/* roulang page: index */
:root{
  --c-brand:#1E66E0;
  --c-brand-dark:#1550B8;
  --c-brand-soft:rgba(30,102,224,.08);
  --c-brand-line:rgba(30,102,224,.25);
  --c-accent:#FF9F1C;
  --c-accent-dark:#E8860A;
  --c-text:#0F1C2E;
  --c-text-2:#5A6B84;
  --c-text-3:#8A98AD;
  --c-bg:#F6F8FC;
  --c-card:#FFFFFF;
  --c-alt:#EEF3FB;
  --c-line:#E3E9F2;
  --c-divider:#EDF1F7;
  --c-ok:#16A389;
  --c-warn:#E4572E;
  --r-card:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-card:0 1px 2px rgba(15,28,46,.04), 0 8px 24px rgba(15,28,46,.06);
  --sh-hover:0 12px 32px rgba(30,102,224,.14);
  --sh-nav:0 10px 30px rgba(15,28,46,.10);
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  padding:0 0 0;
  font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
  font-size:17px;
  line-height:1.75;
  color:var(--c-text);
  background:var(--c-bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button{font-family:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4,p{margin:0;}
h1,h2,h3{font-weight:700;letter-spacing:-.5px;}
h1{font-size:48px;line-height:1.2;}
h2{font-size:34px;line-height:1.3;letter-spacing:-.3px;}
h3{font-size:22px;line-height:1.35;font-weight:600;letter-spacing:0;}
p{max-width:72ch;}
:focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}

/* ---------- 容器与区块 ---------- */
.container-x{width:100%;max-width:1200px;margin:0 auto;padding-left:32px;padding-right:32px;}
.section{padding-top:96px;padding-bottom:96px;}
.section-tight{padding-top:72px;padding-bottom:72px;}
.section-alt{background:var(--c-alt);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:32px;margin-bottom:40px;flex-wrap:wrap;}
.section-head p{font-size:15px;color:var(--c-text-2);max-width:520px;line-height:1.75;margin:0;}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;letter-spacing:.4px;color:var(--c-brand);background:var(--c-brand-soft);border-radius:var(--r-pill);padding:6px 14px;}

/* ---------- 导航 ---------- */
.nav-outer{position:sticky;top:16px;z-index:80;width:min(1120px,92%);margin:16px auto 0;}
.nav-bar{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  height:64px;padding:0 12px 0 16px;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--c-line);
  border-radius:var(--r-pill);
  box-shadow:var(--sh-nav);
  transition:box-shadow .25s ease-out, background .25s ease-out;
}
.nav-outer.scrolled .nav-bar{box-shadow:0 14px 36px rgba(15,28,46,.16);}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand-mark{width:36px;height:36px;border-radius:10px;background:var(--c-brand);display:flex;align-items:center;justify-content:center;flex:0 0 36px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;min-width:0;}
.brand-name{font-size:18px;font-weight:700;color:var(--c-text);letter-spacing:-.2px;white-space:nowrap;}
.brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.3px;white-space:nowrap;}
.nav-menu{display:flex;align-items:center;gap:6px;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;height:38px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--c-text-2);border-radius:var(--r-pill);
  transition:color .2s ease-out, background .2s ease-out;
}
.nav-link::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%) scaleX(0);
  width:20px;height:2px;border-radius:999px;background:var(--c-brand);transition:transform .2s ease-out;
}
.nav-link:hover{color:var(--c-brand);}
.nav-link:hover::after{transform:translateX(-50%) scaleX(1);}
.nav-link.active{color:var(--c-brand);background:var(--c-brand-soft);padding:0 14px;font-weight:600;}
.nav-link.active::after{display:none;}
.nav-actions{display:flex;align-items:center;gap:8px;}
.icon-btn{
  width:40px;height:40px;border-radius:50%;border:1px solid var(--c-line);background:#F2F5FA;
  display:inline-flex;align-items:center;justify-content:center;color:var(--c-text-2);cursor:pointer;
  transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out;
}
.icon-btn:hover{background:var(--c-brand-soft);color:var(--c-brand);}
.icon-btn:active{transform:scale(.96);}
#menuBtn{display:none;}
.mobile-menu{
  position:absolute;top:calc(100% + 12px);left:0;right:0;
  background:#fff;border:1px solid var(--c-line);border-radius:16px;
  box-shadow:var(--sh-nav);padding:10px;display:none;
}
.mobile-menu.open{display:block;}
.mobile-menu a{
  display:flex;align-items:center;justify-content:space-between;
  height:48px;padding:0 14px;border-radius:12px;font-size:15px;font-weight:500;color:var(--c-text-2);
}
.mobile-menu a:hover,.mobile-menu a.active{background:var(--c-brand-soft);color:var(--c-brand);}
.mobile-menu .m-cta{margin-top:8px;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:600;line-height:1;padding:15px 26px;border-radius:12px;
  border:1px solid transparent;cursor:pointer;transition:all .2s ease-out;white-space:nowrap;
}
.btn svg{transition:transform .2s ease-out;}
.btn-pill{border-radius:var(--r-pill);}
.btn-primary{background:var(--c-brand);color:#fff;}
.btn-primary:hover{background:var(--c-brand-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(30,102,224,.28);}
.btn-primary:active{transform:translateY(0);}
.btn-outline{background:#fff;color:var(--c-brand);border-color:var(--c-brand-line);}
.btn-outline:hover{background:var(--c-brand-soft);border-color:var(--c-brand);transform:translateY(-2px);}
.btn-accent{background:var(--c-accent);color:#fff;}
.btn-accent:hover{background:var(--c-accent-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,159,28,.32);}
.btn-white-line{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.btn-white-line:hover{background:rgba(255,255,255,.14);border-color:#fff;}
.btn-block{width:100%;}
.link-arrow{display:inline-flex;align-items:center;gap:6px;font-size:15px;font-weight:600;color:var(--c-brand);}
.link-arrow svg{transition:transform .2s ease-out;}
.link-arrow:hover svg{transform:translateX(3px);}
.link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}

/* ---------- 标签 / 徽章 ---------- */
.pill{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;letter-spacing:.4px;
  color:var(--c-brand);background:var(--c-brand-soft);
  border-radius:var(--r-pill);padding:5px 11px;
}
.pill-gray{color:var(--c-text-2);background:#F2F5FA;}
.pill-ok{color:var(--c-ok);background:rgba(22,163,137,.1);}

/* ---------- Hero ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(135deg,#F6F8FC 0%,#EAF1FC 100%);padding:72px 0 88px;}
.hero-deco{
  position:absolute;right:-180px;top:-120px;width:620px;height:620px;border-radius:50%;
  border:2px solid rgba(30,102,224,.10);pointer-events:none;
}
.hero-deco-2{
  position:absolute;right:-60px;top:120px;width:340px;height:340px;border-radius:50%;
  border:2px solid rgba(30,102,224,.08);pointer-events:none;
}
.hero-dots{
  position:absolute;left:0;bottom:0;width:280px;height:200px;pointer-events:none;
  background-image:radial-gradient(rgba(30,102,224,.16) 1px, transparent 1px);
  background-size:16px 16px;opacity:.5;
  -webkit-mask-image:linear-gradient(135deg,#000,transparent 70%);
  mask-image:linear-gradient(135deg,#000,transparent 70%);
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:55fr 45fr;gap:48px;align-items:center;}
.hero-left h1{margin:18px 0 0;color:var(--c-text);}
.hero-left h1 .hl{color:var(--c-brand);font-weight:700;background-image:linear-gradient(transparent 68%, rgba(255,159,28,.35) 68%);}
.hero-sub{margin-top:18px;font-size:18px;line-height:1.7;color:var(--c-text-2);max-width:34em;}
.hero-actions{display:flex;gap:14px;margin-top:30px;flex-wrap:wrap;}
.hero-trust{display:flex;flex-wrap:wrap;gap:10px 18px;margin-top:26px;}
.hero-trust li{display:flex;align-items:center;gap:7px;font-size:13px;color:var(--c-text-2);}
.hero-trust li svg{color:var(--c-brand);flex:0 0 16px;}
.hero-trust li+li{padding-left:18px;border-left:1px solid #D9E2F0;}
.hero-right{position:relative;}
.hero-img-main{
  border-radius:20px;overflow:hidden;box-shadow:0 20px 48px rgba(15,28,46,.14);
  aspect-ratio:16/11;background:var(--c-brand-soft);
}
.hero-img-main img{width:100%;height:100%;object-fit:cover;}
.hero-img-sub{
  position:absolute;left:-24px;bottom:-28px;width:220px;background:#fff;padding:4px;
  border-radius:12px;border:1px solid var(--c-line);box-shadow:0 12px 30px rgba(15,28,46,.14);
  transform:rotate(-3deg);
}
.hero-img-sub img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:9px;}

/* ---------- 价值主张带 ---------- */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.value-card{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:24px 22px;box-shadow:var(--sh-card);transition:all .2s ease-out;
}
.value-card:hover{transform:translateY(-4px);border-color:var(--c-brand-line);box-shadow:var(--sh-hover);}
.value-ico{
  width:40px;height:40px;border-radius:12px;background:var(--c-brand-soft);color:var(--c-brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.value-card h3{font-size:16px;font-weight:600;margin-bottom:8px;}
.value-card p{font-size:14px;line-height:1.7;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}

/* ---------- 功能分组 ---------- */
.feature-a{display:grid;grid-template-columns:60fr 40fr;gap:24px;}
.panel{
  background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
  box-shadow:var(--sh-card);padding:28px;
}
.feature-row{display:flex;gap:16px;padding:18px 0;border-bottom:1px solid var(--c-divider);}
.feature-row:last-child{border-bottom:0;padding-bottom:0;}
.feature-row:first-child{padding-top:0;}
.feature-row .f-ico{
  width:40px;height:40px;flex:0 0 40px;border-radius:12px;background:var(--c-brand-soft);
  color:var(--c-brand);display:flex;align-items:center;justify-content:center;
}
.feature-row h3{font-size:17px;font-weight:600;margin-bottom:6px;}
.feature-row p{font-size:14px;line-height:1.7;color:var(--c-text-2);}
.tag-row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px;}
.feature-side{display:flex;flex-direction:column;gap:16px;}
.feature-side .f-img{border-radius:16px;overflow:hidden;aspect-ratio:4/3;background:var(--c-brand-soft);}
.feature-side .f-img img{width:100%;height:100%;object-fit:cover;}
.feature-side ul{display:flex;flex-direction:column;gap:10px;margin-top:2px;}
.feature-side li{display:flex;gap:9px;font-size:14px;color:var(--c-text-2);line-height:1.6;}
.feature-side li svg{color:var(--c-ok);flex:0 0 16px;margin-top:3px;}
.feature-b{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;margin-top:24px;background:var(--c-alt);border-radius:20px;padding:28px;}
.mini-card{
  background:#fff;border-radius:var(--r-card);border:1px solid var(--c-line);
  border-top:3px solid var(--c-brand);padding:22px;transition:all .2s ease-out;
}
.mini-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-line);border-top-color:var(--c-brand);}
.mini-num{font-size:13px;font-weight:700;letter-spacing:1px;color:var(--c-brand);margin-bottom:12px;display:block;}
.mini-card h3{font-size:17px;font-weight:600;margin-bottom:8px;}
.mini-card p{font-size:14px;line-height:1.7;color:var(--c-text-2);}

/* ---------- 使用场景 ---------- */
.scene{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;padding:72px 0;}
.scene:nth-child(even) .scene-media{order:-1;}
.scene-text{position:relative;}
.scene-num{
  font-size:44px;font-weight:700;line-height:1;color:rgba(30,102,224,.12);
  letter-spacing:-1px;display:block;margin-bottom:10px;
}
.scene-text h3{font-size:22px;font-weight:600;margin-bottom:12px;}
.scene-text p{font-size:15px;line-height:1.8;color:var(--c-text-2);margin-bottom:16px;}
.scene-media{border-radius:16px;overflow:hidden;aspect-ratio:16/10;background:var(--c-brand-soft);box-shadow:var(--sh-card);}
.scene-media img{width:100%;height:100%;object-fit:cover;}
.scene-wrap{display:flex;flex-direction:column;}
.scene-wrap .scene{border-bottom:1px solid var(--c-divider);}
.scene-wrap .scene:last-child{border-bottom:0;}

/* ---------- 案例 ---------- */
.case-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.case-card{
  background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--sh-card);display:flex;flex-direction:column;
  transition:all .2s ease-out;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-line);}
.case-top{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:16px;}
.case-top strong{font-size:16px;font-weight:600;}
.case-desc{font-size:14px;line-height:1.75;color:var(--c-text-2);margin-bottom:20px;min-height:72px;}
.case-stats{display:flex;gap:28px;padding-top:16px;border-top:1px solid var(--c-divider);margin-bottom:16px;}
.case-stat span.num{display:block;font-size:28px;font-weight:700;color:var(--c-brand);font-variant-numeric:tabular-nums;line-height:1.2;}
.case-stat span.num.accent{color:var(--c-accent-dark);}
.case-stat small{font-size:12px;color:var(--c-text-3);}

/* ---------- 价格 ---------- */
.price-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;align-items:start;padding-top:16px;}
.price-card{
  position:relative;background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
  padding:30px 26px;box-shadow:var(--sh-card);transition:all .2s ease-out;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-line);}
.price-card.recommended{border:2px solid var(--c-brand);box-shadow:0 16px 40px rgba(30,102,224,.16);transform:translateY(-8px);}
.price-card.recommended:hover{transform:translateY(-12px);}
.price-badge{
  position:absolute;top:-14px;left:26px;background:var(--c-accent);color:#fff;
  font-size:12px;font-weight:700;letter-spacing:.4px;border-radius:var(--r-pill);padding:5px 12px;
}
.price-name{font-size:18px;font-weight:600;margin-bottom:6px;}
.price-desc{font-size:13px;color:var(--c-text-3);margin-bottom:16px;}
.price-num{font-size:40px;font-weight:700;line-height:1;color:var(--c-text);display:flex;align-items:baseline;gap:6px;letter-spacing:-1px;}
.price-num small{font-size:14px;font-weight:500;color:var(--c-text-3);letter-spacing:0;}
.price-list{margin:22px 0 24px;display:flex;flex-direction:column;gap:11px;}
.price-list li{display:flex;gap:9px;font-size:14px;color:var(--c-text-2);line-height:1.6;}
.price-list li svg{flex:0 0 16px;margin-top:3px;color:var(--c-brand);}
.price-list li.off{color:var(--c-text-3);text-decoration:line-through;}
.price-list li.off svg{color:#C6D0DE;}
.price-note{font-size:12px;color:var(--c-text-3);margin-top:20px;}

/* ---------- 资讯 / CMS ---------- */
.news-grid{display:grid;grid-template-columns:2fr 1fr;gap:24px;}
.news-main{
  position:relative;display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);transition:all .2s ease-out;
}
.news-main:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-line);}
.news-main:hover .news-title{color:var(--c-brand);}
.news-cover{position:relative;aspect-ratio:16/9;background:var(--c-brand-soft);overflow:hidden;}
.news-cover img{width:100%;height:100%;object-fit:cover;}
.news-cat{position:absolute;left:14px;top:14px;background:#fff;color:var(--c-brand);font-size:12px;font-weight:600;border-radius:var(--r-pill);padding:5px 11px;box-shadow:0 2px 8px rgba(15,28,46,.10);}
.news-body{padding:24px;display:flex;flex-direction:column;gap:10px;flex:1;}
.news-title{font-size:22px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease-out;}
.news-sum{font-size:14px;line-height:1.75;color:var(--c-text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:auto;padding-top:14px;border-top:1px solid var(--c-divider);font-size:14px;color:var(--c-text-3);}
.news-meta .date{display:inline-flex;align-items:center;gap:6px;}
.news-side{display:flex;flex-direction:column;gap:24px;}
.news-mini{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--c-line);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-card);flex:1;transition:all .2s ease-out;
}
.news-mini:hover{transform:translateY(-4px);box-shadow:var(--sh-hover);border-color:var(--c-brand-line);}
.news-mini:hover .news-mini-title{color:var(--c-brand);}
.news-mini .news-cover{aspect-ratio:16/9;}
.news-mini-body{padding:18px 20px;display:flex;flex-direction:column;gap:8px;flex:1;}
.news-mini-title{font-size:18px;font-weight:600;line-height:1.45;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;transition:color .2s ease-out;}
.news-mini .news-sum{font-size:13px;}
.news-mini .news-meta{font-size:13px;padding-top:12px;}
.empty-state{
  border:1px dashed var(--c-line);border-radius:var(--r-card);padding:48px 24px;
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;text-align:center;background:#fff;
}
.empty-state svg{color:var(--c-text-3);}
.empty-state p{font-size:15px;color:var(--c-text-2);}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:880px;margin:0 auto;display:flex;flex-direction:column;gap:12px;}
.faq-item{background:#fff;border:1px solid var(--c-line);border-radius:12px;transition:all .2s ease-out;overflow:hidden;}
.faq-item:hover{border-color:var(--c-brand-line);}
.faq-item.open{border-color:rgba(30,102,224,.2);box-shadow:0 8px 24px rgba(30,102,224,.08);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:20px 22px;background:transparent;border:0;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--c-text);line-height:1.5;
}
.faq-q:hover{color:var(--c-brand);}
.faq-icon{flex:0 0 22px;width:22px;height:22px;color:var(--c-brand);transition:transform .25s ease-out;display:flex;align-items:center;justify-content:center;}
.faq-item.open .faq-icon{transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .3s ease-out;}
.faq-a-inner{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--c-text-2);}

/* ---------- CTA + 表单 ---------- */
.cta-wrap{background:var(--c-alt);border-radius:24px;padding:44px;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.cta-left h2{font-size:32px;line-height:1.3;margin-bottom:14px;}
.cta-left p{font-size:14px;line-height:1.8;color:var(--c-text-2);}
.cta-list{margin-top:20px;display:flex;flex-direction:column;gap:9px;}
.cta-list li{display:flex;gap:9px;font-size:14px;color:var(--c-text-2);}
.cta-list svg{color:var(--c-ok);flex:0 0 16px;margin-top:3px;}
.form-card{background:#fff;border:1px solid var(--c-line);border-radius:16px;padding:24px;box-shadow:var(--sh-card);}
.form-row{margin-bottom:14px;}
.form-row label{display:block;font-size:13px;font-weight:600;color:var(--c-text-2);margin-bottom:7px;}
.form-row input,.form-row textarea{
  width:100%;height:48px;padding:0 14px;font-size:14px;color:var(--c-text);
  border:1px solid var(--c-line);border-radius:12px;background:#FBFCFE;
  font-family:inherit;transition:border-color .2s ease-out, box-shadow .2s ease-out, background .2s ease-out;
}
.form-row textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.6;}
.form-row input::placeholder,.form-row textarea::placeholder{color:var(--c-text-3);font-size:14px;}
.form-row input:focus,.form-row textarea:focus{outline:none;border-color:var(--c-brand);background:#fff;box-shadow:0 0 0 3px rgba(30,102,224,.14);}
.form-row.error input,.form-row.error textarea{border-color:var(--c-warn);}
.form-tip{font-size:12px;color:var(--c-text-3);margin-top:12px;line-height:1.7;}
.form-msg{font-size:13px;margin-top:10px;color:var(--c-ok);display:none;}
.form-msg.show{display:block;}

/* ---------- 页脚 ---------- */
footer.site-footer{background:#0F1C2E;color:rgba(255,255,255,.92);padding:64px 0 28px;margin-top:96px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1.2fr;gap:40px;}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
.footer-brand .brand-mark{background:var(--c-brand);}
.footer-brand .brand-name{color:#fff;}
.footer-brand .brand-sub{color:rgba(255,255,255,.55);}
.footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);max-width:340px;}
.footer-col h4{font-size:14px;font-weight:600;color:#fff;margin-bottom:16px;letter-spacing:.3px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a,.footer-col li{font-size:14px;color:rgba(255,255,255,.65);transition:color .2s ease-out;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:12px;color:rgba(255,255,255,.6);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:#fff;}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  h1{font-size:40px;}
  h2{font-size:30px;}
  .section{padding-top:72px;padding-bottom:72px;}
  .container-x{padding-left:24px;padding-right:24px;}
  .nav-menu{display:none;}
  #menuBtn{display:inline-flex;}
  .brand-name{font-size:16px;}
  .hero{padding:56px 0 72px;}
  .hero-inner{grid-template-columns:1fr;gap:56px;}
  .hero-sub{font-size:17px;}
  .hero-img-sub{left:auto;right:-8px;bottom:-24px;width:180px;}
  .value-grid{grid-template-columns:repeat(2,1fr);}
  .feature-a{grid-template-columns:1fr;}
  .feature-b{grid-template-columns:1fr;padding:22px;}
  .scene{grid-template-columns:1fr;gap:28px;padding:56px 0;}
  .scene:nth-child(even) .scene-media{order:0;}
  .case-grid{grid-template-columns:repeat(2,1fr);}
  .price-grid{grid-template-columns:1fr;}
  .price-card.recommended{transform:none;}
  .price-card.recommended:hover{transform:translateY(-4px);}
  .news-grid{grid-template-columns:1fr;}
  .cta-wrap{grid-template-columns:1fr;padding:32px;gap:32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  footer.site-footer{margin-top:72px;}
}
@media (max-width:639px){
  h1{font-size:32px;letter-spacing:-.3px;}
  h2{font-size:26px;}
  h3{font-size:20px;}
  body{font-size:16px;}
  .container-x{padding-left:16px;padding-right:16px;}
  .section{padding-top:56px;padding-bottom:56px;}
  .nav-outer{width:calc(100% - 24px);margin-top:12px;}
  .brand-sub{display:none;}
  .brand-name{font-size:15px;max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  .nav-actions .btn-accent-pill-text{display:none;}
  .hero-actions{flex-direction:column;align-items:stretch;}
  .hero-actions .btn{width:100%;}
  .hero-trust li+li{padding-left:0;border-left:0;}
  .hero-trust{flex-direction:column;gap:8px;}
  .hero-img-main{aspect-ratio:16/11;max-height:320px;}
  .hero-img-sub{display:none;}
  .value-grid{grid-template-columns:1fr;}
  .case-grid{grid-template-columns:1fr;}
  .case-desc{min-height:0;}
  .news-side{gap:20px;}
  .cta-wrap{padding:24px;}
  .cta-left h2{font-size:24px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-desc{max-width:none;}
  .faq-q{font-size:15px;padding:18px;}
  .faq-a-inner{padding:0 18px 18px;}
  .section-head{margin-bottom:28px;}
}

/* roulang page: article */
:root{
    --c-brand:#1E66E0;
    --c-brand-dark:#1550B8;
    --c-brand-soft:rgba(30,102,224,.08);
    --c-brand-line:rgba(30,102,224,.25);
    --c-accent:#FF9F1C;
    --c-accent-dark:#E8860A;
    --c-text:#0F1C2E;
    --c-text-2:#5A6B84;
    --c-text-3:#8A98AD;
    --c-bg:#F6F8FC;
    --c-card:#FFFFFF;
    --c-alt:#EEF3FB;
    --c-line:#E3E9F2;
    --c-divide:#EDF1F7;
    --c-ok:#16A389;
    --c-warn:#E4572E;
    --r-card:16px;
    --r-md:12px;
    --sh-card:0 1px 2px rgba(15,28,46,.04),0 8px 24px rgba(15,28,46,.06);
    --sh-card-hover:0 12px 32px rgba(30,102,224,.14);
    --sh-nav:0 10px 30px rgba(15,28,46,.10);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:17px;
    line-height:1.75;
    color:var(--c-text);
    background:var(--c-bg);
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;cursor:pointer;border:none;background:none;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:6px;}

  .container-x{
    width:100%;
    max-width:1200px;
    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:16px;padding-right:16px;}
  }

  /* ============ 导航 ============ */
  .nav-wrap{
    position:sticky;
    top:16px;
    z-index:80;
    display:flex;
    justify-content:center;
    padding:0 16px;
    margin-top:16px;
    pointer-events:none;
  }
  .nav-bar{
    pointer-events:auto;
    width:min(1120px,100%);
    height:64px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:16px;
    padding:0 12px 0 16px;
    border-radius:999px;
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border:1px solid var(--c-line);
    box-shadow:var(--sh-nav);
    transition:box-shadow .2s ease-out;
  }
  .nav-bar.scrolled{box-shadow:0 14px 36px rgba(15,28,46,.16);}
  .brand{display:flex;align-items:center;gap:10px;flex:none;}
  .brand-mark{
    width:36px;height:36px;flex:none;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:10px;
    background:var(--c-brand);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;}
  .brand-name{font-size:18px;font-weight:700;color:var(--c-text);letter-spacing:-.2px;white-space:nowrap;}
  .brand-sub{font-size:11px;color:var(--c-text-3);letter-spacing:.3px;white-space:nowrap;}
  .nav-menu{display:flex;align-items:center;gap:28px;}
  .nav-link{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:var(--c-text-2);
    padding:8px 2px;
    transition:color .18s ease-out;
    white-space:nowrap;
  }
  .nav-link::after{
    content:"";
    position:absolute;
    left:50%;bottom:0;
    width:0;height:2px;
    border-radius:2px;
    background:var(--c-brand);
    transform:translateX(-50%);
    transition:width .22s ease-out;
  }
  .nav-link:hover{color:var(--c-brand);}
  .nav-link:hover::after{width:100%;}
  .nav-link.active{
    color:var(--c-brand);
    background:var(--c-brand-soft);
    padding:8px 14px;
    border-radius:999px;
  }
  .nav-link.active::after{display:none;}
  .nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
  .icon-btn{
    width:40px;height:40px;
    display:inline-flex;align-items:center;justify-content:center;
    border-radius:999px;
    background:var(--c-brand-soft);
    color:var(--c-brand);
    transition:background .18s ease-out,transform .18s ease-out;
  }
  .icon-btn:hover{background:rgba(30,102,224,.16);transform:translateY(-1px);}
  #menuBtn{display:none;}
  .mobile-menu{
    pointer-events:auto;
    position:absolute;
    left:50%;
    transform:translateX(-50%);
    top:88px;
    width:calc(100% - 32px);
    max-width:1120px;
    background:#fff;
    border:1px solid var(--c-line);
    border-radius:16px;
    box-shadow:var(--sh-nav);
    padding:12px;
    display:none;
    flex-direction:column;
    gap:4px;
    z-index:79;
  }
  .mobile-menu.open{display:flex;}
  .mm-link{
    display:flex;align-items:center;
    min-height:48px;padding:0 14px;
    border-radius:12px;
    font-size:15px;font-weight:500;color:var(--c-text);
    transition:background .16s ease-out,color .16s ease-out;
  }
  .mm-link:hover,.mm-link.active{background:var(--c-brand-soft);color:var(--c-brand);}
  .mm-cta{margin-top:8px;width:100%;justify-content:center;display:flex;}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;
    padding:13px 26px;
    border-radius:12px;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out;
    white-space:nowrap;
    border:1px solid transparent;
  }
  .btn-pill{border-radius:999px;}
  .btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 6px 16px rgba(255,159,28,.28);}
  .btn-accent:hover{background:var(--c-accent-dark);transform:translateY(-2px);box-shadow:0 10px 22px rgba(255,159,28,.34);}
  .btn-primary{background:var(--c-brand);color:#fff;}
  .btn-primary:hover{background:var(--c-brand-dark);transform:translateY(-2px);box-shadow:0 10px 24px rgba(30,102,224,.28);}
  .btn-ghost{background:#fff;color:var(--c-brand);border:1px solid var(--c-brand-line);}
  .btn-ghost:hover{background:var(--c-brand-soft);border-color:var(--c-brand);}
  .btn-line{background:transparent;color:var(--c-text-2);border:1px solid var(--c-line);}
  .btn-line:hover{color:var(--c-brand);border-color:var(--c-brand-line);background:var(--c-brand-soft);}
  .btn:active{transform:translateY(0) scale(.99);}
  .btn[disabled]{opacity:.5;pointer-events:none;}

  .text-link{
    display:inline-flex;align-items:center;gap:6px;
    color:var(--c-brand);font-size:14px;font-weight:600;
  }
  .text-link span{transition:transform .2s ease-out;}
  .text-link:hover{text-decoration:underline;text-underline-offset:3px;}
  .text-link:hover span{transform:translateX(3px);}

  /* ============ 面包屑 ============ */
  .crumb-bar{padding:34px 0 0;}
  .crumb{
    display:flex;flex-wrap:wrap;align-items:center;gap:8px;
    font-size:14px;color:var(--c-text-3);
  }
  .crumb a{color:var(--c-text-2);transition:color .16s ease-out;}
  .crumb a:hover{color:var(--c-brand);}
  .crumb-sep{color:rgba(30,102,224,.4);}
  .crumb-cur{color:var(--c-text-3);}

  /* ============ 文章布局 ============ */
  .article-shell{padding:32px 0 96px;}
  .article-grid{
    display:grid;
    grid-template-columns:minmax(0,760px) 300px;
    gap:48px;
    align-items:start;
  }
  .article-main{
    background:var(--c-card);
    border:1px solid var(--c-line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-card);
    padding:40px 44px 44px;
    min-width:0;
  }
  .article-head{border-bottom:1px solid var(--c-divide);padding-bottom:24px;margin-bottom:28px;}
  .article-title{
    font-size:32px;
    font-weight:600;
    line-height:1.4;
    letter-spacing:-.3px;
    color:var(--c-text);
    margin-bottom:18px;
    word-break:break-word;
  }
  .article-meta{
    display:flex;flex-wrap:wrap;align-items:center;gap:10px;
    font-size:14px;color:var(--c-text-3);line-height:2;
  }
  .pill-cat{
    display:inline-flex;align-items:center;
    font-size:12px;font-weight:600;letter-spacing:.4px;
    padding:5px 12px;border-radius:999px;
    background:var(--c-brand-soft);color:var(--c-brand);
  }
  .meta-dot{color:var(--c-line);}

  /* ============ 正文排版 ============ */
  .article-body{
    font-size:17px;
    line-height:1.9;
    color:#24354b;
    max-width:760px;
    overflow-wrap:break-word;
  }
  .article-body p{margin:0 0 20px;}
  .article-body h2{
    font-size:24px;font-weight:600;line-height:1.45;color:var(--c-text);
    margin:40px 0 16px;padding-left:14px;border-left:4px solid var(--c-brand);
  }
  .article-body h3{
    font-size:19px;font-weight:600;line-height:1.5;color:var(--c-text);
    margin:28px 0 12px;
  }
  .article-body h4{font-size:17px;font-weight:600;color:var(--c-text);margin:22px 0 10px;}
  .article-body ul,.article-body ol{margin:0 0 20px;padding-left:22px;}
  .article-body ul{list-style:disc;}
  .article-body ol{list-style:decimal;}
  .article-body li{margin:10px 0;padding-left:2px;}
  .article-body ul li::marker{color:var(--c-brand);}
  .article-body ol li::marker{color:var(--c-brand);font-weight:600;}
  .article-body blockquote{
    margin:24px 0;
    padding:20px;
    background:var(--c-alt);
    border-left:3px solid var(--c-brand);
    border-radius:0 12px 12px 0;
    color:var(--c-text-2);
    font-size:16px;
  }
  .article-body img{border-radius:12px;margin:24px auto;}
  .article-body a{color:var(--c-brand);text-decoration:underline;text-underline-offset:3px;}
  .article-body a:hover{color:var(--c-brand-dark);}
  .article-body figure{margin:24px 0;}
  .article-body figcaption{font-size:13px;color:var(--c-text-3);text-align:center;margin-top:10px;}
  .article-body table{width:100%;border-collapse:collapse;font-size:15px;margin:24px 0;display:block;overflow-x:auto;}
  .article-body th,.article-body td{border:1px solid var(--c-line);padding:10px 14px;text-align:left;}
  .article-body th{background:var(--c-alt);font-weight:600;}
  .article-body code{background:var(--c-alt);border-radius:6px;padding:2px 6px;font-size:15px;}

  .article-end{
    margin-top:40px;padding-top:24px;border-top:1px solid var(--c-divide);
    display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
  }
  .article-end .end-note{font-size:13px;color:var(--c-text-3);max-width:420px;}

  .empty-block{
    border:1px dashed var(--c-line);
    border-radius:var(--r-card);
    padding:52px 24px;
    text-align:center;
    background:var(--c-alt);
  }
  .empty-block .empty-icon{
    width:52px;height:52px;margin:0 auto 16px;
    display:flex;align-items:center;justify-content:center;
    border-radius:14px;background:#fff;color:var(--c-brand);
    border:1px solid var(--c-line);
  }
  .empty-block h2{font-size:20px;font-weight:600;color:var(--c-text);margin-bottom:8px;}
  .empty-block p{font-size:15px;color:var(--c-text-2);margin-bottom:22px;}

  /* ============ 侧栏 ============ */
  .article-side{
    position:sticky;
    top:96px;
    display:flex;
    flex-direction:column;
    gap:20px;
  }
  .side-card{
    background:var(--c-card);
    border:1px solid var(--c-line);
    border-radius:var(--r-card);
    box-shadow:var(--sh-card);
    padding:22px;
  }
  .side-card h3{
    font-size:16px;font-weight:600;color:var(--c-text);
    padding-bottom:14px;margin-bottom:6px;
    border-bottom:1px solid var(--c-divide);
  }
  .side-list li + li{border-top:1px solid var(--c-divide);}
  .side-list a{
    display:block;padding:14px 0;
    font-size:15px;font-weight:500;line-height:1.55;color:var(--c-text);
    transition:color .18s ease-out;
  }
  .side-list a:hover{color:var(--c-brand);}
  .side-list .side-date{display:block;font-size:13px;color:var(--c-text-3);margin-top:6px;font-weight:400;}
  .side-actions{display:flex;flex-direction:column;gap:12px;margin-top:16px;}
  .side-actions .btn{width:100%;}
  .side-tip{font-size:13px;color:var(--c-text-3);line-height:1.7;margin-top:14px;}

  /* ============ 页脚 ============ */
  .site-footer{background:#0F1C2E;color:rgba(255,255,255,.92);padding:72px 0 28px;margin-top:0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:18px;}
  .footer-brand .brand-name{color:#fff;}
  .footer-brand .brand-sub{color:rgba(255,255,255,.55);}
  .footer-desc{font-size:14px;line-height:1.85;color:rgba(255,255,255,.65);max-width:34ch;}
  .footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-col ul li{font-size:14px;line-height:1.9;color:rgba(255,255,255,.65);margin-bottom:10px;}
  .footer-col ul li a{color:rgba(255,255,255,.65);transition:color .18s ease-out;}
  .footer-col ul li a:hover{color:#fff;}
  .footer-bottom{
    margin-top:56px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.12);
    display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
    font-size:12px;color:rgba(255,255,255,.6);
  }
  .footer-bottom a{color:rgba(255,255,255,.75);text-decoration:underline;text-underline-offset:3px;}

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .nav-menu{display:none;}
    #menuBtn{display:inline-flex;}
    .article-grid{grid-template-columns:minmax(0,1fr);gap:28px;}
    .article-side{position:static;}
    .article-main{padding:32px 28px 34px;}
    .article-title{font-size:28px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .site-footer{padding:56px 0 24px;}
  }
  @media (max-width:639px){
    body{font-size:16px;}
    .nav-bar{height:58px;padding:0 8px 0 12px;}
    .brand-name{font-size:15px;}
    .brand-sub{font-size:10px;}
    .brand-mark{width:32px;height:32px;border-radius:9px;}
    .nav-actions .btn-accent{padding:10px 16px !important;font-size:13px !important;}
    .mobile-menu{top:80px;}
    .article-shell{padding:24px 0 64px;}
    .article-main{padding:26px 20px 28px;border-radius:14px;}
    .article-title{font-size:26px;}
    .article-body{font-size:16px;line-height:1.85;}
    .article-body h2{font-size:21px;}
    .article-body h3{font-size:18px;}
    .article-end{flex-direction:column;align-items:flex-start;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .footer-desc{max-width:none;}
    .footer-bottom{flex-direction:column;}
  }

/* roulang page: category1 */
:root{
    --c-brand:#1E66E0;
    --c-brand-h:#1550B8;
    --c-brand-08:rgba(30,102,224,.08);
    --c-brand-25:rgba(30,102,224,.25);
    --c-accent:#FF9F1C;
    --c-accent-h:#E8860A;
    --t-1:#0F1C2E;
    --t-2:#5A6B84;
    --t-3:#8A98AD;
    --bg:#F6F8FC;
    --bg-alt:#EEF3FB;
    --card:#FFFFFF;
    --line:#E3E9F2;
    --line-2:#EDF1F7;
    --ok:#16A389;
    --warn:#E4572E;
    --r-card:16px;
    --r-sm:12px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,28,46,.04),0 8px 24px rgba(15,28,46,.06);
    --sh-2:0 12px 32px rgba(30,102,224,.14);
    --sh-nav:0 10px 30px rgba(15,28,46,.10);
    --ease:200ms ease-out;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:17px;
    line-height:1.75;
    color:var(--t-1);
    background:var(--bg);
  }
  img{display:block;max-width:100%;}
  a{color:var(--c-brand);text-decoration:none;transition:color var(--ease);}
  button,input,textarea,select{font:inherit;color:inherit;}
  h1,h2,h3,h4,p{margin:0;}
  ul,ol{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;border-radius:4px;}

  .container-x{max-width:1200px;margin:0 auto;padding:0 32px;}

  /* ---------- 悬浮胶囊导航 ---------- */
  .nav-wrap{position:sticky;top:16px;z-index:60;padding:0 16px;margin-top:16px;}
  .nav-bar{
    width:min(1120px,100%);
    margin:0 auto;
    height:64px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:18px;
    padding:0 12px 0 16px;
    border-radius:var(--r-pill);
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border:1px solid var(--line);
    box-shadow:var(--sh-nav);
    transition:box-shadow var(--ease),background var(--ease);
  }
  .nav-bar.is-scrolled{box-shadow:0 14px 38px rgba(15,28,46,.16);background:rgba(255,255,255,.94);}
  .brand{display:flex;align-items:center;gap:10px;min-width:0;color:var(--t-1);}
  .brand-mark{
    width:36px;height:36px;flex:none;border-radius:10px;background:var(--c-brand);
    display:inline-flex;align-items:center;justify-content:center;
    box-shadow:0 4px 12px rgba(30,102,224,.28);
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0;}
  .brand-name{font-size:18px;font-weight:700;color:var(--t-1);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .brand-sub{font-size:11px;color:var(--t-3);letter-spacing:.3px;}
  .nav-menu{display:flex;align-items:center;gap:28px;}
  .nav-link{
    position:relative;
    font-size:15px;
    font-weight:500;
    color:var(--t-2);
    padding:6px 2px;
    white-space:nowrap;
    transition:color var(--ease);
  }
  .nav-link::after{
    content:"";position:absolute;left:50%;bottom:-2px;width:0;height:2px;
    border-radius:2px;background:var(--c-brand);transform:translateX(-50%);
    transition:width var(--ease);
  }
  .nav-link:hover{color:var(--c-brand);}
  .nav-link:hover::after{width:16px;}
  .nav-link.active{
    color:var(--c-brand);
    background:var(--c-brand-08);
    padding:8px 14px;
    border-radius:var(--r-pill);
  }
  .nav-link.active::after{display:none;}
  .nav-actions{display:flex;align-items:center;gap:10px;}
  .icon-btn{
    width:40px;height:40px;flex:none;border-radius:50%;border:1px solid var(--line);
    background:var(--bg);color:var(--t-2);display:none;align-items:center;justify-content:center;
    cursor:pointer;transition:all var(--ease);
  }
  .icon-btn:hover{background:var(--c-brand-08);color:var(--c-brand);border-color:var(--c-brand-25);}

  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    border-radius:var(--r-sm);border:1px solid transparent;
    font-size:15px;font-weight:600;padding:13px 24px;cursor:pointer;
    transition:all var(--ease);text-align:center;
  }
  .btn-pill{border-radius:var(--r-pill);}
  .btn-primary{background:var(--c-brand);color:#fff;box-shadow:0 8px 20px rgba(30,102,224,.22);}
  .btn-primary:hover{background:var(--c-brand-h);transform:translateY(-2px);box-shadow:0 12px 26px rgba(30,102,224,.3);}
  .btn-primary:active{transform:translateY(0);}
  .btn-accent{background:var(--c-accent);color:#fff;box-shadow:0 8px 20px rgba(255,159,28,.28);}
  .btn-accent:hover{background:var(--c-accent-h);transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,159,28,.34);}
  .btn-ghost{background:#fff;color:var(--c-brand);border-color:var(--c-brand-25);}
  .btn-ghost:hover{background:var(--c-brand-08);border-color:var(--c-brand);transform:translateY(-2px);}
  .btn-white-ghost{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.7);}
  .btn-white-ghost:hover{background:rgba(255,255,255,.16);border-color:#fff;transform:translateY(-2px);}
  .btn-block{width:100%;}
  .btn:disabled,.btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}
  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--c-brand);}
  .text-link svg{transition:transform var(--ease);}
  .text-link:hover svg{transform:translateX(3px);}
  .text-link:hover{text-decoration:underline;text-underline-offset:3px;}

  /* ---------- 移动菜单 ---------- */
  .mobile-menu{
    display:none;
    position:absolute;left:50%;top:calc(100% + 12px);transform:translateX(-50%);
    width:100%;max-width:420px;background:#fff;border:1px solid var(--line);
    border-radius:var(--r-card);box-shadow:0 18px 44px rgba(15,28,46,.16);
    padding:12px;z-index:70;
  }
  .mobile-menu.open{display:block;}
  .mobile-menu a{
    display:flex;align-items:center;min-height:48px;padding:0 14px;border-radius:var(--r-sm);
    font-size:15px;font-weight:500;color:var(--t-2);transition:all var(--ease);
  }
  .mobile-menu a:hover,.mobile-menu a.active{background:var(--c-brand-08);color:var(--c-brand);}
  .mobile-menu .btn{margin-top:10px;}

  /* ---------- 分类页 Banner ---------- */
  .page-banner{
    position:relative;
    margin:24px auto 0;
    width:min(1440px,100%);
    padding:0 32px;
  }
  .banner-inner{
    position:relative;overflow:hidden;border-radius:20px;
    min-height:260px;
    display:flex;align-items:flex-start;
    padding:28px 40px 40px;
    background-image:url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    box-shadow:var(--sh-1);
  }
  .banner-inner::before{
    content:"";position:absolute;inset:0;
    background:linear-gradient(180deg,rgba(30,102,224,.94) 0%,rgba(30,102,224,.74) 62%,rgba(30,102,224,.22) 100%);
  }
  .banner-content{position:relative;z-index:2;max-width:760px;}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.72);}
  .crumb a{color:rgba(255,255,255,.92);}
  .crumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .crumb .sep{color:rgba(255,255,255,.5);}
  .crumb .current{color:rgba(255,255,255,.7);}
  .banner-title{
    margin-top:20px;
    font-size:32px;font-weight:700;line-height:1.25;letter-spacing:-.4px;color:#fff;
  }
  .banner-lead{margin-top:10px;font-size:14px;color:rgba(255,255,255,.86);}
  .banner-actions{margin-top:22px;}

  /* ---------- 主体布局 ---------- */
  .page-main{padding:64px 0 96px;}
  .page-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start;}

  .toc{
    position:sticky;top:96px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:18px 14px;box-shadow:var(--sh-1);
  }
  .toc-title{font-size:13px;font-weight:600;color:var(--t-3);letter-spacing:.6px;padding:0 6px 10px;}
  .toc-list{display:flex;flex-direction:column;gap:4px;}
  .toc-list a{
    display:block;font-size:14px;color:var(--t-2);
    padding:10px 14px;border-radius:var(--r-sm);
    border-left:3px solid transparent;
    transition:all var(--ease);
  }
  .toc-list a:hover{background:var(--bg);color:var(--c-brand);}
  .toc-list a.is-current{
    color:var(--c-brand);background:var(--c-brand-08);
    border-left-color:var(--c-brand);font-weight:600;
  }

  .content-col{min-width:0;}
  .toc-target{scroll-margin-top:100px;}
  .toc-target + .toc-target{margin-top:56px;}
  .sec-head{display:flex;align-items:center;gap:12px;}
  .sec-kicker{
    width:34px;height:34px;flex:none;border-radius:11px;background:var(--c-brand-08);
    color:var(--c-brand);font-size:13px;font-weight:700;letter-spacing:.4px;
    display:inline-flex;align-items:center;justify-content:center;font-variant-numeric:tabular-nums;
  }
  .sec-head h2{font-size:26px;font-weight:700;line-height:1.3;letter-spacing:-.3px;}
  .sec-lead{margin-top:12px;font-size:15px;color:var(--t-2);max-width:72ch;}

  .entries{margin-top:24px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:8px 28px;box-shadow:var(--sh-1);}
  .entry{padding:26px 0;display:flex;gap:16px;}
  .entry + .entry{border-top:1px solid var(--line-2);}
  .entry + .entry:nth-child(3n){border-top-color:var(--line-2);}
  .entry-icon{
    width:32px;height:32px;flex:none;border-radius:10px;background:var(--c-brand-08);
    color:var(--c-brand);display:inline-flex;align-items:center;justify-content:center;
  }
  .entry-body{min-width:0;}
  .entry-body h3{font-size:18px;font-weight:600;line-height:1.45;}
  .entry-body p{margin-top:8px;font-size:15px;color:var(--t-2);max-width:72ch;}
  .tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px;}
  .tag{
    display:inline-flex;align-items:center;font-size:12px;font-weight:600;letter-spacing:.4px;
    color:var(--c-brand);background:var(--c-brand-08);
    border-radius:var(--r-pill);padding:4px 10px;line-height:1.5;
  }
  .tag-ok{color:var(--ok);background:rgba(22,163,137,.1);}
  .tag-warn{color:var(--warn);background:rgba(228,87,46,.1);}

  .section-divider{height:1px;background:var(--line-2);margin:0 -28px;}

  /* ---------- 图文展示位 ---------- */
  .figure-block{margin-top:56px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:20px;box-shadow:var(--sh-1);}
  .figure-media{position:relative;aspect-ratio:16/9;border-radius:var(--r-card);overflow:hidden;background:var(--bg-alt);}
  .figure-media img{width:100%;height:100%;object-fit:cover;}
  .figure-cap{margin-top:12px;font-size:13px;color:var(--t-3);}

  /* ---------- 提示条 ---------- */
  .notice{
    margin-top:32px;display:flex;gap:14px;align-items:flex-start;
    background:#fff;border:1px solid var(--line);border-left:3px solid var(--c-brand);
    border-radius:0 var(--r-sm) var(--r-sm) 0;padding:20px 22px;box-shadow:var(--sh-1);
  }
  .notice-icon{flex:none;color:var(--c-brand);margin-top:2px;}
  .notice h3{font-size:16px;font-weight:600;}
  .notice p{margin-top:6px;font-size:14px;color:var(--t-2);}

  /* ---------- CTA + 表单 ---------- */
  .cta-section{padding:0 0 96px;}
  .cta-card{
    background:var(--bg-alt);border-radius:24px;padding:48px;
    display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center;
  }
  .cta-card h2{font-size:30px;font-weight:700;line-height:1.3;letter-spacing:-.4px;}
  .cta-card .cta-desc{margin-top:12px;font-size:14px;color:var(--t-2);max-width:52ch;}
  .cta-points{margin-top:22px;display:flex;flex-direction:column;gap:10px;}
  .cta-points li{display:flex;align-items:center;gap:10px;font-size:14px;color:var(--t-2);}
  .cta-points svg{color:var(--ok);flex:none;}
  .form-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-1);}
  .field + .field{margin-top:14px;}
  .field label{display:block;font-size:13px;font-weight:600;color:var(--t-2);margin-bottom:6px;}
  .field input,.field textarea{
    width:100%;height:48px;padding:0 14px;border:1px solid var(--line);
    border-radius:var(--r-sm);background:#fff;font-size:15px;color:var(--t-1);
    transition:all var(--ease);
  }
  .field textarea{height:96px;padding:12px 14px;resize:vertical;line-height:1.6;}
  .field input::placeholder,.field textarea::placeholder{color:var(--t-3);font-size:14px;}
  .field input:focus,.field textarea:focus{
    outline:none;border-color:var(--c-brand);
    box-shadow:0 0 0 3px var(--c-brand-08);
  }
  .form-card .btn{margin-top:18px;}
  .form-note{margin-top:12px;font-size:12px;color:var(--t-3);}

  /* ---------- 相关互链 ---------- */
  .related-section{padding:0 0 96px;}
  .related-head{font-size:22px;font-weight:700;letter-spacing:-.3px;}
  .related-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:24px;}
  .related-card{
    display:flex;align-items:flex-start;justify-content:space-between;gap:18px;
    background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
    padding:24px;box-shadow:var(--sh-1);transition:all var(--ease);color:var(--t-1);
  }
  .related-card:hover{transform:translateY(-4px);border-color:var(--c-brand-25);box-shadow:var(--sh-2);}
  .related-card:hover h3{color:var(--c-brand);}
  .related-card h3{font-size:18px;font-weight:600;transition:color var(--ease);}
  .related-card p{margin-top:8px;font-size:14px;color:var(--t-2);}
  .related-card .arrow{flex:none;color:var(--c-brand);transition:transform var(--ease);}
  .related-card:hover .arrow{transform:translateX(4px);}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--t-1);color:rgba(255,255,255,.92);padding:64px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .footer-brand .brand-name{color:#fff;font-size:18px;font-weight:700;}
  .footer-brand .brand-sub{color:rgba(255,255,255,.6);font-size:11px;}
  .footer-desc{margin-top:16px;font-size:14px;color:rgba(255,255,255,.65);max-width:34ch;}
  .footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-col ul{display:flex;flex-direction:column;gap:10px;}
  .footer-col li{font-size:14px;color:rgba(255,255,255,.65);}
  .footer-col a{color:rgba(255,255,255,.65);}
  .footer-col a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .footer-bottom{
    margin-top:48px;padding:20px 0;border-top:1px solid rgba(255,255,255,.1);
    display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
    font-size:12px;color:rgba(255,255,255,.6);
  }
  .footer-bottom a{color:rgba(255,255,255,.6);}
  .footer-bottom a:hover{color:#fff;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .nav-menu{display:none;}
    .icon-btn{display:inline-flex;}
    .container-x{padding:0 24px;}
    .page-layout{grid-template-columns:1fr;gap:28px;}
    .toc{
      position:sticky;top:88px;z-index:30;
      display:flex;align-items:center;gap:8px;
      padding:10px;border-radius:var(--r-pill);overflow-x:auto;
      -ms-overflow-style:none;scrollbar-width:none;
    }
    .toc::-webkit-scrollbar{display:none;}
    .toc-title{display:none;}
    .toc-list{flex-direction:row;gap:8px;}
    .toc-list a{
      white-space:nowrap;border-left:none;border:1px solid var(--line);
      border-radius:var(--r-pill);padding:8px 16px;
    }
    .toc-list a.is-current{border-color:var(--c-brand);border-left-color:var(--c-brand);}
    .cta-card{grid-template-columns:1fr;gap:32px;padding:36px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .banner-inner{min-height:230px;padding:24px 28px 32px;}
    .banner-title{font-size:28px;}
    .page-main{padding:48px 0 72px;}
    .entries{padding:6px 22px;}
  }
  @media (max-width:639px){
    .container-x{padding:0 16px;}
    .nav-wrap{padding:0 16px;top:10px;margin-top:10px;}
    .nav-bar{height:58px;padding:0 10px 0 12px;gap:10px;}
    .brand-name{font-size:15px;max-width:150px;}
    .brand-sub{font-size:10px;}
    .nav-actions .btn-accent{padding:10px 14px !important;font-size:13px !important;}
    .page-banner{padding:0 16px;margin-top:16px;}
    .banner-inner{min-height:210px;border-radius:16px;padding:20px 20px 26px;}
    .banner-title{font-size:26px;margin-top:16px;}
    .banner-lead{font-size:13px;}
    .sec-head h2{font-size:22px;}
    .sec-lead{font-size:14px;}
    .entries{padding:4px 18px;}
    .entry{gap:12px;padding:22px 0;}
    .entry-body h3{font-size:16px;}
    .entry-body p{font-size:14px;}
    .cta-card{padding:24px;border-radius:16px;}
    .cta-card h2{font-size:24px;}
    .related-grid{grid-template-columns:1fr;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
    .site-footer{padding-top:48px;}
    .footer-col:first-child{grid-column:1 / -1;}
    .figure-block{padding:14px;}
    .section-divider{margin:0 -18px;}
  }

/* roulang page: category2 */
:root{
    --c-brand:#1E66E0;
    --c-brand-h:#1550B8;
    --c-brand-soft:rgba(30,102,224,.08);
    --c-brand-line:rgba(30,102,224,.25);
    --c-accent:#FF9F1C;
    --c-accent-h:#E8860A;
    --c-ink:#0F1C2E;
    --c-ink-2:#5A6B84;
    --c-ink-3:#8A98AD;
    --c-bg:#F6F8FC;
    --c-bg-alt:#EEF3FB;
    --c-card:#FFFFFF;
    --c-line:#E3E9F2;
    --c-divider:#EDF1F7;
    --c-ok:#16A389;
    --c-warn:#E4572E;
    --r-card:16px;
    --r-sm:12px;
    --r-pill:999px;
    --sh-1:0 1px 2px rgba(15,28,46,.04),0 8px 24px rgba(15,28,46,.06);
    --sh-2:0 12px 32px rgba(30,102,224,.14);
    --sh-nav:0 10px 30px rgba(15,28,46,.10);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;scroll-padding-top:110px;}
  body{
    margin:0;padding-top:16px;
    background:var(--c-bg);color:var(--c-ink);
    font-family:'PingFang SC','Hiragino Sans GB','Microsoft YaHei','Noto Sans SC',system-ui,sans-serif;
    font-size:17px;line-height:1.75;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:var(--c-brand);text-decoration:none;}
  button{font-family:inherit;}
  h1,h2,h3,h4{margin:0;color:var(--c-ink);}
  p{margin:0;}
  ul{margin:0;padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--c-brand);outline-offset:2px;}

  .container-x{max-width:1200px;margin:0 auto;padding:0 32px;}

  /* ---------- 导航 ---------- */
  .nav-bar{
    position:sticky;top:16px;z-index:60;
    width:min(1120px,92%);margin:0 auto;height:64px;
    display:flex;align-items:center;justify-content:space-between;gap:20px;
    padding:0 12px 0 16px;
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border:1px solid var(--c-line);border-radius:var(--r-pill);
    box-shadow:var(--sh-nav);
    transition:box-shadow .25s ease-out;
  }
  .nav-bar.scrolled{box-shadow:0 14px 38px rgba(15,28,46,.14);}
  .brand{display:flex;align-items:center;gap:10px;text-decoration:none;flex:none;}
  .brand-mark{
    width:36px;height:36px;border-radius:10px;background:var(--c-brand);
    display:inline-flex;align-items:center;justify-content:center;flex:none;
  }
  .brand-text{display:flex;flex-direction:column;line-height:1.25;}
  .brand-name{font-size:18px;font-weight:700;color:var(--c-ink);letter-spacing:-.2px;}
  .brand-sub{font-size:11px;color:var(--c-ink-3);letter-spacing:.3px;}
  .nav-menu{display:flex;align-items:center;gap:28px;}
  .nav-link{
    position:relative;font-size:15px;font-weight:500;color:var(--c-ink-2);
    text-decoration:none;padding:8px 2px;transition:color .2s ease-out;white-space:nowrap;
  }
  .nav-link::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:999px;
    background:var(--c-brand);transform:scaleX(0);transform-origin:center;
    transition:transform .22s ease-out;
  }
  .nav-link:hover{color:var(--c-brand);}
  .nav-link:hover::after{transform:scaleX(1);}
  .nav-link.active{
    color:var(--c-brand);background:var(--c-brand-soft);
    padding:8px 14px;border-radius:var(--r-pill);font-weight:600;
  }
  .nav-link.active::after{display:none;}
  .nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
  .icon-btn{
    width:40px;height:40px;border-radius:50%;border:1px solid var(--c-line);
    background:var(--c-bg-alt);color:var(--c-ink-2);
    display:none;align-items:center;justify-content:center;cursor:pointer;
    transition:background .2s ease-out,color .2s ease-out;
  }
  .icon-btn:hover{background:var(--c-brand-soft);color:var(--c-brand);}

  .mobile-menu{
    display:none;position:fixed;left:50%;top:92px;transform:translateX(-50%);
    width:calc(100% - 32px);max-width:520px;z-index:70;
    background:#fff;border:1px solid var(--c-line);border-radius:var(--r-card);
    box-shadow:0 18px 44px rgba(15,28,46,.18);padding:12px;
  }
  .mobile-menu.open{display:block;}
  .mobile-menu .m-item{
    display:flex;align-items:center;height:48px;padding:0 16px;border-radius:12px;
    font-size:15px;color:var(--c-ink);text-decoration:none;transition:background .2s ease-out,color .2s ease-out;
  }
  .mobile-menu .m-item:hover,.mobile-menu .m-item.active{background:var(--c-brand-soft);color:var(--c-brand);font-weight:600;}
  .mobile-menu .m-cta{display:block;margin-top:10px;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    font-size:15px;font-weight:600;line-height:1.2;border-radius:12px;
    padding:13px 24px;border:1px solid transparent;cursor:pointer;
    text-decoration:none;transition:background .2s ease-out,color .2s ease-out,transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .btn-primary{background:var(--c-brand);color:#fff;}
  .btn-primary:hover{background:var(--c-brand-h);transform:translateY(-2px);box-shadow:0 10px 24px rgba(30,102,224,.28);}
  .btn-accent{background:var(--c-accent);color:#fff;}
  .btn-accent:hover{background:var(--c-accent-h);transform:translateY(-2px);box-shadow:0 10px 24px rgba(255,159,28,.32);}
  .btn-ghost{background:#fff;border-color:var(--c-brand-line);color:var(--c-brand);}
  .btn-ghost:hover{background:var(--c-brand-soft);transform:translateY(-2px);}
  .btn-white{background:transparent;border-color:rgba(255,255,255,.72);color:#fff;}
  .btn-white:hover{background:rgba(255,255,255,.16);transform:translateY(-2px);}
  .btn-pill{border-radius:var(--r-pill);}
  .btn:active{transform:translateY(0);}
  .btn[disabled]{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none;}

  .link-arrow{
    display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;
    color:var(--c-brand);text-decoration:none;
  }
  .link-arrow svg{transition:transform .2s ease-out;}
  .link-arrow:hover svg{transform:translateX(3px);}
  .link-arrow:hover{text-decoration:underline;text-underline-offset:3px;}

  .pill{
    display:inline-flex;align-items:center;gap:4px;
    padding:4px 10px;border-radius:999px;background:var(--c-brand-soft);
    color:var(--c-brand);font-size:12px;font-weight:600;letter-spacing:.4px;
    white-space:nowrap;
  }
  .pill-ok{background:rgba(22,163,137,.1);color:var(--c-ok);}
  .pill-warn{background:rgba(228,87,46,.1);color:var(--c-warn);}
  .pill-white{background:#fff;color:var(--c-brand);box-shadow:0 2px 8px rgba(15,28,46,.10);}

  /* ---------- 面包屑 ---------- */
  .breadcrumb{
    display:flex;align-items:center;flex-wrap:wrap;gap:8px;
    font-size:14px;color:rgba(255,255,255,.72);padding:6px 0 18px;
  }
  .breadcrumb a{color:rgba(255,255,255,.86);text-decoration:none;}
  .breadcrumb a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .breadcrumb .sep{color:rgba(255,255,255,.45);}
  .breadcrumb .current{color:rgba(255,255,255,.7);}

  /* ---------- 分类页紧凑 Hero ---------- */
  .cat-hero{
    position:relative;overflow:hidden;border-radius:24px;margin-top:24px;
    padding:26px 40px 40px;
    background-image:
      linear-gradient(180deg,rgba(30,102,224,.94) 0%,rgba(30,102,224,.72) 46%,rgba(30,102,224,.34) 100%),
      url('/assets/images/backpic/back-1.png');
    background-size:cover;background-position:center;
    color:#fff;
    box-shadow:0 18px 40px rgba(15,28,46,.12);
  }
  .cat-hero::after{
    content:"";position:absolute;right:-90px;top:-70px;width:320px;height:320px;
    border-radius:50%;border:34px solid rgba(255,255,255,.08);pointer-events:none;
  }
  .cat-hero h1{
    position:relative;z-index:1;
    font-size:32px;font-weight:700;line-height:1.3;letter-spacing:-.4px;
    color:#fff;margin:0 0 12px;max-width:24ch;
  }
  .cat-hero p{position:relative;z-index:1;font-size:14px;color:rgba(255,255,255,.88);max-width:60ch;margin:0 0 22px;}
  .cat-hero .hero-btn-wrap{position:relative;z-index:1;}

  /* ---------- 主体两栏 ---------- */
  .cat-main{padding:56px 0 0;}
  .cat-layout{display:grid;grid-template-columns:240px minmax(0,1fr);gap:40px;align-items:start;}

  .toc{
    position:sticky;top:96px;
    background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:14px;box-shadow:var(--sh-1);
  }
  .toc-title{font-size:12px;font-weight:600;letter-spacing:.6px;color:var(--c-ink-3);padding:4px 14px 10px;text-transform:uppercase;}
  .toc a{
    display:block;font-size:14px;color:var(--c-ink-2);text-decoration:none;
    padding:10px 14px;border-radius:12px;border-left:3px solid transparent;
    transition:background .2s ease-out,color .2s ease-out,border-color .2s ease-out;
  }
  .toc a:hover{background:var(--c-brand-soft);color:var(--c-brand);}
  .toc a.active{
    color:var(--c-brand);background:var(--c-brand-soft);
    border-left-color:var(--c-brand);font-weight:600;
  }

  .content-panel{min-width:0;}
  .section-block{padding:0 0 8px;}
  .section-block + .section-block{padding-top:36px;}
  .section-head{display:flex;align-items:center;gap:12px;margin-bottom:6px;}
  .section-head h2{font-size:26px;font-weight:700;line-height:1.35;letter-spacing:-.3px;}
  .section-lead{font-size:15px;color:var(--c-ink-2);line-height:1.8;margin:8px 0 4px;max-width:72ch;}

  .entry{padding:22px 0;}
  .entry-head{display:flex;align-items:flex-start;gap:14px;}
  .entry-num{
    flex:none;width:36px;height:36px;border-radius:12px;background:var(--c-brand-soft);
    color:var(--c-brand);display:flex;align-items:center;justify-content:center;
    font-size:14px;font-weight:700;letter-spacing:.2px;
  }
  .entry h3{font-size:18px;font-weight:600;line-height:1.5;letter-spacing:-.1px;}
  .entry p{font-size:15px;color:var(--c-ink-2);line-height:1.8;margin:10px 0 14px;max-width:72ch;}
  .tag-row{display:flex;flex-wrap:wrap;gap:8px;}

  .entry-divider{height:1px;background:var(--c-divider);border:0;margin:8px 0;}

  .figure-card{margin:28px 0 8px;}
  .figure-card img{
    width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:16px;
    border:1px solid var(--c-line);box-shadow:var(--sh-1);
  }
  .figure-card figcaption{font-size:13px;color:var(--c-ink-3);margin-top:10px;line-height:1.7;}

  /* ---------- 安全提示卡 ---------- */
  .safe-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:24px;}
  .safe-card{
    background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:22px;box-shadow:var(--sh-1);
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .safe-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-line);}
  .safe-icon{
    width:40px;height:40px;border-radius:12px;background:var(--c-brand-soft);
    display:flex;align-items:center;justify-content:center;color:var(--c-brand);margin-bottom:14px;
  }
  .safe-card h3{font-size:16px;font-weight:600;margin-bottom:8px;}
  .safe-card p{font-size:14px;color:var(--c-ink-2);line-height:1.75;}

  /* ---------- FAQ ---------- */
  .faq-wrap{max-width:100%;margin-top:20px;}
  .faq-item{
    background:var(--c-card);border:1px solid var(--c-line);border-radius:12px;
    margin-bottom:12px;overflow:hidden;transition:border-color .2s ease-out,box-shadow .2s ease-out;
  }
  .faq-item.open{border-color:rgba(30,102,224,.2);box-shadow:var(--sh-1);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:none;border:0;cursor:pointer;text-align:left;
    padding:18px 20px;font-size:16px;font-weight:600;color:var(--c-ink);line-height:1.5;
  }
  .faq-q:hover{color:var(--c-brand);}
  .faq-ic{
    flex:none;width:24px;height:24px;border-radius:50%;background:var(--c-brand-soft);
    display:flex;align-items:center;justify-content:center;color:var(--c-brand);
    transition:transform .25s ease-out;
  }
  .faq-item.open .faq-ic{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease-out;}
  .faq-a-inner{padding:0 20px 20px;font-size:15px;color:var(--c-ink-2);line-height:1.8;}

  /* ---------- CTA ---------- */
  .cta-band{margin-top:72px;}
  .cta-card{
    background:var(--c-bg-alt);border:1px solid var(--c-line);border-radius:24px;
    padding:44px;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,420px);gap:48px;align-items:center;
  }
  .cta-card h2{font-size:30px;font-weight:700;line-height:1.35;letter-spacing:-.3px;margin-bottom:14px;}
  .cta-card .cta-desc{font-size:15px;color:var(--c-ink-2);line-height:1.8;max-width:52ch;}
  .cta-points{display:flex;flex-wrap:wrap;gap:14px 22px;margin-top:22px;}
  .cta-points span{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:var(--c-ink-2);}
  .cta-points svg{color:var(--c-ok);flex:none;}

  .form-card{
    background:var(--c-card);border:1px solid var(--c-line);border-radius:16px;
    padding:24px;box-shadow:var(--sh-1);
  }
  .form-field{margin-bottom:14px;}
  .form-field label{display:block;font-size:13px;font-weight:600;color:var(--c-ink-2);margin-bottom:6px;}
  .form-input{
    width:100%;height:48px;border-radius:12px;border:1px solid var(--c-line);
    background:#fff;padding:0 14px;font-size:15px;color:var(--c-ink);
    transition:border-color .2s ease-out,box-shadow .2s ease-out;font-family:inherit;
  }
  .form-input::placeholder{color:var(--c-ink-3);font-size:14px;}
  .form-input:focus{
    outline:none;border-color:var(--c-brand);
    box-shadow:0 0 0 3px rgba(30,102,224,.14);
  }
  .form-input.error{border-color:var(--c-warn);box-shadow:0 0 0 3px rgba(228,87,46,.12);}
  .form-error{display:none;font-size:13px;color:var(--c-warn);margin-top:6px;}
  .form-error.show{display:block;}
  textarea.form-input{height:96px;padding:12px 14px;resize:vertical;line-height:1.6;}
  .form-note{font-size:12px;color:var(--c-ink-3);line-height:1.7;margin-top:12px;}

  /* ---------- 相关分类互链 ---------- */
  .rel-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin-top:40px;}
  .rel-card{
    display:flex;align-items:center;justify-content:space-between;gap:16px;
    background:var(--c-card);border:1px solid var(--c-line);border-radius:var(--r-card);
    padding:22px 24px;box-shadow:var(--sh-1);text-decoration:none;
    transition:transform .2s ease-out,box-shadow .2s ease-out,border-color .2s ease-out;
  }
  .rel-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--c-brand-line);}
  .rel-card h3{font-size:16px;font-weight:600;color:var(--c-ink);margin-bottom:4px;}
  .rel-card p{font-size:14px;color:var(--c-ink-2);line-height:1.7;}
  .rel-card .rel-arrow{flex:none;color:var(--c-brand);transition:transform .2s ease-out;}
  .rel-card:hover .rel-arrow{transform:translateX(4px);}
  .rel-card:hover h3{color:var(--c-brand);}

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--c-ink);color:rgba(255,255,255,.92);margin-top:88px;padding:64px 0 0;}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-name{color:#fff;}
  .footer-brand .brand-sub{color:rgba(255,255,255,.55);}
  .footer-desc{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);max-width:34ch;}
  .footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-col ul li{font-size:14px;line-height:1.8;color:rgba(255,255,255,.65);margin-bottom:10px;}
  .footer-col ul li a{color:rgba(255,255,255,.65);text-decoration:none;transition:color .2s ease-out;}
  .footer-col ul li a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}
  .footer-bottom{
    margin-top:48px;padding:22px 0;border-top:1px solid rgba(255,255,255,.1);
    display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
    font-size:12px;color:rgba(255,255,255,.6);
  }
  .footer-bottom a{color:rgba(255,255,255,.75);text-decoration:none;}
  .footer-bottom a:hover{color:#fff;text-decoration:underline;text-underline-offset:3px;}

  /* ---------- 响应式 ---------- */
  @media (max-width:1023px){
    .container-x{padding:0 24px;}
    .nav-menu{display:none;}
    .icon-btn{display:inline-flex;}
    .nav-bar{height:60px;}
    .brand-name{font-size:16px;}
    .cat-hero{padding:22px 26px 32px;}
    .cat-hero h1{font-size:28px;}
    .cat-layout{grid-template-columns:minmax(0,1fr);gap:24px;}
    .toc{
      position:sticky;top:84px;z-index:40;
      display:flex;gap:8px;overflow-x:auto;padding:10px;
      border-radius:var(--r-pill);scrollbar-width:none;
    }
    .toc::-webkit-scrollbar{display:none;}
    .toc-title{display:none;}
    .toc a{
      white-space:nowrap;font-size:13px;padding:8px 16px;border-radius:999px;
      border-left:0;background:var(--c-bg-alt);
    }
    .toc a.active{border-left:0;background:var(--c-brand);color:#fff;}
    .cta-card{grid-template-columns:minmax(0,1fr);gap:28px;padding:32px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  }
  @media (max-width:639px){
    body{font-size:16px;}
    .container-x{padding:0 16px;}
    .nav-bar{width:calc(100% - 24px);padding:0 10px 0 12px;height:58px;gap:10px;}
    .brand-mark{width:32px;height:32px;border-radius:9px;}
    .brand-name{font-size:14px;}
    .brand-sub{display:none;}
    .nav-actions .btn-accent{padding:9px 14px!important;font-size:13px!important;}
    .cat-hero{margin-top:16px;border-radius:18px;padding:18px 20px 26px;}
    .cat-hero h1{font-size:24px;}
    .cat-hero p{font-size:13px;}
    .cat-main{padding-top:36px;}
    .section-head h2{font-size:22px;}
    .entry h3{font-size:17px;}
    .safe-grid{grid-template-columns:minmax(0,1fr);}
    .rel-grid{grid-template-columns:minmax(0,1fr);}
    .cta-card{padding:24px;border-radius:18px;}
    .cta-card h2{font-size:24px;}
    .form-card{padding:18px;}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px;}
    .footer-bottom{flex-direction:column;align-items:flex-start;}
  }