/* roulang page: index */
:root{
  --bg-0:#070D18;
  --bg-1:#0B1524;
  --surface:rgba(16,30,48,0.72);
  --surface-solid:#0F1E31;
  --line:rgba(120,190,230,0.14);
  --line-strong:rgba(25,200,216,0.45);
  --primary:#19C8D8;
  --primary-deep:#0E7C8C;
  --secondary:#6E8CFF;
  --accent:#F5A524;
  --text-1:#E9F2FB;
  --text-2:#A8BCCF;
  --text-3:#6E8399;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,0.45);
  --glow:0 0 0 1px rgba(25,200,216,0.5),0 10px 28px rgba(25,200,216,0.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:#070D18;
  --bs-body-color:#E9F2FB;
  --bs-border-radius:16px;
  --bs-primary:#19C8D8;
  --bs-link-color:#6E8CFF;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease),border-color .22s var(--ease),background-color .22s var(--ease);}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-0.01em;}
p{margin:0;}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}

/* ---------- 顶部信息条 ---------- */
.xg-topbar{
  height:36px;display:flex;align-items:center;
  background:linear-gradient(90deg,rgba(25,200,216,0.16),rgba(110,140,255,0.12));
  border-bottom:1px solid var(--line);
  font-size:13px;color:var(--text-2);
}
.xg-topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.xg-topbar__inner span{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.xg-topbar__close{
  width:24px;height:24px;border-radius:50%;border:1px solid var(--line);
  color:var(--text-3);font-size:14px;line-height:1;display:grid;place-items:center;flex:0 0 auto;
}
.xg-topbar__close:hover{color:var(--text-1);border-color:var(--line-strong);}

/* ---------- 导航 ---------- */
.xg-header{
  position:sticky;top:0;z-index:900;
  background:rgba(7,13,24,0.72);
  border-bottom:1px solid transparent;
  transition:background-color .24s ease,border-color .24s ease,backdrop-filter .24s ease;
}
.xg-header.is-stuck{
  background:rgba(7,13,24,0.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.xg-header__inner{display:flex;align-items:center;gap:20px;min-height:72px;}
.xg-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
.xg-logo__mark{
  width:34px;height:34px;border-radius:10px;
  background:linear-gradient(135deg,rgba(25,200,216,0.24),rgba(110,140,255,0.18));
  border:1px solid var(--line-strong);
  display:grid;place-items:center;
}
.xg-logo__mark svg{width:20px;height:20px;}
.xg-logo__text{font-size:17px;font-weight:700;letter-spacing:-0.01em;color:var(--text-1);}
.xg-nav{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;}
.xg-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;font-weight:500;white-space:nowrap;
  transition:all .22s var(--ease);position:relative;
}
.xg-chip:hover{color:var(--text-1);border-color:var(--line-strong);}
.xg-chip.is-active{
  color:var(--text-1);border-color:var(--line-strong);
  background:rgba(25,200,216,0.10);
  box-shadow:0 0 0 1px rgba(25,200,216,0.18) inset;
}
.xg-chip.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,var(--primary),rgba(25,200,216,0));
}
.xg-header__cta{flex:0 0 auto;}
.xg-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);flex:0 0 auto;place-items:center;
}
.xg-burger span{display:block;width:18px;height:2px;background:var(--text-1);border-radius:2px;position:relative;}
.xg-burger span::before,.xg-burger span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;
}
.xg-burger span::before{top:-6px;}
.xg-burger span::after{top:6px;}

.xg-drawer{
  display:none;position:fixed;inset:0;z-index:950;
}
.xg-drawer.is-open{display:block;}
.xg-drawer__mask{position:absolute;inset:0;background:rgba(4,8,16,0.7);}
.xg-drawer__panel{
  position:absolute;right:0;top:0;height:100%;width:min(320px,86vw);
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:22px 20px;display:flex;flex-direction:column;gap:10px;overflow-y:auto;
}
.xg-drawer__title{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin-bottom:6px;}
.xg-drawer__link{
  display:flex;align-items:center;min-height:44px;padding:0 12px;border-radius:12px;
  color:var(--text-2);font-size:15px;border-left:3px solid transparent;
}
.xg-drawer__link:hover{background:rgba(25,200,216,0.08);color:var(--text-1);}
.xg-drawer__link.is-active{border-left-color:var(--primary);color:var(--text-1);background:rgba(25,200,216,0.08);}
.xg-drawer__close{
  position:absolute;right:16px;top:16px;width:36px;height:36px;border-radius:50%;
  border:1px solid var(--line);display:grid;place-items:center;color:var(--text-2);
}

/* ---------- 按钮 ---------- */
.xg-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:all .24s var(--ease);white-space:nowrap;
}
.xg-btn--glow{
  background:linear-gradient(135deg,#19C8D8 0%,#21D3B4 100%);
  color:#04141A;box-shadow:var(--glow);
}
.xg-btn--glow:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,200,216,0.55),0 12px 32px rgba(25,200,216,0.34);}
.xg-btn--glow:active{background:linear-gradient(135deg,#0E7C8C,#128f7c);filter:none;transform:translateY(0);}
.xg-btn--ghost{
  background:transparent;border:1px solid var(--line-strong);color:var(--text-1);
}
.xg-btn--ghost:hover{background:rgba(25,200,216,0.08);transform:translateY(-1px);}
.xg-btn--sm{height:40px;padding:0 18px;font-size:14px;}
.xg-btn[disabled]{opacity:.45;box-shadow:none;pointer-events:none;}

/* ---------- 通用板块 ---------- */
.xg-section{padding:96px 0;}
.xg-section--tight{padding:72px 0;}
.xg-section--alt{background:var(--bg-1);}
.xg-section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;}
.xg-section__title{font-size:clamp(22px,2.6vw,30px);line-height:1.3;font-weight:700;}
.xg-section__desc{margin-top:10px;color:var(--text-2);font-size:15px;max-width:640px;}
.xg-more{color:var(--secondary);font-size:14px;font-weight:600;display:inline-flex;align-items:center;gap:6px;}
.xg-more:hover{color:var(--primary);}
.xg-kicker{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(25,200,216,0.10);border:1px solid var(--line-strong);
  color:var(--primary);font-size:12px;font-weight:600;letter-spacing:.06em;margin-bottom:16px;
}

/* ---------- Hero ---------- */
.xg-hero{
  position:relative;
  min-height:560px;
  display:flex;align-items:center;
  background-image:linear-gradient(180deg,rgba(7,13,24,0.42) 0%,rgba(7,13,24,0.92) 88%),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.xg-hero::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgba(120,190,230,0.05) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,230,0.05) 1px,transparent 1px);
  background-size:56px 56px;
  mask-image:linear-gradient(180deg,rgba(0,0,0,0.7),transparent 80%);
  -webkit-mask-image:linear-gradient(180deg,rgba(0,0,0,0.7),transparent 80%);
}
.xg-hero__grid{
  position:relative;z-index:2;
  display:grid;grid-template-columns:1.12fr .88fr;gap:48px;align-items:center;
  padding:88px 0 72px;
}
.xg-hero h1{
  font-size:clamp(28px,4vw,46px);line-height:1.25;letter-spacing:-0.02em;font-weight:700;
}
.xg-hero__sub{margin-top:18px;color:var(--text-2);font-size:17px;max-width:560px;}
.xg-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.xg-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 12px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);
  font-size:12px;font-weight:500;
}
.xg-badge--cat{color:var(--secondary);border-color:rgba(110,140,255,0.32);}
.xg-badge--accent{color:var(--accent);border-color:rgba(245,165,36,0.32);}
.xg-hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.xg-hero__card{
  background:var(--surface);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--line-strong);border-radius:18px;padding:16px;
  box-shadow:var(--shadow-card);
}
.xg-hero__media{border-radius:var(--r-img);overflow:hidden;aspect-ratio:16/9;background:var(--bg-1);border:1px solid var(--line);}
.xg-hero__media img{width:100%;height:100%;object-fit:cover;}
.xg-hero__caption{padding:16px 6px 6px;display:flex;align-items:center;justify-content:space-between;gap:12px;}
.xg-hero__caption strong{font-size:15px;font-weight:600;}
.xg-hero__caption span{font-size:13px;color:var(--text-3);}
.xg-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;padding:14px 6px 6px;border-top:1px solid var(--line);margin-top:12px;}
.xg-stats div{text-align:left;}
.xg-stats b{display:block;font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:20px;font-weight:700;color:var(--accent);letter-spacing:-0.01em;}
.xg-stats span{display:block;font-size:13px;color:var(--text-3);margin-top:2px;}

/* ---------- 锚点 chip 条 ---------- */
.xg-anchorbar{
  position:sticky;top:72px;z-index:700;
  background:rgba(11,21,36,0.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
}
.xg-anchorbar__inner{display:flex;align-items:center;gap:8px;min-height:58px;overflow-x:auto;scrollbar-width:none;}
.xg-anchorbar__inner::-webkit-scrollbar{display:none;}
.xg-anchorbar__label{font-size:13px;color:var(--text-3);white-space:nowrap;margin-right:6px;}

/* ---------- 专题合集主区 ---------- */
.xg-topics{display:grid;grid-template-columns:1.22fr .78fr;gap:0;align-items:center;}
.xg-topics__media{position:relative;border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);aspect-ratio:16/10;background:var(--bg-1);}
.xg-topics__media img{width:100%;height:100%;object-fit:cover;transition:transform .5s var(--ease);}
.xg-topics__media:hover img{transform:scale(1.03);}
.xg-topics__body{
  position:relative;z-index:2;margin-left:-72px;
  background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);
  padding:32px;box-shadow:var(--shadow-card);
}
.xg-topics__body h3{font-size:22px;line-height:1.35;margin-bottom:12px;}
.xg-topics__body p{color:var(--text-2);font-size:15px;}
.xg-topics__body .xg-btn{margin-top:22px;}

/* ---------- 合集目录 ---------- */
.xg-catalog{display:grid;grid-template-columns:repeat(2,1fr);gap:0 40px;}
.xg-catalog__row{
  display:grid;grid-template-columns:56px 1fr auto;gap:16px;align-items:center;
  min-height:64px;padding:10px 16px;border-bottom:1px solid var(--line);
  border-radius:10px;transition:background-color .22s var(--ease),border-color .22s var(--ease);
}
.xg-catalog__row:hover{background:rgba(25,200,216,0.06);border-bottom-color:var(--line-strong);}
.xg-catalog__no{font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:15px;font-weight:700;color:var(--accent);letter-spacing:.04em;}
.xg-catalog__t{font-size:16px;font-weight:600;}
.xg-catalog__d{font-size:13px;color:var(--text-3);margin-top:2px;}
.xg-catalog__arrow{color:var(--text-3);opacity:0;transform:translateX(-6px);transition:all .22s var(--ease);}
.xg-catalog__row:hover .xg-catalog__arrow{opacity:1;transform:translateX(0);color:var(--primary);}

/* ---------- 卡片 ---------- */
.xg-card{
  position:relative;background:var(--surface-solid);border:1px solid var(--line);
  border-radius:var(--r-card);overflow:hidden;height:100%;
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.xg-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;
  background:linear-gradient(90deg,rgba(25,200,216,0.7),rgba(25,200,216,0));
  opacity:0;transition:opacity .32s var(--ease);
}
.xg-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 24px rgba(25,200,216,0.18);}
.xg-card:hover::before{opacity:1;}
.xg-card__media{aspect-ratio:16/10;overflow:hidden;background:var(--bg-1);border-bottom:1px solid var(--line);}
.xg-card__media img{width:100%;height:100%;object-fit:cover;transition:transform .45s var(--ease);}
.xg-card:hover .xg-card__media img{transform:scale(1.04);}
.xg-card__body{padding:20px 22px 22px;}
.xg-card__meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-bottom:12px;}
.xg-card__title{font-size:17px;line-height:1.45;font-weight:600;}
.xg-card__title a:hover{color:var(--primary);}
.xg-card__text{margin-top:10px;font-size:14px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;}
.xg-card__foot{margin-top:16px;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--text-3);}
.xg-card__link{color:var(--secondary);font-weight:600;}
.xg-card__link:hover{color:var(--primary);}

.xg-featured{display:grid;grid-template-columns:repeat(2,1fr);gap:24px;}
.xg-featured__wide{grid-column:span 2;display:grid;grid-template-columns:1.05fr .95fr;}
.xg-featured__wide .xg-card__media{aspect-ratio:auto;height:100%;min-height:280px;border-bottom:0;border-right:1px solid var(--line);}
.xg-featured__wide .xg-card__body{display:flex;flex-direction:column;justify-content:center;padding:32px;}
.xg-featured__wide .xg-card__title{font-size:22px;}
.xg-featured__wide .xg-card__text{-webkit-line-clamp:4;font-size:15px;}

/* ---------- 分类入口卡 ---------- */
.xg-cats{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.xg-cats .xg-card__media{aspect-ratio:4/3;}
.xg-cats .xg-card__title{font-size:16px;}

/* ---------- 最新信息 ---------- */
.xg-news{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.xg-news .xg-card__body{padding:22px;}
.xg-news__bar{height:3px;border-radius:3px 3px 0 0;background:linear-gradient(90deg,var(--primary),var(--secondary));}
.xg-empty{
  grid-column:1/-1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;
  min-height:260px;text-align:center;background:var(--bg-1);border:1px dashed var(--line);
  border-radius:var(--r-card);padding:32px;
}
.xg-empty svg{width:48px;height:48px;stroke:var(--text-3);}
.xg-empty p{color:var(--text-2);font-size:15px;}

/* ---------- 数据区 ---------- */
.xg-metrics{display:grid;grid-template-columns:repeat(4,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.xg-metrics__item{padding:32px 26px;border-left:1px solid var(--line);}
.xg-metrics__item:first-child{border-left:0;}
.xg-metrics__no{font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:13px;color:var(--accent);letter-spacing:.1em;}
.xg-metrics__item h3{font-size:18px;margin-top:12px;}
.xg-metrics__item p{margin-top:8px;font-size:14px;color:var(--text-2);}

/* ---------- FAQ ---------- */
.xg-acc{display:grid;gap:12px;max-width:900px;margin:0 auto;}
.xg-acc__item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;
  transition:border-color .26s var(--ease),background-color .26s var(--ease);
}
.xg-acc__item.is-open{border-color:var(--line-strong);background:rgba(16,30,48,0.9);}
.xg-acc__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;text-align:left;position:relative;
}
.xg-acc__q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;border-radius:2px;
  background:var(--primary);opacity:0;transition:opacity .26s var(--ease);
}
.xg-acc__item.is-open .xg-acc__q::before{opacity:1;}
.xg-acc__icon{
  flex:0 0 auto;width:22px;height:22px;position:relative;transition:transform .26s var(--ease);
}
.xg-acc__icon::before,.xg-acc__icon::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--text-2);border-radius:2px;transform:translate(-50%,-50%);
}
.xg-acc__icon::before{width:12px;height:2px;}
.xg-acc__icon::after{width:2px;height:12px;transition:opacity .26s var(--ease);}
.xg-acc__item.is-open .xg-acc__icon{transform:rotate(180deg);}
.xg-acc__item.is-open .xg-acc__icon::after{opacity:0;}
.xg-acc__a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.xg-acc__a p{padding:0 22px 20px;color:var(--text-2);font-size:14px;line-height:1.8;}

/* ---------- CTA 横幅 ---------- */
.xg-cta{
  background:var(--surface);border:1px solid var(--line-strong);border-radius:20px;
  padding:36px 38px;display:flex;align-items:center;justify-content:space-between;gap:28px;
  box-shadow:var(--shadow-card);
}
.xg-cta h2{font-size:clamp(20px,2.4vw,26px);}
.xg-cta p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:560px;}
.xg-cta__actions{display:flex;gap:14px;flex-wrap:wrap;flex:0 0 auto;}
.xg-toast{
  margin-top:14px;font-size:13px;color:var(--primary);min-height:20px;
}

/* ---------- 页脚 ---------- */
.xg-footer{
  position:relative;background:var(--bg-1);border-top:1px solid var(--line);
  padding:64px 0 0;margin-top:96px;
}
.xg-footer::before{
  content:"";position:absolute;left:0;right:0;top:-1px;height:1px;
  background:linear-gradient(90deg,rgba(25,200,216,0),rgba(25,200,216,0.6),rgba(25,200,216,0));
}
.xg-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
.xg-footer h4{font-size:15px;margin-bottom:18px;color:var(--text-1);}
.xg-footer__desc{margin-top:16px;color:var(--text-2);font-size:14px;max-width:320px;}
.xg-footer__links{display:grid;gap:12px;}
.xg-footer__links a{color:var(--text-2);font-size:14px;display:inline-block;}
.xg-footer__links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:2px;}
.xg-footer__info{color:var(--text-2);font-size:14px;display:grid;gap:10px;}
.xg-footer__info span{color:var(--text-3);font-size:13px;}
.xg-footer__bottom{
  margin-top:52px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:20px 0;font-size:13px;color:var(--text-3);
}
.xg-totop{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);
  display:grid;place-items:center;color:var(--text-2);background:transparent;
}
.xg-totop:hover{color:var(--primary);background:rgba(25,200,216,0.08);}

/* ---------- 响应式 ---------- */
@media (max-width:1199px){
  .xg-nav{gap:6px;}
  .xg-chip{padding:0 13px;font-size:13px;}
  .xg-cats{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991px){
  .container{padding:0 16px;}
  .xg-nav{display:none;}
  .xg-burger{display:grid;}
  .xg-header__inner{min-height:64px;gap:12px;}
  .xg-header__cta{height:40px;padding:0 16px;font-size:14px;margin-left:auto;}
  .xg-hero__grid{grid-template-columns:1fr;gap:32px;padding:64px 0 56px;}
  .xg-hero{min-height:auto;}
  .xg-anchorbar{top:64px;}
  .xg-section{padding:64px 0;}
  .xg-topics{grid-template-columns:1fr;}
  .xg-topics__body{margin-left:0;margin-top:-40px;width:calc(100% - 32px);margin-right:auto;padding:26px;}
  .xg-catalog{grid-template-columns:1fr;}
  .xg-news{grid-template-columns:repeat(2,1fr);}
  .xg-featured__wide{grid-template-columns:1fr;}
  .xg-featured__wide .xg-card__media{min-height:220px;border-right:0;border-bottom:1px solid var(--line);}
  .xg-metrics{grid-template-columns:repeat(2,1fr);}
  .xg-metrics__item:nth-child(odd){border-left:0;}
  .xg-cta{flex-direction:column;align-items:flex-start;}
  .xg-footer__grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:575px){
  .xg-section{padding:52px 0;}
  .xg-hero h1{font-size:27px;}
  .xg-hero__sub{font-size:15px;}
  .xg-news,.xg-cats,.xg-featured{grid-template-columns:1fr;}
  .xg-featured__wide{grid-column:span 1;}
  .xg-metrics{grid-template-columns:1fr;}
  .xg-metrics__item{border-left:0;border-top:1px solid var(--line);}
  .xg-metrics__item:first-child{border-top:0;}
  .xg-card:hover{transform:none;}
  .xg-card:hover .xg-card__media img{transform:none;}
  .xg-catalog__row{grid-template-columns:44px 1fr auto;padding:12px 10px;}
  .xg-cta{padding:26px 22px;}
  .xg-footer__grid{grid-template-columns:1fr;}
  .xg-footer__bottom{flex-direction:column;align-items:flex-start;}
  .xg-btn{width:100%;}
  .xg-hero__actions,.xg-cta__actions{width:100%;}
  .xg-header__cta{width:auto;}
}

/* roulang page: article */
:root{
  --bg-0:#070D18;
  --bg-1:#0B1524;
  --surface:rgba(16,30,48,.72);
  --surface-solid:#0F1E31;
  --line:rgba(120,190,230,.14);
  --line-strong:rgba(25,200,216,.45);
  --primary:#19C8D8;
  --primary-deep:#0E7C8C;
  --secondary:#6E8CFF;
  --accent:#F5A524;
  --text-1:#E9F2FB;
  --text-2:#A8BCCF;
  --text-3:#6E8399;
  --r-card:16px;
  --r-btn:12px;
  --r-img:14px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(25,200,216,.5),0 10px 28px rgba(25,200,216,.26);
  --wrap:1200px;
  --bs-body-bg:#070D18;
  --bs-body-color:#E9F2FB;
  --bs-primary:#19C8D8;
  --bs-border-radius:14px;
  --bs-link-color:#6E8CFF;
  --bs-link-hover-color:#19C8D8;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.xg-lock{overflow:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .2s ease,border-color .2s ease,background-color .2s ease}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 24px}
@media (max-width:991px){.container{padding:0 16px}}
.xg-num{font-family:"Inter","DIN Alternate",system-ui,monospace;letter-spacing:.02em}

/* ============ 导航 ============ */
.xg-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,13,24,.7);
  border-bottom:1px solid var(--line);
  transition:background .24s ease,backdrop-filter .24s ease;
}
.xg-header.is-scrolled{background:rgba(7,13,24,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px)}
.xg-header__inner{display:flex;align-items:center;gap:18px;min-height:68px}
.xg-logo{display:inline-flex;align-items:center;gap:10px;flex:none}
.xg-logo__mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(140deg,rgba(25,200,216,.18),rgba(110,140,255,.12));
  border:1px solid var(--line-strong);
}
.xg-logo__mark svg{width:22px;height:22px}
.xg-logo__text{font-size:17px;font-weight:600;letter-spacing:.01em;white-space:nowrap}
.xg-nav{display:flex;align-items:center;gap:8px;margin-left:8px;flex:1;min-width:0;overflow-x:auto;scrollbar-width:none}
.xg-nav::-webkit-scrollbar{display:none}
.xg-chip{
  display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);color:var(--text-2);
  font-size:14px;font-weight:500;white-space:nowrap;position:relative;
  transition:color .2s ease,border-color .2s ease,background-color .2s ease;
}
.xg-chip:hover{color:var(--text-1);border-color:var(--line-strong)}
.xg-chip.is-active{color:#E9F2FB;border-color:var(--line-strong);background:rgba(16,30,48,.86)}
.xg-chip.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(25,200,216,0),var(--primary),rgba(25,200,216,0));
}
.xg-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .2s ease,box-shadow .24s ease,background-color .2s ease,color .2s ease,border-color .2s ease;
}
.xg-btn--glow{
  background:linear-gradient(135deg,#19C8D8,#39E0C6);
  color:#04141A;box-shadow:var(--glow);
}
.xg-btn--glow:hover{transform:translateY(-1px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(25,200,216,.55),0 12px 32px rgba(25,200,216,.32)}
.xg-btn--glow:active{background:var(--primary-deep);color:#EAFDFF;transform:translateY(0)}
.xg-btn--ghost{
  background:transparent;border:1px solid var(--line-strong);color:var(--text-1);
}
.xg-btn--ghost:hover{background:rgba(25,200,216,.08);border-color:var(--primary)}
.xg-btn--ghost:active{transform:translateY(0);background:rgba(25,200,216,.14)}
.xg-btn[disabled],.xg-btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none}
.xg-header__cta{flex:none}
.xg-burger{
  display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);
  background:var(--surface);position:relative;flex:none;
}
.xg-burger span,.xg-burger span::before,.xg-burger span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text-1);border-radius:2px;
  transform:translateX(-50%);transition:transform .24s ease,opacity .2s ease;
}
.xg-burger span{top:50%;margin-top:-1px}
.xg-burger span::before{content:"";left:0;top:-6px;transform:none}
.xg-burger span::after{content:"";left:0;top:6px;transform:none}
.xg-burger.is-open span{background:transparent}
.xg-burger.is-open span::before{top:0;transform:rotate(45deg)}
.xg-burger.is-open span::after{top:0;transform:rotate(-45deg)}
@media (max-width:991px){
  .xg-header__cta{display:none}
  .xg-burger{display:block;margin-left:auto}
  .xg-nav{
    position:fixed;left:0;right:0;top:68px;bottom:auto;max-height:calc(100vh - 68px);
    flex-direction:column;align-items:stretch;gap:6px;margin:0;padding:14px 16px 24px;
    background:rgba(7,13,24,.97);border-bottom:1px solid var(--line);
    overflow-y:auto;opacity:0;transform:translateY(-10px);pointer-events:none;
    transition:opacity .24s ease,transform .24s ease;
  }
  .xg-nav.is-open{opacity:1;transform:none;pointer-events:auto}
  .xg-nav .xg-chip{height:44px;width:100%;justify-content:flex-start;padding-left:14px}
  .xg-nav .xg-chip.is-active::before{
    content:"";position:absolute;left:0;top:10px;bottom:10px;width:3px;border-radius:2px;background:var(--primary);
  }
  .xg-nav .xg-chip.is-active::after{display:none}
}

/* ============ 通用组件 ============ */
.xg-card{
  background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;position:relative;overflow:hidden;
  transition:transform .32s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.xg-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;opacity:0;
  background:linear-gradient(90deg,rgba(25,200,216,0),rgba(25,200,216,.9),rgba(25,200,216,0));
  transition:opacity .24s ease;
}
.xg-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 24px rgba(25,200,216,.14)}
.xg-card:hover::before{opacity:1}
.xg-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:999px;
  background:rgba(16,30,48,.72);border:1px solid var(--line);
  font-size:12px;line-height:1;color:var(--text-2);white-space:nowrap;
}
.xg-badge--cat{color:var(--secondary)}
.xg-badge--accent{color:var(--accent)}
.xg-badges{display:flex;flex-wrap:wrap;gap:8px}
.xg-sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:32px}
.xg-sec-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;letter-spacing:-.01em}
.xg-sec-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:640px}
.xg-link-more{color:var(--secondary);font-size:14px;font-weight:500;white-space:nowrap}
.xg-link-more:hover{color:var(--primary)}

/* ============ 文章页顶部 ============ */
.xg-article-top{padding:26px 0 0}
.xg-crumbs{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:22px}
.xg-crumbs a:hover{color:var(--primary)}
.xg-crumbs__sep{color:rgba(110,131,153,.5)}
.xg-crumbs__current{max-width:56vw;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;color:var(--text-2)}
@media (max-width:575px){.xg-crumbs__current{max-width:44vw}}

.xg-art-head{
  background:linear-gradient(180deg,rgba(11,21,36,.9),rgba(7,13,24,.6));
  border:1px solid var(--line);border-radius:20px;padding:34px 34px 30px;position:relative;overflow:hidden;
}
.xg-art-head::after{
  content:"";position:absolute;right:-80px;top:-90px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,200,216,.16),rgba(25,200,216,0) 68%);
  pointer-events:none;
}
.xg-art-head__meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:16px}
.xg-art-head h1{
  font-size:clamp(26px,3.4vw,42px);line-height:1.28;font-weight:700;letter-spacing:-.02em;max-width:900px;
}
.xg-art-head__sub{color:var(--text-2);font-size:16px;line-height:1.8;margin-top:16px;max-width:820px}
.xg-art-head__foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:18px;
  margin-top:26px;padding-top:20px;border-top:1px solid var(--line);
}
.xg-art-meta{display:flex;flex-wrap:wrap;gap:20px;font-size:13px;color:var(--text-3)}
.xg-art-meta b{color:var(--text-2);font-weight:500}
.xg-share{display:flex;gap:10px}
.xg-share button{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  display:grid;place-items:center;color:var(--text-2);font-size:13px;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.xg-share button:hover{border-color:var(--line-strong);color:var(--text-1);background:rgba(25,200,216,.1)}
@media (max-width:575px){.xg-art-head{padding:24px 20px 22px;border-radius:16px}}

/* ============ 布局 ============ */
.xg-main{padding:44px 0 0}
.xg-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:40px;align-items:start}
@media (max-width:991px){.xg-layout{grid-template-columns:minmax(0,1fr);gap:32px}}

.xg-panel{
  background:var(--surface-solid);border:1px solid var(--line);border-radius:18px;padding:28px 30px;
}
@media (max-width:575px){.xg-panel{padding:20px 18px;border-radius:16px}}

/* 正文排版 */
.xg-prose{font-size:17px;line-height:1.85;color:var(--text-1);word-break:break-word}
.xg-prose>*:first-child{margin-top:0}
.xg-prose p{margin:0 0 1.4em}
.xg-prose h2{
  position:relative;font-size:clamp(20px,2.2vw,26px);line-height:1.35;margin:40px 0 16px;padding-left:14px;
}
.xg-prose h2::before{
  content:"";position:absolute;left:0;top:.18em;bottom:.18em;width:3px;border-radius:2px;background:var(--primary);
}
.xg-prose h3{font-size:19px;margin:28px 0 12px;color:var(--text-1)}
.xg-prose h4{font-size:17px;margin:22px 0 10px;color:var(--text-1)}
.xg-prose ul,.xg-prose ol{margin:0 0 1.4em;padding-left:1.35em}
.xg-prose li{margin-bottom:.5em;line-height:1.9}
.xg-prose li::marker{color:var(--primary)}
.xg-prose a{color:var(--secondary);border-bottom:1px solid rgba(110,140,255,.4)}
.xg-prose a:hover{color:var(--primary);border-color:var(--primary)}
.xg-prose strong{color:#fff;font-weight:600}
.xg-prose img{border-radius:var(--r-img);border:1px solid var(--line);margin:24px auto;max-width:100%;height:auto}
.xg-prose figure{margin:24px 0}
.xg-prose figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.xg-prose blockquote{
  margin:24px 0;padding:18px 20px;border-radius:14px;border-left:3px solid var(--secondary);
  background:var(--surface);color:var(--text-2);font-size:16px;
}
.xg-prose blockquote p:last-child{margin-bottom:0}
.xg-prose hr{border:0;border-top:1px solid var(--line);margin:34px 0}
.xg-prose table{width:100%;border-collapse:collapse;margin:24px 0;font-size:15px}
.xg-prose th,.xg-prose td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.xg-prose thead th{background:var(--bg-1);color:var(--text-1);font-weight:600}
.xg-prose tbody tr:nth-child(odd){background:var(--bg-1)}
.xg-prose tbody tr:nth-child(even){background:var(--surface)}
.xg-prose code{background:rgba(25,200,216,.1);border:1px solid var(--line);border-radius:6px;padding:1px 6px;font-size:14px;color:#8FF3FF}

.xg-empty{text-align:center;padding:64px 20px}
.xg-empty__icon{width:48px;height:48px;margin:0 auto 18px;color:var(--line-strong)}
.xg-empty h2{font-size:20px;margin-bottom:10px}
.xg-empty p{color:var(--text-2);font-size:15px;margin-bottom:22px}

/* 侧栏 */
.xg-side{display:flex;flex-direction:column;gap:20px;position:sticky;top:92px}
@media (max-width:991px){.xg-side{position:static}}
.xg-side__title{font-size:15px;font-weight:600;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.xg-side__title::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary)}
.xg-toc{display:flex;flex-direction:column;gap:2px}
.xg-toc a{
  display:block;padding:8px 12px;border-radius:10px;font-size:14px;color:var(--text-2);border-left:2px solid transparent;
}
.xg-toc a:hover{background:rgba(25,200,216,.08);color:var(--text-1)}
.xg-toc a.is-current{color:var(--primary);border-left-color:var(--primary);background:rgba(25,200,216,.08)}
.xg-mini{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--line)}
.xg-mini:last-child{border-bottom:0;padding-bottom:0}
.xg-mini:first-child{padding-top:0}
.xg-mini__thumb{width:76px;height:52px;border-radius:10px;object-fit:cover;border:1px solid var(--line);flex:none;background:var(--bg-1)}
.xg-mini h4{font-size:14px;line-height:1.5;font-weight:600;margin-bottom:6px}
.xg-mini h4 a:hover{color:var(--primary)}
.xg-mini span{font-size:12px;color:var(--text-3)}
.xg-side__cta{text-align:center}
.xg-side__cta p{font-size:13px;color:var(--text-3);margin:12px 0 0}

/* 文末导航 */
.xg-postnav{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:36px}
@media (max-width:575px){.xg-postnav{grid-template-columns:1fr}}
.xg-postnav a{
  border:1px solid var(--line);border-radius:14px;padding:16px 18px;background:var(--bg-1);
  transition:border-color .2s ease,transform .24s ease,background-color .2s ease;
}
.xg-postnav a:hover{border-color:var(--line-strong);transform:translateY(-3px);background:var(--surface)}
.xg-postnav small{display:block;font-size:12px;color:var(--text-3);margin-bottom:6px}
.xg-postnav strong{display:block;font-size:15px;font-weight:600;color:var(--text-1);line-height:1.5}

/* 相关推荐 */
.xg-sec{padding:76px 0 0}
.xg-grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px}
@media (max-width:991px){.xg-grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:575px){.xg-grid-3{grid-template-columns:minmax(0,1fr)}}
.xg-postcard{
  background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  display:flex;flex-direction:column;height:100%;
  transition:transform .32s cubic-bezier(.2,.7,.3,1),border-color .24s ease,box-shadow .24s ease;
}
.xg-postcard:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 24px rgba(25,200,216,.14)}
.xg-postcard__media{position:relative;aspect-ratio:16/10;background:var(--bg-1);overflow:hidden}
.xg-postcard__media img{width:100%;height:100%;object-fit:cover;transition:transform .32s cubic-bezier(.2,.7,.3,1)}
.xg-postcard:hover .xg-postcard__media img{transform:scale(1.04)}
.xg-postcard__body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.xg-postcard h3{font-size:17px;line-height:1.5;font-weight:600}
.xg-postcard:hover h3{color:var(--primary)}
.xg-postcard p{font-size:14px;color:var(--text-2);line-height:1.7;flex:1}
.xg-postcard__foot{display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3)}

/* FAQ */
.xg-acc{display:flex;flex-direction:column;gap:12px}
.xg-acc__item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.xg-acc__item.is-open{border-color:var(--line-strong)}
.xg-acc__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;text-align:left;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--text-1);position:relative;
}
.xg-acc__q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;background:var(--primary);
  opacity:0;transition:opacity .24s ease;
}
.xg-acc__item.is-open .xg-acc__q::before{opacity:1}
.xg-acc__q svg{width:16px;height:16px;flex:none;color:var(--text-2);transition:transform .26s ease}
.xg-acc__item.is-open .xg-acc__q svg{transform:rotate(180deg);color:var(--primary)}
.xg-acc__a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.xg-acc__a p{padding:0 20px 20px;color:var(--text-2);font-size:14px;line-height:1.8}

/* CTA */
.xg-cta{
  margin-top:80px;border:1px solid var(--line-strong);border-radius:22px;padding:36px;
  background:linear-gradient(120deg,rgba(25,200,216,.12),rgba(110,140,255,.08) 60%,rgba(7,13,24,0));
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:22px;
}
.xg-cta h2{font-size:clamp(20px,2.4vw,26px);margin-bottom:10px}
.xg-cta p{color:var(--text-2);font-size:15px;max-width:560px}
.xg-cta__btns{display:flex;flex-wrap:wrap;gap:12px}
@media (max-width:575px){.xg-cta{padding:24px 20px;border-radius:18px}.xg-cta__btns{width:100%}.xg-cta__btns .xg-btn{flex:1;min-width:140px}}

/* 页脚 */
.xg-footer{margin-top:96px;border-top:1px solid transparent;position:relative;padding:56px 0 26px}
.xg-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(25,200,216,0),rgba(25,200,216,.6),rgba(25,200,216,0));
}
.xg-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:36px}
@media (max-width:991px){.xg-footer__grid{grid-template-columns:1fr 1fr;gap:28px}}
@media (max-width:575px){.xg-footer__grid{grid-template-columns:1fr}}
.xg-footer h4{font-size:14px;font-weight:600;color:var(--text-1);margin-bottom:16px}
.xg-footer__desc{font-size:13px;color:var(--text-3);line-height:1.8;margin-top:16px}
.xg-footer__links{display:flex;flex-direction:column;gap:10px}
.xg-footer__links a{font-size:14px;color:var(--text-2);width:fit-content}
.xg-footer__links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px}
.xg-footer__info{display:flex;flex-direction:column;gap:10px;font-size:13px;color:var(--text-3);line-height:1.8}
.xg-footer__bottom{
  margin-top:40px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;align-items:center;justify-content:space-between;gap:16px;font-size:13px;color:var(--text-3);
}
.xg-totop{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface);
  color:var(--text-2);display:grid;place-items:center;flex:none;
  transition:border-color .2s ease,color .2s ease,background-color .2s ease;
}
.xg-totop:hover{border-color:var(--line-strong);color:var(--primary);background:rgba(25,200,216,.1)}
.xg-toast{
  position:fixed;left:50%;bottom:32px;transform:translate(-50%,16px);
  background:rgba(15,30,49,.96);border:1px solid var(--line-strong);color:var(--text-1);
  padding:12px 20px;border-radius:12px;font-size:14px;opacity:0;pointer-events:none;
  transition:opacity .24s ease,transform .24s ease;z-index:90;
}
.xg-toast.is-show{opacity:1;transform:translate(-50%,0)}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

/* roulang page: category1 */
:root{
  --bg-0:#070D18;
  --bg-1:#0B1524;
  --surface:rgba(16,30,48,.72);
  --surface-solid:#0F1E31;
  --line:rgba(120,190,230,.14);
  --line-strong:rgba(25,200,216,.45);
  --primary:#19C8D8;
  --primary-deep:#0E7C8C;
  --secondary:#6E8CFF;
  --accent:#F5A524;
  --text-1:#E9F2FB;
  --text-2:#A8BCCF;
  --text-3:#6E8399;
  --radius-card:16px;
  --radius-img:14px;
  --radius-btn:12px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(25,200,216,.5),0 10px 28px rgba(25,200,216,.26);
  --ease:cubic-bezier(.2,.7,.3,1);
  --bs-body-bg:var(--bg-0);
  --bs-body-color:var(--text-1);
  --bs-border-color:var(--line);
  --bs-link-color:var(--secondary);
  --bs-link-hover-color:var(--primary);
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(900px 520px at 12% -8%,rgba(25,200,216,.12),transparent 60%),
    radial-gradient(760px 460px at 92% 4%,rgba(110,140,255,.10),transparent 62%);
}
img{max-width:100%;display:block;}
a{color:var(--secondary);text-decoration:none;transition:color .22s var(--ease);}
a:hover{color:var(--primary);}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;color:var(--text-1);}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1;}
@media (max-width:991.98px){.container{padding:0 16px;}}

/* ============ header ============ */
.xg-header{
  position:sticky;top:0;z-index:60;
  background:rgba(7,13,24,.72);
  border-bottom:1px solid transparent;
  transition:background .24s ease,backdrop-filter .24s ease,border-color .24s ease;
}
.xg-header.is-stuck{
  background:rgba(7,13,24,.82);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.xg-header__inner{display:flex;align-items:center;gap:18px;min-height:70px;}
.xg-logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:600;font-size:17px;letter-spacing:.01em;}
.xg-logo:hover{color:var(--text-1);}
.xg-logo__mark{width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;border:1px solid var(--line-strong);border-radius:10px;background:rgba(25,200,216,.06);}
.xg-logo__mark svg{width:20px;height:20px;}
.xg-logo__text{white-space:nowrap;}
.xg-nav{display:flex;align-items:center;gap:8px;margin-left:12px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;}
.xg-nav::-webkit-scrollbar{display:none;}
.xg-chip{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 16px;
  border-radius:999px;border:1px solid var(--line);background:var(--surface);
  color:var(--text-2);font-size:14.5px;font-weight:500;white-space:nowrap;
  transition:color .22s var(--ease),border-color .22s var(--ease),background .22s var(--ease);
}
.xg-chip:hover{color:var(--text-1);border-color:var(--line-strong);background:rgba(25,200,216,.07);}
.xg-chip.is-active{color:var(--text-1);border-color:var(--line-strong);background:rgba(16,30,48,.85);}
.xg-chip.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);
}
.xg-header__cta{flex:0 0 auto;}
.xg-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;letter-spacing:.01em;cursor:pointer;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease),border-color .22s var(--ease),filter .22s var(--ease);
}
.xg-btn--glow{
  background:linear-gradient(135deg,#19C8D8 0%,#2FE0C4 100%);
  color:#04141A;box-shadow:var(--glow);
}
.xg-btn--glow:hover{color:#04141A;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,200,216,.5),0 14px 32px rgba(25,200,216,.32);}
.xg-btn--glow:active{background:linear-gradient(135deg,#0E7C8C,#19C8D8);transform:translateY(0);}
.xg-btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1);}
.xg-btn--ghost:hover{color:var(--text-1);background:rgba(25,200,216,.08);border-color:var(--primary);}
.xg-btn--sm{height:38px;padding:0 16px;font-size:14px;}
.xg-btn[disabled],.xg-btn.is-disabled{opacity:.45;box-shadow:none;pointer-events:none;}
.xg-burger{
  display:none;margin-left:auto;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);position:relative;cursor:pointer;
}
.xg-burger span,.xg-burger span::before,.xg-burger span::after{
  position:absolute;left:50%;width:18px;height:2px;background:var(--text-1);border-radius:2px;
  transform:translateX(-50%);transition:.24s var(--ease);content:"";
}
.xg-burger span{top:50%;margin-top:-1px;}
.xg-burger span::before{top:-6px;}
.xg-burger span::after{top:6px;}
.xg-burger[aria-expanded="true"] span{background:transparent;}
.xg-burger[aria-expanded="true"] span::before{top:0;transform:translateX(-50%) rotate(45deg);}
.xg-burger[aria-expanded="true"] span::after{top:0;transform:translateX(-50%) rotate(-45deg);}

.xg-drawer{
  position:fixed;inset:70px 0 auto 0;z-index:59;display:none;
  background:rgba(7,13,24,.97);border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  padding:12px 16px 22px;
}
.xg-drawer.is-open{display:block;}
.xg-drawer a{
  display:flex;align-items:center;height:44px;padding:0 14px;border-radius:12px;
  color:var(--text-2);font-size:15px;border-left:3px solid transparent;
}
.xg-drawer a:hover{color:var(--text-1);background:rgba(25,200,216,.06);}
.xg-drawer a.is-active{color:var(--text-1);border-left-color:var(--primary);background:rgba(25,200,216,.08);}
.xg-overlay{position:fixed;inset:0;background:rgba(4,8,16,.7);z-index:58;display:none;}
.xg-overlay.is-open{display:block;}

@media (max-width:991.98px){
  .xg-nav,.xg-header__cta{display:none;}
  .xg-burger{display:block;}
}

/* ============ hero ============ */
.xg-hero{
  position:relative;min-height:290px;display:flex;align-items:center;
  background-image:linear-gradient(180deg,rgba(7,13,24,.42),rgba(7,13,24,.94)),url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  overflow:hidden;
}
.xg-hero::after{
  content:"";position:absolute;inset:0;
  background-image:repeating-linear-gradient(0deg,rgba(120,190,230,.05) 0 1px,transparent 1px 56px),
                   repeating-linear-gradient(90deg,rgba(120,190,230,.05) 0 1px,transparent 1px 56px);
  opacity:.5;pointer-events:none;
}
.xg-hero__inner{position:relative;z-index:2;padding:44px 0 40px;}
.xg-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px;}
.xg-crumb a{color:var(--text-3);}
.xg-crumb a:hover{color:var(--primary);}
.xg-crumb span.sep{color:rgba(110,131,153,.6);}
.xg-hero h1{font-size:clamp(28px,4vw,46px);line-height:1.25;letter-spacing:-.02em;font-weight:700;max-width:840px;}
.xg-hero__sub{margin-top:14px;max-width:660px;color:var(--text-2);font-size:16px;line-height:1.8;}
.xg-hero__actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;}

/* ============ 通用板块 ============ */
.xg-section{padding:88px 0;}
.xg-section--tight{padding:64px 0;}
.xg-section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.xg-head{margin-bottom:36px;max-width:760px;}
.xg-head__kicker{
  display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--accent);
  letter-spacing:.08em;text-transform:uppercase;margin-bottom:12px;font-weight:600;
}
.xg-head__kicker::before{content:"";width:22px;height:1px;background:var(--accent);display:inline-block;}
.xg-head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
.xg-head p{margin-top:12px;color:var(--text-2);font-size:15.5px;line-height:1.85;}
.xg-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;max-width:none;}
.xg-head--row .xg-linkmore{color:var(--secondary);font-weight:600;font-size:14.5px;white-space:nowrap;}
.xg-head--row .xg-linkmore:hover{color:var(--primary);}

/* 数据条 */
.xg-stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--radius-card);background:var(--surface);overflow:hidden;}
.xg-stat{padding:26px 22px;border-right:1px solid var(--line);position:relative;}
.xg-stat:last-child{border-right:0;}
.xg-stat__num{display:block;font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:26px;font-weight:700;color:var(--accent);letter-spacing:.01em;}
.xg-stat__label{margin-top:8px;font-size:14px;color:var(--text-2);}
.xg-stat__note{margin-top:4px;font-size:13px;color:var(--text-3);}

/* 卡片 */
.xg-grid{display:grid;gap:24px;}
.xg-grid--3{grid-template-columns:repeat(3,1fr);}
.xg-grid--2{grid-template-columns:repeat(2,1fr);}
.xg-grid--4{grid-template-columns:repeat(4,1fr);}
.xg-card{
  position:relative;background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;box-shadow:var(--shadow-card);
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.xg-card::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;border-radius:var(--radius-card) var(--radius-card) 0 0;
  background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:opacity .32s var(--ease);
}
.xg-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 24px rgba(25,200,216,.18);}
.xg-card:hover::before{opacity:1;}
.xg-card h3{font-size:18px;line-height:1.45;}
.xg-card p{margin-top:10px;color:var(--text-2);font-size:14.5px;line-height:1.8;}
.xg-card--media{padding:0;overflow:hidden;}
.xg-card--media .xg-thumb{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--bg-1);border-bottom:1px solid var(--line);}
.xg-card--media .xg-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease);}
.xg-card--media:hover .xg-thumb img{transform:scale(1.04);}
.xg-card--media .xg-body{padding:22px 24px 24px;}

.xg-badges{display:flex;flex-wrap:wrap;gap:8px;}
.xg-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:999px;
  border:1px solid var(--line);background:var(--surface);font-size:12px;color:var(--text-2);
}
.xg-badge--cat{color:var(--secondary);border-color:rgba(110,140,255,.32);}
.xg-badge--accent{color:var(--accent);border-color:rgba(245,165,36,.32);}
.xg-badge--ok{color:var(--primary);border-color:var(--line-strong);}
.xg-meta{margin-top:16px;font-size:13px;color:var(--text-3);font-family:"Inter","DIN Alternate",system-ui,monospace;}

/* 清单 + 侧栏 */
.xg-split{display:grid;grid-template-columns:8fr 4fr;gap:28px;align-items:start;}
.xg-listcard{display:flex;gap:18px;align-items:center;padding:18px 20px;background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--radius-card);transition:border-color .3s var(--ease),transform .3s var(--ease),background .3s var(--ease);}
.xg-listcard:hover{border-color:var(--line-strong);transform:translateY(-3px);background:rgba(15,30,49,.95);}
.xg-listcard__thumb{flex:0 0 116px;width:116px;aspect-ratio:3/2;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--bg-1);}
.xg-listcard__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease);}
.xg-listcard:hover .xg-listcard__thumb img{transform:scale(1.05);}
.xg-listcard__no{font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:13px;color:var(--accent);font-weight:700;}
.xg-listcard h3{font-size:17px;line-height:1.45;margin-top:2px;}
.xg-listcard p{margin-top:6px;color:var(--text-2);font-size:14px;line-height:1.7;}
.xg-liststack{display:grid;gap:14px;}

.xg-sticky{position:sticky;top:96px;display:grid;gap:18px;}
.xg-panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);padding:22px;backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);}
.xg-panel h4{font-size:15px;letter-spacing:.02em;color:var(--text-1);margin-bottom:14px;}
.xg-panel__link{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:11px 12px;border-radius:10px;color:var(--text-2);font-size:14.5px;border:1px solid transparent;transition:.24s var(--ease);}
.xg-panel__link:hover{color:var(--text-1);background:rgba(25,200,216,.07);border-color:var(--line);}
.xg-panel__link.is-current{color:var(--text-1);border-color:var(--line-strong);background:rgba(25,200,216,.09);}
.xg-panel__link i{font-style:normal;color:var(--text-3);font-size:13px;}
.xg-panel__tip{margin-top:14px;padding-top:14px;border-top:1px dashed rgba(120,190,230,.2);font-size:13px;color:var(--text-3);line-height:1.7;}

/* 流程 */
.xg-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;background:var(--surface);}
.xg-step{padding:26px 22px;border-right:1px solid var(--line);position:relative;}
.xg-step:last-child{border-right:0;}
.xg-step__no{font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:13px;font-weight:700;color:var(--accent);letter-spacing:.1em;}
.xg-step h3{font-size:17px;margin-top:10px;}
.xg-step p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75;}

/* 对照清单 */
.xg-check{display:grid;grid-template-columns:repeat(2,1fr);gap:0 32px;}
.xg-check li{display:flex;gap:14px;padding:18px 0;border-bottom:1px dashed rgba(120,190,230,.2);}
.xg-check li:last-child{border-bottom:0;}
.xg-check__no{flex:0 0 auto;font-family:"Inter","DIN Alternate",system-ui,monospace;font-size:14px;color:var(--accent);font-weight:700;padding-top:2px;}
.xg-check h3{font-size:16px;}
.xg-check p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.75;}

/* FAQ */
.xg-acc{display:grid;gap:12px;max-width:900px;}
.xg-acc__item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .26s var(--ease);}
.xg-acc__item.is-open{border-color:var(--line-strong);}
.xg-acc__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;color:var(--text-1);
  font-size:17px;font-weight:600;text-align:left;cursor:pointer;position:relative;
}
.xg-acc__item.is-open .xg-acc__q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;background:var(--primary);border-radius:2px;}
.xg-acc__icon{flex:0 0 auto;width:12px;height:12px;transition:transform .26s var(--ease);}
.xg-acc__icon::before{content:"";display:block;width:8px;height:8px;border-right:2px solid var(--primary);border-bottom:2px solid var(--primary);transform:rotate(45deg);margin-left:2px;}
.xg-acc__item.is-open .xg-acc__icon{transform:rotate(180deg);}
.xg-acc__a{max-height:0;overflow:hidden;transition:max-height .26s var(--ease);}
.xg-acc__a p{padding:0 22px 20px;color:var(--text-2);font-size:14px;line-height:1.8;}

/* CTA */
.xg-cta{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  padding:38px 36px;border:1px solid var(--line-strong);border-radius:var(--radius-card);
  background:linear-gradient(120deg,rgba(25,200,216,.12),rgba(110,140,255,.08) 55%,rgba(245,165,36,.06));
  box-shadow:var(--shadow-card);
}
.xg-cta h2{font-size:clamp(20px,2.3vw,26px);line-height:1.35;}
.xg-cta p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:560px;}
.xg-cta__actions{display:flex;flex-wrap:wrap;gap:12px;}
.xg-copyhint{margin-top:12px;font-size:13px;color:var(--accent);min-height:18px;}

/* footer */
.xg-footer{position:relative;background:var(--bg-1);border-top:1px solid var(--line);padding:64px 0 28px;margin-top:0;}
.xg-footer::before{content:"";position:absolute;left:0;right:0;top:-1px;height:1px;background:linear-gradient(90deg,transparent,rgba(25,200,216,.6),transparent);}
.xg-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;gap:36px;}
.xg-footer h4{font-size:15px;margin-bottom:16px;color:var(--text-1);}
.xg-footer__desc{margin-top:16px;color:var(--text-2);font-size:14px;line-height:1.8;max-width:320px;}
.xg-footer__links{display:grid;gap:10px;}
.xg-footer__links a{color:var(--text-2);font-size:14.5px;width:fit-content;border-bottom:1px solid transparent;transition:.24s var(--ease);}
.xg-footer__links a:hover{color:var(--primary);border-bottom-color:var(--primary);}
.xg-footer__info{display:grid;gap:10px;color:var(--text-3);font-size:14px;line-height:1.7;}
.xg-footer__bottom{
  margin-top:44px;padding-top:20px;border-top:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:var(--text-3);font-family:"Inter","DIN Alternate",system-ui,monospace;
}
.xg-totop{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line-strong);background:transparent;
  color:var(--text-1);font-size:15px;line-height:1;cursor:pointer;transition:.24s var(--ease);
}
.xg-totop:hover{background:rgba(25,200,216,.1);border-color:var(--primary);transform:translateY(-2px);}

/* 响应式 */
@media (max-width:1199.98px){
  .xg-split{grid-template-columns:7fr 5fr;}
  .xg-steps{grid-template-columns:repeat(2,1fr);}
  .xg-step:nth-child(2){border-right:0;}
  .xg-step:nth-child(1),.xg-step:nth-child(2){border-bottom:1px solid var(--line);}
}
@media (max-width:991.98px){
  .xg-section{padding:64px 0;}
  .xg-split{grid-template-columns:1fr;}
  .xg-sticky{position:static;}
  .xg-grid--3,.xg-grid--4{grid-template-columns:repeat(2,1fr);}
  .xg-stats{grid-template-columns:repeat(2,1fr);}
  .xg-stat:nth-child(2){border-right:0;}
  .xg-stat:nth-child(1),.xg-stat:nth-child(2){border-bottom:1px solid var(--line);}
  .xg-footer__grid{grid-template-columns:1fr 1fr;gap:28px;}
  .xg-hero__inner{padding:36px 0 32px;}
}
@media (max-width:767.98px){
  .xg-head--row{flex-direction:column;align-items:flex-start;}
  .xg-check{grid-template-columns:1fr;}
  .xg-cta{padding:28px 22px;}
  .xg-listcard{align-items:flex-start;}
  .xg-listcard__thumb{flex:0 0 92px;width:92px;}
}
@media (max-width:575.98px){
  body{font-size:15.5px;}
  .xg-grid--3,.xg-grid--4,.xg-grid--2{grid-template-columns:1fr;}
  .xg-stats{grid-template-columns:1fr;}
  .xg-stat{border-right:0;border-bottom:1px solid var(--line);}
  .xg-stat:last-child{border-bottom:0;}
  .xg-steps{grid-template-columns:1fr;}
  .xg-step{border-right:0;border-bottom:1px solid var(--line);}
  .xg-step:last-child{border-bottom:0;}
  .xg-footer__grid{grid-template-columns:1fr;}
  .xg-hero{min-height:auto;}
  .xg-hero__actions .xg-btn{width:100%;}
  .xg-listcard{flex-direction:column;}
  .xg-listcard__thumb{width:100%;flex:0 0 auto;}
}

/* roulang page: category2 */
:root{
  --bg-0:#070D18;
  --bg-1:#0B1524;
  --surface:rgba(16,30,48,.72);
  --surface-solid:#0F1E31;
  --line:rgba(120,190,230,.14);
  --line-strong:rgba(25,200,216,.45);
  --primary:#19C8D8;
  --primary-deep:#0E7C8C;
  --secondary:#6E8CFF;
  --accent:#F5A524;
  --text-1:#E9F2FB;
  --text-2:#A8BCCF;
  --text-3:#6E8399;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --shadow-card:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(25,200,216,.5),0 10px 28px rgba(25,200,216,.26);
  --container:1200px;
  --bs-body-bg:#070D18;
  --bs-body-color:#E9F2FB;
  --bs-border-color:rgba(120,190,230,.14);
  --bs-primary:#19C8D8;
  --bs-link-color:#6E8CFF;
  --bs-link-hover-color:#19C8D8;
  --bs-border-radius:12px;
  --bs-font-sans-serif:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body.xg-locked{overflow:hidden;}
img{max-width:100%;display:block;}
a{color:var(--secondary);text-decoration:none;transition:color .22s ease;}
a:hover{color:var(--primary);}
button{font-family:inherit;}
h1,h2,h3,h4{margin:0;color:var(--text-1);font-weight:600;letter-spacing:-.01em;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}
.xg-num{font-family:"Inter","DIN Alternate",system-ui,monospace;font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.xg-header{position:sticky;top:0;z-index:1000;background:rgba(7,13,24,.55);border-bottom:1px solid transparent;transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;}
.xg-header.is-stuck{background:rgba(7,13,24,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom-color:var(--line);}
.xg-header__inner{display:flex;align-items:center;gap:18px;min-height:72px;}
.xg-logo{display:inline-flex;align-items:center;gap:10px;color:var(--text-1);font-weight:700;font-size:16px;letter-spacing:.01em;flex:none;}
.xg-logo:hover{color:var(--text-1);}
.xg-logo__mark{width:34px;height:34px;display:grid;place-items:center;border-radius:10px;background:rgba(25,200,216,.08);border:1px solid var(--line-strong);flex:none;}
.xg-logo__mark svg{width:20px;height:20px;}
.xg-logo__text{white-space:nowrap;}
.xg-nav{display:flex;align-items:center;gap:8px;margin-left:auto;}
.xg-chip{position:relative;display:inline-flex;align-items:center;height:38px;padding:0 16px;border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);color:var(--text-2);font-size:14px;font-weight:500;white-space:nowrap;transition:color .22s ease,border-color .22s ease,background .22s ease;}
.xg-chip::after{content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;background:linear-gradient(90deg,transparent,var(--primary),transparent);opacity:0;transition:opacity .22s ease;}
.xg-chip:hover{color:var(--text-1);border-color:var(--line-strong);}
.xg-chip.is-active{color:#E9F2FB;border-color:var(--line-strong);background:rgba(16,30,48,.88);}
.xg-chip.is-active::after{opacity:1;}
.xg-header__cta{flex:none;}
.xg-burger{display:none;width:44px;height:44px;border-radius:12px;background:var(--surface);border:1px solid var(--line);position:relative;cursor:pointer;flex:none;}
.xg-burger span{position:absolute;left:50%;top:50%;width:18px;height:2px;background:var(--text-1);border-radius:2px;transform:translate(-50%,-50%);transition:background .22s ease;}
.xg-burger span::before,.xg-burger span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text-1);border-radius:2px;transition:transform .22s ease,top .22s ease;}
.xg-burger span::before{top:-6px;}
.xg-burger span::after{top:6px;}
.xg-burger.is-open span{background:transparent;}
.xg-burger.is-open span::before{top:0;transform:rotate(45deg);}
.xg-burger.is-open span::after{top:0;transform:rotate(-45deg);}

/* ---------- 按钮 / 徽章 ---------- */
.xg-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:44px;padding:0 22px;border-radius:var(--r-btn);font-size:15px;font-weight:600;letter-spacing:.01em;border:1px solid transparent;cursor:pointer;transition:transform .22s ease,box-shadow .22s ease,background .22s ease,filter .22s ease,color .22s ease;}
.xg-btn--glow{background:linear-gradient(135deg,#19C8D8,#3FE0B0);color:#04141A;box-shadow:var(--glow);}
.xg-btn--glow:hover{color:#04141A;filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,200,216,.62),0 12px 32px rgba(25,200,216,.34);}
.xg-btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1);}
.xg-btn--ghost:hover{color:var(--text-1);background:rgba(25,200,216,.08);transform:translateY(-1px);}
.xg-btn--sm{height:38px;padding:0 16px;font-size:14px;}
.xg-badges{display:flex;flex-wrap:wrap;gap:8px;}
.xg-badge{display:inline-flex;align-items:center;height:24px;padding:0 11px;border-radius:var(--r-pill);background:var(--surface);border:1px solid var(--line);font-size:12px;line-height:1;color:var(--text-2);}
.xg-badge--cat{color:var(--secondary);}
.xg-badge--accent{color:var(--accent);}
.xg-tag{display:inline-flex;align-items:center;height:24px;padding:0 10px;border-radius:var(--r-pill);background:rgba(25,200,216,.08);border:1px solid var(--line-strong);font-size:12px;color:var(--primary);}

/* ---------- Hero ---------- */
.xg-hero{position:relative;display:flex;align-items:flex-end;min-height:340px;padding:72px 0 46px;overflow:hidden;border-bottom:1px solid var(--line);}
.xg-hero__bg{position:absolute;inset:0;background-image:url('/assets/images/backpic/back-1.webp');background-size:cover;background-position:center;transform:scale(1.02);}
.xg-hero__veil{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,13,24,.52) 0%,rgba(7,13,24,.78) 48%,rgba(7,13,24,.96) 100%);}
.xg-hero__grid{position:absolute;inset:0;opacity:.5;background-image:linear-gradient(rgba(120,190,230,.06) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,230,.06) 1px,transparent 1px);background-size:64px 64px;}
.xg-hero__inner{position:relative;z-index:2;width:100%;}
.xg-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:16px;}
.xg-crumb a{color:var(--text-3);}
.xg-crumb a:hover{color:var(--primary);}
.xg-crumb .sep{opacity:.55;}
.xg-hero h1{font-size:clamp(28px,4vw,46px);line-height:1.25;font-weight:700;letter-spacing:-.02em;color:#FFFFFF;max-width:16em;}
.xg-hero__sub{margin-top:14px;font-size:16px;line-height:1.8;color:var(--text-2);max-width:44em;}
.xg-hero__row{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px;}

/* ---------- 通用板块 ---------- */
.xg-section{padding:88px 0;}
.xg-section--tight{padding:64px 0;}
.xg-section__head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:40px;}
.xg-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;color:var(--primary);letter-spacing:.06em;margin-bottom:12px;}
.xg-eyebrow::before{content:"";width:3px;height:14px;border-radius:2px;background:var(--primary);}
.xg-section__head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;}
.xg-section__lead{max-width:38em;font-size:15px;color:var(--text-2);}

/* ---------- 数据条 ---------- */
.xg-stats{padding:0;}
.xg-stats__grid{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-card);background:linear-gradient(180deg,rgba(11,21,36,.9),rgba(11,21,36,.55));overflow:hidden;}
.xg-stat{padding:26px 24px;border-left:1px solid var(--line);}
.xg-stat:first-child{border-left:none;}
.xg-stat__idx{font-size:12px;color:var(--text-3);letter-spacing:.1em;}
.xg-stat__num{display:block;margin-top:10px;font-size:32px;font-weight:700;color:var(--accent);line-height:1.1;}
.xg-stat__num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px;}
.xg-stat__label{display:block;margin-top:8px;font-size:15px;font-weight:600;color:var(--text-1);}
.xg-stat__desc{display:block;margin-top:6px;font-size:13px;color:var(--text-3);line-height:1.65;}

/* ---------- 时间线 ---------- */
.xg-timeline{position:relative;padding-left:56px;}
.xg-timeline::before{content:"";position:absolute;left:15px;top:14px;bottom:14px;width:1px;background:linear-gradient(180deg,rgba(25,200,216,.6),rgba(25,200,216,.05));}
.xg-tl-item{position:relative;margin-bottom:34px;}
.xg-tl-item:last-child{margin-bottom:0;}
.xg-tl-item::before{content:"";position:absolute;left:-47px;top:26px;width:11px;height:11px;border-radius:50%;background:var(--bg-0);border:2px solid var(--primary);box-shadow:0 0 0 4px rgba(25,200,216,.12);}
.xg-tl-date{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--accent);letter-spacing:.04em;margin-bottom:12px;}
.xg-tl-date em{font-style:normal;color:var(--text-3);}
.xg-tl-card{display:grid;grid-template-columns:4fr 8fr;gap:22px;align-items:center;background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);padding:18px;box-shadow:var(--shadow-card);transition:transform .32s cubic-bezier(.2,.7,.3,1),border-color .32s ease,box-shadow .32s ease;}
.xg-tl-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 24px rgba(25,200,216,.18);}
.xg-tl-item.is-flip .xg-tl-card{grid-template-columns:8fr 4fr;}
.xg-tl-item.is-flip .xg-tl-media{order:2;}
.xg-tl-media{overflow:hidden;border-radius:12px;border:1px solid var(--line);background:var(--bg-1);}
.xg-tl-media img{width:100%;aspect-ratio:4/3;object-fit:cover;transition:transform .32s ease;}
.xg-tl-card:hover .xg-tl-media img{transform:scale(1.04);}
.xg-tl-body h3{font-size:17px;line-height:1.45;margin-bottom:8px;}
.xg-tl-body p{font-size:14.5px;color:var(--text-2);line-height:1.75;}
.xg-tl-meta{display:flex;flex-wrap:wrap;gap:8px;margin-top:14px;}

/* ---------- 分区卡片 ---------- */
.xg-zone__grid{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;}
.xg-card{display:flex;flex-direction:column;background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-card);transition:transform .32s cubic-bezier(.2,.7,.3,1),border-color .32s ease,box-shadow .32s ease;}
.xg-card:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:var(--shadow-card),0 0 24px rgba(25,200,216,.18);}
.xg-card__media{position:relative;overflow:hidden;background:var(--bg-1);}
.xg-card__media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .32s ease;}
.xg-card:hover .xg-card__media img{transform:scale(1.04);}
.xg-card__media .xg-tag{position:absolute;left:12px;top:12px;background:rgba(7,13,24,.78);backdrop-filter:blur(6px);}
.xg-card__body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1;}
.xg-card__body h3{font-size:17px;line-height:1.45;}
.xg-card__body p{font-size:14px;color:var(--text-2);line-height:1.72;}
.xg-card__foot{margin-top:auto;padding-top:12px;border-top:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--text-3);}

/* ---------- 流程阶梯 ---------- */
.xg-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:22px;position:relative;}
.xg-step{position:relative;padding:24px 22px;border-radius:var(--r-card);background:var(--surface);border:1px solid var(--line);transition:border-color .28s ease,transform .28s ease;}
.xg-step:hover{border-color:var(--line-strong);transform:translateY(-3px);}
.xg-step__no{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:10px;background:rgba(25,200,216,.1);border:1px solid var(--line-strong);color:var(--primary);font-size:14px;font-weight:600;}
.xg-step h3{margin-top:16px;font-size:16px;line-height:1.5;}
.xg-step p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.72;}

/* ---------- 说明区 ---------- */
.xg-split{display:grid;grid-template-columns:7fr 5fr;gap:32px;align-items:start;}
.xg-note{background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);padding:26px;}
.xg-note h3{font-size:17px;margin-bottom:14px;}
.xg-note ul{display:flex;flex-direction:column;gap:12px;}
.xg-note li{position:relative;padding-left:18px;font-size:14.5px;color:var(--text-2);line-height:1.75;}
.xg-note li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:var(--primary);}
.xg-figure{border-radius:var(--r-card);overflow:hidden;border:1px solid var(--line);background:var(--bg-1);}
.xg-figure img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.xg-figure figcaption{padding:14px 18px;font-size:13px;color:var(--text-3);border-top:1px solid var(--line);}

/* ---------- FAQ ---------- */
.xg-acc{display:flex;flex-direction:column;gap:12px;max-width:920px;}
.xg-acc__item{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .26s ease;}
.xg-acc__item.is-open{border-color:var(--line-strong);}
.xg-acc__q{position:relative;width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:18px 20px 18px 22px;background:transparent;border:0;color:var(--text-1);font-size:17px;font-weight:600;text-align:left;cursor:pointer;}
.xg-acc__q::before{content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;background:var(--primary);opacity:0;transition:opacity .26s ease;}
.xg-acc__item.is-open .xg-acc__q::before{opacity:1;}
.xg-acc__ico{flex:none;width:16px;height:16px;position:relative;transition:transform .26s ease;}
.xg-acc__ico::before,.xg-acc__ico::after{content:"";position:absolute;background:var(--primary);border-radius:2px;}
.xg-acc__ico::before{left:0;top:7px;width:16px;height:2px;}
.xg-acc__ico::after{left:7px;top:0;width:2px;height:16px;transition:opacity .26s ease;}
.xg-acc__item.is-open .xg-acc__ico{transform:rotate(180deg);}
.xg-acc__item.is-open .xg-acc__ico::after{opacity:0;}
.xg-acc__a{max-height:0;overflow:hidden;transition:max-height .26s ease;}
.xg-acc__item.is-open .xg-acc__a{max-height:340px;}
.xg-acc__a p{padding:0 22px 20px;font-size:14px;line-height:1.8;color:var(--text-2);}

/* ---------- CTA ---------- */
.xg-cta{margin:0 0 0;padding:0;}
.xg-cta__box{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;padding:36px 40px;border-radius:20px;background:linear-gradient(135deg,rgba(16,30,48,.92),rgba(11,21,36,.7));border:1px solid var(--line-strong);box-shadow:var(--shadow-card);}
.xg-cta__box h2{font-size:clamp(20px,2.3vw,26px);line-height:1.35;max-width:22em;}
.xg-cta__box p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:34em;}
.xg-cta__acts{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- 页脚 ---------- */
.xg-footer{position:relative;margin-top:96px;padding:64px 0 24px;background:var(--bg-1);border-top:1px solid var(--line);}
.xg-footer::before{content:"";position:absolute;top:-1px;left:0;right:0;height:1px;background:linear-gradient(90deg,transparent,rgba(25,200,216,.6),transparent);}
.xg-footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:36px;}
.xg-footer h4{font-size:15px;margin-bottom:16px;}
.xg-footer__desc{margin-top:16px;font-size:14px;line-height:1.75;color:var(--text-2);max-width:290px;}
.xg-footer__links{display:flex;flex-direction:column;gap:10px;}
.xg-footer__links a{color:var(--text-2);font-size:14px;text-underline-offset:3px;}
.xg-footer__links a:hover{color:var(--primary);text-decoration:underline;text-decoration-thickness:2px;}
.xg-footer__info{display:flex;flex-direction:column;gap:10px;font-size:13.5px;color:var(--text-3);line-height:1.7;}
.xg-footer__bottom{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:48px;padding-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--text-3);}
.xg-totop{width:36px;height:36px;border-radius:var(--r-pill);background:transparent;border:1px solid var(--line);color:var(--text-2);cursor:pointer;transition:border-color .22s ease,color .22s ease,transform .22s ease;}
.xg-totop:hover{border-color:var(--line-strong);color:var(--primary);transform:translateY(-2px);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .xg-zone__grid{grid-template-columns:repeat(2,1fr);}
  .xg-steps{grid-template-columns:repeat(2,1fr);}
}
@media (max-width:991.98px){
  .container{padding:0 16px;}
  .xg-nav{position:fixed;top:73px;left:0;right:0;bottom:0;z-index:999;flex-direction:column;align-items:stretch;gap:10px;margin:0;padding:20px 16px 40px;background:rgba(7,13,24,.97);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);transform:translateX(100%);transition:transform .28s ease;overflow-y:auto;}
  .xg-nav.is-open{transform:translateX(0);}
  .xg-chip{width:100%;height:44px;justify-content:flex-start;border-radius:12px;}
  .xg-chip::after{left:0;right:auto;top:10px;bottom:10px;width:3px;height:auto;background:var(--primary);}
  .xg-chip.is-active{border-color:var(--line);background:rgba(25,200,216,.07);}
  .xg-burger{display:block;margin-left:14px;order:3;}
  .xg-header__cta{order:2;margin-left:auto;}
  .xg-hero{min-height:300px;padding:52px 0 38px;}
  .xg-section{padding:64px 0;}
  .xg-section--tight{padding:52px 0;}
  .xg-section__head{margin-bottom:32px;}
  .xg-stats__grid{grid-template-columns:repeat(2,1fr);}
  .xg-stat:nth-child(3){border-left:none;}
  .xg-stat:nth-child(1),.xg-stat:nth-child(2){border-bottom:1px solid var(--line);}
  .xg-timeline{padding-left:32px;}
  .xg-timeline::before{left:6px;}
  .xg-tl-item::before{left:-31px;top:22px;width:9px;height:9px;}
  .xg-tl-card,.xg-tl-item.is-flip .xg-tl-card{grid-template-columns:1fr;}
  .xg-tl-item.is-flip .xg-tl-media{order:0;}
  .xg-split{grid-template-columns:1fr;}
  .xg-footer__grid{grid-template-columns:repeat(2,1fr);gap:30px;}
  .xg-cta__box{padding:28px 24px;}
}
@media (max-width:575.98px){
  .xg-header__cta{display:none;}
  .xg-stats__grid{grid-template-columns:1fr;}
  .xg-stat{border-left:none;border-bottom:1px solid var(--line);}
  .xg-stat:last-child{border-bottom:none;}
  .xg-zone__grid{grid-template-columns:1fr;}
  .xg-steps{grid-template-columns:1fr;}
  .xg-acc__q{font-size:15.5px;padding:16px 16px 16px 18px;}
  .xg-acc__a p{padding:0 18px 18px;}
  .xg-cta__acts{width:100%;}
  .xg-cta__acts .xg-btn{flex:1 1 auto;}
  .xg-footer__grid{grid-template-columns:1fr;}
  .xg-footer__bottom{flex-direction:column;align-items:flex-start;}
}

/* roulang page: category3 */
:root{
  --bg-0:#070D18;
  --bg-1:#0B1524;
  --surface:rgba(16,30,48,.72);
  --surface-solid:#0F1E31;
  --line:rgba(120,190,230,.14);
  --line-strong:rgba(25,200,216,.45);
  --primary:#19C8D8;
  --primary-deep:#0E7C8C;
  --secondary:#6E8CFF;
  --accent:#F5A524;
  --text-1:#E9F2FB;
  --text-2:#A8BCCF;
  --text-3:#6E8399;
  --r-card:16px;
  --r-img:14px;
  --r-btn:12px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --ff:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --ff-num:"Inter","DIN Alternate",system-ui,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--ff);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:var(--secondary);text-decoration:none;transition:color .22s ease}
a:hover{color:var(--primary)}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.container{width:100%;max-width:1200px!important;padding-left:24px;padding-right:24px;margin:0 auto}

/* ============ 导航 ============ */
.xg-header{
  position:sticky;top:0;z-index:1030;
  background:rgba(7,13,24,.72);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease;
}
.xg-header.is-stuck{background:rgba(7,13,24,.9);border-bottom-color:var(--line)}
.xg-header__inner{display:flex;align-items:center;gap:18px;min-height:72px}
.xg-logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto}
.xg-logo__mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(145deg,rgba(25,200,216,.18),rgba(110,140,255,.08));
  border:1px solid var(--line-strong);
  box-shadow:0 0 14px rgba(25,200,216,.16);
}
.xg-logo__mark svg{width:22px;height:22px}
.xg-logo__text{font-size:17px;font-weight:700;color:var(--text-1);white-space:nowrap}
.xg-logo:hover .xg-logo__text{color:var(--text-1)}
.xg-nav{display:flex;align-items:center;gap:8px;margin-left:auto;overflow-x:auto;scrollbar-width:none}
.xg-nav::-webkit-scrollbar{display:none}
.xg-chip{
  height:38px;padding:0 16px;display:inline-flex;align-items:center;
  border-radius:999px;background:var(--surface);border:1px solid var(--line);
  color:var(--text-2);font-size:14px;font-weight:500;white-space:nowrap;
  position:relative;transition:color .22s ease,border-color .22s ease,background .22s ease;
}
.xg-chip:hover{color:var(--text-1);border-color:var(--line-strong)}
.xg-chip.is-active{color:#E9F2FB;border-color:var(--line-strong);background:rgba(16,30,48,.9)}
.xg-chip.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:-1px;height:2px;border-radius:2px;
  background:var(--primary);box-shadow:0 0 10px rgba(25,200,216,.65);
}
.xg-header__cta{flex:0 0 auto}
.xg-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:44px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .24s var(--ease),filter .24s var(--ease),box-shadow .24s var(--ease),background .24s ease,color .24s ease;
}
.xg-btn--glow{
  background:linear-gradient(135deg,#19C8D8,#3FE0C4);color:#04141A;
  box-shadow:0 0 0 1px rgba(25,200,216,.5),0 10px 28px rgba(25,200,216,.26);
}
.xg-btn--glow:hover{filter:brightness(1.06);transform:translateY(-1px);color:#04141A;box-shadow:0 0 0 1px rgba(25,200,216,.6),0 14px 32px rgba(25,200,216,.34)}
.xg-btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.xg-btn--ghost:hover{background:rgba(25,200,216,.08);color:var(--text-1)}
.xg-btn:active{transform:translateY(0)}
.xg-btn[disabled]{opacity:.45;box-shadow:none;cursor:not-allowed}
.xg-burger{
  display:none;width:44px;height:44px;border-radius:12px;flex:0 0 auto;
  background:var(--surface);border:1px solid var(--line);position:relative;cursor:pointer;
}
.xg-burger span,.xg-burger span::before,.xg-burger span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:var(--text-1);
  transform:translateX(-50%);transition:.24s ease;
}
.xg-burger span{top:50%;margin-top:-1px}
.xg-burger span::before{content:"";top:-6px;left:0;transform:none}
.xg-burger span::after{content:"";top:6px;left:0;transform:none}
.xg-burger[aria-expanded="true"] span{background:transparent}
.xg-burger[aria-expanded="true"] span::before{top:0;transform:rotate(45deg)}
.xg-burger[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg)}

.xg-drawer{position:fixed;inset:0;z-index:1050;display:none}
.xg-drawer.is-open{display:block}
.xg-drawer__mask{position:absolute;inset:0;background:rgba(4,8,16,.72)}
.xg-drawer__panel{
  position:absolute;top:0;right:0;width:min(320px,86vw);height:100%;
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:24px 20px;display:flex;flex-direction:column;gap:8px;overflow-y:auto;
}
.xg-drawer__title{font-size:13px;color:var(--text-3);margin-bottom:8px;letter-spacing:.08em}
.xg-drawer .xg-chip{height:44px;width:100%;justify-content:flex-start;border-radius:12px}
.xg-drawer .xg-chip.is-active{border-left:3px solid var(--primary);padding-left:15px}

/* ============ 顶部标题带 ============ */
.xg-band{position:relative;overflow:hidden;background:var(--bg-1);border-bottom:1px solid var(--line);padding:52px 0 46px}
.xg-band__bg{
  position:absolute;inset:0;
  background:url(/assets/images/backpic/back-3.png) center right/cover no-repeat;
  opacity:.2;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 62%);
  mask-image:linear-gradient(90deg,transparent,#000 62%);
}
.xg-band__inner{position:relative;z-index:1;max-width:760px}
.xg-crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--text-3);margin-bottom:18px}
.xg-crumb a{color:var(--text-3)}
.xg-crumb a:hover{color:var(--primary)}
.xg-crumb span{color:var(--text-3)}
.xg-band h1{font-size:clamp(28px,4vw,42px);line-height:1.25;font-weight:700;letter-spacing:-.02em}
.xg-band h1 em{font-style:normal;color:var(--primary)}
.xg-band__lead{margin-top:16px;color:var(--text-2);font-size:16px;line-height:1.85;max-width:680px}
.xg-band__meta{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}

.xg-badges{display:flex;flex-wrap:wrap;gap:8px}
.xg-badge{
  height:24px;padding:0 12px;display:inline-flex;align-items:center;border-radius:999px;
  background:var(--surface);border:1px solid var(--line);
  font-size:12px;color:var(--text-2);white-space:nowrap;
}
.xg-badge--cat{color:var(--secondary)}
.xg-badge--accent{color:var(--accent)}

/* ============ 通用板块 ============ */
.xg-section{padding:80px 0}
.xg-section--tight{padding:64px 0}
.xg-sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:36px;flex-wrap:wrap}
.xg-sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:600}
.xg-sec-head p{color:var(--text-2);font-size:15px;margin-top:8px;max-width:620px}
.xg-sec-head .xg-more{color:var(--secondary);font-size:14px;font-weight:600}
.xg-sec-head .xg-more:hover{color:var(--primary)}

/* ============ 双栏对照 ============ */
.xg-cols{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);gap:32px;align-items:start}
.xg-feature{
  background:var(--surface-solid);border:1px solid var(--line);border-radius:var(--r-card);
  overflow:hidden;margin-bottom:24px;position:relative;
  transition:transform .32s var(--ease),border-color .32s var(--ease),box-shadow .32s var(--ease);
}
.xg-feature::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;opacity:0;
  background:linear-gradient(90deg,transparent,rgba(25,200,216,.85),transparent);
  transition:opacity .32s ease;z-index:2;
}
.xg-feature:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 18px 40px rgba(0,0,0,.45),0 0 24px rgba(25,200,216,.18)}
.xg-feature:hover::before{opacity:1}
.xg-feature__media{aspect-ratio:16/9;overflow:hidden;background:var(--bg-1);border-bottom:1px solid var(--line)}
.xg-feature__media img{width:100%;height:100%;object-fit:cover;transition:transform .32s var(--ease)}
.xg-feature:hover .xg-feature__media img{transform:scale(1.04)}
.xg-feature__body{padding:22px 24px 24px}
.xg-feature__body h3{font-size:18px;line-height:1.45;margin-bottom:10px}
.xg-feature__body p{color:var(--text-2);font-size:15px;line-height:1.8}
.xg-feature__tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}

.xg-panel{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-card);
  padding:24px;position:sticky;top:96px;
}
.xg-panel__head{display:flex;align-items:center;gap:10px;margin-bottom:8px}
.xg-panel__head h3{font-size:17px}
.xg-panel__head i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 10px rgba(245,165,36,.7);display:block}
.xg-panel__note{font-size:13px;color:var(--text-3);margin-bottom:8px}
.xg-point{display:flex;gap:14px;padding:16px 0;border-bottom:1px dashed rgba(120,190,230,.2)}
.xg-point:last-child{border-bottom:0;padding-bottom:0}
.xg-point__no{font-family:var(--ff-num);font-size:14px;font-weight:700;color:var(--accent);line-height:1.6;min-width:24px}
.xg-point__txt{font-size:14.5px;color:var(--text-2);line-height:1.75}
.xg-point__txt b{color:var(--text-1);font-weight:600}
.xg-panel__cta{margin-top:22px;display:flex;flex-direction:column;gap:10px}
.xg-panel__cta .xg-btn{width:100%}

/* ============ 流程 ============ */
.xg-steps{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.xg-step{padding:28px 22px;border-right:1px solid var(--line);position:relative;transition:background .24s ease}
.xg-step:last-child{border-right:0}
.xg-step:hover{background:rgba(25,200,216,.04)}
.xg-step__no{font-family:var(--ff-num);font-size:13px;color:var(--accent);letter-spacing:.1em}
.xg-step h3{font-size:17px;margin:12px 0 10px}
.xg-step p{color:var(--text-2);font-size:14.5px;line-height:1.8}

/* ============ 数据横条 ============ */
.xg-stats{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;background:var(--surface-solid)}
.xg-stat{padding:26px 22px;border-right:1px solid var(--line)}
.xg-stat:last-child{border-right:0}
.xg-stat__num{font-family:var(--ff-num);font-size:28px;font-weight:700;color:var(--accent);line-height:1.2}
.xg-stat__label{margin-top:6px;font-size:13.5px;color:var(--text-3)}

/* ============ FAQ ============ */
.xg-acc{display:flex;flex-direction:column;gap:12px}
.xg-acc__item{
  background:var(--surface);border:1px solid var(--line);border-radius:14px;
  overflow:hidden;transition:border-color .24s ease,background .24s ease;
}
.xg-acc__item:hover{border-color:var(--line-strong)}
.xg-acc__item.is-open{border-color:var(--line-strong);background:rgba(16,30,48,.9)}
.xg-acc__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;background:transparent;border:0;cursor:pointer;
  color:var(--text-1);font-size:17px;font-weight:600;text-align:left;position:relative;
}
.xg-acc__q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--primary);opacity:0;transition:opacity .26s ease;
}
.xg-acc__item.is-open .xg-acc__q::before{opacity:1}
.xg-acc__icon{
  flex:0 0 auto;width:18px;height:18px;position:relative;transition:transform .26s ease;
}
.xg-acc__icon::before,.xg-acc__icon::after{
  content:"";position:absolute;background:var(--text-2);border-radius:2px;
}
.xg-acc__icon::before{left:0;right:0;top:8px;height:2px}
.xg-acc__icon::after{top:0;bottom:0;left:8px;width:2px}
.xg-acc__item.is-open .xg-acc__icon{transform:rotate(180deg)}
.xg-acc__item.is-open .xg-acc__icon::after{opacity:0}
.xg-acc__a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.xg-acc__item.is-open .xg-acc__a{max-height:400px}
.xg-acc__a p{padding:0 22px 20px;color:var(--text-2);font-size:14px;line-height:1.85}

/* ============ CTA ============ */
.xg-cta{
  position:relative;overflow:hidden;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:40px;display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.xg-cta::after{
  content:"";position:absolute;right:-60px;top:-60px;width:240px;height:240px;border-radius:50%;
  background:radial-gradient(circle,rgba(25,200,216,.18),transparent 70%);
}
.xg-cta__txt{position:relative;z-index:1;max-width:620px}
.xg-cta__txt h2{font-size:clamp(20px,2.4vw,26px)}
.xg-cta__txt p{color:var(--text-2);font-size:15px;margin-top:10px}
.xg-cta__act{position:relative;z-index:1;display:flex;gap:12px;flex-wrap:wrap}
.xg-toast{
  margin-top:14px;font-size:13px;color:var(--accent);opacity:0;transition:opacity .24s ease;
}
.xg-toast.is-show{opacity:1}

/* ============ 页脚 ============ */
.xg-footer{position:relative;background:var(--bg-1);padding:64px 0 0;margin-top:20px}
.xg-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,rgba(25,200,216,.6),transparent);
}
.xg-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding-bottom:44px}
.xg-footer h4{font-size:15px;color:var(--text-1);margin-bottom:16px}
.xg-footer__desc{color:var(--text-2);font-size:14px;line-height:1.8;margin-top:16px;max-width:300px}
.xg-footer__links{display:flex;flex-direction:column;gap:12px}
.xg-footer__links a{color:var(--text-2);font-size:14px;width:fit-content}
.xg-footer__links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:2px}
.xg-footer__info{display:flex;flex-direction:column;gap:12px;color:var(--text-3);font-size:13.5px;line-height:1.7}
.xg-footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);flex-wrap:wrap;
}
.xg-totop{
  width:36px;height:36px;border-radius:50%;background:var(--surface);
  border:1px solid var(--line);color:var(--text-2);font-size:14px;cursor:pointer;
  transition:.24s ease;
}
.xg-totop:hover{border-color:var(--line-strong);color:var(--text-1);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  .xg-footer__grid{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
  .xg-footer__grid>div:last-child{grid-column:span 3}
}
@media (max-width:991px){
  .container{padding-left:20px;padding-right:20px}
  .xg-nav{display:none}
  .xg-burger{display:block}
  .xg-header__inner{gap:12px;min-height:64px}
  .xg-header__cta{height:40px;padding:0 14px;font-size:14px;margin-left:auto}
  .xg-section{padding:56px 0}
  .xg-section--tight{padding:48px 0}
  .xg-cols{grid-template-columns:1fr;gap:24px}
  .xg-panel{position:static}
  .xg-steps{grid-template-columns:repeat(2,1fr)}
  .xg-step:nth-child(2){border-right:0}
  .xg-step:nth-child(1),.xg-step:nth-child(2){border-bottom:1px solid var(--line)}
  .xg-stats{grid-template-columns:repeat(2,1fr)}
  .xg-stat:nth-child(2){border-right:0}
  .xg-stat:nth-child(1),.xg-stat:nth-child(2){border-bottom:1px solid var(--line)}
  .xg-cta{padding:32px 24px}
  .xg-band{padding:40px 0 36px}
}
@media (max-width:767px){
  .xg-footer__grid{grid-template-columns:1fr;gap:28px}
  .xg-footer__grid>div:last-child{grid-column:auto}
  .xg-logo__text{font-size:15px}
}
@media (max-width:575px){
  .container{padding-left:16px;padding-right:16px}
  .xg-header__cta{display:none}
  .xg-burger{margin-left:auto}
  .xg-steps{grid-template-columns:1fr}
  .xg-step{border-right:0;border-bottom:1px solid var(--line)}
  .xg-steps>.xg-step:last-child{border-bottom:0}
  .xg-stats{grid-template-columns:1fr}
  .xg-stat{border-right:0;border-bottom:1px solid var(--line)}
  .xg-stat:last-child{border-bottom:0}
  .xg-acc__q{font-size:15.5px;padding:16px 18px}
  .xg-acc__a p{padding:0 18px 18px}
  .xg-feature__body{padding:18px 18px 20px}
  .xg-cta__act{width:100%}
  .xg-cta__act .xg-btn{flex:1 1 auto}
  .xg-band h1{font-size:26px}
}

/* roulang page: category4 */
:root{
  --bg-0:#070D18;
  --bg-1:#0B1524;
  --surface:rgba(16,30,48,.72);
  --surface-solid:#0F1E31;
  --line:rgba(120,190,230,.14);
  --line-strong:rgba(25,200,216,.45);
  --primary:#19C8D8;
  --primary-deep:#0E7C8C;
  --secondary:#6E8CFF;
  --accent:#F5A524;
  --text-1:#E9F2FB;
  --text-2:#A8BCCF;
  --text-3:#6E8399;
  --r-card:16px;
  --r-btn:12px;
  --r-pill:999px;
  --sh-card:0 18px 40px rgba(0,0,0,.45);
  --glow:0 0 0 1px rgba(25,200,216,.5),0 10px 28px rgba(25,200,216,.26);
  --sec-gap:104px;
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC",system-ui,sans-serif;
  --font-num:"Inter","DIN Alternate",system-ui,monospace;

  --bs-body-bg:#070D18;
  --bs-body-color:#E9F2FB;
  --bs-border-color:rgba(120,190,230,.14);
  --bs-primary:#19C8D8;
  --bs-border-radius:16px;
  --bs-link-color:#6E8CFF;
  --bs-link-hover-color:#19C8D8;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text-1);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  pointer-events:none;
  z-index:0;
  background:
    radial-gradient(680px 420px at 12% -6%,rgba(25,200,216,.12),transparent 68%),
    radial-gradient(560px 380px at 92% 8%,rgba(110,140,255,.10),transparent 70%),
    linear-gradient(180deg,rgba(7,13,24,0) 60%,rgba(11,21,36,.6));
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:4px}

.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;position:relative;z-index:1}

/* ============ 顶部导航 ============ */
.xg-header{
  position:sticky;top:0;z-index:1000;
  background:rgba(7,13,24,.74);
  border-bottom:1px solid transparent;
  transition:background .24s ease,border-color .24s ease,backdrop-filter .24s ease;
}
.xg-header.is-stuck{
  background:rgba(7,13,24,.88);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--line);
}
.xg-header__inner{display:flex;align-items:center;gap:18px;min-height:74px}
.xg-logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0}
.xg-logo__mark{
  width:36px;height:36px;border-radius:11px;display:grid;place-items:center;
  background:rgba(25,200,216,.09);
  border:1px solid var(--line-strong);
  box-shadow:0 0 18px rgba(25,200,216,.16);
}
.xg-logo__mark svg{width:22px;height:22px}
.xg-logo__text{font-size:17px;font-weight:600;color:var(--text-1);letter-spacing:.02em;white-space:nowrap}

.xg-nav{display:flex;align-items:center;gap:8px;margin-left:auto;flex-wrap:nowrap}
.xg-chip{
  position:relative;
  display:inline-flex;align-items:center;justify-content:center;
  height:38px;padding:0 16px;
  border-radius:var(--r-pill);
  background:var(--surface);
  border:1px solid var(--line);
  color:var(--text-2);
  font-size:14px;font-weight:500;
  white-space:nowrap;
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.xg-chip:hover{color:var(--text-1);border-color:var(--line-strong)}
.xg-chip.is-active{
  color:#E9F2FB;
  border-color:var(--line-strong);
  background:rgba(25,200,216,.10);
  backdrop-filter:blur(10px);
}
.xg-chip.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-1px;height:2px;border-radius:2px;
  background:linear-gradient(90deg,rgba(25,200,216,0),var(--primary),rgba(25,200,216,0));
}

.xg-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:46px;padding:0 22px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;letter-spacing:.01em;
  border:1px solid transparent;
  transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease,filter .22s ease;
}
.xg-btn--glow{
  background:linear-gradient(135deg,#19C8D8 0%,#2BE0B8 100%);
  color:#04141A;
  box-shadow:var(--glow);
}
.xg-btn--glow:hover{filter:brightness(1.06);transform:translateY(-1px);box-shadow:0 0 0 1px rgba(25,200,216,.6),0 12px 32px rgba(25,200,216,.34);color:#04141A}
.xg-btn--glow:active{background:linear-gradient(135deg,#0E7C8C 0%,#19C8D8 100%);transform:translateY(0)}
.xg-btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--text-1)}
.xg-btn--ghost:hover{background:rgba(25,200,216,.08);border-color:var(--primary);transform:translateY(-1px)}
.xg-header__cta{height:40px;padding:0 18px;font-size:14px;flex-shrink:0}

.xg-burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--surface);border:1px solid var(--line);
  position:relative;flex-shrink:0;
}
.xg-burger span,
.xg-burger span::before,
.xg-burger span::after{
  position:absolute;left:50%;height:2px;width:18px;border-radius:2px;background:var(--text-1);
  transform:translateX(-50%);transition:transform .25s ease,opacity .2s ease;
}
.xg-burger span{top:50%;margin-top:-1px}
.xg-burger span::before{content:"";top:-6px;left:0;transform:none}
.xg-burger span::after{content:"";top:6px;left:0;transform:none}
.xg-burger.is-open span{background:transparent}
.xg-burger.is-open span::before{transform:translateY(6px) rotate(45deg)}
.xg-burger.is-open span::after{transform:translateY(-6px) rotate(-45deg)}

.xg-mask{
  position:fixed;inset:0;z-index:1100;
  background:rgba(4,8,16,.7);
  backdrop-filter:blur(2px);
}

/* ============ 面包屑 / Hero ============ */
.xg-crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-3);padding-top:28px;flex-wrap:wrap}
.xg-crumb a{color:var(--text-3)}
.xg-crumb a:hover{color:var(--primary)}
.xg-crumb span.sep{color:rgba(110,131,153,.7)}
.xg-crumb strong{color:var(--text-2);font-weight:500}

.xg-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line)}
.xg-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(7,13,24,.62),rgba(7,13,24,.95)),url("/assets/images/backpic/back-2.png");
  background-size:cover;background-position:center;
  opacity:.9;
}
.xg-hero::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(120,190,230,.055) 1px,transparent 1px),linear-gradient(90deg,rgba(120,190,230,.055) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 78%);
  -webkit-mask-image:radial-gradient(circle at 30% 40%,#000 0%,transparent 78%);
  pointer-events:none;
}
.xg-hero__inner{position:relative;z-index:2;padding:34px 0 52px;max-width:820px}
.xg-eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;letter-spacing:.16em;color:var(--accent);
  text-transform:uppercase;font-family:var(--font-num);
  margin-bottom:16px;
}
.xg-eyebrow::before{content:"";width:26px;height:1px;background:var(--accent);opacity:.7}
.xg-hero h1{
  font-size:clamp(28px,4vw,46px);
  line-height:1.25;letter-spacing:-.02em;font-weight:700;
  color:#F3F9FF;
}
.xg-lead{
  margin-top:18px;font-size:17px;line-height:1.8;color:var(--text-2);max-width:640px;
}
.xg-hero__meta{display:flex;gap:24px;flex-wrap:wrap;margin-top:26px}
.xg-hero__meta div{display:flex;flex-direction:column;gap:2px}
.xg-hero__meta b{font-family:var(--font-num);font-size:20px;color:var(--accent);font-weight:700;letter-spacing:.01em}
.xg-hero__meta span{font-size:13px;color:var(--text-3)}

/* 筛选 chip */
.xg-filters{display:flex;gap:10px;flex-wrap:wrap;margin-top:34px}
.xg-filter{
  height:36px;padding:0 16px;border-radius:var(--r-pill);
  background:rgba(11,21,36,.72);
  border:1px solid var(--line);
  color:var(--text-2);font-size:14px;font-weight:500;
  transition:all .2s ease;
}
.xg-filter:hover{color:var(--text-1);border-color:var(--line-strong)}
.xg-filter.is-active{
  color:#04141A;
  background:linear-gradient(135deg,#19C8D8,#2BE0B8);
  border-color:transparent;
  box-shadow:0 0 0 1px rgba(25,200,216,.45),0 8px 22px rgba(25,200,216,.22);
}

/* ============ 板块通用 ============ */
.xg-section{padding:var(--sec-gap) 0;position:relative;z-index:1}
.xg-section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.xg-section__head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.xg-section__head h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3;letter-spacing:-.01em}
.xg-section__head p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:620px}
.xg-section__head .xg-btn{height:42px;font-size:14px}

/* ============ 画廊网格 ============ */
.xg-gallery{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  grid-auto-rows:196px;
  gap:18px;
  grid-auto-flow:dense;
}
.xg-tile{
  position:relative;display:block;overflow:hidden;
  border-radius:var(--r-card);
  border:1px solid var(--line);
  background:var(--bg-1);
  transition:transform .32s cubic-bezier(.2,.7,.3,1),border-color .32s ease,box-shadow .32s ease;
}
.xg-tile--lead{grid-column:span 2;grid-row:span 2}
.xg-tile.is-hidden{display:none}
.xg-tile img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .5s cubic-bezier(.2,.7,.3,1);opacity:.82}
.xg-tile__shade{
  position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(7,13,24,.05) 30%,rgba(7,13,24,.72) 68%,rgba(7,13,24,.94) 100%);
  transition:background .32s ease;
}
.xg-tile__body{
  position:absolute;left:0;right:0;bottom:0;
  padding:18px 18px 20px;
  display:flex;flex-direction:column;align-items:flex-start;gap:9px;
  transition:transform .32s cubic-bezier(.2,.7,.3,1);
}
.xg-tile__title{font-size:17px;font-weight:600;line-height:1.45;color:#F1F8FF;text-shadow:0 2px 12px rgba(0,0,0,.5)}
.xg-tile__desc{
  font-size:13px;line-height:1.65;color:var(--text-2);
  max-height:0;opacity:0;overflow:hidden;
  transition:max-height .32s ease,opacity .32s ease,margin .32s ease;
}
.xg-tile:hover{transform:translateY(-4px);border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(25,200,216,.35),0 18px 40px rgba(0,0,0,.5)}
.xg-tile:hover img{transform:scale(1.05);opacity:.92}
.xg-tile:hover .xg-tile__shade{background:linear-gradient(180deg,rgba(7,13,24,.28) 18%,rgba(7,13,24,.84) 62%,rgba(7,13,24,.97) 100%)}
.xg-tile:hover .xg-tile__body{transform:translateY(-6px)}
.xg-tile:hover .xg-tile__desc{max-height:78px;opacity:1}
.xg-tile--lead .xg-tile__title{font-size:clamp(19px,2vw,23px)}

.xg-badges{display:flex;gap:8px;flex-wrap:wrap}
.xg-badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;line-height:1;
  background:rgba(16,30,48,.78);border:1px solid var(--line);color:var(--text-2);
  letter-spacing:.02em;
}
.xg-badge--cat{color:var(--secondary)}
.xg-badge--accent{color:var(--accent)}
.xg-badge--ok{color:var(--primary)}

/* ============ 数据横条 + 要点清单 ============ */
.xg-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);
  overflow:hidden;
  margin-bottom:48px;
}
.xg-stat{padding:26px 24px;border-right:1px solid var(--line);position:relative}
.xg-stat:last-child{border-right:0}
.xg-stat b{
  display:block;font-family:var(--font-num);font-size:clamp(22px,2.4vw,30px);
  font-weight:700;color:var(--accent);letter-spacing:.01em;line-height:1.2;
}
.xg-stat span{display:block;margin-top:6px;font-size:13px;color:var(--text-3);line-height:1.6}
.xg-stat i{
  position:absolute;right:22px;top:22px;font-style:normal;
  font-family:var(--font-num);font-size:12px;color:rgba(110,131,153,.5);
}

.xg-points{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 40px}
.xg-point{
  display:flex;gap:16px;padding:18px 0;
  border-bottom:1px dashed rgba(120,190,230,.16);
}
.xg-point__no{
  font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--accent);
  padding-top:4px;min-width:26px;
}
.xg-point h3{font-size:16px;line-height:1.55;font-weight:600;margin-bottom:6px}
.xg-point p{font-size:14px;line-height:1.75;color:var(--text-2)}

/* ============ 流程 ============ */
.xg-flow{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.xg-flow__intro h2{font-size:clamp(22px,2.6vw,30px);line-height:1.3}
.xg-flow__intro p{margin-top:16px;color:var(--text-2);font-size:15px;line-height:1.8}
.xg-flow__intro .xg-badges{margin-top:22px}

.xg-steps{position:relative;display:grid;gap:16px}
.xg-steps::before{
  content:"";position:absolute;left:21px;top:14px;bottom:14px;width:1px;
  background:linear-gradient(180deg,rgba(25,200,216,.55),rgba(25,200,216,.05));
}
.xg-step{
  position:relative;padding:18px 20px 18px 62px;
  border:1px solid var(--line);border-radius:14px;
  background:var(--surface-solid);
  transition:border-color .26s ease,transform .26s ease;
}
.xg-step:hover{border-color:var(--line-strong);transform:translateX(3px)}
.xg-step__no{
  position:absolute;left:12px;top:16px;
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  font-family:var(--font-num);font-size:13px;font-weight:600;color:var(--accent);
  background:rgba(11,21,36,.95);border:1px solid var(--line-strong);
}
.xg-step h3{font-size:16px;font-weight:600;margin-bottom:4px}
.xg-step p{font-size:14px;line-height:1.7;color:var(--text-2)}

/* ============ 记录查询 ============ */
.xg-record{display:grid;grid-template-columns:7fr 5fr;gap:40px;align-items:start}
.xg-record__list{display:grid;gap:12px}
.xg-record__item{
  display:flex;align-items:center;gap:16px;
  padding:16px 20px;border:1px solid var(--line);border-radius:14px;
  background:var(--surface-solid);
  transition:border-color .24s ease,background .24s ease;
}
.xg-record__item:hover{border-color:var(--line-strong);background:rgba(25,200,216,.06)}
.xg-record__item i{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:rgba(25,200,216,.1);color:var(--primary);font-size:15px;flex-shrink:0;
}
.xg-record__item b{display:block;font-size:15px;font-weight:600}
.xg-record__item span{display:block;font-size:13px;color:var(--text-3);line-height:1.6;margin-top:2px}
.xg-record__item em{margin-left:auto;font-style:normal;font-family:var(--font-num);font-size:12px;color:var(--accent);white-space:nowrap}

.xg-aside{
  border:1px solid var(--line);border-radius:var(--r-card);
  background:var(--surface);padding:24px;
  box-shadow:var(--sh-card);
  position:sticky;top:96px;
}
.xg-aside h3{font-size:17px;margin-bottom:14px}
.xg-aside ul{display:grid;gap:12px;margin-bottom:22px}
.xg-aside li{display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7}
.xg-aside li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary);margin-top:9px;flex-shrink:0;box-shadow:0 0 10px rgba(25,200,216,.6)}
.xg-aside .xg-btn{width:100%}
.xg-aside__note{margin-top:14px;font-size:12.5px;color:var(--text-3);line-height:1.7}

/* ============ FAQ ============ */
.xg-acc{display:grid;gap:12px;max-width:900px;margin:0 auto}
.xg-acc__item{
  border:1px solid var(--line);border-radius:14px;
  background:var(--surface);overflow:hidden;
  transition:border-color .26s ease;
}
.xg-acc__item.is-open{border-color:var(--line-strong)}
.xg-acc__q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:18px 20px;background:transparent;border:0;
  color:var(--text-1);font-size:17px;font-weight:600;text-align:left;line-height:1.55;
  position:relative;
}
.xg-acc__q::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:2px;border-radius:2px;
  background:var(--primary);opacity:0;transition:opacity .26s ease;
}
.xg-acc__item.is-open .xg-acc__q::before{opacity:1}
.xg-acc__icon{
  width:20px;height:20px;flex-shrink:0;position:relative;
  transition:transform .26s ease;
}
.xg-acc__icon::before,
.xg-acc__icon::after{
  content:"";position:absolute;background:var(--primary);border-radius:2px;
}
.xg-acc__icon::before{left:0;right:0;top:9px;height:2px}
.xg-acc__icon::after{top:0;bottom:0;left:9px;width:2px;transition:opacity .26s ease,transform .26s ease}
.xg-acc__item.is-open .xg-acc__icon{transform:rotate(180deg)}
.xg-acc__item.is-open .xg-acc__icon::after{opacity:0;transform:scaleY(.2)}
.xg-acc__a{max-height:0;overflow:hidden;transition:max-height .26s ease}
.xg-acc__a p{padding:0 20px 20px 20px;font-size:14px;line-height:1.85;color:var(--text-2)}

/* ============ CTA ============ */
.xg-cta{
  border:1px solid var(--line);border-radius:20px;
  background:
    radial-gradient(520px 240px at 8% 0%,rgba(25,200,216,.16),transparent 70%),
    var(--surface);
  backdrop-filter:blur(12px);
  padding:44px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap;
}
.xg-cta h2{font-size:clamp(20px,2.4vw,27px);line-height:1.35}
.xg-cta p{margin-top:10px;color:var(--text-2);font-size:15px;max-width:560px}
.xg-cta__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============ 页脚 ============ */
.xg-footer{
  position:relative;z-index:1;
  background:var(--bg-1);
  padding-top:64px;
}
.xg-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,rgba(25,200,216,0),rgba(25,200,216,.65),rgba(25,200,216,0));
}
.xg-footer__grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:44px}
.xg-footer__desc{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.75;max-width:300px}
.xg-footer h4{font-size:15px;font-weight:600;margin-bottom:18px;color:var(--text-1)}
.xg-footer__links{display:grid;gap:11px}
.xg-footer__links a{font-size:14px;color:var(--text-2);transition:color .2s ease}
.xg-footer__links a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.xg-footer__info{display:grid;gap:11px;font-size:13.5px;color:var(--text-3);line-height:1.7}
.xg-footer__bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  border-top:1px solid var(--line);padding:20px 0 26px;
  font-size:13px;color:var(--text-3);
}
.xg-totop{
  width:36px;height:36px;border-radius:50%;
  background:transparent;border:1px solid var(--line-strong);color:var(--text-2);
  font-size:14px;line-height:1;
  transition:all .24s ease;
}
.xg-totop:hover{color:var(--primary);border-color:var(--primary);background:rgba(25,200,216,.08);transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1199px){
  :root{--sec-gap:88px}
  .xg-gallery{grid-auto-rows:180px}
}

@media (max-width:991px){
  :root{--sec-gap:68px}
  .container{padding:0 16px}
  .xg-burger{display:block;margin-left:auto}
  .xg-header__cta{display:none}
  .xg-nav{
    position:fixed;top:0;right:0;bottom:0;z-index:1200;
    width:min(320px,86vw);
    margin-left:0;
    padding:88px 18px 32px;
    flex-direction:column;align-items:stretch;gap:6px;
    background:rgba(11,21,36,.97);
    backdrop-filter:blur(16px);
    border-left:1px solid var(--line);
    transform:translateX(105%);
    transition:transform .3s ease;
    overflow-y:auto;
  }
  .xg-nav.is-open{transform:translateX(0)}
  .xg-nav .xg-chip{
    height:44px;justify-content:flex-start;border-radius:10px;
    padding:0 16px;border-left:3px solid transparent;font-size:15px;
  }
  .xg-nav .xg-chip.is-active{border-left-color:var(--primary);background:rgba(25,200,216,.09)}
  .xg-nav .xg-chip.is-active::after{display:none}

  .xg-gallery{grid-template-columns:repeat(2,minmax(0,1fr));grid-auto-rows:170px;gap:14px}
  .xg-tile--lead{grid-column:span 2;grid-row:span 2}

  .xg-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .xg-stat:nth-child(2){border-right:0}
  .xg-stat:nth-child(1),.xg-stat:nth-child(2){border-bottom:1px solid var(--line)}

  .xg-points{grid-template-columns:1fr;gap:0}
  .xg-flow{grid-template-columns:1fr;gap:34px}
  .xg-record{grid-template-columns:1fr;gap:28px}
  .xg-aside{position:static}
  .xg-cta{padding:32px 24px}
  .xg-footer__grid{grid-template-columns:1fr 1fr;gap:32px}
}

@media (max-width:767px){
  .xg-hero__inner{padding:24px 0 40px}
  .xg-lead{font-size:15.5px}
  .xg-hero__meta{gap:18px}
  .xg-section__head{margin-bottom:28px;align-items:flex-start}
  .xg-gallery{grid-template-columns:1fr;grid-auto-rows:216px}
  .xg-tile--lead{grid-column:span 1;grid-row:span 2}
  .xg-tile__desc{max-height:78px;opacity:1;margin-top:2px}
  .xg-acc__q{font-size:16px;padding:16px}
  .xg-acc__a p{padding:0 16px 18px 16px}
  .xg-footer__grid{grid-template-columns:1fr}
  .xg-footer__bottom{flex-direction:column;align-items:flex-start;gap:12px}
}

@media (max-width:575px){
  .xg-stats{grid-template-columns:1fr}
  .xg-stat{border-right:0;border-bottom:1px solid var(--line)}
  .xg-stat:last-child{border-bottom:0}
  .xg-cta__actions{width:100%}
  .xg-cta__actions .xg-btn{flex:1 1 100%}
  .xg-record__item{flex-wrap:wrap;row-gap:8px}
  .xg-record__item em{margin-left:54px}
}

@media (hover:none){
  .xg-tile__desc{max-height:78px;opacity:1}
  .xg-tile:hover{transform:none}
}