/* roulang page: index */
:root{
  --bg-0:#0D0A18;
  --bg-1:#141029;
  --surface:#1B1636;
  --card:#221B40;
  --primary:#17E0A8;
  --primary-hover:#3CF0BE;
  --accent:#FF6A3D;
  --violet:#8A6BFF;
  --paper:#F6F4FF;
  --ink:#171226;
  --text:#EDEAF6;
  --text-2:#A79FC2;
  --text-3:#6F6890;
  --line:rgba(237,234,246,.10);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(6,4,16,.45);
  --sh-2:0 14px 36px rgba(6,4,16,.55);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  padding:0;
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  color:var(--text);
  background-color:var(--bg-0);
  background-image:
    radial-gradient(58% 46% at 10% 0%, rgba(23,224,168,.08), transparent 62%),
    radial-gradient(52% 42% at 90% 6%, rgba(138,107,255,.08), transparent 64%),
    linear-gradient(rgba(237,234,246,.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237,234,246,.028) 1px, transparent 1px);
  background-size:auto, auto, 48px 48px, 48px 48px;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s var(--ease)}
a:hover{color:var(--primary-hover)}
h1,h2,h3,h4,p,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input{font-family:inherit}
::selection{background:rgba(23,224,168,.28);color:#fff}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.grid-container{max-width:var(--container);padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto}
.grid-x.grid-margin-x{margin-left:-12px;margin-right:-12px}
.grid-x.grid-margin-x>.cell{padding-left:12px;padding-right:12px}
.grid-x.grid-margin-y{margin-top:-12px;margin-bottom:-12px}
.grid-x.grid-margin-y>.cell{padding-top:12px;padding-bottom:12px}
section{position:relative}
.section{padding:92px 0}
.section--tight{padding:64px 0}
.section--alt{background:linear-gradient(180deg, rgba(27,22,54,.72), rgba(13,10,24,0));border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:34px}
.section-head__row{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px}
.section-title{font-size:clamp(22px,2.6vw,34px);font-weight:800;line-height:1.25;letter-spacing:-.01em;color:var(--text)}
.section-title .mark{color:var(--primary)}
.section-desc{margin-top:12px;max-width:760px;font-size:15px;line-height:1.85;color:var(--text-2)}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;font-weight:600;letter-spacing:.14em;color:var(--primary);text-transform:uppercase}
.eyebrow::before{content:"";width:22px;height:1px;background:linear-gradient(90deg,var(--primary),rgba(138,107,255,.6))}

/* ---------- 按钮族 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  will-change:transform;
}
.btn i{font-size:13px}
.btn--primary{background:linear-gradient(135deg,var(--primary),#12C795);color:#06121A;box-shadow:0 8px 22px rgba(23,224,168,.18)}
.btn--primary:hover{color:#06121A;transform:translateY(-2px);filter:brightness(1.06);box-shadow:0 0 0 1px rgba(23,224,168,.32),0 12px 30px rgba(23,224,168,.20)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn--ghost:hover{border-color:rgba(23,224,168,.55);background:rgba(23,224,168,.08);color:var(--primary-hover);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--text{height:auto;padding:2px 0;color:var(--primary);font-weight:700;border-radius:0;border-bottom:1px solid rgba(23,224,168,.35)}
.btn--text:hover{color:var(--primary-hover);border-bottom-color:var(--primary-hover)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--icon{width:40px;height:40px;padding:0;border-radius:12px;border:1px solid var(--line);background:rgba(34,27,64,.6);color:var(--text-2)}
.btn--icon:hover{color:var(--primary);border-color:rgba(23,224,168,.45);background:rgba(23,224,168,.08)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ---------- 徽章 / 标签 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 10px;border-radius:8px;font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.7}
.badge--violet{background:rgba(138,107,255,.14);color:#BCA9FF}
.badge--primary{background:rgba(23,224,168,.14);color:#6FF2CB}
.badge--accent{background:rgba(255,106,61,.16);color:#FFA383}
.badge--line{border:1px solid var(--line);color:var(--text-2)}
.tagline{display:flex;flex-wrap:wrap;gap:10px}
.tag{display:inline-flex;align-items:center;padding:6px 14px;border:1px solid var(--line);border-radius:var(--r-pill);font-size:13px;color:var(--text-2);background:rgba(27,22,54,.6);transition:all .2s var(--ease)}
.tag:hover{border-color:rgba(23,224,168,.45);color:var(--primary);transform:translateY(-2px)}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,10,24,.92);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background-color .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(13,10,24,.96)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;height:68px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand__mark{
  width:36px;height:36px;border-radius:11px;
  background:linear-gradient(135deg,var(--primary),var(--violet));
  display:flex;align-items:center;justify-content:center;
  color:#0A0714;font-size:15px;font-weight:800;
  transition:transform .24s var(--ease);
}
.brand:hover .brand__mark{transform:rotate(2deg) scale(1.03)}
.brand__text{font-size:18px;font-weight:800;letter-spacing:-.01em;line-height:1.2}
.brand__sub{display:block;font-size:11px;font-weight:500;letter-spacing:.1em;color:var(--text-3)}
.nav-main{display:flex;align-items:center;gap:6px}
.nav-main a{
  position:relative;display:inline-flex;align-items:center;height:68px;padding:0 14px;
  font-size:15px;font-weight:600;color:var(--text-2);
  transition:color .2s var(--ease);
}
.nav-main a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:14px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
}
.nav-main a:hover{color:var(--text)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--primary)}
.nav-main a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;height:40px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid rgba(23,224,168,.36);color:var(--primary);font-size:14px;font-weight:700;
  background:rgba(23,224,168,.07);transition:all .2s var(--ease);
}
.mega-trigger:hover{background:rgba(23,224,168,.14);color:var(--primary-hover);transform:translateY(-1px)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:780px;
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  box-shadow:var(--sh-2);padding:26px;
  display:grid;grid-template-columns:1.1fr 1.3fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;font-weight:700;letter-spacing:.1em;color:var(--text-3);margin-bottom:14px;text-transform:uppercase}
.mega-col ul li + li{margin-top:8px}
.mega-col ul a{display:inline-block;font-size:14px;color:var(--text-2);transition:all .18s var(--ease)}
.mega-col ul a:hover{color:var(--primary);transform:translateX(2px)}
.mega-post{display:block;padding:10px 0;border-bottom:1px dashed var(--line)}
.mega-post:last-child{border-bottom:0}
.mega-post strong{display:block;font-size:14px;font-weight:600;color:var(--text);line-height:1.5}
.mega-post span{font-size:12px;color:var(--text-3);font-family:var(--font-num);font-variant-numeric:tabular-nums}
.mega-col a.mega-post:hover strong{color:var(--primary)}
.mega-entry{display:flex;align-items:center;gap:10px;padding:12px 14px;border:1px solid var(--line);border-radius:var(--r-md);background:rgba(27,22,54,.55);transition:all .2s var(--ease)}
.mega-entry + .mega-entry{margin-top:10px}
.mega-entry i{color:var(--primary);font-size:14px}
.mega-entry span{font-size:13px;font-weight:600;color:var(--text)}
.mega-entry:hover{border-color:rgba(23,224,168,.45);transform:translateY(-2px);background:rgba(23,224,168,.06)}
.nav-toggle{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--line);color:var(--text);align-items:center;justify-content:center;font-size:16px}

/* ---------- 移动抽屉 ---------- */
.drawer-mask{position:fixed;inset:0;background:rgba(0,0,0,.6);opacity:0;visibility:hidden;transition:opacity .22s var(--ease),visibility .22s;z-index:70}
.drawer-mask.is-open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:300px;max-width:86vw;z-index:80;
  background:var(--bg-1);border-left:1px solid var(--line);padding:24px 22px;
  transform:translateX(102%);transition:transform .26s var(--ease);
  overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0)}
.mobile-drawer .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.mobile-drawer .drawer-title{font-size:16px;font-weight:800}
.drawer-list a{display:block;padding:14px 0;font-size:15px;font-weight:600;color:var(--text-2);border-bottom:1px solid var(--line)}
.drawer-list a.is-active{color:var(--primary)}
.drawer-list a:hover{color:var(--primary)}
.drawer-panel{padding:12px 0 0;font-size:14px;color:var(--text-3)}
.drawer-panel a{display:block;padding:8px 0;font-size:14px;color:var(--text-2)}

/* ---------- Hero ---------- */
.hero{padding:74px 0 88px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;left:-12%;top:-30%;width:62%;height:120%;
  background:radial-gradient(circle at 40% 40%, rgba(23,224,168,.10), transparent 62%);
  pointer-events:none;
}
.hero::after{
  content:"";position:absolute;right:-14%;top:-20%;width:56%;height:110%;
  background:radial-gradient(circle at 60% 40%, rgba(138,107,255,.10), transparent 64%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:20px}
.hero h1{font-size:clamp(30px,4.2vw,52px);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin-bottom:18px}
.hero h1 .hl{color:var(--primary)}
.hero-lead{font-size:17px;line-height:1.85;color:var(--text-2);max-width:560px;margin-bottom:28px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:28px}
.hero-art{position:relative}
.hero-art__frame{
  position:relative;border-radius:var(--r-lg);overflow:hidden;
  border:1px solid var(--line);box-shadow:var(--sh-2);
  aspect-ratio:4/3;background:linear-gradient(135deg,rgba(23,224,168,.16),rgba(138,107,255,.18));
}
.hero-art__frame img{width:100%;height:100%;object-fit:cover}
.hero-art__corner{
  position:absolute;top:0;left:0;z-index:3;
  padding:8px 16px;font-size:12px;font-weight:700;letter-spacing:.08em;
  background:linear-gradient(135deg,var(--primary),var(--violet));color:#0A0714;
  border-bottom-right-radius:14px;
}
.hero-stat{
  position:absolute;right:16px;bottom:16px;z-index:3;
  display:flex;align-items:center;gap:18px;
  padding:14px 20px;border-radius:var(--r-md);
  background:rgba(13,10,24,.86);border:1px solid var(--line);backdrop-filter:blur(6px);
}
.hero-stat div{text-align:left}
.hero-stat b{display:block;font-family:var(--font-num);font-variant-numeric:tabular-nums;font-size:19px;font-weight:800;color:var(--primary);line-height:1.2}
.hero-stat span{font-size:12px;color:var(--text-3);letter-spacing:.04em}
.hero-stat .sep{width:1px;height:28px;background:var(--line)}

/* ---------- 目录宫格 ---------- */
.dir-card{
  display:flex;align-items:center;gap:18px;
  padding:22px;border-radius:16px;
  background:linear-gradient(160deg,rgba(34,27,64,.95),rgba(27,22,54,.85));
  border:1px solid var(--line);position:relative;overflow:hidden;
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .24s var(--ease);
  height:100%;
}
.dir-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:linear-gradient(90deg,rgba(23,224,168,.7),rgba(138,107,255,.35),transparent)}
.dir-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.40);box-shadow:var(--sh-2);color:var(--text)}
.dir-card__num{
  font-family:var(--font-num);font-variant-numeric:tabular-nums;
  font-size:40px;font-weight:800;line-height:1;color:rgba(23,224,168,.35);
  transition:color .22s var(--ease);flex:0 0 auto;
}
.dir-card:hover .dir-card__num{color:var(--primary)}
.dir-card__body{flex:1 1 auto;min-width:0}
.dir-card__title{font-size:17px;font-weight:700;color:var(--text);line-height:1.45;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.dir-card__meta{margin-top:6px;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.dir-card__arrow{color:var(--text-3);font-size:14px;transition:transform .22s var(--ease),color .22s var(--ease);flex:0 0 auto}
.dir-card:hover .dir-card__arrow{transform:translateX(4px);color:var(--primary)}

/* ---------- 精选条目 ---------- */
.feature-main{
  display:block;height:100%;border-radius:16px;overflow:hidden;
  background:linear-gradient(160deg,rgba(34,27,64,.95),rgba(27,22,54,.9));
  border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .24s var(--ease);
  color:var(--text);
}
.feature-main:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.40);box-shadow:var(--sh-2);color:var(--text)}
.feature-main__img{aspect-ratio:16/9;overflow:hidden;background:linear-gradient(135deg,rgba(23,224,168,.14),rgba(138,107,255,.2))}
.feature-main__img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.feature-main:hover .feature-main__img img{transform:scale(1.04)}
.feature-main__body{padding:24px}
.feature-main__body h3{font-size:20px;font-weight:700;line-height:1.45;margin:12px 0 10px}
.feature-main__body p{font-size:14px;line-height:1.75;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.feature-main__foot{margin-top:18px;display:flex;align-items:center;justify-content:space-between;gap:12px}
.mini-card{
  display:flex;align-items:center;gap:14px;padding:16px;height:100%;
  border-radius:var(--r-md);background:rgba(27,22,54,.72);border:1px solid var(--line);
  transition:transform .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
  color:var(--text);
}
.mini-card:hover{transform:translateY(-3px);border-color:rgba(23,224,168,.38);background:rgba(34,27,64,.9);color:var(--text)}
.mini-card__thumb{width:64px;height:64px;flex:0 0 auto;border-radius:12px;overflow:hidden;background:linear-gradient(135deg,rgba(23,224,168,.16),rgba(138,107,255,.18))}
.mini-card__thumb img{width:100%;height:100%;object-fit:cover}
.mini-card__body{min-width:0}
.mini-card__body h3{font-size:15px;font-weight:700;line-height:1.5;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.mini-card__body p{margin-top:6px;font-size:13px;color:var(--text-3)}

/* ---------- 长条列表（CMS） ---------- */
.post-row{
  display:grid;grid-template-columns:160px 1fr auto;gap:22px;align-items:center;
  padding:22px 26px;border-bottom:1px solid var(--line);position:relative;
  transition:background-color .2s var(--ease);
}
.post-row:first-child{border-top:1px solid var(--line)}
.post-row::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;background:var(--primary);transform:scaleY(0);transform-origin:center;transition:transform .22s var(--ease);border-radius:0 3px 3px 0}
.post-row:hover{background:rgba(34,27,64,.55)}
.post-row:hover::before{transform:scaleY(1)}
.post-row__thumb{width:160px;height:100px;border-radius:var(--r-md);overflow:hidden;background:linear-gradient(135deg,rgba(23,224,168,.16),rgba(138,107,255,.18))}
.post-row__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.post-row:hover .post-row__thumb img{transform:scale(1.05)}
.post-row__main{min-width:0}
.post-row__main h3{font-size:18px;font-weight:700;line-height:1.5;margin:10px 0 8px}
.post-row__main h3 a{color:var(--text)}
.post-row__main h3 a:hover{color:var(--primary)}
.post-row__main p{font-size:14px;line-height:1.72;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:10px;display:flex;flex-wrap:wrap;align-items:center;gap:10px;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.post-meta time{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.post-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
.post-row__arrow{color:var(--text-3);font-size:15px;transition:transform .22s var(--ease),color .22s var(--ease)}
.post-row:hover .post-row__arrow{transform:translateX(4px);color:var(--primary)}
.list-foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:16px;margin-top:26px}
.pager{display:flex;align-items:center;gap:8px}
.pager a,.pager span{
  min-width:40px;height:40px;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid var(--line);border-radius:12px;font-size:14px;font-weight:600;color:var(--text-2);
  font-family:var(--font-num);font-variant-numeric:tabular-nums;transition:all .2s var(--ease);
}
.pager a:hover{border-color:rgba(23,224,168,.45);color:var(--primary)}
.pager .is-current{background:var(--primary);border-color:var(--primary);color:#06121A}
.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;padding:56px 20px;border:1px dashed var(--line);border-radius:16px;text-align:center;background:rgba(27,22,54,.4)}
.empty-state i{font-size:28px;color:rgba(23,224,168,.6)}
.empty-state p{font-size:15px;color:var(--text-2)}

/* ---------- 推荐卡片 ---------- */
.rec-card{
  display:block;height:100%;border-radius:16px;overflow:hidden;
  background:rgba(27,22,54,.72);border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .24s var(--ease);
  color:var(--text);
}
.rec-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.38);box-shadow:var(--sh-2);color:var(--text)}
.rec-card__img{aspect-ratio:16/10;overflow:hidden;background:linear-gradient(135deg,rgba(23,224,168,.14),rgba(138,107,255,.2))}
.rec-card__img img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rec-card:hover .rec-card__img img{transform:scale(1.04)}
.rec-card__body{padding:18px}
.rec-card__body h3{font-size:16px;font-weight:700;line-height:1.5;margin-top:10px;overflow:hidden;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
.rec-card__body p{margin-top:8px;font-size:13px;color:var(--text-3)}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:10px}
.faq-item{background:var(--surface);border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:border-color .2s var(--ease)}
.faq-item:hover{border-color:rgba(23,224,168,.3)}
.faq-item>summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item>summary::-webkit-details-marker{display:none}
.faq-item>summary::after{content:"+";font-family:var(--font-num);font-size:22px;line-height:1;color:var(--primary);transition:transform .22s var(--ease),color .22s var(--ease)}
.faq-item[open]>summary::after{content:"–";color:var(--primary-hover);transform:rotate(180deg)}
.faq-body{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- CTA 条 ---------- */
.cta-band{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:26px;
  padding:40px;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(23,224,168,.08),rgba(138,107,255,.08));
}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);font-weight:800;line-height:1.3}
.cta-band p{margin-top:10px;font-size:14px;color:var(--text-2);max-width:520px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- 页脚 ---------- */
.site-footer{margin-top:20px;background:#0A0714;border-top:1px solid var(--line);padding:72px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-brand .brand{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.8;color:var(--text-2);max-width:340px;margin-bottom:18px}
.footer-col h4{font-size:14px;font-weight:700;letter-spacing:.08em;color:var(--text);margin-bottom:18px}
.footer-col ul li + li{margin-top:10px}
.footer-col ul a{display:inline-block;font-size:14px;color:var(--text-2)}
.footer-col ul a:hover{color:var(--primary);transform:translateX(2px)}
.sub-form label{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px}
.sub-row{display:flex;gap:10px}
.sub-row input{
  flex:1 1 auto;min-width:0;height:48px;padding:0 16px;border-radius:12px;
  background:#14102A;border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-row input::placeholder{color:var(--text-3)}
.sub-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(23,224,168,.18)}
.form-hint{margin-top:10px;font-size:12px;color:var(--text-3)}
.footer-bottom{
  margin-top:56px;border-top:1px solid var(--line);
  padding:22px 0;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.to-top{
  width:42px;height:42px;border-radius:50%;border:1px solid rgba(23,224,168,.4);
  display:inline-flex;align-items:center;justify-content:center;color:var(--primary);
  transition:all .2s var(--ease);
}
.to-top:hover{background:var(--primary);color:#06121A;transform:translateY(-2px)}

/* ---------- 装饰分隔 ---------- */
.scan-line{height:1px;background:linear-gradient(90deg,transparent,rgba(237,234,246,.14),transparent)}

/* ---------- 响应式 ---------- */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .section{padding:72px 0}
  .nav-main,.nav-mega{display:none}
  .nav-toggle{display:inline-flex}
  .hero{padding:52px 0 64px}
  .hero-inner{grid-template-columns:1fr;gap:36px}
  .hero-art{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .post-row{grid-template-columns:130px 1fr auto;gap:16px;padding:18px}
  .post-row__thumb{width:130px;height:84px}
}
@media screen and (max-width:639px){
  body{font-size:15px}
  .grid-container{padding-left:16px;padding-right:16px}
  .section{padding:56px 0}
  .nav-inner{height:56px}
  .brand__text{font-size:16px}
  .brand__mark{width:32px;height:32px}
  .hero-cta .btn{width:100%}
  .hero-stat{left:16px;right:16px;justify-content:space-between;gap:10px;padding:12px 14px}
  .post-row{grid-template-columns:1fr;gap:14px}
  .post-row__thumb{width:100%;height:150px}
  .post-row__arrow{display:none}
  .cta-band{padding:24px}
  .cta-band__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .sub-row{flex-wrap:wrap}
  .sub-row .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --bg-0:#0D0A18;
  --bg-1:#141029;
  --surface:#1B1636;
  --card:#221B40;
  --primary:#17E0A8;
  --primary-h:#3CF0BE;
  --accent:#FF6A3D;
  --violet:#8A6BFF;
  --paper:#F6F4FF;
  --ink:#171226;
  --text:#EDEAF6;
  --text-2:#A79FC2;
  --text-3:#6F6890;
  --line:rgba(237,234,246,.10);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(6,4,16,.45);
  --sh-2:0 14px 36px rgba(6,4,16,.55);
  --glow:0 0 0 1px rgba(23,224,168,.30),0 12px 30px rgba(23,224,168,.14);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--bg-0);
  background-image:
    radial-gradient(780px 440px at 10% -8%, rgba(23,224,168,.08), transparent 66%),
    radial-gradient(660px 400px at 94% 2%, rgba(138,107,255,.08), transparent 62%);
  background-repeat:no-repeat;
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
}
body::before{
  content:"";position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(237,234,246,.032) 1px,transparent 1px),
    linear-gradient(90deg,rgba(237,234,246,.032) 1px,transparent 1px);
  background-size:64px 64px;
  -webkit-mask-image:radial-gradient(circle at 50% 12%,#000 0%,transparent 78%);
  mask-image:radial-gradient(circle at 50% 12%,#000 0%,transparent 78%);
}
img{display:block;max-width:100%;height:auto;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease),transform .2s var(--ease)}
a:hover{color:var(--primary)}
h1,h2,h3,h4{margin:0;font-weight:800;line-height:1.25;letter-spacing:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button,input{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums}
.grid-container{max-width:var(--container);margin:0 auto;padding-left:32px;padding-right:32px;width:100%}
.grid-x{margin-left:-12px;margin-right:-12px}
.grid-x>.cell{padding-left:12px;padding-right:12px}
section{position:relative;z-index:1}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,10,24,.72);
  border-bottom:1px solid var(--line);
  transition:background-color .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(13,10,24,.92);box-shadow:var(--sh-1);border-bottom-color:rgba(23,224,168,.16)}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.brand__mark{
  width:38px;height:38px;border-radius:12px 12px 12px 4px;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-weight:800;font-size:15px;letter-spacing:.02em;
  color:#06121A;
  background:linear-gradient(140deg,var(--primary) 0%,var(--primary-h) 52%,var(--violet) 100%);
  box-shadow:0 8px 20px rgba(23,224,168,.22);
  transition:transform .24s var(--ease);
}
.brand:hover .brand__mark{transform:rotate(2deg)}
.brand__text{display:flex;flex-direction:column;font-size:18px;font-weight:800;line-height:1.15;color:var(--text)}
.brand__sub{font-size:11px;font-weight:600;letter-spacing:.08em;color:var(--text-3);margin-top:3px}
.nav-main{display:flex;align-items:center;gap:6px;flex:1 1 auto}
.nav-main a{
  position:relative;display:inline-block;padding:8px 12px;border-radius:var(--r-sm);
  font-size:15px;font-weight:600;color:var(--text-2);white-space:nowrap;
}
.nav-main a:hover{color:var(--text);background:rgba(237,234,246,.04)}
.nav-main a.is-active{color:var(--primary)}
.nav-main a.is-active::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;
  border-radius:2px;background:linear-gradient(90deg,var(--primary),var(--violet));
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:40px;padding:0 18px;border-radius:var(--r-pill);
  background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.30);
  color:var(--primary);font-size:14px;font-weight:700;
  transition:background-color .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),box-shadow .2s var(--ease);
}
.mega-trigger:hover{background:rgba(23,224,168,.18);color:var(--primary-h);transform:translateY(-1px);box-shadow:var(--glow)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;width:760px;max-width:82vw;
  display:grid;grid-template-columns:1.1fr 1.2fr .9fr;gap:22px;
  padding:24px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s var(--ease);
}
.nav-mega:hover .mega-panel,.nav-mega:focus-within .mega-panel,.nav-mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--text-3);text-transform:uppercase;margin-bottom:12px}
.mega-col ul li{margin-bottom:8px}
.mega-col ul a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.mega-col ul a:hover{color:var(--primary);transform:translateX(2px)}
.mega-post{display:flex;flex-direction:column;gap:3px;padding:9px 10px;border-radius:var(--r-sm);border:1px solid transparent}
.mega-post strong{font-size:14px;font-weight:600;color:var(--text);line-height:1.5}
.mega-post span{font-size:12px;color:var(--text-3)}
.mega-post:hover{background:rgba(23,224,168,.07);border-color:rgba(23,224,168,.22);color:var(--primary)}
.mega-entry{
  display:flex;align-items:center;gap:10px;padding:11px 12px;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--text-2);
  margin-bottom:8px;
}
.mega-entry i{color:var(--primary);font-size:13px;width:16px;text-align:center}
.mega-entry:hover{border-color:rgba(23,224,168,.32);color:var(--text);transform:translateY(-2px);box-shadow:var(--sh-1)}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:12px;
  border:1px solid var(--line);background:var(--surface);color:var(--text);
  align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:rgba(23,224,168,.34);color:var(--primary)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-color .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
}
.btn--primary{background:linear-gradient(135deg,var(--primary),var(--primary-h));color:#06121A;box-shadow:0 10px 24px rgba(23,224,168,.20)}
.btn--primary:hover{color:#06121A;transform:translateY(-2px);box-shadow:var(--glow);filter:brightness(1.06)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;border:1px solid var(--line);color:var(--text)}
.btn--ghost:hover{border-color:rgba(23,224,168,.42);color:var(--primary);background:rgba(23,224,168,.08)}
.btn--sm{height:40px;padding:0 18px;font-size:14px}
.btn--wide{width:100%}
.btn[disabled],.btn.is-disabled{opacity:.45;cursor:not-allowed}

/* ---------- badges / tags ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:8px;font-size:12px;font-weight:600;letter-spacing:.04em;line-height:1.6}
.badge--cat{background:rgba(138,107,255,.14);color:#C3B2FF}
.badge--hot{background:rgba(255,106,61,.16);color:#FF9C7B}
.badge--line{border:1px solid var(--line);color:var(--text-2)}
.tag{display:inline-flex;align-items:center;padding:4px 11px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-2);background:rgba(237,234,246,.02)}
.tagline{display:flex;flex-wrap:wrap;gap:8px}

/* ---------- breadcrumb ---------- */
.crumbs{padding:16px 0 0;font-size:13px;color:var(--text-3);display:flex;align-items:center;flex-wrap:wrap;gap:8px}
.crumbs i{font-size:9px;color:var(--text-3)}
.crumbs a:hover{color:var(--primary)}
.crumbs .current{color:var(--primary);font-weight:600}

/* ---------- category hero ---------- */
.cat-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);padding:44px 0 40px;min-height:300px}
.cat-hero__bg{position:absolute;inset:0;background-image:url(/assets/images/backpic/back-2.png);background-size:cover;background-position:center;opacity:.22}
.cat-hero__veil{position:absolute;inset:0;background:linear-gradient(100deg,rgba(13,10,24,.94) 0%,rgba(13,10,24,.82) 46%,rgba(13,10,24,.55) 100%)}
.cat-hero__inner{position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:32px;align-items:flex-end;justify-content:space-between}
.cat-hero__text{max-width:720px}
.cat-hero h1{font-size:clamp(28px,3.6vw,44px);line-height:1.16;letter-spacing:-.02em;margin:14px 0 14px}
.cat-hero h1 em{font-style:normal;color:var(--primary)}
.cat-hero__lede{font-size:16px;line-height:1.78;color:var(--text-2);max-width:660px}
.cat-hero__meta{display:flex;flex-wrap:wrap;gap:26px;padding:18px 22px;border-radius:var(--r-lg);background:rgba(27,22,54,.78);border:1px solid var(--line);box-shadow:var(--sh-1)}
.cat-hero__meta div{min-width:92px}
.cat-hero__meta dt{font-size:12px;letter-spacing:.06em;color:var(--text-3);margin-bottom:4px}
.cat-hero__meta dd{margin:0;font-size:20px;font-weight:800;color:var(--primary);font-family:var(--font-num);font-variant-numeric:tabular-nums}

/* ---------- anchor bar ---------- */
.anchor-bar{position:relative;z-index:3;border-bottom:1px solid var(--line);background:rgba(20,16,41,.72)}
.anchor-bar__inner{display:flex;gap:10px;align-items:center;padding:14px 0;overflow-x:auto;scrollbar-width:none}
.anchor-bar__inner::-webkit-scrollbar{display:none}
.anchor-bar__label{flex:0 0 auto;font-size:12px;font-weight:700;letter-spacing:.08em;color:var(--text-3);padding-right:6px;border-right:1px solid var(--line);margin-right:4px}
.anchor-chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:var(--r-pill);border:1px solid var(--line);
  font-size:13px;font-weight:600;color:var(--text-2);background:rgba(237,234,246,.02);
}
.anchor-chip span{font-family:var(--font-num);font-size:11px;color:var(--text-3)}
.anchor-chip:hover{color:var(--primary);border-color:rgba(23,224,168,.40);background:rgba(23,224,168,.08);transform:translateY(-2px)}

/* ---------- layout ---------- */
.main-wrap{padding:56px 0 72px}
.section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:26px}
.section-title{font-size:clamp(21px,2.4vw,30px);font-weight:800;line-height:1.28}
.section-title small{display:block;font-size:12px;font-weight:700;letter-spacing:.1em;color:var(--text-3);margin-bottom:8px}
.section-lede{font-size:14px;line-height:1.75;color:var(--text-2);max-width:620px;margin-top:8px}
.text-btn{display:inline-flex;align-items:center;gap:7px;font-size:14px;font-weight:700;color:var(--text-2);border-bottom:1px solid transparent;padding-bottom:2px}
.text-btn:hover{color:var(--primary);border-bottom-color:var(--primary)}

/* ---------- zone grid ---------- */
.zone{margin-bottom:48px}
.zone__head{display:flex;align-items:center;gap:14px;padding-bottom:14px;margin-bottom:20px;border-bottom:1px solid var(--line);position:relative}
.zone__head::after{content:"";position:absolute;left:0;bottom:-1px;width:88px;height:2px;background:linear-gradient(90deg,var(--primary),rgba(138,107,255,.6))}
.zone__num{
  font-family:var(--font-num);font-size:34px;font-weight:800;line-height:1;
  color:rgba(23,224,168,.38);font-variant-numeric:tabular-nums;
}
.zone__title{font-size:20px;font-weight:800}
.zone__title span{display:block;font-size:13px;font-weight:600;color:var(--text-3);margin-top:4px}
.mini-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.mini-card{
  display:flex;flex-direction:column;gap:10px;
  padding:18px;border-radius:var(--r-md);
  background:var(--card);border:1px solid var(--line);
  transition:transform .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.mini-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.40);box-shadow:var(--sh-2)}
.mini-card h3{font-size:16px;font-weight:700;line-height:1.45;color:var(--text)}
.mini-card__meta{display:flex;align-items:center;gap:10px;font-size:13px;color:var(--text-3);letter-spacing:.02em}
.mini-card__meta i{color:var(--primary);font-size:11px}
.mini-card__go{margin-top:auto;display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:700;color:var(--text-3)}
.mini-card:hover .mini-card__go{color:var(--primary)}
.mini-card:hover .mini-card__go i{transform:translateX(4px)}
.mini-card__go i{transition:transform .22s var(--ease)}

/* ---------- sidebar ---------- */
.side-card{
  padding:22px;border-radius:var(--r-lg);background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--sh-1);margin-bottom:20px;
}
.side-card h3{font-size:16px;font-weight:800;margin-bottom:6px}
.side-card p{font-size:13px;color:var(--text-2);line-height:1.75;margin-bottom:14px}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px}
.tag-cloud a{padding:6px 12px;border-radius:var(--r-pill);border:1px solid var(--line);font-size:12.5px;font-weight:600;color:var(--text-2)}
.tag-cloud a:hover{color:var(--primary);border-color:rgba(23,224,168,.40);background:rgba(23,224,168,.08)}
.entry-mini{display:flex;gap:14px;align-items:center;padding:12px;border-radius:var(--r-md);border:1px solid var(--line);background:var(--card);margin-bottom:12px}
.entry-mini:last-child{margin-bottom:0}
.entry-mini img{width:74px;height:52px;object-fit:cover;border-radius:var(--r-sm);flex:0 0 auto}
.entry-mini strong{display:block;font-size:14px;font-weight:700;line-height:1.5}
.entry-mini span{display:block;font-size:12px;color:var(--text-3);margin-top:4px}
.entry-mini:hover{border-color:rgba(23,224,168,.38);transform:translateY(-2px)}
.entry-mini:hover strong{color:var(--primary)}
.side-list li{padding:10px 0;border-bottom:1px dashed var(--line);font-size:13.5px;color:var(--text-2);display:flex;justify-content:space-between;gap:10px}
.side-list li:last-child{border-bottom:0}
.side-list li a:hover{color:var(--primary)}
.side-list span{color:var(--text-3);font-family:var(--font-num);font-size:12.5px}

/* ---------- faq ---------- */
.faq-block{margin-top:56px}
.faq-item{
  border-radius:12px;background:var(--surface);border:1px solid var(--line);
  margin-bottom:10px;overflow:hidden;transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(23,224,168,.28)}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 20px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary i{color:var(--text-3);font-size:13px;transition:transform .24s var(--ease),color .24s var(--ease)}
.faq-item[open]{box-shadow:var(--sh-1);border-color:rgba(23,224,168,.28)}
.faq-item[open] summary i{transform:rotate(45deg);color:var(--primary)}
.faq-body{padding:0 20px 18px;font-size:15px;line-height:1.8;color:var(--text-2)}

/* ---------- cta band ---------- */
.cta-band{
  margin:64px 0 0;padding:40px;border-radius:20px;
  background:linear-gradient(120deg,rgba(23,224,168,.08),rgba(138,107,255,.08));
  border:1px solid var(--line);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:800;margin-bottom:8px}
.cta-band p{font-size:14px;color:var(--text-2);max-width:520px}
.cta-band__actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- footer ---------- */
.site-footer{margin-top:88px;background:#0A0714;border-top:1px solid var(--line);position:relative;z-index:1}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:32px;padding:56px 0 36px}
.footer-col h4{font-size:14px;font-weight:800;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col ul a:hover{color:var(--primary);transform:translateX(-2px)}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.75;margin:16px 0 16px;max-width:340px}
.sub-form{display:flex;flex-direction:column;gap:10px}
.sub-form label{font-size:14px;color:var(--text-2)}
.sub-row{display:flex;gap:10px}
.sub-row input{
  flex:1 1 auto;height:48px;padding:0 14px;border-radius:12px;
  background:#14102A;border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-row input::placeholder{color:var(--text-3)}
.sub-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(23,224,168,.18)}
.form-hint{font-size:12px;color:var(--text-3)}
.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);
}
.to-top{
  width:42px;height:42px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(23,224,168,.42);color:var(--primary);
}
.to-top:hover{background:var(--primary);color:#06121A;transform:translateY(-2px)}

/* ---------- responsive ---------- */
@media screen and (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .nav-main{display:none}
  .nav-toggle{display:inline-flex}
  .site-header.nav-open .nav-main{
    display:flex;flex-direction:column;align-items:stretch;gap:2px;
    position:absolute;top:68px;left:0;right:0;padding:14px 24px 18px;
    background:rgba(13,10,24,.97);border-bottom:1px solid var(--line);box-shadow:var(--sh-2);
  }
  .site-header.nav-open .nav-main a{padding:12px;font-size:15px}
  .site-header.nav-open .nav-main a.is-active::after{left:12px;right:auto;width:26px}
  .mega-panel{display:none}
  .mini-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cat-hero__inner{align-items:flex-start}
}
@media screen and (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  .nav-inner{height:56px;gap:14px}
  .brand__mark{width:34px;height:34px;font-size:13px}
  .brand__text{font-size:16px}
  .brand__sub{display:none}
  .site-header.nav-open .nav-main{top:56px;padding:12px 16px 16px}
  .mega-trigger{height:38px;padding:0 14px;font-size:13px}
  .mini-grid{grid-template-columns:1fr}
  .main-wrap{padding:36px 0 48px}
  .cat-hero{padding:30px 0 28px;min-height:0}
  .cat-hero__meta{width:100%;gap:18px;padding:16px}
  .cat-hero__meta dd{font-size:18px}
  .cta-band{padding:24px;margin-top:48px}
  .cta-band__actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;padding:40px 0 28px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sub-row{flex-direction:column}
  .sub-row .btn{width:100%}
  .faq-item summary{font-size:15.5px;padding:14px 16px}
  .faq-body{padding:0 16px 16px;font-size:14.5px}
  .section-title{font-size:20px}
}

/* roulang page: article */
:root{
  --bg-0:#0D0A18;
  --bg-1:#141029;
  --surface:#1B1636;
  --card:#221B40;
  --primary:#17E0A8;
  --primary-h:#3CF0BE;
  --primary-ink:#0B9E74;
  --accent:#FF6A3D;
  --violet:#8A6BFF;
  --paper:#F6F4FF;
  --ink:#171226;
  --text:#EDEAF6;
  --text-2:#A79FC2;
  --text-3:#6F6890;
  --line:rgba(237,234,246,.10);
  --line-2:rgba(23,18,38,.12);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-card:16px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(6,4,16,.45);
  --sh-2:0 14px 36px rgba(6,4,16,.55);
  --glow:0 0 0 1px rgba(23,224,168,.30), 0 12px 30px rgba(23,224,168,.14);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display",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);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.01em;
  overflow-x:hidden;
}
body.no-scroll{overflow:hidden}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
button{font-family:inherit;cursor:pointer}
input,select,textarea{font-family:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;font-weight:800;line-height:1.25;letter-spacing:-.01em}
p{margin:0}
figure{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
::selection{background:rgba(23,224,168,.28)}
.grid-container{max-width:var(--container);padding-left:32px;padding-right:32px;margin-left:auto;margin-right:auto}
.page-bg{position:fixed;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(620px 420px at 10% 6%, rgba(23,224,168,.075), transparent 70%),
    radial-gradient(760px 520px at 90% 20%, rgba(138,107,255,.085), transparent 72%);
}
.page-lines{position:fixed;inset:0;z-index:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(237,234,246,.032) 1px, transparent 1px),
    linear-gradient(90deg, rgba(237,234,246,.032) 1px, transparent 1px);
  background-size:56px 56px;
  mask-image:radial-gradient(1200px 700px at 50% 0%, #000 20%, transparent 85%);
  -webkit-mask-image:radial-gradient(1200px 700px at 50% 0%, #000 20%, transparent 85%);
}
main{position:relative;z-index:1}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,10,24,.74);
  border-bottom:1px solid var(--line);
  backdrop-filter:saturate(140%) blur(6px);
  transition:background .24s var(--ease), box-shadow .24s var(--ease);
}
.site-header.is-scrolled{background:rgba(13,10,24,.94);box-shadow:var(--sh-1)}
.nav-inner{display:flex;align-items:center;gap:28px;height:68px}
.brand{display:flex;align-items:center;gap:12px;flex-shrink:0}
.brand__mark{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px 12px 12px 4px;
  display:flex;align-items:center;justify-content:center;
  background:linear-gradient(140deg,var(--primary),var(--violet));
  color:#06121A;font-family:var(--font-num);font-weight:800;font-size:14px;letter-spacing:.02em;
  transition:transform .24s var(--ease);
}
.brand:hover .brand__mark{transform:rotate(2deg)}
.brand__text{display:flex;flex-direction:column;font-size:18px;font-weight:800;line-height:1.15;color:var(--text)}
.brand__sub{font-size:11px;font-weight:500;color:var(--text-3);letter-spacing:.06em;margin-top:3px}
.nav-main{display:flex;align-items:center;gap:26px;margin-left:8px}
.nav-main a{
  position:relative;font-size:15px;font-weight:600;color:var(--text-2);
  padding:22px 0;transition:color .2s var(--ease);
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:14px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-main a:hover{color:var(--text)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--primary)}
.nav-main a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  height:42px;padding:0 18px;border-radius:var(--r-pill);
  background:rgba(23,224,168,.10);border:1px solid rgba(23,224,168,.32);
  color:var(--primary);font-size:14px;font-weight:700;
  transition:background .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}
.mega-trigger:hover{background:rgba(23,224,168,.18);border-color:var(--primary);transform:translateY(-1px)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;
  width:min(860px, calc(100vw - 48px));
  display:grid;grid-template-columns:1.05fr 1.15fr 1fr;gap:24px;
  padding:24px;border-radius:var(--r-lg);
  background:var(--card);border:1px solid var(--line);box-shadow:var(--sh-2);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease), transform .2s var(--ease), visibility .2s var(--ease);
}
.nav-mega:hover .mega-panel,
.nav-mega:focus-within .mega-panel,
.nav-mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.08em;margin-bottom:14px}
.mega-col ul li{margin-bottom:10px}
.mega-col ul li a{display:inline-block;font-size:14px;color:var(--text-2);transition:color .18s var(--ease), transform .18s var(--ease)}
.mega-col ul li a:hover{color:var(--primary);transform:translateX(2px)}
.mega-post{display:block;padding:10px 12px;border-radius:12px;border:1px solid transparent;transition:background .18s var(--ease), border-color .18s var(--ease)}
.mega-post strong{display:block;font-size:14px;font-weight:700;color:var(--text);line-height:1.5}
.mega-post span{display:block;font-size:12px;color:var(--text-3);margin-top:4px;letter-spacing:.04em}
.mega-post:hover{background:rgba(23,224,168,.07);border-color:rgba(23,224,168,.22)}
.mega-post:hover strong{color:var(--primary)}
.mega-entry{
  display:flex;align-items:center;gap:12px;padding:12px;border-radius:12px;
  background:rgba(138,107,255,.10);border:1px solid rgba(138,107,255,.22);
  font-size:14px;font-weight:600;color:var(--text);margin-bottom:10px;
  transition:transform .2s var(--ease), border-color .2s var(--ease);
}
.mega-entry i{color:var(--violet)}
.mega-entry:hover{transform:translateY(-2px);border-color:rgba(138,107,255,.45)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  background:rgba(237,234,246,.06);border:1px solid var(--line);color:var(--text);font-size:16px;
  transition:background .2s var(--ease), color .2s var(--ease);
}
.nav-toggle:hover{background:rgba(23,224,168,.14);color:var(--primary)}
.nav-scrim{
  position:fixed;inset:0;background:rgba(0,0,0,.6);z-index:70;
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease), visibility .24s var(--ease);
}
.nav-scrim.is-open{opacity:1;visibility:visible}
.nav-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,84vw);z-index:80;
  background:var(--bg-1);border-left:1px solid var(--line);
  padding:24px 20px;overflow-y:auto;
  transform:translateX(100%);transition:transform .28s var(--ease);
}
.nav-drawer.is-open{transform:translateX(0)}
.nav-drawer h4{font-size:13px;color:var(--text-3);letter-spacing:.08em;margin:22px 0 12px}
.nav-drawer a{display:block;padding:13px 12px;border-radius:12px;font-size:15px;font-weight:600;color:var(--text-2)}
.nav-drawer a:hover,.nav-drawer a.is-active{background:rgba(23,224,168,.10);color:var(--primary)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:8px}
.drawer-close{width:40px;height:40px;border-radius:12px;background:rgba(237,234,246,.06);border:1px solid var(--line);color:var(--text)}

/* ============ 按钮族 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:var(--r-pill);
  font-size:15px;font-weight:700;letter-spacing:.01em;
  border:1px solid transparent;background:transparent;color:var(--text);
  transition:transform .2s var(--ease), box-shadow .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease), filter .2s var(--ease);
}
.btn--primary{
  background:linear-gradient(120deg,var(--primary),#12C795);
  color:#06121A;
}
.btn--primary:hover{transform:translateY(-2px);box-shadow:var(--glow);filter:brightness(1.06)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{border-color:var(--line);color:var(--text-2)}
.btn--ghost:hover{border-color:var(--primary);background:rgba(23,224,168,.08);color:var(--primary)}
.btn--sm{height:42px;padding:0 20px;font-size:14px}
.btn--text{
  height:auto;padding:0;border-radius:0;color:var(--primary);font-weight:700;
  border-bottom:1px solid rgba(23,224,168,.4);transition:border-color .2s var(--ease), color .2s var(--ease);
}
.btn--text:hover{color:var(--primary-h);border-color:var(--primary-h)}
.btn[disabled],.btn.is-disabled{opacity:.45;pointer-events:none}

/* ============ 徽章与标签 ============ */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 11px;border-radius:8px;font-size:12px;font-weight:600;letter-spacing:.04em;
  line-height:1.4;
}
.badge--violet{background:rgba(138,107,255,.14);color:#B5A2FF}
.badge--new{background:rgba(255,106,61,.16);color:#FF9A78}
.badge--line{border:1px solid var(--line);color:var(--text-2)}
.tag{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:var(--r-pill);
  border:1px solid var(--line);color:var(--text-2);font-size:13px;font-weight:600;
  transition:border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.tag:hover{border-color:rgba(23,224,168,.4);color:var(--primary);background:rgba(23,224,168,.06)}

/* ============ 面包屑 ============ */
.breadcrumb{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:22px 0 6px;font-size:13px;color:var(--text-3);
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px;color:var(--text-3)}
.breadcrumb span[aria-current]{color:var(--primary);
  max-width:420px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ============ 文章头部 ============ */
.article-main{padding-bottom:96px}
.article-head{max-width:860px;margin:18px auto 0;text-align:left}
.article-head .badge{margin-bottom:16px}
.article-head h1{
  font-size:clamp(28px,3.6vw,44px);line-height:1.22;font-weight:800;letter-spacing:-.02em;
  word-break:break-word;
}
.article-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  margin-top:20px;font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
.article-meta i{color:var(--primary);opacity:.75;margin-right:6px}
.article-meta a{color:var(--text-2)}
.article-meta a:hover{color:var(--primary)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:var(--text-3);opacity:.6}

/* ============ 正文纸面 ============ */
.article-paper{
  position:relative;max-width:760px;margin:36px auto 0;
  background:var(--paper);color:var(--ink);
  border-radius:20px;padding:48px;
  box-shadow:var(--sh-2);
}
.article-cover{
  border-radius:var(--r-lg);overflow:hidden;margin:0 0 34px;
  border:1px solid var(--line-2);
}
.article-cover img{width:100%;height:auto;object-fit:cover}
.article-cover figcaption{font-size:13px;color:#6D6688;text-align:center;padding:12px 0 14px;background:#EFEBFF}
@media (min-width:1024px){
  .article-cover{margin:-48px -40px 40px;border-radius:18px}
}
.article-body{font-size:17.5px;line-height:1.9;color:var(--ink)}
.article-body>*:first-child{margin-top:0}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:22px;font-weight:800;line-height:1.45;
  margin:40px 0 16px;padding-left:15px;
}
.article-body h2::before{content:"";position:absolute;left:0;top:.2em;width:4px;height:1.05em;border-radius:2px;background:var(--primary-ink)}
.article-body h3{font-size:19px;font-weight:700;margin:30px 0 12px;line-height:1.5}
.article-body h4{font-size:17px;font-weight:700;margin:24px 0 10px}
.article-body a{color:var(--primary-ink);border-bottom:1px solid rgba(11,158,116,.35)}
.article-body a:hover{border-bottom-color:var(--primary-ink)}
.article-body ul,.article-body ol{margin:0 0 1.2em;padding-left:1.35em;line-height:1.85}
.article-body ul{list-style:disc}
.article-body ol{list-style:decimal}
.article-body li{margin-bottom:.45em}
.article-body li::marker{color:var(--primary-ink);font-weight:700}
.article-body blockquote{
  margin:26px 0;padding:16px 20px;border-radius:0 12px 12px 0;
  background:rgba(138,107,255,.10);border-left:3px solid var(--violet);color:#3B3355;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:26px auto;height:auto}
.article-body figure{margin:26px 0}
.article-body figure img{margin:0 auto}
.article-body figcaption{font-size:13px;color:#6D6688;text-align:center;margin-top:10px}
.article-body table{
  display:block;overflow-x:auto;width:100%;border-collapse:collapse;
  font-size:15px;border:1px solid var(--line-2);border-radius:12px;margin:24px 0;
}
.article-body th,.article-body td{padding:11px 14px;border-bottom:1px solid var(--line-2);text-align:left;white-space:nowrap}
.article-body thead th{background:rgba(23,224,168,.16);font-weight:700}
.article-body tbody tr:nth-child(even){background:rgba(23,18,38,.035)}
.article-body pre{
  background:#161129;color:#EDEAF6;padding:18px 20px;border-radius:12px;
  font-size:14px;line-height:1.7;overflow-x:auto;margin:22px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.94em}
.article-body pre code{color:inherit;background:none;padding:0}
.article-body hr{border:0;border-top:1px solid var(--line-2);margin:32px 0}
.article-tags{
  display:flex;flex-wrap:wrap;gap:10px;align-items:center;
  margin-top:40px;padding-top:26px;border-top:1px solid var(--line-2);
}
.article-tags .label{font-size:13px;color:#6D6688;margin-right:4px;letter-spacing:.04em}
.article-tags a{
  display:inline-flex;align-items:center;height:30px;padding:0 13px;border-radius:var(--r-pill);
  border:1px solid rgba(23,18,38,.14);font-size:13px;font-weight:600;color:#4A4266;
  transition:border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.article-tags a:hover{border-color:var(--primary-ink);color:var(--primary-ink);background:rgba(11,158,116,.07)}

/* 空态 */
.empty-state{
  max-width:760px;margin:36px auto 0;padding:64px 24px;text-align:center;
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
}
.empty-state i{font-size:34px;color:rgba(23,224,168,.6)}
.empty-state p{margin:18px 0 22px;color:var(--text-2);font-size:15px}

/* ============ CTA 条 ============ */
.cta-bar{
  max-width:860px;margin:56px auto 0;
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
  padding:40px;border-radius:20px;border:1px solid var(--line);
  background:linear-gradient(120deg, rgba(23,224,168,.09), rgba(138,107,255,.09));
}
.cta-bar h2{font-size:22px;font-weight:800;margin-bottom:8px}
.cta-bar p{font-size:14px;color:var(--text-2);line-height:1.7}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-actions .btn{height:44px;padding:0 20px;font-size:14px}

/* ============ 上一篇 / 下一篇 ============ */
.prevnext{
  display:grid;grid-template-columns:1fr 1fr;gap:16px;
  max-width:860px;margin:32px auto 0;
}
.pn-card{
  display:block;padding:20px 22px;border-radius:var(--r-card);
  background:var(--card);border:1px solid var(--line);
  transition:transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.pn-card:hover{transform:translateY(-3px);border-color:rgba(23,224,168,.4);box-shadow:var(--sh-2)}
.pn-label{display:block;font-size:12px;color:var(--text-3);letter-spacing:.06em;margin-bottom:8px}
.pn-card strong{font-size:15px;font-weight:700;line-height:1.55;color:var(--text);display:block}
.pn-card.pn-next{text-align:right}

/* ============ 相关推荐 ============ */
.related{max-width:1200px;margin:80px auto 0}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:26px}
.section-head h2{font-size:clamp(22px,2.4vw,30px)}
.section-head p{font-size:14px;color:var(--text-2);margin-top:8px}
.rel-card{
  display:block;height:100%;padding:22px;border-radius:var(--r-card);
  background:var(--card);border:1px solid var(--line);
  transition:transform .22s var(--ease), border-color .22s var(--ease), box-shadow .22s var(--ease);
}
.rel-card:hover{transform:translateY(-4px);border-color:rgba(23,224,168,.4);box-shadow:var(--sh-2)}
.rel-card strong{display:block;font-size:16px;font-weight:700;line-height:1.5;margin:12px 0 10px}
.rel-card p{font-size:13.5px;color:var(--text-2);line-height:1.7;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

.back-row{max-width:860px;margin:44px auto 0;text-align:center}

/* ============ 页脚 ============ */
.site-footer{
  position:relative;z-index:1;margin-top:96px;
  background:#0A0714;border-top:1px solid var(--line);padding-top:64px;
}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.3fr;gap:40px}
.footer-col h4{font-size:14px;font-weight:700;color:var(--text);margin-bottom:18px;letter-spacing:.04em}
.footer-col ul li{margin-bottom:12px}
.footer-col ul li a{
  font-size:14px;color:var(--text-2);display:inline-block;
  transition:color .2s var(--ease), transform .2s var(--ease);
}
.footer-col ul li a:hover{color:var(--primary);transform:translateX(-2px)}
.footer-brand p{font-size:14px;color:var(--text-2);line-height:1.8;margin:18px 0 16px;max-width:320px}
.footer-brand .brand{margin-bottom:6px}
.tagline{display:flex;flex-wrap:wrap;gap:8px}
.sub-form{margin-top:4px}
.sub-form label{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px}
.sub-row{display:flex;gap:10px;flex-wrap:wrap}
.sub-row input{
  flex:1 1 160px;height:48px;padding:0 16px;border-radius:12px;
  background:#14102A;border:1px solid var(--line);color:var(--text);font-size:14px;
  transition:border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.sub-row input::placeholder{color:var(--text-3)}
.sub-row input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(23,224,168,.18)}
.form-hint{font-size:12.5px;color:var(--text-3);margin-top:10px}
.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  margin-top:56px;padding:24px 0 28px;border-top:1px solid var(--line);
  font-size:13px;color:var(--text-3);
}
.to-top{
  width:42px;height:42px;border-radius:50%;display:inline-flex;align-items:center;justify-content:center;
  border:1px solid rgba(23,224,168,.45);color:var(--primary);
  transition:background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}
.to-top:hover{background:var(--primary);color:#06121A;transform:translateY(-2px)}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .grid-container{padding-left:24px;padding-right:24px}
  .nav-main{display:none}
  .nav-mega{display:none}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .article-paper{padding:36px 28px;border-radius:18px}
  .article-body{font-size:17px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .related{margin-top:64px}
}
@media (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  .nav-inner{height:56px;gap:12px}
  .brand__mark{width:36px;height:36px;flex:0 0 36px;font-size:13px}
  .brand__text{font-size:16px}
  .brand__sub{display:none}
  .article-head h1{font-size:26px}
  .article-meta{gap:6px 14px}
  .article-paper{padding:20px;border-radius:16px;margin-top:24px}
  .article-body{font-size:16px;line-height:1.88}
  .article-body h2{font-size:20px;margin:32px 0 14px}
  .article-body h3{font-size:18px}
  .article-body table{font-size:14px}
  .cta-bar{padding:24px;margin-top:40px}
  .cta-bar h2{font-size:19px}
  .cta-actions{width:100%}
  .cta-actions .btn{flex:1 1 100%}
  .prevnext{grid-template-columns:1fr}
  .pn-card.pn-next{text-align:left}
  .breadcrumb span[aria-current]{max-width:200px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .site-footer{margin-top:64px;padding-top:44px}
  .footer-bottom{margin-top:36px}
}

/* roulang page: category2 */
:root{
  --bg-0:#0D0A18;
  --bg-1:#141029;
  --surface:#1B1636;
  --card:#221B40;
  --primary:#17E0A8;
  --primary-2:#3CF0BE;
  --accent:#FF6A3D;
  --violet:#8A6BFF;
  --paper:#F6F4FF;
  --ink:#171226;
  --text:#EDEAF6;
  --text-2:#A79FC2;
  --text-3:#6F6890;
  --line:rgba(237,234,246,.10);
  --line-strong:rgba(237,234,246,.18);
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --sh-1:0 6px 18px rgba(6,4,16,.45);
  --sh-2:0 14px 36px rgba(6,4,16,.55);
  --glow:0 0 0 1px rgba(23,224,168,.30),0 12px 30px rgba(23,224,168,.14);
  --ease:cubic-bezier(.2,.8,.2,1);
  --container:1200px;
  --font-sans:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-num:"Inter","SF Pro Display",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg-0);
  color:var(--text);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.78;
  letter-spacing:.01em;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none;transition:color .2s var(--ease)}
a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{
  outline:2px solid var(--primary);
  outline-offset:2px;
  border-radius:6px;
}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;letter-spacing:-.01em}
p{margin:0}
ul{margin:0;padding:0;list-style:none}
.grid-container{
  max-width:var(--container);
  width:100%;
  margin-left:auto;
  margin-right:auto;
  padding-left:32px;
  padding-right:32px;
}
.grid-x{display:flex;flex-wrap:wrap}
.grid-x>.cell{width:100%}
@media (min-width:640px){
  .medium-6{width:50%}
}
@media (min-width:1024px){
  .large-3{width:25%}
  .large-4{width:33.3333%}
  .large-8{width:66.6667%}
  .large-9{width:75%}
  .large-6{width:50%}
}
@media (min-width:1200px){
  .xlarge-3{width:25%}
  .xlarge-9{width:75%}
}
.brand{display:inline-flex;align-items:center;gap:12px}
.brand__mark{
  width:38px;height:38px;
  display:grid;place-items:center;
  border-radius:11px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--violet) 100%);
  color:#06121A;
  font-family:var(--font-num);
  font-weight:800;
  font-size:14px;
  letter-spacing:.02em;
  transition:transform .24s var(--ease);
  flex:none;
}
.brand:hover .brand__mark{transform:rotate(2deg)}
.brand__text{
  display:flex;flex-direction:column;
  font-size:18px;font-weight:800;line-height:1.2;letter-spacing:-.01em;color:var(--text);
}
.brand__sub{
  font-size:11px;font-weight:500;color:var(--text-3);
  letter-spacing:.12em;margin-top:2px;
}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:var(--r-pill);
  border:1px solid transparent;
  font-size:15px;font-weight:700;letter-spacing:.01em;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),border-color .2s var(--ease),color .2s var(--ease);
  cursor:pointer;
}
.btn--primary{background:var(--primary);color:#06121A}
.btn--primary:hover{background:var(--primary-2);transform:translateY(-2px);box-shadow:var(--glow)}
.btn--primary:active{transform:translateY(1px)}
.btn--ghost{background:transparent;color:var(--text);border-color:var(--line-strong)}
.btn--ghost:hover{border-color:var(--primary);background:rgba(23,224,168,.08);color:var(--primary-2);transform:translateY(-2px)}
.btn--ghost:active{transform:translateY(1px)}
.btn--sm{min-height:40px;padding:0 18px;font-size:14px}
.btn--text{
  min-height:auto;padding:0;border:0;background:none;color:var(--primary);
  font-weight:700;position:relative;justify-content:flex-start;
}
.btn--text::after{
  content:"";position:absolute;left:0;bottom:-3px;height:1px;width:0;
  background:var(--primary);transition:width .24s var(--ease);
}
.btn--text:hover::after{width:100%}
.btn:disabled,.btn.is-disabled{opacity:.45;cursor:not-allowed;transform:none;box-shadow:none}
.tag{
  display:inline-flex;align-items:center;
  padding:4px 10px;border-radius:8px;
  border:1px solid var(--line);
  font-size:12px;font-weight:600;letter-spacing:.04em;color:var(--text-2);
}
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:8px;
  font-size:12px;font-weight:600;letter-spacing:.04em;
}
.badge--violet{background:rgba(138,107,255,.14);color:#BBA8FF}
.badge--accent{background:rgba(255,106,61,.16);color:#FF9A78}
.badge--plain{background:rgba(237,234,246,.06);color:var(--text-2)}

/* ── Header ── */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(13,10,24,.92);
  border-bottom:1px solid var(--line);
  transition:box-shadow .24s var(--ease),background .24s var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--sh-1);background:rgba(13,10,24,.96)}
.site-header .grid-container{max-width:1320px}
.nav-inner{
  height:68px;display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.nav-main{display:flex;align-items:center;gap:26px}
.nav-main a{
  position:relative;font-size:15px;font-weight:600;color:var(--text-2);
  padding:6px 0;transition:color .2s var(--ease);
}
.nav-main a::after{
  content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav-main a:hover{color:var(--text)}
.nav-main a:hover::after{transform:scaleX(1)}
.nav-main a.is-active{color:var(--primary)}
.nav-main a.is-active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-mega{position:relative}
.mega-trigger{
  display:inline-flex;align-items:center;gap:8px;
  min-height:42px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line-strong);background:rgba(27,22,54,.7);
  color:var(--text);font-size:14px;font-weight:700;
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.mega-trigger:hover{border-color:var(--primary);color:var(--primary-2);background:rgba(23,224,168,.08)}
.mega-panel{
  position:absolute;top:calc(100% + 14px);right:0;
  width:760px;max-width:min(760px,88vw);
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--sh-2);
  padding:26px;
  display:grid;grid-template-columns:1.15fr 1.05fr 1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s var(--ease),transform .2s var(--ease),visibility .2s;
}
.nav-mega:hover .mega-panel,
.nav-mega:focus-within .mega-panel,
.nav-mega.is-open .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--text-3);
  text-transform:uppercase;margin-bottom:14px;
}
.mega-col ul li{margin-bottom:10px}
.mega-col ul a{
  font-size:14px;color:var(--text-2);display:inline-block;
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.mega-col ul a:hover{color:var(--primary);transform:translateX(2px)}
.mega-post{
  display:block;padding:10px 12px;border-radius:var(--r-sm);
  background:rgba(13,10,24,.45);border:1px solid transparent;margin-bottom:8px;
  transition:border-color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.mega-post strong{display:block;font-size:13.5px;font-weight:600;color:var(--text);line-height:1.5}
.mega-post span{font-size:12px;color:var(--text-3)}
.mega-post:hover{border-color:rgba(23,224,168,.35);background:rgba(23,224,168,.06);transform:translateX(2px)}
.mega-entry{
  display:flex;align-items:center;gap:10px;
  padding:11px 12px;border-radius:var(--r-sm);
  border:1px solid var(--line);margin-bottom:8px;
  font-size:13.5px;font-weight:600;color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.mega-entry i{color:var(--primary);font-size:14px}
.mega-entry:hover{border-color:rgba(23,224,168,.4);color:var(--text);background:rgba(23,224,168,.06)}
.nav-toggle{
  display:none;width:44px;height:44px;border-radius:12px;
  border:1px solid var(--line-strong);background:rgba(27,22,54,.7);color:var(--text);
  font-size:17px;align-items:center;justify-content:center;
}
.nav-toggle:hover{border-color:var(--primary);color:var(--primary)}

/* ── Drawer ── */
.drawer-mask{
  position:fixed;inset:0;background:rgba(0,0,0,.6);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:80;
}
.drawer-mask.is-open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;height:100%;width:min(320px,86vw);
  background:var(--surface);border-left:1px solid var(--line);
  transform:translateX(101%);transition:transform .28s var(--ease);
  z-index:90;padding:22px;overflow-y:auto;
}
.drawer.is-open{transform:translateX(0)}
.drawer__head{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}
.drawer__close{
  width:40px;height:40px;border-radius:12px;border:1px solid var(--line-strong);
  background:transparent;color:var(--text);font-size:16px;
}
.drawer__close:hover{border-color:var(--primary);color:var(--primary)}
.drawer nav a{
  display:block;padding:14px 4px;border-bottom:1px solid var(--line);
  font-size:15px;font-weight:600;color:var(--text-2);
}
.drawer nav a:hover,.drawer nav a.is-active{color:var(--primary)}

/* ── 紧凑标题带 ── */
.cat-hero{
  position:relative;
  border-bottom:1px solid var(--line);
  background:
    radial-gradient(760px 300px at 12% 0%,rgba(23,224,168,.09),transparent 62%),
    radial-gradient(620px 280px at 88% 10%,rgba(138,107,255,.08),transparent 62%),
    var(--bg-1);
  overflow:hidden;
}
.cat-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(237,234,246,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(237,234,246,.035) 1px,transparent 1px);
  background-size:56px 56px;
  pointer-events:none;
}
.cat-hero__photo{
  position:absolute;inset:0;background-image:url('/assets/images/backpic/back-2.png');
  background-size:cover;background-position:center;
  opacity:.22;pointer-events:none;
}
.cat-hero__inner{position:relative;padding:26px 0 30px}
.breadcrumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  font-size:13px;color:var(--text-3);letter-spacing:.02em;
}
.breadcrumb a{color:var(--text-3)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb i{font-size:10px;color:var(--text-3)}
.breadcrumb .current{color:var(--primary);font-weight:600}
.cat-hero__row{
  display:flex;justify-content:space-between;align-items:flex-end;gap:32px;margin-top:20px;flex-wrap:wrap;
}
.cat-hero h1{
  font-size:clamp(26px,3.1vw,40px);font-weight:800;line-height:1.18;letter-spacing:-.02em;
  max-width:760px;
}
.cat-hero h1 em{font-style:normal;color:var(--primary)}
.cat-hero__lead{
  margin-top:12px;color:var(--text-2);font-size:15.5px;max-width:700px;line-height:1.8;
}
.data-row{display:flex;gap:26px;flex-wrap:wrap;align-items:center;margin-top:18px}
.data-item{display:flex;flex-direction:column;gap:2px}
.data-item dt{font-size:12px;color:var(--text-3);letter-spacing:.08em}
.data-item dd{
  margin:0;font-family:var(--font-num);font-size:22px;font-weight:700;color:var(--primary);
  font-variant-numeric:tabular-nums;line-height:1.2;
}

/* ── 锚点目录条 ── */
.anchor-bar{
  border-bottom:1px solid var(--line);background:rgba(20,16,41,.72);
  position:sticky;top:68px;z-index:40;
}
.anchor-bar__scroll{
  display:flex;gap:10px;overflow-x:auto;padding:12px 0;
  scrollbar-width:none;
}
.anchor-bar__scroll::-webkit-scrollbar{display:none}
.anchor-chip{
  flex:none;display:inline-flex;align-items:center;gap:7px;
  padding:8px 15px;border-radius:var(--r-pill);
  border:1px solid var(--line);font-size:13.5px;font-weight:600;color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease);
}
.anchor-chip i{font-size:11px;color:var(--violet)}
.anchor-chip:hover{border-color:rgba(23,224,168,.45);color:var(--text);background:rgba(23,224,168,.07)}

/* ── 通用板块 ── */
.section{padding:88px 0}
.section--tight{padding:64px 0}
.section--alt{background:var(--bg-1);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{margin-bottom:34px;max-width:760px}
.section-head h2{
  font-size:clamp(22px,2.6vw,32px);font-weight:800;line-height:1.26;letter-spacing:-.02em;
}
.section-head p{margin-top:12px;color:var(--text-2);font-size:15.5px;line-height:1.8}
.section-head--row{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;max-width:none;flex-wrap:wrap}

/* ── 布局 ── */
.layout{display:flex;flex-wrap:wrap;gap:32px;align-items:flex-start}
.side-col{width:100%;flex:0 0 auto}
.main-col{width:100%;min-width:0;flex:1 1 0}
@media (min-width:1024px){
  .side-col{width:300px}
}
.side-sticky{position:sticky;top:132px}
@media (max-width:1023px){
  .side-sticky{position:static}
}

/* ── 左侧筛选与入口 ── */
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:20px;box-shadow:var(--sh-1);
}
.panel + .panel{margin-top:18px}
.panel__title{
  font-size:12px;font-weight:700;letter-spacing:.14em;color:var(--text-3);
  margin-bottom:14px;
}
.filter-group{display:flex;flex-wrap:wrap;gap:8px}
.filter-tag{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 14px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:rgba(13,10,24,.4);
  font-size:13.5px;font-weight:600;color:var(--text-2);
  transition:border-color .2s var(--ease),color .2s var(--ease),background .2s var(--ease),transform .2s var(--ease);
}
.filter-tag i{font-size:11px;color:var(--violet)}
.filter-tag:hover{border-color:rgba(23,224,168,.45);color:var(--text);background:rgba(23,224,168,.08);transform:translateX(2px)}
.filter-tag.is-active{border-color:var(--primary);color:var(--primary);background:rgba(23,224,168,.1)}
.sort-mock{display:flex;gap:8px;flex-wrap:wrap}
.sort-mock span{
  font-size:12.5px;color:var(--text-3);padding:6px 11px;border-radius:8px;
  border:1px dashed var(--line-strong);
}
.sort-mock span.on{color:var(--primary);border-style:solid;border-color:rgba(23,224,168,.4);background:rgba(23,224,168,.08)}
.side-link{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:13px 14px;border-radius:var(--r-md);
  border:1px solid var(--line);background:rgba(13,10,24,.36);margin-bottom:10px;
  transition:border-color .2s var(--ease),transform .2s var(--ease),background .2s var(--ease);
}
.side-link:last-child{margin-bottom:0}
.side-link strong{display:block;font-size:14px;font-weight:700;color:var(--text)}
.side-link span{display:block;font-size:12.5px;color:var(--text-3);margin-top:2px}
.side-link i{color:var(--primary);font-size:13px;transition:transform .2s var(--ease)}
.side-link:hover{border-color:rgba(23,224,168,.4);background:rgba(23,224,168,.06);transform:translateY(-2px)}
.side-link:hover i{transform:translateX(3px)}
.side-note{
  font-size:13px;color:var(--text-3);line-height:1.75;
  border-left:2px solid rgba(138,107,255,.5);padding-left:12px;
}

/* ── 纵向长条列表 ── */
.group-block + .group-block{margin-top:46px}
.group-block__head{
  display:flex;align-items:center;justify-content:space-between;gap:18px;
  padding-bottom:14px;margin-bottom:18px;border-bottom:1px solid var(--line);
}
.group-block__head h2{font-size:20px;font-weight:800;display:flex;align-items:center;gap:10px}
.group-block__head h2::before{
  content:"";width:4px;height:18px;border-radius:2px;
  background:linear-gradient(180deg,var(--primary),var(--violet));
}
.group-block__head span{font-size:13px;color:var(--text-3);font-family:var(--font-num);font-variant-numeric:tabular-nums}
.row-list{display:flex;flex-direction:column;gap:12px}
.list-row{
  display:flex;align-items:center;gap:18px;
  padding:16px;
  border-radius:var(--r-md);
  background:var(--card);
  border:1px solid var(--line);
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease),background .22s var(--ease);
}
.list-row:hover{
  border-color:rgba(23,224,168,.4);
  transform:translateY(-3px);
  box-shadow:var(--sh-2);
  background:linear-gradient(90deg,rgba(23,224,168,.05),rgba(34,27,64,1) 42%);
}
.list-row__thumb{
  flex:none;width:160px;height:100px;border-radius:var(--r-sm);overflow:hidden;
  background:linear-gradient(135deg,var(--surface),var(--bg-1));
}
.list-row__thumb img{width:100%;height:100%;object-fit:cover;transition:transform .3s var(--ease)}
.list-row:hover .list-row__thumb img{transform:scale(1.04)}
.list-row__body{flex:1 1 auto;min-width:0}
.list-row__title{
  font-size:16.5px;font-weight:700;line-height:1.45;color:var(--text);
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.list-row__desc{
  margin-top:7px;font-size:13.5px;color:var(--text-2);line-height:1.7;
  display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.list-row__meta{
  margin-top:10px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  font-size:12.5px;color:var(--text-3);letter-spacing:.02em;
}
.list-row__meta .dot{width:3px;height:3px;border-radius:50%;background:var(--text-3)}
.list-row__arrow{
  flex:none;width:36px;height:36px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line-strong);color:var(--text-2);font-size:12px;
  transition:border-color .22s var(--ease),color .22s var(--ease),transform .22s var(--ease),background .22s var(--ease);
}
.list-row:hover .list-row__arrow{
  border-color:var(--primary);color:var(--primary);transform:translateX(4px);background:rgba(23,224,168,.08);
}

/* ── 精选对照 ── */
.compare-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px}
.compare-card{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  padding:26px;
  position:relative;
  overflow:hidden;
  box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.compare-card::before{
  content:"";position:absolute;left:0;top:0;height:2px;width:100%;
  background:linear-gradient(90deg,var(--primary),rgba(138,107,255,.4));
  opacity:.7;
}
.compare-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:rgba(23,224,168,.3)}
.compare-card h3{font-size:19px;font-weight:800;margin-bottom:6px}
.compare-card__sub{font-size:13.5px;color:var(--text-3);margin-bottom:18px}
.compare-card ul li{
  position:relative;padding-left:24px;font-size:14.5px;color:var(--text-2);
  line-height:1.75;margin-bottom:12px;
}
.compare-card ul li:last-child{margin-bottom:0}
.compare-card ul li::before{
  content:"";position:absolute;left:0;top:9px;
  width:8px;height:8px;border-radius:3px;
  background:rgba(23,224,168,.35);border:1px solid rgba(23,224,168,.65);
}
.compare-card--alt::before{background:linear-gradient(90deg,var(--accent),rgba(255,106,61,.25))}
.compare-card--alt ul li::before{background:rgba(255,106,61,.3);border-color:rgba(255,106,61,.6)}
.compare-card .card-actions{margin-top:22px;display:flex;gap:12px;flex-wrap:wrap}

/* ── FAQ ── */
.faq{display:flex;flex-direction:column;gap:10px;max-width:900px}
.faq-item{
  background:var(--surface);border:1px solid var(--line);border-radius:12px;
  overflow:hidden;transition:border-color .22s var(--ease),background .22s var(--ease);
}
.faq-item[open]{border-color:rgba(23,224,168,.35);background:rgba(27,22,54,.92)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .ico{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;font-size:12px;
  border:1px solid var(--line-strong);color:var(--text-2);
  transition:transform .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.faq-item[open] summary .ico{transform:rotate(180deg);color:var(--primary);border-color:var(--primary)}
.faq-item .faq-a{
  padding:0 20px 20px;font-size:15px;line-height:1.8;color:var(--text-2);
}

/* ── CTA 条 ── */
.cta-band{
  border-radius:20px;
  border:1px solid var(--line);
  background:linear-gradient(120deg,rgba(23,224,168,.09),rgba(138,107,255,.09));
  padding:40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,2.2vw,26px);font-weight:800;line-height:1.3}
.cta-band p{margin-top:10px;font-size:14.5px;color:var(--text-2);max-width:620px}
.cta-band .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ── 返回目录 ── */
.back-row{display:flex;justify-content:center;margin-top:34px}

/* ── Footer ── */
.site-footer{background:#0A0714;border-top:1px solid var(--line);margin-top:0}
.footer-grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px;
  padding:64px 0 40px;
}
.footer-col h4{
  font-size:12.5px;font-weight:700;letter-spacing:.14em;color:var(--text-3);margin-bottom:16px;
}
.footer-brand p{margin-top:16px;font-size:14px;color:var(--text-2);line-height:1.8;max-width:340px}
.footer-col ul li{margin-bottom:11px}
.footer-col ul a{font-size:14px;color:var(--text-2);display:inline-block;transition:color .2s var(--ease),transform .2s var(--ease)}
.footer-col ul a:hover{color:var(--primary);transform:translateX(-2px)}
.tagline{display:flex;gap:8px;flex-wrap:wrap;margin-top:18px}
.sub-form label{display:block;font-size:14px;color:var(--text-2);margin-bottom:10px}
.sub-row{display:flex;gap:10px;flex-wrap:wrap}
.sub-row input{
  flex:1 1 160px;min-width:0;height:48px;padding:0 14px;
  background:#14102A;border:1px solid var(--line);border-radius:12px;
  color:var(--text);font-size:14px;font-family:inherit;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.sub-row input::placeholder{color:var(--text-3)}
.sub-row input:focus{
  outline:none;border-color:var(--primary);box-shadow:0 0 0 3px rgba(23,224,168,.18);
}
.form-hint{margin-top:10px;font-size:12.5px;color:var(--text-3);line-height:1.7}
.footer-bottom{
  border-top:1px solid var(--line);padding:20px 0 26px;
  display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
}
.footer-bottom p{font-size:13px;color:var(--text-3)}
.to-top{
  width:44px;height:44px;border-radius:50%;display:grid;place-items:center;
  border:1px solid var(--primary);color:var(--primary);font-size:14px;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.to-top:hover{background:var(--primary);color:#06121A;transform:translateY(-3px)}

/* ── 响应式 ── */
@media (max-width:1199px){
  .grid-container{padding-left:24px;padding-right:24px}
  .mega-panel{width:680px}
}
@media (max-width:1023px){
  .nav-main{display:none}
  .nav-toggle{display:inline-flex}
  .nav-actions .nav-mega{display:none}
  .section{padding:64px 0}
  .section--tight{padding:48px 0}
  .footer-grid{grid-template-columns:1fr 1fr;gap:30px;padding:48px 0 32px}
  .anchor-bar{top:56px}
  .side-sticky{top:auto}
}
@media (max-width:767px){
  .compare-grid{grid-template-columns:1fr}
  .list-row__thumb{width:120px;height:76px}
}
@media (max-width:639px){
  .grid-container{padding-left:16px;padding-right:16px}
  .nav-inner{height:56px}
  .brand__text{font-size:16px}
  .brand__sub{display:none}
  .cat-hero__inner{padding:18px 0 24px}
  .cat-hero__row{gap:20px}
  .data-row{gap:20px}
  .data-item dd{font-size:19px}
  .section{padding:56px 0}
  .section--tight{padding:40px 0}
  .list-row{flex-wrap:wrap;gap:14px;padding:14px}
  .list-row__thumb{width:100%;height:150px}
  .list-row__title{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .list-row__desc{white-space:normal;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical}
  .list-row__arrow{display:none}
  .cta-band{padding:24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .compare-card{padding:20px}
  .panel{padding:16px}
  .btn{width:100%}
  .cta-actions .btn{width:auto;flex:1 1 140px}
  .sub-row .btn{width:100%}
}