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  justify-content:flex-end;
  align-items:center;
}

.sg-footer__legal{
  display:flex;
  flex-wrap:wrap;
  gap:12px 28px;
  justify-content:space-between;
  align-items:center;
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid var(--sg-line);
  font-family:var(--sg-mono);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(169,155,199,.82);
}
.sg-footer__legal p{line-height:1.7}
.sg-footer__meta{display:flex;flex-wrap:wrap;gap:8px 22px}
.sg-footer__icp{color:rgba(169,155,199,.7)}

.sg-footer__ghost{
  position:absolute;
  right:-8px;
  bottom:-28px;
  z-index:0;
  font-family:var(--sg-mono);
  font-weight:700;
  font-size:clamp(3.4rem,13vw,10rem);
  line-height:1;
  letter-spacing:-.03em;
  color:rgba(169,155,199,.07);
  pointer-events:none;
  user-select:none;
}

/* ---------- 11 动效 ---------- */
.sg-js [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  transition:opacity .55s var(--sg-ease),transform .55s var(--sg-ease);
  transition-delay:var(--sg-delay,0ms);
}
.sg-js [data-reveal].is-visible{
  opacity:1;
  transform:none;
}
@keyframes sg-pulse{
  0%,100%{box-shadow:0 0 0 0 rgba(124,255,178,.55);opacity:1}
  50%{box-shadow:0 0 0 6px rgba(124,255,178,0);opacity:.7}
}
@keyframes sg-scan{
  0%{transform:translateY(-100%)}
  100%{transform:translateY(100%)}
}

/* ---------- 12 响应式 ---------- */
@media (max-width:1180px){
  .sg-nav__list{gap:14px}
  .sg-nav__link{font-size:13px}
  .sg-nav__actions{gap:8px}
}
@media (max-width:1100px){
  .sg-nav__actions .sg-btn--ghost{display:none}
}
@media (max-width:980px){
  :root{--sg-header-h:96px;--sg-gutter:24px}

  .sg-status-strip__inner{gap:12px;font-size:10px;letter-spacing:.1em}
  .sg-status-strip__meta{display:none}
  .sg-header__inner{padding:12px var(--sg-gutter);gap:14px}
  .sg-nav-toggle{display:inline-flex}
  .sg-brand__mark{width:38px;height:38px;font-size:14px}
  .sg-brand__name{font-size:15px}
  .sg-brand__latin{font-size:9px;letter-spacing:.24em}

  .sg-nav{
    position:absolute;
    left:0;right:0;top:100%;
    z-index:95;
    display:flex;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:8px var(--sg-gutter) 24px;
    max-height:calc(100vh - 96px);
    overflow-y:auto;
    background:rgba(9,7,18,.985);
    border-top:1px solid var(--sg-line-cyan);
    box-shadow:0 30px 60px -30px rgba(0,0,0,1);
    opacity:0;
    visibility:hidden;
    transform:translateY(-10px);
    transition:opacity .2s var(--sg-ease),transform .2s var(--sg-ease),visibility .2s linear;
  }
  .sg-header[data-open] .sg-nav{
    opacity:1;
    visibility:visible;
    transform:translateY(0);
  }
  .sg-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .sg-nav__item{border-bottom:1px solid var(--sg-line-soft)}
  .sg-nav__link{
    display:block;
    padding:14px 4px;
    font-size:15px;
  }
  .sg-nav__link::after{display:none}
  .sg-nav__link[aria-current="page"]{
    color:var(--sg-cyan);
    box-shadow:inset 3px 0 0 var(--sg-cyan);
    padding-left:14px;
  }
  .sg-nav__actions{
    display:grid;
    gap:10px;
    padding-top:18px;
  }
  .sg-nav__actions .sg-btn{width:100%}
  .sg-nav__actions .sg-btn--ghost{display:inline-flex}

  .sg-section{padding:64px 0}
  .sg-section--tight{padding:40px 0}
  .sg-display{max-width:12ch}

  .sg-footer{margin-top:72px;padding:56px 0 24px}
  .sg-footer__top{grid-template-columns:1fr;gap:40px}
  .sg-footer__contact{grid-template-columns:1fr;gap:18px;padding:22px}
  .sg-footer__contact-actions{justify-content:flex-start}
  .sg-footer__legal{flex-direction:column;align-items:flex-start;gap:10px}
}
@media (max-width:900px){
  .sg-grid{grid-template-columns:repeat(6,minmax(0,1fr))}
  .sg-footer__cols{gap:24px}
}
@media (max-width:640px){
  :root{--sg-gutter:18px}
  .sg-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
  .sg-footer__cols{grid-template-columns:1fr;gap:28px}
  .sg-footer__tagline{font-size:1.6rem}
  .sg-footer__contact-actions .sg-btn{width:100%}
  .sg-prose{font-size:.95rem;line-height:1.85}
  .sg-btn{padding:.75em 1.15em;font-size:.83rem}
  .sg-btn--sm{padding:.55em .9em;font-size:.76rem}
}
@media (max-width:420px){
  .sg-status-strip__item:nth-of-type(3){display:none}
}

/* ---------- 13 减弱动效 ---------- */
@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;
  }
  .sg-js [data-reveal]{opacity:1;transform:none}
  .sg-dot{animation:none;box-shadow:none}
  .sg-media__scan{display:none}
  .sg-progress{transition:none}
  .sg-btn:hover{transform:none}
}