/* roulang page: index */
:root{
  --brand:#1E4FD8;
  --brand-dark:#163CB0;
  --brand-light:#E8EFFE;
  --teal:#0FB39B;
  --amber:#FF9F1C;
  --bg:#F7F9FC;
  --bg-alt:#F2F6FD;
  --white:#FFFFFF;
  --line:#E5EBF5;
  --text:#16233A;
  --text-2:#5A6B85;
  --text-3:#8C9BB3;
  --dark:#0E1B33;
  --danger:#E5484D;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.05);
  --shadow-card:0 6px 20px -8px rgba(20,45,90,.14);
  --shadow-hover:0 14px 30px -12px rgba(20,45,90,.22);
  --maxw:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --mono:"Inter","SF Mono",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:var(--font);font-size:16px;line-height:1.75;letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font:inherit;color:inherit;}
h1,h2,h3,h4,p,ul,ol,figure{margin:0;padding:0;}
ul,ol{list-style:none;}
h1,h2,h3{line-height:1.3;}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px;}
.section{padding:88px 0;}
.section--alt{background:var(--bg-alt);}
.section--white{background:var(--white);}
.sec-head{margin-bottom:36px;}
.sec-title{
  position:relative;padding-left:16px;font-size:clamp(26px,3vw,32px);
  font-weight:700;letter-spacing:.01em;color:var(--text);
}
.sec-title::before{
  content:"";position:absolute;left:0;top:6px;bottom:6px;width:4px;
  border-radius:2px;background:var(--brand);
}
.sec-sub{margin-top:12px;color:var(--text-2);font-size:16px;max-width:760px;}
.sec-head--row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-btn);border:1px solid transparent;
  font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap;
  transition:transform 180ms ease,background-color 180ms ease,box-shadow 180ms ease,border-color 180ms ease,color 180ms ease;
}
.btn-lg{height:48px;padding:0 26px;font-size:16px;}
.btn-sm{height:36px;padding:0 16px;font-size:14px;}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(30,79,216,.6);}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px -10px rgba(30,79,216,.55);}
.btn-primary:active{transform:translateY(1px);}
.btn-ghost{background:#fff;color:var(--brand);border-color:#C9D8F7;}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-2px);}
.btn-ghost:active{transform:translateY(1px);}
.btn-plain{background:#fff;color:var(--text-2);border-color:var(--line);}
.btn-plain:hover{color:var(--brand);border-color:#C9D8F7;background:var(--bg-alt);}
.btn-amber{background:var(--amber);color:#3A2400;box-shadow:0 6px 16px -8px rgba(255,159,28,.7);}
.btn-amber:hover{transform:translateY(-2px);background:#F1910B;}
.btn:disabled{background:#C8D2E2;color:#fff;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-text{display:inline-flex;align-items:center;gap:6px;color:var(--brand);font-weight:600;font-size:15px;}
.btn-text svg{transition:transform 180ms ease;}
.btn-text:hover svg{transform:translateX(4px);}

/* ===== 徽章 ===== */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:var(--r-pill);font-size:12px;font-weight:600;line-height:1;
}
.badge-brand{background:var(--brand-light);color:var(--brand);}
.badge-safe{background:var(--teal);color:#fff;}
.badge-soft{background:#EEF2F8;color:var(--text-3);}
.badge-amber{background:#FFF3E0;color:#B26A00;}

/* ===== 顶部导航 ===== */
.site-header{
  position:sticky;top:0;z-index:90;background:#fff;
  border-bottom:1px solid transparent;transition:border-color 180ms ease,box-shadow 180ms ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 16px -10px rgba(20,45,90,.28);}
.nav-wrap{display:flex;align-items:center;gap:24px;height:72px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:var(--brand);color:#fff;
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px;
  box-shadow:0 6px 14px -8px rgba(30,79,216,.8);
}
.logo-text{font-size:17px;font-weight:700;color:var(--text);letter-spacing:.01em;}
.logo-text em{font-style:normal;color:var(--brand);}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:8px;}
.nav-item{position:relative;}
.nav-link{
  position:relative;display:inline-flex;align-items:center;gap:6px;height:40px;
  padding:0 14px;border-radius:var(--r-btn);font-size:15px;font-weight:500;color:var(--text-2);
  transition:color 180ms ease,background-color 180ms ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-light);}
.nav-link.is-active{color:var(--brand);font-weight:600;}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  border-radius:2px;background:var(--brand);
}
.nav-link .caret{width:8px;height:8px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg) translateY(-2px);}
.mega-panel{
  position:absolute;left:50%;top:calc(100% + 12px);width:min(920px,92vw);
  transform:translate(-50%,4px);background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-card);padding:26px;
  display:grid;grid-template-columns:1.15fr 1fr 1fr;gap:26px;
  opacity:0;visibility:hidden;transition:opacity 180ms ease,transform 180ms ease,visibility 180ms ease;
}
.nav-item.has-mega:hover .mega-panel,
.nav-item.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translate(-50%,0);}
.mega-col h4{font-size:13px;font-weight:700;color:var(--text-3);letter-spacing:.06em;margin-bottom:14px;}
.mega-list li + li{margin-top:10px;}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:8px 10px;border-radius:10px;font-size:15px;color:var(--text);
  transition:background-color 180ms ease,color 180ms ease;
}
.mega-list a:hover{background:var(--bg-alt);color:var(--brand);}
.mega-list .mega-time{font-size:12px;color:var(--text-3);font-family:var(--mono);}
.mega-entry{
  border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;
  transition:box-shadow 180ms ease,transform 180ms ease;
}
.mega-entry:hover{box-shadow:var(--shadow-card);transform:translateY(-3px);}
.mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF2F8;}
.mega-entry span{display:block;padding:12px 14px;font-size:14px;font-weight:600;color:var(--text);}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:12px;}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;cursor:pointer;
}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;position:relative;}
.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;}

/* ===== 移动抽屉 ===== */
.drawer-mask{
  position:fixed;inset:0;background:rgba(14,27,51,.45);opacity:0;visibility:hidden;
  transition:opacity 200ms ease,visibility 200ms ease;z-index:95;
}
.drawer-mask.is-open{opacity:1;visibility:visible;}
.mobile-drawer{
  position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);background:#fff;z-index:96;
  transform:translateX(100%);transition:transform 240ms ease;padding:20px;
  display:flex;flex-direction:column;gap:6px;overflow-y:auto;
}
.mobile-drawer.is-open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px;}
.drawer-close{
  width:36px;height:36px;border-radius:10px;border:1px solid var(--line);background:#fff;
  cursor:pointer;font-size:18px;line-height:1;color:var(--text-2);
}
.drawer-link{
  padding:13px 12px;border-radius:10px;font-size:16px;font-weight:500;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;
}
.drawer-link:hover,.drawer-link.is-active{background:var(--brand-light);color:var(--brand);}
.drawer-foot{margin-top:auto;padding-top:16px;border-top:1px solid var(--line);}

/* ===== Hero ===== */
.hero{position:relative;overflow:hidden;background:#fff;padding:72px 0 64px;}
.hero-media{position:absolute;inset:0;background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;}
.hero-veil{
  position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 48%,rgba(30,79,216,.06) 100%);
}
.hero-inner{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 260px;gap:48px;align-items:center;}
.hero-eyebrow{
  display:inline-flex;align-items:center;gap:8px;background:var(--white);
  border:1px solid var(--line);border-radius:var(--r-pill);padding:6px 14px 6px 8px;
  font-size:13px;font-weight:600;color:var(--text-2);box-shadow:var(--shadow-sm);margin-bottom:22px;
}
.hero h1{
  font-size:clamp(32px,4.4vw,46px);font-weight:700;line-height:1.24;letter-spacing:.01em;
  color:var(--text);max-width:760px;
}
.hero h1 em{font-style:normal;color:var(--brand);}
.hero-sub{margin-top:20px;font-size:17px;color:var(--text-2);max-width:600px;}
.hero-btns{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
.trust-row{display:flex;flex-wrap:wrap;gap:28px;margin-top:36px;padding-top:26px;border-top:1px solid var(--line);}
.trust-item{min-width:120px;}
.trust-item dt{font-size:12px;color:var(--text-3);letter-spacing:.04em;margin-bottom:4px;}
.trust-item dd{font-size:16px;font-weight:700;color:var(--text);font-family:var(--mono);letter-spacing:0;}
.trust-item dd small{font-weight:500;font-size:13px;color:var(--text-2);font-family:var(--font);}
.qr-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:20px;text-align:center;
}
.qr-box{
  width:120px;height:120px;margin:0 auto;border-radius:12px;background:var(--bg-alt);
  border:1px dashed #C3D2EC;display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:12px;text-align:center;padding:8px;
}
.qr-card p{margin-top:12px;font-size:13px;color:var(--text-2);line-height:1.6;}

/* ===== 功能错位行 ===== */
.feature-row{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;}
.feature-row + .feature-row{margin-top:76px;}
.feature-row.is-rev .feature-media{order:-1;}
.num-badge{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  font-family:var(--mono);margin-bottom:18px;
}
.feature-copy h3{font-size:clamp(18px,2vw,22px);font-weight:600;margin-bottom:12px;}
.feature-copy p{color:var(--text-2);font-size:16px;margin-bottom:10px;}
.feature-copy .btn-text{margin-top:12px;}
.media-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform 180ms ease,box-shadow 180ms ease;
}
.media-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.media-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF2F8;transition:transform .3s ease;}
.media-card:hover img{transform:scale(1.03);}

/* ===== 截图轨道 ===== */
.shot-head{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-bottom:26px;flex-wrap:wrap;}
.shot-nav{display:flex;gap:10px;}
.round-btn{
  width:44px;height:44px;border-radius:50%;border:1px solid var(--line);background:#fff;
  color:var(--text-2);cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all 180ms ease;
}
.round-btn:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-card);}
.round-btn:active{transform:translateY(0);}
.shot-track{
  display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:4px 4px 20px;scrollbar-width:thin;scrollbar-color:#C8D2E2 transparent;
}
.shot-track::-webkit-scrollbar{height:6px;}
.shot-track::-webkit-scrollbar-thumb{background:#C8D2E2;border-radius:6px;}
.shot-card{
  flex:0 0 calc((100% - 48px)/3);scroll-snap-align:start;background:#fff;
  border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;
  box-shadow:var(--shadow-card);transition:transform 180ms ease,box-shadow 180ms ease;
}
.shot-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.shot-card img{width:100%;aspect-ratio:16/10;object-fit:cover;background:#EEF2F8;}
.shot-card figcaption{
  padding:14px 16px;font-size:15px;font-weight:600;color:var(--text);
  display:flex;align-items:center;justify-content:space-between;gap:10px;
}
.dots{display:flex;gap:8px;justify-content:center;margin-top:6px;}
.dots i{width:8px;height:8px;border-radius:50%;background:#C8D2E2;display:block;}
.dots i.on{background:var(--brand);width:22px;border-radius:4px;}

/* ===== 系统要求 ===== */
.req-wrap{display:grid;grid-template-columns:minmax(0,1fr) 220px;gap:32px;align-items:start;}
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.req-card{
  display:flex;align-items:center;gap:16px;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-card);padding:18px 20px;box-shadow:var(--shadow-sm);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.req-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card);border-color:#C9D8F7;}
.req-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;flex-shrink:0;font-weight:700;font-size:13px;
  font-family:var(--mono);
}
.req-card h3{font-size:16px;font-weight:600;margin-bottom:2px;}
.req-card p{font-size:14px;color:var(--text-2);font-family:var(--mono);}
.req-side{
  background:var(--white);border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.req-side p{font-size:14px;color:var(--text-2);margin-bottom:16px;}

/* ===== 评价墙 ===== */
.review-wall{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.review-wall > :nth-child(even){transform:translateY(26px);}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:22px;
  box-shadow:var(--shadow-card);transition:transform 180ms ease,box-shadow 180ms ease;
}
.review-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;
}
.review-name{font-size:15px;font-weight:600;}
.review-tag{font-size:12px;color:var(--text-3);}
.stars{color:var(--amber);font-size:14px;letter-spacing:2px;}
.review-card p{color:var(--text-2);font-size:15px;}
.review-time{margin-top:14px;font-size:13px;color:var(--text-3);font-family:var(--mono);text-align:right;}

/* ===== 下载区 ===== */
.download-box{
  background:var(--brand-light);border-radius:20px;padding:48px;
  display:grid;grid-template-columns:minmax(0,1fr) auto;gap:36px;align-items:center;
}
.download-box h2{font-size:clamp(24px,2.6vw,30px);font-weight:700;margin-bottom:12px;}
.download-box p{color:var(--text-2);max-width:520px;}
.dl-btns{display:flex;flex-wrap:wrap;gap:14px;justify-content:flex-end;}
.dl-note{margin-top:16px;font-size:13px;color:var(--text-3);font-family:var(--mono);}

/* ===== 资讯列表 ===== */
.news-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:24px;}
.news-card{
  display:flex;gap:16px;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:14px;box-shadow:var(--shadow-sm);
  transition:transform 180ms ease,box-shadow 180ms ease,border-color 180ms ease;
}
.news-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#C9D8F7;}
.news-thumb{flex:0 0 132px;border-radius:12px;overflow:hidden;background:#EEF2F8;}
.news-thumb img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease;}
.news-card:hover .news-thumb img{transform:scale(1.03);}
.news-body{flex:1;min-width:0;display:flex;flex-direction:column;}
.news-title{font-size:16px;font-weight:600;line-height:1.5;margin-bottom:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-card:hover .news-title{color:var(--brand);}
.news-desc{font-size:14px;color:var(--text-2);line-height:1.6;margin-bottom:12px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
.news-meta{margin-top:auto;display:flex;align-items:center;gap:10px;}
.news-meta .meta-time{font-size:12px;color:var(--text-3);font-family:var(--mono);}
.news-arrow{margin-left:auto;color:var(--brand);font-weight:700;transition:transform 180ms ease;}
.news-card:hover .news-arrow{transform:translateX(4px);}
.empty-state{
  grid-column:1/-1;text-align:center;padding:56px 20px;background:#fff;border:1px dashed var(--line);
  border-radius:var(--r-card);
}
.empty-state svg{margin:0 auto 14px;color:var(--text-3);}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:18px;}

/* ===== FAQ ===== */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm);}
.faq-item + .faq-item{border-top:1px solid var(--line);}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:48px;padding:16px 22px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  font-size:16px;font-weight:500;color:var(--text);transition:color 180ms ease,background-color 180ms ease;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary:hover{background:var(--bg-alt);color:var(--brand);}
.faq-icon{
  position:relative;width:16px;height:16px;flex-shrink:0;transition:transform 200ms ease;
}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item[open] .faq-icon{transform:rotate(45deg);}
.faq-item[open] summary{font-weight:600;color:var(--brand);}
.faq-answer{
  padding:0 22px 20px 22px;margin-left:22px;border-left:3px solid var(--brand);
  color:var(--text-2);font-size:15px;
}

/* ===== CTA 条 ===== */
.cta-bar{
  background:var(--dark);border-radius:20px;padding:42px 48px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-bar h2{font-size:clamp(22px,2.4vw,28px);font-weight:700;margin-bottom:8px;}
.cta-bar p{color:rgba(255,255,255,.72);font-size:15px;max-width:560px;}
.cta-bar .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.4);}
.cta-bar .btn-ghost:hover{background:rgba(255,255,255,.12);}

/* ===== 页脚 ===== */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:88px;}
.footer-main{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding:64px 0 48px;}
.footer-brand .logo-text{color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.62);max-width:300px;}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.92);margin-bottom:16px;}
.footer-col li + li{margin-top:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.68);transition:color 180ms ease;}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:22px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.55);
}
.footer-bottom .mono{font-family:var(--mono);}

/* ===== 移动底条 ===== */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;height:60px;background:#fff;
  box-shadow:0 -6px 20px -8px rgba(20,45,90,.2);align-items:center;gap:14px;padding:0 16px;
  transform:translateY(100%);transition:transform 240ms ease;z-index:80;
}
.mobile-bar.is-show{transform:translateY(0);}
.mobile-bar .mb-text{font-size:12px;color:var(--text-3);font-family:var(--mono);line-height:1.3;}
.mobile-bar .btn{flex-shrink:0;}

/* ===== 响应式 ===== */
@media (max-width:1280px){
  .shot-card{flex:0 0 calc((100% - 24px)/2.2);}
}
@media (max-width:1024px){
  .main-nav{display:none;}
  .nav-toggle{display:flex;}
  .section{padding:64px 0;}
  .hero{padding:56px 0 52px;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .qr-card{max-width:280px;}
  .feature-row{gap:36px;}
  .download-box{grid-template-columns:1fr;padding:36px;}
  .dl-btns{justify-content:flex-start;}
  .req-wrap{grid-template-columns:1fr;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;padding:52px 0 36px;}
}
@media (max-width:768px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  .hero{padding:44px 0 40px;}
  .hero h1{font-size:30px;}
  .hero-sub{font-size:16px;}
  .feature-row{grid-template-columns:1fr;gap:24px;}
  .feature-row.is-rev .feature-media{order:0;}
  .feature-row + .feature-row{margin-top:52px;}
  .shot-card{flex:0 0 82%;}
  .req-grid{grid-template-columns:1fr;}
  .review-wall{grid-template-columns:1fr;}
  .review-wall > :nth-child(even){transform:none;}
  .news-grid{grid-template-columns:1fr;}
  .cta-bar{padding:32px 24px;}
  .footer-main{grid-template-columns:1fr;}
  .mobile-bar{display:flex;}
  .site-footer{margin-top:64px;padding-bottom:60px;}
}
@media (max-width:480px){
  .trust-row{gap:18px;}
  .trust-item{min-width:calc(50% - 9px);}
  .btn-lg{height:44px;padding:0 20px;font-size:15px;}
  .news-card{flex-direction:column;}
  .news-thumb{flex:none;}
  .news-thumb img{aspect-ratio:16/10;}
}

/* roulang page: article */
:root{
  --primary:#1E4FD8;
  --primary-600:#163CB0;
  --primary-50:#E8EFFE;
  --accent:#0FB39B;
  --amber:#FF9F1C;
  --bg:#F7F9FC;
  --surface:#FFFFFF;
  --surface-2:#F2F6FD;
  --line:#E5EBF5;
  --text:#16233A;
  --text-2:#5A6B85;
  --text-3:#8C9BB3;
  --dark:#0E1B33;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.05);
  --shadow-card:0 6px 20px -8px rgba(20,45,90,.14);
  --shadow-hover:0 14px 30px -12px rgba(20,45,90,.22);
  --container:1200px;
  --font:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --mono:ui-monospace,Menlo,Consolas,"Courier New",monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit;color:inherit}
button{cursor:pointer;border:0;background:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{margin:0;line-height:1.35;font-weight:700}
p{margin:0}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ---------- 顶部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:60;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow .18s ease,border-color .18s ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:var(--shadow-sm)}
.nav-wrap{display:flex;align-items:center;gap:26px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:9px;flex-shrink:0;
  background:linear-gradient(135deg,var(--primary),#4A74EA);
  color:#fff;display:grid;place-items:center;font-size:17px;font-weight:700;
  box-shadow:0 6px 14px -8px rgba(30,79,216,.8);
}
.logo-text{font-size:17px;font-weight:700;white-space:nowrap;letter-spacing:.01em}
.logo-text em{font-style:normal;color:var(--primary);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:auto}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;height:40px;padding:0 14px;
  border-radius:10px;font-size:15px;color:var(--text-2);
  transition:color .18s ease,background .18s ease;
}
.nav-link:hover{color:var(--primary);background:var(--primary-50)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:6px;height:2px;
  background:var(--primary);border-radius:2px;
}
.caret{
  width:6px;height:6px;border-right:1.5px solid currentColor;border-bottom:1.5px solid currentColor;
  transform:rotate(45deg) translateY(-2px);margin-left:2px;
}
.mega-panel{
  position:absolute;top:calc(100% + 8px);right:0;width:min(920px,92vw);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-card);padding:22px;
  display:grid;grid-template-columns:1fr 1fr 1.1fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(4px);
  transition:opacity .18s ease,transform .18s ease,visibility .18s ease;
}
.has-mega:hover .mega-panel,
.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.has-mega:hover .nav-link{color:var(--primary);background:var(--primary-50)}
.mega-col h4{font-size:13px;color:var(--text-3);font-weight:600;margin-bottom:12px;letter-spacing:.04em}
.mega-list li{margin-bottom:4px}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:8px 10px;border-radius:10px;font-size:14px;color:var(--text-2);
  transition:background .18s ease,color .18s ease;
}
.mega-list a:hover{background:var(--surface-2);color:var(--primary)}
.mega-time{font-size:12px;color:var(--text-3)}
.mega-entry{
  display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;
  background:var(--surface-2);transition:transform .18s ease,box-shadow .18s ease;
}
.mega-entry img{aspect-ratio:16/10;width:100%;object-fit:cover}
.mega-entry span{display:block;padding:10px 12px;font-size:14px;font-weight:600;color:var(--text)}
.mega-entry:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.nav-actions{display:flex;align-items:center;gap:12px;flex-shrink:0}
.nav-toggle{
  display:none;width:42px;height:42px;border-radius:10px;border:1px solid var(--line);
  background:#fff;align-items:center;justify-content:center;
}
.nav-toggle span{position:relative;width:18px;height:2px;background:var(--text);border-radius:2px;display:block}
.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}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;white-space:nowrap;
  transition:transform .18s ease,background .18s ease,color .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 8px 18px -10px rgba(30,79,216,.85)}
.btn-primary:hover{background:var(--primary-600);transform:translateY(-2px)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--primary);border-color:#C7D5F6}
.btn-outline:hover{border-color:var(--primary);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn-ghost{background:transparent;color:var(--primary);padding:0 4px;height:auto}
.btn-ghost .arrow{transition:transform .18s ease}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{background:#C8D2E2;color:#fff;box-shadow:none;transform:none;cursor:not-allowed}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;
  border-radius:999px;font-size:12px;font-weight:600;line-height:1;
}
.badge-cat{background:var(--primary-50);color:var(--primary)}
.badge-ok{background:var(--accent);color:#fff}
.badge-muted{background:#EEF2F8;color:var(--text-3)}
.badge-amber{background:#FFF3E0;color:#B96B00}

/* ---------- 面包屑 ---------- */
.crumb{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:22px 0 0;font-size:14px;color:var(--text-3);
}
.crumb a{color:var(--text-2);transition:color .18s ease}
.crumb a:hover{color:var(--primary)}
.crumb .sep{color:#C3CDDC}
.crumb .current{color:var(--text-3);max-width:56ch;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}

/* ---------- 文章布局 ---------- */
.article-shell{
  max-width:var(--container);margin:0 auto;padding:20px 20px 88px;
  display:grid;grid-template-columns:minmax(0,1fr) 240px;gap:40px;align-items:start;
}
.article-main{min-width:0;max-width:860px}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  padding:32px;box-shadow:var(--shadow-card);
}
.post-title{font-size:clamp(26px,3.4vw,36px);line-height:1.3;letter-spacing:-.01em}
.post-meta{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:16px;font-size:14px;color:var(--text-2)}
.meta-dot{width:4px;height:4px;border-radius:50%;background:#C3CDDC}
.post-cover{margin:26px 0 4px}
.post-cover img{width:100%;aspect-ratio:21/9;object-fit:cover;border-radius:16px;background:#EEF2F8}
.post-cover figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:10px}
.lead-note{
  margin-top:24px;padding:16px 18px;background:var(--primary-50);border-radius:0 12px 12px 0;
  border-left:4px solid var(--primary);color:#2A3A57;font-size:15px;
}

/* ---------- 正文排版 ---------- */
.article-body{margin-top:28px;font-size:16px;line-height:1.85;color:#26344D}
.article-body>h2{
  font-size:clamp(21px,2.4vw,25px);margin:38px 0 14px;color:var(--text);
  padding-left:12px;border-left:4px solid var(--primary);
}
.article-body>h3{font-size:19px;margin:26px 0 10px;font-weight:600}
.article-body h4{font-size:17px;margin:22px 0 8px;font-weight:600}
.article-body p{margin:0 0 16px}
.article-body ul,.article-body ol{margin:0 0 18px;padding:0}
.article-body ul li{position:relative;padding-left:20px;margin-bottom:9px}
.article-body ul li::before{
  content:"";position:absolute;left:2px;top:11px;width:6px;height:6px;
  border-radius:50%;background:var(--primary);
}
.article-body ol{counter-reset:li}
.article-body ol li{position:relative;padding-left:26px;margin-bottom:9px;counter-increment:li}
.article-body ol li::before{
  content:counter(li);position:absolute;left:0;top:4px;width:18px;height:18px;border-radius:6px;
  background:var(--primary-50);color:var(--primary);font-size:12px;font-weight:700;
  display:grid;place-items:center;
}
.article-body blockquote{
  margin:22px 0;padding:14px 18px;background:var(--primary-50);
  border-left:4px solid var(--primary);border-radius:0 12px 12px 0;color:#2A3A57;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;margin:18px auto;width:100%}
.article-body figure{margin:20px 0}
.article-body figcaption{font-size:13px;color:var(--text-3);text-align:center;margin-top:8px}
.article-body a{color:var(--primary);border-bottom:1px solid rgba(30,79,216,.35);transition:border-color .18s ease}
.article-body a:hover{border-bottom-color:var(--primary)}
.article-body code{
  background:#F1F4F9;border-radius:6px;padding:2px 6px;
  font-family:var(--mono);font-size:14px;color:#25406B;
}
.article-body pre{background:#F1F4F9;padding:16px;border-radius:12px;overflow:auto;margin:18px 0}
.article-body pre code{background:none;padding:0}
.article-body table{width:100%;border-collapse:collapse;margin:18px 0;font-size:15px}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.article-body th{background:var(--surface-2);font-weight:600}
.article-body hr{border:0;border-top:1px solid var(--line);margin:30px 0}

/* ---------- 空态 ---------- */
.empty-state{
  text-align:center;padding:56px 20px;border:1px dashed #D5DEEE;border-radius:16px;
  background:var(--surface-2);margin-top:28px;
}
.empty-icon{
  width:48px;height:48px;margin:0 auto 16px;border-radius:14px;
  background:var(--primary-50);display:grid;place-items:center;color:var(--primary);
}
.empty-icon svg{width:24px;height:24px}
.empty-state p{font-size:14px;color:var(--text-2);margin-bottom:18px}
.empty-state strong{display:block;font-size:17px;color:var(--text);margin-bottom:8px}

/* ---------- 侧栏 ---------- */
.article-aside{display:flex;flex-direction:column;gap:20px;position:sticky;top:96px}
.aside-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:18px;box-shadow:var(--shadow-card);
}
.aside-card h2{font-size:15px;font-weight:700;margin-bottom:12px}
.aside-nav li{margin-bottom:2px}
.aside-nav a{
  display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:10px;
  font-size:14px;color:var(--text-2);transition:background .18s ease,color .18s ease;
}
.aside-nav a::before{
  content:"";width:5px;height:5px;border-radius:50%;background:#C3CDDC;flex-shrink:0;
  transition:background .18s ease;
}
.aside-nav a:hover{background:var(--surface-2);color:var(--primary)}
.aside-nav a:hover::before{background:var(--primary)}
.aside-links li{margin-bottom:8px}
.aside-links a{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  font-size:14px;color:var(--text-2);padding:6px 0;transition:color .18s ease;
}
.aside-links a:hover{color:var(--primary)}
.aside-download{
  background:linear-gradient(180deg,#F4F8FF,#E8EFFE);
  border:1px solid #D9E4FB;border-radius:var(--radius-card);padding:20px;
  box-shadow:var(--shadow-sm);
}
.aside-download h2{font-size:16px;margin-bottom:8px}
.aside-download p{font-size:13px;color:var(--text-2);margin-bottom:14px}
.aside-download .btn{width:100%}
.aside-tip{margin-top:10px;font-size:12px;color:var(--text-3);text-align:center}

/* ---------- 板块标题 ---------- */
.section-head{margin-bottom:20px}
.section-head h2{font-size:clamp(20px,2.4vw,26px);position:relative;padding-left:14px}
.section-head h2::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:4px;height:20px;border-radius:2px;background:var(--primary);
}
.section-head p{margin-top:8px;font-size:14px;color:var(--text-2)}

.article-block{margin-top:52px}

/* ---------- 相关推荐 ---------- */
.related-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.card{
  display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-card);
  transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease;
}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5E0F7}
.card-thumb{overflow:hidden;background:#EEF2F8}
.card-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .3s ease}
.card:hover .card-thumb img{transform:scale(1.03)}
.card-body{padding:16px 18px 18px}
.card-body h3{font-size:16px;line-height:1.5;margin-bottom:8px;transition:color .18s ease}
.card:hover .card-body h3{color:var(--primary)}
.card-body p{font-size:14px;color:var(--text-2);margin-bottom:12px}
.card-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;color:var(--text-3)}

/* ---------- 翻页 ---------- */
.pager{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:52px}
.pager a{
  display:block;background:#fff;border:1px solid var(--line);border-radius:14px;
  padding:16px 18px;box-shadow:var(--shadow-sm);
  transition:transform .18s ease,border-color .18s ease,box-shadow .18s ease;
}
.pager a:hover{transform:translateY(-3px);border-color:#CBD9F6;box-shadow:var(--shadow-hover)}
.pager .pager-label{font-size:12px;color:var(--text-3);display:block;margin-bottom:6px}
.pager .pager-title{font-size:15px;font-weight:600;color:var(--text)}
.pager .is-next{text-align:right}
.back-row{margin-top:24px;text-align:center}

/* ---------- FAQ ---------- */
.faq-list{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  overflow:hidden;box-shadow:var(--shadow-card);
}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:14px;
  min-height:56px;padding:14px 22px;font-size:16px;font-weight:500;cursor:pointer;
  list-style:none;transition:color .18s ease,background .18s ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--surface-2);color:var(--primary)}
.faq-item[open] summary{color:var(--primary);font-weight:600}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;color:var(--primary)}
.faq-icon::before,.faq-icon::after{
  content:"";position:absolute;background:currentColor;border-radius:2px;transition:transform .2s ease,opacity .2s ease;
}
.faq-icon::before{left:0;top:7px;width:16px;height:2px}
.faq-icon::after{left:7px;top:0;width:2px;height:16px}
.faq-item[open] .faq-icon::after{transform:rotate(90deg);opacity:0}
.faq-answer{padding:0 22px 20px;font-size:15px;color:var(--text-2);border-left:3px solid var(--primary);margin:0 22px 18px;padding-left:14px}

/* ---------- CTA ---------- */
.cta-band{
  margin-top:64px;background:var(--dark);border-radius:20px;padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;color:#fff;
  box-shadow:0 24px 50px -28px rgba(14,27,51,.6);
}
.cta-band h2{font-size:clamp(20px,2.4vw,26px);color:#fff}
.cta-band p{margin-top:8px;font-size:14px;color:rgba(255,255,255,.7);max-width:52ch}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap;flex-shrink:0}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.cta-band .btn-outline:hover{border-color:#fff;background:rgba(255,255,255,.08)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:56px 0 0;margin-top:88px}
.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand .logo-text{color:#fff;font-size:18px}
.footer-brand .logo-text em{color:#8FB2FF}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);margin-top:14px;max-width:340px}
.footer-col h4{font-size:14px;color:rgba(255,255,255,.55);font-weight:600;margin-bottom:14px}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color .18s ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:18px 0;
  display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.mono{font-family:var(--mono)}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .article-shell{grid-template-columns:minmax(0,1fr) 220px;gap:32px}
}
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(320px,86vw);margin:0;
    background:#fff;flex-direction:column;align-items:stretch;gap:4px;
    padding:84px 20px 24px;overflow-y:auto;z-index:70;
    transform:translateX(105%);transition:transform .24s ease;
    box-shadow:-18px 0 40px -22px rgba(14,27,51,.45);
  }
  body.nav-open .main-nav{transform:translateX(0)}
  body.nav-open::after{
    content:"";position:fixed;inset:0;background:rgba(14,27,51,.45);z-index:65;
  }
  .nav-link{height:46px;width:100%;justify-content:flex-start;font-size:16px}
  .nav-link.is-active::after{display:none}
  .mega-panel{display:none}
  .article-shell{grid-template-columns:1fr;gap:24px;padding:16px 20px 64px}
  .article-aside{position:static;order:-1;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
  .article-aside .aside-download{grid-column:span 2}
  .related-grid{grid-template-columns:repeat(2,1fr)}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .nav-wrap{height:64px;gap:14px}
  .logo-text{font-size:16px}
  .nav-actions .btn{display:none}
  .article-shell{padding:12px 16px 48px;gap:20px}
  .post-card{padding:20px;border-radius:16px}
  .article-aside{grid-template-columns:1fr}
  .article-aside .aside-download{grid-column:span 1}
  .post-cover img{aspect-ratio:16/9}
  .related-grid{grid-template-columns:1fr}
  .pager{grid-template-columns:1fr}
  .pager .is-next{text-align:left}
  .cta-band{flex-direction:column;align-items:flex-start;padding:26px 22px;border-radius:16px;margin-top:48px}
  .article-block{margin-top:40px}
  .faq-item summary{padding:14px 16px;font-size:15px}
  .faq-answer{margin:0 16px 16px;padding-left:12px}
  .footer-main{grid-template-columns:1fr;gap:24px}
  .site-footer{margin-top:56px;padding-top:44px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:520px){
  body{font-size:15px}
  .post-title{font-size:24px}
  .crumb .current{max-width:30ch}
  .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
}

/* roulang page: category1 */
:root{
  --brand:#1E4FD8;
  --brand-dark:#163CB0;
  --brand-light:#E8EFFE;
  --teal:#0FB39B;
  --amber:#FF9F1C;
  --bg:#F7F9FC;
  --bg-alt:#F2F6FD;
  --line:#E5EBF5;
  --ink:#16233A;
  --ink-2:#5A6B85;
  --ink-3:#8C9BB3;
  --dark:#0E1B33;
  --white:#FFFFFF;
  --r-card:16px;
  --r-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.05);
  --shadow-card:0 6px 20px -8px rgba(20,45,90,.14);
  --shadow-hover:0 14px 30px -12px rgba(20,45,90,.22);
  --dur:180ms;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;line-height:1.75;letter-spacing:.01em;
  color:var(--ink);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1,h2,h3,h4{line-height:1.35;font-weight:700;letter-spacing:.005em}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
.mono{font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace}

.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:80px 0}
.section.alt{background:var(--bg-alt)}
.section-title{position:relative;padding-left:16px;font-size:clamp(24px,2.6vw,32px);margin-bottom:12px}
.section-title::before{content:"";position:absolute;left:0;top:.3em;width:4px;height:20px;border-radius:2px;background:var(--brand)}
.section-sub{color:var(--ink-2);font-size:15px;max-width:720px;margin-bottom:32px}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;margin-bottom:32px}
.section-head .section-title,.section-head .section-sub{margin-bottom:0}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--r-btn);
  font-size:15px;font-weight:600;border:1px solid transparent;cursor:pointer;
  transition:all var(--dur) ease;white-space:nowrap;
}
.btn svg{flex:0 0 auto}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(30,79,216,.7)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 24px -10px rgba(22,60,176,.55)}
.btn-primary:active{transform:translateY(1px);box-shadow:none}
.btn-outline{background:#fff;color:var(--brand);border-color:#C9D8F8}
.btn-outline:hover{background:var(--brand-light);border-color:var(--brand);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{height:auto;padding:0;background:transparent;color:var(--brand);border:0}
.btn-ghost .arrow{transition:transform var(--dur) ease}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-gray{background:var(--bg-alt);color:var(--ink-2);border-color:var(--line)}
.btn-gray:hover{background:#E7EDF8;color:var(--ink)}
.btn[disabled],.btn.is-disabled{background:#C8D2E2;color:#fff;cursor:not-allowed;box-shadow:none;transform:none;border-color:transparent}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;padding:3px 12px;border-radius:999px;font-size:12px;font-weight:600;line-height:1.7}
.badge-brand{background:var(--brand-light);color:var(--brand)}
.badge-teal{background:var(--teal);color:#fff}
.badge-gray{background:#EEF2F8;color:var(--ink-3)}
.badge-amber{background:#FFF3E0;color:#B96C00}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:70;background:#fff;
  border-bottom:1px solid transparent;transition:border-color var(--dur) ease,box-shadow var(--dur) ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 18px -12px rgba(20,45,90,.35)}
.nav-wrap{display:flex;align-items:center;height:72px;gap:20px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--brand),#3E6EE8);
  color:#fff;font-weight:700;font-size:17px;display:flex;align-items:center;justify-content:center;
}
.logo-text{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:0}
.logo-text em{font-style:normal;color:var(--brand)}
.main-nav{display:flex;align-items:center;gap:2px;margin-left:26px}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;padding:10px 14px;border-radius:10px;
  font-size:15px;color:var(--ink-2);transition:color var(--dur) ease,background var(--dur) ease;
}
.nav-link:hover{color:var(--brand);background:var(--brand-light)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.nav-link.is-active::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;border-radius:2px;background:var(--brand);
}
.caret{width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-1px);transition:transform var(--dur) ease}
.has-mega:hover .caret{transform:rotate(225deg) translateY(-2px)}
.nav-actions{display:flex;align-items:center;gap:12px;margin-left:auto}
.nav-toggle{
  display:none;width:40px;height:40px;border:1px solid var(--line);background:#fff;border-radius:10px;
  cursor:pointer;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:50%;top:50%;width:16px;height:2px;background:var(--ink);border-radius:2px;transform:translate(-50%,-50%);transition:var(--dur) ease;
}
.nav-toggle span::before{content:"";transform:translate(-50%,-6px);top:0;left:0}
.nav-toggle span::after{content:"";transform:translate(-50%,6px);top:0;left:0}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translate(-50%,0) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translate(-50%,0) rotate(-45deg)}

/* 大面板 */
.mega-panel{
  position:absolute;top:calc(100% + 12px);left:50%;
  transform:translateX(-50%) translateY(-6px);
  width:min(920px,92vw);background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-card);padding:24px;
  display:grid;grid-template-columns:1.1fr 1.1fr .9fr;gap:24px;
  opacity:0;visibility:hidden;transition:opacity var(--dur) ease,transform var(--dur) ease,visibility var(--dur) ease;
}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.mega-col h4{font-size:13px;font-weight:600;color:var(--ink-3);margin-bottom:12px;letter-spacing:.04em}
.mega-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 12px;border-radius:10px;font-size:14px;color:var(--ink-2);transition:var(--dur) ease;
}
.mega-list li a:hover{background:var(--bg-alt);color:var(--brand)}
.mega-time{font-size:12px;color:var(--ink-3)}
.mega-entry{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--bg-alt)}
.mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform var(--dur) ease}
.mega-entry:hover img{transform:scale(1.03)}
.mega-entry span{display:block;padding:10px 12px;font-size:13px;font-weight:600;color:var(--brand)}

/* ---------- 页面头部 ---------- */
.page-head{
  position:relative;padding:44px 0 52px;
  background:linear-gradient(100deg,rgba(247,249,252,.97) 0%,rgba(247,249,252,.88) 52%,rgba(232,239,254,.72) 100%),
             url("/assets/images/backpic/back-1.webp") center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--ink-3);margin-bottom:18px;flex-wrap:wrap}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:#C3CDDE}
.breadcrumb .current{color:var(--ink-3)}
.page-head h1{font-size:clamp(28px,4vw,44px);max-width:820px;margin-bottom:16px}
.page-lead{max-width:680px;color:var(--ink-2);font-size:16px}
.head-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}
.anchor-nav{display:flex;gap:8px;flex-wrap:wrap;margin-top:28px}
.anchor-nav a{
  padding:7px 15px;border-radius:999px;background:#fff;border:1px solid var(--line);
  font-size:14px;color:var(--ink-2);transition:var(--dur) ease;
}
.anchor-nav a:hover{border-color:var(--brand);color:var(--brand);transform:translateY(-2px);box-shadow:var(--shadow-sm)}

/* ---------- 两栏布局 ---------- */
.layout{display:grid;grid-template-columns:minmax(0,2fr) minmax(0,1fr);gap:32px;align-items:start}

/* 图文条目 */
.media-list{display:flex;flex-direction:column;gap:20px}
.media-item{
  display:grid;grid-template-columns:200px minmax(0,1fr);gap:20px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:18px;box-shadow:var(--shadow-sm);
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.media-item:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D8E3F8}
.media-thumb{position:relative;border-radius:12px;overflow:hidden;background:#EEF2F8}
.media-thumb img{width:100%;height:120px;object-fit:cover;transition:transform var(--dur) ease}
.media-item:hover .media-thumb img{transform:scale(1.03)}
.media-num{
  position:absolute;top:8px;left:8px;background:rgba(14,27,51,.72);color:#fff;
  font-size:12px;font-weight:600;padding:2px 9px;border-radius:999px;
}
.media-body h3{font-size:19px;margin-bottom:8px;transition:color var(--dur) ease}
.media-item:hover .media-body h3{color:var(--brand)}
.media-body p{font-size:14px;color:var(--ink-2);margin-bottom:12px}
.tag-row{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.tag-row .more{margin-left:auto;font-size:14px;color:var(--brand);font-weight:600}
.tag-row .more:hover{text-decoration:underline}

/* 侧栏 */
.side{position:sticky;top:96px;display:flex;flex-direction:column;gap:20px}
.side-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:17px;margin-bottom:6px}
.side-card .hint{font-size:13px;color:var(--ink-3);margin-bottom:14px}
.link-list li a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:10px 12px;border-radius:10px;font-size:14px;color:var(--ink-2);transition:var(--dur) ease;
}
.link-list li a:hover{background:var(--bg-alt);color:var(--brand)}
.link-list li a span:last-child{color:var(--ink-3);font-size:12px}
.side-card.download{background:linear-gradient(160deg,#F5F8FF,#EEF4FF);border-color:#DCE6FA}
.side-card.download .btn{width:100%}
.side-card.download .btn+.btn{margin-top:10px}
.meta-line{font-size:13px;color:var(--ink-3);margin-top:12px;line-height:1.7}

/* ---------- 场景卡 ---------- */
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
.feat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);padding:26px;
  box-shadow:var(--shadow-sm);transition:transform var(--dur) ease,box-shadow var(--dur) ease;
}
.feat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.feat-icon{
  width:44px;height:44px;border-radius:12px;background:var(--brand-light);color:var(--brand);
  display:flex;align-items:center;justify-content:center;margin-bottom:16px;
}
.feat-card h3{font-size:19px;margin-bottom:8px}
.feat-card p{font-size:14px;color:var(--ink-2)}
.feat-card ul{margin-top:14px;display:flex;flex-direction:column;gap:8px}
.feat-card ul li{position:relative;padding-left:18px;font-size:14px;color:var(--ink-2)}
.feat-card ul li::before{
  content:"";position:absolute;left:2px;top:.72em;width:6px;height:6px;border-radius:50%;background:var(--brand);
}

/* ---------- 步骤 ---------- */
.steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}
.step{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px 22px;box-shadow:var(--shadow-sm);transition:transform var(--dur) ease,box-shadow var(--dur) ease;
}
.step:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-num{
  width:34px;height:34px;border-radius:50%;border:2px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;margin-bottom:16px;
  background:#fff;
}
.step.is-current .step-num{background:var(--brand);color:#fff}
.step h3{font-size:17px;margin-bottom:8px}
.step p{font-size:14px;color:var(--ink-2)}
.step::after{
  content:"";position:absolute;top:43px;right:-14px;width:10px;height:10px;
  border-top:2px solid #C9D8F8;border-right:2px solid #C9D8F8;transform:rotate(45deg);
}
.step:last-child::after{display:none}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-item+.faq-item{border-top:1px solid var(--line)}
.faq-item summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:56px;padding:14px 22px;cursor:pointer;font-size:16px;font-weight:500;
  list-style:none;transition:color var(--dur) ease,background var(--dur) ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{background:var(--bg-alt);color:var(--brand)}
.faq-plus{position:relative;flex:0 0 auto;width:18px;height:18px}
.faq-plus::before,.faq-plus::after{
  content:"";position:absolute;left:50%;top:50%;background:var(--brand);border-radius:2px;
  transform:translate(-50%,-50%);transition:transform var(--dur) ease;
}
.faq-plus::before{width:14px;height:2px}
.faq-plus::after{width:2px;height:14px}
.faq-item[open] summary{color:var(--brand);font-weight:600}
.faq-item[open] .faq-plus::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0}
.faq-answer{padding:0 22px 20px 22px;margin-left:22px;border-left:3px solid var(--brand);font-size:15px;color:var(--ink-2);padding-left:16px}

/* ---------- CTA ---------- */
.cta-band{
  background:radial-gradient(120% 160% at 100% 0%,rgba(30,79,216,.42) 0%,rgba(14,27,51,0) 58%),var(--dark);
  border-radius:20px;padding:44px;color:#fff;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(22px,2.4vw,30px);color:#fff;margin-bottom:10px}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;max-width:520px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.45)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0;padding-top:56px}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:32px;padding-bottom:40px}
.footer-brand .logo-text{color:#fff;font-size:16px}
.footer-brand .logo-text em{color:#8FB0FF}
.footer-brand p{font-size:14px;color:rgba(255,255,255,.62);margin-top:14px;max-width:340px}
.footer-col h4{font-size:14px;color:rgba(255,255,255,.5);font-weight:600;margin-bottom:16px;letter-spacing:.04em}
.footer-col ul{display:flex;flex-direction:column;gap:12px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--dur) ease}
.footer-col ul li a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding:20px 0;
  display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}

/* ---------- 移动端底条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:65;display:none;
  align-items:center;justify-content:space-between;gap:14px;
  padding:10px 16px;background:#fff;box-shadow:0 -6px 20px -8px rgba(20,45,90,.28);
  transform:translateY(110%);transition:transform 260ms ease;
}
.mobile-bar.is-visible{transform:translateY(0)}
.mobile-bar .meta{font-size:12px;color:var(--ink-3);line-height:1.5}

/* ---------- 响应式 ---------- */
@media (max-width:1024px){
  .section{padding:64px 0}
  .layout{grid-template-columns:minmax(0,1fr)}
  .side{position:static;flex-direction:row;flex-wrap:wrap}
  .side-card{flex:1 1 300px}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))}
  .step::after{display:none}
  .footer-main{grid-template-columns:1fr 1fr;gap:28px}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,88vw);background:#fff;
    flex-direction:column;align-items:stretch;gap:4px;margin:0;padding:84px 18px 28px;
    overflow-y:auto;transform:translateX(102%);transition:transform 280ms ease;z-index:80;
    box-shadow:-16px 0 40px -18px rgba(20,45,90,.4);
  }
  body.nav-open .main-nav{transform:translateX(0)}
  body.nav-open::before{
    content:"";position:fixed;inset:0;background:rgba(14,27,51,.45);z-index:75;
  }
  .nav-link{width:100%;justify-content:space-between;padding:12px 14px;font-size:15px}
  .nav-link.is-active::after{display:none}
  .nav-link.is-active{background:var(--brand-light)}
  .nav-toggle{display:block;z-index:85}
  .mega-panel{
    position:static;transform:none;opacity:1;visibility:visible;width:100%;
    box-shadow:none;border:0;padding:6px 0 4px;grid-template-columns:1fr;gap:14px;display:none;
  }
  .has-mega.open .mega-panel{display:grid}
  .mega-entry{max-width:220px}
}
@media (max-width:768px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .page-head{padding:32px 0 40px}
  .media-item{grid-template-columns:1fr;gap:14px}
  .media-thumb img{height:180px}
  .grid-2{grid-template-columns:minmax(0,1fr);gap:16px}
  .steps{grid-template-columns:minmax(0,1fr);gap:16px}
  .cta-band{padding:28px;border-radius:16px}
  .footer-main{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
  .side{flex-direction:column}
  .side-card{flex:1 1 auto}
  .faq-answer{margin-left:16px}
}
@media (max-width:480px){
  .nav-actions .btn-sm{display:none}
  .head-actions .btn{width:100%}
  .head-actions{flex-direction:column}
  .media-thumb img{height:160px}
}

/* roulang page: category2 */
:root{
  --primary:#1E4FD8;
  --primary-dark:#163CB0;
  --primary-soft:#E8EFFE;
  --accent:#0FB39B;
  --amber:#FF9F1C;
  --bg:#F7F9FC;
  --bg-alt:#F2F6FD;
  --line:#E5EBF5;
  --text:#16233A;
  --text-2:#5A6B85;
  --text-3:#8C9BB3;
  --dark:#0E1B33;
  --white:#FFFFFF;
  --danger:#E5484D;
  --radius-card:16px;
  --radius-btn:10px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.05);
  --shadow-card:0 6px 20px -8px rgba(20,45,90,.14);
  --shadow-hover:0 14px 30px -12px rgba(20,45,90,.22);
  --dur:180ms;
  --container:1200px;
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,sans-serif;
  --font-num:Inter,"SF Mono",ui-monospace,Menlo,Consolas,monospace;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4,p,ul,ol,figure{margin:0}
ul,ol{padding:0;list-style:none}
h1{font-size:clamp(32px,4vw,46px);line-height:1.24;font-weight:700;letter-spacing:-.01em}
h2{font-size:clamp(26px,2.6vw,32px);line-height:1.32;font-weight:700}
h3{font-size:clamp(18px,1.5vw,22px);line-height:1.45;font-weight:600}
.mono{font-family:var(--font-num);font-variant-numeric:tabular-nums}
:focus-visible{outline:2px solid var(--primary);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;border-radius:var(--radius-btn);
  font-size:15px;font-weight:600;line-height:1;cursor:pointer;
  border:1px solid transparent;background:var(--white);color:var(--text);
  transition:transform var(--dur) ease,background var(--dur) ease,color var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--primary);color:#fff;box-shadow:0 6px 16px -8px rgba(30,79,216,.72)}
.btn-primary:hover{background:var(--primary-dark);box-shadow:0 12px 24px -12px rgba(30,79,216,.75)}
.btn-outline{background:#fff;border-color:var(--primary);color:var(--primary)}
.btn-outline:hover{background:var(--primary-soft)}
.btn-ghost{background:transparent;color:var(--primary);padding:0 6px;height:auto}
.btn-ghost .arrow{transition:transform var(--dur) ease}
.btn-ghost:hover{transform:none;color:var(--primary-dark)}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn-gray{background:#EEF2F8;color:var(--text-2);border-color:var(--line)}
.btn-gray:hover{background:#E4EAF4;color:var(--text)}
.btn-sm{height:34px;padding:0 14px;font-size:14px}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-block{width:100%}
.btn[disabled],.btn.is-disabled{background:#C8D2E2;color:#fff;cursor:not-allowed;transform:none;box-shadow:none}

/* ---------- 徽章 ---------- */
.badge{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 10px;border-radius:999px;font-size:12px;font-weight:600;letter-spacing:.02em}
.badge-blue{background:var(--primary-soft);color:var(--primary)}
.badge-green{background:var(--accent);color:#fff}
.badge-green-soft{background:rgba(15,179,155,.12);color:#0A8E7C}
.badge-gray{background:#EEF2F8;color:var(--text-3)}
.badge-amber{background:rgba(255,159,28,.14);color:#B96A00}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 6px 18px -14px rgba(20,45,90,.35)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:9px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,#2A5CE8,#4B87FF);color:#fff;font-weight:700;font-size:16px;
  box-shadow:0 8px 16px -8px rgba(30,79,216,.8);
}
.logo-text{font-size:17px;font-weight:700;color:var(--text);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--primary);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:4px;margin-left:8px}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;height:68px;padding:0 14px;
  font-size:15px;font-weight:500;color:var(--text-2);position:relative;transition:color var(--dur) ease;
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:16px;height:2px;border-radius:2px;
  background:var(--primary);transform:scaleX(0);transform-origin:center;transition:transform var(--dur) ease;
}
.nav-link:hover{color:var(--primary)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--primary);font-weight:600}
.caret{width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;transform:rotate(45deg) translateY(-2px);transition:transform var(--dur) ease}
.has-mega:hover .caret{transform:rotate(225deg) translateY(-2px)}
.nav-actions{margin-left:auto;display:flex;align-items:center;gap:10px}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:10px;border:1px solid var(--line);background:#fff;
  align-items:center;justify-content:center;cursor:pointer;padding:0;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  display:block;width:18px;height:2px;border-radius:2px;background:var(--text);position:relative;transition:transform var(--dur) ease;
}
.nav-toggle span::before,.nav-toggle span::after{content:"";position:absolute;left:0}
.nav-toggle span::before{top:-6px}
.nav-toggle span::after{top:6px}

/* Mega 面板 */
.mega-panel{
  position:absolute;top:calc(100% + 12px);right:0;width:min(920px,92vw);
  background:#fff;border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-card);
  padding:24px;display:grid;grid-template-columns:1.15fr 1.15fr .9fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(-4px);transition:opacity var(--dur) ease,transform var(--dur) ease,visibility var(--dur) ease;
  z-index:90;
}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:14px;font-weight:600;color:var(--text-3);letter-spacing:.06em;margin-bottom:12px}
.mega-list li+li{margin-top:4px}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:9px 12px;border-radius:10px;font-size:14.5px;color:var(--text-2);transition:background var(--dur) ease,color var(--dur) ease;
}
.mega-list a:hover{background:var(--bg-alt);color:var(--primary)}
.mega-time{font-size:12px;color:var(--text-3);background:#EEF2F8;border-radius:999px;padding:2px 8px}
.mega-entry{display:block;border-radius:12px;overflow:hidden;border:1px solid var(--line);background:var(--bg-alt)}
.mega-entry img{aspect-ratio:16/10;object-fit:cover;width:100%}
.mega-entry span{display:block;padding:12px 14px;font-size:14px;font-weight:600;color:var(--text)}
.mega-entry:hover span{color:var(--primary)}

/* ---------- 通用板块 ---------- */
.section{padding:88px 0}
.section-alt{background:var(--bg-alt)}
.section-white{background:#fff}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{border-left:4px solid var(--primary);padding-left:14px;margin-bottom:12px}
.section-lead{color:var(--text-2);font-size:16px}
.section-head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:32px}

/* ---------- 内页头部 ---------- */
.page-hero{position:relative;background:#fff;border-bottom:1px solid var(--line);overflow:hidden}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center right;
  opacity:.9;
}
.page-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.97) 0%,rgba(255,255,255,.92) 46%,rgba(232,239,254,.72) 100%)}
.page-hero .container{position:relative;z-index:2;padding-top:44px;padding-bottom:56px}
.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:14px;color:var(--text-3);margin-bottom:20px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--primary)}
.breadcrumb .sep{color:#C3CDDE}
.breadcrumb .current{color:var(--text-3)}
.page-hero-grid{display:grid;grid-template-columns:1.35fr .95fr;gap:44px;align-items:center}
.page-hero h1{margin-bottom:16px}
.page-hero h1 .hl{color:var(--primary)}
.hero-lead{font-size:17px;color:var(--text-2);max-width:560px}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-visual{position:relative}
.hero-visual img{border-radius:var(--radius-card);box-shadow:var(--shadow-card);aspect-ratio:16/10;object-fit:cover;width:100%}
.hero-float{
  position:absolute;left:-16px;bottom:-18px;background:#fff;border:1px solid var(--line);
  border-radius:14px;box-shadow:var(--shadow-card);padding:12px 16px;display:flex;align-items:center;gap:10px;
}
.hero-float strong{font-size:14px;display:block}
.hero-float span{font-size:12px;color:var(--text-3)}
.dot-live{width:8px;height:8px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(15,179,155,.18)}

/* 锚点导航 */
.anchor-nav{display:flex;flex-wrap:wrap;gap:10px;margin-top:28px}
.anchor-nav a{
  font-size:13.5px;font-weight:500;color:var(--text-2);background:#fff;border:1px solid var(--line);
  border-radius:999px;padding:7px 14px;transition:all var(--dur) ease;
}
.anchor-nav a:hover{color:var(--primary);border-color:var(--primary);background:var(--primary-soft);transform:translateY(-2px)}

/* ---------- 数据卡 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 22px 20px;box-shadow:var(--shadow-sm);transition:transform var(--dur) ease,box-shadow var(--dur) ease;
}
.stat-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.stat-num{font-family:var(--font-num);font-size:30px;font-weight:700;color:var(--primary);line-height:1.2}
.stat-num small{font-size:14px;font-weight:600;color:var(--text-2);margin-left:4px}
.stat-label{font-size:14px;color:var(--text-2);margin-top:6px}
.stat-note{font-size:12.5px;color:var(--text-3);margin-top:10px;border-top:1px dashed var(--line);padding-top:10px}

/* ---------- 时间轴 ---------- */
.timeline{position:relative;max-width:860px;margin:0}
.timeline::before{content:"";position:absolute;left:19px;top:18px;bottom:18px;width:2px;background:var(--line)}
.tl-item{position:relative;padding-left:66px;margin-bottom:24px}
.tl-item:last-child{margin-bottom:0}
.tl-node{
  position:absolute;left:0;top:2px;width:40px;height:40px;border-radius:50%;
  border:2px solid var(--primary);background:#fff;color:var(--primary);
  display:flex;align-items:center;justify-content:center;
  font-family:var(--font-num);font-size:13.5px;font-weight:700;z-index:2;
  transition:background var(--dur) ease,color var(--dur) ease,transform var(--dur) ease;
}
.tl-item:hover .tl-node{transform:scale(1.06)}
.tl-item.is-current .tl-node{background:var(--primary);color:#fff;box-shadow:0 8px 18px -10px rgba(30,79,216,.85)}
.tl-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:22px 24px;box-shadow:var(--shadow-sm);
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.tl-item:hover .tl-card{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6E0F3}
.tl-card h3{margin-bottom:8px}
.tl-head{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;margin-bottom:8px}
.tl-card p{color:var(--text-2);font-size:15px}
.tl-tip{
  margin-top:14px;background:var(--primary-soft);border-radius:10px;padding:10px 14px;
  font-size:14px;color:#2B4470;
}
.tl-tip b{color:var(--primary);font-weight:600;margin-right:6px}

/* ---------- 平台网格 ---------- */
.platform-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.p-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
  padding:24px;display:flex;gap:16px;box-shadow:var(--shadow-sm);
  transition:transform var(--dur) ease,box-shadow var(--dur) ease,border-color var(--dur) ease;
}
.p-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D6E0F3}
.p-icon{
  flex:0 0 auto;width:48px;height:48px;border-radius:14px;background:var(--primary-soft);
  display:flex;align-items:center;justify-content:center;color:var(--primary);
}
.p-icon svg{width:24px;height:24px;fill:none;stroke:currentColor;stroke-width:1.7;stroke-linecap:round;stroke-linejoin:round}
.p-body h3{margin-bottom:6px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.p-body p{font-size:14.5px;color:var(--text-2);margin-bottom:10px}
.p-req{display:flex;flex-wrap:wrap;gap:8px;font-size:13px;color:var(--text-3)}
.p-req span{background:#F5F8FD;border:1px solid var(--line);border-radius:999px;padding:3px 10px}

/* ---------- 下载区 ---------- */
.download-wrap{
  background:var(--primary-soft);border-radius:20px;padding:32px;display:grid;
  grid-template-columns:1.25fr 1fr;gap:32px;align-items:center;
}
.pack-list li{
  display:flex;gap:14px;align-items:flex-start;padding:14px 16px;background:#fff;
  border:1px solid rgba(30,79,216,.12);border-radius:12px;margin-bottom:12px;
  transition:transform var(--dur) ease,box-shadow var(--dur) ease;
}
.pack-list li:last-child{margin-bottom:0}
.pack-list li:hover{transform:translateY(-2px);box-shadow:var(--shadow-card)}
.pack-list h3{font-size:16px;margin-bottom:4px}
.pack-list p{font-size:14px;color:var(--text-2)}
.pack-bullet{
  flex:0 0 auto;width:28px;height:28px;border-radius:9px;background:var(--primary);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;font-family:var(--font-num);
}
.dl-card{background:#fff;border-radius:16px;border:1px solid rgba(30,79,216,.14);padding:26px;box-shadow:var(--shadow-card)}
.dl-card h3{margin-bottom:6px}
.dl-card .dl-sub{font-size:14px;color:var(--text-2);margin-bottom:18px}
.dl-actions{display:flex;flex-direction:column;gap:10px}
.dl-actions .row{display:flex;gap:10px}
.dl-actions .row .btn{flex:1}
.dl-meta{margin-top:16px;font-size:13px;color:var(--text-3);display:flex;flex-wrap:wrap;gap:14px}
.dl-meta span{display:inline-flex;align-items:center;gap:6px}
.dl-meta i{width:6px;height:6px;border-radius:50%;background:var(--accent);display:inline-block}

/* ---------- FAQ ---------- */
.faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm)}
.faq-item{border-bottom:1px solid var(--line)}
.faq-item:last-child{border-bottom:0}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:18px;
  min-height:60px;padding:14px 24px;font-size:16px;font-weight:500;color:var(--text);
  transition:background var(--dur) ease,color var(--dur) ease;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"";flex:0 0 auto;width:12px;height:12px;position:relative;
  background:
    linear-gradient(currentColor,currentColor) center/12px 2px no-repeat,
    linear-gradient(currentColor,currentColor) center/2px 12px no-repeat;
  transition:transform var(--dur) ease,color var(--dur) ease;color:var(--primary);
}
.faq-item summary:hover{background:var(--bg-alt);color:var(--primary)}
.faq-item[open] summary{font-weight:600;color:var(--primary)}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-body{padding:0 24px 20px 24px;border-left:3px solid var(--primary);margin:0 0 0 24px;padding-left:16px}
.faq-body p{font-size:15px;color:var(--text-2)}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--dark);border-radius:20px;padding:36px 40px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  position:relative;overflow:hidden;
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-80px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(30,79,216,.55),transparent 68%);
}
.cta-band .cta-text{position:relative;z-index:2;max-width:620px}
.cta-band h2{color:#fff;font-size:clamp(22px,2.2vw,28px);margin-bottom:8px;border-left:4px solid var(--primary);padding-left:14px}
.cta-band p{color:rgba(255,255,255,.7);font-size:15px}
.cta-band .cta-actions{position:relative;z-index:2;display:flex;gap:12px;flex-wrap:wrap}
.cta-band .btn-outline{background:transparent;border-color:rgba(255,255,255,.42);color:#fff}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.12)}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);padding:64px 0 28px;margin-top:0}
.footer-main{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:36px;padding-bottom:32px}
.footer-brand .logo-text{color:#fff;font-size:18px;display:block;margin-bottom:14px}
.footer-brand .logo-text em{color:#7EA3FF}
.footer-brand p{font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:360px}
.footer-col h4{font-size:14px;font-weight:600;color:rgba(255,255,255,.55);letter-spacing:.06em;margin-bottom:14px}
.footer-col ul li{margin-bottom:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.72);transition:color var(--dur) ease}
.footer-col a:hover{color:#fff}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.08);padding-top:20px;
  display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13.5px;color:rgba(255,255,255,.5);
}

/* ---------- 移动粘性条 ---------- */
.mobile-bar{
  display:none;position:fixed;left:0;right:0;bottom:0;height:60px;z-index:70;
  background:#fff;box-shadow:0 -8px 24px -14px rgba(20,45,90,.5);
  padding:0 16px;align-items:center;justify-content:space-between;gap:12px;
  transform:translateY(100%);transition:transform .25s ease;
}
.mobile-bar.is-visible{transform:translateY(0)}
.mobile-bar .mb-text strong{display:block;font-size:14px}
.mobile-bar .mb-text span{font-size:12px;color:var(--text-3)}

/* ---------- 遮罩 ---------- */
body.nav-open::after{content:"";position:fixed;inset:0;background:rgba(14,27,51,.45);z-index:75}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .mega-panel{right:-40px}
}
@media (max-width:1024px){
  .nav-toggle{display:flex}
  .main-nav{
    position:fixed;top:0;right:0;height:100vh;width:min(340px,86vw);background:#fff;
    flex-direction:column;align-items:stretch;gap:2px;margin:0;padding:80px 20px 32px;
    overflow-y:auto;transform:translateX(100%);transition:transform .26s ease;z-index:80;
    box-shadow:-14px 0 34px -20px rgba(20,45,90,.4);
  }
  .main-nav.is-open{transform:translateX(0)}
  .nav-item{width:100%}
  .nav-link{height:auto;padding:12px 6px;width:100%;justify-content:space-between;font-size:15.5px}
  .nav-link::after{display:none}
  .nav-link.is-active{background:var(--primary-soft);border-radius:10px;padding-left:12px}
  .mega-panel{
    position:static;width:100%;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border-radius:12px;padding:14px;grid-template-columns:1fr;gap:16px;margin:6px 0 10px;
  }
  .has-mega:hover .mega-panel{transform:none}
  .page-hero-grid{grid-template-columns:1fr;gap:30px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .download-wrap{grid-template-columns:1fr;gap:24px}
  .footer-main{grid-template-columns:1.4fr 1fr 1fr;gap:28px}
}
@media (max-width:768px){
  body{font-size:15.5px}
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-head-row{flex-direction:column;align-items:flex-start;gap:12px}
  .platform-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .tl-item{padding-left:56px;margin-bottom:18px}
  .timeline::before{left:17px}
  .tl-node{width:36px;height:36px;font-size:12.5px}
  .tl-card{padding:18px}
  .download-wrap{padding:20px;border-radius:16px}
  .dl-actions .row{flex-direction:column}
  .cta-band{padding:26px 22px}
  .cta-band .cta-actions .btn{flex:1}
  .footer-main{grid-template-columns:1fr 1fr;gap:24px;padding-bottom:24px}
  .footer-brand{grid-column:1 / -1}
  .footer-bottom{flex-direction:column;gap:8px}
  .mobile-bar{display:flex}
  .faq-item summary{padding:14px 16px;font-size:15.5px}
  .faq-body{margin-left:16px;padding-left:14px;padding-right:16px}
  .page-hero .container{padding-top:30px;padding-bottom:40px}
  .hero-float{left:0;bottom:-14px}
}
@media (max-width:520px){
  h1{font-size:29px}
  .logo-text{font-size:15px}
  .hero-actions .btn{width:100%}
  .anchor-nav a{font-size:13px;padding:6px 12px}
  .footer-main{grid-template-columns:1fr}
  .stat-card{padding:18px}
}

/* roulang page: category3 */
:root{
  --brand:#1E4FD8;
  --brand-dark:#163CB0;
  --brand-soft:#E8EFFE;
  --teal:#0FB39B;
  --amber:#FF9F1C;
  --bg:#F7F9FC;
  --bg-alt:#F2F6FD;
  --surface:#FFFFFF;
  --line:#E5EBF5;
  --text:#16233A;
  --text-2:#5A6B85;
  --text-3:#8C9BB3;
  --dark:#0E1B33;
  --danger:#E5484D;
  --r-card:16px;
  --r-btn:10px;
  --r-pill:999px;
  --shadow-sm:0 1px 2px rgba(15,27,45,.05);
  --shadow-card:0 6px 20px -8px rgba(20,45,90,.14);
  --shadow-hover:0 14px 30px -12px rgba(20,45,90,.22);
  --t:180ms ease;
  --gap:24px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Noto Sans SC",system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  color:var(--text);
  background:var(--bg);
}
img{max-width:100%;display:block;border:0}
a{color:inherit;text-decoration:none}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,p{margin:0}
button,input,select,textarea{font:inherit;color:inherit}
button{cursor:pointer;background:none;border:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.mono{font-family:"SFMono-Regular",Inter,Consolas,"Liberation Mono",monospace;font-variant-numeric:tabular-nums}

.container{max-width:1200px;margin:0 auto;padding:0 20px}
.section{padding:88px 0}
.section-alt{background:var(--surface)}
.section-tint{background:var(--bg-alt)}
.section-head{max-width:760px;margin-bottom:36px}
.section-head h2{
  position:relative;
  font-size:clamp(26px,2.6vw,32px);
  line-height:1.35;
  font-weight:700;
  padding-left:16px;
  margin:0 0 12px;
}
.section-head h2::before{
  content:"";
  position:absolute;left:0;top:6px;
  width:4px;height:20px;
  border-radius:2px;
  background:var(--brand);
}
.section-head p{color:var(--text-2);font-size:16px}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:12px;font-weight:600;letter-spacing:.08em;
  color:var(--brand);background:var(--brand-soft);
  padding:5px 12px;border-radius:var(--r-pill);
  margin-bottom:14px;
}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:40px;padding:0 20px;
  border-radius:var(--r-btn);
  font-size:15px;font-weight:600;
  border:1px solid transparent;
  transition:background var(--t),color var(--t),border-color var(--t),transform var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn-lg{height:48px;padding:0 26px;font-size:16px}
.btn-sm{height:36px;padding:0 16px;font-size:14px}
.btn-primary{background:var(--brand);color:#fff;box-shadow:0 6px 16px -8px rgba(30,79,216,.7)}
.btn-primary:hover{background:var(--brand-dark);transform:translateY(-2px);box-shadow:0 12px 22px -10px rgba(30,79,216,.75)}
.btn-primary:active{transform:translateY(1px)}
.btn-outline{background:#fff;color:var(--brand);border-color:#C6D6F7}
.btn-outline:hover{border-color:var(--brand);background:var(--brand-soft);transform:translateY(-2px)}
.btn-outline:active{transform:translateY(1px)}
.btn-ghost{color:var(--brand);padding:0 4px;height:auto}
.btn-ghost .arrow{transition:transform var(--t)}
.btn-ghost:hover .arrow{transform:translateX(4px)}
.btn[disabled],.btn.is-disabled{background:#C8D2E2;color:#fff;box-shadow:none;transform:none;cursor:not-allowed}

/* ---------- 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  font-size:12px;font-weight:600;
  padding:4px 10px;border-radius:var(--r-pill);
  line-height:1.6;
}
.badge-brand{background:var(--brand-soft);color:var(--brand)}
.badge-teal{background:var(--teal);color:#fff}
.badge-amber{background:#FFF3E0;color:#A75B00}
.badge-gray{background:#EEF2F8;color:var(--text-3)}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:#fff;
  border-bottom:1px solid transparent;
  transition:box-shadow var(--t),border-color var(--t);
}
.site-header.is-scrolled{border-bottom-color:var(--line);box-shadow:0 4px 16px -12px rgba(15,27,45,.5)}
.nav-wrap{display:flex;align-items:center;gap:28px;height:72px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:9px;
  background:linear-gradient(140deg,var(--brand),#3B72F0);
  color:#fff;font-weight:700;font-size:17px;
  display:flex;align-items:center;justify-content:center;
  box-shadow:0 6px 14px -8px rgba(30,79,216,.9);
}
.logo-text{font-size:17px;font-weight:700;letter-spacing:0;color:var(--text);white-space:nowrap}
.logo-text em{font-style:normal;color:var(--brand);margin-left:2px}
.main-nav{display:flex;align-items:center;gap:4px;flex:1 1 auto}
.nav-item{position:relative}
.nav-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:10px 14px;border-radius:var(--r-btn);
  font-size:15px;font-weight:500;color:var(--text-2);
  position:relative;transition:color var(--t),background var(--t);
}
.nav-link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:2px;
  background:var(--brand);border-radius:2px;
  transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav-link:hover{color:var(--brand);background:var(--brand-soft)}
.nav-link:hover::after,.nav-link.is-active::after{transform:scaleX(1)}
.nav-link.is-active{color:var(--brand);font-weight:600}
.caret{
  width:6px;height:6px;border-right:1.6px solid currentColor;border-bottom:1.6px solid currentColor;
  transform:rotate(45deg) translate(-2px,-2px);transition:transform var(--t);
}
.has-mega:hover .caret,.has-mega:focus-within .caret{transform:rotate(-135deg) translate(-2px,-2px)}
.mega-panel{
  position:absolute;top:calc(100% + 10px);left:-16px;width:min(920px,92vw);
  background:#fff;border:1px solid var(--line);border-radius:14px;
  box-shadow:var(--shadow-card);
  padding:24px;display:grid;grid-template-columns:1.1fr 1.1fr .9fr;gap:24px;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity var(--t),transform var(--t),visibility var(--t);
}
.has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{opacity:1;visibility:visible;transform:translateY(0)}
.mega-col h4{font-size:13px;font-weight:600;color:var(--text-3);letter-spacing:.06em;margin-bottom:12px}
.mega-list li+li{margin-top:4px}
.mega-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:9px 12px;border-radius:12px;font-size:14px;color:var(--text-2);
  transition:background var(--t),color var(--t);
}
.mega-list a:hover{background:var(--bg-alt);color:var(--brand)}
.mega-time{font-size:12px;color:var(--text-3)}
.mega-entry{display:block;border:1px solid var(--line);border-radius:12px;overflow:hidden;transition:transform var(--t),box-shadow var(--t)}
.mega-entry img{width:100%;aspect-ratio:16/10;object-fit:cover}
.mega-entry span{display:block;padding:10px 12px;font-size:14px;font-weight:600;color:var(--brand)}
.mega-entry:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-btn);
  border:1px solid var(--line);background:#fff;position:relative;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  position:absolute;left:11px;width:18px;height:2px;background:var(--text);border-radius:2px;content:"";
  transition:transform var(--t),opacity var(--t);
}
.nav-toggle span{top:19px}
.nav-toggle span::before{top:-6px;left:0}
.nav-toggle span::after{top:6px;left:0}
body.nav-open .nav-toggle span{background:transparent}
body.nav-open .nav-toggle span::before{transform:translateY(6px) rotate(45deg)}
body.nav-open .nav-toggle span::after{transform:translateY(-6px) rotate(-45deg)}
.nav-overlay{
  position:fixed;inset:0;background:rgba(14,27,51,.45);
  opacity:0;visibility:hidden;transition:opacity var(--t),visibility var(--t);z-index:70;
}
body.nav-open .nav-overlay{opacity:1;visibility:visible}

/* ---------- 内页首屏 ---------- */
.page-hero{
  position:relative;
  background:
    linear-gradient(115deg,rgba(30,79,216,.07),rgba(15,179,155,.05)),
    url(/assets/images/backpic/back-2.png) center/cover no-repeat;
  border-bottom:1px solid var(--line);
}
.page-hero::after{
  content:"";position:absolute;inset:0;background:rgba(255,255,255,.72);
}
.page-hero .container{position:relative;z-index:1}
.breadcrumb{
  display:flex;align-items:center;gap:8px;
  font-size:14px;color:var(--text-3);
  padding:22px 0 0;
}
.breadcrumb a{color:var(--text-2)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb span[aria-current]{color:var(--text-3)}
.hero-grid{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);
  gap:48px;align-items:start;
  padding:32px 0 64px;
}
.hero-grid h1{
  font-size:clamp(32px,4vw,46px);
  line-height:1.25;font-weight:700;letter-spacing:-.01em;
  margin-bottom:16px;
}
.hero-grid h1 .hl{color:var(--brand)}
.hero-lead{font-size:17px;color:var(--text-2);max-width:560px;margin-bottom:24px}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:20px}
.hero-meta{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.anchor-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-card);padding:22px;
}
.anchor-card h4{font-size:14px;color:var(--text-3);font-weight:600;letter-spacing:.05em;margin-bottom:12px}
.anchor-card ul li+li{margin-top:2px}
.anchor-card a{
  display:flex;align-items:center;justify-content:space-between;
  padding:10px 12px;border-radius:10px;font-size:14px;color:var(--text-2);
  transition:background var(--t),color var(--t),padding var(--t);
}
.anchor-card a::after{content:"→";color:var(--text-3);font-size:13px}
.anchor-card a:hover{background:var(--bg-alt);color:var(--brand);padding-left:16px}
.anchor-note{
  margin-top:16px;padding:12px 14px;border-radius:12px;
  background:var(--brand-soft);color:var(--brand);font-size:13px;
}

/* ---------- 卡片矩阵 ---------- */
.matrix{
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));
  gap:var(--gap);align-items:start;
}
.m-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  box-shadow:var(--shadow-sm);padding:26px;
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.m-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5E0F5}
.m-card h3{font-size:19px;font-weight:600;margin-bottom:8px;transition:color var(--t)}
.m-card:hover h3{color:var(--brand)}
.m-card p{color:var(--text-2);font-size:15px}
.icon-badge{
  width:44px;height:44px;border-radius:12px;
  display:flex;align-items:center;justify-content:center;
  font-size:19px;font-weight:700;margin-bottom:16px;
  background:var(--brand-soft);color:var(--brand);
}
.m-card.is-wide{
  grid-column:1 / -1;
  display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:28px;align-items:center;
  padding:28px;
}
.m-card.is-wide img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:12px}
.m-card.is-tall{padding:26px 26px 30px}
.m-card.is-dark{
  grid-column:1 / -1;
  background:var(--dark);border-color:var(--dark);color:#fff;
}
.m-card.is-dark h3{color:#fff}
.m-card.is-dark p{color:rgba(255,255,255,.72)}
.m-card.is-dark .icon-badge{background:rgba(255,255,255,.12);color:#fff}

/* ---------- 三步校验 ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:var(--gap)}
.step-card{
  position:relative;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:26px;box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t);
}
.step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.step-num{
  width:38px;height:38px;border-radius:var(--r-pill);
  border:2px solid var(--brand);color:var(--brand);
  display:flex;align-items:center;justify-content:center;
  font-weight:700;font-size:15px;margin-bottom:16px;
}
.step-card h3{font-size:18px;font-weight:600;margin-bottom:8px}
.step-card p{color:var(--text-2);font-size:15px;margin-bottom:14px}
.tip{
  background:var(--brand-soft);border-radius:12px;
  padding:12px 14px;font-size:13px;color:var(--brand);
  border-left:3px solid var(--brand);
}

/* ---------- 防护清单 ---------- */
.check-list{border:1px solid var(--line);border-radius:var(--r-card);background:#fff;overflow:hidden;box-shadow:var(--shadow-sm)}
.check-row{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;
  gap:16px;align-items:center;
  padding:20px 24px;
  transition:background var(--t);
}
.check-row+.check-row{border-top:1px solid var(--line)}
.check-row:hover{background:var(--bg-alt)}
.check-index{
  width:36px;height:36px;border-radius:10px;background:var(--bg-alt);color:var(--brand);
  display:flex;align-items:center;justify-content:center;font-weight:700;font-size:14px;
}
.check-row h3{font-size:17px;font-weight:600;margin-bottom:2px}
.check-row p{font-size:14px;color:var(--text-2)}

/* ---------- FAQ ---------- */
.faq{background:#fff;border:1px solid var(--line);border-radius:var(--r-card);box-shadow:var(--shadow-sm);overflow:hidden}
.faq details{border-bottom:1px solid var(--line)}
.faq details:last-child{border-bottom:0}
.faq summary{
  list-style:none;cursor:pointer;
  min-height:48px;padding:16px 56px 16px 22px;
  position:relative;font-size:16px;font-weight:500;
  display:flex;align-items:center;
  transition:color var(--t),background var(--t);
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{
  content:"+";position:absolute;right:22px;top:50%;
  width:22px;height:22px;line-height:20px;text-align:center;
  color:var(--brand);font-size:20px;font-weight:400;
  transform:translateY(-50%) rotate(0deg);
  transition:transform var(--t);
}
.faq summary:hover{background:var(--bg-alt);color:var(--brand)}
.faq details[open] summary{font-weight:600;color:var(--brand)}
.faq details[open] summary::after{transform:translateY(-50%) rotate(45deg)}
.faq .faq-body{
  padding:0 22px 20px;
  color:var(--text-2);font-size:15px;
  border-left:3px solid var(--brand);
  margin:0 0 0 0;
}
.faq .faq-body p{padding-left:0}

/* ---------- 场景对比 ---------- */
.compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--gap)}
.compare-col{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-card);
  padding:28px;box-shadow:var(--shadow-sm);
  transition:transform var(--t),box-shadow var(--t),border-color var(--t);
}
.compare-col:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.compare-col.is-accent{border-color:#C6D6F7;background:linear-gradient(180deg,#F6F9FF,#fff)}
.compare-col h3{font-size:20px;font-weight:600;margin:14px 0 6px}
.compare-col .sub{font-size:14px;color:var(--text-3);margin-bottom:18px}
.compare-col ul li{
  display:flex;gap:10px;align-items:flex-start;
  padding:10px 0;font-size:15px;color:var(--text-2);
}
.compare-col ul li+li{border-top:1px dashed var(--line)}
.compare-col ul li .dot{
  flex:0 0 auto;width:20px;height:20px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand);
  font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:3px;
}
.compare-col.is-accent ul li .dot{background:#E2F6F2;color:#0A8574}
.compare-foot{
  margin-top:20px;padding:14px 16px;border-radius:12px;
  background:var(--bg-alt);font-size:14px;color:var(--text-2);
}

/* ---------- 留言表单 ---------- */
.form-wrap{
  display:grid;grid-template-columns:minmax(0,.95fr) minmax(0,1.05fr);
  gap:48px;align-items:center;
}
.form-side img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-card);box-shadow:var(--shadow-card);margin-bottom:20px}
.form-card{
  background:#fff;border:1px solid var(--line);border-radius:20px;
  box-shadow:var(--shadow-card);padding:32px;
}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.field{display:flex;flex-direction:column;gap:8px}
.field.full{grid-column:1 / -1}
.field label{font-size:14px;font-weight:600;color:var(--text)}
.field label .req{color:var(--danger);margin-left:2px}
.field input,.field select,.field textarea{
  height:44px;padding:0 14px;
  border:1px solid var(--line);border-radius:var(--r-btn);
  background:#fff;font-size:15px;color:var(--text);
  transition:border-color var(--t),box-shadow var(--t);
}
.field textarea{height:106px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 3px rgba(30,79,216,.08);
}
.field .hint{font-size:13px;color:var(--text-3)}
.field.has-error input,.field.has-error select{border-color:var(--danger)}
.field .err{font-size:13px;color:var(--danger);display:none}
.field.has-error .err{display:block}
.form-actions{grid-column:1 / -1;display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:4px}
.form-note{grid-column:1 / -1;font-size:13px;color:var(--text-3)}
.form-success{
  display:none;grid-column:1 / -1;
  background:#E9F8F4;color:#0A8574;border-radius:12px;
  padding:12px 14px;font-size:14px;
}
.form-success.is-show{display:block}

/* ---------- CTA 横幅 ---------- */
.cta-band{
  background:var(--dark);border-radius:20px;
  padding:40px 44px;
  display:flex;align-items:center;justify-content:space-between;gap:32px;
  color:#fff;
}
.cta-band h2{
  font-size:clamp(22px,2.4vw,28px);font-weight:700;line-height:1.4;margin-bottom:8px;padding:0;
}
.cta-band h2::before{display:none}
.cta-band p{color:rgba(255,255,255,.72);font-size:15px;max-width:620px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;flex:0 0 auto}
.cta-band .btn-outline{background:transparent;color:#fff;border-color:rgba(255,255,255,.35)}
.cta-band .btn-outline:hover{background:rgba(255,255,255,.12);border-color:#fff}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:rgba(255,255,255,.72);margin-top:0}
.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;
  padding:64px 0 40px;
}
.footer-brand .logo-text{color:#fff;font-size:18px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.68);margin-top:14px;max-width:330px}
.footer-col h4{font-size:14px;color:rgba(255,255,255,.55);font-weight:600;letter-spacing:.04em;margin-bottom:16px}
.footer-col ul li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(255,255,255,.82);transition:color var(--t)}
.footer-col a:hover{color:#fff}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  border-top:1px solid rgba(255,255,255,.08);
  padding:20px 0 28px;font-size:13px;color:rgba(255,255,255,.6);
}
.footer-bottom .mono{color:rgba(255,255,255,.75)}

/* ---------- 移动端粘性底条 ---------- */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;align-items:center;justify-content:space-between;gap:14px;
  height:60px;padding:0 16px;
  background:#fff;box-shadow:0 -6px 20px -12px rgba(20,45,90,.4);
  transform:translateY(110%);transition:transform var(--t);
}
.mobile-bar.is-visible{transform:translateY(0)}
.mobile-bar .bar-text{font-size:12px;color:var(--text-3);line-height:1.5}
.mobile-bar .bar-text strong{display:block;font-size:13px;color:var(--text);font-weight:600}

/* ---------- 响应式 ---------- */
@media (max-width:1280px){
  .mega-panel{width:min(880px,92vw)}
}
@media (max-width:1024px){
  .section{padding:64px 0}
  .main-nav{
    position:fixed;top:0;right:0;bottom:0;width:min(340px,86vw);
    background:#fff;flex-direction:column;align-items:stretch;gap:2px;
    padding:84px 20px 32px;overflow-y:auto;
    transform:translateX(105%);transition:transform var(--t);
    box-shadow:-16px 0 40px -20px rgba(14,27,51,.5);z-index:75;
  }
  body.nav-open .main-nav{transform:translateX(0)}
  .nav-link{padding:14px 12px;font-size:16px;border-radius:12px}
  .nav-link::after{display:none}
  .mega-panel{
    position:static;width:auto;opacity:1;visibility:visible;transform:none;
    box-shadow:none;border:0;padding:0 0 8px;grid-template-columns:1fr;gap:16px;
    display:none;
  }
  .has-mega:hover .mega-panel,.has-mega:focus-within .mega-panel{display:grid}
  .nav-toggle{display:block}
  .nav-actions .btn-primary{display:none}
  .hero-grid{grid-template-columns:1fr;gap:28px;padding:24px 0 48px}
  .m-card.is-wide{grid-template-columns:1fr;gap:20px}
  .steps{grid-template-columns:1fr}
  .form-wrap{grid-template-columns:1fr;gap:32px}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;padding:48px 0 32px}
  .cta-band{flex-direction:column;align-items:flex-start;padding:32px}
}
@media (max-width:768px){
  .section{padding:48px 0}
  .container{padding:0 16px}
  .nav-wrap{height:64px;gap:12px}
  .matrix{grid-template-columns:1fr;gap:16px}
  .m-card,.m-card.is-tall,.m-card.is-wide{padding:22px}
  .compare{grid-template-columns:1fr;gap:16px}
  .check-row{grid-template-columns:44px minmax(0,1fr);gap:12px;padding:18px}
  .check-row .badge{grid-column:2;justify-self:start}
  .form-card{padding:24px}
  .form-grid{grid-template-columns:1fr}
  .footer-main{grid-template-columns:1fr}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .mobile-bar{display:flex}
  .faq summary{padding:14px 48px 14px 16px;font-size:15px}
  .faq summary::after{right:16px}
  .faq .faq-body{padding:0 16px 18px}
  .anchor-card{padding:18px}
  body.has-mobile-bar{padding-bottom:60px}
}
@media (max-width:520px){
  .hero-grid h1{font-size:30px}
  .hero-actions .btn{width:100%}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .logo-text{font-size:15px}
  .logo-text em{display:inline}
}