/* roulang page: index */
:root{
  --brand-600:#1B6BF2;
  --brand-700:#1257CE;
  --brand-050:#EAF1FF;
  --accent-500:#FF7A2F;
  --accent-600:#E9651B;
  --teal-500:#12A594;
  --ink-900:#16202E;
  --ink-700:#2B3A4E;
  --ink-500:#5C6E86;
  --line:#E4EAF3;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --surface-2:#F8FAFD;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-sm:0 6px 18px rgba(18,42,84,.06);
  --shadow-md:0 14px 34px rgba(18,42,84,.10);
  --shadow-focus:0 0 0 4px rgba(27,107,242,.18);
  --ease:200ms cubic-bezier(.2,.6,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-num:"Inter","SF Pro Text",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
  overflow-x:hidden;
}
img{max-width:100%;display:block;background:#EEF2F8;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4,h5{margin:0;color:var(--ink-900);font-weight:700;}
h1{font-size:clamp(30px,2.6vw + 20px,50px);line-height:1.22;}
h2{font-size:clamp(23px,1.6vw + 16px,34px);line-height:1.3;}
h3{font-size:clamp(19px,0.6vw + 14px,22px);line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0 0 1em;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--shadow-focus);border-radius:var(--r-sm);}
.container{max-width:1200px;padding-left:20px;padding-right:20px;}
@media (min-width:992px){.container{padding-left:24px;padding-right:24px;}}
@media (min-width:1400px){.container{max-width:1320px;}}
.num{font-family:var(--font-num);font-variant-numeric:tabular-nums;}

/* ---------- 导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:1040;
  background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease);
}
.site-header.scrolled{box-shadow:var(--shadow-sm);}
.nav-inner{height:76px;display:flex;align-items:center;gap:22px;}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:40px;height:40px;border-radius:13px;
  background:linear-gradient(140deg,#3D86FF,#1B6BF2 60%,#1257CE);
  color:#fff;display:grid;place-items:center;font-size:18px;
  box-shadow:0 6px 16px rgba(27,107,242,.28);
}
.brand-text{font-size:17px;font-weight:700;color:var(--ink-900);line-height:1.2;white-space:nowrap;}
.brand-text small{display:block;font-size:11px;font-weight:600;color:var(--ink-500);line-height:1.4;}
.nav-search{flex:1 1 auto;max-width:560px;margin:0 auto;}
.search-box{position:relative;display:flex;align-items:center;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);height:48px;transition:border-color var(--ease),box-shadow var(--ease);}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:var(--shadow-focus);}
.search-box .fa-magnifying-glass{position:absolute;left:18px;color:var(--ink-500);font-size:15px;pointer-events:none;}
.search-box input{
  flex:1;height:100%;border:0;background:transparent;outline:none;
  padding:0 120px 0 44px;font-size:15px;color:var(--ink-900);font-family:inherit;
  border-radius:var(--r-pill);
}
.search-box input::placeholder{color:var(--ink-500);}
.search-box button{
  position:absolute;right:4px;height:40px;padding:0 22px;border:0;border-radius:var(--r-pill);
  background:var(--brand-600);color:#fff;font-size:14px;font-weight:600;cursor:pointer;
  transition:background var(--ease),transform var(--ease);
}
.search-box button:hover{background:var(--brand-700);}
.search-box button:active{transform:scale(.97);}
.nav-links{display:flex;align-items:center;gap:26px;flex:0 0 auto;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;font-weight:500;
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
  background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
}
.nav-links a:hover{color:var(--brand-600);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:var(--brand-600);font-weight:600;}
.nav-links a.active::after{transform:scaleX(1);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;
  color:var(--ink-700);font-size:18px;align-items:center;justify-content:center;cursor:pointer;
  transition:border-color var(--ease),color var(--ease),background var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.mobile-drawer{
  display:none;background:#fff;border-bottom:1px solid var(--line);
  padding:16px 0 22px;box-shadow:var(--shadow-sm);
}
.mobile-drawer.open{display:block;}
.mobile-drawer .group-title{font-size:15px;font-weight:600;color:var(--ink-900);margin:14px 0 6px;}
.mobile-drawer a.drawer-link{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:15px;color:var(--ink-700);border-radius:12px;padding:0 12px;
}
.mobile-drawer a.drawer-link:hover{background:var(--brand-050);color:var(--brand-600);}
.mobile-drawer a.drawer-link.active{color:var(--brand-600);font-weight:600;background:var(--brand-050);}

/* ---------- 按钮 ---------- */
.btn-x{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:600;border-radius:13px;border:1px solid transparent;cursor:pointer;transition:all var(--ease);font-family:inherit;text-align:center;}
.btn-download{
  background:var(--accent-500);color:#fff;height:56px;padding:0 30px;font-size:16px;
  box-shadow:0 10px 24px rgba(255,122,47,.24);
}
.btn-download:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-download:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.12);}
.btn-primary-x{background:var(--brand-600);color:#fff;height:52px;padding:0 28px;font-size:15px;}
.btn-primary-x:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary-x:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:var(--ink-700);border:1px solid var(--line);height:52px;padding:0 26px;font-size:15px;}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.btn-ghost:active{transform:translateY(1px);}
.btn-link-x{display:inline-flex;align-items:center;gap:8px;color:var(--brand-600);font-weight:600;font-size:15px;background:none;border:0;padding:0;cursor:pointer;}
.btn-link-x i{transition:transform var(--ease);}
.btn-link-x:hover i{transform:translateX(4px);}
.btn-x[disabled],.btn-x.disabled{opacity:.4;cursor:not-allowed;transform:none;}

/* ---------- 通用 ---------- */
.section{padding-block:clamp(56px,7vw,100px);}
.section-head{margin-bottom:34px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:600;
  margin-bottom:14px;
}
.section-head h2{margin-bottom:12px;}
.section-head p{color:var(--ink-500);margin:0;max-width:760px;font-size:15.5px;}
.head-row{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;flex-wrap:wrap;}
.badge-soft{
  display:inline-flex;align-items:center;height:25px;padding:0 11px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.badge-teal{background:rgba(18,165,148,.12);color:#0E8477;}
.badge-accent{background:rgba(255,122,47,.12);color:var(--accent-600);}
.divider{height:1px;background:var(--line);border:0;margin:0;}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding-block:clamp(48px,6vw,86px) clamp(52px,7vw,96px);
  background:
    linear-gradient(118deg,rgba(27,107,242,.05),rgba(255,255,255,0) 46%),
    linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);
  overflow:hidden;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-140px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle,rgba(27,107,242,.08),rgba(27,107,242,0) 68%);
  pointer-events:none;
}
.hero-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.hero-copy h1{margin-bottom:18px;}
.hero-sub{font-size:17px;color:var(--ink-500);line-height:1.8;margin-bottom:20px;max-width:520px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.hero-tags span{
  display:inline-flex;align-items:center;gap:7px;height:32px;padding:0 14px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--ink-700);
}
.hero-tags span i{color:var(--brand-600);font-size:12px;}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:14px;}
.hero-note{font-size:13px;color:var(--ink-500);display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
.hero-note .dot{width:6px;height:6px;border-radius:50%;background:var(--teal-500);display:inline-block;}
.hero-visual{position:relative;}
.hero-visual .visual-bg{
  position:absolute;inset:12px -12px -12px 12px;border-radius:22px;
  background-image:url("/assets/images/backpic/back-1.webp");
  background-size:cover;background-position:center;
  filter:grayscale(.15);
}
.hero-visual .visual-bg::after{content:"";position:absolute;inset:0;border-radius:22px;background:rgba(245,248,252,.66);}
.hero-shot{
  position:relative;z-index:2;border-radius:20px;background:#fff;padding:12px;
  box-shadow:var(--shadow-md);transform:rotate(-1.4deg);
}
.hero-shot img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:14px;}
.hero-shot .shot-tag{
  position:absolute;left:24px;top:24px;z-index:3;
  background:rgba(255,255,255,.92);color:var(--brand-700);
  height:26px;display:inline-flex;align-items:center;padding:0 12px;border-radius:var(--r-pill);
  font-size:12.5px;font-weight:600;
}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:34px;position:relative;z-index:2;}
.chip{
  display:inline-flex;align-items:center;height:34px;padding:0 15px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--ink-700);font-weight:500;
  transition:all var(--ease);
}
.chip:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.chip.active{background:var(--brand-600);color:#fff;border-color:var(--brand-600);}

/* ---------- 价值三点条 ---------- */
.value-strip{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
.value-grid{display:grid;grid-template-columns:repeat(3,1fr);}
.value-item{display:flex;gap:16px;padding:34px 30px;align-items:flex-start;}
.value-item + .value-item{border-left:1px solid var(--line);}
.value-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:var(--brand-050);
  color:var(--brand-600);display:grid;place-items:center;font-size:17px;
}
.value-item h3{font-size:17px;margin-bottom:6px;}
.value-item p{margin:0;font-size:14.5px;color:var(--ink-500);line-height:1.75;}

/* ---------- 轮播 ---------- */
.shot-carousel{padding-bottom:56px;}
.shot-slide{border-radius:18px;overflow:hidden;background:#fff;box-shadow:var(--shadow-sm);}
.shot-slide img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.shot-caption{
  padding:18px 24px;display:flex;align-items:center;gap:14px;flex-wrap:wrap;
  background:#fff;border-top:1px solid var(--line);
}
.shot-caption h3{font-size:17px;margin:0;}
.shot-caption p{margin:0;font-size:14px;color:var(--ink-500);}
.carousel-indicators-x{
  position:relative;margin:24px 0 0;display:flex;justify-content:center;gap:9px;
}
.carousel-indicators-x [data-bs-target]{
  width:34px;height:6px;border-radius:var(--r-pill);background:var(--line);border:0;
  padding:0;margin:0;opacity:1;transition:all var(--ease);
}
.carousel-indicators-x [data-bs-target].active{background:var(--brand-600);width:52px;}
.carousel-control-x{
  position:absolute;top:50%;transform:translateY(-50%);z-index:6;
  width:44px;height:44px;border-radius:50%;background:#fff;border:1px solid var(--line);
  color:var(--ink-700);display:grid;place-items:center;font-size:16px;cursor:pointer;
  transition:all var(--ease);box-shadow:var(--shadow-sm);
}
.carousel-control-x:hover{color:var(--brand-600);border-color:var(--brand-600);}
.carousel-control-x.prev{left:-22px;}
.carousel-control-x.next{right:-22px;}

/* ---------- 系统要求 ---------- */
.req-wrap{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:26px;box-shadow:var(--shadow-sm);
}
.req-list{display:grid;grid-template-columns:1fr 1fr;gap:0 34px;}
.req-row{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:44px;border-bottom:1px solid var(--line);font-size:15px;}
.req-row dt{margin:0;color:var(--ink-500);font-weight:400;}
.req-row dd{margin:0;color:var(--ink-900);font-weight:600;text-align:right;}
.req-foot{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-top:20px;font-size:14px;color:var(--ink-500);}
.tech-panel{
  background:#F3F6FB;border:1px solid var(--line);border-radius:var(--r-md);
  padding:18px 20px;font-family:var(--font-num);font-size:13.5px;line-height:2;color:var(--ink-700);
  margin-bottom:22px;
}
.tech-panel .k{color:var(--brand-700);font-weight:600;}
.tech-panel .v{color:var(--ink-900);}
.tech-panel .ok{color:var(--teal-500);font-weight:600;}

/* ---------- 评价 ---------- */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
.review-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:24px;
  transition:all var(--ease);display:flex;flex-direction:column;
}
.review-card:nth-child(even){transform:translateY(24px);}
.review-card:hover{border-color:rgba(27,107,242,.35);box-shadow:var(--shadow-md);transform:translateY(-4px);}
.review-card:nth-child(even):hover{transform:translateY(18px);}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px;}
.avatar{
  width:40px;height:40px;border-radius:50%;background:var(--brand-050);color:var(--brand-700);
  display:grid;place-items:center;font-size:15px;font-weight:700;flex:0 0 auto;
}
.review-name{font-size:14.5px;font-weight:600;color:var(--ink-900);}
.review-name small{display:block;font-size:12.5px;color:var(--ink-500);font-weight:400;}
.stars{color:var(--accent-500);font-size:12.5px;letter-spacing:1px;}
.stars .off{color:var(--line);}
.review-card p{font-size:14.5px;color:var(--ink-700);line-height:1.8;margin-bottom:16px;}
.review-meta{margin-top:auto;font-size:12.5px;color:var(--ink-500);}

/* ---------- 下载区 ---------- */
.download-box{
  background:#fff;border:1px solid var(--line);border-radius:20px;padding:clamp(28px,4vw,48px);
  box-shadow:var(--shadow-md);text-align:center;max-width:860px;margin:0 auto;
}
.download-box h2{margin-bottom:12px;}
.download-box .lead{color:var(--ink-500);font-size:15.5px;margin-bottom:28px;}
.platform-row{display:flex;justify-content:center;gap:12px;flex-wrap:wrap;margin-top:16px;}
.platform-row .btn-ghost{height:48px;padding:0 20px;font-size:14.5px;}
.dl-info{display:flex;align-items:center;justify-content:center;gap:22px;flex-wrap:wrap;margin-top:24px;font-size:13px;color:var(--ink-500);}
.qr{
  width:120px;height:120px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2);
  display:grid;place-items:center;color:var(--ink-500);font-size:12px;text-align:center;line-height:1.6;margin:22px auto 0;
}

/* ---------- CMS 列表 ---------- */
.post-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;}
.post-card{
  background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden;
  transition:all var(--ease);display:flex;flex-direction:column;
}
.post-card:hover{border-color:rgba(27,107,242,.35);box-shadow:var(--shadow-md);transform:translateY(-4px);}
.post-thumb{position:relative;display:block;background:#EEF2F8;}
.post-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.post-thumb .badge-soft{position:absolute;left:12px;top:12px;background:rgba(255,255,255,.94);}
.post-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.post-card h3{font-size:16.5px;line-height:1.5;margin-bottom:10px;}
.post-card h3 a{color:var(--ink-900);}
.post-card h3 a:hover{color:var(--brand-600);}
.post-card h3{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:49px;}
.post-card .excerpt{
  font-size:14px;color:var(--ink-500);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;min-height:49px;
}
.post-meta{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:12.5px;color:var(--ink-500);}
.empty-state{
  text-align:center;padding:56px 20px;background:var(--surface-2);border:1px dashed var(--line);border-radius:var(--r-lg);
}
.empty-state i{font-size:30px;color:#C3CEE0;margin-bottom:14px;display:block;}
.empty-state p{color:var(--ink-500);font-size:14.5px;margin-bottom:18px;}

/* ---------- FAQ ---------- */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;}
.faq-item:last-child{margin-bottom:0;}
.faq-q{
  width:100%;min-height:60px;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 22px;background:#fff;border:0;font-size:16.5px;font-weight:600;color:var(--ink-900);
  cursor:pointer;text-align:left;transition:background var(--ease),color var(--ease);
}
.faq-q:hover{background:var(--brand-050);color:var(--brand-700);}
.faq-q i{color:var(--brand-600);font-size:14px;transition:transform 220ms cubic-bezier(.2,.6,.2,1);flex:0 0 auto;}
.faq-q[aria-expanded="true"] i{transform:rotate(180deg);}
.faq-a{padding:0 22px 20px;font-size:15px;line-height:1.85;color:var(--ink-700);display:none;}
.faq-a.open{display:block;}

/* ---------- CTA ---------- */
.cta-band{
  background:var(--brand-050);border-radius:20px;padding:clamp(26px,3.4vw,42px);
  display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(20px,1.2vw + 15px,26px);margin-bottom:8px;}
.cta-band p{margin:0;color:var(--ink-500);font-size:15px;}

/* ---------- 页脚 ---------- */
.site-footer{background:#EEF3FA;border-top:1px solid var(--line);margin-top:clamp(56px,7vw,96px);}
.footer-top{padding:clamp(44px,5vw,66px) 0 36px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1.4fr;gap:32px;}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.8;margin-bottom:14px;}
.footer-brand .contact{font-size:13.5px;color:var(--ink-500);line-height:2;}
.social-row{display:flex;gap:10px;margin-top:16px;}
.social-row a{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:grid;place-items:center;color:var(--ink-500);font-size:14px;transition:all var(--ease);
}
.social-row a:hover{border-color:var(--brand-600);color:var(--brand-600);}
.footer-col h4{font-size:15px;font-weight:600;margin-bottom:16px;}
.footer-col li{margin-bottom:11px;}
.footer-col a{font-size:14px;color:var(--ink-500);}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  display:inline-flex;align-items:center;height:30px;padding:0 12px;border-radius:var(--r-pill);
  background:#fff;border:1px solid var(--line);font-size:12.5px;color:var(--ink-500);
}
.tag-cloud a:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.footer-bottom{background:#E4EBF6;padding:16px 0;}
.footer-bottom .inner{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--ink-500);}
.footer-bottom a{font-size:13px;color:var(--ink-500);}
.footer-bottom a:hover{color:var(--brand-600);}

/* ---------- 响应式 ---------- */
@media (max-width:1199.98px){
  .post-grid{grid-template-columns:repeat(2,1fr);}
  .review-grid{grid-template-columns:repeat(2,1fr);}
  .review-card:nth-child(even){transform:translateY(20px);}
}
@media (max-width:991.98px){
  .nav-search{display:none;}
  .nav-links{display:none;}
  .nav-toggle{display:inline-flex;}
  .hero-inner{grid-template-columns:1fr;gap:36px;}
  .hero-visual{order:2;}
  .value-grid{grid-template-columns:1fr;}
  .value-item + .value-item{border-left:0;border-top:1px solid var(--line);}
  .req-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:28px;}
  .carousel-control-x.prev{left:8px;}
  .carousel-control-x.next{right:8px;}
}
@media (max-width:767.98px){
  .post-grid{grid-template-columns:1fr;}
  .review-grid{grid-template-columns:1fr;}
  .review-card:nth-child(even){transform:none;}
  .review-card:nth-child(even):hover{transform:translateY(-4px);}
  .hero-cta{flex-direction:column;align-items:stretch;}
  .hero-cta .btn-x{width:100%;}
  .platform-row{flex-direction:column;}
  .platform-row .btn-x{width:100%;}
  .carousel-control-x{width:36px;height:36px;font-size:14px;}
  .shot-caption{padding:16px 18px;}
  .req-wrap{padding:20px;}
}
@media (max-width:575.98px){
  .footer-grid{grid-template-columns:1fr;}
  .brand-text{font-size:15.5px;}
  .cta-band{flex-direction:column;align-items:flex-start;}
  .cta-band .btn-x{width:100%;}
}

/* roulang page: article */
:root{
  --brand-600:#1B6BF2;
  --brand-700:#1257CE;
  --brand-050:#EAF1FF;
  --accent-500:#FF7A2F;
  --accent-600:#E9651B;
  --teal-500:#12A594;
  --ink-900:#16202E;
  --ink-700:#2B3A4E;
  --ink-500:#5C6E86;
  --line:#E4EAF3;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --surface-2:#F8FAFD;
  --footer-bg:#EEF3FA;
  --footer-bar:#E4EBF6;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-sm:0 6px 18px rgba(18,42,84,.06);
  --shadow-md:0 14px 34px rgba(18,42,84,.10);
  --shadow-focus:0 0 0 4px rgba(27,107,242,.18);
  --ease:200ms cubic-bezier(.2,.6,.2,1);
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink-700);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.85;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-700);}
button,input{font-family:inherit;}
h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;line-height:1.3;}
p{margin:0 0 1em;}
ul,ol{margin:0;padding:0;list-style:none;}
:focus-visible{outline:none;box-shadow:var(--shadow-focus);border-radius:var(--r-sm);}
.container{max-width:1200px;margin:0 auto;padding:0 20px;width:100%;}
@media (min-width:992px){.container{padding:0 32px;}}
@media (min-width:1400px){.container{max-width:1320px;}}

/* 顶部导航 */
.site-header{
  position:sticky;top:0;z-index:1000;background:#fff;
  border-bottom:1px solid var(--line);
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);}
.header-inner{
  min-height:76px;display:flex;align-items:center;gap:24px;flex-wrap:nowrap;
}
.brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.brand-mark{
  width:36px;height:36px;border-radius:11px;background:var(--brand-600);color:#fff;
  display:flex;align-items:center;justify-content:center;font-size:17px;
  box-shadow:0 6px 14px rgba(27,107,242,.28);
}
.brand-text{font-size:20px;font-weight:700;color:var(--ink-900);white-space:nowrap;line-height:1.2;}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;flex:0 0 auto;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;background:var(--brand-600);
  border-radius:2px;transition:width var(--ease);
}
.nav-links a:hover{color:var(--brand-600);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--brand-600);font-weight:600;}
.nav-links a.active::after{width:100%;}
.search-box{
  position:relative;display:flex;align-items:center;flex:1 1 auto;max-width:520px;min-width:200px;
  height:48px;background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:4px 4px 4px 44px;transition:border-color var(--ease),box-shadow var(--ease);
}
.search-box:focus-within{border-color:var(--brand-600);box-shadow:var(--shadow-focus);}
.search-box .search-icon{position:absolute;left:18px;color:var(--ink-500);font-size:15px;}
.search-box input{
  flex:1;border:0;background:transparent;outline:none;font-size:15px;color:var(--ink-900);
  height:40px;min-width:0;
}
.search-box input::placeholder{color:var(--ink-500);}
.search-box button{
  height:40px;padding:0 22px;border:0;border-radius:var(--r-pill);background:var(--brand-600);
  color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background var(--ease),transform var(--ease);
}
.search-box button:hover{background:var(--brand-700);}
.search-box button:active{transform:scale(.98);}
.menu-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;
  color:var(--ink-700);font-size:18px;cursor:pointer;flex:0 0 auto;transition:border-color var(--ease),color var(--ease);
}
.menu-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}
.mobile-drawer{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 20px 24px;}
.mobile-drawer.open{display:block;}
.drawer-search{display:flex;gap:8px;margin-bottom:14px;}
.drawer-search input{flex:1;height:48px;border:1px solid var(--line);border-radius:12px;padding:0 14px;outline:none;font-size:15px;min-width:0;}
.drawer-search input:focus{border-color:var(--brand-600);box-shadow:var(--shadow-focus);}
.drawer-search button{height:48px;padding:0 18px;border:0;border-radius:12px;background:var(--brand-600);color:#fff;font-weight:600;}
.drawer-title{font-size:15px;font-weight:600;color:var(--ink-900);margin:10px 0 6px;}
.drawer-list a{
  display:flex;align-items:center;justify-content:space-between;min-height:48px;
  font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line);
}
.drawer-list a:hover{color:var(--brand-600);}
.drawer-list a.active{color:var(--brand-600);font-weight:600;}
@media (max-width:1199px){
  .nav-links{gap:18px;}
  .brand-text{font-size:18px;}
}
@media (max-width:991px){
  .search-box,.nav-links{display:none;}
  .menu-toggle{display:flex;align-items:center;justify-content:center;margin-left:auto;}
  .header-inner{min-height:68px;}
}

/* 面包屑 */
.breadcrumb-wrap{padding:26px 0 0;}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--ink-500);}
.crumbs a{color:var(--ink-500);}
.crumbs a:hover{color:var(--brand-600);}
.crumbs i{font-size:10px;color:#B9C4D4;}
.crumbs .current{color:var(--ink-900);max-width:100%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}

/* 文章头 */
.article-hero{padding:22px 0 34px;}
.article-hero h1{
  font-size:clamp(26px,2vw + 16px,42px);line-height:1.28;font-weight:700;margin-bottom:18px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;font-size:14px;color:var(--ink-500);}
.badge-pill{
  display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:600;
}
.meta-item{display:inline-flex;align-items:center;gap:6px;}
.share-row{display:flex;align-items:center;gap:8px;margin-left:auto;}
.share-row a{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink-500);font-size:14px;
}
.share-row a:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.hero-lead{
  margin-top:18px;font-size:15.5px;color:var(--ink-500);background:var(--surface);
  border:1px solid var(--line);border-radius:var(--r-md);padding:16px 20px;
}
.hero-cover{margin-top:22px;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow-md);background:#EEF2F8;}
.hero-cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}

/* 主体布局 */
.layout{padding-bottom:clamp(48px,6vw,88px);}
.layout-grid{display:grid;grid-template-columns:minmax(0,1fr);gap:32px;}
@media (min-width:992px){
  .layout-grid{grid-template-columns:minmax(0,8fr) minmax(0,4fr);gap:40px;}
}
.article-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:clamp(20px,3vw,40px);box-shadow:var(--shadow-sm);
}

/* 正文排版 */
.article-content{font-size:17px;line-height:1.9;color:var(--ink-700);max-width:820px;}
.article-content > * + *{margin-top:1.15em;}
.article-content p{margin:0;}
.article-content h2{
  font-size:22px;line-height:1.4;font-weight:700;color:var(--ink-900);
  padding-left:14px;border-left:3px solid var(--brand-600);
  margin-top:32px;margin-bottom:16px;
}
.article-content h3{font-size:19px;font-weight:600;color:var(--ink-900);margin-top:26px;margin-bottom:12px;}
.article-content h4{font-size:17px;font-weight:600;color:var(--ink-900);margin-top:22px;margin-bottom:10px;}
.article-content ul,.article-content ol{padding-left:1.4em;margin:0;}
.article-content ul li{list-style:disc;margin-bottom:6px;}
.article-content ol li{list-style:decimal;margin-bottom:6px;}
.article-content blockquote{
  margin:0;background:var(--surface-2);border-left:4px solid var(--brand-600);
  border-radius:0 12px 12px 0;padding:14px 20px;color:var(--ink-700);font-size:16px;
}
.article-content img{border-radius:14px;margin:0 auto;background:#EEF2F8;}
.article-content figure{margin:0;}
.article-content figcaption{font-size:13px;color:var(--ink-500);text-align:center;margin-top:8px;}
.article-content table{width:100%;border-collapse:collapse;font-size:15px;}
.article-content .table-scroll{overflow-x:auto;border:1px solid var(--line);border-radius:12px;}
.article-content th,.article-content td{padding:12px 14px;border-bottom:1px solid var(--line);text-align:left;white-space:nowrap;}
.article-content thead th{background:var(--surface-2);color:var(--ink-900);font-weight:600;}
.article-content tbody tr:nth-child(even){background:#FBFCFE;}
.article-content pre{
  background:#F3F6FB;border-radius:10px;padding:16px 18px;overflow-x:auto;
  font-family:"SFMono-Regular",Consolas,"Liberation Mono",Menlo,monospace;font-size:14px;line-height:1.7;color:var(--ink-900);
}
.article-content code{
  background:#F3F6FB;border-radius:6px;padding:2px 6px;
  font-family:"SFMono-Regular",Consolas,Menlo,monospace;font-size:14px;color:var(--brand-700);
}
.article-content pre code{background:none;padding:0;color:inherit;}
.tip-box{
  display:flex;gap:12px;background:var(--brand-050);border-radius:var(--r-md);
  padding:16px 20px;font-size:15.5px;color:var(--ink-700);align-items:flex-start;
}
.tip-box i{color:var(--brand-600);font-size:17px;margin-top:4px;}

/* 空态 */
.empty-state{
  text-align:center;padding:56px 20px;background:var(--surface-2);border-radius:var(--r-lg);
  border:1px dashed var(--line);
}
.empty-state i{font-size:36px;color:#B9C4D4;}
.empty-state p{margin:16px 0 20px;color:var(--ink-500);font-size:15.5px;}

/* 标签 / 上下篇 */
.tag-block{margin-top:32px;padding-top:24px;border-top:1px solid var(--line);}
.tag-block h3{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:12px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag-cloud a{
  display:inline-flex;align-items:center;height:30px;padding:0 14px;border-radius:var(--r-pill);
  background:var(--surface-2);border:1px solid var(--line);color:var(--ink-700);font-size:13px;font-weight:600;
}
.tag-cloud a:hover{background:var(--brand-050);border-color:rgba(27,107,242,.28);color:var(--brand-700);}
.post-nav{display:grid;grid-template-columns:1fr;gap:16px;margin-top:32px;}
@media (min-width:768px){.post-nav{grid-template-columns:1fr 1fr;}}
.post-nav a{
  display:flex;align-items:center;gap:14px;background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px 20px;color:var(--ink-900);box-shadow:var(--shadow-sm);
}
.post-nav a:hover{border-color:rgba(27,107,242,.28);box-shadow:var(--shadow-md);transform:translateY(-4px);color:var(--brand-700);}
.post-nav i{color:var(--brand-600);font-size:16px;}
.post-nav span{font-size:15px;font-weight:600;line-height:1.5;}
.post-nav small{display:block;font-size:12.5px;color:var(--ink-500);font-weight:400;margin-bottom:2px;}

/* 侧栏 */
.sidebar{display:flex;flex-direction:column;gap:22px;}
@media (min-width:992px){
  .sidebar{position:sticky;top:96px;}
}
.side-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:16px;font-weight:600;margin-bottom:16px;display:flex;align-items:center;gap:8px;}
.side-card h3 i{color:var(--brand-600);font-size:15px;}
.toc-list li{border-bottom:1px dashed var(--line);}
.toc-list li:last-child{border-bottom:0;}
.toc-list a{display:block;padding:9px 0;font-size:14.5px;color:var(--ink-700);}
.toc-list a:hover{color:var(--brand-600);}
.rec-list li + li{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);}
.rec-item{display:flex;gap:12px;align-items:flex-start;}
.rec-item img{
  width:88px;height:62px;border-radius:12px;object-fit:cover;background:#EEF2F8;flex:0 0 auto;
}
.rec-item h4{
  font-size:14.5px;font-weight:600;line-height:1.55;color:var(--ink-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.rec-item:hover h4{color:var(--brand-600);}
.rec-item .rec-meta{font-size:12.5px;color:var(--ink-500);margin-top:6px;}
.side-cta{
  background:linear-gradient(180deg,#FFFFFF 0%,var(--brand-050) 100%);
  border:1px solid rgba(27,107,242,.18);border-radius:var(--r-lg);padding:22px;text-align:center;
}
.side-cta h3{font-size:16px;font-weight:600;margin-bottom:10px;}
.side-cta p{font-size:14px;color:var(--ink-500);margin-bottom:16px;}

/* 按钮 */
.btn-base{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  border-radius:14px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease),transform var(--ease),box-shadow var(--ease);
}
.btn-download{background:var(--accent-500);color:#fff;height:54px;padding:0 30px;font-size:16px;box-shadow:0 10px 22px rgba(255,122,47,.24);}
.btn-download:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-download:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14);}
.btn-primary{background:var(--brand-600);color:#fff;height:48px;padding:0 24px;font-size:15px;}
.btn-primary:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-700);height:48px;padding:0 24px;font-size:15px;}
.btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.btn-ghost:active{transform:scale(.99);}
.btn-line{
  display:inline-flex;align-items:center;gap:8px;color:var(--brand-600);font-size:14.5px;font-weight:600;
}
.btn-line i{transition:transform var(--ease);}
.btn-line:hover i{transform:translateX(4px);}

/* 相关推荐 */
.related-section{padding:0 0 clamp(48px,6vw,80px);}
.section-head{margin-bottom:28px;}
.section-head h2{font-size:clamp(23px,1.6vw + 16px,32px);}
.section-head p{color:var(--ink-500);font-size:15px;margin:10px 0 0;}
.card-grid{display:grid;grid-template-columns:1fr;gap:24px;}
@media (min-width:768px){.card-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:1200px){.card-grid{grid-template-columns:repeat(3,1fr);}}
.post-card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  display:flex;flex-direction:column;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(27,107,242,.28);}
.post-card .thumb{position:relative;background:#EEF2F8;}
.post-card .thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;}
.thumb-badge{
  position:absolute;left:14px;top:14px;height:26px;padding:0 12px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.92);color:var(--brand-700);font-size:12.5px;font-weight:600;
  display:inline-flex;align-items:center;
}
.post-card .card-body{padding:20px;display:flex;flex-direction:column;flex:1;}
.post-card h3{
  font-size:17px;font-weight:600;line-height:1.5;margin-bottom:10px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .excerpt{
  font-size:14.5px;color:var(--ink-500);line-height:1.75;margin-bottom:16px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--ink-500);}
.post-card .card-foot .more{color:var(--brand-600);font-weight:600;}

/* 联系 CTA */
.cta-band{
  background:var(--brand-050);border-radius:20px;padding:clamp(28px,4vw,44px);
  display:flex;flex-direction:column;gap:20px;align-items:flex-start;
}
@media (min-width:768px){.cta-band{flex-direction:row;align-items:center;justify-content:space-between;}}
.cta-band h2{font-size:clamp(21px,1.4vw + 14px,28px);margin-bottom:10px;}
.cta-band p{color:var(--ink-500);font-size:15px;margin:0;}

/* 页脚 */
.site-footer{background:var(--footer-bg);border-top:1px solid var(--line);margin-top:20px;}
.footer-top{padding:clamp(44px,5vw,64px) 0 32px;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:30px;}
@media (min-width:576px){.footer-grid{grid-template-columns:repeat(2,1fr);}}
@media (min-width:992px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr 1fr;gap:26px;}}
.footer-brand .brand{margin-bottom:14px;}
.footer-brand p{font-size:14px;color:var(--ink-500);line-height:1.8;max-width:320px;}
.footer-brand .contact{font-size:13.5px;color:var(--ink-500);line-height:1.9;margin-top:12px;}
.social-row{display:flex;gap:10px;margin-top:16px;}
.social-row a{
  width:36px;height:36px;border-radius:50%;border:1px solid #CFDAEA;background:#fff;
  display:flex;align-items:center;justify-content:center;color:var(--ink-500);font-size:14px;
}
.social-row a:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.footer-col h4{font-size:15px;font-weight:600;color:var(--ink-900);margin-bottom:14px;}
.footer-col li{margin-bottom:10px;}
.footer-col a{font-size:14px;color:var(--ink-500);}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;}
.kw-tags{display:flex;flex-wrap:wrap;gap:8px;}
.kw-tags a{
  font-size:12.5px;padding:6px 12px;border-radius:var(--r-pill);background:#fff;
  border:1px solid #D8E2EF;color:var(--ink-500);
}
.kw-tags a:hover{color:var(--brand-700);border-color:rgba(27,107,242,.32);background:var(--brand-050);}
.footer-bottom{background:var(--footer-bar);padding:16px 0;font-size:13px;color:var(--ink-500);}
.footer-bottom .inner{display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between;align-items:center;}
.footer-bottom a{color:var(--ink-500);}
.footer-bottom a:hover{color:var(--brand-600);}

/* roulang page: category1 */
:root{
  --brand-600:#1B6BF2;
  --brand-700:#1257CE;
  --brand-050:#EAF1FF;
  --accent-500:#FF7A2F;
  --accent-600:#E9651B;
  --teal-500:#12A594;
  --ink-900:#16202E;
  --ink-700:#2B3A4E;
  --ink-500:#5C6E86;
  --line:#E4EAF3;
  --bg:#F5F8FC;
  --surface:#FFFFFF;
  --surface-2:#F8FAFD;
  --r-sm:10px;
  --r-md:14px;
  --r-lg:18px;
  --r-pill:999px;
  --shadow-sm:0 6px 18px rgba(18,42,84,.06);
  --shadow-md:0 14px 34px rgba(18,42,84,.10);
  --shadow-focus:0 0 0 4px rgba(27,107,242,.18);
  --ease:200ms cubic-bezier(.2,.6,.2,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
}
*{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--ink-700);
  background:var(--bg);
}
img{max-width:100%;display:block;background:#EEF2F8;}
a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background-color var(--ease),border-color var(--ease);}
a:hover{color:var(--brand-700);}
h1,h2,h3,h4{margin:0;color:var(--ink-900);font-weight:700;}
h1{font-size:clamp(30px,2.6vw + 20px,50px);line-height:1.22;}
h2{font-size:clamp(23px,1.6vw + 16px,34px);line-height:1.3;}
h3{font-size:20px;line-height:1.4;font-weight:600;}
h4{font-size:17px;line-height:1.5;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
button{font-family:inherit;}
:focus-visible{outline:none;box-shadow:var(--shadow-focus);border-radius:var(--r-sm);}
.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding-left:20px;
  padding-right:20px;
}
@media (min-width:1400px){.container{max-width:1320px;}}
.section{padding-block:clamp(56px,7vw,100px);}
.section-head{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;margin-bottom:34px;flex-wrap:wrap;}
.section-head p{color:var(--ink-500);font-size:15px;margin-top:8px;max-width:720px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand-700);
  background:var(--brand-050);border-radius:var(--r-pill);
  padding:5px 14px;margin-bottom:16px;
}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-600);}
.link-arrow i{transition:transform var(--ease);}
.link-arrow:hover i{transform:translateX(4px);}

/* ============ 导航 ============ */
.site-header{
  position:sticky;top:0;z-index:1030;
  background:var(--surface);
  border-bottom:1px solid transparent;
  transition:box-shadow var(--ease),border-color var(--ease);
}
.site-header.is-scrolled{box-shadow:var(--shadow-sm);border-bottom-color:var(--line);}
.nav-inner{display:flex;align-items:center;gap:24px;height:76px;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.brand-mark{
  width:38px;height:38px;border-radius:12px;
  background:var(--brand-600);color:#fff;
  display:grid;place-items:center;font-size:17px;
  box-shadow:0 6px 14px rgba(27,107,242,.28);
}
.brand-text{font-size:18px;font-weight:700;color:var(--ink-900);letter-spacing:0;white-space:nowrap;}
.brand:hover .brand-text{color:var(--brand-700);}
.nav-search{
  position:relative;display:flex;align-items:center;
  flex:1 1 auto;max-width:540px;height:48px;
  border:1px solid var(--line);border-radius:var(--r-pill);
  background:var(--surface-2);padding-left:44px;
  transition:border-color var(--ease),box-shadow var(--ease),background-color var(--ease);
}
.nav-search:focus-within{border-color:var(--brand-600);box-shadow:var(--shadow-focus);background:#fff;}
.nav-search .search-icon{position:absolute;left:18px;font-size:15px;color:var(--ink-500);}
.nav-search input{
  flex:1;height:100%;border:0;background:transparent;
  font-size:15px;color:var(--ink-900);outline:none;min-width:0;
}
.nav-search input::placeholder{color:var(--ink-500);}
.search-btn{
  height:40px;margin-right:4px;padding:0 20px;
  border:0;border-radius:var(--r-pill);
  background:var(--brand-600);color:#fff;
  font-size:14px;font-weight:600;cursor:pointer;
  transition:background-color var(--ease),transform var(--ease);
}
.search-btn:hover{background:var(--brand-700);}
.search-btn:active{transform:translateY(1px);}
.nav-links{display:flex;align-items:center;gap:26px;margin-left:auto;}
.nav-links a{
  position:relative;font-size:15px;color:var(--ink-700);
  padding:6px 0;white-space:nowrap;
}
.nav-links a::after{
  content:"";position:absolute;left:0;bottom:0;height:2px;width:0;
  background:var(--brand-600);border-radius:2px;transition:width var(--ease);
}
.nav-links a:hover{color:var(--brand-600);}
.nav-links a:hover::after{width:100%;}
.nav-links a.active{color:var(--brand-600);font-weight:600;}
.nav-links a.active::after{width:100%;}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--line);
  background:#fff;border-radius:var(--r-sm);color:var(--ink-700);
  font-size:17px;cursor:pointer;transition:var(--ease);
}
.nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.hot-row{display:flex;align-items:center;gap:8px;padding:0 20px 12px;max-width:1200px;margin:0 auto;flex-wrap:wrap;}
@media (min-width:1400px){.hot-row{max-width:1320px;}}
.hot-row span{font-size:13px;color:var(--ink-500);}
.hot-row a{
  font-size:13px;color:var(--ink-700);background:var(--surface-2);
  border:1px solid var(--line);border-radius:var(--r-pill);
  padding:3px 12px;transition:var(--ease);
}
.hot-row a:hover{background:var(--brand-050);border-color:var(--brand-050);color:var(--brand-700);}
.mobile-panel{display:none;border-top:1px solid var(--line);background:#fff;padding:16px 20px 20px;}
.mobile-panel.open{display:block;}
.mobile-panel .mobile-search{
  position:relative;display:flex;align-items:center;height:48px;
  border:1px solid var(--line);border-radius:var(--r-md);
  background:var(--surface-2);padding-left:42px;margin-bottom:14px;
}
.mobile-panel .mobile-search i{position:absolute;left:16px;color:var(--ink-500);}
.mobile-panel .mobile-search input{flex:1;border:0;background:transparent;height:100%;outline:none;font-size:15px;min-width:0;}
.mobile-links a{
  display:flex;align-items:center;justify-content:space-between;
  min-height:48px;font-size:15px;color:var(--ink-700);
  border-bottom:1px solid var(--line);
}
.mobile-links a.active{color:var(--brand-600);font-weight:600;}

/* ============ 页头 ============ */
.page-hero{
  position:relative;overflow:hidden;
  background-color:var(--surface);
  background-image:url('/assets/images/backpic/back-1.webp');
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
  padding:clamp(32px,4vw,52px) 0 clamp(48px,6vw,76px);
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(255,255,255,.95),rgba(245,248,252,.93));
}
.page-hero .container{position:relative;z-index:1;}
.breadcrumb-nav{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-500);margin-bottom:22px;flex-wrap:wrap;}
.breadcrumb-nav a{color:var(--ink-500);}
.breadcrumb-nav a:hover{color:var(--brand-600);}
.breadcrumb-nav .sep{color:var(--line);}
.breadcrumb-nav .current{color:var(--ink-900);font-weight:600;}
.hero-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center;}
.hero-lead{font-size:17px;color:var(--ink-700);margin-top:18px;max-width:560px;}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.fact-pill{
  display:inline-flex;align-items:center;gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--r-pill);
  padding:7px 15px;font-size:13px;font-weight:600;color:var(--ink-700);
  box-shadow:var(--shadow-sm);
}
.fact-pill i{color:var(--brand-600);}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;}
.hero-thumb{
  border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow-md);border:1px solid var(--line);
  background:#EEF2F8;
}
.hero-thumb img{width:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-lg);}

/* ============ 按钮 ============ */
.btn-main,.btn-accent,.btn-ghost{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  height:52px;padding:0 30px;border-radius:var(--r-md);
  font-size:16px;font-weight:600;cursor:pointer;border:1px solid transparent;
  transition:all var(--ease);text-align:center;
}
.btn-accent{background:var(--accent-500);color:#fff;box-shadow:0 8px 20px rgba(255,122,47,.24);}
.btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-accent:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14);}
.btn-main{background:var(--brand-600);color:#fff;}
.btn-main:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
.btn-main:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14);}
.btn-ghost{background:#fff;color:var(--ink-700);border-color:var(--line);}
.btn-ghost:hover{background:var(--brand-050);border-color:var(--brand-600);color:var(--brand-700);}
.btn-ghost:active{transform:translateY(1px);}
.btn-sm{height:44px;padding:0 22px;font-size:15px;}
.btn-main[disabled],.btn-accent[disabled],.btn-ghost[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:none;}

/* ============ chip 条 ============ */
.chip-bar{
  display:flex;gap:10px;overflow-x:auto;padding:4px 4px 12px;
  scrollbar-width:thin;-webkit-overflow-scrolling:touch;
}
.chip-bar::-webkit-scrollbar{height:5px;}
.chip-bar::-webkit-scrollbar-thumb{background:var(--line);border-radius:var(--r-pill);}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;gap:7px;
  height:38px;padding:0 18px;border-radius:var(--r-pill);
  border:1px solid var(--line);background:#fff;color:var(--ink-700);
  font-size:14px;font-weight:600;cursor:pointer;transition:all var(--ease);
}
.chip:hover{background:var(--brand-050);border-color:var(--brand-050);color:var(--brand-700);}
.chip.active{background:var(--brand-600);border-color:var(--brand-600);color:#fff;}

/* ============ 图文卡列表 ============ */
.card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.media-card{
  display:grid;grid-template-columns:minmax(180px,240px) 1fr;gap:24px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);
  padding:22px;transition:all var(--ease);
}
.media-card:hover{border-color:rgba(27,107,242,.24);box-shadow:var(--shadow-md);transform:translateY(-4px);}
.media-card figure{margin:0;position:relative;border-radius:var(--r-md);overflow:hidden;background:#EEF2F8;}
.media-card img{width:100%;height:100%;aspect-ratio:16/10;object-fit:cover;border-radius:var(--r-md);}
.badge-cat{
  position:absolute;top:12px;left:12px;
  background:rgba(255,255,255,.92);color:var(--brand-700);
  font-size:12px;font-weight:600;border-radius:var(--r-pill);
  padding:4px 12px;
}
.media-body{display:flex;flex-direction:column;gap:12px;}
.media-body h3{font-size:19px;}
.media-body .desc{
  font-size:14.5px;color:var(--ink-500);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.point-list{display:flex;flex-direction:column;gap:7px;}
.point-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-700);}
.point-list li::before{
  content:"";position:absolute;left:0;top:10px;
  width:7px;height:7px;border-radius:50%;background:var(--brand-600);
}
.media-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;}
.meta-line{font-size:13px;color:var(--ink-500);}

/* ============ 行列表 ============ */
.row-list{background:var(--surface);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;}
.row-item{
  display:flex;align-items:center;gap:18px;min-height:64px;
  padding:14px 24px;border-bottom:1px solid var(--line);
  transition:background-color var(--ease);
}
.row-item:last-child{border-bottom:0;}
.row-item:hover{background:var(--brand-050);}
.row-icon{
  flex:0 0 auto;width:40px;height:40px;border-radius:12px;
  background:var(--brand-050);color:var(--brand-600);
  display:grid;place-items:center;font-size:16px;
}
.row-item:hover .row-icon{background:#fff;}
.row-text{flex:1;min-width:0;}
.row-text strong{display:block;font-size:16px;color:var(--ink-900);font-weight:600;}
.row-text span{font-size:14px;color:var(--ink-500);}
.row-arrow{color:var(--ink-500);font-size:14px;transition:transform var(--ease),color var(--ease);}
.row-item:hover .row-arrow{transform:translateX(4px);color:var(--brand-600);}

/* ============ 下载条 ============ */
.download-inline{
  background:var(--surface);border:1px solid var(--line);border-radius:20px;
  padding:clamp(24px,3vw,38px);box-shadow:var(--shadow-sm);
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
}
.download-inline h2{font-size:clamp(20px,1.4vw + 14px,26px);}
.download-inline p{font-size:14.5px;color:var(--ink-500);margin-top:8px;max-width:520px;}
.download-btns{display:flex;gap:12px;flex-wrap:wrap;}

/* ============ FAQ ============ */
.faq-wrap{max-width:860px;margin:0 auto;}
.faq-item{
  background:var(--surface);border:1px solid var(--line);
  border-radius:var(--r-md);margin-bottom:12px;overflow:hidden;
  transition:border-color var(--ease),box-shadow var(--ease);
}
.faq-item:hover{border-color:rgba(27,107,242,.24);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:60px;padding:16px 22px;background:transparent;border:0;
  text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-900);cursor:pointer;
  transition:background-color var(--ease);
}
.faq-q:hover{background:var(--surface-2);}
.faq-q i{color:var(--brand-600);font-size:14px;transition:transform var(--ease);}
.faq-q[aria-expanded="true"] i{transform:rotate(180deg);}
.faq-a{padding:0 22px 20px;font-size:15px;color:var(--ink-700);line-height:1.85;}

/* ============ CTA ============ */
.cta-band{
  background:var(--brand-050);border-radius:20px;
  padding:clamp(26px,3.4vw,44px);
  display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
}
.cta-band h2{font-size:clamp(21px,1.5vw + 15px,28px);}
.cta-band p{font-size:15px;color:var(--ink-700);margin-top:8px;}

/* ============ 页脚 ============ */
.site-footer{background:#EEF3FA;border-top:1px solid var(--line);margin-top:clamp(40px,5vw,72px);}
.footer-top{padding:clamp(40px,5vw,64px) 0 32px;}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:32px;}
.footer-brand p{font-size:14px;color:var(--ink-500);margin-top:16px;max-width:320px;}
.footer-brand .contact{font-size:13.5px;color:var(--ink-500);margin-top:14px;line-height:1.9;}
.social-row{display:flex;gap:10px;margin-top:18px;}
.social-row a{
  width:36px;height:36px;border-radius:50%;border:1px solid var(--line);
  display:grid;place-items:center;color:var(--ink-500);background:#fff;
  transition:all var(--ease);
}
.social-row a:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
.footer-col h4{font-size:15px;margin-bottom:16px;color:var(--ink-900);}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:var(--ink-500);}
.footer-col a:hover{color:var(--brand-600);text-decoration:underline;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}
.tag-cloud a{
  font-size:12.5px;font-weight:600;color:var(--brand-700);background:#fff;
  border:1px solid var(--line);border-radius:var(--r-pill);padding:4px 12px;
  transition:all var(--ease);
}
.tag-cloud a:hover{background:var(--brand-050);border-color:var(--brand-050);text-decoration:none;}
.footer-bottom{background:#E4EBF6;padding:16px 0;}
.footer-bottom-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;flex-wrap:wrap;}
.footer-bottom p{font-size:13px;color:var(--ink-500);}
.footer-brand .brand{margin-bottom:4px;}

/* ============ 响应式 ============ */
@media (max-width:1199.98px){
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;row-gap:32px;}
}
@media (max-width:991.98px){
  .nav-search,.nav-links{display:none;}
  .nav-toggle{display:inline-grid;place-items:center;margin-left:auto;}
  .hot-row{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-thumb{order:-1;}
  .card-grid{grid-template-columns:1fr;}
  .section-head{margin-bottom:26px;}
}
@media (max-width:767.98px){
  .media-card{grid-template-columns:1fr;gap:18px;padding:18px;}
  .download-inline{flex-direction:column;align-items:stretch;}
  .download-btns{flex-direction:column;}
  .download-btns .btn-main,.download-btns .btn-ghost{width:100%;}
  .hero-actions .btn-main,.hero-actions .btn-accent,.hero-actions .btn-ghost{width:100%;}
  .cta-band{flex-direction:column;align-items:stretch;}
  .cta-band .btn-main{width:100%;}
  .row-item{padding:14px 16px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:26px;}
}
@media (max-width:575.98px){
  .container{padding-left:18px;padding-right:18px;}
  .brand-text{font-size:16px;}
  .footer-grid{grid-template-columns:1fr;}
  .faq-q{font-size:15.5px;padding:14px 16px;}
  .faq-a{padding:0 16px 18px;}
}

/* roulang page: category2 */
:root{
    --brand-600:#1B6BF2;
    --brand-700:#1257CE;
    --brand-050:#EAF1FF;
    --accent-500:#FF7A2F;
    --accent-600:#E9651B;
    --teal-500:#12A594;
    --ink-900:#16202E;
    --ink-700:#2B3A4E;
    --ink-500:#5C6E86;
    --line:#E4EAF3;
    --bg:#F5F8FC;
    --surface:#FFFFFF;
    --surface-2:#F8FAFD;
    --r-sm:10px;
    --r-md:14px;
    --r-lg:18px;
    --r-pill:999px;
    --shadow-sm:0 6px 18px rgba(18,42,84,.06);
    --shadow-md:0 14px 34px rgba(18,42,84,.10);
    --shadow-focus:0 0 0 4px rgba(27,107,242,.18);
    --ease:200ms cubic-bezier(.2,.6,.2,1);
    --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei","Source Han Sans SC",system-ui,-apple-system,"Segoe UI",sans-serif;
    --font-num:"Inter","SF Pro Text",system-ui,sans-serif;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink-700);
    font-family:var(--font-cn);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;background:#EEF2F8;}
  a{color:var(--brand-600);text-decoration:none;transition:color var(--ease),background var(--ease),border-color var(--ease);}
  a:hover{color:var(--brand-700);}
  ul{margin:0;padding:0;list-style:none;}
  h1,h2,h3,h4{color:var(--ink-900);margin:0;font-weight:700;}
  h1{font-size:clamp(30px,2.6vw + 20px,50px);line-height:1.22;}
  h2{font-size:clamp(23px,1.6vw + 16px,34px);line-height:1.3;}
  h3{font-size:20px;line-height:1.4;font-weight:600;}
  h4{font-size:17px;line-height:1.5;font-weight:600;}
  p{margin:0;}
  button{font-family:inherit;}
  :focus-visible{outline:none;box-shadow:var(--shadow-focus);border-radius:var(--r-sm);}

  .container{max-width:1200px;padding-left:20px;padding-right:20px;}
  @media (min-width:1400px){.container{max-width:1320px;}}

  .section{padding-block:clamp(56px,7vw,100px);}
  .section-tight{padding-block:clamp(44px,5vw,72px);}
  .section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:clamp(28px,3vw,40px);}
  .section-head p{color:var(--ink-500);font-size:15px;max-width:640px;margin-top:10px;}
  .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;color:var(--brand-700);background:var(--brand-050);border-radius:var(--r-pill);padding:5px 14px;margin-bottom:14px;}

  /* ---------- header ---------- */
  .site-header{
    position:sticky;top:0;z-index:1040;background:var(--surface);
    border-bottom:1px solid transparent;transition:box-shadow var(--ease),border-color var(--ease);
  }
  .site-header.is-scrolled{box-shadow:var(--shadow-sm);border-bottom-color:var(--line);}
  .header-inner{display:flex;align-items:center;gap:24px;min-height:76px;}
  .brand{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand-mark{
    width:36px;height:36px;border-radius:12px;display:grid;place-items:center;
    background:linear-gradient(140deg,var(--brand-600),#4C8CFF);color:#fff;font-size:16px;
    box-shadow:0 8px 18px rgba(27,107,242,.28);
  }
  .brand-text{font-size:18px;font-weight:700;color:var(--ink-900);line-height:1.2;min-height:24px;display:inline-flex;align-items:center;}
  .brand:hover .brand-text{color:var(--brand-700);}

  .nav-search{
    position:relative;display:flex;align-items:center;flex:1 1 auto;max-width:560px;min-width:280px;
    height:48px;border:1px solid var(--line);border-radius:var(--r-pill);background:var(--surface-2);
    padding:0 4px 0 42px;transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
  }
  .nav-search:focus-within{border-color:var(--brand-600);background:#fff;box-shadow:var(--shadow-focus);}
  .nav-search .search-ico{position:absolute;left:16px;font-size:15px;color:var(--ink-500);}
  .nav-search input{
    flex:1 1 auto;border:0;background:transparent;height:100%;font-size:15px;color:var(--ink-900);min-width:0;
  }
  .nav-search input::placeholder{color:var(--ink-500);}
  .nav-search input:focus{outline:none;}
  .search-btn{
    height:40px;padding:0 22px;border:0;border-radius:var(--r-pill);background:var(--brand-600);color:#fff;
    font-size:14px;font-weight:600;transition:background var(--ease),transform var(--ease);
  }
  .search-btn:hover{background:var(--brand-700);}
  .search-btn:active{transform:scale(.97);}

  .nav-links{display:flex;align-items:center;gap:26px;flex:0 0 auto;}
  .nav-links a{
    position:relative;font-size:15px;color:var(--ink-700);padding:6px 0;white-space:nowrap;
  }
  .nav-links a::after{
    content:"";position:absolute;left:0;right:0;bottom:0;height:2px;border-radius:2px;
    background:var(--brand-600);transform:scaleX(0);transform-origin:left;transition:transform var(--ease);
  }
  .nav-links a:hover{color:var(--brand-600);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:var(--brand-600);font-weight:600;}
  .nav-links a.active::after{transform:scaleX(1);}

  .nav-toggle{
    display:none;width:44px;height:44px;border:1px solid var(--line);border-radius:12px;background:#fff;
    color:var(--ink-700);font-size:17px;align-items:center;justify-content:center;margin-left:auto;
  }
  .nav-toggle:hover{border-color:var(--brand-600);color:var(--brand-600);}

  .nav-drawer{display:none;border-top:1px solid var(--line);background:#fff;}
  .nav-drawer.open{display:block;}
  .drawer-inner{padding:16px 0 24px;}
  .drawer-search{display:flex;align-items:center;height:48px;border:1px solid var(--line);border-radius:var(--r-pill);padding:0 6px 0 40px;position:relative;background:var(--surface-2);margin-bottom:16px;}
  .drawer-search i{position:absolute;left:16px;color:var(--ink-500);}
  .drawer-search input{border:0;background:transparent;flex:1;height:100%;font-size:15px;color:var(--ink-900);min-width:0;}
  .drawer-search input:focus{outline:none;}
  .drawer-group-title{font-size:15px;font-weight:600;color:var(--ink-900);margin:12px 0 6px;}
  .drawer-list a{display:flex;align-items:center;justify-content:space-between;min-height:48px;font-size:15px;color:var(--ink-700);border-bottom:1px solid var(--line);}
  .drawer-list a:last-child{border-bottom:0;}
  .drawer-list a.active{color:var(--brand-600);font-weight:600;}

  @media (max-width:1199.98px){
    .nav-search{max-width:360px;min-width:200px;}
    .nav-links{gap:18px;}
    .nav-links a{font-size:14px;}
  }
  @media (max-width:991.98px){
    .nav-search,.nav-links{display:none;}
    .nav-toggle{display:inline-flex;}
  }

  /* ---------- buttons ---------- */
  .btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-weight:600;border-radius:13px;border:1px solid transparent;transition:all var(--ease);cursor:pointer;}
  .btn-accent{height:54px;padding:0 30px;background:var(--accent-500);color:#fff;font-size:16px;box-shadow:0 10px 22px rgba(255,122,47,.24);}
  .btn-accent:hover{background:var(--accent-600);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
  .btn-accent:active{transform:translateY(0);box-shadow:inset 0 2px 6px rgba(0,0,0,.14);}
  .btn-solid{height:48px;padding:0 26px;background:var(--brand-600);color:#fff;font-size:15px;}
  .btn-solid:hover{background:var(--brand-700);color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md);}
  .btn-solid:active{transform:translateY(0);}
  .btn-ghost{height:48px;padding:0 24px;background:#fff;border-color:var(--line);color:var(--ink-700);font-size:15px;}
  .btn-ghost:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
  .btn-ghost:active{transform:translateY(1px);}
  .btn-block-sm{width:100%;}
  .link-arrow{display:inline-flex;align-items:center;gap:8px;font-size:15px;font-weight:600;color:var(--brand-600);}
  .link-arrow i{transition:transform var(--ease);}
  .link-arrow:hover i{transform:translateX(4px);}

  /* ---------- badges ---------- */
  .pill{display:inline-flex;align-items:center;gap:6px;height:26px;padding:0 12px;border-radius:var(--r-pill);background:var(--brand-050);color:var(--brand-700);font-size:12.5px;font-weight:600;white-space:nowrap;}
  .pill-teal{background:#E4F6F3;color:#0C7C6F;}
  .pill-warm{background:#FFF1E7;color:#C9540F;}
  .stat-badges{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}
  .stat-badge{
    background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:12px 18px;box-shadow:var(--shadow-sm);
    min-width:132px;
  }
  .stat-badge .k{display:block;font-size:12.5px;color:var(--ink-500);font-weight:600;}
  .stat-badge .v{display:block;font-family:var(--font-num);font-size:19px;font-weight:700;color:var(--ink-900);font-variant-numeric:tabular-nums;margin-top:2px;}

  /* ---------- page head ---------- */
  .page-head{position:relative;overflow:hidden;background:linear-gradient(180deg,#FFFFFF 0%,var(--bg) 100%);border-bottom:1px solid var(--line);}
  .page-head-bg{
    position:absolute;inset:0;
    background-image:linear-gradient(105deg,rgba(255,255,255,.94) 0%,rgba(245,248,252,.86) 48%,rgba(255,255,255,.72) 100%),url("/assets/images/backpic/back-2.webp");
    background-size:cover;background-position:center;
    opacity:.9;pointer-events:none;
  }
  .page-head .container{position:relative;z-index:1;}
  .page-head-inner{padding-block:clamp(38px,5vw,66px);}
  .crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-500);margin-bottom:20px;}
  .crumb a{color:var(--ink-500);}
  .crumb a:hover{color:var(--brand-600);}
  .crumb .sep{color:#B9C6D8;}
  .crumb .current{color:var(--ink-900);font-weight:600;}
  .page-head h1{margin:16px 0 14px;max-width:20em;}
  .page-head .lead{font-size:16px;color:var(--ink-700);max-width:640px;}
  .head-media{position:relative;border-radius:20px;overflow:hidden;box-shadow:var(--shadow-md);background:#EEF2F8;}
  .head-media img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .head-media .tag{
    position:absolute;left:16px;top:16px;background:rgba(255,255,255,.92);color:var(--brand-700);
    font-size:12.5px;font-weight:600;border-radius:var(--r-pill);padding:5px 12px;
  }
  @media (max-width:991.98px){.head-media{margin-top:28px;}}

  /* ---------- side card ---------- */
  .side-sticky{position:sticky;top:96px;display:flex;flex-direction:column;gap:18px;}
  .side-card{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:20px;box-shadow:var(--shadow-sm);}
  .side-card h4{margin-bottom:12px;font-size:15px;}
  .anchor-list a,.rel-list a{
    display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;
    padding:6px 10px;border-radius:12px;font-size:14.5px;color:var(--ink-700);
  }
  .anchor-list a:hover,.rel-list a:hover{background:var(--brand-050);color:var(--brand-700);}
  .anchor-list a i,.rel-list a i{font-size:12px;color:#AFC0D6;transition:transform var(--ease),color var(--ease);}
  .anchor-list a:hover i,.rel-list a:hover i{color:var(--brand-600);transform:translateX(3px);}
  .rel-list a .t{display:flex;flex-direction:column;line-height:1.5;}
  .rel-list a .t small{font-size:12.5px;color:var(--ink-500);}

  @media (max-width:991.98px){
    .side-sticky{position:static;flex-direction:row;overflow-x:auto;gap:14px;padding-bottom:6px;}
    .side-card{flex:0 0 auto;min-width:270px;}
  }

  /* ---------- steps ---------- */
  .content-stack{display:flex;flex-direction:column;gap:28px;}
  .panel{background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:clamp(22px,2.6vw,34px);box-shadow:var(--shadow-sm);}
  .panel-head{margin-bottom:26px;}
  .panel-head h2{font-size:clamp(21px,1.3vw + 15px,27px);}
  .panel-head p{color:var(--ink-500);font-size:15px;margin-top:10px;max-width:660px;}

  .step-list{display:flex;flex-direction:column;gap:4px;}
  .step-item{display:flex;gap:18px;padding:18px 4px;border-bottom:1px solid var(--line);}
  .step-item:last-child{border-bottom:0;padding-bottom:0;}
  .step-num{
    flex:0 0 auto;width:32px;height:32px;border-radius:50%;background:var(--brand-600);color:#fff;
    display:grid;place-items:center;font-family:var(--font-num);font-size:14px;font-weight:700;margin-top:2px;
  }
  .step-body h3{font-size:17.5px;margin-bottom:6px;}
  .step-body p{font-size:15px;color:var(--ink-700);}
  .step-body .meta{margin-top:8px;display:flex;flex-wrap:wrap;gap:8px;}

  /* ---------- row link list ---------- */
  .row-list{display:flex;flex-direction:column;}
  .row-link{
    display:flex;align-items:center;gap:16px;min-height:56px;padding:12px 14px;border-radius:12px;
    color:var(--ink-700);border-bottom:1px solid var(--line);
  }
  .row-link:last-child{border-bottom:0;}
  .row-link:hover{background:var(--brand-050);color:var(--brand-700);}
  .row-link .ico{
    flex:0 0 auto;width:40px;height:40px;border-radius:12px;background:var(--brand-050);color:var(--brand-600);
    display:grid;place-items:center;font-size:16px;
  }
  .row-link .txt{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;line-height:1.55;}
  .row-link .txt strong{font-size:15.5px;font-weight:600;color:var(--ink-900);}
  .row-link .txt span{font-size:13.5px;color:var(--ink-500);}
  .row-link .go{flex:0 0 auto;color:#AFC0D6;font-size:14px;transition:transform var(--ease),color var(--ease);}
  .row-link:hover .go{color:var(--brand-600);transform:translateX(3px);}

  /* ---------- note ---------- */
  .note-card{
    display:flex;gap:16px;background:var(--brand-050);border-radius:var(--r-md);padding:20px 22px;
    border:1px solid #D6E4FF;
  }
  .note-card .ico{
    flex:0 0 auto;width:38px;height:38px;border-radius:11px;background:#fff;color:var(--brand-600);
    display:grid;place-items:center;font-size:16px;
  }
  .note-card h4{margin-bottom:6px;}
  .note-card p{font-size:14.5px;color:var(--ink-700);}

  /* ---------- checklist ---------- */
  .check-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;}
  .check-item{
    display:flex;align-items:flex-start;gap:12px;background:var(--surface-2);border:1px solid var(--line);
    border-radius:var(--r-md);padding:16px 18px;
  }
  .check-item i{color:var(--teal-500);font-size:15px;margin-top:4px;}
  .check-item span{font-size:14.5px;color:var(--ink-700);}
  @media (max-width:575.98px){.check-grid{grid-template-columns:1fr;}}

  /* ---------- download band ---------- */
  .download-band{
    background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-md);
    padding:clamp(26px,3.4vw,48px);text-align:center;
  }
  .download-band h2{margin-bottom:12px;}
  .download-band .sub{color:var(--ink-500);font-size:15px;max-width:600px;margin:0 auto 26px;}
  .download-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-bottom:24px;}
  .download-meta{display:flex;flex-wrap:wrap;gap:20px;justify-content:center;align-items:center;font-size:13.5px;color:var(--ink-500);}
  .download-meta .num{font-family:var(--font-num);font-variant-numeric:tabular-nums;color:var(--ink-900);font-weight:600;}
  .qr-box{
    width:120px;height:120px;border:1px solid var(--line);border-radius:12px;background:var(--surface-2);
    display:grid;place-items:center;color:var(--ink-500);font-size:12.5px;gap:6px;text-align:center;
  }
  .qr-box i{font-size:26px;color:#B9C6D8;}
  @media (max-width:767.98px){
    .download-actions{flex-direction:column;}
    .download-actions .btn{width:100%;}
    .qr-box{margin:0 auto;}
  }

  /* ---------- recommend cards ---------- */
  .card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;}
  .card-soft{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);
    overflow:hidden;box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
    height:100%;
  }
  .card-soft:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(27,107,242,.24);}
  .card-soft .cover{position:relative;background:#EEF2F8;}
  .card-soft .cover img{width:100%;aspect-ratio:16/10;object-fit:cover;}
  .card-soft .cover .pill{position:absolute;left:14px;top:14px;background:rgba(255,255,255,.92);}
  .card-soft .body{padding:20px 22px 22px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
  .card-soft h3{font-size:17px;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .card-soft p{font-size:14.5px;color:var(--ink-500);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;}
  .card-soft .foot{margin-top:auto;font-size:13px;color:var(--ink-500);display:flex;align-items:center;justify-content:space-between;}
  @media (max-width:991.98px){.card-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (max-width:767.98px){.card-grid{grid-template-columns:1fr;}}

  /* ---------- faq ---------- */
  .faq-wrap{max-width:860px;margin:0 auto;}
  .faq-item{border-bottom:1px solid var(--line);}
  .faq-item:first-child{border-top:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;min-height:60px;
    padding:16px 6px;background:transparent;border:0;text-align:left;font-size:16.5px;font-weight:600;color:var(--ink-900);
    transition:color var(--ease);
  }
  .faq-q:hover{color:var(--brand-600);}
  .faq-q .faq-icon{
    flex:0 0 auto;width:28px;height:28px;border-radius:50%;border:1px solid var(--line);color:var(--brand-600);
    display:grid;place-items:center;font-size:12px;transition:transform 220ms cubic-bezier(.2,.6,.2,1),background var(--ease),color var(--ease);
  }
  .faq-q[aria-expanded="true"] .faq-icon{transform:rotate(180deg);background:var(--brand-050);}
  .faq-a{padding:0 6px 22px;font-size:15px;color:var(--ink-700);max-width:760px;}

  /* ---------- cta band ---------- */
  .cta-band{
    background:var(--brand-050);border-radius:20px;padding:clamp(26px,3.4vw,44px);
    display:flex;align-items:center;justify-content:space-between;gap:26px;flex-wrap:wrap;
  }
  .cta-band h2{font-size:clamp(20px,1.4vw + 14px,26px);margin-bottom:8px;}
  .cta-band p{color:var(--ink-700);font-size:15px;max-width:560px;}

  /* ---------- footer ---------- */
  .site-footer{background:#EEF3FA;border-top:1px solid var(--line);margin-top:clamp(40px,5vw,72px);}
  .footer-top{padding-block:clamp(40px,5vw,64px);}
  .footer-grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr 1.25fr;gap:32px;}
  .footer-brand .brand{margin-bottom:14px;}
  .footer-brand p{font-size:14px;color:var(--ink-500);max-width:320px;}
  .footer-brand .contact{margin-top:14px;font-size:14px;color:var(--ink-500);line-height:1.9;}
  .social-row{display:flex;gap:10px;margin-top:16px;}
  .social-row a{
    width:36px;height:36px;border-radius:50%;border:1px solid #D3DEEE;display:grid;place-items:center;
    color:var(--ink-500);background:#fff;
  }
  .social-row a:hover{border-color:var(--brand-600);color:var(--brand-600);background:var(--brand-050);}
  .footer-col h4{font-size:15px;margin-bottom:14px;}
  .footer-col li{margin-bottom:9px;}
  .footer-col a{font-size:14px;color:var(--ink-500);}
  .footer-col a:hover{color:var(--brand-600);text-decoration:underline;}
  .keyword-cloud{display:flex;flex-wrap:wrap;gap:8px;}
  .keyword-cloud a{
    font-size:12.5px;font-weight:600;color:var(--ink-500);background:#fff;border:1px solid #DDE6F2;
    border-radius:var(--r-pill);padding:5px 12px;
  }
  .keyword-cloud a:hover{color:var(--brand-700);background:var(--brand-050);border-color:#C9DCFF;}
  .footer-bottom{background:#E4EBF6;border-top:1px solid var(--line);padding:16px 0;}
  .footer-bottom .inner{display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;font-size:13px;color:var(--ink-500);}
  .footer-bottom a{color:var(--ink-500);}
  .footer-bottom a:hover{color:var(--brand-600);}
  @media (max-width:991.98px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:26px;}}
  @media (max-width:575.98px){.footer-grid{grid-template-columns:1fr;}}