/* roulang page: index */
:root{
  --primary:#2A50D8;
  --primary-dark:#1B3AA6;
  --primary-light:#EAF0FF;
  --gold:#F2A93B;
  --gold-dark:#D98E1D;
  --cyan:#2BB3C0;
  --bg:#FAFBFE;
  --card:#FFFFFF;
  --ink:#0F1B3D;
  --sub:#4B5878;
  --muted:#8A93AB;
  --border:#E4E8F2;
  --divider:#EEF1F8;
  --success:#1EA97C;
  --warning:#E8A13A;
  --danger:#E0524B;
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-btn:10px;
  --r-pill:999px;
  --sh-sm:0 1px 2px rgba(15,27,61,.06);
  --sh-md:0 8px 24px rgba(15,27,61,.08);
  --sh-lg:0 18px 48px rgba(15,27,61,.12);
  --max:1200px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",sans-serif;
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:var(--primary);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--primary-dark)}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0}
ul,ol{padding:0;list-style:none}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--max);margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.stars-bg{
  background-image:
    radial-gradient(rgba(42,80,216,.045) 1px, transparent 1px),
    radial-gradient(rgba(42,80,216,.03) 1px, transparent 1px);
  background-size:28px 28px,56px 56px;
  background-position:0 0,14px 14px;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;letter-spacing:.06em;
  color:var(--primary);background:var(--primary-light);
  border-radius:var(--r-pill);padding:5px 14px;
}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:40px;flex-wrap:wrap}
.section-head h2{font-size:30px;font-weight:700;line-height:1.35;margin-top:14px}
.section-head p{color:var(--sub);max-width:640px;margin-top:10px}
.section-head .head-side{display:flex;align-items:center;gap:12px}
.hairline{height:1px;background:repeating-linear-gradient(90deg,var(--border) 0 6px,transparent 6px 12px);border:0;margin:0}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 22px;border-radius:var(--r-btn);
  font-size:15.5px;font-weight:600;line-height:1;
  border:1px solid transparent;cursor:pointer;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--sh-lg);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm)}
.btn-secondary{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-secondary:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-gold{background:var(--gold);color:#3A2600}
.btn-gold:hover{background:var(--gold-dark);color:#3A2600;box-shadow:var(--sh-lg);transform:translateY(-1px)}
.btn-ghost{background:transparent;border-color:var(--border);color:var(--sub)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.btn-sm{height:40px;padding:0 16px;font-size:14.5px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#C9D0E0;color:#fff;border-color:#C9D0E0;cursor:not-allowed;box-shadow:none;transform:none}
.skeleton{background:linear-gradient(90deg,#EEF1F8 25%,#F6F8FD 37%,#EEF1F8 63%);background-size:400% 100%;animation:pulse 1.4s ease infinite;border-radius:10px}
@keyframes pulse{0%{background-position:100% 50%}100%{background-position:0 50%}}

/* 标签 */
.tag{
  display:inline-flex;align-items:center;
  font-size:13px;font-weight:600;line-height:1;
  padding:5px 10px;border-radius:var(--r-pill);
  background:var(--primary-light);color:var(--primary);
}
.tag-cyan{background:#E7F7F9;color:#1E8C97;border:1px solid #BFE9EE}
.tag-gold{background:#FDF1DD;color:#A96A05}
.tag-line{background:transparent;border:1px solid var(--border);color:var(--sub)}
.badge-dot{width:6px;height:6px;border-radius:50%;background:var(--cyan);display:inline-block}

/* 顶栏 */
.site-header{
  position:sticky;top:0;z-index:100;
  background:rgba(250,251,254,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--divider);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--sh-md)}
.nav{height:72px;display:flex;align-items:center;justify-content:space-between;gap:24px}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink);flex:none}
.brand:hover{color:var(--ink)}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(145deg,var(--primary),#3D63E8);
  display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm);
}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.25}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:11.5px;color:var(--muted);letter-spacing:.08em}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;
  padding:10px 14px;border-radius:8px;
  font-size:15px;font-weight:500;color:var(--sub);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);position:relative}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink)}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{
  display:none;border-top:1px solid var(--divider);background:#fff;
  padding:18px 20px 24px;
}
.mobile-drawer.open{display:block}
.mobile-drawer a.drawer-link{
  display:block;padding:13px 4px;font-size:16px;color:var(--sub);
  border-bottom:1px solid var(--divider);font-weight:500;
}
.mobile-drawer a.drawer-link.active{color:var(--primary);font-weight:600}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:18px}

/* Hero */
.hero{position:relative;overflow:hidden;padding:76px 0 56px}
.hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(180deg,rgba(250,251,254,.88),rgba(250,251,254,.97)),url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
}
.hero > .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:7fr 5fr;gap:48px;align-items:center}
.hero-copy h1{font-size:40px;line-height:1.28;font-weight:700;letter-spacing:-.01em;margin-top:18px}
.hero-copy h1 em{font-style:normal;color:var(--primary)}
.hero-lead{margin-top:18px;font-size:17px;color:var(--sub);max-width:560px}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-media{position:relative}
.hero-media::before{
  content:"";position:absolute;inset:-24px -18px -18px -18px;border-radius:24px;
  background-image:radial-gradient(rgba(42,80,216,.07) 1px,transparent 1px);
  background-size:20px 20px;
}
.hero-shot{
  position:relative;border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--sh-lg);background:#EEF1F8;
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover}
.trust-bar{
  margin-top:44px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--sh-sm);display:grid;grid-template-columns:repeat(3,1fr);
}
.trust-item{padding:20px 26px;display:flex;gap:14px;align-items:flex-start}
.trust-item + .trust-item{border-left:1px dashed var(--border)}
.trust-item .ti-icon{
  width:36px;height:36px;border-radius:10px;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;flex:none;color:var(--primary);
}
.trust-item .ti-icon svg{width:18px;height:18px}
.trust-item dt{font-size:13px;color:var(--muted);margin-bottom:2px}
.trust-item dd{font-size:15px;font-weight:600;color:var(--ink);margin:0}

/* 功能价值区 */
.value-grid{display:grid;grid-template-columns:5fr 7fr;gap:24px;align-items:stretch}
.value-col{display:grid;gap:24px}
.info-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--sh-md);transition:transform .2s ease,box-shadow .2s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.info-card:hover h3{color:var(--primary)}
.info-card .ic-icon{
  width:44px;height:44px;border-radius:12px;background:var(--primary-light);
  display:flex;align-items:center;justify-content:center;color:var(--primary);margin-bottom:16px;
}
.info-card .ic-icon svg{width:22px;height:22px}
.info-card h3{font-size:22px;font-weight:600;line-height:1.4;transition:color .2s ease}
.info-card p{color:var(--sub);margin-top:10px;font-size:15.5px}
.feature-card{
  position:relative;background:var(--card);border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-md);
  display:flex;flex-direction:column;transition:transform .2s ease,box-shadow .2s ease;
}
.feature-card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.feature-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF1F8}
.feature-card .fc-body{padding:26px 28px 28px}
.feature-card h3{font-size:22px;font-weight:600}
.feature-card p{color:var(--sub);margin-top:10px;font-size:15.5px}
.feature-card .fc-list{margin-top:16px;display:grid;gap:10px}
.feature-card .fc-list li{display:flex;gap:10px;color:var(--sub);font-size:15px}
.feature-card .fc-list li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--cyan);margin-top:9px;flex:none}

/* 轮播 */
.carousel-wrap{position:relative}
.carousel-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 22px;scrollbar-width:thin;
}
.carousel-track::-webkit-scrollbar{height:6px}
.carousel-track::-webkit-scrollbar-thumb{background:var(--border);border-radius:999px}
.slide{
  flex:0 0 340px;scroll-snap-align:start;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.slide:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.slide .slide-media{position:relative}
.slide img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF1F8}
.slide .slide-index{
  position:absolute;left:14px;top:14px;width:30px;height:30px;border-radius:9px;
  background:rgba(15,27,61,.78);color:#fff;font-size:13px;font-weight:600;
  display:flex;align-items:center;justify-content:center;
}
.slide .slide-body{padding:20px 22px 24px}
.slide h3{font-size:18px;font-weight:600}
.slide p{color:var(--sub);font-size:14.5px;margin-top:8px}
.carousel-nav{display:flex;align-items:center;gap:12px}
.icon-btn{
  width:42px;height:42px;border-radius:50%;border:1px solid var(--border);background:#fff;
  color:var(--sub);display:flex;align-items:center;justify-content:center;cursor:pointer;
  transition:all .2s ease;
}
.icon-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--primary-light)}
.icon-btn:active{transform:translateY(1px)}
.icon-btn svg{width:18px;height:18px}
.carousel-dots{display:flex;gap:8px;justify-content:center;margin-top:6px}
.carousel-dots button{
  width:8px;height:8px;border-radius:999px;border:0;background:var(--border);cursor:pointer;
  transition:all .2s ease;padding:0;
}
.carousel-dots button.active{width:22px;background:var(--primary)}

/* 系统要求 */
.spec-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.spec-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:30px;box-shadow:var(--sh-sm);
}
.spec-card .spec-head{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.spec-card .spec-head .ic{
  width:42px;height:42px;border-radius:12px;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;
}
.spec-card .spec-head .ic svg{width:20px;height:20px}
.spec-card h3{font-size:20px;font-weight:600}
.spec-rows{border-radius:var(--r-img);overflow:hidden}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;height:48px;padding:0 16px;font-size:15px}
.spec-row:nth-child(odd){background:var(--primary-light)}
.spec-row dt{color:var(--sub)}
.spec-row dd{margin:0;font-weight:600;color:var(--ink);text-align:right}
.spec-note{margin-top:18px;font-size:14px;color:var(--muted);display:flex;gap:8px;align-items:flex-start}
.spec-note svg{width:16px;height:16px;flex:none;margin-top:5px;color:var(--cyan)}

/* 评价墙 */
.reviews{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.reviews .col{display:grid;gap:24px;align-content:start}
.reviews .col:nth-child(2){margin-top:34px}
.reviews .col:nth-child(3){margin-top:14px}
.review-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease;
}
.review-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.review-top{display:flex;align-items:center;gap:12px}
.avatar{
  width:42px;height:42px;border-radius:50%;flex:none;color:#fff;font-weight:700;font-size:16px;
  display:flex;align-items:center;justify-content:center;background:var(--primary);
}
.avatar.c1{background:#2A50D8}
.avatar.c2{background:#2BB3C0}
.avatar.c3{background:#F2A93B;color:#3A2600}
.avatar.c4{background:#5B4BD6}
.avatar.c5{background:#1EA97C}
.avatar.c6{background:#3D63E8}
.review-top .who{display:flex;flex-direction:column;line-height:1.35}
.review-top .who b{font-size:15px}
.review-top .who span{font-size:12.5px;color:var(--muted)}
.stars{display:flex;gap:2px;color:var(--gold);margin:12px 0 8px}
.stars svg{width:15px;height:15px}
.review-card p{font-size:15px;color:var(--sub);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.review-foot{margin-top:14px;display:flex;justify-content:space-between;align-items:center;font-size:12.5px;color:var(--muted)}

/* 下载区 */
.download-panel{
  background:#fff;border:1px solid var(--border);border-radius:20px;
  box-shadow:var(--sh-md);padding:36px;display:grid;grid-template-columns:7fr 5fr;gap:36px;align-items:center;
}
.download-actions{display:grid;gap:14px}
.download-meta{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-top:22px}
.download-meta div{background:var(--primary-light);border-radius:var(--r-img);padding:14px 16px}
.download-meta dt{font-size:12.5px;color:var(--sub)}
.download-meta dd{margin:2px 0 0;font-size:15px;font-weight:600}
.safety-note{
  margin-top:20px;display:flex;gap:10px;align-items:flex-start;
  font-size:14px;color:var(--sub);border-top:1px dashed var(--border);padding-top:16px;
}
.safety-note svg{width:17px;height:17px;flex:none;margin-top:5px;color:var(--success)}
.qr-card{
  width:160px;height:160px;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-img);box-shadow:var(--sh-sm);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;
  margin:0 auto;
}
.qr-code{
  width:88px;height:88px;border-radius:6px;
  background-color:#0F1B3D;
  background-image:
    linear-gradient(90deg,#fff 6px,transparent 6px),
    linear-gradient(#fff 6px,transparent 6px),
    radial-gradient(#0F1B3D 2px,transparent 2px);
  background-size:22px 22px,22px 22px,8px 8px;
  background-position:0 0,0 0,4px 4px;
}
.qr-card span{font-size:12.5px;color:var(--muted)}

/* 资讯列表 */
.posts-grid{display:grid;grid-template-columns:7fr 5fr;gap:24px;align-items:start}
.post-feature{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm);
  transition:transform .2s ease,box-shadow .2s ease;color:var(--ink);
}
.post-feature:hover{transform:translateY(-2px);box-shadow:var(--sh-md);color:var(--ink)}
.post-feature img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF1F8}
.post-feature .pf-body{padding:26px 28px 28px}
.post-feature h3{font-size:22px;font-weight:700;line-height:1.45;margin-top:12px}
.post-feature:hover h3{color:var(--primary)}
.post-feature p{
  color:var(--sub);font-size:15.5px;margin-top:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-meta{display:flex;align-items:center;gap:14px;margin-top:18px;font-size:13px;color:var(--muted)}
.posts-list{background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm)}
.posts-list li + li{border-top:1px solid var(--divider)}
.posts-list a{
  display:flex;gap:16px;padding:18px 20px;color:var(--ink);transition:background .2s ease;
}
.posts-list a:hover{background:#F5F8FF;color:var(--ink)}
.posts-list .pl-thumb{width:96px;flex:none;border-radius:var(--r-img);overflow:hidden;background:#EEF1F8}
.posts-list .pl-thumb img{width:100%;aspect-ratio:4/3;object-fit:cover}
.posts-list .pl-body{min-width:0;flex:1}
.posts-list h3{
  font-size:16px;font-weight:600;line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.posts-list a:hover h3{color:var(--primary)}
.posts-list .pl-meta{display:flex;justify-content:space-between;gap:10px;margin-top:8px;font-size:12.5px;color:var(--muted)}
.empty-state{
  background:#fff;border:1px dashed var(--border);border-radius:var(--r-card);
  padding:56px 24px;text-align:center;
}
.empty-state .es-icon{
  width:56px;height:56px;border-radius:50%;background:var(--primary-light);color:var(--primary);
  display:flex;align-items:center;justify-content:center;margin:0 auto 18px;
}
.empty-state .es-icon svg{width:26px;height:26px}
.empty-state h3{font-size:19px;font-weight:600}
.empty-state p{color:var(--sub);margin-top:8px}

/* FAQ */
.faq-list{max-width:800px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--sh-sm)}
.faq-item + .faq-item{border-top:1px solid var(--divider)}
.faq-item summary{
  display:flex;gap:18px;align-items:flex-start;cursor:pointer;list-style:none;
  padding:22px 26px;font-size:16.5px;font-weight:600;transition:background .2s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:#F5F8FF}
.faq-item summary .num{font-size:13px;font-weight:700;color:var(--primary);background:var(--primary-light);border-radius:8px;padding:3px 9px;flex:none;margin-top:3px}
.faq-item summary .q{flex:1}
.faq-item summary .chev{width:20px;height:20px;flex:none;color:var(--muted);transition:transform .2s ease;margin-top:4px}
.faq-item[open] summary .chev{transform:rotate(180deg);color:var(--primary)}
.faq-item .answer{padding:0 26px 24px 78px;color:var(--sub);font-size:15.5px;animation:fadeIn .2s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:none}}

/* CTA 条 */
.cta-band{
  background:var(--primary-light);border-top:1px solid #DDE6FF;border-bottom:1px solid #DDE6FF;
  padding:64px 0;
}
.cta-band .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-band h2{font-size:28px;font-weight:700;line-height:1.4}
.cta-band p{color:var(--sub);margin-top:10px;max-width:620px}
.cta-band .cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:#0F1B3D;color:#C6CEE6;padding:72px 0 28px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:36px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#8892B4}
.site-footer .brand:hover .brand-name{color:#fff}
.footer-about{font-size:14.5px;line-height:1.85;color:#9AA5C4;margin-top:18px;max-width:300px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:8px}
.footer-col ul li{margin-top:14px}
.footer-col ul li a,.footer-col ul li span{font-size:14.5px;color:#9AA5C4;display:inline-block;line-height:1.6}
.footer-col ul li a:hover{color:var(--gold)}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.08);
  text-align:center;font-size:13px;color:#8892B4;
}
.footer-bottom a{color:#8892B4}
.footer-bottom a:hover{color:var(--gold)}

/* 响应式 */
@media (max-width:1279px){
  .container{max-width:1120px}
}
@media (max-width:1023px){
  .container{padding:0 24px}
  .section{padding:72px 0}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .hero{padding:56px 0 44px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-copy h1{font-size:34px}
  .hero-media{order:2}
  .trust-bar{grid-template-columns:1fr}
  .trust-item + .trust-item{border-left:0;border-top:1px dashed var(--border)}
  .value-grid{grid-template-columns:1fr}
  .spec-grid{grid-template-columns:1fr}
  .reviews{grid-template-columns:repeat(2,1fr)}
  .reviews .col:nth-child(3){margin-top:0}
  .download-panel{grid-template-columns:1fr;padding:28px}
  .posts-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .section-head h2{font-size:26px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .section-head{margin-bottom:28px}
  .section-head h2{font-size:24px}
  .nav{height:60px}
  .nav-actions .btn:not(.btn-nav-download){display:none}
  .hero{padding:40px 0 34px}
  .hero-copy h1{font-size:30px}
  .hero-lead{font-size:16px}
  .hero-cta{flex-direction:column;align-items:stretch}
  .hero-cta .btn{width:100%}
  .value-col{gap:18px}
  .info-card,.feature-card .fc-body{padding:22px}
  .reviews{grid-template-columns:1fr;gap:18px}
  .reviews .col:nth-child(2),.reviews .col:nth-child(3){margin-top:0}
  .carousel-track{gap:16px}
  .slide{flex:0 0 78%}
  .download-actions{grid-template-columns:1fr}
  .download-meta{grid-template-columns:1fr}
  .faq-item summary{padding:18px 20px;font-size:16px;gap:12px}
  .faq-item .answer{padding:0 20px 20px 20px}
  .cta-band{padding:44px 0}
  .cta-band .cta-actions{width:100%;flex-direction:column}
  .cta-band .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .posts-list .pl-thumb{width:78px}
}
@media (max-width:520px){
  .brand-sub{display:none}
  .slide{flex:0 0 86%}
  .post-feature .pf-body{padding:20px}
}

/* roulang page: article */
:root{
  --primary:#2A50D8;
  --primary-dark:#1B3AA6;
  --primary-soft:#EAF0FF;
  --gold:#F2A93B;
  --cyan:#2BB3C0;
  --bg:#FAFBFE;
  --card:#FFFFFF;
  --ink:#0F1B3D;
  --ink-2:#4B5878;
  --ink-3:#8A93AB;
  --border:#E4E8F2;
  --line:#EEF1F8;
  --footer:#0F1B3D;
  --success:#1EA97C;
  --warning:#E8A13A;
  --danger:#E0524B;
  --radius-card:16px;
  --radius-img:12px;
  --radius-btn:10px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,27,61,.06);
  --shadow-md:0 8px 24px rgba(15,27,61,.08);
  --shadow-lg:0 18px 48px rgba(15,27,61,.12);
  --container:1200px;
}
*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:96px;}
body{
  margin:0;
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-style:none;}
a{color:inherit;text-decoration:none;}
button{font:inherit;color:inherit;}
ul,ol{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700;color:var(--ink);}
p{margin:0;}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 32px;}

/* ---------- 按钮体系 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;border-radius:var(--radius-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:background .2s ease,color .2s ease,box-shadow .2s ease,transform .2s ease,border-color .2s ease;
}
.btn svg{width:18px;height:18px;flex:none;}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--primary-dark);box-shadow:var(--shadow-lg);transform:translateY(-1px);color:#fff;}
.btn-primary:active{transform:translateY(1px);}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--primary);}
.btn-secondary:hover{background:var(--primary-soft);}
.btn-gold{background:var(--gold);color:#fff;box-shadow:var(--shadow-sm);}
.btn-gold:hover{background:#DE9526;box-shadow:var(--shadow-lg);transform:translateY(-1px);color:#fff;}
.btn-ghost{background:transparent;color:var(--ink-2);border-color:var(--border);}
.btn-ghost:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-soft);}
.btn-sm{padding:9px 16px;font-size:14px;}
.btn-lg{padding:15px 30px;font-size:16px;}
.btn-block{width:100%;}
.btn[disabled]{background:#C9D0E0;border-color:#C9D0E0;color:#fff;cursor:not-allowed;box-shadow:none;transform:none;}

/* ---------- 标签 / 徽章 ---------- */
.tag{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:var(--radius-pill);background:var(--primary-soft);color:var(--primary);font-size:13px;font-weight:600;}
.tag-cyan{background:transparent;border:1px solid var(--cyan);color:#1F8E99;}
.tag-gold{background:rgba(242,169,59,.14);color:#B5761B;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,251,254,.94);
  border-bottom:1px solid var(--border);
  backdrop-filter:blur(10px);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--shadow-md);}
.nav{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;}
.brand-mark{
  width:38px;height:38px;border-radius:11px;flex:none;
  background:linear-gradient(140deg,#2A50D8,#1B3AA6);
  display:grid;place-items:center;box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-name{font-size:17px;font-weight:700;color:var(--ink);white-space:nowrap;}
.brand-sub{font-size:10px;letter-spacing:.16em;font-weight:600;color:var(--ink-3);}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{position:relative;padding:8px 12px;font-size:15px;font-weight:600;color:var(--ink-2);border-radius:8px;transition:color .2s ease;}
.nav-links a::after{
  content:"";position:absolute;left:12px;right:12px;bottom:2px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform .2s ease;
}
.nav-links a:hover{color:var(--primary);}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1);}
.nav-links a.active{color:var(--primary);}
.nav-actions{display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--border);
  background:#fff;cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:11px;width:20px;height:2px;border-radius:2px;background:var(--ink);
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle span{top:20px;}
.nav-toggle span::before{top:-6px;left:0;}
.nav-toggle span::after{top:6px;left:0;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{transform:translateY(6px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{transform:translateY(-6px) rotate(-45deg);}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 20px 24px;}
.mobile-drawer.open{display:block;}
.drawer-link{display:block;padding:13px 4px;font-size:16px;font-weight:600;color:var(--ink-2);border-bottom:1px solid var(--line);}
.drawer-link.active,.drawer-link:hover{color:var(--primary);}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:18px;}

/* ---------- 面包屑 ---------- */
.crumbs{padding:22px 0 0;}
.crumbs ol{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);}
.crumbs li{display:flex;align-items:center;gap:8px;}
.crumbs li+li::before{content:"/";color:#C4CBDC;}
.crumbs a{color:var(--ink-2);}
.crumbs a:hover{color:var(--primary);}
.crumbs .current{color:var(--ink);font-weight:600;max-width:320px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* ---------- 文章头 ---------- */
.article-head{padding:24px 0 40px;}
.article-head .eyebrow{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-bottom:18px;}
.article-head h1{font-size:40px;line-height:1.28;letter-spacing:-.01em;max-width:900px;}
.article-lead{margin-top:18px;max-width:820px;font-size:17px;color:var(--ink-2);line-height:1.85;}
.meta-row{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px 22px;
  margin-top:22px;padding-top:18px;border-top:1px dashed #D9DFEC;
  font-size:14px;color:var(--ink-3);
}
.meta-row .meta-item{display:inline-flex;align-items:center;gap:7px;}
.meta-row svg{width:15px;height:15px;color:var(--ink-3);}
.article-cover{margin-top:30px;border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-md);background:#EEF1F8;}
.article-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* ---------- 文章布局 ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:56px;align-items:start;
  padding:8px 0 72px;
}
.article-body{max-width:780px;font-size:17px;line-height:1.9;color:#243052;}
.article-body>*+*{margin-top:18px;}
.article-body h2{
  font-size:30px;line-height:1.35;margin-top:44px;padding-left:14px;
  border-left:4px solid var(--primary);color:var(--ink);
}
.article-body h3{font-size:22px;font-weight:600;margin-top:32px;color:var(--primary);}
.article-body h4{font-size:18px;margin-top:26px;color:var(--ink);}
.article-body p{font-size:17px;line-height:1.9;}
.article-body ul,.article-body ol{padding-left:4px;}
.article-body li{position:relative;padding-left:22px;margin-top:10px;}
.article-body ul li::before{
  content:"✦";position:absolute;left:0;top:0;color:var(--primary);font-size:13px;
}
.article-body ol{counter-reset:arc;}
.article-body ol li{counter-increment:arc;}
.article-body ol li::before{
  content:counter(arc);position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:50%;
  background:var(--primary-soft);color:var(--primary);font-size:11px;font-weight:700;
  display:grid;place-items:center;line-height:1;
}
.article-body blockquote{
  margin:26px 0;padding:18px 22px;background:var(--primary-soft);
  border-left:4px solid var(--primary);border-radius:0 var(--radius-img) var(--radius-img) 0;color:var(--ink-2);
}
.article-body blockquote p{font-size:16px;line-height:1.8;}
.article-body img{border-radius:var(--radius-img);width:100%;margin:26px 0 0;}
.article-body figure{margin:26px 0;}
.article-body figcaption{font-size:13px;color:var(--ink-3);text-align:center;margin-top:10px;}
.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px;}
.article-body a:hover{color:var(--primary-dark);}
.article-body strong{color:var(--ink);}
.article-body code{
  background:var(--primary-soft);color:var(--primary-dark);border-radius:6px;
  padding:2px 6px;font-size:14px;
}
.article-body table{width:100%;border-collapse:collapse;margin:26px 0;font-size:15px;}
.article-body th,.article-body td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;}
.article-body th{background:var(--primary-soft);color:var(--primary-dark);font-weight:600;}
.article-body tr:nth-child(even) td{background:#F7F9FE;}
.article-body hr{border:0;border-top:1px dashed #D9DFEC;margin:36px 0;}

/* 无内容空态 */
.empty-state{
  max-width:780px;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:52px 40px;text-align:center;box-shadow:var(--shadow-sm);
}
.empty-state .empty-icon{
  width:64px;height:64px;margin:0 auto 20px;border-radius:18px;background:var(--primary-soft);
  display:grid;place-items:center;color:var(--primary);
}
.empty-state .empty-icon svg{width:30px;height:30px;}
.empty-state h2{font-size:22px;margin-bottom:10px;}
.empty-state p{color:var(--ink-2);font-size:15px;margin-bottom:24px;}

/* ---------- 侧栏 ---------- */
.article-sidebar{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px;}
.side-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-title{font-size:16px;font-weight:700;margin-bottom:14px;display:flex;align-items:center;gap:8px;}
.side-title::before{content:"";width:4px;height:15px;border-radius:2px;background:var(--primary);}
.toc-list li+li{margin-top:2px;}
.toc-list a{
  display:block;padding:8px 10px;border-radius:8px;font-size:14px;line-height:1.6;color:var(--ink-2);
  transition:background .2s ease,color .2s ease;
}
.toc-list a:hover,.toc-list a.is-active{background:var(--primary-soft);color:var(--primary);}
.side-download{background:linear-gradient(180deg,#F5F8FF,#FFFFFF);}
.side-download h3{font-size:17px;margin:12px 0 8px;}
.side-download p{font-size:14px;color:var(--ink-2);line-height:1.7;margin-bottom:16px;}
.side-download .btn+.btn{margin-top:10px;}
.hot-list li{display:flex;gap:10px;align-items:flex-start;}
.hot-list li+li{margin-top:2px;padding-top:2px;}
.hot-list a{
  display:flex;gap:10px;padding:9px 8px;border-radius:8px;width:100%;
  font-size:14px;line-height:1.6;color:var(--ink-2);transition:background .2s ease,color .2s ease;
}
.hot-list a:hover{background:#F5F8FF;color:var(--primary);}
.hot-index{
  flex:none;width:20px;height:20px;border-radius:6px;background:var(--primary-soft);color:var(--primary);
  font-size:12px;font-weight:700;display:grid;place-items:center;margin-top:3px;
}
.hot-list a:hover .hot-index{background:var(--primary);color:#fff;}

/* ---------- 标签行 ---------- */
.tag-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin-top:44px;padding-top:24px;border-top:1px dashed #D9DFEC;}
.tag-row .label{font-size:14px;color:var(--ink-3);margin-right:4px;}
.tag-row a.tag:hover{background:var(--primary);color:#fff;}

/* ---------- 上下篇 ---------- */
.post-nav{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-top:32px;}
.post-nav-card{
  display:block;background:var(--card);border:1px solid var(--border);border-radius:var(--radius-card);
  padding:20px 22px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.post-nav-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#CFD9F2;}
.post-nav-card .dir{font-size:13px;font-weight:600;color:var(--cyan);}
.post-nav-card h3{font-size:16px;margin:8px 0 6px;line-height:1.55;}
.post-nav-card:hover h3{color:var(--primary);}
.post-nav-card .time{font-size:13px;color:var(--ink-3);}
.post-nav-card.next{text-align:right;}

/* ---------- 相关推荐 ---------- */
.related{margin-top:56px;}
.related-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:22px;}
.related-head h2{font-size:24px;}
.related-head p{font-size:14px;color:var(--ink-3);margin-top:6px;}
.related-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px;}
.related-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--border);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);}
.related-card .thumb{background:#EEF1F8;}
.related-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.related-card .body{padding:18px 20px 20px;}
.related-card h3{font-size:16px;line-height:1.55;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.related-card:hover h3{color:var(--primary);}
.related-card .time{display:block;margin-top:10px;font-size:13px;color:var(--ink-3);}

/* ---------- 文末按钮 ---------- */
.end-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:36px;}

/* ---------- CTA 条 ---------- */
.cta-band{background:var(--primary-soft);padding:56px 0;}
.cta-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:24px;
  background:#fff;border-radius:var(--radius-card);padding:32px 36px;box-shadow:var(--shadow-md);
}
.cta-inner h2{font-size:24px;margin-bottom:8px;}
.cta-inner p{font-size:15px;color:var(--ink-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* ---------- Footer ---------- */
.site-footer{background:var(--footer);color:#C7CFE6;padding:64px 0 28px;margin-top:0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:#8A93AB;}
.footer-about{margin-top:16px;font-size:14px;line-height:1.8;color:#98A2C0;max-width:320px;}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600;}
.footer-col li+li{margin-top:14px;}
.footer-col a,.footer-col span{font-size:14px;color:#A7B1CC;transition:color .2s ease;}
.footer-col a:hover{color:var(--gold);}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);
  text-align:center;font-size:13px;color:#8A93AB;
}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .container{max-width:1140px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav{height:64px;}
  .nav-links{display:none;}
  .nav-toggle{display:block;}
  .article-head h1{font-size:32px;}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:36px;padding-bottom:56px;}
  .article-sidebar{position:static;}
  .related-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .article-body h2{font-size:25px;}
  .article-body h3{font-size:20px;}
}
@media (max-width:767px){
  .container{padding:0 20px;}
  .brand-name{font-size:15px;}
  .brand-sub{display:none;}
  .btn-nav-download{display:none;}
  .article-head h1{font-size:27px;}
  .article-head{padding:18px 0 30px;}
  .article-body{font-size:17px;line-height:1.9;}
  .article-body h2{font-size:23px;}
  .article-body h3{font-size:19px;}
  .crumbs .current{max-width:150px;}
  .post-nav{grid-template-columns:1fr;}
  .post-nav-card.next{text-align:left;}
  .related-grid{grid-template-columns:1fr;}
  .cta-inner{padding:26px 22px;}
  .cta-actions{width:100%;}
  .cta-actions .btn{width:100%;}
  .end-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;}
  .empty-state{padding:38px 22px;}
}
@media (max-width:519px){
  .meta-row{gap:8px 16px;font-size:13px;}
  .btn-lg{padding:14px 20px;font-size:15px;}
}

/* roulang page: category1 */
:root{
  --brand:#2A50D8;
  --brand-dark:#1B3AA6;
  --brand-soft:#EAF0FF;
  --gold:#F2A93B;
  --cyan:#2BB3C0;
  --bg:#FAFBFE;
  --card:#FFFFFF;
  --ink:#0F1B3D;
  --ink-2:#4B5878;
  --ink-3:#8A93AB;
  --border:#E4E8F2;
  --line:#EEF1F8;
  --footer:#0F1B3D;
  --success:#1EA97C;
  --warning:#E8A13A;
  --error:#E0524B;
  --shadow-sm:0 1px 2px rgba(15,27,61,.06);
  --shadow-md:0 8px 24px rgba(15,27,61,.08);
  --shadow-lg:0 18px 48px rgba(15,27,61,.12);
  --r-card:16px;
  --r-img:12px;
  --r-input:10px;
  --r-btn:10px;
  --container:1200px;
  --font:"Inter","PingFang SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font);
  font-size:16.5px;
  line-height:1.8;
  color:var(--ink);
  background-color:var(--bg);
  background-image:radial-gradient(rgba(42,80,216,.035) 1px, transparent 1px);
  background-size:22px 22px;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img);}
a{color:var(--brand);text-decoration:none;transition:color .2s ease;}
a:hover{color:var(--brand-dark);}
ul,ol{margin:0;padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
h1,h2,h3,h4{margin:0;line-height:1.32;font-weight:700;color:var(--ink);}
p{margin:0;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 32px;
}
@media (min-width:1440px){ .container{max-width:1280px;} }

/* ------- 通用按钮 ------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:11px 22px;
  border-radius:var(--r-btn);
  font-size:15.5px;
  font-weight:600;
  line-height:1.2;
  border:1px solid transparent;
  cursor:pointer;
  transition:all .2s ease;
  white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:none;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-sm);}
.btn-primary:hover{background:var(--brand-dark);color:#fff;box-shadow:var(--shadow-lg);transform:translateY(-1px);}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--shadow-sm);}
.btn-secondary{background:#fff;color:var(--brand);border-color:var(--brand);}
.btn-secondary:hover{background:var(--brand-soft);color:var(--brand-dark);border-color:var(--brand-dark);}
.btn-gold{background:var(--gold);color:#3A2400;box-shadow:var(--shadow-sm);}
.btn-gold:hover{background:#E09B2C;color:#3A2400;box-shadow:var(--shadow-lg);transform:translateY(-1px);}
.btn-ghost{background:var(--brand-soft);color:var(--brand);border-color:transparent;}
.btn-ghost:hover{background:#DDE7FF;color:var(--brand-dark);}
.btn-sm{padding:9px 16px;font-size:14.5px;min-height:40px;}
.btn-block{width:100%;}
.btn[disabled],.btn.is-disabled{background:#C9D0E0;color:#fff;border-color:#C9D0E0;cursor:not-allowed;box-shadow:none;transform:none;}

.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  background:var(--brand-soft);color:var(--brand);
  font-size:13px;font-weight:600;line-height:1.5;
}
.badge-cyan{background:transparent;border:1px solid var(--cyan);color:#1E8D98;}
.badge-gold{background:rgba(242,169,59,.14);color:#9A6412;}

/* ------- 头部导航 ------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(250,251,254,.92);
  backdrop-filter:saturate(180%) blur(10px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease,background .2s ease;
}
.site-header.is-scrolled{background:#fff;box-shadow:var(--shadow-md);}
.nav{display:flex;align-items:center;gap:24px;height:72px;}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;flex:none;
  background:linear-gradient(150deg,#2A50D8 0%,#1B3AA6 100%);
  display:flex;align-items:center;justify-content:center;
  box-shadow:var(--shadow-sm);
}
.brand-mark svg{width:22px;height:22px;}
.brand-text{display:flex;flex-direction:column;line-height:1.2;}
.brand-name{font-size:16px;font-weight:700;color:var(--ink);letter-spacing:.2px;}
.brand-sub{font-size:10.5px;font-weight:600;letter-spacing:1.6px;color:var(--ink-3);}
.nav-links{display:flex;align-items:center;gap:6px;margin-left:12px;flex:1;}
.nav-links a{
  position:relative;padding:10px 14px;border-radius:8px;
  font-size:15.5px;font-weight:600;color:var(--ink-2);
  transition:color .2s ease,background .2s ease;
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;transform:scaleX(0);
  transition:transform .2s ease;
}
.nav-links a:hover{color:var(--brand);background:var(--brand-soft);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex:none;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;
  border:1px solid var(--border);background:#fff;cursor:pointer;
  align-items:center;justify-content:center;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--ink);border-radius:2px;position:relative;transition:.2s ease;}
.nav-toggle span::before,.nav-toggle span::after{
  content:"";position:absolute;left:0;width:18px;height:2px;background:var(--ink);border-radius:2px;transition:.2s ease;
}
.nav-toggle span::before{top:-6px;}
.nav-toggle span::after{top:6px;}
.nav-toggle[aria-expanded="true"] span{background:transparent;}
.nav-toggle[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.nav-toggle[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

.mobile-drawer{
  display:none;flex-direction:column;gap:6px;
  padding:12px 32px 20px;background:#fff;border-top:1px solid var(--line);
  box-shadow:var(--shadow-md);
}
.mobile-drawer.open{display:flex;}
.drawer-link{
  padding:12px 14px;border-radius:10px;font-size:16px;font-weight:600;color:var(--ink-2);
  border:1px solid transparent;
}
.drawer-link:hover{background:var(--brand-soft);color:var(--brand);}
.drawer-link.active{background:var(--brand-soft);color:var(--brand);border-color:#D6E1FF;}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:8px;}

/* ------- 分类页头图带 ------- */
.page-band{
  position:relative;
  background-image:linear-gradient(100deg,rgba(15,27,61,.92) 0%,rgba(27,58,166,.86) 55%,rgba(42,80,216,.72) 100%),url("/assets/images/backpic/back-1.webp");
  background-size:cover;
  background-position:center;
  color:#fff;
  padding:64px 0 68px;
  overflow:hidden;
}
.page-band::after{
  content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(255,255,255,.5) 1px, transparent 1px);
  background-size:34px 34px;opacity:.16;pointer-events:none;
}
.page-band .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(255,255,255,.78);margin-bottom:22px;}
.crumb a{color:rgba(255,255,255,.86);}
.crumb a:hover{color:var(--gold);}
.crumb span.sep{color:rgba(255,255,255,.45);}
.crumb .current{color:#fff;font-weight:600;}
.page-band h1{
  color:#fff;font-size:40px;line-height:1.28;letter-spacing:.4px;max-width:900px;
}
.page-band .band-note{
  margin-top:18px;max-width:760px;font-size:16.5px;line-height:1.85;color:rgba(255,255,255,.9);
}
.band-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
.band-tags span{
  display:inline-flex;align-items:center;gap:6px;
  padding:6px 14px;border-radius:999px;
  background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.28);
  font-size:13px;font-weight:600;color:#fff;
}
.band-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px;}
.band-actions .btn-secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,.6);}
.band-actions .btn-secondary:hover{background:rgba(255,255,255,.14);color:#fff;border-color:#fff;}

/* ------- 通用板块 ------- */
.section{padding:72px 0;}
.section-sm{padding:56px 0;}
.section-title{margin-bottom:32px;max-width:780px;}
.section-title .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:1.4px;text-transform:uppercase;
  color:var(--cyan);margin-bottom:12px;
}
.section-title h2{font-size:30px;line-height:1.34;}
.section-title p{margin-top:14px;color:var(--ink-2);font-size:16.5px;}
.dashed-rule{height:1px;border-top:1px dashed var(--border);margin:0;}

/* ------- 布局：目录 + 卡片网格 ------- */
.layout-split{
  display:grid;
  grid-template-columns:280px minmax(0,1fr);
  gap:40px;
  align-items:start;
}
.side-toc{
  position:sticky;top:96px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-md);padding:24px;
}
.side-toc h3{font-size:16px;margin-bottom:6px;}
.side-toc .toc-hint{font-size:13px;color:var(--ink-3);margin-bottom:16px;}
.side-toc ol{display:flex;flex-direction:column;gap:2px;}
.side-toc ol a{
  display:flex;align-items:center;gap:10px;
  padding:10px 12px;border-radius:10px;
  font-size:15px;font-weight:600;color:var(--ink-2);
  border-left:3px solid transparent;
  transition:all .2s ease;
}
.side-toc ol a:hover{background:var(--brand-soft);color:var(--brand);}
.side-toc ol a.current{background:var(--brand-soft);color:var(--brand);border-left-color:var(--brand);}
.side-toc .toc-index{
  width:22px;height:22px;border-radius:999px;flex:none;
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;
}
.side-toc .toc-cta{
  margin-top:20px;padding-top:20px;border-top:1px dashed var(--border);
}
.side-toc .toc-cta p{font-size:13.5px;color:var(--ink-3);line-height:1.7;margin-bottom:12px;}

.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.info-card{
  background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-md);padding:28px;
  display:flex;flex-direction:column;gap:16px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.info-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);border-color:#D6E1FF;}
.info-card:hover h3{color:var(--brand);}
.info-card .thumb{
  width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-img);
  background:#EEF1F8;
}
.info-card h3{font-size:22px;line-height:1.4;transition:color .2s ease;}
.info-card .card-desc{font-size:15.5px;color:var(--ink-2);line-height:1.8;}
.dot-list{display:flex;flex-direction:column;gap:8px;}
.dot-list li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);line-height:1.7;
}
.dot-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;
  border-radius:50%;background:var(--brand);opacity:.85;
}
.card-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:auto;}
.card-meta{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-size:13px;color:var(--ink-3);
}

/* ------- 清单卡（浅靛底） ------- */
.checklist{
  background:var(--brand-soft);border-radius:var(--r-card);
  padding:32px;border:1px solid #DCE5FF;
}
.checklist h3{font-size:22px;margin-bottom:8px;}
.checklist > p{font-size:15.5px;color:var(--ink-2);margin-bottom:22px;}
.checklist-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px 28px;}
.check-row{
  display:flex;align-items:flex-start;gap:12px;
  padding:12px 0;border-bottom:1px dashed #D3DEFF;
  font-size:15px;color:var(--ink-2);
}
.check-row:last-child{border-bottom:none;}
.check-row .tick{
  width:22px;height:22px;border-radius:999px;flex:none;margin-top:3px;
  background:#fff;color:var(--brand);display:flex;align-items:center;justify-content:center;
  font-size:13px;font-weight:700;box-shadow:var(--shadow-sm);
}
.check-row strong{color:var(--ink);font-weight:600;}

/* ------- 步骤条 ------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;position:relative;}
.steps::before{
  content:"";position:absolute;left:6%;right:6%;top:26px;height:1px;
  border-top:1px dashed #C9D6F8;z-index:0;
}
.step{
  position:relative;z-index:1;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-card);padding:24px;box-shadow:var(--shadow-sm);
}
.step .step-no{
  width:52px;height:52px;border-radius:999px;background:#fff;
  border:2px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;margin-bottom:16px;box-shadow:var(--shadow-sm);
}
.step h3{font-size:17.5px;margin-bottom:8px;}
.step p{font-size:14.5px;color:var(--ink-2);line-height:1.72;}

/* ------- 平台键值卡 ------- */
.spec-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
.spec-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  box-shadow:var(--shadow-md);padding:28px;
}
.spec-card h3{display:flex;align-items:center;gap:10px;font-size:20px;margin-bottom:18px;}
.spec-card h3 svg{width:22px;height:22px;color:var(--brand);}
.spec-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:48px;padding:0 14px;border-radius:10px;
  font-size:14.5px;
}
.spec-row:nth-child(odd){background:#F5F8FF;}
.spec-row .k{color:var(--ink-3);font-weight:600;flex:none;}
.spec-row .v{color:var(--ink);text-align:right;}

/* ------- 相关分类互链 ------- */
.rel-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;}
.rel-card{
  display:flex;flex-direction:column;gap:10px;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-card);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.rel-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:#D6E1FF;}
.rel-card h3{font-size:18px;}
.rel-card p{font-size:14.5px;color:var(--ink-2);line-height:1.75;}
.rel-card .rel-go{font-size:14px;font-weight:600;color:var(--brand);margin-top:auto;}

/* ------- FAQ ------- */
.faq-wrap{max-width:800px;margin:0 auto;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  width:100%;display:flex;align-items:flex-start;gap:16px;
  padding:22px 0;background:none;border:none;cursor:pointer;text-align:left;
}
.faq-q .num{
  flex:none;width:30px;font-size:15px;font-weight:700;color:var(--brand);line-height:1.7;
}
.faq-q .txt{flex:1;font-size:17px;font-weight:600;color:var(--ink);line-height:1.7;transition:color .2s ease;}
.faq-q:hover .txt{color:var(--brand);}
.faq-q .sign{
  flex:none;width:24px;height:24px;border-radius:999px;background:var(--brand-soft);
  color:var(--brand);font-size:16px;font-weight:700;line-height:24px;text-align:center;
  transition:transform .2s ease,background .2s ease;
}
.faq-q[aria-expanded="true"] .sign{background:var(--brand);color:#fff;transform:rotate(45deg);}
.faq-a{
  max-height:0;overflow:hidden;transition:max-height .2s ease;
}
.faq-a-inner{
  padding:0 0 22px 46px;font-size:15.5px;color:var(--ink-2);line-height:1.85;
}

/* ------- CTA 条 ------- */
.cta-band{
  background:var(--brand-soft);
  border-radius:24px;
  padding:48px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:center;
  border:1px solid #DCE5FF;
}
.cta-band h2{font-size:28px;line-height:1.36;}
.cta-band p{margin-top:12px;font-size:16px;color:var(--ink-2);max-width:620px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}
.cta-note{margin-top:18px;font-size:13.5px;color:var(--ink-3);}

/* ------- 页脚 ------- */
.site-footer{background:var(--footer);color:#C4CCE3;padding:64px 0 28px;margin-top:72px;}
.site-footer .brand-name{color:#fff;}
.site-footer .brand-sub{color:rgba(255,255,255,.5);}
.footer-grid{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-about{margin-top:18px;font-size:14.5px;line-height:1.85;color:rgba(255,255,255,.66);max-width:320px;}
.footer-col h4{color:#fff;font-size:15.5px;margin-bottom:20px;letter-spacing:.3px;}
.footer-col ul{display:flex;flex-direction:column;gap:14px;}
.footer-col a,.footer-col span{font-size:14.5px;color:rgba(255,255,255,.68);}
.footer-col a:hover{color:var(--gold);}
.footer-bottom{
  padding-top:24px;text-align:center;font-size:13px;color:rgba(255,255,255,.5);
}

/* ------- 响应式 ------- */
@media (max-width:1279px){
  .container{padding:0 28px;}
}
@media (max-width:1023px){
  .container{padding:0 24px;}
  .nav{height:68px;gap:16px;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .nav-actions .btn-nav-download{display:inline-flex;}
  .nav-actions .btn-secondary{display:none;}
  .page-band{padding:48px 0 52px;}
  .page-band h1{font-size:32px;}
  .section{padding:64px 0;}
  .layout-split{grid-template-columns:1fr;gap:28px;}
  .side-toc{position:static;}
  .side-toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr));}
  .steps::before{display:none;}
  .spec-grid{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr 1fr;}
  .cta-band{grid-template-columns:1fr;padding:36px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  body{font-size:16px;line-height:1.75;}
  .container{padding:0 20px;}
  .mobile-drawer{padding:12px 20px 20px;}
  .brand-sub{display:none;}
  .brand-name{font-size:15px;}
  .nav-actions .btn-nav-download{font-size:14px;padding:9px 14px;}
  .page-band{padding:36px 0 42px;}
  .page-band h1{font-size:30px;}
  .page-band .band-note{font-size:15.5px;}
  .band-actions{flex-direction:column;}
  .band-actions .btn{width:100%;}
  .section{padding:48px 0;}
  .section-title h2{font-size:24px;}
  .side-toc ol{grid-template-columns:1fr;}
  .card-grid{grid-template-columns:1fr;}
  .checklist{padding:24px 20px;}
  .checklist-grid{grid-template-columns:1fr;}
  .steps{grid-template-columns:1fr;}
  .rel-grid{grid-template-columns:1fr;}
  .cta-band{padding:28px 22px;border-radius:18px;}
  .cta-band h2{font-size:23px;}
  .cta-actions .btn{width:100%;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .faq-q .txt{font-size:16px;}
  .faq-a-inner{padding-left:0;}
}
@media (max-width:520px){
  .brand-mark{width:34px;height:34px;border-radius:10px;}
  .page-band h1{font-size:26px;}
  .info-card{padding:22px;}
  .spec-card{padding:22px;}
  .spec-row{flex-direction:column;align-items:flex-start;gap:2px;padding:10px 14px;min-height:0;}
  .spec-row .v{text-align:left;}
}

/* roulang page: category2 */
:root{
  --primary:#2A50D8;
  --primary-dark:#1B3AA6;
  --primary-light:#EAF0FF;
  --gold:#F2A93B;
  --cyan:#2BB3C0;
  --bg:#FAFBFE;
  --card:#FFFFFF;
  --text:#0F1B3D;
  --text-2:#4B5878;
  --text-3:#8A93AB;
  --border:#E4E8F2;
  --divider:#EEF1F8;
  --footer:#0F1B3D;
  --success:#1EA97C;
  --warn:#E8A13A;
  --error:#E0524B;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(15,27,61,.06);
  --sh-md:0 8px 24px rgba(15,27,61,.08);
  --sh-lg:0 18px 48px rgba(15,27,61,.12);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
  font-size:17px;
  line-height:1.8;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-img)}
a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}
button{font:inherit;color:inherit}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700;color:var(--text)}
h1{font-size:40px}
h2{font-size:30px}
h3{font-size:22px;font-weight:600}
h4{font-size:18px}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}

.container{max-width:1200px;margin:0 auto;padding:0 32px}
.section{padding:96px 0}
.section-tight{padding:64px 0}
.section-alt{background:#fff;border-top:1px solid var(--divider);border-bottom:1px solid var(--divider)}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head .eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--primary);background:var(--primary-light);border-radius:999px;padding:4px 12px;margin-bottom:14px;letter-spacing:.04em}
.sec-head h2{margin-bottom:14px}
.sec-head p{color:var(--text-2);font-size:16px}
.sec-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;flex-wrap:wrap}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:16px;font-weight:600;line-height:1;
  padding:14px 24px;border-radius:var(--r-btn);border:1px solid transparent;
  cursor:pointer;transition:all .2s ease;white-space:nowrap;
}
.btn svg{width:18px;height:18px;flex:0 0 auto}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;box-shadow:var(--sh-lg);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm)}
.btn-secondary{background:#fff;color:var(--primary);border-color:var(--primary)}
.btn-secondary:hover{background:var(--primary-light);color:var(--primary-dark)}
.btn-gold{background:var(--gold);color:#3A2600;border-radius:999px}
.btn-gold:hover{background:#E39A26;color:#3A2600;box-shadow:var(--sh-md);transform:translateY(-1px)}
.btn-ghost{background:transparent;color:var(--primary);border-color:var(--border)}
.btn-ghost:hover{background:var(--primary-light);border-color:var(--primary);color:var(--primary-dark)}
.btn-sm{padding:10px 18px;font-size:15px}
.btn-lg{padding:16px 30px;font-size:17px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#C9D0E0;color:#fff;border-color:#C9D0E0;cursor:not-allowed;transform:none;box-shadow:none}

/* 徽章 */
.badge{display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;border-radius:999px;padding:4px 10px;background:var(--primary-light);color:var(--primary)}
.badge-cyan{background:rgba(43,179,192,.1);color:#1E8B96;border:1px solid rgba(43,179,192,.35)}
.badge-gold{background:rgba(242,169,59,.14);color:#9A6208}

/* 头部导航 */
.site-header{
  position:sticky;top:0;z-index:60;background:rgba(250,251,254,.92);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--border);transition:box-shadow .2s ease,background .2s ease;
}
.site-header.scrolled{background:#fff;box-shadow:var(--sh-md)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:72px}
.brand{display:flex;align-items:center;gap:12px;color:var(--text)}
.brand:hover{color:var(--text)}
.brand-mark{width:40px;height:40px;flex:0 0 auto;border-radius:12px;background:var(--primary);display:flex;align-items:center;justify-content:center;box-shadow:var(--sh-sm)}
.brand-mark svg{width:24px;height:24px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:16px;font-weight:700;letter-spacing:.01em}
.brand-sub{font-size:10px;letter-spacing:.18em;color:var(--text-3);font-weight:600}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{position:relative;font-size:15px;font-weight:500;color:var(--text-2);padding:6px 0}
.nav-links a::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--primary);border-radius:2px;transform:scaleX(0);transform-origin:left;transition:transform .2s ease}
.nav-links a:hover{color:var(--primary)}
.nav-links a:hover::after{transform:scaleX(1)}
.nav-links a.active{color:var(--primary);font-weight:600}
.nav-links a.active::after{transform:scaleX(1)}
.nav-actions{display:flex;align-items:center;gap:12px}
.nav-toggle{display:none;width:44px;height:44px;border:1px solid var(--border);background:#fff;border-radius:12px;align-items:center;justify-content:center;cursor:pointer}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);position:relative;border-radius:2px}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0;width:18px;height:2px;background:var(--text);border-radius:2px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{display:none;border-top:1px solid var(--divider);background:#fff;padding:16px 24px 24px}
.mobile-drawer.open{display:block}
.drawer-link{display:block;padding:14px 4px;font-size:16px;font-weight:500;color:var(--text-2);border-bottom:1px solid var(--divider)}
.drawer-link:hover,.drawer-link.active{color:var(--primary);font-weight:600}
.drawer-actions{display:flex;flex-direction:column;gap:12px;margin-top:18px}

/* 页头带 */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--primary-light);
  background-image:linear-gradient(rgba(234,240,255,.93),rgba(234,240,255,.97)),url('/assets/images/backpic/back-2.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--border);
  padding:84px 0 68px;
}
.page-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:radial-gradient(rgba(42,80,216,.05) 1px,transparent 1px);
  background-size:24px 24px;
}
.page-hero .container{position:relative;z-index:1}
.crumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:18px}
.crumb a{color:var(--text-2)}
.crumb a:hover{color:var(--primary)}
.page-hero h1{max-width:900px;margin-bottom:18px}
.page-hero .hero-lead{max-width:760px;color:var(--text-2);font-size:17px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-stats{display:flex;flex-wrap:wrap;gap:36px;margin-top:36px;padding-top:28px;border-top:1px dashed #C9D3EE}
.hero-stat strong{display:block;font-size:26px;font-weight:700;color:var(--primary)}
.hero-stat span{font-size:14px;color:var(--text-3)}

/* 步骤条 */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:20px;counter-reset:st}
.step{position:relative;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px 22px;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.step:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#D5E0FF}
.step::after{content:"";position:absolute;top:42px;right:-20px;width:20px;border-top:1px dashed #C1CDF0}
.step:last-child::after{display:none}
.step-num{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:10px;background:var(--primary-light);color:var(--primary);font-size:14px;font-weight:700;margin-bottom:14px}
.step h3{font-size:18px;margin-bottom:8px}
.step p{font-size:14px;color:var(--text-2);line-height:1.7}

/* 混排卡片 */
.mix-grid{display:grid;grid-template-columns:1.35fr 1fr;grid-template-rows:auto auto;gap:24px}
.card{background:var(--card);border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-md);padding:28px;transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.card:hover{transform:translateY(-2px);box-shadow:var(--sh-lg)}
.card h3{transition:color .2s ease}
.card:hover h3{color:var(--primary)}
.mix-lg{grid-row:1 / span 2;display:flex;flex-direction:column;padding:0;overflow:hidden}
.mix-lg .thumb{aspect-ratio:16/10;width:100%;object-fit:cover;border-radius:0;background:var(--divider)}
.mix-lg .body{padding:28px;display:flex;flex-direction:column;gap:14px;flex:1}
.mix-sm{display:flex;flex-direction:column;gap:12px}
.mix-sm .icon{width:44px;height:44px;border-radius:12px;background:var(--primary-light);display:flex;align-items:center;justify-content:center;color:var(--primary)}
.mix-sm .icon svg{width:22px;height:22px}
.mix-sm p{font-size:15px;color:var(--text-2)}
.point-list{display:flex;flex-direction:column;gap:10px;margin-top:4px}
.point-list li{position:relative;padding-left:20px;font-size:15px;color:var(--text-2)}
.point-list li::before{content:"";position:absolute;left:0;top:11px;width:7px;height:7px;border-radius:50%;background:var(--cyan)}
.card-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:auto;padding-top:8px}

/* 横向卡带 */
.band{display:flex;gap:20px;overflow-x:auto;padding:6px 2px 16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch}
.band::-webkit-scrollbar{height:8px}
.band::-webkit-scrollbar-track{background:var(--divider);border-radius:999px}
.band::-webkit-scrollbar-thumb{background:#C9D3EE;border-radius:999px}
.band-card{flex:0 0 320px;scroll-snap-align:start;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;transition:transform .2s ease,box-shadow .2s ease}
.band-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md)}
.band-card img{aspect-ratio:16/10;width:100%;object-fit:cover;border-radius:0;background:var(--divider)}
.band-card .band-body{padding:20px 22px 24px}
.band-card h3{font-size:18px;margin-bottom:8px}
.band-card p{font-size:14px;color:var(--text-2);line-height:1.7}
.band-index{font-size:13px;font-weight:700;color:var(--cyan);letter-spacing:.08em;display:block;margin-bottom:8px}

/* 列表行 */
.rows{border:1px solid var(--border);border-radius:var(--r-card);background:#fff;overflow:hidden;box-shadow:var(--sh-sm)}
.row{display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center;padding:22px 26px;border-bottom:1px solid var(--divider);transition:background .2s ease}
.row:last-child{border-bottom:0}
.row:hover{background:#F5F8FF}
.row h3{font-size:18px;margin-bottom:6px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row p{font-size:15px;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.row-meta{font-size:13px;color:var(--text-3);text-align:right;white-space:nowrap}

/* 提示条 */
.notice{display:flex;gap:16px;align-items:flex-start;background:var(--primary-light);border:1px solid #D5E0FF;border-radius:var(--r-card);padding:20px 24px}
.notice svg{width:22px;height:22px;color:var(--primary);flex:0 0 auto;margin-top:3px}
.notice strong{display:block;margin-bottom:4px;font-size:16px}
.notice p{font-size:15px;color:var(--text-2)}

/* 分类互链 */
.link-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.link-card{display:flex;flex-direction:column;gap:10px;background:#fff;border:1px solid var(--border);border-radius:var(--r-card);padding:24px;box-shadow:var(--sh-sm);transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}
.link-card:hover{transform:translateY(-2px);box-shadow:var(--sh-md);border-color:#D5E0FF}
.link-card .badge{align-self:flex-start}
.link-card h3{font-size:18px}
.link-card p{font-size:14px;color:var(--text-2)}

/* CTA 条 */
.cta-band{background:var(--primary-light);border-top:1px solid #D9E3FF;padding:64px 0}
.cta-inner{display:flex;align-items:center;justify-content:space-between;gap:32px;flex-wrap:wrap}
.cta-inner h2{font-size:28px;margin-bottom:10px}
.cta-inner p{color:var(--text-2);max-width:620px;font-size:16px}
.cta-actions{display:flex;gap:14px;flex-wrap:wrap}

/* 页脚 */
.site-footer{background:var(--footer);color:#C8D2E8;padding:64px 0 0;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:48px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:#8A93AB}
.site-footer .brand-mark{background:#233A86}
.footer-about{margin-top:18px;font-size:14px;line-height:1.8;color:#9AA6C0;max-width:320px}
.footer-col h4{font-size:15px;color:#fff;margin-bottom:18px;font-weight:600}
.footer-col ul{display:flex;flex-direction:column;gap:14px}
.footer-col a,.footer-col span{font-size:14px;color:#9AA6C0;line-height:1.6}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1);padding:22px 0;text-align:center;font-size:13px;color:#8A93AB}

/* 骨架态 */
.skeleton{background:linear-gradient(90deg,#EEF1F8 25%,#F5F8FF 37%,#EEF1F8 63%);background-size:400% 100%;animation:sk 1.4s ease infinite;border-radius:8px}
@keyframes sk{0%{background-position:100% 50%}100%{background-position:0 50%}}

@media (max-width:1279px){
  .container{max-width:1200px}
}
@media (max-width:1023px){
  h1{font-size:34px}
  h2{font-size:26px}
  .section{padding:72px 0}
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:flex}
  .nav-actions .btn-secondary{display:none}
  .steps{grid-template-columns:repeat(2,1fr)}
  .step::after{display:none}
  .mix-grid{grid-template-columns:1fr;grid-template-rows:none}
  .mix-lg{grid-row:auto}
  .link-grid{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .page-hero{padding:64px 0 52px}
}
@media (max-width:767px){
  body{font-size:16px}
  h1{font-size:30px}
  h2{font-size:24px}
  h3{font-size:19px}
  .section{padding:48px 0}
  .container{padding:0 20px}
  .nav{height:60px;gap:12px}
  .brand-name{font-size:14px}
  .brand-sub{display:none}
  .brand-mark{width:36px;height:36px;border-radius:10px}
  .btn-nav-download{padding:9px 14px;font-size:14px}
  .steps{grid-template-columns:1fr}
  .band-card{flex:0 0 78%}
  .link-grid{grid-template-columns:1fr}
  .row{grid-template-columns:1fr;padding:20px}
  .row-meta{text-align:left}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%;flex-direction:column}
  .cta-actions .btn{width:100%;min-height:44px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .hero-stats{gap:24px}
}

/* roulang page: category3 */
:root{
  --brand:#2A50D8;
  --brand-dark:#1B3AA6;
  --brand-soft:#EAF0FF;
  --gold:#F2A93B;
  --cyan:#2BB3C0;
  --bg:#FAFBFE;
  --card:#FFFFFF;
  --ink:#0F1B3D;
  --ink-2:#4B5878;
  --ink-3:#8A93AB;
  --line:#E4E8F2;
  --line-2:#EEF1F8;
  --success:#1EA97C;
  --warn:#E8A13A;
  --danger:#E0524B;
  --r-card:16px;
  --r-img:12px;
  --r-btn:10px;
  --sh-sm:0 1px 2px rgba(15,27,61,.06);
  --sh-md:0 8px 24px rgba(15,27,61,.08);
  --sh-lg:0 18px 48px rgba(15,27,61,.12);
  --header-h:72px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:system-ui,-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;font-size:16px;line-height:1.8;color:var(--ink);background:var(--bg);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--brand);text-decoration:none}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700}
p{margin:0;color:var(--ink-2)}
ul{margin:0}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 32px}
.clamp2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}

/* ---------- 按钮 ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-size:15px;font-weight:600;line-height:1;border-radius:var(--r-btn);padding:14px 22px;border:1px solid transparent;transition:background .2s ease,box-shadow .2s ease,transform .2s ease,color .2s ease;white-space:nowrap}
.btn svg{width:18px;height:18px;flex:none}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--sh-sm)}
.btn-primary:hover{background:var(--brand-dark);box-shadow:var(--sh-lg);transform:translateY(-1px)}
.btn-primary:active{transform:translateY(1px);box-shadow:var(--sh-sm)}
.btn-secondary{background:#fff;color:var(--brand);border-color:var(--brand)}
.btn-secondary:hover{background:var(--brand-soft)}
.btn-secondary:active{transform:translateY(1px)}
.btn-gold{background:var(--gold);color:#40260A;box-shadow:var(--sh-sm)}
.btn-gold:hover{background:#DE941F;box-shadow:var(--sh-lg);transform:translateY(-1px)}
.btn-ghost{background:var(--brand-soft);color:var(--brand)}
.btn-ghost:hover{background:#DCE7FF}
.btn-sm{padding:10px 16px;font-size:14px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#C9D0E0;color:#fff;border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none}
a:focus-visible,button:focus-visible,.btn:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:var(--r-btn)}

/* ---------- 头部导航 ---------- */
.site-header{position:sticky;top:0;z-index:60;background:rgba(250,251,254,.94);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);transition:box-shadow .2s ease,background .2s ease}
.site-header.scrolled{background:#fff;box-shadow:var(--sh-md)}
.nav{display:flex;align-items:center;gap:26px;height:var(--header-h)}
.brand{display:flex;align-items:center;gap:10px;color:var(--ink)}
.brand-mark{width:36px;height:36px;border-radius:10px;background:linear-gradient(135deg,#2A50D8,#1B3AA6);display:grid;place-items:center;flex:none;box-shadow:var(--sh-sm)}
.brand-mark svg{width:22px;height:22px}
.brand-text{display:flex;flex-direction:column;line-height:1.2}
.brand-name{font-size:15px;font-weight:700;letter-spacing:.2px}
.brand-sub{font-size:10px;color:var(--ink-3);letter-spacing:1.6px}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto}
.nav-links a{position:relative;font-size:15px;color:var(--ink-2);padding:6px 0;font-weight:500;transition:color .2s ease}
.nav-links a:hover{color:var(--brand)}
.nav-links a.active{color:var(--brand);font-weight:600}
.nav-links a.active::after{content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;background:var(--brand)}
.nav-actions{display:flex;align-items:center;gap:10px}
.nav-toggle{display:none;width:42px;height:42px;border:1px solid var(--line);background:#fff;border-radius:10px;position:relative}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{position:absolute;left:50%;width:18px;height:2px;background:var(--ink);border-radius:2px;transform:translateX(-50%);transition:.2s ease;content:""}
.nav-toggle span{top:20px}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}
.mobile-drawer{display:none;flex-direction:column;padding:12px 24px 24px;background:#fff;border-top:1px solid var(--line);box-shadow:var(--sh-md)}
.mobile-drawer.open{display:flex}
.drawer-link{padding:14px 4px;font-size:16px;color:var(--ink-2);border-bottom:1px solid var(--line-2);font-weight:500}
.drawer-link.active{color:var(--brand);font-weight:700}
.drawer-actions{display:flex;flex-direction:column;gap:10px;margin-top:16px}

/* ---------- 页面头图 ---------- */
.page-hero{position:relative;color:#fff;padding:60px 0 56px;background-image:linear-gradient(108deg,rgba(15,27,61,.88),rgba(42,80,216,.66)),url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.76);margin-bottom:20px}
.crumb a{color:rgba(255,255,255,.92)}
.crumb a:hover{color:#fff;text-decoration:underline}
.crumb .sep{opacity:.55}
.page-hero h1{font-size:40px;max-width:880px;letter-spacing:.2px}
.page-hero .lead{margin-top:18px;max-width:760px;font-size:16.5px;color:rgba(255,255,255,.86);line-height:1.9}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px}
.hero-badge{display:inline-flex;align-items:center;gap:8px;padding:7px 14px;border-radius:999px;background:rgba(255,255,255,.14);border:1px solid rgba(255,255,255,.26);font-size:13px;color:#fff}
.hero-badge .dot{width:6px;height:6px;border-radius:50%;background:var(--gold)}

/* ---------- 锚点条 ---------- */
.anchor-bar{position:sticky;top:var(--header-h);z-index:40;background:#fff;border-bottom:1px solid var(--line)}
.anchor-inner{display:flex;gap:10px;overflow-x:auto;padding:14px 0;scrollbar-width:none}
.anchor-inner::-webkit-scrollbar{display:none}
.anchor-chip{padding:8px 16px;border-radius:999px;background:var(--brand-soft);color:var(--brand);font-size:14px;font-weight:600;white-space:nowrap;border:1px solid transparent;transition:.2s ease}
.anchor-chip:hover{background:#DCE7FF}
.anchor-chip.cyan{background:#E6F7F9;color:#177880}
.anchor-chip.cyan:hover{background:#D3F0F3}

/* ---------- 板块 ---------- */
.section{padding:96px 0}
.section--tight{padding:72px 0}
.section--alt{background:#fff;border-top:1px solid var(--line-2);border-bottom:1px solid var(--line-2)}
.sec-head{max-width:760px;margin-bottom:32px}
.sec-head h2{font-size:30px;margin-bottom:12px}
.sec-head p{font-size:15.5px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:700;letter-spacing:1px;color:var(--cyan);text-transform:uppercase;margin-bottom:14px}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);opacity:.6}

/* ---------- 提示条 ---------- */
.notice-strip{display:flex;gap:20px;align-items:flex-start;background:var(--brand-soft);border:1px dashed rgba(42,80,216,.32);border-radius:var(--r-card);padding:26px 28px;margin-bottom:48px}
.notice-strip .ico{flex:none;width:44px;height:44px;border-radius:12px;background:#fff;display:grid;place-items:center;color:var(--brand);box-shadow:var(--sh-sm)}
.notice-strip .ico svg{width:22px;height:22px}
.notice-strip h3{font-size:18px;margin-bottom:6px}
.notice-strip p{font-size:14.5px}

/* ---------- FAQ ---------- */
.faq-group{margin-bottom:52px;scroll-margin-top:150px}
.faq-group:last-of-type{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.faq-group-head h3{font-size:22px}
.faq-group-head .dot{width:9px;height:9px;border-radius:50%;background:var(--cyan);flex:none}
.faq-group-head .count{font-size:13px;color:var(--ink-3);background:#fff;border:1px solid var(--line);border-radius:999px;padding:3px 10px}
.faq-list{border-top:1px solid var(--line);background:var(--card);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-q{width:100%;display:flex;align-items:center;gap:16px;padding:20px 24px;background:none;border:0;text-align:left;font-size:17px;font-weight:600;color:var(--ink);transition:background .2s ease,color .2s ease}
.faq-q:hover{background:#F5F8FF;color:var(--brand)}
.faq-idx{font-size:13px;color:var(--brand);background:var(--brand-soft);width:34px;height:34px;border-radius:10px;display:grid;place-items:center;flex:none;font-weight:700}
.faq-title{flex:1}
.faq-icon{width:20px;height:20px;position:relative;flex:none}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand);border-radius:2px;transition:transform .2s ease}
.faq-icon::before{left:0;right:0;top:9px;height:2px}
.faq-icon::after{top:0;bottom:0;left:9px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0)}
.faq-a{max-height:0;overflow:hidden;transition:max-height .2s ease}
.faq-a-inner{padding:0 24px 24px 74px;color:var(--ink-2);font-size:15.5px;line-height:1.9}
.faq-a-inner ol{margin:10px 0 0;padding-left:20px;color:var(--ink-2)}
.faq-a-inner ol li{margin-bottom:6px}
.faq-a-inner .tip{display:inline-flex;gap:8px;align-items:center;margin-top:12px;font-size:13.5px;color:#177880;background:#E6F7F9;border-radius:999px;padding:5px 12px}

/* ---------- 速查卡 ---------- */
.check-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.check-card{background:var(--card);border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--sh-sm);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .2s ease,transform .2s ease}
.check-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px)}
.check-card:hover h3{color:var(--brand)}
.check-card .thumb{aspect-ratio:16/10;background:var(--line-2);overflow:hidden}
.check-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform .2s ease}
.check-card:hover .thumb img{transform:scale(1.03)}
.check-card .body{padding:24px;display:flex;flex-direction:column;gap:14px;flex:1}
.check-card h3{font-size:19px;transition:color .2s ease}
.check-card .desc{font-size:14.5px;line-height:1.85}
.point-list{list-style:none;padding:0;display:flex;flex-direction:column;gap:8px}
.point-list li{position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2)}
.point-list li::before{content:"";position:absolute;left:2px;top:10px;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
.check-card .foot{margin-top:auto;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.tag{display:inline-flex;align-items:center;gap:6px;border-radius:999px;font-size:13px;padding:4px 10px;background:var(--brand-soft);color:var(--brand)}
.tag-cyan{background:transparent;border:1px solid rgba(43,179,192,.5);color:#177880}
.meta-line{font-size:13px;color:var(--ink-3)}

/* ---------- CTA ---------- */
.cta-band{background:var(--brand-soft);border-radius:20px;padding:52px 48px;text-align:center;box-shadow:var(--sh-sm)}
.cta-band h2{font-size:30px;margin-bottom:14px}
.cta-band p{max-width:660px;margin:0 auto 28px;font-size:15.5px}
.cta-actions{display:flex;justify-content:center;gap:14px;flex-wrap:wrap}
.cta-note{margin-top:20px;font-size:13.5px;color:var(--ink-3)}

/* ---------- 相关分类 ---------- */
.rel-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.rel-card{display:flex;gap:18px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px 24px;box-shadow:var(--sh-sm);transition:box-shadow .2s ease,transform .2s ease}
.rel-card:hover{box-shadow:var(--sh-lg);transform:translateY(-2px)}
.rel-card .rel-ico{width:46px;height:46px;border-radius:12px;background:var(--brand-soft);color:var(--brand);display:grid;place-items:center;flex:none}
.rel-card .rel-ico svg{width:22px;height:22px}
.rel-card h3{font-size:17px;margin-bottom:4px;color:var(--ink)}
.rel-card p{font-size:14px;color:var(--ink-2)}
.rel-card .arrow{margin-left:auto;color:var(--brand);font-size:14px;font-weight:600;white-space:nowrap}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.72);padding-top:64px;margin-top:96px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:40px;padding-bottom:44px}
.site-footer .brand-name{color:#fff}
.site-footer .brand-sub{color:rgba(255,255,255,.5)}
.footer-about{font-size:14px;margin-top:18px;max-width:320px;color:rgba(255,255,255,.62);line-height:1.85}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:18px}
.footer-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:13px}
.footer-col a,.footer-col span{color:rgba(255,255,255,.7);font-size:14px;transition:color .2s ease}
.footer-col a:hover{color:var(--gold)}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding:22px 0;text-align:center;font-size:13px;color:rgba(255,255,255,.5)}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  :root{--header-h:60px}
  .container{padding:0 24px}
  .nav-links{display:none}
  .nav-toggle{display:block}
  .nav-actions{margin-left:auto}
  .section{padding:72px 0}
  .section--tight{padding:60px 0}
  .page-hero{padding:48px 0 44px}
  .page-hero h1{font-size:32px}
  .sec-head h2{font-size:26px}
  .cta-band{padding:40px 28px}
  .cta-band h2{font-size:26px}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px}
  .faq-a-inner{padding-left:24px}
}
@media (max-width:767px){
  body{font-size:16px}
  .container{padding:0 20px}
  .section{padding:48px 0}
  .section--tight{padding:44px 0}
  .brand-name{font-size:14px}
  .brand-sub{display:none}
  .btn-nav-download{display:none}
  .page-hero h1{font-size:27px;line-height:1.4}
  .page-hero .lead{font-size:15.5px}
  .sec-head h2{font-size:23px}
  .check-grid,.rel-grid{grid-template-columns:1fr}
  .faq-q{font-size:15.5px;padding:18px 16px;gap:12px}
  .faq-a-inner{padding:0 16px 20px 16px;font-size:15px}
  .notice-strip{flex-direction:column;padding:22px}
  .cta-band{padding:32px 20px;border-radius:16px}
  .cta-actions{flex-direction:column}
  .cta-actions .btn{width:100%;min-height:44px}
  .footer-grid{grid-template-columns:1fr;gap:28px}
  .rel-card{flex-direction:column;align-items:flex-start}
  .rel-card .arrow{margin-left:0}
}
@media (max-width:520px){
  .page-hero h1{font-size:24px}
  .btn{padding:13px 18px}
}