/* roulang page: index */
:root{
  --primary:#00BFA5;
  --primary-d:#009F8A;
  --primary-dd:#007F70;
  --accent:#6C4CF1;
  --cta:#FF9F1C;
  --cta-d:#FFB84D;
  --bg:#F7F8F5;
  --white:#FFFFFF;
  --dark:#0E1214;
  --text:#161A1D;
  --muted:#5C6670;
  --weak:#8A949C;
  --border:#E4E9E5;
  --line:#EEF2EF;
  --ok:#12B76A;
  --warn:#F79009;
  --err:#F04438;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --shadow-sm:0 1px 2px rgba(14,18,20,.04),0 8px 24px rgba(14,18,20,.06);
  --shadow-lg:0 16px 40px rgba(14,18,20,.12);
  --ease:.2s cubic-bezier(.4,0,.2,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Helvetica Neue",sans-serif;
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--r-sm)}
a{color:inherit;text-decoration:none}
button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font:inherit}
ul,ol{margin:0;padding:0;list-style:none}
h1,h2,h3,h4,h5{margin:0;line-height:1.28;font-weight:700;letter-spacing:.01em}
p{margin:0}
figure{margin:0}
:focus-visible{outline:3px solid rgba(0,191,165,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:80px 0}
.section-sm{padding:56px 0}
.section-head{max-width:760px;margin-bottom:40px}
.section-head h2{font-size:32px;font-weight:700;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:700;color:var(--primary-dd);background:rgba(0,191,165,.12);border:1px solid rgba(0,191,165,.3);border-radius:999px;padding:5px 14px;margin-bottom:16px}
.eyebrow.violet{color:#4B32C9;background:rgba(108,76,241,.1);border-color:rgba(108,76,241,.28)}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(14,18,20,.08)}
.header-inner{display:flex;align-items:center;gap:14px;height:68px}
.logo{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;
  background:linear-gradient(135deg,var(--primary) 0%,var(--accent) 100%);
  display:grid;place-items:center;color:#fff;font-weight:800;font-size:14px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(0,191,165,.32);
}
.logo-text{font-size:17px;font-weight:800;white-space:nowrap;color:var(--text)}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:10px;overflow-x:auto;scrollbar-width:none;flex:1 1 auto}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  display:inline-flex;align-items:center;white-space:nowrap;
  padding:8px 16px;border-radius:999px;
  background:#F1F4F2;color:var(--muted);
  font-size:14px;font-weight:600;border:1px solid transparent;
  transition:background var(--ease),color var(--ease),border-color var(--ease);
}
.chip:hover{background:#E8EEEB;color:var(--text)}
.chip.active{background:rgba(0,191,165,.12);color:var(--primary-dd);border-color:rgba(0,191,165,.35)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--muted);background:#F1F4F2;transition:background var(--ease),color var(--ease);
}
.icon-btn:hover{background:#E8EEEB;color:var(--text)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:12px;background:#F1F4F2;color:var(--text);place-items:center}
.nav-toggle:hover{background:#E8EEEB}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:12px;font-size:15px;font-weight:700;
  border:1px solid transparent;cursor:pointer;
  transition:transform var(--ease),box-shadow var(--ease),background var(--ease),color var(--ease),border-color var(--ease);
}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--cta);color:#161A1D;box-shadow:0 8px 20px rgba(255,159,28,.28)}
.btn-primary:hover{background:var(--cta-d);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,159,28,.34)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-secondary{background:transparent;color:var(--primary-dd);border-color:rgba(0,191,165,.55)}
.btn-secondary:hover{background:rgba(0,191,165,.08);border-color:var(--primary)}
.btn-ghost{color:var(--muted)}
.btn-ghost:hover{color:var(--text);background:#F1F4F2}
.btn-light{background:#fff;color:var(--text);border-color:var(--border)}
.btn-light:hover{border-color:var(--primary);color:var(--primary-dd)}
.btn[disabled]{background:#E7EBE8;color:var(--weak);cursor:not-allowed;box-shadow:none;transform:none}
.btn-group{display:flex;flex-wrap:wrap;gap:12px;align-items:center}

/* ============ Hero ============ */
.hero{position:relative;overflow:hidden;background:#EEF5F2;isolation:isolate}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-2;
  background:url('/assets/images/backpic/back-1.png') center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(105deg,rgba(247,248,245,.97) 0%,rgba(247,248,245,.92) 46%,rgba(238,245,242,.72) 100%);
}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center;padding:76px 0 68px}
.hero h1{font-size:40px;font-weight:800;line-height:1.2;margin-bottom:18px;letter-spacing:.01em}
.hero h1 .accent{color:var(--primary-dd)}
.hero-sub{font-size:17px;color:var(--muted);max-width:560px;margin-bottom:28px}
.hero-stats{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px;
  margin:32px 0 0;padding:20px 0 0;border-top:1px solid var(--border);
}
.stat-num{font-size:20px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.35}
.stat-num small{font-size:13px;font-weight:600;color:var(--muted)}
.stat-label{font-size:13px;color:var(--weak);margin-top:2px}
.hero-visual{position:relative;display:flex;justify-content:center}
.device-frame{
  width:min(340px,100%);background:#fff;border:1px solid var(--border);
  border-radius:30px;padding:12px;box-shadow:var(--shadow-lg);
}
.device-frame img{border-radius:22px;width:100%;aspect-ratio:9/16;object-fit:cover}
.float-card{
  position:absolute;background:#fff;border:1px solid var(--border);border-radius:14px;
  padding:12px 16px;box-shadow:var(--shadow-sm);font-size:13px;font-weight:600;color:var(--muted);
}
.float-card strong{display:block;font-size:16px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums}
.float-card.pos-a{left:-6px;top:56px}
.float-card.pos-b{right:-6px;bottom:64px}

/* ============ 价值 zigzag ============ */
.feature-row{display:grid;grid-template-columns:7fr 5fr;gap:44px;align-items:center;padding:36px 0}
.feature-row+.feature-row{border-top:1px solid var(--line)}
.feature-row.reverse{grid-template-columns:5fr 7fr}
.feature-row.reverse .feature-copy{order:2}
.feature-row.reverse .feature-media{order:1}
.feature-icon{
  width:48px;height:48px;border-radius:14px;display:grid;place-items:center;
  background:rgba(0,191,165,.12);color:var(--primary-dd);font-size:20px;margin-bottom:16px;
}
.feature-icon.violet{background:rgba(108,76,241,.12);color:#4B32C9}
.feature-icon.amber{background:rgba(255,159,28,.16);color:#B46900}
.feature-copy h3{font-size:24px;margin-bottom:12px}
.feature-copy p{color:var(--muted)}
.feature-list{margin-top:18px;display:grid;gap:10px}
.feature-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;color:var(--muted)}
.feature-list li::before{
  content:"";flex:0 0 auto;width:18px;height:18px;margin-top:5px;border-radius:6px;
  background:rgba(0,191,165,.16);
  box-shadow:inset 0 0 0 2px rgba(0,191,165,.5);
}
.feature-media img{width:100%;aspect-ratio:4/3;object-fit:cover;border:1px solid var(--border);box-shadow:var(--shadow-sm)}

/* ============ 截图轮播 ============ */
.shots-wrap{position:relative}
.shots{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 4px 20px;scrollbar-width:none;
}
.shots::-webkit-scrollbar{display:none}
.shot{
  flex:0 0 320px;scroll-snap-align:start;background:#fff;border:1px solid var(--border);
  border-radius:var(--r-md);padding:16px;box-shadow:var(--shadow-sm);
  transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
}
.shot:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(0,191,165,.35)}
.shot img{width:100%;aspect-ratio:3/4;object-fit:cover;margin-bottom:14px}
.shot h4{font-size:18px;font-weight:700;margin:10px 0 6px}
.shot p{font-size:14px;color:var(--muted);line-height:1.7}
.tag{
  display:inline-block;padding:4px 12px;border-radius:999px;font-size:12px;font-weight:700;
  background:rgba(0,191,165,.12);color:var(--primary-dd);
}
.tag.violet{background:rgba(108,76,241,.12);color:#4B32C9}
.tag.amber{background:rgba(255,159,28,.18);color:#9A5B00}
.carousel-nav{display:flex;gap:10px;justify-content:flex-end;margin-bottom:18px}

/* ============ 系统要求 ============ */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.req-card{background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:28px;box-shadow:var(--shadow-sm)}
.req-card h3{font-size:20px;margin-bottom:6px;display:flex;align-items:center;gap:10px}
.req-card .req-note{font-size:14px;color:var(--weak);margin-bottom:18px}
.req-row{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px}
.req-row:last-child{border-bottom:0}
.req-row span:first-child{color:var(--muted)}
.req-row span:last-child{font-weight:600;font-variant-numeric:tabular-nums;text-align:right}
.req-card.recommend{border-color:rgba(0,191,165,.4);background:linear-gradient(180deg,rgba(0,191,165,.06),rgba(255,255,255,1) 42%)}

/* ============ 评价墙 ============ */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.review-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);padding:22px;
  box-shadow:var(--shadow-sm);transition:transform var(--ease),box-shadow var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.review-card:nth-child(2){transform:translateY(18px)}
.review-card:nth-child(2):hover{transform:translateY(14px)}
.review-card:nth-child(5){transform:translateY(18px)}
.review-card:nth-child(5):hover{transform:translateY(14px)}
.stars{color:var(--cta);font-size:15px;letter-spacing:2px;font-weight:800}
.review-top{display:flex;align-items:center;gap:12px;margin-bottom:14px}
.avatar{
  width:40px;height:40px;border-radius:12px;object-fit:cover;flex:0 0 auto;border:1px solid var(--border);
}
.review-name{font-size:15px;font-weight:700}
.review-meta{font-size:13px;color:var(--weak)}
.review-text{font-size:14.5px;color:var(--muted);line-height:1.75}

/* ============ 下载区 ============ */
.download-panel{
  background:linear-gradient(120deg,#0E1214 0%,#123B36 58%,#241A4D 100%);
  border-radius:var(--r-lg);padding:40px;color:#F7F8F5;position:relative;overflow:hidden;
}
.download-panel::after{
  content:"";position:absolute;right:-60px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(0,191,165,.45),transparent 68%);
}
.download-inner{position:relative;display:flex;flex-wrap:wrap;gap:24px;align-items:center;justify-content:space-between}
.download-inner h3{font-size:24px;color:#fff;margin-bottom:8px}
.download-inner p{color:rgba(247,248,245,.72);font-size:15px;max-width:520px}
.checksum{margin-top:14px;font-size:13px;color:rgba(247,248,245,.6);font-variant-numeric:tabular-nums}

/* ============ 最新信息 ============ */
.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.post-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);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-lg);border-color:rgba(0,191,165,.35)}
.post-cover{display:block;overflow:hidden}
.post-cover img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .4s ease}
.post-card:hover .post-cover img{transform:scale(1.04)}
.post-body{padding:20px 22px 22px;display:flex;flex-direction:column;flex:1 1 auto}
.post-body h3{font-size:18px;margin:10px 0 8px;line-height:1.45}
.post-body h3 a:hover{color:var(--primary-dd)}
.post-body p{font-size:14px;color:var(--muted);line-height:1.7;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.post-meta{margin-top:auto;padding-top:16px;font-size:13px;color:var(--weak);display:flex;gap:14px;flex-wrap:wrap}
.empty-card{
  grid-column:1/-1;border:1px dashed var(--border);background:#fff;border-radius:var(--r-md);
  padding:48px 24px;text-align:center;color:var(--muted);
}
.empty-card strong{display:block;font-size:17px;color:var(--text);margin-bottom:6px}

/* ============ FAQ ============ */
.faq-list{max-width:820px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);
  padding:0 20px;transition:border-color var(--ease),box-shadow var(--ease);
  position:relative;overflow:hidden;
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:transparent;transition:background var(--ease);
}
.faq-item[open]{border-color:rgba(0,191,165,.45);box-shadow:var(--shadow-sm)}
.faq-item[open]::before{background:var(--primary)}
.faq-item summary{
  list-style:none;cursor:pointer;min-height:56px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:16px;font-weight:600;padding:14px 0;
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";font-size:20px;font-weight:600;color:var(--primary-dd);flex:0 0 auto;line-height:1;
}
.faq-item[open] summary::after{content:"–"}
.faq-body{padding:0 0 20px;font-size:15px;color:var(--muted);line-height:1.85}

/* ============ 底部 CTA ============ */
.cta-band{position:relative;overflow:hidden;background:var(--dark);color:#F7F8F5}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;opacity:.18;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,18,20,.95),rgba(0,127,112,.55) 62%,rgba(108,76,241,.42));
}
.cta-inner{position:relative;z-index:2;text-align:center;padding:72px 0}
.cta-inner h2{font-size:32px;color:#fff;margin-bottom:14px}
.cta-inner p{color:rgba(247,248,245,.76);max-width:640px;margin:0 auto 28px;font-size:16px}
.cta-fields{display:flex;flex-wrap:wrap;gap:14px;justify-content:center;margin-top:26px;font-size:14px;color:rgba(247,248,245,.7)}
.cta-fields span{padding:6px 14px;border:1px solid rgba(247,248,245,.22);border-radius:999px}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(247,248,245,.74);padding:64px 0 0}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding-bottom:44px}
.footer-brand .logo-text{color:#fff}
.footer-brand p{font-size:14px;line-height:1.8;margin-top:16px;max-width:320px;color:rgba(247,248,245,.62)}
.footer-col h4{font-size:16px;color:#fff;font-weight:700;margin-bottom:16px}
.footer-col li+li{margin-top:10px}
.footer-col a{font-size:14px;color:rgba(247,248,245,.66);transition:color var(--ease)}
.footer-col a:hover{color:var(--primary)}
.footer-bottom{
  border-top:1px solid rgba(247,248,245,.12);padding:20px 0 26px;
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;
  font-size:13px;color:rgba(247,248,245,.5);
}
.to-top{color:rgba(247,248,245,.7);font-size:13px;font-weight:600}
.to-top:hover{color:var(--primary)}

/* ============ 移动端吸底下载 ============ */
.sticky-download{
  position:fixed;left:0;right:0;bottom:0;z-index:90;
  display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(14,18,20,.08);
  transform:translateY(110%);transition:transform var(--ease);
}
.sticky-download.is-visible{transform:translateY(0)}
.sticky-download .sticky-text{font-size:13px;color:var(--muted);line-height:1.5;flex:1 1 auto}
.sticky-download .sticky-text strong{display:block;font-size:14px;color:var(--text)}
.sticky-download .btn{flex:0 0 auto}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:960px}
  .hero h1{font-size:36px}
  .review-grid{grid-template-columns:repeat(2,1fr)}
  .review-card:nth-child(5){transform:none}
}
@media (max-width:1023px){
  .section{padding:64px 0}
  .container{max-width:720px}
  .nav-chips{display:none}
  .nav-toggle{display:grid}
  .nav-chips.is-open{
    display:flex;flex-direction:column;align-items:stretch;gap:8px;
    position:absolute;left:16px;right:16px;top:calc(100% + 8px);
    background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
    padding:14px;box-shadow:var(--shadow-lg);margin-left:0;overflow:visible;
  }
  .nav-chips.is-open .chip{justify-content:flex-start;padding:12px 16px;border-radius:12px}
  .header-inner{position:relative}
  .hero-inner{grid-template-columns:1fr;gap:36px;padding:56px 0 48px}
  .hero h1{font-size:32px}
  .hero-visual{order:-1}
  .feature-row,.feature-row.reverse{grid-template-columns:1fr;gap:24px;padding:28px 0}
  .feature-row.reverse .feature-copy,.feature-row.reverse .feature-media{order:initial}
  .req-grid{grid-template-columns:1fr}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .review-card:nth-child(2){transform:none}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
}
@media (max-width:767px){
  .container{padding:0 16px}
  .section{padding:48px 0}
  .section-head h2{font-size:24px}
  .hero h1{font-size:30px}
  .hero-sub{font-size:16px}
  .hero-stats{grid-template-columns:repeat(2,1fr);gap:14px}
  .float-card{display:none}
  .shot{flex:0 0 78%}
  .post-grid{grid-template-columns:1fr}
  .review-grid{grid-template-columns:1fr}
  .download-panel{padding:26px 20px;border-radius:var(--r-md)}
  .download-inner{flex-direction:column;align-items:flex-start}
  .btn-group{width:100%}
  .btn-group .btn{flex:1 1 auto}
  .cta-inner{padding:56px 0}
  .cta-inner h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .sticky-download{display:flex}
  body{padding-bottom:72px}
}
@media (max-width:479px){
  .hero h1{font-size:28px;line-height:1.25}
  .section-head h2{font-size:22px}
  .shot{flex:0 0 86%}
  .logo-text{font-size:15px}
  .post-body{padding:16px}
  .req-card{padding:20px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --brand:#00BFA5;
  --brand-dark:#009F8A;
  --brand-deep:#007F70;
  --violet:#6C4CF1;
  --amber:#FF9F1C;
  --amber-light:#FFB84D;
  --bg:#F7F8F5;
  --white:#FFFFFF;
  --dark:#0E1214;
  --text:#161A1D;
  --text-2:#5C6670;
  --text-3:#8A949C;
  --border:#E4E9E5;
  --line:#EEF2EF;
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 1px 2px rgba(14,18,20,.04),0 8px 24px rgba(14,18,20,.06);
  --shadow-hover:0 16px 40px rgba(14,18,20,.12);
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::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);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;line-height:1.3;color:var(--text);}
h1{font-size:40px;font-weight:800;letter-spacing:.01em;}
h2{font-size:32px;font-weight:700;}
h3{font-size:24px;font-weight:700;}
h4{font-size:20px;font-weight:600;}
p{margin:0;}
ul{margin:0;padding:0;list-style:none;}
a{color:var(--brand-deep);text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease;}
a:hover{color:var(--brand);}
img{max-width:100%;display:block;}
button{font-family:inherit;}
:focus-visible{outline:3px solid rgba(0,191,165,.55);outline-offset:2px;border-radius:6px;}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
.section{padding:80px 0;}
.section-sm{padding:56px 0;}
.section-head{max-width:760px;margin-bottom:40px;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.08em;
  color:var(--brand-deep);background:rgba(0,191,165,.12);
  border:1px solid rgba(0,191,165,.28);
  padding:6px 14px;border-radius:999px;margin-bottom:16px;
}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--brand);}
.section-head p{margin-top:14px;color:var(--text-2);font-size:16px;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(14,18,20,.08);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;
  display:inline-flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--violet) 100%);
  color:#fff;font-weight:800;font-size:16px;
  box-shadow:0 6px 16px rgba(0,191,165,.28);
}
.logo-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;}
.logo:hover .logo-text{color:var(--brand-deep);}
.nav-chips{display:flex;align-items:center;gap:8px;margin-left:8px;flex:1;overflow-x:auto;scrollbar-width:none;}
.nav-chips::-webkit-scrollbar{display:none;}
.chip{
  white-space:nowrap;font-size:14px;font-weight:600;
  color:var(--text-2);background:#F1F4F2;
  padding:8px 16px;border-radius:999px;
  border:1px solid transparent;
  transition:all .18s ease;
}
.chip:hover{background:#E8EEEB;color:var(--text);}
.chip.active{
  background:rgba(0,191,165,.12);
  color:var(--brand-deep);
  border-color:rgba(0,191,165,.35);
}
.header-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:38px;height:38px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  display:inline-flex;align-items:center;justify-content:center;
  cursor:pointer;transition:all .18s ease;
}
.icon-btn:hover{color:var(--brand-deep);border-color:rgba(0,191,165,.4);background:rgba(0,191,165,.06);}
.nav-toggle{
  display:none;width:38px;height:38px;border-radius:10px;
  border:1px solid var(--border);background:#fff;color:var(--text);
  align-items:center;justify-content:center;cursor:pointer;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-size:15px;font-weight:700;border-radius:12px;
  padding:14px 24px;border:1px solid transparent;cursor:pointer;
  transition:transform .16s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
  text-align:center;
}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px;}
.btn-primary{background:var(--amber);color:#231400;box-shadow:0 8px 20px rgba(255,159,28,.28);}
.btn-primary:hover{background:var(--amber-light);color:#231400;transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,159,28,.32);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{background:transparent;color:var(--brand-deep);border-color:rgba(0,191,165,.5);}
.btn-outline:hover{background:rgba(0,191,165,.08);color:var(--brand-deep);border-color:var(--brand);}
.btn-ghost{background:transparent;color:var(--text-2);}
.btn-ghost:hover{background:#EEF2EF;color:var(--text);}
.btn[disabled],.btn.is-disabled{background:#E9EDEA;color:var(--text-3);border-color:transparent;box-shadow:none;cursor:not-allowed;transform:none;}
.btn-group{display:flex;flex-wrap:wrap;gap:12px;align-items:center;}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  padding:72px 0 80px;
  background:
    linear-gradient(180deg,rgba(247,248,245,.92) 0%,rgba(247,248,245,.97) 60%,var(--bg) 100%),
    url("/assets/images/backpic/back-1.png") center/cover no-repeat;
}
.hero::after{
  content:"";position:absolute;right:-120px;top:-80px;width:420px;height:420px;
  background:radial-gradient(circle at center,rgba(108,76,241,.16),transparent 62%);
  pointer-events:none;
}
.hero-grid{position:relative;display:grid;grid-template-columns:1.15fr .85fr;gap:56px;align-items:center;}
.breadcrumb{font-size:14px;color:var(--text-3);margin-bottom:20px;display:flex;gap:8px;flex-wrap:wrap;}
.breadcrumb a{color:var(--text-2);}
.breadcrumb a:hover{color:var(--brand-deep);}
.hero h1{margin-bottom:18px;}
.hero h1 .hl{
  background:linear-gradient(180deg,transparent 62%,rgba(0,191,165,.28) 62%);
  padding:0 2px;
}
.hero-lead{font-size:17px;color:var(--text-2);max-width:620px;margin-bottom:24px;}
.hero-anchors{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px;}
.anchor-chip{
  font-size:14px;font-weight:600;color:var(--text-2);
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:8px 16px;transition:all .18s ease;
}
.anchor-chip:hover{color:var(--brand-deep);border-color:rgba(0,191,165,.4);background:rgba(0,191,165,.06);}
.hero-meta{display:flex;flex-wrap:wrap;gap:24px;margin-top:26px;padding-top:22px;border-top:1px dashed var(--border);}
.hero-meta .fact{display:flex;flex-direction:column;gap:2px;}
.hero-meta .fact strong{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text);}
.hero-meta .fact span{font-size:13px;color:var(--text-3);}
.hero-visual{
  position:relative;background:#fff;border:1px solid var(--border);
  border-radius:var(--radius-lg);padding:16px;box-shadow:var(--shadow);
}
.hero-visual img{border-radius:var(--radius-sm);aspect-ratio:4/3;object-fit:cover;width:100%;}
.hero-visual .tag-float{
  position:absolute;left:-16px;bottom:32px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:700;color:var(--brand-deep);
  box-shadow:var(--shadow);
}
.hero-visual .tag-float-2{
  position:absolute;right:-14px;top:28px;
  background:var(--dark);color:#F7F8F5;border-radius:999px;
  padding:8px 16px;font-size:13px;font-weight:700;
}

/* ---------- Timeline ---------- */
.timeline{position:relative;max-width:900px;margin:0 auto;padding-left:0;}
.timeline-item{
  position:relative;display:grid;grid-template-columns:64px 1fr;gap:24px;
  padding-bottom:36px;
}
.timeline-item:last-child{padding-bottom:0;}
.timeline-item::before{
  content:"";position:absolute;left:23px;top:52px;bottom:0;width:2px;
  background:linear-gradient(180deg,rgba(0,191,165,.5),rgba(0,191,165,.08));
}
.timeline-item:last-child::before{display:none;}
.step-num{
  width:48px;height:48px;border-radius:14px;
  display:flex;align-items:center;justify-content:center;
  font-size:18px;font-weight:800;font-variant-numeric:tabular-nums;
  background:rgba(0,191,165,.12);color:var(--brand-deep);
  border:1px solid rgba(0,191,165,.3);
}
.timeline-item.is-key .step-num{background:var(--amber);border-color:var(--amber);color:#231400;}
.step-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow);transition:all .2s ease;
}
.step-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(0,191,165,.28);}
.step-card h3{font-size:20px;margin-bottom:10px;}
.step-card p{color:var(--text-2);font-size:15px;}
.step-list{margin-top:14px;display:grid;gap:8px;}
.step-list li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2);}
.step-list li::before{
  content:"";position:absolute;left:0;top:9px;width:7px;height:7px;border-radius:2px;
  background:var(--brand);opacity:.75;
}
.step-media{
  margin-top:16px;border-radius:var(--radius-sm);overflow:hidden;
  border:1px solid var(--line);
}
.step-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}

/* ---------- Requirements ---------- */
.req-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;}
.req-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:28px;box-shadow:var(--shadow);
}
.req-card.recommended{border-color:rgba(0,191,165,.4);}
.req-card h3{font-size:20px;display:flex;align-items:center;gap:10px;margin-bottom:6px;}
.badge{
  font-size:12px;font-weight:700;padding:4px 12px;border-radius:999px;
  background:rgba(0,191,165,.14);color:var(--brand-deep);
}
.badge.violet{background:rgba(108,76,241,.12);color:var(--violet);}
.req-card .sub{font-size:14px;color:var(--text-3);margin-bottom:18px;}
.req-row{
  display:flex;justify-content:space-between;gap:16px;
  padding:12px 0;border-bottom:1px solid var(--line);font-size:15px;
}
.req-row:last-child{border-bottom:none;}
.req-row span:first-child{color:var(--text-3);}
.req-row span:last-child{font-weight:600;color:var(--text);font-variant-numeric:tabular-nums;text-align:right;}

/* ---------- Download ---------- */
.download-panel{
  background:var(--white);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:36px;box-shadow:var(--shadow);
  display:grid;grid-template-columns:1.1fr .9fr;gap:32px;align-items:center;
}
.download-panel h3{font-size:24px;margin-bottom:10px;}
.download-panel p{color:var(--text-2);font-size:15px;}
.verify-box{
  background:#F7F8F5;border:1px dashed var(--border);border-radius:var(--radius-sm);
  padding:18px 20px;font-size:14px;color:var(--text-2);
}
.verify-box strong{color:var(--text);font-variant-numeric:tabular-nums;}
.verify-box .line{display:flex;justify-content:space-between;gap:12px;padding:6px 0;}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto;display:grid;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.open{border-color:rgba(0,191,165,.4);box-shadow:var(--shadow);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  background:none;border:none;cursor:pointer;text-align:left;
  font-size:16px;font-weight:600;color:var(--text);
  padding:18px 20px;min-height:56px;position:relative;
}
.faq-item.open .faq-q::before{
  content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 2px 2px 0;background:var(--brand);
}
.faq-icon{
  flex-shrink:0;width:26px;height:26px;border-radius:8px;
  display:flex;align-items:center;justify-content:center;
  background:#F1F4F2;color:var(--brand-deep);font-weight:800;font-size:16px;line-height:1;
  transition:all .2s ease;
}
.faq-item.open .faq-icon{background:rgba(0,191,165,.16);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .25s ease;}
.faq-a p{padding:0 20px 20px;font-size:15px;color:var(--text-2);}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;color:#F7F8F5;
  background:
    linear-gradient(120deg,rgba(14,18,20,.94),rgba(14,18,20,.86)),
    url("/assets/images/backpic/back-3.png") center/cover no-repeat;
  border-radius:var(--radius-lg);
  padding:56px 48px;
}
.cta-band::before{
  content:"";position:absolute;left:-80px;bottom:-120px;width:360px;height:360px;
  background:radial-gradient(circle at center,rgba(0,191,165,.35),transparent 65%);
}
.cta-band::after{
  content:"";position:absolute;right:-60px;top:-100px;width:320px;height:320px;
  background:radial-gradient(circle at center,rgba(108,76,241,.32),transparent 65%);
}
.cta-inner{position:relative;display:grid;grid-template-columns:1.2fr .8fr;gap:32px;align-items:center;}
.cta-band h2{color:#fff;font-size:30px;margin-bottom:12px;}
.cta-band p{color:rgba(247,248,245,.78);font-size:15px;max-width:560px;}
.cta-facts{display:flex;flex-wrap:wrap;gap:12px;margin-top:20px;}
.cta-facts .fact{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  border-radius:999px;padding:7px 16px;font-size:13px;color:rgba(247,248,245,.85);
  font-variant-numeric:tabular-nums;
}
.cta-actions{display:flex;flex-direction:column;gap:12px;}
.cta-actions .btn-outline{color:#F7F8F5;border-color:rgba(247,248,245,.4);}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.1);color:#fff;border-color:rgba(247,248,245,.7);}

/* ---------- Footer ---------- */
.site-footer{background:var(--dark);color:#C9D1CE;margin-top:80px;padding-top:56px;}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;padding-bottom:40px;}
.footer-brand .logo{margin-bottom:16px;}
.footer-brand .logo-text{color:#F7F8F5;}
.footer-brand p{font-size:14px;line-height:1.8;color:#9AA5A1;max-width:360px;}
.footer-col h4{color:#F7F8F5;font-size:16px;margin-bottom:16px;}
.footer-col ul{display:grid;gap:10px;}
.footer-col a{font-size:14px;color:#9AA5A1;}
.footer-col a:hover{color:var(--brand);}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 28px;display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:#7E8987;
}
.footer-bottom a{color:#9AA5A1;}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- Float bar ---------- */
.float-bar{
  position:fixed;right:24px;bottom:24px;z-index:70;
  display:flex;align-items:center;gap:14px;
  background:#fff;border:1px solid var(--border);border-radius:999px;
  padding:10px 12px 10px 20px;box-shadow:var(--shadow-hover);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:all .25s ease;
}
.float-bar.show{opacity:1;visibility:visible;transform:translateY(0);}
.float-bar span{font-size:14px;font-weight:600;color:var(--text-2);}

/* ---------- Responsive ---------- */
@media (max-width:1279px){
  .container{max-width:960px;}
  h1{font-size:36px;}
  .hero-grid{gap:40px;}
}
@media (max-width:1023px){
  .container{max-width:720px;}
  .section{padding:64px 0;}
  h1{font-size:32px;}
  h2{font-size:27px;}
  .hero{padding:56px 0 64px;}
  .hero-grid{grid-template-columns:1fr;gap:32px;}
  .hero-visual{max-width:520px;}
  .download-panel{grid-template-columns:1fr;}
  .cta-inner{grid-template-columns:1fr;}
  .cta-band{padding:44px 32px;}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px;}
  .nav-chips{
    position:absolute;left:0;right:0;top:60px;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border-bottom:1px solid var(--border);
    padding:12px 16px 16px;box-shadow:0 12px 28px rgba(14,18,20,.1);
    display:none;
  }
  .nav-chips.open{display:flex;}
  .chip{border-radius:10px;padding:10px 14px;}
  .nav-toggle{display:inline-flex;}
  .header-inner{height:60px;}
  .req-grid{grid-template-columns:1fr;}
}
@media (max-width:767px){
  .container{padding:0 16px;}
  .section{padding:48px 0;}
  h1{font-size:30px;line-height:1.28;}
  h2{font-size:24px;}
  h3{font-size:20px;}
  body{font-size:16px;}
  .hero{padding:40px 0 48px;}
  .hero-lead{font-size:16px;}
  .hero-meta{gap:18px;}
  .btn{width:100%;}
  .btn-group{width:100%;}
  .btn-sm{width:auto;}
  .header-actions .btn-sm{display:none;}
  .timeline-item{grid-template-columns:44px 1fr;gap:16px;}
  .timeline-item::before{left:21px;}
  .step-num{width:44px;height:44px;border-radius:12px;font-size:16px;}
  .step-card{padding:20px;}
  .download-panel{padding:24px;}
  .cta-band{padding:36px 24px;}
  .footer-grid{grid-template-columns:1fr;gap:28px;}
  .float-bar{
    left:0;right:0;bottom:0;border-radius:0;
    padding:12px 16px;justify-content:space-between;
    border-left:none;border-right:none;border-bottom:none;
  }
  .float-bar span{display:none;}
  .float-bar .btn{width:auto;flex:1;}
}
@media (max-width:479px){
  h1{font-size:27px;}
  h2{font-size:22px;}
  .req-card{padding:20px;}
  .hero-visual{padding:12px;}
  .hero-visual .tag-float,.hero-visual .tag-float-2{display:none;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}

/* roulang page: article */
:root{
  --brand:#00BFA5;
  --brand-dark:#009F8A;
  --brand-deep:#007F70;
  --brand-soft:rgba(0,191,165,.12);
  --purple:#6C4CF1;
  --purple-soft:rgba(108,76,241,.12);
  --amber:#FF9F1C;
  --amber-light:#FFB84D;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0E1214;
  --text:#161A1D;
  --muted:#5C6670;
  --faint:#8A949C;
  --inverse:#F7F8F5;
  --line:#E4E9E5;
  --line-soft:#EEF2EF;
  --success:#12B76A;
  --warning:#F79009;
  --danger:#F04438;
  --radius-lg:20px;
  --radius:16px;
  --radius-btn:12px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(14,18,20,.04),0 8px 24px rgba(14,18,20,.06);
  --shadow-md:0 16px 40px rgba(14,18,20,.12);
  --shadow-soft:0 1px 2px rgba(14,18,20,.04);
  --gap-section:80px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none;transition:color .18s ease,background-color .18s ease,border-color .18s ease}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:700}
p{margin:0}
ul,ol{margin:0}
:focus-visible{outline:3px solid rgba(0,191,165,.45);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.section{padding:var(--gap-section) 0}
.section-tight{padding:48px 0}
.section-head{max-width:720px;margin-bottom:32px}
.section-head h2{font-size:32px;font-weight:700;letter-spacing:.01em}
.section-head p{margin-top:12px;color:var(--muted);font-size:16px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;color:var(--brand-deep);background:var(--brand-soft);border-radius:var(--radius-pill);padding:5px 14px;margin-bottom:14px}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(14px);
  -webkit-backdrop-filter:saturate(180%) blur(14px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .2s ease;
}
.site-header.is-scrolled{box-shadow:0 8px 26px rgba(14,18,20,.08)}
.header-inner{position:relative;display:flex;align-items:center;gap:18px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;font-weight:800}
.logo-mark{
  width:32px;height:32px;border-radius:10px;display:grid;place-items:center;
  color:#fff;font-size:16px;font-weight:800;
  background:linear-gradient(135deg,var(--brand),var(--purple));
  box-shadow:0 6px 16px rgba(0,191,165,.28);
}
.logo-text{font-size:17px;letter-spacing:.01em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;overflow-x:auto;scrollbar-width:none;padding:4px 2px}
.nav-chips::-webkit-scrollbar{display:none}
.chip{
  flex:0 0 auto;display:inline-flex;align-items:center;
  padding:8px 15px;border-radius:var(--radius-pill);
  font-size:14px;font-weight:600;color:var(--muted);
  background:#F1F4F2;border:1px solid transparent;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease,transform .18s ease;
}
.chip:hover{background:#E8EEEB;color:var(--text)}
.chip.active{background:var(--brand-soft);color:var(--brand-deep);border-color:rgba(0,191,165,.35)}
.header-actions{display:flex;align-items:center;gap:10px;margin-left:auto;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  color:var(--muted);background:#F1F4F2;transition:background-color .18s ease,color .18s ease;
}
.icon-btn:hover{background:#E8EEEB;color:var(--text)}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:12px;place-items:center;
  color:var(--muted);background:#F1F4F2;
}
.nav-toggle:hover{background:#E8EEEB;color:var(--text)}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius-btn);
  font-size:14px;font-weight:700;line-height:1.4;
  border:1px solid transparent;text-align:center;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn-sm{padding:10px 18px;font-size:14px}
.btn-primary{background:var(--amber);color:#1B1204;box-shadow:0 8px 20px rgba(255,159,28,.28)}
.btn-primary:hover{background:var(--amber-light);transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,159,28,.34)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-secondary{background:transparent;color:var(--brand-deep);border-color:rgba(0,191,165,.5)}
.btn-secondary:hover{background:rgba(0,191,165,.08);transform:translateY(-2px)}
.btn-ghost{background:transparent;color:var(--muted)}
.btn-ghost:hover{background:#F1F4F2;color:var(--text)}
.btn-block{width:100%}
.btn[disabled]{background:#EDF0EE;color:var(--faint);box-shadow:none;cursor:not-allowed;transform:none}

/* ---------- breadcrumb / article head ---------- */
.article-top{padding:28px 0 0}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:var(--faint)}
.breadcrumb a{color:var(--muted)}
.breadcrumb a:hover{color:var(--brand-deep)}
.breadcrumb .sep{color:#C4CCC7}
.article-head{padding:22px 0 0;max-width:840px}
.article-head h1{font-size:40px;font-weight:800;letter-spacing:.01em;line-height:1.28}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-size:14px;color:var(--muted)}
.meta-item{display:inline-flex;align-items:center;gap:6px}
.meta-divider{width:1px;height:14px;background:var(--line);display:inline-block}
.tag{
  display:inline-flex;align-items:center;padding:5px 12px;border-radius:var(--radius-pill);
  font-size:13px;font-weight:600;background:var(--brand-soft);color:var(--brand-deep);
}
.tag-purple{background:var(--purple-soft);color:#4B31C4}

/* ---------- layout ---------- */
.article-layout{
  display:grid;grid-template-columns:minmax(0,1fr) 288px;
  gap:48px;align-items:start;padding:32px 0 72px;
}
.article-main{min-width:0}
.article-body{max-width:800px;font-size:17px;line-height:1.85;color:#20272B}
.article-body>*+*{margin-top:1.05em}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  font-size:26px;font-weight:700;margin:44px 0 16px;padding-left:14px;
  border-left:4px solid var(--brand);line-height:1.4;scroll-margin-top:100px;
}
.article-body h3{font-size:21px;font-weight:700;margin:30px 0 12px;scroll-margin-top:100px}
.article-body h4{font-size:18px;font-weight:600;margin:22px 0 10px}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--brand)}
.article-body strong{font-weight:700}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.2em}
.article-body li{margin:.35em 0;line-height:1.9}
.article-body blockquote{
  margin:24px 0;padding:18px 22px;background:rgba(0,191,165,.07);
  border-left:4px solid var(--brand);border-radius:0 12px 12px 0;color:var(--muted);font-size:16px;
}
.article-body blockquote p:last-child{margin-bottom:0}
.article-body img{border-radius:12px;box-shadow:var(--shadow-sm);margin:22px 0}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:14px;color:var(--faint);text-align:center;margin-top:10px}
.article-body table{width:100%;border-collapse:collapse;font-size:15px;background:#fff}
.article-body .table-scroll{overflow-x:auto}
.article-body th,.article-body td{border:1px solid var(--line);padding:11px 14px;text-align:left}
.article-body th{background:#F1F4F2;font-weight:600;color:var(--text)}
.article-body hr{border:0;border-top:1px solid var(--line-soft);margin:32px 0}
.article-body code{background:#F1F4F2;border-radius:6px;padding:2px 6px;font-size:15px}

/* ---------- toc ---------- */
.toc{
  position:sticky;top:92px;
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px 16px;box-shadow:var(--shadow-sm);
}
.toc-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.toc-title{font-size:15px;font-weight:700;color:var(--text);letter-spacing:.02em}
.toc-toggle{
  display:none;width:34px;height:34px;border-radius:10px;place-items:center;
  background:#F1F4F2;color:var(--muted);
}
.toc-list{list-style:none;margin:12px 0 0;padding:0;max-height:60vh;overflow:auto;scrollbar-width:thin}
.toc-item a{
  display:block;padding:7px 10px;border-radius:8px;
  font-size:14px;line-height:1.5;color:var(--muted);
  border-left:2px solid transparent;
}
.toc-item.toc-h3 a{padding-left:22px;font-size:13.5px;color:var(--faint)}
.toc-item a:hover{background:#F1F4F2;color:var(--text)}
.toc-item a.is-active{color:var(--brand-deep);background:var(--brand-soft);border-left-color:var(--brand);font-weight:600}

/* ---------- empty state ---------- */
.empty-card{
  max-width:800px;border:1px dashed #CFD8D3;background:#FBFCFA;border-radius:var(--radius);
  padding:40px 28px;text-align:center;
}
.empty-card .empty-icon{
  width:54px;height:54px;border-radius:16px;margin:0 auto 16px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);
}
.empty-card h2{font-size:22px;margin-bottom:10px}
.empty-card p{color:var(--muted);font-size:15px;margin-bottom:22px}

/* ---------- related ---------- */
.related{padding:64px 0;border-top:1px solid var(--line-soft);background:#fff}
.card-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.card{
  background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:20px;box-shadow:var(--shadow-soft);
  display:flex;flex-direction:column;gap:12px;
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(0,191,165,.45)}
.card-cover{aspect-ratio:16/9;border-radius:12px;overflow:hidden;background:#EDF0EE}
.card-cover img{width:100%;height:100%;object-fit:cover;transition:transform .35s ease}
.card:hover .card-cover img{transform:scale(1.04)}
.card h3{font-size:18px;line-height:1.5;font-weight:700}
.card p{font-size:14px;color:var(--muted);line-height:1.7}
.card .card-foot{margin-top:auto;display:flex;align-items:center;justify-content:space-between;font-size:13px;color:var(--faint)}
.card-link{color:var(--brand-deep);font-weight:600}
.card-link:hover{color:var(--brand)}

/* ---------- prev / next ---------- */
.pn-nav{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;padding:0 0 72px}
.pn-link{
  display:flex;flex-direction:column;gap:6px;background:#fff;border:1px solid var(--line);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.pn-link:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(0,191,165,.4)}
.pn-link span{font-size:13px;color:var(--faint)}
.pn-link strong{font-size:16px;font-weight:700}

/* ---------- cta band ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);color:var(--inverse);
  padding:72px 0;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url(/assets/images/backpic/back-2.webp);
  background-size:cover;background-position:center;
  opacity:.22;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(0,191,165,.35) 0%,rgba(14,18,20,.9) 55%,rgba(108,76,241,.32) 100%);
}
.cta-inner{position:relative;z-index:1;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px}
.cta-text{max-width:640px}
.cta-text h2{font-size:32px;font-weight:800;color:#fff}
.cta-text p{margin-top:12px;color:rgba(247,248,245,.78);font-size:16px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.fact{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--radius-pill);padding:6px 14px;font-size:13px;color:rgba(247,248,245,.85);
}
.fact b{font-weight:800;color:#fff;font-variant-numeric:tabular-nums}

/* ---------- footer ---------- */
.site-footer{background:var(--dark);color:var(--inverse);padding:56px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;padding-bottom:36px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(247,248,245,.68);max-width:360px}
.site-footer .logo-text{color:#fff}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:14px}
.footer-col ul{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer-col a{font-size:14px;color:rgba(247,248,245,.7)}
.footer-col a:hover{color:var(--brand)}
.footer-bottom{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;padding-top:22px;font-size:13px;color:rgba(247,248,245,.6)}
.to-top{color:rgba(247,248,245,.75);font-weight:600}
.to-top:hover{color:var(--brand)}

/* ---------- responsive ---------- */
@media (max-width:1279px){
  .container{max-width:960px}
  .article-layout{grid-template-columns:minmax(0,1fr) 260px;gap:36px}
  .card-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1023px){
  :root{--gap-section:64px}
  .container{max-width:720px}
  .article-head h1{font-size:32px}
  .article-layout{grid-template-columns:minmax(0,1fr);gap:28px}
  .toc{position:static;order:-1}
  .toc-toggle{display:grid}
  .toc-list{display:none;margin-top:8px}
  .toc.is-open .toc-list{display:block}
  .card-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .cta-text h2{font-size:26px}
}
@media (max-width:900px){
  .nav-toggle{display:grid}
  .icon-btn{display:none}
  .nav-chips{
    position:absolute;top:calc(100% + 1px);left:-24px;right:-24px;
    display:none;flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;padding:14px 24px 18px;border-bottom:1px solid var(--line);
    box-shadow:0 18px 32px rgba(14,18,20,.1);overflow:visible;
  }
  .site-header.nav-open .nav-chips{display:flex}
  .chip{width:100%;justify-content:flex-start;padding:11px 14px;border-radius:12px;background:#F6F8F6}
}
@media (max-width:767px){
  :root{--gap-section:48px}
  .container{padding:0 16px}
  .header-inner{height:60px;gap:12px}
  .logo-text{font-size:15px}
  .article-head h1{font-size:27px;line-height:1.35}
  .article-body{font-size:16px;line-height:1.8}
  .article-body h2{font-size:22px;margin-top:34px}
  .article-body h3{font-size:19px}
  .card-grid{grid-template-columns:1fr}
  .pn-nav{grid-template-columns:1fr}
  .cta-band{padding:52px 0}
  .cta-inner{flex-direction:column;align-items:flex-start}
  .cta-actions{width:100%}
  .cta-actions .btn{width:100%}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
}
@media (max-width:480px){
  .article-head h1{font-size:25px}
  .section-head h2{font-size:23px}
  .card{padding:16px}
  .empty-card{padding:28px 18px}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category2 */
:root{
  --primary:#00BFA5;
  --primary-dark:#009F8A;
  --primary-deep:#007F70;
  --accent:#6C4CF1;
  --amber:#FF9F1C;
  --amber-light:#FFB84D;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0E1214;
  --text:#161A1D;
  --text-2:#5C6670;
  --text-3:#8A949C;
  --border:#E4E9E5;
  --line:#EEF2EF;
  --success:#12B76A;
  --warning:#F79009;
  --error:#F04438;
  --primary-soft:rgba(0,191,165,.12);
  --accent-soft:rgba(108,76,241,.10);
  --radius-lg:20px;
  --radius:16px;
  --radius-sm:12px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(14,18,20,.04),0 8px 24px rgba(14,18,20,.06);
  --shadow-md:0 16px 40px rgba(14,18,20,.12);
  --shadow-inset:inset 0 0 0 1px rgba(255,255,255,.06);
  --space-section:80px;
  --font:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font);
  font-size:16px;
  line-height:1.75;
  color:var(--text);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border-radius:var(--radius-sm)}
a{color:var(--primary-deep);text-decoration:none;transition:color .2s ease,background-color .2s ease,border-color .2s ease}
a:hover{color:var(--primary-dark);text-decoration:underline}
h1,h2,h3,h4{margin:0;line-height:1.3;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
input,textarea,select{font-family:inherit;font-size:15px;color:var(--text)}
:focus-visible{outline:3px solid rgba(0,191,165,.55);outline-offset:2px;border-radius:8px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
@media (max-width:1023px){.container{max-width:960px}}
@media (max-width:767px){.container{max-width:100%;padding:0 16px}}

/* ---------- 头部导航 ---------- */
.site-header{
  position:sticky;top:0;z-index:80;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(180%) blur(12px);
  -webkit-backdrop-filter:saturate(180%) blur(12px);
  border-bottom:1px solid var(--line);
  transition:box-shadow .25s ease;
}
.site-header.is-scrolled{box-shadow:0 6px 24px rgba(14,18,20,.08)}
.header-inner{display:flex;align-items:center;gap:18px;height:68px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;flex:0 0 auto}
.logo:hover{text-decoration:none}
.logo-mark{
  width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--primary) 0%,#28A8E0 55%,var(--accent) 100%);
  color:#fff;font-weight:800;font-size:17px;letter-spacing:0;
  box-shadow:0 6px 16px rgba(0,191,165,.28);
}
.logo-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:6px;flex:1 1 auto;justify-content:center;overflow:visible}
.chip{
  display:inline-flex;align-items:center;height:36px;padding:0 15px;border-radius:var(--radius-pill);
  background:#F1F4F2;color:var(--text-2);font-size:14px;font-weight:600;white-space:nowrap;
  border:1px solid transparent;transition:all .2s ease;text-decoration:none;
}
.chip:hover{background:#E8EEEB;color:var(--text);text-decoration:none}
.chip.active{background:var(--primary-soft);color:var(--primary-deep);border-color:rgba(0,191,165,.35)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  color:var(--text-2);background:#F1F4F2;transition:all .2s ease;
}
.icon-btn:hover{background:#E8EEEB;color:var(--primary-deep)}
.nav-toggle{display:none;width:38px;height:38px;border-radius:12px;place-items:center;background:#F1F4F2;color:var(--text-2)}
.nav-toggle:hover{background:#E8EEEB;color:var(--primary-deep)}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--radius-sm);
  font-size:15px;font-weight:700;line-height:1.2;text-decoration:none;
  border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
}
.btn:hover{text-decoration:none}
.btn-primary{background:var(--amber);color:#3B2400;box-shadow:0 8px 20px rgba(255,159,28,.28)}
.btn-primary:hover{background:var(--amber-light);transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,159,28,.34);color:#3B2400}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-outline{background:transparent;color:var(--primary-deep);border-color:rgba(0,191,165,.5)}
.btn-outline:hover{background:rgba(0,191,165,.08);color:var(--primary-deep);border-color:var(--primary)}
.btn-ghost{background:transparent;color:var(--text-2)}
.btn-ghost:hover{background:#F1F4F2;color:var(--text)}
.btn-sm{padding:9px 16px;font-size:14px;border-radius:10px}
.btn-light{background:#fff;color:var(--dark)}
.btn-light:hover{background:#F1F4F2;color:var(--dark);transform:translateY(-2px)}
.btn[disabled]{background:#E4E9E5;color:var(--text-3);box-shadow:none;cursor:not-allowed;transform:none}
.btn.is-loading{position:relative;color:transparent;pointer-events:none}
.btn.is-loading::after{
  content:"";position:absolute;width:16px;height:16px;border-radius:50%;
  border:2px solid rgba(59,36,0,.3);border-top-color:#3B2400;animation:spin .7s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- 通用标签 / 徽章 ---------- */
.badge{
  display:inline-flex;align-items:center;gap:6px;
  padding:5px 12px;border-radius:var(--radius-pill);
  background:var(--primary-soft);color:var(--primary-deep);
  font-size:13px;font-weight:700;letter-spacing:.02em;
}
.badge-accent{background:var(--accent-soft);color:#4A2FD0}
.badge-amber{background:rgba(255,159,28,.14);color:#A85F00}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:700;letter-spacing:.16em;color:var(--primary-deep);text-transform:uppercase;
}

/* ---------- 首屏 ---------- */
.hero{
  position:relative;overflow:hidden;
  background-image:url("/assets/images/backpic/back-1.png");
  background-size:cover;background-position:center;
  border-bottom:1px solid var(--line);
}
.hero::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg,rgba(247,248,245,.96) 0%,rgba(247,248,245,.9) 45%,rgba(247,248,245,.72) 100%);
}
.hero-inner{position:relative;z-index:2;padding:72px 0 76px;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}
.hero h1{font-size:40px;line-height:1.25;font-weight:800;margin:18px 0 18px}
.hero h1 em{font-style:normal;color:var(--primary-deep);background:linear-gradient(180deg,transparent 62%,rgba(0,191,165,.24) 0)}
.hero-sub{font-size:16px;color:var(--text-2);max-width:560px;line-height:1.9}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-facts{display:flex;flex-wrap:wrap;gap:26px;margin-top:32px;padding-top:24px;border-top:1px dashed var(--border)}
.fact-k{font-size:12px;color:var(--text-3);letter-spacing:.08em}
.fact-v{font-size:19px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums}

.hero-panel{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  box-shadow:var(--shadow-md);padding:26px;position:relative;
}
.hero-panel::after{
  content:"";position:absolute;right:-14px;top:-14px;width:96px;height:96px;border-radius:26px;
  background:radial-gradient(circle at 30% 30%,rgba(108,76,241,.22),transparent 70%);
  pointer-events:none;
}
.panel-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:18px}
.panel-title{font-size:16px;font-weight:800}
.version-stamp{
  display:flex;align-items:baseline;gap:8px;
  font-variant-numeric:tabular-nums;font-weight:800;font-size:34px;color:var(--primary-deep);line-height:1.1;
}
.version-stamp span{font-size:14px;font-weight:600;color:var(--text-3)}
.panel-visual{border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--line);margin-bottom:18px}
.panel-visual img{width:100%;height:180px;object-fit:cover;border-radius:0}
.spec-rows{display:grid;gap:10px}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 14px;background:#F7F8F5;border-radius:10px;font-size:14px}
.spec-row dt{color:var(--text-3)}
.spec-row dd{margin:0;font-weight:700;font-variant-numeric:tabular-nums}

/* ---------- 板块通用 ---------- */
.section{padding:var(--space-section) 0}
.section-alt{background:#fff;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.section-head{max-width:720px;margin-bottom:40px}
.section-head h2{font-size:32px;font-weight:800;margin:14px 0 14px}
.section-head p{color:var(--text-2);line-height:1.9}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- 数据速览 ---------- */
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.stat-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(0,191,165,.35)}
.stat-num{font-size:28px;font-weight:800;color:var(--text);font-variant-numeric:tabular-nums;line-height:1.2}
.stat-num small{font-size:14px;font-weight:700;color:var(--primary-deep);margin-left:4px}
.stat-label{font-size:14px;color:var(--text-2);margin-top:8px}
.stat-note{font-size:13px;color:var(--text-3);margin-top:10px;padding-top:10px;border-top:1px solid var(--line)}

/* ---------- 版本时间轴 ---------- */
.timeline{position:relative;padding-left:36px}
.timeline::before{
  content:"";position:absolute;left:9px;top:8px;bottom:8px;width:2px;
  background:linear-gradient(180deg,var(--primary) 0%,rgba(0,191,165,.35) 60%,rgba(108,76,241,.25) 100%);
  border-radius:2px;
}
.tl-item{position:relative;margin-bottom:24px}
.tl-item:last-child{margin-bottom:0}
.tl-item::before{
  content:"";position:absolute;left:-33px;top:26px;width:12px;height:12px;border-radius:50%;
  background:#fff;border:3px solid var(--primary);box-shadow:0 0 0 4px rgba(0,191,165,.12);
}
.tl-item.is-muted::before{border-color:#C9D3CE;box-shadow:none}
.tl-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  padding:22px 24px;box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.tl-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:rgba(0,191,165,.3)}
.tl-top{display:flex;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:12px}
.tl-version{font-size:20px;font-weight:800;font-variant-numeric:tabular-nums;color:var(--text)}
.tl-date{font-size:13px;color:var(--text-3);font-variant-numeric:tabular-nums}
.tl-desc{color:var(--text-2);font-size:15px;line-height:1.85}
.tl-points{display:grid;grid-template-columns:repeat(2,1fr);gap:8px 22px;margin-top:14px}
.tl-points li{position:relative;padding-left:20px;font-size:14px;color:var(--text-2)}
.tl-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:3px;
  background:var(--primary-soft);border:2px solid var(--primary);
}
.tl-item.is-muted .tl-points li::before{border-color:#C9D3CE;background:#F1F4F2}
.tl-actions{margin-top:16px;display:flex;gap:10px;flex-wrap:wrap}

/* ---------- 更新前后对比 ---------- */
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.compare-col{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg);
  padding:26px;box-shadow:var(--shadow-sm);
}
.compare-col.new{border-color:rgba(0,191,165,.4);box-shadow:0 12px 34px rgba(0,191,165,.12)}
.compare-col h3{font-size:20px;font-weight:800;margin-bottom:6px}
.compare-col .col-note{font-size:13px;color:var(--text-3);margin-bottom:18px}
.compare-list li{
  display:flex;gap:12px;padding:12px 0;border-bottom:1px dashed var(--line);font-size:15px;color:var(--text-2);
}
.compare-list li:last-child{border-bottom:0}
.tag-old,.tag-new{
  flex:0 0 auto;height:24px;display:inline-flex;align-items:center;padding:0 10px;border-radius:var(--radius-pill);
  font-size:12px;font-weight:700;
}
.tag-old{background:#F1F4F2;color:var(--text-3)}
.tag-new{background:var(--primary-soft);color:var(--primary-deep)}

/* ---------- 截图轮播 ---------- */
.rail-wrap{position:relative}
.rail{
  display:flex;gap:20px;overflow-x:auto;scroll-snap-type:x mandatory;
  padding:6px 2px 18px;scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px}
.rail::-webkit-scrollbar-thumb{background:#D6DEDA;border-radius:6px}
.rail-card{
  flex:0 0 calc((100% - 60px)/3.5);scroll-snap-align:start;
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .22s ease,box-shadow .22s ease;
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
.rail-shot{aspect-ratio:16/10;overflow:hidden;background:#F1F4F2}
.rail-shot img{width:100%;height:100%;object-fit:cover;border-radius:0}
.rail-body{padding:16px 18px}
.rail-body h3{font-size:16px;font-weight:700;margin:10px 0 8px}
.rail-body p{font-size:14px;color:var(--text-2);line-height:1.75}
.rail-nav{display:flex;gap:10px;justify-content:flex-end;margin-top:4px}
.rail-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:var(--surface);border:1px solid var(--border);color:var(--text-2);transition:all .2s ease;
}
.rail-btn:hover{color:var(--primary-deep);border-color:rgba(0,191,165,.5);background:rgba(0,191,165,.06)}

/* ---------- 注意事项 ---------- */
.notice-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:28px;align-items:start}
.notice-list{display:grid;gap:14px}
.notice-item{
  display:flex;gap:16px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow-sm);
}
.notice-item:hover{border-color:rgba(0,191,165,.3)}
.notice-icon{
  flex:0 0 auto;width:38px;height:38px;border-radius:12px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary-deep);font-weight:800;font-size:15px;font-variant-numeric:tabular-nums;
}
.notice-item h3{font-size:16px;font-weight:700;margin-bottom:6px}
.notice-item p{font-size:14px;color:var(--text-2);line-height:1.8}
.side-card{
  background:var(--dark);color:#F7F8F5;border-radius:var(--radius-lg);padding:26px;
  position:relative;overflow:hidden;
}
.side-card::before{
  content:"";position:absolute;inset:0;
  background:linear-gradient(140deg,rgba(0,191,165,.22),rgba(108,76,241,.22));
  pointer-events:none;
}
.side-card > *{position:relative;z-index:2}
.side-card h3{font-size:20px;font-weight:800;margin-bottom:10px}
.side-card p{color:rgba(247,248,245,.75);font-size:14px;line-height:1.85}
.side-list{margin-top:18px;display:grid;gap:10px}
.side-list li{display:flex;justify-content:space-between;gap:14px;font-size:14px;padding:10px 0;border-bottom:1px solid rgba(247,248,245,.12)}
.side-list li:last-child{border-bottom:0}
.side-list span:last-child{color:#7FE7D8;font-weight:700;font-variant-numeric:tabular-nums}

/* ---------- FAQ ---------- */
.faq{max-width:800px;margin:0 auto;display:grid;gap:12px}
.faq-item{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-sm);
  overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease;
}
.faq-item.is-open{border-color:rgba(0,191,165,.45);box-shadow:0 10px 26px rgba(0,191,165,.1)}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;text-align:left;font-size:16px;font-weight:700;color:var(--text);
  min-height:56px;background:none;
}
.faq-q:hover{background:#FAFBFA}
.faq-sign{
  flex:0 0 auto;width:24px;height:24px;border-radius:8px;display:grid;place-items:center;
  background:var(--primary-soft);color:var(--primary-deep);font-size:16px;font-weight:800;line-height:1;
}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease}
.faq-a-inner{padding:0 20px 20px;font-size:15px;color:var(--text-2);line-height:1.9;border-left:3px solid transparent}
.faq-item.is-open .faq-a-inner{border-left-color:var(--primary);padding-left:18px}

/* ---------- CTA 带 ---------- */
.cta-band{
  position:relative;overflow:hidden;background:var(--dark);color:#F7F8F5;
  border-radius:var(--radius-lg);padding:48px;
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;opacity:.28;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(0,191,165,.32) 0%,rgba(14,18,20,.86) 55%,rgba(108,76,241,.34) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1.2fr .8fr;gap:36px;align-items:center}
.cta-inner h2{font-size:32px;font-weight:800;margin-bottom:14px}
.cta-inner p{color:rgba(247,248,245,.78);font-size:15px;line-height:1.9;max-width:560px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px}
.cta-facts{display:grid;gap:12px;background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.1);border-radius:var(--radius);padding:20px}
.cta-facts div{display:flex;justify-content:space-between;font-size:14px;color:rgba(247,248,245,.75)}
.cta-facts strong{color:#7FE7D8;font-variant-numeric:tabular-nums}

/* ---------- 页脚 ---------- */
.site-footer{background:var(--dark);color:#F7F8F5;margin-top:80px;padding:64px 0 26px}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px}
.footer-brand p{color:rgba(247,248,245,.66);font-size:14px;line-height:1.9;margin-top:16px;max-width:340px}
.footer-brand .logo-text{color:#F7F8F5}
.footer-col h4{font-size:16px;font-weight:700;color:#F7F8F5;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(247,248,245,.68);font-size:14px;text-decoration:none}
.footer-col a:hover{color:var(--primary);text-decoration:none}
.footer-bottom{
  margin-top:44px;padding-top:22px;border-top:1px solid rgba(247,248,245,.12);
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;
  font-size:13px;color:rgba(247,248,245,.55);
}
.to-top{color:rgba(247,248,245,.7)}
.to-top:hover{color:var(--primary);text-decoration:none}

/* ---------- 移动端吸底下载 ---------- */
.mobile-download-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:90;display:none;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(14,18,20,.08);
  transform:translateY(110%);transition:transform .28s ease;
}
.mobile-download-bar.is-visible{transform:translateY(0)}
.mobile-download-bar .btn{width:100%}

/* ---------- 面包屑 ---------- */
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:14px;color:var(--text-3);padding-top:22px}
.breadcrumb a{color:var(--text-2)}
.breadcrumb span.sep{color:var(--text-3)}

/* ---------- 响应式 ---------- */
@media (max-width:1279px){
  .hero h1{font-size:36px}
  .rail-card{flex:0 0 calc((100% - 40px)/3)}
}
@media (max-width:1023px){
  :root{--space-section:64px}
  .header-inner{height:60px}
  .nav-chips{justify-content:flex-start}
  .hero-inner{grid-template-columns:1fr;gap:34px;padding:56px 0 60px}
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .notice-grid{grid-template-columns:1fr}
  .cta-inner{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .rail-card{flex:0 0 calc((100% - 20px)/2)}
  .section-head h2{font-size:28px}
}
@media (max-width:767px){
  :root{--space-section:48px}
  .header-inner{height:56px;gap:10px}
  .nav-toggle{display:grid}
  .nav-chips{
    position:absolute;left:16px;right:16px;top:66px;
    flex-direction:column;align-items:stretch;gap:8px;
    background:#fff;border:1px solid var(--border);border-radius:var(--radius);
    padding:14px;box-shadow:var(--shadow-md);
    display:none;
  }
  .nav-chips.is-open{display:flex}
  .nav-chips .chip{height:42px;justify-content:center;font-size:15px}
  .header-actions .btn-primary{display:none}
  .hero h1{font-size:30px}
  .hero-sub{font-size:15px}
  .hero-actions .btn{width:100%}
  .hero-facts{gap:18px}
  .section-head h2{font-size:24px}
  .compare-grid{grid-template-columns:1fr}
  .stat-grid{grid-template-columns:1fr}
  .tl-points{grid-template-columns:1fr}
  .timeline{padding-left:26px}
  .tl-item::before{left:-23px;top:24px}
  .rail-card{flex:0 0 82%}
  .cta-band{padding:30px 22px}
  .cta-inner h2{font-size:24px}
  .footer-grid{grid-template-columns:1fr;gap:26px}
  .mobile-download-bar{display:block}
  .site-footer{padding-bottom:96px}
}
@media (max-width:480px){
  .hero h1{font-size:27px}
  .stat-num{font-size:24px}
  .tl-card{padding:18px}
  .badge{font-size:12px}
}
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important;scroll-behavior:auto !important}
}

/* roulang page: category4 */
:root{
  --brand:#00BFA5;--brand-600:#009F8A;--brand-700:#007F70;
  --purple:#6C4CF1;--amber:#FF9F1C;--amber-soft:#FFB84D;
  --bg:#F7F8F5;--surface:#FFFFFF;--dark:#0E1214;
  --text:#161A1D;--text-2:#5C6670;--text-3:#8A949C;
  --line:#E4E9E5;--line-soft:#EEF2EF;
  --ok:#12B76A;--err:#F04438;
  --r-lg:20px;--r:16px;--r-sm:12px;--r-pill:999px;
  --sh:0 1px 2px rgba(14,18,20,.04),0 8px 24px rgba(14,18,20,.06);
  --sh-h:0 16px 40px rgba(14,18,20,.12);
  --sp:80px;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.75;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block;border-radius:var(--r-sm)}
a{color:var(--brand-700);text-decoration:none;transition:color .2s,background .2s}
a:hover{color:var(--brand);text-decoration:underline}
button{font:inherit;cursor:pointer}
h1,h2,h3,h4{margin:0;line-height:1.25;letter-spacing:.01em}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
input,select,textarea{font-family:inherit}
:focus-visible{outline:3px solid rgba(0,191,165,.55);outline-offset:2px;border-radius:6px}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}

/* ============ 顶部导航 ============ */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,255,255,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--line);transition:box-shadow .24s}
.site-header.scrolled{box-shadow:var(--sh)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:68px;position:relative}
.logo{display:inline-flex;align-items:center;gap:10px;color:var(--text);flex:0 0 auto}
.logo:hover{color:var(--text);text-decoration:none}
.logo-mark{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;color:#fff;font-weight:800;font-size:16px;background:linear-gradient(135deg,#00BFA5,#6C4CF1);box-shadow:0 6px 16px rgba(0,191,165,.28)}
.logo-text{font-weight:800;font-size:17px;letter-spacing:.02em;white-space:nowrap}
.nav-chips{display:flex;align-items:center;gap:6px;flex:1 1 auto;min-width:0;overflow-x:auto;padding:4px 0;scrollbar-width:none}
.nav-chips::-webkit-scrollbar{display:none}
.chip{flex:0 0 auto;padding:8px 14px;border-radius:var(--r-pill);font-size:14px;font-weight:600;color:var(--text-2);background:#F1F4F2;border:1px solid transparent;transition:background .2s,color .2s,border-color .2s}
.chip:hover{background:#E8EEEB;color:var(--text);text-decoration:none}
.chip.active{background:rgba(0,191,165,.12);color:var(--brand-700);border-color:rgba(0,191,165,.35)}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;margin-left:auto}
.icon-btn{width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--text-2);display:grid;place-items:center;transition:color .2s,border-color .2s,background .2s}
.icon-btn:hover{color:var(--brand-700);border-color:rgba(0,191,165,.4);background:rgba(0,191,165,.06)}
.nav-toggle{display:none;width:40px;height:40px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--text);place-items:center}

/* ============ 按钮 ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:14px 24px;border-radius:12px;font-weight:700;font-size:15px;border:1px solid transparent;text-decoration:none;cursor:pointer;transition:transform .2s,box-shadow .2s,background .2s,color .2s,border-color .2s}
.btn:hover{text-decoration:none}
.btn-sm{padding:10px 18px;font-size:14px;border-radius:10px}
.btn-primary{background:var(--amber);color:#161A1D;box-shadow:0 6px 18px rgba(255,159,28,.28)}
.btn-primary:hover{background:var(--amber-soft);color:#161A1D;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,159,28,.34)}
.btn-primary:active{transform:translateY(0) scale(.99)}
.btn-ghost{background:transparent;border-color:rgba(0,191,165,.45);color:var(--brand-700)}
.btn-ghost:hover{background:rgba(0,191,165,.08);color:var(--brand-700)}
.btn-quiet{background:transparent;color:var(--text-2)}
.btn-quiet:hover{background:#EEF2EF;color:var(--text)}
.btn-block{width:100%}
.btn[disabled]{background:#E4E9E5;color:var(--text-3);box-shadow:none;cursor:not-allowed;transform:none}

/* ============ 首屏 ============ */
.hero{position:relative;overflow:hidden;padding:60px 0 68px;background-image:url('/assets/images/backpic/back-2.webp');background-size:cover;background-position:center}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(112deg,rgba(247,248,245,.97) 0%,rgba(247,248,245,.93) 48%,rgba(247,248,245,.74) 100%)}
.hero .container{position:relative;z-index:1}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--r-pill);background:rgba(0,191,165,.12);color:var(--brand-700);font-size:13px;font-weight:700;letter-spacing:.04em}
.hero h1{margin-top:16px;font-size:40px;line-height:1.22;font-weight:800;letter-spacing:.01em;max-width:16em}
.hero-sub{margin-top:16px;font-size:16px;line-height:1.85;color:var(--text-2);max-width:34em}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
.hero-facts li{display:inline-flex;align-items:center;gap:8px;padding:8px 14px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);font-size:13px;font-weight:600;color:var(--text-2)}
.hero-facts li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--brand)}
.hero-media{display:flex;justify-content:center}
.device-frame{position:relative;width:100%;max-width:340px;background:#fff;border:1px solid var(--line);border-radius:24px;padding:12px;box-shadow:0 20px 48px rgba(14,18,20,.14)}
.device-frame::after{content:"";position:absolute;inset:12px;border-radius:14px;box-shadow:inset 0 0 0 1px rgba(14,18,20,.05);pointer-events:none}
.device-frame img{width:100%;height:400px;object-fit:cover;border-radius:14px}

/* ============ 搜索与筛选 ============ */
.search-wrap{margin-top:26px;max-width:620px}
.search-bar{display:flex;gap:10px;align-items:center;background:#fff;border:1px solid var(--line);border-radius:14px;padding:8px;box-shadow:var(--sh);transition:border-color .2s,box-shadow .2s}
.search-bar:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,191,165,.16)}
.search-bar svg{flex:0 0 auto;margin-left:10px;color:var(--text-3)}
.search-bar input{flex:1 1 auto;min-width:0;border:0;background:transparent;padding:0 4px;min-height:44px;font-size:15px;color:var(--text);outline:none}
.search-bar input::placeholder{color:var(--text-3)}
.filter-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:20px}
.filter-chips a{display:inline-flex;align-items:center;padding:8px 16px;border-radius:var(--r-pill);background:#fff;border:1px solid var(--line);font-size:14px;font-weight:600;color:var(--text-2)}
.filter-chips a:hover{border-color:rgba(0,191,165,.45);color:var(--brand-700);background:rgba(0,191,165,.06);text-decoration:none}

/* ============ 通用板块 ============ */
.section{padding:var(--sp) 0}
.section.alt{background:#fff;border-top:1px solid var(--line-soft);border-bottom:1px solid var(--line-soft)}
.section-head{max-width:800px;margin-bottom:32px}
.section-head h2{font-size:32px;font-weight:700}
.section-head p{margin-top:12px;font-size:16px;color:var(--text-2)}
.section-head .kicker{display:inline-block;margin-bottom:12px;font-size:13px;font-weight:700;letter-spacing:.08em;color:var(--brand-700);text-transform:uppercase}

/* ============ FAQ ============ */
.faq-group{margin-bottom:38px}
.faq-group:last-of-type{margin-bottom:0}
.faq-group-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;max-width:860px}
.faq-group-head .num{flex:0 0 auto;width:34px;height:34px;border-radius:10px;display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff;background:linear-gradient(135deg,var(--brand),var(--purple))}
.faq-group-head h3{font-size:20px;font-weight:700}
.faq-list{max-width:860px;display:grid;gap:12px}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:12px;transition:border-color .2s,box-shadow .2s}
.faq-item:hover{border-color:rgba(0,191,165,.3)}
.faq-item.open{box-shadow:var(--sh);border-color:rgba(0,191,165,.38)}
.faq-item[hidden]{display:none}
.faq-q{position:relative;width:100%;min-height:56px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;background:transparent;border:0;text-align:left;font-size:16px;font-weight:600;color:var(--text);line-height:1.6}
.faq-q::before{content:"";position:absolute;left:0;top:12px;bottom:12px;width:3px;border-radius:0 3px 3px 0;background:transparent;transition:background .2s}
.faq-item.open .faq-q::before{background:var(--brand)}
.faq-icon{position:relative;flex:0 0 auto;width:22px;height:22px}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--brand-700);border-radius:2px;transition:transform .2s,opacity .2s}
.faq-icon::before{left:3px;right:3px;top:10px;height:2px}
.faq-icon::after{top:3px;bottom:3px;left:10px;width:2px}
.faq-item.open .faq-icon::after{transform:scaleY(0);opacity:0}
.faq-a{display:none;padding:16px 20px 20px;border-top:1px solid var(--line-soft);color:var(--text-2);font-size:15px;line-height:1.85}
.faq-a p+p{margin-top:10px}
.faq-a strong{color:var(--text)}
.faq-item.open .faq-a{display:block}
.faq-empty{max-width:860px;border:1px dashed var(--line);background:#fff;border-radius:16px;padding:36px 24px;text-align:center;color:var(--text-2);font-size:15px}
.faq-empty span{display:block;margin-top:6px;font-size:14px;color:var(--text-3)}

/* ============ 表单 ============ */
.help-form{max-width:860px;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);padding:28px;box-shadow:var(--sh)}
.form-grid{display:grid;grid-template-columns:1fr 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 .req{color:var(--err)}
.field input,.field select,.field textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:#fff;padding:0 14px;font-size:15px;color:var(--text);transition:border-color .2s,box-shadow .2s}
.field input,.field select{height:48px}
.field textarea{min-height:136px;padding:12px 14px;line-height:1.7;resize:vertical}
.field input::placeholder,.field textarea::placeholder{color:var(--text-3)}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--brand);box-shadow:0 0 0 3px rgba(0,191,165,.18);outline:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:var(--err);box-shadow:0 0 0 3px rgba(240,68,56,.12)}
.err-msg{font-size:13px;color:var(--err)}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px}
.form-note{font-size:13px;color:var(--text-3)}
.form-status{margin-top:16px;padding:12px 16px;border-radius:10px;font-size:14px;display:none}
.form-status.ok{display:block;background:rgba(18,183,106,.1);border:1px solid rgba(18,183,106,.3);color:#0B7A47}
.form-status.err{display:block;background:rgba(240,68,56,.08);border:1px solid rgba(240,68,56,.3);color:#B42318}

/* ============ 相关帮助列表 ============ */
.link-list{max-width:860px;display:grid;gap:12px}
.link-item{display:flex;align-items:center;gap:16px;padding:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r);color:var(--text);transition:transform .2s,box-shadow .2s,border-color .2s}
.link-item:hover{transform:translateY(-3px);box-shadow:var(--sh-h);border-color:rgba(0,191,165,.35);color:var(--text);text-decoration:none}
.link-item img{flex:0 0 auto;width:112px;height:76px;object-fit:cover;border-radius:12px}
.link-item .li-body{min-width:0}
.link-item h4{font-size:16px;font-weight:700}
.link-item p{margin-top:6px;font-size:14px;line-height:1.7;color:var(--text-2);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.link-item .li-meta{margin-top:8px;display:flex;flex-wrap:wrap;gap:10px;font-size:12px;color:var(--text-3)}
.badge{display:inline-flex;align-items:center;padding:3px 10px;border-radius:var(--r-pill);font-size:12px;font-weight:700;background:rgba(0,191,165,.12);color:var(--brand-700)}
.badge.purple{background:rgba(108,76,241,.12);color:#4A33B8}

/* ============ 底部 CTA ============ */
.cta-band{position:relative;overflow:hidden;background-color:var(--dark);background-image:url('/assets/images/backpic/back-1.png');background-size:cover;background-position:center;color:#F7F8F5;padding:72px 0}
.cta-band::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(14,18,20,.95) 0%,rgba(14,18,20,.86) 52%,rgba(108,76,241,.4) 100%)}
.cta-band .container{position:relative;z-index:1}
.cta-inner{max-width:820px}
.cta-band h2{font-size:32px;font-weight:700;color:#fff}
.cta-band p{margin-top:14px;font-size:16px;line-height:1.85;color:rgba(247,248,245,.78)}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
.cta-band .btn-ghost{border-color:rgba(247,248,245,.4);color:#F7F8F5}
.cta-band .btn-ghost:hover{background:rgba(247,248,245,.1);color:#fff}
.cta-facts{display:flex;flex-wrap:wrap;gap:20px;margin-top:28px;padding-top:22px;border-top:1px solid rgba(247,248,245,.16)}
.cta-facts div{font-size:13px;color:rgba(247,248,245,.68)}
.cta-facts strong{display:block;font-size:16px;font-weight:800;color:#F7F8F5;font-variant-numeric:tabular-nums}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:rgba(247,248,245,.72);padding:64px 0 24px;font-size:14px}
.footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px}
.footer-brand .logo{color:#F7F8F5}
.footer-brand .logo:hover{color:#F7F8F5}
.footer-brand p{margin-top:16px;line-height:1.85;color:rgba(247,248,245,.66);max-width:34em}
.footer-col h4{font-size:16px;font-weight:700;color:#F7F8F5;margin-bottom:16px}
.footer-col ul{display:grid;gap:10px}
.footer-col a{color:rgba(247,248,245,.7);font-size:14px}
.footer-col a:hover{color:var(--brand);text-decoration:none}
.footer-bottom{margin-top:48px;padding-top:22px;border-top:1px solid rgba(247,248,245,.14);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center;font-size:13px;color:rgba(247,248,245,.55)}
.to-top{color:var(--brand);font-weight:600}
.to-top:hover{color:var(--brand);text-decoration:none}

/* ============ 移动端吸底下载条 ============ */
.sticky-download{position:fixed;left:0;right:0;bottom:0;z-index:80;display:none;align-items:center;gap:12px;padding:8px 16px calc(8px + env(safe-area-inset-bottom,0px));background:#fff;border-top:1px solid var(--line);box-shadow:0 -6px 20px rgba(14,18,20,.08);transform:translateY(110%);transition:transform .24s}
.sticky-download.show{transform:translateY(0)}
.sticky-download .sd-text{flex:1 1 auto;min-width:0;font-size:13px;color:var(--text-2);line-height:1.4}
.sticky-download .sd-text strong{display:block;font-size:14px;color:var(--text)}

/* ============ 响应式 ============ */
@media (max-width:1024px){
  :root{--sp:64px}
  .container{max-width:960px}
  .hero h1{font-size:34px}
  .hero-grid{gap:32px}
  .section-head h2,.cta-band h2{font-size:28px}
  .footer-grid{grid-template-columns:1.4fr 1fr 1fr;gap:32px}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:960px){
  .nav-toggle{display:grid}
  .nav-chips{position:absolute;top:calc(100% + 1px);left:0;right:0;display:none;flex-wrap:wrap;gap:8px;padding:14px 24px 18px;background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--sh);overflow:visible}
  .nav-chips.open{display:flex}
  .header-inner{min-height:60px}
  .hero-grid{grid-template-columns:1fr;gap:36px}
  .hero-media{order:-1}
  .device-frame{max-width:300px}
  .device-frame img{height:340px}
}
@media (max-width:768px){
  :root{--sp:48px}
  .container{padding:0 16px}
  .header-inner{gap:12px}
  .logo-text{font-size:16px}
  .header-actions .btn-primary{display:none}
  .nav-chips{padding:14px 16px 18px}
  .hero{padding:40px 0 52px}
  .hero h1{font-size:30px;max-width:none}
  .hero-sub{font-size:15px}
  .hero-actions .btn{flex:1 1 100%}
  .hero-facts{gap:8px}
  .hero-facts li{font-size:12px;padding:6px 12px}
  .section-head h2,.cta-band h2{font-size:24px}
  .form-grid{grid-template-columns:1fr}
  .help-form{padding:20px}
  .link-item{flex-direction:column;align-items:flex-start}
  .link-item img{width:100%;height:150px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px;padding-top:0}
  .footer-brand{grid-column:1 / -1}
  .cta-band{padding:52px 0}
  .cta-actions .btn{flex:1 1 100%}
  .sticky-download{display:flex}
  .site-footer{padding-bottom:96px}
}
@media (max-width:520px){
  .hero h1{font-size:27px;line-height:1.28}
  .search-bar{flex-wrap:wrap;padding:10px}
  .search-bar input{flex:1 1 100%;padding:6px 4px}
  .search-bar .btn{flex:1 1 100%}
  .faq-q{font-size:15px;padding:14px 16px}
  .faq-a{padding:14px 16px 18px}
  .link-item img{height:140px}
  .footer-grid{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none!important;animation:none!important;scroll-behavior:auto!important}
}

/* roulang page: category3 */
/* ============ 设计变量 ============ */
:root{
  --brand:#00BFA5;
  --brand-dark:#009F8A;
  --brand-deep:#007F70;
  --brand-soft:rgba(0,191,165,.10);
  --brand-line:rgba(0,191,165,.35);
  --accent:#6C4CF1;
  --accent-soft:rgba(108,76,241,.10);
  --amber:#FF9F1C;
  --amber-light:#FFB84D;
  --bg:#F7F8F5;
  --surface:#FFFFFF;
  --dark:#0E1214;
  --text:#161A1D;
  --text-2:#5C6670;
  --text-3:#8A949C;
  --inv:#F7F8F5;
  --border:#E4E9E5;
  --line:#EEF2EF;
  --ok:#12B76A;
  --warn:#F79009;
  --err:#F04438;
  --r-lg:20px;
  --r-md:16px;
  --r-sm:12px;
  --r-pill:999px;
  --sh-1:0 1px 2px rgba(14,18,20,.04),0 8px 24px rgba(14,18,20,.06);
  --sh-2:0 16px 40px rgba(14,18,20,.12);
  --sec-y:80px;
  --container:1200px;
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ============ Reset / Base ============ */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:90px;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Source Han Sans SC","Noto Sans SC","Hiragino Sans GB",sans-serif;
  font-size:16px;line-height:1.75;color:var(--text);background:var(--bg);
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;border:0;}
a{color:var(--brand-deep);text-decoration:none;transition:color .2s var(--ease);}
a:hover{color:var(--brand);text-decoration:underline;}
h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
button,input,textarea,select{font:inherit;color:inherit;}
button{cursor:pointer;border:0;background:none;}
:focus-visible{outline:3px solid rgba(0,191,165,.55);outline-offset:2px;border-radius:6px;}
::selection{background:rgba(0,191,165,.22);}
.tnum{font-variant-numeric:tabular-nums;}

/* ============ 容器 ============ */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 24px;}

/* ============ 顶部导航 ============ */
.site-header{
  position:sticky;top:0;z-index:60;
  background:rgba(255,255,255,.92);
  backdrop-filter:saturate(160%) blur(12px);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--border);
  transition:box-shadow .22s var(--ease);
}
.site-header.is-scrolled{box-shadow:0 8px 24px rgba(14,18,20,.08);}
.header-inner{display:flex;align-items:center;gap:20px;height:68px;}
.logo{display:inline-flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none;}
.logo:hover{text-decoration:none;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;flex:0 0 auto;
  display:grid;place-items:center;
  background:linear-gradient(135deg,var(--brand) 0%,var(--accent) 100%);
  color:#fff;font-weight:800;font-size:15px;letter-spacing:.02em;
  box-shadow:0 6px 16px rgba(0,191,165,.28);
}
.logo-text{font-size:17px;font-weight:800;color:var(--text);letter-spacing:.01em;}
.nav-chips{display:flex;align-items:center;gap:8px;flex:1 1 auto;min-width:0;}
.chip{
  display:inline-flex;align-items:center;gap:6px;
  padding:8px 16px;border-radius:var(--r-pill);
  background:#F1F4F2;border:1px solid transparent;
  color:var(--text-2);font-size:14px;font-weight:600;line-height:20px;
  white-space:nowrap;text-decoration:none;
  transition:background .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.chip:hover{background:#E8EEEB;color:var(--text);text-decoration:none;}
.chip.active{
  background:var(--brand-soft);color:var(--brand-deep);
  border-color:var(--brand-line);
}
.header-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
.icon-btn{
  width:38px;height:38px;border-radius:var(--r-sm);
  display:grid;place-items:center;color:var(--text-2);
  border:1px solid var(--border);background:#fff;
  transition:background .2s var(--ease),color .2s var(--ease);
}
.icon-btn:hover{background:var(--brand-soft);color:var(--brand-deep);}
.nav-toggle{
  display:none;width:40px;height:40px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:#fff;color:var(--text);
  place-items:center;
}

/* ============ 按钮 ============ */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 24px;border-radius:var(--r-sm);
  font-size:15px;font-weight:700;line-height:20px;
  text-decoration:none;border:1px solid transparent;
  transition:transform .18s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease);
}
.btn:hover{text-decoration:none;}
.btn-primary{background:var(--amber);color:#1B1206;box-shadow:0 8px 20px rgba(255,159,28,.28);}
.btn-primary:hover{background:var(--amber-light);color:#1B1206;transform:translateY(-2px);box-shadow:0 14px 30px rgba(255,159,28,.34);}
.btn-primary:active{transform:translateY(0) scale(.99);}
.btn-outline{background:transparent;border-color:var(--brand-line);color:var(--brand-deep);}
.btn-outline:hover{background:var(--brand-soft);color:var(--brand-deep);transform:translateY(-2px);}
.btn-ghost{background:transparent;color:var(--text-2);}
.btn-ghost:hover{background:#F1F4F2;color:var(--text);}
.btn-sm{padding:10px 18px;font-size:14px;}
.btn-block{width:100%;}
.btn[disabled]{background:#EDEFEE;color:var(--text-3);box-shadow:none;cursor:not-allowed;transform:none;}

/* ============ 通用板块 ============ */
.section{padding:var(--sec-y) 0;}
.section-alt{background:#fff;}
.section-head{max-width:760px;margin-bottom:40px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  padding:6px 14px;border-radius:var(--r-pill);
  background:var(--accent-soft);color:var(--accent);
  font-size:13px;font-weight:700;letter-spacing:.04em;margin-bottom:16px;
}
.eyebrow.brand{background:var(--brand-soft);color:var(--brand-deep);}
h2.section-title{font-size:32px;line-height:1.28;font-weight:700;letter-spacing:.01em;}
.section-sub{margin-top:14px;color:var(--text-2);font-size:16px;line-height:1.85;}

/* ============ Hero ============ */
.hero{
  position:relative;overflow:hidden;
  background-color:#0E1214;
  background-image:url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  color:var(--inv);
  padding:72px 0 80px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(14,18,20,.94) 0%,rgba(14,18,20,.86) 42%,rgba(0,127,112,.72) 100%);
}
.hero .container{position:relative;z-index:2;}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:14px;color:rgba(247,248,245,.72);margin-bottom:22px;}
.crumb a{color:rgba(247,248,245,.82);}
.crumb a:hover{color:#fff;}
.crumb .sep{color:rgba(247,248,245,.4);}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(0,191,165,.16);border:1px solid rgba(0,191,165,.38);
  color:#7FF0DE;font-size:13px;font-weight:700;margin-bottom:20px;
}
.hero h1{font-size:40px;line-height:1.24;font-weight:800;letter-spacing:.01em;}
.hero h1 .hl{
  background:linear-gradient(180deg,transparent 62%,rgba(255,159,28,.42) 62%);
  padding:0 2px;
}
.hero-lead{margin-top:20px;max-width:560px;font-size:16px;line-height:1.9;color:rgba(247,248,245,.84);}
.hero-chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:26px;}
.hero-chips .tag{
  padding:7px 14px;border-radius:var(--r-pill);
  background:rgba(255,255,255,.10);border:1px solid rgba(255,255,255,.18);
  color:rgba(247,248,245,.92);font-size:13px;font-weight:600;text-decoration:none;
  transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.hero-chips .tag:hover{background:rgba(0,191,165,.24);border-color:rgba(0,191,165,.5);color:#fff;transform:translateY(-2px);text-decoration:none;}
.hero-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:32px;}
.hero-cta .btn-outline{border-color:rgba(247,248,245,.42);color:#F7F8F5;}
.hero-cta .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff;}
.hero-facts{
  display:flex;flex-wrap:wrap;gap:12px 32px;margin-top:36px;
  padding-top:24px;border-top:1px solid rgba(255,255,255,.16);
}
.fact{display:flex;flex-direction:column;gap:2px;}
.fact dt{font-size:12px;color:rgba(247,248,245,.62);letter-spacing:.04em;}
.fact dd{margin:0;font-size:16px;font-weight:800;color:#fff;}
.hero-visual{position:relative;}
.hero-visual .frame{
  border-radius:24px;overflow:hidden;border:1px solid rgba(255,255,255,.18);
  box-shadow:0 28px 60px rgba(0,0,0,.45);
  background:#fff;
}
.hero-visual img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/3;}
.hero-visual .float-card{
  position:absolute;left:-18px;bottom:-22px;
  background:#fff;color:var(--text);
  border-radius:var(--r-md);padding:14px 18px;box-shadow:var(--sh-2);
  display:flex;align-items:center;gap:12px;max-width:270px;
}
.hero-visual .float-card strong{display:block;font-size:15px;font-weight:800;}
.hero-visual .float-card span{font-size:13px;color:var(--text-2);}
.dot-badge{
  width:38px;height:38px;border-radius:12px;flex:0 0 auto;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);
}

/* ============ Bento 功能网格 ============ */
.bento{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;}
.bento-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:28px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
  display:flex;flex-direction:column;gap:14px;
}
.bento-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-line);}
.span-2{grid-column:span 2;}
.span-3{grid-column:span 3;}
.span-4{grid-column:span 4;}
.span-6{grid-column:span 6;}
.bento-icon{
  width:46px;height:46px;border-radius:14px;display:grid;place-items:center;
  background:var(--brand-soft);color:var(--brand-deep);flex:0 0 auto;
}
.bento-card.purple .bento-icon{background:var(--accent-soft);color:var(--accent);}
.bento-card.amber .bento-icon{background:rgba(255,159,28,.14);color:#B96A00;}
.bento-card h3{font-size:20px;line-height:1.4;font-weight:700;}
.bento-card p{font-size:15px;color:var(--text-2);line-height:1.8;}
.bento-card .mini-list{display:flex;flex-direction:column;gap:10px;margin-top:2px;}
.bento-card .mini-list li{
  display:flex;gap:10px;font-size:14px;color:var(--text-2);line-height:1.7;
  padding-bottom:10px;border-bottom:1px dashed var(--line);
}
.bento-card .mini-list li:last-child{border-bottom:0;padding-bottom:0;}
.bento-card .mini-list b{color:var(--text);font-weight:700;}
.check{color:var(--brand);flex:0 0 auto;margin-top:3px;}
.bento-media{border-radius:var(--r-sm);overflow:hidden;border:1px solid var(--line);margin-top:auto;}
.bento-media img{width:100%;aspect-ratio:16/9;object-fit:cover;}
.bento-wide{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.85fr);gap:24px;align-items:center;}
.badge-row{display:flex;flex-wrap:wrap;gap:8px;}
.badge{
  display:inline-flex;align-items:center;
  padding:5px 12px;border-radius:var(--r-pill);
  background:var(--brand-soft);color:var(--brand-deep);
  font-size:13px;font-weight:700;
}
.badge.purple{background:var(--accent-soft);color:var(--accent);}
.badge.amber{background:rgba(255,159,28,.16);color:#A65F00;}

/* ============ 场景清单 ============ */
.scene-wrap{display:grid;grid-template-columns:minmax(0,.78fr) minmax(0,1.22fr);gap:48px;align-items:start;}
.scene-side{position:sticky;top:100px;}
.scene-list{display:flex;flex-direction:column;gap:14px;}
.scene-item{
  display:flex;gap:16px;align-items:flex-start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:20px 22px;transition:background .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.scene-item:hover{background:rgba(0,191,165,.045);border-color:var(--brand-line);transform:translateX(4px);}
.scene-num{
  font-size:14px;font-weight:800;color:var(--brand-deep);
  width:34px;height:34px;flex:0 0 auto;border-radius:10px;
  display:grid;place-items:center;background:var(--brand-soft);
  font-variant-numeric:tabular-nums;
}
.scene-item h4{font-size:17px;font-weight:700;line-height:1.5;}
.scene-item p{margin-top:6px;font-size:14px;color:var(--text-2);line-height:1.75;}

/* ============ 截图轮播 ============ */
.rail-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:28px;}
.rail-nav{display:flex;gap:10px;}
.rail-btn{
  width:42px;height:42px;border-radius:var(--r-sm);
  border:1px solid var(--border);background:#fff;color:var(--text-2);
  display:grid;place-items:center;
  transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease),border-color .2s var(--ease);
}
.rail-btn:hover{background:var(--brand-soft);color:var(--brand-deep);border-color:var(--brand-line);transform:translateY(-2px);}
.rail{
  display:flex;gap:20px;overflow-x:auto;padding:6px 2px 22px;
  scroll-snap-type:x mandatory;
  scrollbar-width:thin;
}
.rail::-webkit-scrollbar{height:6px;}
.rail::-webkit-scrollbar-thumb{background:#D8E0DA;border-radius:999px;}
.rail-card{
  flex:0 0 calc((100% - 60px) / 3.5);
  scroll-snap-align:start;
  background:#fff;border:1px solid var(--border);border-radius:var(--r-lg);
  overflow:hidden;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.rail-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);}
.rail-card figure{margin:0;}
.rail-card img{width:100%;aspect-ratio:4/3;object-fit:cover;}
.rail-card .rail-body{padding:18px 20px 22px;}
.rail-card h4{margin-top:10px;font-size:17px;font-weight:700;}
.rail-card p{margin-top:8px;font-size:14px;color:var(--text-2);line-height:1.75;}

/* ============ 评价摘要 ============ */
.review-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;}
.review-card{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-md);
  padding:24px;box-shadow:var(--sh-1);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.review-card:hover{transform:translateY(-4px);box-shadow:var(--sh-2);border-color:var(--brand-line);}
.stars{display:flex;gap:3px;color:var(--amber);margin-bottom:14px;}
.review-card p{font-size:15px;color:var(--text-2);line-height:1.85;}
.review-user{display:flex;align-items:center;gap:12px;margin-top:20px;padding-top:16px;border-top:1px solid var(--line);}
.review-user img{width:40px;height:40px;border-radius:50%;object-fit:cover;}
.review-user strong{display:block;font-size:14px;font-weight:700;}
.review-user span{font-size:13px;color:var(--text-3);}

/* ============ FAQ ============ */
.faq{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:14px;}
.faq-item{
  background:#fff;border:1px solid var(--border);border-radius:var(--r-sm);
  overflow:hidden;position:relative;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item::before{
  content:"";position:absolute;left:0;top:0;bottom:0;width:3px;
  background:var(--brand);opacity:0;transition:opacity .2s var(--ease);
}
.faq-item.open{border-color:var(--brand-line);box-shadow:var(--sh-1);}
.faq-item.open::before{opacity:1;}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;min-height:56px;text-align:left;
  font-size:16px;font-weight:700;color:var(--text);
  transition:background .2s var(--ease);
}
.faq-q:hover{background:rgba(0,191,165,.05);}
.faq-sign{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:grid;place-items:center;background:#F1F4F2;color:var(--text-2);
  font-size:16px;font-weight:700;transition:background .2s var(--ease),color .2s var(--ease),transform .2s var(--ease);
}
.faq-item.open .faq-sign{background:var(--brand-soft);color:var(--brand-deep);transform:rotate(180deg);}
.faq-a{max-height:0;overflow:hidden;transition:max-height .28s var(--ease);}
.faq-a-inner{padding:0 22px 22px;font-size:15px;color:var(--text-2);line-height:1.85;}

/* ============ 深色 CTA ============ */
.cta-band{
  position:relative;overflow:hidden;color:var(--inv);
  background-color:#0E1214;
  background-image:url("/assets/images/backpic/back-3.png");
  background-size:cover;background-position:center;
  padding:72px 0;
}
.cta-band::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(115deg,rgba(14,18,20,.95) 0%,rgba(20,32,34,.9) 55%,rgba(108,76,241,.5) 100%);
}
.cta-band .container{position:relative;z-index:2;}
.cta-inner{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:40px;align-items:center;}
.cta-inner h2{font-size:32px;line-height:1.3;font-weight:800;}
.cta-inner p{margin-top:16px;font-size:16px;color:rgba(247,248,245,.82);line-height:1.9;max-width:560px;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
.cta-actions .btn-outline{border-color:rgba(247,248,245,.4);color:#F7F8F5;}
.cta-actions .btn-outline:hover{background:rgba(255,255,255,.12);color:#fff;}
.spec-card{
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.16);
  border-radius:var(--r-lg);padding:26px;
  backdrop-filter:blur(6px);
}
.spec-card h3{font-size:17px;font-weight:700;margin-bottom:16px;color:#fff;}
.spec-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px dashed rgba(255,255,255,.16);font-size:14px;}
.spec-row:last-child{border-bottom:0;padding-bottom:0;}
.spec-row span{color:rgba(247,248,245,.68);}
.spec-row b{color:#fff;font-weight:700;font-variant-numeric:tabular-nums;}

/* ============ 页脚 ============ */
.site-footer{background:var(--dark);color:var(--inv);padding:64px 0 28px;}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr));gap:40px;}
.footer-brand p{margin-top:18px;font-size:14px;line-height:1.9;color:rgba(247,248,245,.66);max-width:340px;}
.site-footer .logo-text{color:#fff;}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:18px;}
.footer-col ul{display:flex;flex-direction:column;gap:11px;}
.footer-col a{font-size:14px;color:rgba(247,248,245,.68);text-decoration:none;}
.footer-col a:hover{color:var(--brand);text-decoration:none;}
.footer-bottom{
  margin-top:48px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;
  font-size:13px;color:rgba(247,248,245,.6);
}
.to-top{color:rgba(247,248,245,.8);font-size:13px;font-weight:600;}
.to-top:hover{color:var(--brand);}

/* ============ 移动端吸底下载条 ============ */
.mobile-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  display:none;align-items:center;gap:12px;
  padding:10px 16px calc(10px + env(safe-area-inset-bottom));
  background:rgba(255,255,255,.96);border-top:1px solid var(--border);
  box-shadow:0 -8px 24px rgba(14,18,20,.1);
  transform:translateY(110%);transition:transform .28s var(--ease);
}
.mobile-bar.show{transform:translateY(0);}
.mobile-bar .mb-info{flex:1 1 auto;min-width:0;}
.mobile-bar .mb-info strong{display:block;font-size:14px;font-weight:800;}
.mobile-bar .mb-info span{font-size:12px;color:var(--text-3);}
.mobile-bar .btn{flex:0 0 auto;}

/* ============ 响应式 ============ */
@media (max-width:1279px){
  .container{max-width:960px;}
  .hero h1{font-size:36px;}
}
@media (max-width:1023px){
  :root{--sec-y:64px;}
  .container{max-width:720px;}
  .nav-chips{
    position:absolute;left:0;right:0;top:100%;
    flex-direction:column;align-items:stretch;gap:6px;
    background:#fff;border-bottom:1px solid var(--border);
    padding:14px 24px 20px;box-shadow:0 16px 32px rgba(14,18,20,.1);
    display:none;
  }
  .nav-chips.open{display:flex;}
  .nav-toggle{display:grid;}
  .header-inner{justify-content:space-between;}
  .icon-btn{display:none;}
  .hero-grid{grid-template-columns:1fr;gap:40px;}
  .hero-visual .float-card{left:auto;right:12px;bottom:-18px;}
  .bento{grid-template-columns:repeat(4,1fr);}
  .span-4{grid-column:span 4;}
  .span-3{grid-column:span 2;}
  .span-2{grid-column:span 2;}
  .bento-wide{grid-template-columns:1fr;}
  .scene-wrap{grid-template-columns:1fr;gap:28px;}
  .scene-side{position:static;}
  .rail-card{flex:0 0 calc((100% - 40px) / 2.3);}
  .review-grid{grid-template-columns:repeat(2,1fr);}
  .cta-inner{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}
  .footer-brand{grid-column:1 / -1;}
  .footer-brand p{max-width:none;}
}
@media (max-width:767px){
  :root{--sec-y:48px;}
  .container{padding:0 16px;}
  .header-inner{height:56px;}
  .logo-text{font-size:15px;}
  .hero{padding:48px 0 96px;}
  .hero h1{font-size:30px;line-height:1.34;}
  .hero-lead{font-size:15px;}
  .hero-cta .btn{flex:1 1 100%;}
  .hero-facts{gap:14px 22px;}
  h2.section-title{font-size:24px;}
  .bento{grid-template-columns:1fr;}
  .span-2,.span-3,.span-4,.span-6{grid-column:span 1;}
  .bento-card{padding:22px;}
  .rail-card{flex:0 0 82%;}
  .rail-head{flex-direction:column;align-items:flex-start;}
  .review-grid{grid-template-columns:1fr;}
  .cta-inner h2{font-size:24px;}
  .cta-actions .btn{flex:1 1 100%;}
  .footer-grid{grid-template-columns:1fr;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
  .mobile-bar{display:flex;}
  .faq-q{padding:16px 18px;font-size:15px;}
  .faq-a-inner{padding:0 18px 20px;}
}
@media (max-width:479px){
  .hero h1{font-size:26px;line-height:1.36;}
  h2.section-title{font-size:22px;}
  .bento-card h3{font-size:18px;}
  .scene-item{padding:16px;}
}
@media (prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;scroll-behavior:auto !important;}
}