/* roulang page: index */
:root{
  --ag-bg:#0B0F0D;--ag-bg-soft:#101714;--ag-surface:#141C18;--ag-surface-2:#1A241F;
  --ag-line:rgba(255,255,255,.08);--ag-line-strong:rgba(255,255,255,.16);
  --ag-primary:#12E0A6;--ag-primary-dim:#0FB98A;--ag-secondary:#D6FF4B;--ag-accent:#FF6A2B;
  --ag-text:#F1F7F4;--ag-text-sub:#A7BAB1;--ag-text-mute:#6E8078;
  --ag-grad-energy:linear-gradient(100deg,#12E0A6,#D6FF4B);
  --ag-grad-panel:linear-gradient(180deg,rgba(18,224,166,.10),transparent);
  --r-card:18px;--r-btn:14px;
  --sh-rest:0 0 0 1px rgba(255,255,255,.06);
  --sh-hover:0 18px 40px -18px rgba(18,224,166,.45),0 0 0 1px rgba(18,224,166,.35);
  --sh-glow:0 0 24px rgba(18,224,166,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;background:var(--ag-bg);color:var(--ag-text-sub);
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font:inherit}
button{background:none;border:0;cursor:pointer}
h1,h2,h3,h4{margin:0;color:var(--ag-text);letter-spacing:0}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--ag-primary);outline-offset:2px}
::selection{background:rgba(18,224,166,.3);color:#fff}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0F0D}
::-webkit-scrollbar-thumb{background:#1E2B25;border-radius:999px;border:2px solid #0B0F0D}
::-webkit-scrollbar-thumb:hover{background:#2A3B33}

.container-x{width:100%;max-width:1240px;margin-inline:auto;padding-inline:20px}
@media(min-width:768px){.container-x{padding-inline:24px}}
@media(min-width:1024px){.container-x{padding-inline:32px}}
.section{padding-block:56px}
@media(min-width:768px){.section{padding-block:72px}}
@media(min-width:1024px){.section{padding-block:104px}}

/* Header */
.site-header{position:fixed;top:0;left:0;right:0;z-index:60;background:transparent;border-bottom:1px solid transparent;transition:background .22s ease-out,border-color .22s ease-out,backdrop-filter .22s ease-out}
.site-header.is-stuck{background:rgba(16,23,20,.9);border-bottom-color:var(--ag-line);backdrop-filter:blur(12px)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;height:72px;gap:20px}
.logo-mark{width:34px;height:34px;border-radius:11px;background:var(--ag-grad-energy);display:inline-flex;align-items:center;justify-content:center;flex:0 0 34px;box-shadow:var(--sh-glow)}
.logo-mark span{width:12px;height:12px;border-radius:4px;background:#0B0F0D;transform:rotate(45deg)}
.nav-links{display:none;align-items:center;gap:6px}
@media(min-width:1024px){.nav-links{display:flex}}
.nav-link{display:inline-flex;align-items:center;height:38px;padding:0 14px;border-radius:999px;font-size:15px;color:var(--ag-text-sub);transition:color .18s ease-out,background .18s ease-out}
.nav-link:hover{color:var(--ag-text);background:rgba(18,224,166,.10)}
.nav-link.is-active{color:var(--ag-primary);background:rgba(18,224,166,.14);font-weight:700}
.nav-cta{display:none}
@media(min-width:1024px){.nav-cta{display:inline-flex}}
.burger{display:inline-flex;width:44px;height:44px;align-items:center;justify-content:center;border-radius:12px;border:1px solid var(--ag-line);color:var(--ag-text)}
@media(min-width:1024px){.burger{display:none}}
.burger i{display:block;width:18px;height:2px;background:currentColor;border-radius:2px;position:relative}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;border-radius:2px}
.burger i::before{top:-6px}
.burger i::after{top:6px}
.drawer-mask{position:fixed;inset:0;background:rgba(6,9,8,.7);opacity:0;pointer-events:none;transition:opacity .22s ease-out;z-index:70}
.drawer-mask.is-open{opacity:1;pointer-events:auto}
.drawer{position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);background:var(--ag-bg-soft);border-left:1px solid var(--ag-line);z-index:80;transform:translateX(102%);transition:transform .26s ease-out;padding:22px;display:flex;flex-direction:column;gap:8px;overflow-y:auto}
.drawer.is-open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.drawer-link{display:flex;align-items:center;justify-content:space-between;padding:14px 14px;border-radius:12px;color:var(--ag-text-sub);border:1px solid transparent;transition:all .18s ease-out}
.drawer-link:hover{background:rgba(18,224,166,.08);color:var(--ag-text);border-color:var(--ag-line)}
.drawer-link.is-active{color:var(--ag-primary);background:rgba(18,224,166,.12);font-weight:700}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:48px;padding:0 26px;border-radius:var(--r-btn);font-size:15px;font-weight:800;letter-spacing:0;transition:transform .18s ease-out,box-shadow .18s ease-out,background .18s ease-out,color .18s ease-out,border-color .18s ease-out;white-space:nowrap}
.btn-primary{background:var(--ag-grad-energy);color:#062018;box-shadow:var(--sh-glow)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{background:transparent;color:var(--ag-primary);border:1px solid var(--ag-primary)}
.btn-ghost:hover{background:rgba(18,224,166,.12)}
.btn-ghost:active{transform:translateY(1px)}
.btn-quiet{background:transparent;color:var(--ag-text-sub);border:1px solid var(--ag-line-strong);font-weight:700}
.btn-quiet:hover{color:var(--ag-text);border-color:var(--ag-primary);background:rgba(18,224,166,.08)}
.btn-sm{height:42px;padding:0 20px;font-size:14px}
.link-text{display:inline-flex;align-items:center;gap:6px;color:var(--ag-primary);font-weight:700;font-size:15px;position:relative}
.link-text::after{content:"";position:absolute;left:0;right:22px;bottom:-3px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .2s ease-out}
.link-text:hover::after{transform:scaleX(1)}

/* Badges */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;border-radius:999px;font-size:12px;font-weight:700;line-height:1;letter-spacing:.02em}
.badge-primary{background:rgba(18,224,166,.14);color:var(--ag-primary)}
.badge-lime{background:rgba(214,255,75,.14);color:var(--ag-secondary)}
.badge-accent{background:rgba(255,106,43,.16);color:var(--ag-accent)}
.badge-mute{background:rgba(255,255,255,.07);color:var(--ag-mute)}

/* Cards */
.card{background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--r-card);transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--sh-hover)}
.card-flat:hover{transform:none;box-shadow:none;border-color:var(--ag-line-strong)}
.thumb{position:relative;overflow:hidden;border-radius:14px;background:var(--ag-surface-2)}
.thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.card:hover .thumb img{transform:scale(1.03)}

/* Hero */
.hero-mask{background:
  radial-gradient(60% 70% at 18% 30%,rgba(18,224,166,.16),transparent 62%),
  linear-gradient(180deg,rgba(11,15,13,.86) 0%,rgba(11,15,13,.62) 38%,rgba(11,15,13,.96) 100%)}
.hero-grid-lines{position:absolute;inset:0;background-image:linear-gradient(90deg,var(--ag-line) 1px,transparent 1px);background-size:120px 100%;opacity:.5;pointer-events:none}
.stat-bar{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0;border:1px solid var(--ag-line);border-radius:var(--r-card);background:rgba(16,23,20,.72);backdrop-filter:blur(8px);overflow:hidden}
@media(min-width:768px){.stat-bar{grid-template-columns:repeat(4,minmax(0,1fr))}}
.stat-cell{padding:18px 20px;border-right:1px solid var(--ag-line);border-bottom:1px solid var(--ag-line)}
.stat-cell:nth-child(2n){border-right:0}
@media(min-width:768px){
  .stat-cell{border-bottom:0}
  .stat-cell:nth-child(2n){border-right:1px solid var(--ag-line)}
  .stat-cell:last-child{border-right:0}
}
.stat-num{font-size:30px;font-weight:900;color:var(--ag-text);line-height:1.1}
@media(min-width:1024px){.stat-num{font-size:38px}}
.stat-label{font-size:13px;color:var(--ag-text-mute);margin-top:6px;letter-spacing:.02em}

/* Play steps */
.play-card{background:linear-gradient(180deg,rgba(18,224,166,.06),transparent 70%),var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--r-card);padding:24px;display:flex;gap:20px;align-items:flex-start;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.play-card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--sh-hover)}
.play-num{font-size:34px;font-weight:900;line-height:1;background:var(--ag-grad-energy);-webkit-background-clip:text;background-clip:text;color:transparent;min-width:64px}
@media(min-width:768px){.play-num{font-size:40px}}

/* Reward */
.reward-value{font-size:40px;font-weight:900;line-height:1;color:var(--ag-primary)}
@media(min-width:1024px){.reward-value{font-size:52px}}
.reward-card{background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--r-card);overflow:hidden;display:flex;flex-direction:column;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.reward-card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--sh-hover)}

/* Progress */
.progress-track{height:8px;border-radius:999px;background:var(--ag-surface-2);overflow:hidden}
.progress-fill{height:100%;border-radius:999px;background:var(--ag-grad-energy);width:0;transition:width .6s ease-out}
.node{display:flex;align-items:flex-start;gap:14px}
.node-dot{width:16px;height:16px;border-radius:50%;flex:0 0 16px;margin-top:5px}
.node-done{background:var(--ag-primary);box-shadow:0 0 14px rgba(18,224,166,.6)}
.node-active{background:transparent;border:2px solid var(--ag-primary);animation:pulseRing 2s ease-out infinite}
.node-idle{background:#2B382F;border:1px solid var(--ag-line-strong)}

/* CMS list */
.post-card{display:flex;flex-direction:column;background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--r-card);overflow:hidden;transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out}
.post-card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--sh-hover)}
.post-card:hover .thumb img{transform:scale(1.03)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* Empty state */
.empty-state{min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:12px;border:1px dashed var(--ag-line-strong);border-radius:var(--r-card);background:rgba(20,28,24,.5);padding:32px}
.empty-ring{width:62px;height:62px;border-radius:50%;border:2px solid rgba(18,224,166,.4);display:flex;align-items:center;justify-content:center}
.empty-ring span{width:16px;height:16px;border-radius:50%;background:rgba(18,224,166,.5)}

/* FAQ */
.faq-item{border:1px solid var(--ag-line);border-radius:var(--r-card);background:var(--ag-surface);overflow:hidden;transition:border-color .2s ease-out,background .2s ease-out}
.faq-item+.faq-item{margin-top:12px}
.faq-item[open]{border-color:rgba(18,224,166,.35);box-shadow:inset 2px 0 0 var(--ag-primary)}
.faq-q{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:56px;padding:16px 24px;cursor:pointer;font-weight:700;color:var(--ag-text);list-style:none;font-size:16px}
.faq-q::-webkit-details-marker{display:none}
.faq-icon{position:relative;width:18px;height:18px;flex:0 0 18px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--ag-primary);border-radius:2px;transition:transform .2s ease-out,opacity .2s ease-out}
.faq-icon::before{left:0;top:8px;width:18px;height:2px}
.faq-icon::after{left:8px;top:0;width:2px;height:18px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-a{padding:18px 24px 22px;color:var(--ag-text-sub);font-size:15px;line-height:1.85;border-top:1px solid var(--ag-line)}

/* CTA strip */
.cta-strip{position:relative;overflow:hidden;border-radius:22px;border:1px solid rgba(18,224,166,.3);background:linear-gradient(100deg,rgba(18,224,166,.16),rgba(214,255,75,.07) 55%,rgba(20,28,24,.9));padding:32px}
@media(min-width:768px){.cta-strip{padding:44px}}
.cta-strip::after{content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;background:radial-gradient(circle,rgba(18,224,166,.28),transparent 70%)}

/* Bottom floating CTA */
.bottom-cta{position:fixed;left:16px;right:16px;bottom:16px;z-index:55;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 16px;border-radius:16px;background:rgba(16,23,20,.94);border:1px solid var(--ag-line-strong);backdrop-filter:blur(10px);transform:translateY(140%);transition:transform .25s ease-out}
.bottom-cta.is-show{transform:translateY(0)}
@media(min-width:1024px){.bottom-cta{display:none}}

/* Footer */
.site-footer{background:var(--ag-bg-soft);border-top:1px solid var(--ag-line);margin-top:0}
.footer-link{color:var(--ag-text-sub);font-size:14px;transition:color .18s ease-out}
.footer-link:hover{color:var(--ag-primary)}
.footer-grid{display:grid;gap:32px;grid-template-columns:1fr}
@media(min-width:768px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1fr}}
.divider{height:1px;background:var(--ag-line);width:100%}

.elevate{animation:riseIn .6s ease-out both}
@media (prefers-reduced-motion: reduce){
  *{animation:none !important;transition:none !important}
  html{scroll-behavior:auto}
}

/* roulang page: category1 */
:root{
    --ag-bg:#0B0F0D;
    --ag-bg-soft:#101714;
    --ag-surface:#141C18;
    --ag-surface-2:#1A241F;
    --ag-line:rgba(255,255,255,.08);
    --ag-line-strong:rgba(255,255,255,.16);
    --ag-primary:#12E0A6;
    --ag-primary-dim:#0FB98A;
    --ag-secondary:#D6FF4B;
    --ag-accent:#FF6A2B;
    --ag-text:#F1F7F4;
    --ag-text-sub:#A7BAB1;
    --ag-text-mute:#6E8078;
    --ag-grad-energy:linear-gradient(100deg,#12E0A6,#D6FF4B);
    --ag-grad-panel:linear-gradient(180deg,rgba(18,224,166,.10),transparent);
    --r-card:18px;
    --r-btn:14px;
    --sh-card:0 0 0 1px rgba(255,255,255,.06);
    --sh-hover:0 18px 40px -18px rgba(18,224,166,.45),0 0 0 1px rgba(18,224,166,.35);
    --sh-glow:0 0 24px rgba(18,224,166,.35);
  }

  *,*::before,*::after{box-sizing:border-box}
  html{scroll-behavior:smooth;scroll-padding-top:96px}
  body{
    margin:0;
    background:var(--ag-bg);
    color:var(--ag-text-sub);
    font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
    font-size:16px;
    line-height:1.8;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  h1,h2,h3,h4{color:var(--ag-text);margin:0}
  h1{font-size:clamp(28px,4.4vw,44px);line-height:1.12;font-weight:900;letter-spacing:-.02em}
  h2{font-size:clamp(22px,2.6vw,32px);line-height:1.2;font-weight:800}
  h3{font-size:clamp(17px,1.6vw,20px);line-height:1.35;font-weight:700}
  p{margin:0}
  a{color:inherit;text-decoration:none;transition:color .2s ease-out}
  img{display:block;max-width:100%}
  button{font-family:inherit}
  ul{margin:0;padding:0;list-style:none}
  .num{font-variant-numeric:tabular-nums}
  :where(a,button,summary,input,textarea,select):focus-visible{outline:2px solid var(--ag-primary);outline-offset:2px;border-radius:8px}

  /* 容器 */
  .container-x{
    width:100%;
    max-width:1240px;
    margin:0 auto;
    padding-left:32px;
    padding-right:32px;
  }
  @media (max-width:1023px){.container-x{padding-left:24px;padding-right:24px}}
  @media (max-width:639px){.container-x{padding-left:20px;padding-right:20px}}

  /* 导航 */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:60;
    background:transparent;
    border-bottom:1px solid transparent;
    transition:background-color .22s ease-out,border-color .22s ease-out,backdrop-filter .22s ease-out;
  }
  .site-header.is-stuck{
    background:rgba(16,23,20,.9);
    -webkit-backdrop-filter:blur(14px);
    backdrop-filter:blur(14px);
    border-bottom-color:var(--ag-line);
  }
  .nav-bar{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
  .logo-mark{
    width:34px;height:34px;border-radius:11px;
    background:var(--ag-grad-energy);
    display:grid;place-items:center;position:relative;
    box-shadow:var(--sh-glow);flex:none;
  }
  .logo-mark span{width:12px;height:12px;border-radius:4px;background:#0B0F0D;transform:rotate(45deg)}
  .nav-links{display:flex;align-items:center;gap:6px}
  .nav-link{
    position:relative;
    display:inline-flex;align-items:center;
    height:38px;padding:0 14px;border-radius:999px;
    font-size:15px;color:var(--ag-text-sub);
    transition:color .2s ease-out,background-color .2s ease-out;
  }
  .nav-link:hover{color:var(--ag-text);background:rgba(255,255,255,.05)}
  .nav-link.is-active{
    color:var(--ag-primary);
    background:rgba(18,224,166,.14);
    font-weight:700;
  }
  .nav-link.is-active::after{
    content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
    border-radius:2px;background:var(--ag-grad-energy);
  }
  .burger{
    display:none;width:44px;height:44px;border-radius:12px;
    border:1px solid var(--ag-line-strong);
    background:rgba(255,255,255,.03);
    position:relative;cursor:pointer;
    transition:background-color .2s ease-out,border-color .2s ease-out;
  }
  .burger:hover{background:rgba(18,224,166,.1);border-color:rgba(18,224,166,.4)}
  .burger i,.burger i::before,.burger i::after{
    position:absolute;left:12px;width:20px;height:2px;border-radius:2px;
    background:var(--ag-text);transition:transform .2s ease-out;
  }
  .burger i{top:21px}
  .burger i::before,.burger i::after{content:"";left:0}
  .burger i::before{top:-6px}
  .burger i::after{top:6px}

  /* 抽屉 */
  .drawer-mask{
    position:fixed;inset:0;z-index:70;
    background:rgba(5,8,7,.62);
    -webkit-backdrop-filter:blur(2px);
    backdrop-filter:blur(2px);
    opacity:0;pointer-events:none;transition:opacity .24s ease-out;
  }
  .drawer-mask.is-open{opacity:1;pointer-events:auto}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;z-index:80;
    width:min(320px,86vw);
    padding:22px;
    background:var(--ag-bg-soft);
    border-left:1px solid var(--ag-line);
    transform:translateX(105%);
    transition:transform .24s ease-out;
    overflow-y:auto;
  }
  .drawer.is-open{transform:none}
  .drawer-close{
    width:38px;height:38px;border-radius:11px;font-size:20px;line-height:1;
    border:1px solid var(--ag-line-strong);background:transparent;color:var(--ag-text-sub);
    cursor:pointer;transition:color .2s,background-color .2s;
  }
  .drawer-close:hover{color:var(--ag-text);background:rgba(255,255,255,.06)}
  .drawer-link{
    display:block;padding:12px 14px;border-radius:12px;
    font-size:15px;color:var(--ag-text-sub);
    transition:color .2s,background-color .2s;
  }
  .drawer-link:hover{color:var(--ag-text);background:rgba(255,255,255,.05)}
  .drawer-link.is-active{color:var(--ag-primary);background:rgba(18,224,166,.12);font-weight:700}

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 22px;border-radius:var(--r-btn);
    font-size:15px;font-weight:800;
    border:1px solid transparent;cursor:pointer;
    transition:transform .2s ease-out,box-shadow .2s ease-out,background-color .2s ease-out,color .2s ease-out,border-color .2s ease-out;
    white-space:nowrap;
  }
  .btn-primary{background:var(--ag-grad-energy);color:#07120D;box-shadow:var(--sh-glow)}
  .btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
  .btn-primary:active{transform:translateY(1px)}
  .btn-outline{background:transparent;border-color:rgba(18,224,166,.55);color:var(--ag-primary)}
  .btn-outline:hover{background:rgba(18,224,166,.12);border-color:var(--ag-primary)}
  .btn-quiet{background:rgba(255,255,255,.03);border-color:var(--ag-line-strong);color:var(--ag-text-sub)}
  .btn-quiet:hover{color:var(--ag-text);border-color:rgba(18,224,166,.45);background:rgba(18,224,166,.1)}
  .btn-sm{height:40px;padding:0 16px;font-size:14px}
  .btn-block{width:100%}
  .btn[disabled],.btn:disabled{opacity:.45;cursor:not-allowed;transform:none;filter:none}

  /* 徽章 */
  .badge{
    display:inline-flex;align-items:center;height:24px;padding:0 10px;
    border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.02em;
    white-space:nowrap;
  }
  .badge-primary{background:rgba(18,224,166,.14);color:var(--ag-primary)}
  .badge-lime{background:rgba(214,255,75,.14);color:var(--ag-secondary)}
  .badge-accent{background:rgba(255,106,43,.14);color:var(--ag-accent)}
  .badge-mute{background:rgba(255,255,255,.06);color:var(--ag-text-mute)}

  /* 卡片 */
  .card{
    background:var(--ag-surface);
    border:1px solid var(--ag-line);
    border-radius:var(--r-card);
    padding:24px;
    box-shadow:var(--sh-card);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--sh-hover)}
  .card-flat:hover{transform:none;border-color:var(--ag-line);box-shadow:var(--sh-card)}
  .card-sm{padding:20px}
  .divider{height:1px;background:var(--ag-line);width:100%}

  /* 面包屑 */
  .crumb{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--ag-text-mute);letter-spacing:.02em}
  .crumb a{color:var(--ag-text-mute)}
  .crumb a:hover{color:var(--ag-primary)}
  .crumb-current{color:var(--ag-text-sub)}

  /* 分类头图 */
  .cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--ag-line);background:var(--ag-bg)}
  .cat-hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    opacity:.42;
  }
  .cat-hero-veil{
    position:absolute;inset:0;
    background:
      radial-gradient(700px 260px at 16% 12%,rgba(18,224,166,.20),transparent 70%),
      linear-gradient(180deg,rgba(11,15,13,.72) 0%,rgba(11,15,13,.93) 62%,rgba(11,15,13,.99) 100%);
  }
  .cat-hero h1{max-width:820px;margin-top:18px}
  .cat-lede{
    max-width:640px;margin-top:16px;
    font-size:clamp(15px,1.5vw,17px);line-height:1.85;color:var(--ag-text-sub);
  }

  /* 双栏布局 */
  .cat-layout{display:grid;grid-template-columns:264px 1fr;gap:40px;align-items:start}
  .anchor-nav{position:sticky;top:96px;background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--r-card);padding:20px}
  .anchor-title{font-size:13px;font-weight:700;color:var(--ag-text);letter-spacing:.08em;margin-bottom:12px}
  .anchor-list{display:flex;flex-direction:column;gap:4px}
  .anchor-link{
    display:flex;align-items:center;gap:10px;
    padding:10px 12px;border-radius:12px;
    font-size:14.5px;color:var(--ag-text-sub);
    transition:color .2s,background-color .2s;
  }
  .anchor-link::before{
    content:"";width:6px;height:6px;border-radius:999px;
    background:rgba(255,255,255,.18);flex:none;transition:background-color .2s,box-shadow .2s;
  }
  .anchor-link:hover{color:var(--ag-text);background:rgba(255,255,255,.04)}
  .anchor-link.is-current{color:var(--ag-primary);background:rgba(18,224,166,.1);font-weight:700}
  .anchor-link.is-current::before{background:var(--ag-primary);box-shadow:0 0 10px rgba(18,224,166,.7)}

  .cat-main{min-width:0}
  .sec{padding-top:56px}
  .sec:first-child{padding-top:0}
  .sec-head{margin-bottom:30px}
  .sec-head p{margin-top:12px;max-width:720px;font-size:15px;color:var(--ag-text-sub)}

  /* 数据条 */
  .stat-strip{
    display:grid;grid-template-columns:repeat(4,1fr);
    border:1px solid var(--ag-line);border-radius:var(--r-card);
    background:var(--ag-surface);overflow:hidden;margin-bottom:32px;
  }
  .stat{padding:22px 20px;border-right:1px solid var(--ag-line)}
  .stat:last-child{border-right:none}
  .stat-num{
    display:block;font-size:clamp(26px,3.2vw,40px);font-weight:900;line-height:1.1;
    font-variant-numeric:tabular-nums;
    background:var(--ag-grad-energy);
    -webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .stat-label{display:block;margin-top:6px;font-size:13px;color:var(--ag-text-mute);letter-spacing:.02em}

  /* 快速入口卡 */
  .quick-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:28px}
  .quick-card{
    display:flex;flex-direction:column;gap:10px;
    background:linear-gradient(180deg,rgba(18,224,166,.08),rgba(20,28,24,0));
    background-color:var(--ag-surface);
    border:1px solid var(--ag-line);border-radius:var(--r-card);
    padding:22px;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .quick-card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--sh-hover)}
  .quick-card strong{color:var(--ag-text);font-size:16px;font-weight:800}
  .quick-card span{font-size:14px;line-height:1.75;color:var(--ag-text-sub)}
  .quick-card em{
    font-style:normal;font-size:13px;font-weight:700;color:var(--ag-primary);
    margin-top:auto;display:inline-flex;align-items:center;gap:6px;
  }
  .quick-card:hover em{text-decoration:underline;text-underline-offset:4px}

  /* 步骤时间轴 */
  .steps{position:relative;padding-left:38px}
  .steps::before{content:"";position:absolute;left:14px;top:10px;bottom:14px;width:1px;background:var(--ag-line-strong)}
  .step{position:relative;padding-bottom:26px}
  .step:last-child{padding-bottom:0}
  .step-dot{
    position:absolute;left:-38px;top:0;
    width:29px;height:29px;border-radius:999px;
    display:grid;place-items:center;
    font-size:12px;font-weight:800;font-variant-numeric:tabular-nums;
    background:var(--ag-surface-2);border:1px solid var(--ag-line-strong);color:var(--ag-text-sub);
  }
  .step.is-done .step-dot{
    background:var(--ag-grad-energy);color:#07120D;border-color:transparent;
    box-shadow:0 0 16px rgba(18,224,166,.45);
  }
  .step h3{margin-bottom:8px}
  .step p{font-size:14.5px;color:var(--ag-text-sub);max-width:640px}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}

  /* 表格 */
  .table-wrap{
    border:1px solid var(--ag-line);border-radius:16px;
    overflow-x:auto;background:var(--ag-surface);
  }
  .data-table{width:100%;min-width:680px;border-collapse:collapse;font-size:14px}
  .data-table th{
    background:var(--ag-surface-2);color:var(--ag-text);
    font-size:13px;font-weight:700;text-align:left;
    padding:14px 16px;border-bottom:1px solid var(--ag-line);white-space:nowrap;
  }
  .data-table td{
    padding:14px 16px;color:var(--ag-text-sub);
    border-bottom:1px solid var(--ag-line);vertical-align:top;
  }
  .data-table tbody tr:nth-child(even) td{background:rgba(255,255,255,.02)}
  .data-table tbody tr:last-child td{border-bottom:none}
  .data-table tbody tr:hover td{background:rgba(18,224,166,.06)}
  .data-table td strong{color:var(--ag-text)}

  /* 图文交替 */
  .split{display:grid;grid-template-columns:1.05fr 1fr;gap:30px;align-items:center;margin-top:32px}
  .split.reverse .split-media{order:2}
  .split-img{
    width:100%;aspect-ratio:16/10;object-fit:cover;
    border-radius:14px;border:1px solid var(--ag-line);
    transition:transform .3s ease-out;
  }
  .split:hover .split-img{transform:scale(1.02)}
  .split-body h3{margin-bottom:12px}
  .split-body p{font-size:14.8px;color:var(--ag-text-sub)}
  .spec-list{margin-top:16px;display:grid;gap:10px}
  .spec-list li{display:flex;gap:10px;font-size:14px;color:var(--ag-text-sub)}
  .spec-list li::before{content:"";width:6px;height:6px;margin-top:10px;border-radius:999px;background:var(--ag-primary);flex:none}

  /* FAQ */
  .faq-list{display:grid;gap:12px}
  .faq-item{
    position:relative;overflow:hidden;
    background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:14px;
    transition:border-color .2s ease-out;
  }
  .faq-item:hover{border-color:rgba(18,224,166,.3)}
  .faq-item summary{
    position:relative;list-style:none;cursor:pointer;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:56px;padding:16px 20px;
    font-size:15.5px;font-weight:700;color:var(--ag-text);
  }
  .faq-item summary::-webkit-details-marker{display:none}
  .faq-item summary::after{
    content:"+";font-size:20px;font-weight:700;color:var(--ag-primary);
    line-height:1;transition:transform .2s ease-out;
  }
  .faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
  .faq-item[open]::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:var(--ag-primary)}
  .faq-body{padding:0 20px 20px;font-size:14.6px;color:var(--ag-text-sub)}

  /* CTA 条 */
  .cta-band{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
    padding:32px;
    border-radius:var(--r-card);
    border:1px solid rgba(18,224,166,.28);
    background:
      radial-gradient(500px 200px at 12% 20%,rgba(18,224,166,.18),transparent 70%),
      linear-gradient(100deg,rgba(18,224,166,.14),rgba(214,255,75,.06) 60%,rgba(20,28,24,0)),
      var(--ag-surface);
  }
  .cta-band h2{margin-bottom:10px}
  .cta-band p{max-width:560px;font-size:14.8px;color:var(--ag-text-sub)}

  /* 相关阅读 */
  .read-more{
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
    margin-top:18px;padding:20px 22px;
    border:1px dashed var(--ag-line-strong);border-radius:14px;
    background:rgba(255,255,255,.02);
  }

  /* 页脚 */
  .site-footer{
    margin-top:96px;
    border-top:1px solid var(--ag-line);
    background:linear-gradient(180deg,rgba(18,224,166,.05),transparent 40%),var(--ag-bg-soft);
  }
  .footer-grid{display:grid;grid-template-columns:1.45fr 1fr 1fr 1.15fr;gap:32px}
  .footer-link{font-size:14px;color:var(--ag-text-sub)}
  .footer-link:hover{color:var(--ag-primary)}

  @media (max-width:1023px){
    .nav-links{display:none}
    .nav-cta{display:none}
    .burger{display:block}
    .cat-layout{grid-template-columns:1fr;gap:28px}
    .anchor-nav{position:static}
    .anchor-title{display:none}
    .anchor-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px}
    .anchor-link{white-space:nowrap;background:rgba(255,255,255,.03)}
    .quick-grid{grid-template-columns:repeat(2,1fr)}
    .split{grid-template-columns:1fr;gap:22px}
    .split.reverse .split-media{order:0}
    .footer-grid{grid-template-columns:repeat(2,1fr)}
    .site-footer{margin-top:72px}
  }
  @media (max-width:767px){
    .stat-strip{grid-template-columns:repeat(2,1fr)}
    .stat:nth-child(2n){border-right:none}
    .stat:nth-child(1),.stat:nth-child(2){border-bottom:1px solid var(--ag-line)}
    .quick-grid{grid-template-columns:1fr}
    .sec{padding-top:44px}
    .cta-band{padding:24px}
  }
  @media (max-width:639px){
    .footer-grid{grid-template-columns:1fr;gap:26px}
    .steps{padding-left:32px}
    .step-dot{left:-32px;width:26px;height:26px}
    .site-footer{margin-top:56px}
  }

  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto}
    *,*::before,*::after{animation:none !important;transition-duration:.001ms !important}
  }

/* roulang page: article */
:root{
  --ag-bg:#0B0F0D;
  --ag-bg-soft:#101714;
  --ag-surface:#141C18;
  --ag-surface-2:#1A241F;
  --ag-line:rgba(255,255,255,.08);
  --ag-line-strong:rgba(255,255,255,.16);
  --ag-primary:#12E0A6;
  --ag-primary-dim:#0FB98A;
  --ag-secondary:#D6FF4B;
  --ag-accent:#FF6A2B;
  --ag-text:#F1F7F4;
  --ag-text-sub:#A7BAB1;
  --ag-text-mute:#6E8078;
  --ag-grad-energy:linear-gradient(100deg,#12E0A6,#D6FF4B);
  --ag-grad-panel:linear-gradient(180deg,rgba(18,224,166,.10),transparent);
  --ag-radius-card:18px;
  --ag-radius-btn:14px;
  --ag-shadow-shell:0 0 0 1px rgba(255,255,255,.06);
  --ag-shadow-hover:0 18px 40px -18px rgba(18,224,166,.45),0 0 0 1px rgba(18,224,166,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.ag-body{
  margin:0;
  background:var(--ag-bg);
  color:var(--ag-text-sub);
  font-family:-apple-system,BlinkMacSystemFont,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;padding:0}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--ag-primary);outline-offset:2px}
::selection{background:rgba(18,224,166,.28);color:#F1F7F4}
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#0B0F0D}
::-webkit-scrollbar-thumb{background:#1F2A25;border-radius:999px;border:2px solid #0B0F0D}
::-webkit-scrollbar-thumb:hover{background:#2A3833}

.container-x{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media (min-width:768px){.container-x{padding:0 24px}}
@media (min-width:1024px){.container-x{padding:0 32px}}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:transparent;
  border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
}
.site-header.is-stuck{
  background:rgba(16,23,20,.9);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
  border-bottom-color:var(--ag-line);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.logo-mark{
  width:34px;height:34px;border-radius:11px;flex:none;
  background:var(--ag-grad-energy);
  display:inline-flex;align-items:center;justify-content:center;
  box-shadow:0 0 24px rgba(18,224,166,.35);
}
.logo-mark span{width:12px;height:12px;border-radius:4px;background:#0B0F0D;display:block;transform:rotate(45deg)}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-link{
  position:relative;display:inline-block;
  padding:6px 2px;
  font-size:15px;font-weight:600;color:var(--ag-text-sub);
  transition:color .2s ease;
}
.nav-link::after{
  content:"";position:absolute;left:0;right:0;bottom:-3px;height:2px;border-radius:2px;
  background:var(--ag-grad-energy);
  transform:scaleX(0);transform-origin:left;
  transition:transform .22s ease;
}
.nav-link:hover{color:var(--ag-text)}
.nav-link:hover::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--ag-primary)}
.nav-link.is-active::after{transform:scaleX(1)}
.nav-cta{white-space:nowrap}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--ag-line);background:rgba(255,255,255,.03);
  position:relative;align-items:center;justify-content:center;
  transition:border-color .2s ease,background .2s ease;
}
.burger:hover{border-color:var(--ag-line-strong);background:rgba(255,255,255,.06)}
.burger i{position:absolute;left:50%;top:50%;width:18px;height:2px;border-radius:2px;background:var(--ag-text);transform:translate(-50%,-50%)}
.burger i::before,.burger i::after{content:"";position:absolute;left:0;width:18px;height:2px;border-radius:2px;background:var(--ag-text);transition:transform .2s ease}
.burger i::before{top:-6px}
.burger i::after{top:6px}
@media (max-width:1023px){
  .nav-links{display:none}
  .burger{display:inline-flex}
  .nav-cta{display:none}
}

/* ---------- drawer ---------- */
.drawer{position:fixed;inset:0;z-index:90;pointer-events:none}
.drawer.is-open{pointer-events:auto}
.drawer-backdrop{position:absolute;inset:0;background:rgba(4,8,6,.72);opacity:0;transition:opacity .22s ease}
.drawer.is-open .drawer-backdrop{opacity:1}
.drawer-panel{
  position:absolute;top:0;right:0;height:100%;width:min(340px,86vw);
  display:flex;flex-direction:column;
  padding:24px 22px;overflow-y:auto;
  background:var(--ag-bg-soft);border-left:1px solid var(--ag-line);
  transform:translateX(100%);
  transition:transform .26s cubic-bezier(.22,.61,.36,1);
}
.drawer.is-open .drawer-panel{transform:translateX(0)}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--ag-line);
  display:inline-flex;align-items:center;justify-content:center;
  color:var(--ag-text-sub);font-size:18px;line-height:1;
  transition:color .2s ease,border-color .2s ease;
}
.drawer-close:hover{color:var(--ag-text);border-color:var(--ag-line-strong)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 16px;border-radius:14px;border:1px solid transparent;
  font-size:15px;font-weight:600;color:var(--ag-text-sub);
  transition:color .2s ease,background .2s ease,border-color .2s ease;
}
.drawer-link:hover{color:var(--ag-text);background:rgba(255,255,255,.03);border-color:var(--ag-line)}
.drawer-link.is-active{color:var(--ag-primary);background:rgba(18,224,166,.1);border-color:rgba(18,224,166,.3)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--ag-radius-btn);
  font-size:15px;font-weight:800;letter-spacing:.01em;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease,filter .2s ease;
}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-primary{background:var(--ag-grad-energy);color:#06120D;box-shadow:0 0 24px rgba(18,224,166,.35)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);filter:brightness(.96)}
.btn-primary:disabled{opacity:.5;cursor:not-allowed;box-shadow:none;transform:none}
.btn-ghost{background:transparent;border:1px solid rgba(18,224,166,.55);color:var(--ag-primary)}
.btn-ghost:hover{background:rgba(18,224,166,.12);transform:translateY(-1px)}
.btn-ghost:active{transform:translateY(1px)}
.btn-quiet{background:var(--ag-surface-2);border:1px solid var(--ag-line);color:var(--ag-text)}
.btn-quiet:hover{border-color:var(--ag-line-strong);background:#202B26}
.btn-quiet:active{transform:translateY(1px)}
.btn-link{display:inline-flex;align-items:center;gap:6px;color:var(--ag-primary);font-size:14px;font-weight:700;position:relative}
.btn-link::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform .22s ease}
.btn-link:hover::after{transform:scaleX(1)}
.btn-link:hover{color:var(--ag-secondary)}

/* ---------- badges ---------- */
.badge{
  display:inline-flex;align-items:center;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;letter-spacing:.02em;
  border:1px solid var(--ag-line);color:var(--ag-text-sub);background:rgba(255,255,255,.03);
}
.badge-primary{color:var(--ag-primary);background:rgba(18,224,166,.14);border-color:rgba(18,224,166,.28)}
.badge-lime{color:var(--ag-secondary);background:rgba(214,255,75,.12);border-color:rgba(214,255,75,.26)}
.badge-accent{color:var(--ag-accent);background:rgba(255,106,43,.12);border-color:rgba(255,106,43,.28)}
.badge-mute{color:var(--ag-text-mute);background:rgba(255,255,255,.03)}

/* ---------- cards ---------- */
.card{
  position:relative;background:var(--ag-surface);
  border:1px solid var(--ag-line);border-radius:var(--ag-radius-card);
  padding:24px;
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--ag-shadow-hover)}
.card-sm{padding:20px}

.post-card{
  display:flex;flex-direction:column;overflow:hidden;
  background:var(--ag-surface);border:1px solid var(--ag-line);
  border-radius:var(--ag-radius-card);
  transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.post-card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--ag-shadow-hover)}
.post-thumb{aspect-ratio:16/9;overflow:hidden;background:var(--ag-surface-2);position:relative}
.post-thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s ease-out}
.post-card:hover .post-thumb img{transform:scale(1.03)}
.post-body{padding:20px;display:flex;flex-direction:column;gap:10px;flex:1}
.post-meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ag-text-mute);letter-spacing:.02em}
.post-title{font-size:17px;font-weight:800;line-height:1.45;color:var(--ag-text)}
.post-card:hover .post-title{color:var(--ag-primary)}
.post-desc{font-size:14px;line-height:1.75;color:var(--ag-text-sub)}
.clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

.divider{height:1px;background:var(--ag-line);width:100%}

/* ---------- article hero ---------- */
.article-hero{position:relative;overflow:hidden;padding:34px 0 38px;border-bottom:1px solid var(--ag-line)}
.article-hero-bg{
  position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.18;filter:saturate(.85);
}
.article-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(11,15,13,.6),rgba(11,15,13,.96)),radial-gradient(60% 90% at 12% 0%,rgba(18,224,166,.18),transparent 68%);
}
.article-hero > .container-x{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ag-text-mute);letter-spacing:.02em}
.breadcrumb a{color:var(--ag-text-sub);transition:color .2s ease}
.breadcrumb a:hover{color:var(--ag-primary)}
.breadcrumb .sep{color:var(--ag-text-mute);opacity:.6}
.breadcrumb .current{color:var(--ag-text);max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.article-title{
  margin:16px 0 0;max-width:26ch;
  font-size:28px;line-height:1.18;font-weight:900;letter-spacing:-.02em;color:var(--ag-text);
}
@media (min-width:768px){.article-title{font-size:34px;line-height:1.15}}
@media (min-width:1024px){.article-title{font-size:44px;line-height:1.12}}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:18px;font-size:13px;color:var(--ag-text-mute);letter-spacing:.02em}
.article-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--ag-text-mute);opacity:.7}

/* ---------- layout ---------- */
.section{padding:56px 0}
@media (min-width:768px){.section{padding:72px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.article-layout{display:grid;grid-template-columns:minmax(0,1fr);gap:40px;max-width:1160px;margin:0 auto}
@media (min-width:1024px){
  .article-layout{grid-template-columns:minmax(0,800px) 260px;justify-content:center;gap:56px;align-items:start}
}
.article-main{min-width:0}
.article-side{display:none}
@media (min-width:1024px){.article-side{display:block}}

.article-cover{
  position:relative;margin:0 0 34px;border-radius:14px;overflow:hidden;
  aspect-ratio:16/9;background:var(--ag-surface-2);border:1px solid var(--ag-line);
}
.article-cover img{width:100%;height:100%;object-fit:cover}

/* ---------- article body ---------- */
.article-body{font-size:16px;line-height:1.9;color:var(--ag-text-sub);word-break:break-word}
.article-body p{margin:0 0 1.1em}
.article-body h2{
  position:relative;margin:44px 0 18px;padding-left:14px;
  font-size:24px;font-weight:800;line-height:1.35;color:var(--ag-text);
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:3px;border-radius:2px;
  background:var(--ag-grad-energy);
}
.article-body h3{margin:30px 0 12px;font-size:20px;font-weight:700;line-height:1.45;color:var(--ag-text)}
.article-body h4{margin:24px 0 10px;font-size:17px;font-weight:700;color:var(--ag-text)}
.article-body a{color:var(--ag-primary);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
.article-body a:hover{color:var(--ag-secondary)}
.article-body strong{color:var(--ag-text);font-weight:700}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.4em}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin:.5em 0}
.article-body ul li::marker{color:var(--ag-primary)}
.article-body ol li::marker{color:var(--ag-primary);font-weight:700}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;
  background:var(--ag-bg-soft);border-left:3px solid var(--ag-primary);
  border-radius:0 14px 14px 0;color:var(--ag-text);
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:14px;margin:24px auto}
.article-body figure{margin:24px 0}
.article-body figcaption{text-align:center;font-size:13px;color:var(--ag-text-mute);margin-top:10px}
.article-body hr{border:0;border-top:1px solid var(--ag-line);margin:36px 0}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15px;
  border:1px solid var(--ag-line);border-radius:14px;overflow:hidden;
}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--ag-line);text-align:left}
.article-body th{background:var(--ag-surface-2);color:var(--ag-text);font-weight:700}
.article-body tbody tr:nth-child(even){background:rgba(255,255,255,.02)}
.article-body tbody tr:last-child td{border-bottom:0}
.article-body code{
  padding:2px 6px;border-radius:6px;background:var(--ag-surface-2);
  color:var(--ag-secondary);font-size:14px;
}

/* ---------- article foot ---------- */
.article-foot{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;
  margin-top:44px;padding-top:24px;border-top:1px solid var(--ag-line);
}
.tag-list{display:flex;flex-wrap:wrap;gap:8px}
.share-list{display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--ag-text-mute)}
.share-chip{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  border:1px solid var(--ag-line);font-size:13px;color:var(--ag-text-sub);
  transition:color .2s ease,border-color .2s ease,background .2s ease;
}
.share-chip:hover{color:var(--ag-primary);border-color:rgba(18,224,166,.4);background:rgba(18,224,166,.1)}
.back-row{margin-top:28px}

/* ---------- toc ---------- */
.toc-card{
  position:sticky;top:96px;
  background:var(--ag-surface);border:1px solid var(--ag-line);
  border-radius:var(--ag-radius-card);padding:20px;
}
.toc-title{font-size:12px;letter-spacing:.16em;color:var(--ag-text-mute);text-transform:uppercase}
.toc-list{margin-top:14px;display:flex;flex-direction:column;border-left:1px solid var(--ag-line);max-height:60vh;overflow-y:auto}
.toc-list a{
  display:block;padding:7px 0 7px 14px;margin-left:-1px;
  font-size:14px;line-height:1.5;color:var(--ag-text-sub);
  border-left:2px solid transparent;
  transition:color .2s ease,border-color .2s ease;
}
.toc-list a:hover{color:var(--ag-text);border-left-color:rgba(18,224,166,.5)}
.toc-list a.is-current{color:var(--ag-primary);border-left-color:var(--ag-primary)}
.toc-list a.lv-3{padding-left:26px;font-size:13px;color:var(--ag-text-mute)}
.toc-empty{font-size:13px;color:var(--ag-text-mute);line-height:1.7;margin-top:12px}
.side-note{margin-top:20px;padding-top:18px;border-top:1px solid var(--ag-line)}
.side-note p{font-size:13px;line-height:1.75;color:var(--ag-text-mute)}

/* ---------- empty state ---------- */
.empty-state{
  display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;
  padding:56px 24px;min-height:280px;
  border:1px dashed var(--ag-line-strong);border-radius:var(--ag-radius-card);
  background:var(--ag-surface);
}
.empty-ring{
  width:64px;height:64px;border-radius:50%;
  border:1px solid rgba(18,224,166,.4);
  display:flex;align-items:center;justify-content:center;
  color:var(--ag-primary);font-size:22px;margin-bottom:18px;
}
.empty-title{font-size:16px;font-weight:700;color:var(--ag-text)}
.empty-desc{font-size:14px;line-height:1.75;color:var(--ag-text-mute);margin-top:8px;max-width:420px}

/* ---------- section head ---------- */
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:32px}
.section-title{font-size:22px;font-weight:800;line-height:1.3;color:var(--ag-text)}
@media (min-width:768px){.section-title{font-size:26px}}
@media (min-width:1024px){.section-title{font-size:32px}}
.section-sub{margin-top:12px;font-size:15px;line-height:1.8;color:var(--ag-text-sub);max-width:62ch}

/* ---------- faq ---------- */
.faq-list{display:flex;flex-direction:column;gap:14px;max-width:900px;margin:0 auto}
.faq-item{
  border:1px solid var(--ag-line);border-radius:var(--ag-radius-card);
  background:var(--ag-surface);overflow:hidden;
  transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item:hover{border-color:var(--ag-line-strong)}
.faq-item.is-open{border-color:rgba(18,224,166,.35);box-shadow:0 18px 40px -26px rgba(18,224,166,.4)}
.faq-q{
  position:relative;width:100%;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;text-align:left;
  font-size:16px;font-weight:700;color:var(--ag-text);
}
.faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:2px;border-radius:2px;
  background:var(--ag-primary);opacity:0;transition:opacity .2s ease;
}
.faq-item.is-open .faq-q::before{opacity:1}
.faq-icon{position:relative;width:20px;height:20px;flex:none}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:var(--ag-primary);border-radius:2px;
  transition:transform .22s ease;
}
.faq-icon::before{left:0;top:9px;width:20px;height:2px}
.faq-icon::after{left:9px;top:0;width:2px;height:20px}
.faq-item.is-open .faq-icon::after{transform:rotate(90deg) scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ag-text-sub);max-width:70ch}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:24px;padding:36px 26px;
  background:linear-gradient(100deg,rgba(18,224,166,.16),rgba(214,255,75,.07));
  border:1px solid rgba(18,224,166,.3);
  display:flex;flex-direction:column;gap:22px;
}
@media (min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;padding:44px 48px;gap:32px}}
.cta-band::before{
  content:"";position:absolute;right:-60px;top:-60px;width:220px;height:220px;border-radius:50%;
  background:radial-gradient(circle,rgba(18,224,166,.28),transparent 70%);
  pointer-events:none;
}
.cta-band h2{font-size:22px;font-weight:800;line-height:1.35;color:var(--ag-text);position:relative}
@media (min-width:768px){.cta-band h2{font-size:26px}}
.cta-band p{margin-top:10px;font-size:15px;line-height:1.8;color:var(--ag-text-sub);max-width:56ch;position:relative}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative}

/* ---------- footer ---------- */
.site-footer{background:var(--ag-bg-soft);border-top:1px solid var(--ag-line);margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1fr;gap:36px}
@media (min-width:640px){.footer-grid{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1fr 1.15fr;gap:40px}}
.footer-link{display:inline-block;font-size:14px;color:var(--ag-text-sub);transition:color .2s ease,transform .2s ease}
.footer-link:hover{color:var(--ag-primary);transform:translateX(2px)}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
  html{scroll-behavior:auto}
}

/* roulang page: category2 */
:root{
  --ag-bg:#0B0F0D;
  --ag-bg-soft:#101714;
  --ag-surface:#141C18;
  --ag-surface-2:#1A241F;
  --ag-line:rgba(255,255,255,.08);
  --ag-line-strong:rgba(255,255,255,.16);
  --ag-primary:#12E0A6;
  --ag-primary-dim:#0FB98A;
  --ag-secondary:#D6FF4B;
  --ag-accent:#FF6A2B;
  --ag-text:#F1F7F4;
  --ag-text-sub:#A7BAB1;
  --ag-text-mute:#6E8078;
  --ag-grad-energy:linear-gradient(100deg,#12E0A6,#D6FF4B);
  --ag-grad-panel:linear-gradient(180deg,rgba(18,224,166,.10),transparent);
  --ag-radius-card:18px;
  --ag-radius-btn:14px;
  --ag-radius-pill:999px;
  --ag-radius-img:14px;
  --ag-shadow-rest:0 0 0 1px rgba(255,255,255,.06);
  --ag-shadow-hover:0 18px 40px -18px rgba(18,224,166,.45),0 0 0 1px rgba(18,224,166,.35);
  --ag-glow:0 0 24px rgba(18,224,166,.35);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:-apple-system,"PingFang SC","HarmonyOS Sans SC","Noto Sans SC","Microsoft YaHei",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ag-text-sub);
  background-color:var(--ag-bg);
  background-image:
    radial-gradient(900px 620px at 80% -6%,rgba(18,224,166,.10),transparent 62%),
    radial-gradient(680px 520px at 2% 2%,rgba(214,255,75,.05),transparent 60%);
  background-attachment:fixed;
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
  font-variant-numeric:tabular-nums;
  overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;color:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
:focus-visible{outline:2px solid var(--ag-primary);outline-offset:2px;border-radius:6px}

/* 容器 */
.container-x{max-width:1240px;margin:0 auto;padding:0 32px;width:100%}
@media (max-width:1024px){.container-x{padding:0 24px}}
@media (max-width:640px){.container-x{padding:0 20px}}

/* 头部导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:80;
  background:transparent;border-bottom:1px solid transparent;
  transition:background .22s ease,border-color .22s ease,backdrop-filter .22s ease;
}
.site-header.is-stuck{
  background:rgba(16,23,20,.9);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom-color:var(--ag-line);
}
.nav-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;height:72px}
.logo-mark{
  width:36px;height:36px;border-radius:12px;flex:none;
  background:var(--ag-grad-energy);
  display:grid;place-items:center;
  box-shadow:var(--ag-glow);
  position:relative;overflow:hidden;
}
.logo-mark::after{
  content:"";position:absolute;top:-30%;left:-40%;width:60%;height:160%;
  background:rgba(255,255,255,.28);transform:rotate(24deg);
}
.logo-mark span{width:12px;height:12px;border-radius:4px;background:#06170F;display:block;position:relative;z-index:2}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-link{
  position:relative;display:inline-flex;align-items:center;
  padding:9px 15px;border-radius:var(--ag-radius-pill);
  font-size:14.5px;font-weight:600;color:var(--ag-text-sub);
  transition:color .2s ease,background .2s ease;
}
.nav-link:hover{color:var(--ag-text);background:rgba(255,255,255,.06)}
.nav-link.is-active{color:var(--ag-primary);background:rgba(18,224,166,.14)}
.nav-link.is-active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:16px;height:2px;border-radius:2px;background:var(--ag-primary);
}
.burger{
  display:none;width:44px;height:44px;border-radius:12px;
  background:var(--ag-surface-2);border:1px solid var(--ag-line);
  align-items:center;justify-content:center;cursor:pointer;
  transition:border-color .2s ease,background .2s ease;
}
.burger:hover{border-color:rgba(18,224,166,.4);background:rgba(18,224,166,.10)}
.burger i{display:block;width:18px;height:2px;background:var(--ag-text);position:relative;border-radius:2px;transition:background .2s}
.burger i::before,.burger i::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ag-text);border-radius:2px;
  transition:transform .2s ease;
}
.burger i::before{top:-6px}
.burger i::after{top:6px}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;z-index:90;background:rgba(4,7,6,.66);
  opacity:0;visibility:hidden;transition:opacity .22s ease,visibility .22s ease;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,360px);z-index:95;
  background:var(--ag-bg-soft);border-left:1px solid var(--ag-line);
  transform:translateX(102%);transition:transform .24s ease;
  display:flex;flex-direction:column;padding:20px;
}
.drawer.is-open{transform:translateX(0)}
.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  padding:15px 14px;border-radius:14px;font-size:15.5px;font-weight:700;color:var(--ag-text-sub);
  border:1px solid transparent;transition:background .2s ease,color .2s ease,border-color .2s ease;
}
.drawer-link:hover,.drawer-link.is-active{color:var(--ag-primary);background:rgba(18,224,166,.12);border-color:rgba(18,224,166,.28)}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--ag-radius-btn);
  font-size:15px;font-weight:800;letter-spacing:.01em;
  border:1px solid transparent;cursor:pointer;
  transition:transform .2s ease,background .2s ease,color .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--ag-grad-energy);color:#06170F;box-shadow:var(--ag-glow)}
.btn-primary:hover{filter:brightness(1.06);transform:translateY(-1px)}
.btn-outline{background:transparent;border-color:rgba(18,224,166,.45);color:var(--ag-primary)}
.btn-outline:hover{background:rgba(18,224,166,.12);border-color:var(--ag-primary)}
.btn-quiet{background:var(--ag-surface-2);border-color:var(--ag-line);color:var(--ag-text)}
.btn-quiet:hover{border-color:rgba(18,224,166,.4);background:rgba(18,224,166,.10)}
.btn-sm{height:40px;padding:0 18px;font-size:14px;border-radius:12px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.5;cursor:not-allowed;transform:none}
.link-text{
  display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:700;color:var(--ag-primary);
  position:relative;
}
.link-text::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;background:var(--ag-primary);
  transition:width .22s ease;
}
.link-text:hover::after{width:100%}

/* 徽章标签 */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 11px;
  border-radius:var(--ag-radius-pill);font-size:12px;font-weight:700;letter-spacing:.02em;
  white-space:nowrap;
}
.badge-primary{background:rgba(18,224,166,.14);color:var(--ag-primary)}
.badge-lime{background:rgba(214,255,75,.14);color:var(--ag-secondary)}
.badge-accent{background:rgba(255,106,43,.16);color:#FF8A55}
.badge-muted{background:rgba(255,255,255,.06);color:var(--ag-text-mute)}

/* 首屏 */
.cat-hero{position:relative;padding:168px 0 92px;overflow:hidden;isolation:isolate}
.cat-hero-bg{
  position:absolute;inset:0;z-index:-2;
  background-image:url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;opacity:.42;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:
    radial-gradient(720px 420px at 50% 8%,rgba(18,224,166,.16),transparent 68%),
    linear-gradient(180deg,rgba(11,15,13,.62) 0%,rgba(11,15,13,.88) 58%,var(--ag-bg) 100%);
}
.hero-sub{max-width:760px;margin:20px auto 0;font-size:16.5px;line-height:1.9;color:var(--ag-text-sub)}
.h-display{font-size:44px;font-weight:900;line-height:1.12;letter-spacing:-.02em;color:var(--ag-text)}
@media (max-width:1024px){.h-display{font-size:34px}}
@media (max-width:640px){.h-display{font-size:28px}}
.hero-chip{
  display:inline-flex;align-items:center;gap:8px;
  padding:8px 16px;border-radius:var(--ag-radius-pill);
  background:rgba(18,224,166,.12);border:1px solid rgba(18,224,166,.3);
  font-size:13px;font-weight:700;color:var(--ag-primary);letter-spacing:.06em;
}

/* 数据条 */
.stat-strip{
  margin-top:64px;
  display:grid;grid-template-columns:repeat(4,1fr);
  background:rgba(20,28,24,.82);border:1px solid var(--ag-line);
  border-radius:var(--ag-radius-card);overflow:hidden;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
}
.stat-cell{padding:22px 24px;border-left:1px solid var(--ag-line)}
.stat-cell:first-child{border-left:none}
.stat-num{
  font-size:38px;font-weight:900;line-height:1.1;letter-spacing:-.02em;
  background:var(--ag-grad-energy);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{margin-top:8px;font-size:13px;color:var(--ag-text-mute);letter-spacing:.02em}
@media (max-width:900px){
  .stat-strip{grid-template-columns:repeat(2,1fr);margin-top:48px}
  .stat-cell:nth-child(3){border-left:none;border-top:1px solid var(--ag-line)}
  .stat-cell:nth-child(4){border-top:1px solid var(--ag-line)}
}
@media (max-width:520px){
  .stat-cell{padding:18px}
  .stat-num{font-size:30px}
}

/* 通用板块 */
.sec{padding:96px 0;position:relative}
@media (max-width:1024px){.sec{padding:72px 0}}
@media (max-width:640px){.sec{padding:56px 0}}
.sec-head{max-width:760px;margin-bottom:40px}
.sec-head.is-center{margin-left:auto;margin-right:auto;text-align:center}
.eyebrow{font-size:13px;letter-spacing:.18em;font-weight:700;color:var(--ag-primary)}
.h-sec{font-size:32px;font-weight:800;line-height:1.22;color:var(--ag-text);margin-top:12px;letter-spacing:-.01em}
@media (max-width:1024px){.h-sec{font-size:26px}}
@media (max-width:640px){.h-sec{font-size:22px}}
.sec-sub{margin-top:14px;font-size:15.5px;color:var(--ag-text-sub)}
.divider{height:1px;background:var(--ag-line)}

/* 卡片 */
.card{
  background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--ag-radius-card);
  padding:24px;transition:transform .2s ease-out,border-color .2s ease-out,box-shadow .2s ease-out;
}
.card:hover{transform:translateY(-3px);border-color:rgba(18,224,166,.35);box-shadow:var(--ag-shadow-hover)}
.card-flat:hover{transform:none;border-color:var(--ag-line);box-shadow:none}
.card-link{display:block;height:100%}
.card-cover{border-radius:var(--ag-radius-img);overflow:hidden;aspect-ratio:16/10;background:var(--ag-surface-2)}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .25s ease-out}
.card-link:hover .card-cover img{transform:scale(1.03)}
.title-2{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:17px;font-weight:700;line-height:1.6;color:var(--ag-text);
}
.desc-2{
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  font-size:14.5px;line-height:1.8;color:var(--ag-text-sub);
}
.meta-row{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--ag-text-mute)}
.dot-sep{width:3px;height:3px;border-radius:50%;background:var(--ag-text-mute);display:inline-block}

/* 图文交替 */
.feature-row{
  display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;
  margin-bottom:88px;
}
.feature-row:last-child{margin-bottom:0}
.feature-row.is-flip .feature-media{order:2}
.feature-media{position:relative}
.feature-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--ag-radius-img);
  border:1px solid var(--ag-line);
}
.feature-media::after{
  content:"";position:absolute;inset:auto -14px -14px auto;width:120px;height:120px;
  border-radius:22px;border:1px solid rgba(18,224,166,.28);
  background:var(--ag-grad-panel);z-index:-1;
}
.feature-index{
  display:inline-flex;align-items:center;justify-content:center;
  width:42px;height:42px;border-radius:13px;flex:none;
  background:rgba(18,224,166,.12);border:1px solid rgba(18,224,166,.3);
  color:var(--ag-primary);font-size:15px;font-weight:900;
}
.feature-copy h3{font-size:22px;font-weight:800;color:var(--ag-text);line-height:1.35}
.feature-copy p{margin-top:14px;font-size:15.5px;line-height:1.9;color:var(--ag-text-sub)}
.check-list{margin-top:20px;display:grid;gap:10px}
.check-list li{display:flex;gap:10px;font-size:14.5px;color:var(--ag-text-sub)}
.check-list li::before{
  content:"";flex:none;width:6px;height:6px;border-radius:2px;margin-top:11px;
  background:var(--ag-grad-energy);
}
@media (max-width:900px){
  .feature-row{grid-template-columns:1fr;gap:28px;margin-bottom:56px}
  .feature-row.is-flip .feature-media{order:0}
  .feature-media::after{display:none}
}

/* 横向时间轴 */
.timeline{
  position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:22px;
  margin-top:56px;
}
.timeline::before{
  content:"";position:absolute;top:9px;left:6px;right:6px;height:2px;
  background:linear-gradient(90deg,var(--ag-primary),var(--ag-secondary) 62%,rgba(255,255,255,.08));
  border-radius:2px;
}
.tl-item{position:relative;padding-top:44px}
.tl-node{
  position:absolute;top:0;left:0;width:20px;height:20px;border-radius:50%;
  background:var(--ag-surface-2);border:2px solid var(--ag-line-strong);
}
.tl-item.is-done .tl-node{background:var(--ag-primary);border-color:var(--ag-primary);box-shadow:0 0 0 6px rgba(18,224,166,.14)}
.tl-item.is-now .tl-node{background:var(--ag-bg);border-color:var(--ag-primary);animation:agPulse 1.9s ease-in-out infinite}
@keyframes agPulse{
  0%,100%{box-shadow:0 0 0 0 rgba(18,224,166,.4)}
  50%{box-shadow:0 0 0 9px rgba(18,224,166,0)}
}
.tl-item h3{font-size:16px;font-weight:800;color:var(--ag-text)}
.tl-item p{margin-top:8px;font-size:14px;line-height:1.8;color:var(--ag-text-sub)}
@media (max-width:1023px){
  .timeline{grid-template-columns:1fr;gap:26px;margin-top:40px}
  .timeline::before{top:4px;bottom:4px;left:9px;right:auto;width:2px;height:auto;
    background:linear-gradient(180deg,var(--ag-primary),var(--ag-secondary) 62%,rgba(255,255,255,.08))}
  .tl-item{padding:0 0 0 42px;min-height:44px}
  .tl-node{top:2px}
}

/* 进度面板 */
.panel{
  background:var(--ag-surface);border:1px solid var(--ag-line);
  border-radius:var(--ag-radius-card);padding:36px;
}
.panel-glow{background-image:var(--ag-grad-panel);border-color:rgba(18,224,166,.26)}
.bar-track{height:8px;border-radius:999px;background:var(--ag-surface-2);overflow:hidden}
.bar-fill{height:100%;width:0;border-radius:999px;background:var(--ag-grad-energy);transition:width .6s ease-out}
.progress-num{
  font-size:52px;font-weight:900;line-height:1;letter-spacing:-.02em;
  background:var(--ag-grad-energy);-webkit-background-clip:text;background-clip:text;color:transparent;
}
@media (max-width:640px){.progress-num{font-size:40px}.panel{padding:24px}}
.stage-row{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:26px}
.stage{
  padding:14px 16px;border-radius:14px;border:1px solid var(--ag-line);
  background:var(--ag-surface-2);
}
.stage.is-done{border-color:rgba(18,224,166,.4);background:rgba(18,224,166,.10)}
.stage.is-now{border-color:rgba(214,255,75,.4)}
.stage-name{font-size:14px;font-weight:700;color:var(--ag-text)}
.stage-state{margin-top:6px;font-size:12.5px;color:var(--ag-text-mute)}
@media (max-width:760px){.stage-row{grid-template-columns:repeat(2,1fr)}}

/* 奖励清单 */
.reward-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
@media (max-width:1024px){.reward-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:640px){.reward-grid{grid-template-columns:1fr}}
.reward-num{
  font-size:30px;font-weight:900;line-height:1.1;color:var(--ag-primary);letter-spacing:-.01em;
}
.reward-num.is-lime{color:var(--ag-secondary)}
.reward-num.is-accent{color:var(--ag-accent)}

/* FAQ */
.faq-wrap{display:grid;gap:12px;max-width:900px}
.faq-item{
  background:var(--ag-surface);border:1px solid var(--ag-line);border-radius:var(--ag-radius-card);
  overflow:hidden;transition:border-color .2s ease,background .2s ease;
}
.faq-item:hover{border-color:rgba(18,224,166,.3)}
.faq-item[open]{border-color:rgba(18,224,166,.4);border-left:2px solid var(--ag-primary)}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding:16px 22px;font-size:16px;font-weight:700;color:var(--ag-text);
  transition:color .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:none;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:17px;font-weight:700;line-height:1;
  color:var(--ag-primary);background:rgba(18,224,166,.12);
  transition:transform .22s ease,background .22s ease;
}
.faq-item[open] summary::after{content:"−";transform:rotate(180deg)}
.faq-item summary:hover{color:var(--ag-primary)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.9;color:var(--ag-text-sub)}

/* CTA 条 */
.cta-band{
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  padding:42px 44px;border-radius:var(--ag-radius-card);
  background-image:linear-gradient(100deg,rgba(18,224,166,.18),rgba(214,255,75,.05) 62%,transparent),var(--ag-grad-panel);
  background-color:var(--ag-surface);
  border:1px solid rgba(18,224,166,.3);
}
.cta-band h2{font-size:28px;font-weight:900;line-height:1.25;color:var(--ag-text)}
.cta-band p{margin-top:10px;font-size:15px;color:var(--ag-text-sub);max-width:640px}
@media (max-width:860px){
  .cta-band{flex-direction:column;align-items:flex-start;padding:30px 26px}
  .cta-band h2{font-size:22px}
}

/* 页脚 */
.site-footer{background:var(--ag-bg-soft);border-top:1px solid var(--ag-line);margin-top:8px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px}
@media (max-width:1024px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}}
@media (max-width:640px){.footer-grid{grid-template-columns:1fr;gap:28px}}
.footer-link{
  font-size:14px;color:var(--ag-text-sub);display:inline-block;
  transition:color .2s ease,transform .2s ease;
}
.footer-link:hover{color:var(--ag-primary);transform:translateX(2px)}

/* 动效降级 */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important}
}