/* roulang page: index */
:root{
    --ink:#14101F;
    --ink-2:#1E1733;
    --brand:#FF2E88;
    --brand-2:#8B5CF6;
    --accent:#22D3EE;
    --warm:#FFB020;
    --bg:#F7F6FB;
    --card:#FFFFFF;
    --line:rgba(20,16,31,.08);
    --text:#1B1730;
    --muted:#5B5470;
    --radius-lg:24px;
    --radius-md:18px;
    --radius-sm:14px;
    --shadow:0 10px 30px -12px rgba(20,16,31,.18);
    --shadow-hover:0 24px 60px -20px rgba(255,46,136,.28);
    --grad:linear-gradient(120deg,#FF2E88 0%,#8B5CF6 52%,#22D3EE 100%);
    --ease:cubic-bezier(.2,.7,.3,1);
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    background:var(--bg);
    color:var(--text);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
    padding-bottom:76px;
  }
  img{max-width:100%;display:block;border:0;}
  a{color:inherit;text-decoration:none;}
  button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  ::selection{background:rgba(255,46,136,.22);}
  :focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}
  .num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;}

  .container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
  @media (min-width:1024px){.container{padding:0 32px;}}

  /* ---------- 导航 ---------- */
  .site-header{
    position:fixed;top:0;left:0;right:0;z-index:80;
    height:56px;
    background:rgba(20,16,31,.32);
    backdrop-filter:blur(16px) saturate(140%);
    -webkit-backdrop-filter:blur(16px) saturate(140%);
    border-bottom:1px solid rgba(255,255,255,.14);
    box-shadow:0 12px 30px -22px rgba(0,0,0,.75);
    transition:height .24s var(--ease),background .24s var(--ease),box-shadow .24s var(--ease);
  }
  @media (min-width:768px){.site-header{height:68px;}}
  .site-header.is-scrolled{
    height:58px;
    background:rgba(20,16,31,.92);
    box-shadow:0 18px 44px -24px rgba(0,0,0,.85);
  }
  .nav-inner{display:flex;align-items:center;justify-content:space-between;height:100%;gap:20px;}
  .logo{display:flex;align-items:center;gap:12px;flex-shrink:0;}
  .logo-mark{
    width:32px;height:32px;border-radius:10px;background:var(--grad);
    display:flex;align-items:center;justify-content:center;gap:3px;
    box-shadow:0 8px 20px -10px rgba(255,46,136,.85);
  }
  .logo-mark span{width:4px;height:4px;border-radius:999px;background:#fff;opacity:.95;}
  .logo-mark span:nth-child(2){height:12px;border-radius:3px;}
  .logo-text{color:#fff;font-weight:700;font-size:16px;letter-spacing:.01em;line-height:1.2;}
  .logo-text small{display:block;font-size:11px;font-weight:500;color:rgba(255,255,255,.6);letter-spacing:.14em;}
  .nav-links{display:none;align-items:center;gap:6px;}
  @media (min-width:1024px){.nav-links{display:flex;}}
  .nav-links a{
    position:relative;color:rgba(255,255,255,.78);font-size:15px;padding:8px 12px;border-radius:10px;
    transition:color .2s var(--ease),background .2s var(--ease);
  }
  .nav-links a::after{
    content:"";position:absolute;left:12px;right:12px;bottom:4px;height:2px;border-radius:2px;
    background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
  }
  .nav-links a:hover{color:#fff;background:rgba(255,255,255,.06);}
  .nav-links a:hover::after{transform:scaleX(1);}
  .nav-links a.active{color:#fff;background:rgba(255,255,255,.1);}
  .nav-links a.active::after{transform:scaleX(1);}
  .nav-actions{display:flex;align-items:center;gap:10px;}
  .icon-btn{
    width:40px;height:40px;border-radius:999px;border:1px solid rgba(255,255,255,.2);
    background:rgba(255,255,255,.08);color:#fff;display:none;align-items:center;justify-content:center;
    cursor:pointer;transition:background .2s var(--ease),transform .2s var(--ease);
  }
  @media (min-width:768px){.icon-btn{display:flex;}}
  .icon-btn:hover{background:rgba(255,255,255,.18);transform:translateY(-1px);}
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:46px;padding:0 22px;border-radius:999px;border:1px solid transparent;
    font-size:15px;font-weight:600;cursor:pointer;
    transition:transform .2s var(--ease),box-shadow .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
    white-space:nowrap;
  }
  .btn:active{transform:translateY(0) scale(.98);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-primary{
    background:var(--grad);background-size:160% 100%;color:#fff;
    box-shadow:0 14px 30px -14px rgba(255,46,136,.75);
  }
  .btn-primary:hover{transform:translateY(-2px);background-position:100% 0;box-shadow:0 24px 60px -20px rgba(255,46,136,.55);}
  .btn-ghost{
    background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.32);color:#fff;
    backdrop-filter:blur(8px);
  }
  .btn-ghost:hover{transform:translateY(-2px);background:rgba(255,255,255,.18);}
  .btn-outline{
    background:#fff;border-color:rgba(255,46,136,.45);color:#D81B70;
  }
  .btn-outline:hover{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--brand);}
  .btn-dark{background:var(--ink);color:#fff;}
  .btn-dark:hover{transform:translateY(-2px);box-shadow:0 20px 40px -22px rgba(20,16,31,.9);}
  .menu-btn{
    width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.22);
    background:rgba(255,255,255,.08);display:flex;align-items:center;justify-content:center;
    cursor:pointer;color:#fff;
  }
  @media (min-width:1024px){.menu-btn{display:none;}}
  .menu-btn span{display:block;width:16px;height:2px;background:#fff;border-radius:2px;position:relative;}
  .menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:#fff;border-radius:2px;}
  .menu-btn span::before{top:-5px;}
  .menu-btn span::after{top:5px;}

  /* 抽屉 */
  .drawer-mask{
    position:fixed;inset:0;background:rgba(20,16,31,.55);backdrop-filter:blur(2px);
    opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:90;
  }
  .drawer-mask.open{opacity:1;visibility:visible;}
  .drawer{
    position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:95;
    background:var(--ink);color:#fff;transform:translateX(100%);
    transition:transform .28s var(--ease);display:flex;flex-direction:column;padding:22px 20px 24px;
    overflow-y:auto;
  }
  .drawer.open{transform:translateX(0);}
  .drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px;}
  .drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid rgba(255,255,255,.2);background:transparent;color:#fff;cursor:pointer;font-size:18px;line-height:1;}
  .drawer a.drawer-link{
    display:flex;align-items:center;height:48px;padding:0 12px;border-radius:12px;
    color:rgba(255,255,255,.82);font-size:16px;border-bottom:1px solid rgba(255,255,255,.06);
  }
  .drawer a.drawer-link.active{color:#fff;background:rgba(255,255,255,.1);}
  .drawer-cta{margin-top:auto;padding-top:20px;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;overflow:hidden;color:#fff;
    min-height:70vh;
    display:flex;align-items:center;
    padding:96px 0 60px;
    background-color:var(--ink);
    background-image:
      linear-gradient(105deg,rgba(20,16,31,.94) 0%,rgba(20,16,31,.78) 42%,rgba(20,16,31,.28) 100%),
      linear-gradient(0deg,rgba(20,16,31,.8),rgba(20,16,31,.25)),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover,cover,cover;
    background-position:center,center,center;
  }
  @media (min-width:1024px){.hero{min-height:78vh;padding:120px 0 84px;}}
  .hero-glow{
    position:absolute;border-radius:50%;filter:blur(70px);opacity:.45;pointer-events:none;
  }
  .hero-glow.g1{width:360px;height:360px;background:rgba(255,46,136,.55);top:-90px;right:-60px;animation:sheen 7s ease-in-out infinite;}
  .hero-glow.g2{width:300px;height:300px;background:rgba(34,211,238,.42);bottom:-120px;left:-70px;}
  .hero-grid{
    position:relative;z-index:2;display:grid;gap:40px;align-items:center;
  }
  @media (min-width:1024px){.hero-grid{grid-template-columns:1.08fr .92fr;gap:56px;}}
  .hero-eyebrow{
    display:inline-flex;align-items:center;gap:10px;padding:7px 14px;border-radius:999px;
    background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
    font-size:13px;letter-spacing:.04em;color:rgba(255,255,255,.86);backdrop-filter:blur(8px);
  }
  .hero-eyebrow i{width:7px;height:7px;border-radius:999px;background:var(--accent);box-shadow:0 0 12px var(--accent);}
  .hero h1{
    margin-top:22px;
    font-size:clamp(28px,4.6vw,52px);line-height:1.12;font-weight:800;letter-spacing:-.02em;
    text-shadow:0 14px 40px rgba(0,0,0,.4);
  }
  .hero h1 em{
    font-style:normal;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .hero-sub{margin-top:18px;font-size:17px;line-height:1.75;color:rgba(255,255,255,.82);max-width:520px;}
  .hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;}
  .hero-stats{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:36px;max-width:560px;}
  @media (min-width:640px){.hero-stats{grid-template-columns:repeat(4,minmax(0,1fr));}}
  .stat{
    padding:14px 16px;border-radius:16px;background:rgba(255,255,255,.08);
    border:1px solid rgba(255,255,255,.16);backdrop-filter:blur(10px);
    transition:transform .2s var(--ease),background .2s var(--ease);
  }
  .stat:hover{transform:translateY(-3px);background:rgba(255,255,255,.14);}
  .stat b{
    display:block;font-family:Inter,system-ui,sans-serif;font-size:26px;font-weight:800;line-height:1.15;
    font-variant-numeric:tabular-nums;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  }
  .stat span{display:block;margin-top:4px;font-size:12.5px;color:rgba(255,255,255,.72);}
  .hero-card{
    position:relative;border-radius:26px;overflow:hidden;border:1px solid rgba(255,255,255,.2);
    box-shadow:0 40px 90px -40px rgba(0,0,0,.85);
  }
  .hero-card img{width:100%;height:100%;object-fit:cover;aspect-ratio:16/12;}
  .hero-card-tag{
    position:absolute;left:16px;bottom:16px;right:16px;
    padding:14px 16px;border-radius:16px;background:rgba(20,16,31,.62);
    backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.16);
    font-size:13.5px;color:rgba(255,255,255,.88);line-height:1.6;
  }
  .hero-card-tag strong{display:block;font-size:15px;color:#fff;margin-bottom:2px;font-weight:700;}

  /* ---------- 通用板块 ---------- */
  .section{padding:40px 0;}
  @media (min-width:768px){.section{padding:72px 0;}}
  @media (min-width:1024px){.section{padding:96px 0;}}
  .section-head{display:flex;flex-wrap:wrap;gap:16px;align-items:flex-end;justify-content:space-between;margin-bottom:32px;}
  @media (min-width:1024px){.section-head{margin-bottom:44px;}}
  .section-head h2{
    font-size:clamp(22px,2.6vw,34px);line-height:1.25;font-weight:700;letter-spacing:-.01em;
  }
  .section-head p{margin-top:10px;color:var(--muted);font-size:15.5px;max-width:620px;}
  .kicker{
    display:inline-flex;align-items:center;gap:8px;font-size:13px;font-weight:600;
    color:#C81E6B;letter-spacing:.06em;text-transform:uppercase;
  }
  .kicker::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad);}
  .text-link{
    display:inline-flex;align-items:center;gap:6px;font-size:14.5px;font-weight:600;color:#C81E6B;
    transition:gap .2s var(--ease),color .2s var(--ease);
  }
  .text-link:hover{gap:10px;color:var(--brand);}
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow);transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  }
  .card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
  .chip{
    display:inline-flex;align-items:center;gap:6px;padding:5px 12px;border-radius:999px;
    background:rgba(139,92,246,.12);color:#6D28D9;font-size:12.5px;font-weight:600;
  }
  .num-seq{
    font-family:Inter,system-ui,sans-serif;font-size:26px;font-weight:800;letter-spacing:-.02em;
    background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
    font-variant-numeric:tabular-nums;
  }

  /* ---------- 卖点 bento ---------- */
  .bento{display:grid;gap:20px;}
  @media (min-width:768px){.bento{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}
  @media (min-width:1024px){.bento{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;align-items:start;}}
  .bento-main{
    padding:26px;display:flex;flex-direction:column;gap:18px;
  }
  @media (min-width:1024px){.bento-main{grid-column:span 2;flex-direction:row;align-items:center;padding:30px;}}
  .bento-main .copy{flex:1 1 55%;}
  .bento-main figure{flex:1 1 45%;border-radius:20px;overflow:hidden;}
  .bento-main figure img{width:100%;aspect-ratio:16/11;object-fit:cover;transition:transform .4s var(--ease);}
  .bento-main:hover figure img{transform:scale(1.04);}
  .bento-side{padding:26px;display:flex;flex-direction:column;gap:14px;}
  @media (min-width:1024px){
    .bento-side:nth-child(2){margin-top:24px;}
    .bento-side:nth-child(3){margin-top:48px;}
  }
  .bento h3{font-size:19px;font-weight:700;line-height:1.4;}
  .bento p{color:var(--muted);font-size:15px;line-height:1.8;}
  .feature-list li{
    position:relative;padding-left:22px;font-size:15px;color:var(--muted);line-height:1.8;
  }
  .feature-list li+li{margin-top:8px;}
  .feature-list li::before{
    content:"";position:absolute;left:0;top:11px;width:10px;height:10px;border-radius:4px;background:var(--grad);
  }
  .card-accent{position:relative;}
  .card-accent::before{
    content:"";position:absolute;inset:0;border-radius:inherit;padding:1px;background:var(--grad);
    -webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);
    -webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;opacity:.7;
  }

  /* ---------- 场景 ---------- */
  .scene{display:grid;gap:28px;align-items:center;}
  @media (min-width:1024px){.scene{grid-template-columns:1fr 1fr;gap:56px;}}
  .scene+.scene{margin-top:56px;}
  @media (min-width:1024px){.scene+.scene{margin-top:88px;}}
  .scene-media{border-radius:24px;overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line);}
  .scene-media img{width:100%;aspect-ratio:16/10;object-fit:cover;transition:transform .45s var(--ease);}
  .scene-media:hover img{transform:scale(1.03);}
  .scene h3{font-size:clamp(20px,2.1vw,26px);font-weight:700;line-height:1.35;letter-spacing:-.01em;}
  .scene .desc{margin-top:14px;color:var(--muted);font-size:15.5px;}
  .scene ul{margin-top:20px;display:grid;gap:12px;}
  .scene li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;color:var(--text);}
  .scene li i{
    flex:0 0 auto;width:20px;height:20px;border-radius:7px;background:var(--grad);margin-top:5px;
    box-shadow:0 8px 18px -10px rgba(255,46,136,.9);
  }
  @media (min-width:1024px){
    .scene.reverse .scene-media{order:2;}
    .scene.reverse .scene-copy{order:1;}
    .scene:not(.reverse) .scene-media{order:2;}
    .scene:not(.reverse) .scene-copy{order:1;}
    .scene.rev-alt .scene-media{order:1;}
    .scene.rev-alt .scene-copy{order:2;}
  }

  /* ---------- 社会认同 ---------- */
  .proof-band{background:linear-gradient(180deg,#FFFFFF 0%,#F3F1FA 100%);border-top:1px solid var(--line);border-bottom:1px solid var(--line);}
  .stat-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
  @media (min-width:1024px){.stat-row{grid-template-columns:repeat(4,minmax(0,1fr));gap:24px;}}
  .stat-card{
    padding:22px;border-radius:20px;border:1px solid var(--line);background:#fff;
    transition:transform .22s var(--ease),box-shadow .22s var(--ease);
  }
  .stat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);}
  .stat-card.dark{background:var(--ink);color:#fff;border-color:transparent;}
  .stat-card.dark b{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;}
  .stat-card.dark span{color:rgba(255,255,255,.68);}
  .stat-card.tint{background:#F1EDFF;border-color:rgba(139,92,246,.18);}
  .stat-card b{
    display:block;font-family:Inter,system-ui,sans-serif;font-size:32px;font-weight:800;line-height:1.1;
    color:#D81B70;font-variant-numeric:tabular-nums;
  }
  .stat-card span{display:block;margin-top:8px;font-size:13.5px;color:var(--muted);}
  .review-wrap{
    display:grid;grid-auto-flow:column;grid-auto-columns:84%;gap:16px;overflow-x:auto;
    padding:4px 4px 16px;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;
  }
  @media (min-width:768px){.review-wrap{grid-auto-flow:row;grid-auto-columns:auto;grid-template-columns:repeat(3,minmax(0,1fr));overflow:visible;gap:24px;padding:0;}}
  .review{padding:24px;border-radius:20px;background:#fff;border:1px solid var(--line);scroll-snap-align:start;display:flex;flex-direction:column;gap:14px;box-shadow:var(--shadow);}
  .review .stars{display:flex;gap:4px;color:var(--warm);font-size:14px;letter-spacing:2px;}
  .review p{font-size:15px;line-height:1.8;color:var(--text);}
  .review footer{margin-top:auto;display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px solid var(--line);}
  .avatar{
    width:38px;height:38px;border-radius:999px;background:var(--grad);color:#fff;
    display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;
  }
  .review footer b{display:block;font-size:14.5px;font-weight:600;}
  .review footer em{font-style:normal;font-size:12.5px;color:var(--muted);}
  .media-strip{
    margin-top:32px;padding:16px 20px;border-radius:16px;border:1px dashed rgba(20,16,31,.16);
    display:flex;flex-wrap:wrap;gap:12px 32px;align-items:center;justify-content:center;
    color:#8B849C;font-size:13.5px;letter-spacing:.04em;background:rgba(255,255,255,.6);
  }
  .media-strip span{white-space:nowrap;}

  /* ---------- 最新信息 ---------- */
  .post-grid{display:grid;gap:20px;}
  @media (min-width:640px){.post-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}}
  @media (min-width:1024px){.post-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:28px;}}
  .post-card{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:22px;
    overflow:hidden;box-shadow:var(--shadow);
    transition:transform .24s var(--ease),box-shadow .24s var(--ease);
  }
  .post-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
  .post-cover{position:relative;overflow:hidden;background:var(--grad);aspect-ratio:16/9;}
  .post-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease);}
  .post-card:hover .post-cover img{transform:scale(1.03);}
  .post-cover .chip{position:absolute;left:12px;top:12px;background:rgba(20,16,31,.68);color:#fff;backdrop-filter:blur(6px);}
  .post-body{padding:20px 20px 18px;display:flex;flex-direction:column;gap:10px;flex:1 1 auto;}
  .post-body h3{
    font-size:17px;font-weight:700;line-height:1.5;
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .post-body p{
    font-size:14.5px;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:14px;border-top:1px solid var(--line);
    display:flex;align-items:center;justify-content:space-between;gap:10px;
    font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;
  }
  .post-meta .arrow{color:#C81E6B;font-weight:700;transition:transform .2s var(--ease);}
  .post-card:hover .post-meta .arrow{transform:translateX(4px);}
  .empty-state{
    grid-column:1/-1;text-align:center;padding:56px 24px;border-radius:22px;
    background:#fff;border:1px dashed rgba(20,16,31,.16);
  }
  .empty-state .dot{width:46px;height:46px;border-radius:14px;background:var(--grad);margin:0 auto 16px;opacity:.75;}
  .empty-state p{color:var(--muted);font-size:15px;margin-bottom:18px;}

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:12px;max-width:900px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
    transition:box-shadow .22s var(--ease);
  }
  .faq-item[open]{box-shadow:var(--shadow);}
  .faq-item summary{
    list-style:none;cursor:pointer;padding:18px 22px;font-size:17px;font-weight:600;
    display:flex;align-items:center;justify-content:space-between;gap:16px;
  }
  .faq-item summary::-webkit-details-marker{display:none;}
  .faq-item summary .plus{
    flex:0 0 auto;width:24px;height:24px;border-radius:8px;border:1px solid rgba(255,46,136,.35);
    color:#C81E6B;display:flex;align-items:center;justify-content:center;font-size:16px;line-height:1;
    transition:transform .2s var(--ease),background .2s var(--ease),color .2s var(--ease);
  }
  .faq-item[open] summary .plus{transform:rotate(45deg);background:var(--grad);color:#fff;border-color:transparent;}
  .faq-item .answer{padding:0 22px 20px;font-size:15px;line-height:1.8;color:var(--muted);}

  /* ---------- CTA / 表单 ---------- */
  .cta-section{
    position:relative;overflow:hidden;color:#fff;border-radius:28px;
    background-color:var(--ink);
    background-image:
      linear-gradient(115deg,rgba(20,16,31,.95) 0%,rgba(20,16,31,.82) 48%,rgba(30,23,51,.6) 100%),
      url('/assets/images/backpic/back-3.webp');
    background-size:cover,cover;background-position:center,center;
    padding:36px 24px;
  }
  @media (min-width:1024px){.cta-section{padding:56px 48px;}}
  .cta-grid{display:grid;gap:32px;}
  @media (min-width:1024px){.cta-grid{grid-template-columns:.92fr 1.08fr;gap:56px;align-items:start;}}
  .cta-section h2{font-size:clamp(22px,2.6vw,32px);font-weight:700;line-height:1.3;}
  .cta-section .lead{margin-top:14px;color:rgba(255,255,255,.78);font-size:15.5px;}
  .cta-points{margin-top:24px;display:grid;gap:12px;}
  .cta-points li{display:flex;gap:10px;font-size:14.5px;color:rgba(255,255,255,.82);}
  .cta-points li i{flex:0 0 auto;width:18px;height:18px;border-radius:6px;background:var(--grad);margin-top:5px;}
  .form-card{
    background:rgba(255,255,255,.96);border-radius:22px;padding:24px;color:var(--text);
    border:1px solid rgba(255,255,255,.5);box-shadow:0 30px 70px -30px rgba(0,0,0,.7);
  }
  @media (min-width:768px){.form-card{padding:28px;}}
  .form-grid{display:grid;gap:16px;}
  @media (min-width:640px){.form-grid{grid-template-columns:1fr 1fr;}}
  .field{display:flex;flex-direction:column;gap:8px;}
  .field.full{grid-column:1/-1;}
  .field label{font-size:13.5px;font-weight:600;color:#3B3350;}
  .field input,.field select,.field textarea{
    height:48px;border-radius:14px;border:1px solid rgba(20,16,31,.12);background:#F7F6FB;
    padding:0 14px;font-size:15px;transition:border-color .2s var(--ease),background .2s var(--ease),box-shadow .2s var(--ease);
  }
  .field textarea{height:112px;padding:12px 14px;resize:vertical;line-height:1.7;}
  .field input:focus,.field select:focus,.field textarea:focus{
    outline:none;background:#fff;border-color:var(--brand);box-shadow:0 0 0 2px rgba(255,46,136,.28);
  }
  .form-note{font-size:12.5px;color:var(--muted);margin-top:12px;}
  .form-msg{margin-top:14px;font-size:13.5px;color:#0E9F6E;display:none;}
  .form-msg.show{display:block;}
  .form-msg.error{color:#E5484D;}

  /* ---------- 页脚 ---------- */
  .site-footer{
    position:relative;margin-top:40px;background:var(--ink);color:rgba(255,255,255,.72);
    padding:48px 0 0;
  }
  @media (min-width:1024px){.site-footer{margin-top:72px;padding:64px 0 0;}}
  .site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);opacity:.7;}
  .footer-grid{display:grid;gap:32px;grid-template-columns:repeat(2,minmax(0,1fr));}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:40px;}}
  .footer-brand{grid-column:1/-1;}
  @media (min-width:1024px){.footer-brand{grid-column:auto;}}
  .footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:340px;}
  .site-footer h3{font-size:15px;font-weight:700;color:#fff;margin-bottom:16px;}
  .site-footer li+li{margin-top:10px;}
  .site-footer a{
    position:relative;font-size:14px;color:rgba(255,255,255,.66);
    transition:color .2s var(--ease);
  }
  .site-footer a::after{
    content:"";position:absolute;left:0;bottom:-2px;height:2px;width:100%;background:var(--brand);
    transform:scaleX(0);transform-origin:left;transition:transform .22s var(--ease);
  }
  .site-footer a:hover{color:var(--brand);}
  .site-footer a:hover::after{transform:scaleX(1);}
  .footer-bottom{
    margin-top:40px;padding:20px 0 26px;border-top:1px solid rgba(255,255,255,.1);
    display:flex;flex-wrap:wrap;gap:12px;align-items:center;justify-content:space-between;
    font-size:12.5px;color:rgba(255,255,255,.5);
  }
  .to-top{
    position:fixed;right:20px;bottom:88px;width:44px;height:44px;border-radius:999px;z-index:70;
    background:rgba(20,16,31,.72);backdrop-filter:blur(10px);color:#fff;border:1px solid rgba(255,255,255,.2);
    display:flex;align-items:center;justify-content:center;cursor:pointer;
    opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s,transform .24s var(--ease);
  }
  .to-top.show{opacity:1;visibility:visible;}
  .to-top:hover{transform:translateY(-3px);background:rgba(20,16,31,.92);}

  /* ---------- 底部转化条 ---------- */
  .sticky-bar{
    position:fixed;left:0;right:0;bottom:0;z-index:75;height:60px;
    background:rgba(20,16,31,.94);backdrop-filter:blur(14px);
    border-top:1px solid rgba(255,255,255,.12);
    padding-bottom:env(safe-area-inset-bottom);
  }
  @media (min-width:768px){.sticky-bar{height:64px;}}
  .sticky-bar::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);}
  .sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:14px;height:100%;}
  .sticky-text{color:#fff;font-size:14px;font-weight:600;line-height:1.4;}
  .sticky-text small{display:block;font-size:12px;font-weight:400;color:rgba(255,255,255,.6);}

  /* 入场动画 */
  .reveal{opacity:0;transform:translateY(14px);transition:opacity .5s var(--ease),transform .5s var(--ease);}
  .reveal.in{opacity:1;transform:none;}
  @media (prefers-reduced-motion:reduce){
    *{animation:none!important;transition-duration:.01ms!important;}
    .reveal{opacity:1;transform:none;}
    html{scroll-behavior:auto;}
  }

/* roulang page: article */
:root{
  --ink:#14101F;
  --ink-2:#1E1733;
  --brand:#FF2E88;
  --brand-2:#8B5CF6;
  --accent:#22D3EE;
  --warm:#FFB020;
  --bg:#F7F6FB;
  --card:#FFFFFF;
  --line:rgba(20,16,31,.08);
  --text:#1B1730;
  --muted:#5B5470;
  --grad:linear-gradient(120deg,#FF2E88 0%,#8B5CF6 52%,#22D3EE 100%);
  --grad-soft:linear-gradient(120deg,rgba(255,46,136,.16),rgba(139,92,246,.14),rgba(34,211,238,.16));
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --shadow:0 10px 30px -12px rgba(20,16,31,.18);
  --shadow-hover:0 24px 60px -20px rgba(255,46,136,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body.site-body{
  margin:0;padding:0;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;overflow-x:hidden;
}
.site-body img{max-width:100%;display:block;border-style:none}
.site-body a{color:inherit;text-decoration:none}
.site-body button{font-family:inherit;cursor:pointer}
.site-body h1,.site-body h2,.site-body h3,.site-body h4{margin:0}
.site-body p{margin:0}
.site-body ul,.site-body ol{margin:0;padding:0;list-style:none}
body.drawer-open{overflow:hidden}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum"}

::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#EDEAF6}
::-webkit-scrollbar-thumb{background:linear-gradient(180deg,#FF2E88,#8B5CF6);border-radius:999px;border:2px solid #EDEAF6}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

.grad-text{background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.grad-line{height:1px;width:100%;background:var(--grad);opacity:.5;border:0}

/* 阅读进度条 */
.read-bar{position:fixed;top:0;left:0;height:3px;width:0;background:var(--grad);z-index:90;transition:width .12s linear}

/* 导航 */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;height:68px;
  background:rgba(20,16,31,.32);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  box-shadow:0 10px 34px -22px rgba(0,0,0,.65);
  transition:background .24s var(--ease),height .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-solid{background:rgba(20,16,31,.92);height:60px;box-shadow:0 18px 44px -22px rgba(20,16,31,.75)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;gap:18px;height:100%}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:grid;grid-template-columns:repeat(2,1fr);grid-template-rows:repeat(2,1fr);gap:3px;padding:7px;
  box-shadow:0 8px 20px -10px rgba(255,46,136,.85);
}
.logo-mark span{background:rgba(255,255,255,.95);border-radius:2px;display:block}
.logo-mark span:nth-child(1){grid-column:span 2}
.logo-mark span:nth-child(3){opacity:.62}
.logo-text{display:flex;flex-direction:column;color:#fff;font-weight:800;font-size:16px;line-height:1.1;letter-spacing:.01em}
.logo-text small{font-weight:400;font-size:10px;letter-spacing:.18em;color:rgba(255,255,255,.62);margin-top:3px}
.nav-links{display:none}
@media (min-width:1024px){
  .nav-links{display:flex;align-items:center;gap:28px}
}
.nav-links a{
  position:relative;font-size:15px;color:rgba(255,255,255,.76);padding:6px 2px;
  transition:color .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:0;right:0;bottom:-4px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:#fff}
.nav-links a:hover::after,.nav-links a.active::after{transform:scaleX(1)}
.nav-links a.active{color:#fff;font-weight:600}
.nav-actions{display:flex;align-items:center;gap:10px}
.icon-btn{
  display:none;align-items:center;justify-content:center;width:40px;height:40px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);color:#fff;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
@media (min-width:768px){.icon-btn{display:inline-flex}}
.icon-btn:hover{background:rgba(255,255,255,.2);transform:translateY(-2px)}
.menu-btn{
  display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.18);
}
@media (min-width:1024px){.menu-btn{display:none}}
.menu-btn span{position:relative;width:16px;height:2px;background:#fff;border-radius:2px;display:block}
.menu-btn span::before,.menu-btn span::after{content:"";position:absolute;left:0;width:16px;height:2px;background:#fff;border-radius:2px}
.menu-btn span::before{top:-5px}
.menu-btn span::after{top:5px}

/* 按钮 */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:0;
  font-size:15px;font-weight:600;letter-spacing:.01em;
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),background-position .3s var(--ease),color .22s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn-primary{background:var(--grad);background-size:170% 100%;background-position:0 0;color:#fff;box-shadow:0 12px 30px -14px rgba(255,46,136,.7)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 24px 60px -20px rgba(255,46,136,.62);background-position:100% 0}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{background:rgba(255,255,255,.1);border:1px solid var(--brand);color:var(--brand)}
.btn-ghost:hover{transform:translateY(-2px);background:rgba(255,46,136,.08);box-shadow:0 18px 40px -22px rgba(255,46,136,.5)}
.btn-quiet{background:#fff;border:1px solid var(--line);color:var(--text);box-shadow:var(--shadow)}
.btn-quiet:hover{transform:translateY(-2px);border-color:rgba(255,46,136,.4);color:var(--brand)}
.btn-sm{height:40px;padding:0 18px;font-size:14px}

/* 移动抽屉 */
.drawer-mask{position:fixed;inset:0;background:rgba(20,16,31,.62);opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s;z-index:70}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;z-index:80;
  background:var(--ink);padding:70px 20px calc(24px + env(safe-area-inset-bottom));
  transform:translateX(100%);transition:transform .28s var(--ease);overflow-y:auto;
}
.drawer.open{transform:none}
.drawer nav a{display:block;line-height:48px;font-size:16px;color:rgba(255,255,255,.84);border-bottom:1px solid rgba(255,255,255,.09)}
.drawer nav a:hover{color:#fff}
.drawer .drawer-cta{margin-top:22px;width:100%}

/* 文章头 */
.article-hero{
  position:relative;padding:118px 0 26px;background:
    radial-gradient(680px 320px at 88% -10%,rgba(139,92,246,.18),transparent 62%),
    radial-gradient(520px 280px at 4% 0%,rgba(255,46,136,.14),transparent 60%),
    var(--bg);
  overflow:hidden;
}
.article-hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;opacity:.5;
  background-image:radial-gradient(rgba(20,16,31,.07) 1px,transparent 1px);
  background-size:22px 22px;
  -webkit-mask-image:linear-gradient(180deg,#000,transparent 78%);
  mask-image:linear-gradient(180deg,#000,transparent 78%);
}
.article-hero .container{position:relative;z-index:2}
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);margin-bottom:18px}
.breadcrumb a{color:var(--muted);transition:color .2s var(--ease)}
.breadcrumb a:hover{color:var(--brand)}
.breadcrumb .sep{color:rgba(20,16,31,.28)}
.breadcrumb .current{
  color:var(--brand-2);max-width:min(52vw,420px);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.article-title{
  font-size:clamp(28px,4.2vw,46px);line-height:1.16;font-weight:800;letter-spacing:-.02em;
  color:var(--ink);max-width:900px;
}
.article-meta{display:flex;flex-wrap:wrap;align-items:center;gap:12px;margin-top:20px;font-size:13.5px;color:var(--muted)}
.article-meta .dot{width:4px;height:4px;border-radius:999px;background:rgba(20,16,31,.22)}
.chip{
  display:inline-flex;align-items:center;height:26px;padding:0 12px;border-radius:999px;
  background:rgba(139,92,246,.12);color:#6D3FD6;font-size:12.5px;font-weight:600;
}
.chip-warm{background:rgba(255,176,32,.16);color:#9A6400}
.hero-line{margin-top:22px;height:1px;background:var(--grad);opacity:.42}

/* 封面 */
.article-cover-wrap{padding:26px 0 0}
.article-cover{
  margin:0 auto;max-width:1000px;border-radius:20px;overflow:hidden;
  box-shadow:var(--shadow);background:var(--grad-soft);position:relative;
}
.article-cover img{width:100%;aspect-ratio:16/9;object-fit:cover}
.article-cover figcaption{font-size:13px;color:var(--muted);text-align:center;padding:12px 16px 0}

/* 正文 */
.article-section{padding:34px 0 8px}
.article-wrap{max-width:800px;margin:0 auto}
.article-body{font-size:17.5px;line-height:1.9;color:var(--text);text-align:left}
.article-body p{margin:0 0 1.2em}
.article-body h2{
  position:relative;font-size:clamp(21px,2.4vw,27px);font-weight:700;line-height:1.35;
  color:var(--ink);margin:48px 0 18px;padding-left:16px;
}
.article-body h2::before{
  content:"";position:absolute;left:0;top:.28em;bottom:.28em;width:4px;border-radius:4px;background:var(--grad);
}
.article-body h3{font-size:19px;font-weight:600;color:#6D3FD6;margin:32px 0 12px;line-height:1.5}
.article-body h4{font-size:17px;font-weight:600;color:var(--ink);margin:24px 0 10px}
.article-body strong{font-weight:700;color:var(--ink)}
.article-body a{color:var(--brand);border-bottom:1px solid rgba(255,46,136,.35);transition:border-color .2s var(--ease)}
.article-body a:hover{border-bottom-color:var(--brand)}
.article-body blockquote{
  position:relative;margin:26px 0;padding:18px 22px 18px 26px;background:#F1EEFB;
  border-radius:14px;color:#3A3352;font-size:16.5px;
}
.article-body blockquote::before{
  content:"";position:absolute;left:0;top:14px;bottom:14px;width:4px;border-radius:4px;background:var(--grad);
}
.article-body ul{margin:0 0 1.2em}
.article-body ul li{position:relative;padding-left:22px;margin-bottom:.5em}
.article-body ul li::before{
  content:"";position:absolute;left:0;top:.66em;width:8px;height:8px;border-radius:3px;background:var(--grad);
}
.article-body ol{counter-reset:li;margin:0 0 1.2em}
.article-body ol li{counter-increment:li;position:relative;padding-left:36px;margin-bottom:.55em}
.article-body ol li::before{
  content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.1em;font-weight:700;
  font-size:15px;color:var(--brand);font-variant-numeric:tabular-nums;
}
.article-body img{border-radius:16px;margin:24px 0;width:100%;height:auto}
.article-body figure{margin:24px 0}
.article-body figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:8px}
.article-body table{
  width:100%;border-collapse:collapse;margin:24px 0;font-size:15.5px;display:block;overflow-x:auto;
}
.article-body th{background:#F1EEFB;color:var(--ink);font-weight:600;text-align:left}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;white-space:nowrap}
.article-body pre{
  background:var(--ink);color:#EDEAF6;padding:18px 20px;border-radius:14px;overflow-x:auto;
  font-size:14px;line-height:1.7;margin:24px 0;
}
.article-body code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
.article-body :not(pre) > code{background:#F1EEFB;color:#7A2C9B;padding:2px 7px;border-radius:6px;font-size:.92em}
.article-body hr{border:0;height:1px;background:var(--grad);opacity:.36;margin:38px 0}

.empty-state{
  background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);box-shadow:var(--shadow);
  padding:44px 28px;text-align:center;
}
.empty-state .mark{
  width:52px;height:52px;border-radius:16px;background:var(--grad-soft);margin:0 auto 16px;
  display:flex;align-items:center;justify-content:center;color:var(--brand-2);
}
.empty-state h2{font-size:22px;font-weight:700;color:var(--ink);margin-bottom:10px}
.empty-state p{font-size:15px;color:var(--muted);margin-bottom:22px}

/* 标签 */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:36px;padding-top:24px;border-top:1px solid var(--line)}
.tag{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  background:#fff;border:1px solid var(--line);font-size:13px;color:var(--muted);
  transition:transform .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.tag:hover{transform:translateY(-2px);color:var(--brand);border-color:rgba(255,46,136,.4);box-shadow:var(--shadow)}

/* 上下篇 */
.prevnext{padding:52px 0 0}
.prevnext-grid{display:grid;grid-template-columns:1fr;gap:18px}
@media (min-width:768px){.prevnext-grid{grid-template-columns:1fr 1fr}}
.pn-card{
  display:flex;gap:16px;align-items:center;background:#fff;border:1px solid var(--line);
  border-radius:var(--r-md);padding:18px;box-shadow:var(--shadow);
  transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.pn-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(255,46,136,.28)}
.pn-thumb{
  width:96px;height:72px;border-radius:12px;overflow:hidden;flex-shrink:0;background:var(--grad-soft);
}
.pn-thumb img{width:100%;height:100%;object-fit:cover}
.pn-label{font-size:12.5px;color:var(--brand-2);font-weight:600;letter-spacing:.06em}
.pn-title{font-size:16px;font-weight:600;color:var(--ink);line-height:1.55;margin-top:6px;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.pn-right{justify-content:flex-end;text-align:right}

/* 相关推荐 */
.related{padding:64px 0 0}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:18px;margin-bottom:26px}
.sec-head h2{font-size:clamp(22px,2.6vw,30px);font-weight:700;color:var(--ink);line-height:1.25}
.sec-head p{font-size:14.5px;color:var(--muted);margin-top:6px}
.more-link{font-size:14.5px;font-weight:600;color:var(--brand);white-space:nowrap;transition:transform .2s var(--ease)}
.more-link:hover{transform:translateX(3px)}
.rel-grid{display:grid;grid-template-columns:1fr;gap:20px}
@media (min-width:900px){.rel-grid{grid-template-columns:1.15fr 1fr}}
.rel-feature{
  display:block;background:#fff;border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;
  box-shadow:var(--shadow);transition:transform .24s var(--ease),box-shadow .24s var(--ease);
}
.rel-feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover)}
.rel-feature .pic{aspect-ratio:16/10;overflow:hidden;background:var(--grad-soft)}
.rel-feature .pic img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.rel-feature:hover .pic img{transform:scale(1.04)}
.rel-feature .body{padding:22px 24px 24px}
.rel-feature h3{font-size:19px;font-weight:700;color:var(--ink);line-height:1.5}
.rel-feature p{font-size:14.5px;color:var(--muted);margin-top:10px;line-height:1.75;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-col{display:grid;gap:20px}
.rel-mini{
  display:flex;gap:14px;background:#fff;border:1px solid var(--line);border-radius:var(--r-md);padding:14px;
  box-shadow:var(--shadow);transition:transform .24s var(--ease),box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.rel-mini:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);border-color:rgba(139,92,246,.3)}
.rel-mini .pic{width:112px;height:84px;border-radius:12px;overflow:hidden;flex-shrink:0;background:var(--grad-soft)}
.rel-mini .pic img{width:100%;height:100%;object-fit:cover}
.rel-mini h3{font-size:15.5px;font-weight:600;color:var(--ink);line-height:1.5;
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.rel-mini .meta{font-size:12.5px;color:var(--muted);margin-top:8px}

/* 返回入口 */
.back-entry{padding:44px 0 88px;text-align:center}
.back-entry .hint{font-size:14px;color:var(--muted);margin-bottom:16px}

/* 页脚 */
.site-footer{position:relative;background:var(--ink);color:rgba(255,255,255,.72);padding-top:0}
.footer-line{height:1px;background:var(--grad);opacity:.85}
.footer-main{display:grid;grid-template-columns:1fr;gap:34px;padding:56px 0 40px}
@media (min-width:640px){.footer-main{grid-template-columns:1fr 1fr}}
@media (min-width:1024px){.footer-main{grid-template-columns:1.4fr 1fr 1fr 1.1fr;gap:44px}}
.footer-brand .logo{margin-bottom:16px}
.footer-brand p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.62);max-width:330px}
.footer-col h4{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px}
.footer-col a{display:block;font-size:14px;color:rgba(255,255,255,.66);line-height:2.2;
  transition:color .2s var(--ease),padding-left .2s var(--ease);border-bottom:2px solid transparent}
.footer-col a:hover{color:var(--brand);padding-left:4px;border-bottom-color:rgba(255,46,136,.5)}
.footer-col li{list-style:none}
.footer-contact p{font-size:14px;color:rgba(255,255,255,.62);line-height:2}
.footer-contact b{color:#fff;font-weight:600}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);padding:20px 0 calc(20px + env(safe-area-inset-bottom));
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px;font-size:13px;
}
.footer-bottom span{color:rgba(255,255,255,.5)}
.footer-bottom .top-link{color:rgba(255,255,255,.72);transition:color .2s var(--ease)}
.footer-bottom .top-link:hover{color:var(--brand)}

/* 回到顶部 */
.to-top{
  position:fixed;right:20px;bottom:24px;width:44px;height:44px;border-radius:999px;z-index:50;
  background:rgba(255,255,255,.92);border:1px solid var(--line);box-shadow:var(--shadow);
  display:flex;align-items:center;justify-content:center;color:var(--ink);
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s;
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);
}
.to-top.show{opacity:1;visibility:visible;transform:none}
.to-top:hover{color:var(--brand);border-color:rgba(255,46,136,.4)}

@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}

/* roulang page: category1 */
:root{
  --ink:#14101F; --ink-2:#1E1733; --brand:#FF2E88; --brand-2:#8B5CF6; --accent:#22D3EE; --warm:#FFB020;
  --bg:#F7F6FB; --card:#FFFFFF; --text:#1B1730; --muted:#5B5470; --line:rgba(20,16,31,.08);
  --grad:linear-gradient(120deg,#FF2E88 0%,#8B5CF6 52%,#22D3EE 100%);
  --shadow-sm:0 10px 30px -12px rgba(20,16,31,.18);
  --shadow-lg:0 24px 60px -20px rgba(255,46,136,.28);
  --r-lg:24px; --r-md:18px; --r-sm:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
.site-body{
  margin:0;padding-bottom:88px;background:var(--bg);color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;line-height:1.85;overflow-x:hidden;-webkit-font-smoothing:antialiased;
}
.site-body img{max-width:100%;display:block}
.site-body a{color:inherit;text-decoration:none}
.site-body button,.site-body input,.site-body textarea,.site-body select{font:inherit;color:inherit}
.site-body h1,.site-body h2,.site-body h3,.site-body h4,.site-body p,.site-body ul,.site-body ol{margin:0;padding:0}
.site-body ul,.site-body ol{list-style:none}
.num{font-variant-numeric:tabular-nums;font-family:Inter,"SF Pro Display",system-ui,sans-serif}

.container{width:100%;max-width:1240px;margin:0 auto;padding-left:20px;padding-right:20px}
@media (min-width:1024px){.container{padding-left:32px;padding-right:32px}}

/* ---------- Header / Nav ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:70;height:68px;
  background:rgba(20,16,31,.34);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  box-shadow:0 8px 30px -18px rgba(0,0,0,.6);
  transition:background .24s var(--ease),height .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.solid{background:rgba(20,16,31,.94);height:60px;box-shadow:0 14px 40px -22px rgba(0,0,0,.8)}
.nav-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.logo{display:flex;align-items:center;gap:11px;color:#fff;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;gap:3px;flex:0 0 auto;
  box-shadow:0 8px 22px -10px rgba(255,46,136,.85);
}
.logo-mark span{display:block;width:3px;border-radius:2px;background:#fff;opacity:.95}
.logo-mark span:nth-child(1){height:9px}
.logo-mark span:nth-child(2){height:15px}
.logo-mark span:nth-child(3){height:6px}
.logo-text{display:flex;flex-direction:column;line-height:1.15;font-weight:800;font-size:17px;letter-spacing:-.01em}
.logo-text small{font-size:11px;font-weight:500;color:rgba(255,255,255,.58);letter-spacing:.03em;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{
  position:relative;display:inline-block;padding:9px 13px;border-radius:999px;
  font-size:15px;color:rgba(255,255,255,.76);transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.09)}
.nav-links a.active{color:#fff;font-weight:600;background:rgba(255,46,136,.18)}
.nav-links a.active::after{
  content:"";position:absolute;left:13px;right:13px;bottom:3px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:grid;place-items:center;cursor:pointer;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);color:#fff;
  transition:background .2s var(--ease),transform .2s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.menu-btn{
  display:none;width:42px;height:42px;border-radius:12px;cursor:pointer;
  border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);
  place-items:center;position:relative;
}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:50%;transform:translateX(-50%);
  width:18px;height:2px;border-radius:2px;background:#fff;transition:all .25s var(--ease);
}
.menu-btn span{top:50%;margin-top:-1px}
.menu-btn span::before{top:-6px;left:0;transform:none}
.menu-btn span::after{top:6px;left:0;transform:none}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;border:1px solid transparent;
  font-size:15px;font-weight:700;cursor:pointer;white-space:nowrap;
  transition:transform .2s var(--ease),box-shadow .2s var(--ease),background-position .35s var(--ease),background .2s var(--ease);
}
.btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.btn:active{transform:translateY(0) scale(.98)}
.btn-primary{background:var(--grad);background-size:170% 100%;color:#fff;box-shadow:var(--shadow-sm)}
.btn-primary:hover{transform:translateY(-2px);background-position:100% 0;box-shadow:var(--shadow-lg)}
.btn-glass{background:rgba(255,255,255,.09);border-color:rgba(255,255,255,.26);color:#fff}
.btn-glass:hover{transform:translateY(-2px);background:rgba(255,255,255,.18)}
.btn-outline{background:#fff;border-color:rgba(255,46,136,.42);color:var(--brand)}
.btn-outline:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}
.btn-sm{height:38px;padding:0 18px;font-size:14px}
.btn-block{width:100%}

/* ---------- Drawer ---------- */
.overlay{
  position:fixed;inset:0;z-index:88;background:rgba(20,16,31,.62);
  opacity:0;pointer-events:none;transition:opacity .28s var(--ease);
}
.overlay.show{opacity:1;pointer-events:auto}
.drawer{
  position:fixed;top:0;right:0;z-index:92;height:100%;width:84vw;max-width:360px;
  background:var(--ink);color:#fff;transform:translateX(102%);
  transition:transform .3s var(--ease);display:flex;flex-direction:column;
  padding:24px 22px calc(24px + env(safe-area-inset-bottom));
  box-shadow:-30px 0 60px -30px rgba(0,0,0,.8);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}
.drawer-head strong{font-size:16px}
.drawer-close{width:38px;height:38px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.07);color:#fff;cursor:pointer}
.drawer nav{display:flex;flex-direction:column;margin-top:6px}
.drawer nav a{
  display:flex;align-items:center;height:48px;padding:0 12px;border-radius:12px;
  color:rgba(255,255,255,.84);border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer nav a.active{color:#fff;background:rgba(255,46,136,.18)}
.drawer nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.drawer .btn{margin-top:auto}

/* ---------- Hero ---------- */
.cat-hero{position:relative;overflow:hidden;padding:150px 0 76px;background:linear-gradient(140deg,#14101F 0%,#1E1733 58%,#2A1B4A 100%)}
.cat-hero::before{
  content:"";position:absolute;inset:0;opacity:.3;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
}
.cat-hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(118deg,rgba(20,16,31,.96) 0%,rgba(20,16,31,.74) 48%,rgba(30,23,51,.42) 100%);
}
.hero-glow{
  position:absolute;width:540px;height:540px;right:-120px;top:-180px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,136,.42) 0%,rgba(139,92,246,.18) 45%,transparent 70%);
  filter:blur(12px);pointer-events:none;
}
.hero-glow.two{
  left:-160px;right:auto;top:auto;bottom:-260px;width:460px;height:460px;
  background:radial-gradient(circle,rgba(34,211,238,.28) 0%,transparent 68%);
}
.cat-hero .container{position:relative;z-index:2}
.crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:rgba(255,255,255,.62);margin-bottom:20px}
.crumbs a{color:rgba(255,255,255,.72)}
.crumbs a:hover{color:#fff}
.crumbs .sep{color:rgba(255,255,255,.32)}
.crumbs .cur{color:#fff;font-weight:600}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:999px;
  font-size:13px;color:#fff;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  margin-bottom:18px;
}
.hero-tag i{width:7px;height:7px;border-radius:50%;background:var(--accent);display:block;box-shadow:0 0 0 4px rgba(34,211,238,.18)}
.hero-h1{
  font-size:clamp(28px,4.6vw,50px);line-height:1.14;font-weight:800;letter-spacing:-.02em;color:#fff;max-width:16em;
}
.hero-h1 em{font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-lead{margin-top:18px;font-size:17px;line-height:1.8;color:rgba(255,255,255,.74);max-width:44em}
.hero-stats{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.hstat{
  display:flex;flex-direction:column;gap:2px;padding:12px 20px;border-radius:16px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);min-width:120px;
  transition:transform .2s var(--ease);
}
.hstat:hover{transform:translateY(-3px)}
.hstat b{font-size:26px;line-height:1.2;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.hstat span{font-size:13px;color:rgba(255,255,255,.66)}

/* ---------- Layout ---------- */
main{display:block}
.section{padding:64px 0}
@media (min-width:768px){.section{padding:80px 0}}
@media (min-width:1024px){.section{padding:96px 0}}
.sec-head{max-width:760px;margin-bottom:34px}
.sec-kicker{
  display:inline-block;font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;
  color:var(--brand);margin-bottom:10px;
}
.sec-title{font-size:clamp(22px,2.6vw,34px);line-height:1.3;font-weight:700;letter-spacing:-.01em;color:var(--text)}
.sec-sub{margin-top:12px;font-size:15.5px;line-height:1.8;color:var(--muted)}

.layout{display:grid;grid-template-columns:262px minmax(0,1fr);gap:40px;align-items:start}
@media (max-width:1023px){.layout{grid-template-columns:1fr;gap:28px}}

.sidebar{position:sticky;top:88px;display:flex;flex-direction:column;gap:18px}
.side-card{
  background:var(--card);border:1px solid var(--line);border-radius:20px;padding:22px;
  box-shadow:var(--shadow-sm);
}
.side-card h3{font-size:14px;font-weight:700;color:var(--text);letter-spacing:.02em;margin-bottom:14px;display:flex;align-items:center;gap:8px}
.side-card h3::before{content:"";width:4px;height:14px;border-radius:2px;background:var(--grad);display:block}
.cat-nav{display:flex;flex-direction:column;gap:2px}
.cat-nav a{
  display:block;padding:9px 12px;border-radius:12px;font-size:14.5px;color:var(--muted);
  transition:background .18s var(--ease),color .18s var(--ease),transform .18s var(--ease);
}
.cat-nav a:hover{background:#F3F0FA;color:var(--brand);transform:translateX(3px)}
.cat-nav a.active{background:rgba(255,46,136,.1);color:var(--brand);font-weight:600}
.rel-list{display:flex;flex-direction:column;gap:10px}
.rel-list a{
  display:flex;align-items:center;justify-content:space-between;gap:10px;
  padding:11px 13px;border-radius:14px;border:1px solid var(--line);
  font-size:14px;color:var(--text);background:#FBFAFE;
  transition:border-color .18s var(--ease),transform .18s var(--ease),box-shadow .18s var(--ease);
}
.rel-list a:hover{border-color:rgba(255,46,136,.4);transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.rel-list a span.arrow{color:var(--brand);font-size:13px}
.badge-card{
  background:linear-gradient(150deg,#1E1733,#14101F);color:#fff;border:1px solid rgba(255,255,255,.08);
}
.badge-card h3{color:#fff}
.badge-card h3::before{background:var(--grad)}
.badge-num{font-size:36px;font-weight:800;line-height:1.1;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums}
.badge-card p{margin-top:8px;font-size:13.5px;line-height:1.7;color:rgba(255,255,255,.66)}

.cards-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px}
@media (max-width:640px){.cards-grid{grid-template-columns:1fr;gap:18px}}
.g-card{
  display:flex;flex-direction:column;background:var(--card);border:1px solid var(--line);
  border-radius:22px;overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.g-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:rgba(255,46,136,.28)}
.g-cover{position:relative;aspect-ratio:16/9;overflow:hidden;background:var(--grad)}
.g-cover img{width:100%;height:100%;object-fit:cover;transition:transform .4s var(--ease)}
.g-card:hover .g-cover img{transform:scale(1.03)}
.chip{
  position:absolute;left:14px;top:14px;padding:5px 12px;border-radius:999px;font-size:12px;
  color:#fff;background:rgba(20,16,31,.68);border:1px solid rgba(255,255,255,.2);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.g-body{padding:22px 22px 20px;display:flex;flex-direction:column;flex:1}
.g-body h3{font-size:18px;font-weight:600;line-height:1.5;color:var(--text)}
.g-body p{margin-top:10px;font-size:15px;line-height:1.72;color:var(--muted)}
.g-meta{
  margin-top:auto;padding-top:16px;display:flex;align-items:center;justify-content:space-between;
  gap:12px;font-size:13px;color:var(--muted);border-top:1px solid var(--line);
}
.g-meta .go{color:var(--brand);font-weight:600;display:inline-flex;align-items:center;gap:5px}
.g-card:hover .g-meta .go{text-decoration:underline;text-underline-offset:3px}

/* ---------- Flow / steps ---------- */
.steps{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
@media (max-width:900px){.steps{grid-template-columns:1fr}}
.step{
  position:relative;padding:28px 24px;border-radius:22px;background:#fff;border:1px solid var(--line);
  box-shadow:var(--shadow-sm);transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.step .idx{
  font-size:34px;font-weight:800;line-height:1;background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;font-variant-numeric:tabular-nums;
}
.step h3{margin-top:14px;font-size:17px;font-weight:600;color:var(--text)}
.step p{margin-top:10px;font-size:14.5px;line-height:1.78;color:var(--muted)}
.step::after{
  content:"";position:absolute;left:24px;right:24px;bottom:0;height:3px;border-radius:3px 3px 0 0;
  background:var(--grad);opacity:0;transition:opacity .22s var(--ease);
}
.step:hover::after{opacity:1}

/* ---------- Split feature ---------- */
.split{display:grid;grid-template-columns:1.05fr 1fr;gap:44px;align-items:center}
@media (max-width:900px){.split{grid-template-columns:1fr;gap:26px}}
.split-media{border-radius:24px;overflow:hidden;background:var(--grad);box-shadow:var(--shadow-sm)}
.split-media img{width:100%;aspect-ratio:16/10;object-fit:cover}
.point-list{margin-top:22px;display:flex;flex-direction:column;gap:14px}
.point-list li{display:flex;gap:12px;align-items:flex-start;font-size:15.5px;line-height:1.75;color:var(--muted)}
.point-list li i{
  flex:0 0 auto;width:9px;height:9px;border-radius:3px;margin-top:9px;
  background:var(--grad);display:block;
}
.point-list li b{color:var(--text);font-weight:600}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.faq-item:hover{border-color:rgba(255,46,136,.3)}
.faq-item[open]{box-shadow:var(--shadow-sm);border-color:rgba(255,46,136,.3)}
.faq-item summary{
  list-style:none;cursor:pointer;padding:18px 22px;display:flex;align-items:center;justify-content:space-between;
  gap:16px;font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{
  content:"+";flex:0 0 auto;width:26px;height:26px;border-radius:9px;display:grid;place-items:center;
  background:rgba(255,46,136,.1);color:var(--brand);font-size:17px;font-weight:700;line-height:1;
  transition:transform .2s var(--ease);
}
.faq-item[open] summary::after{transform:rotate(45deg)}
.faq-item .ans{padding:0 22px 20px;font-size:15px;line-height:1.82;color:var(--muted)}

/* ---------- CTA + form ---------- */
.cta-wrap{
  position:relative;overflow:hidden;border-radius:28px;padding:44px 34px;
  background:linear-gradient(135deg,#1E1733 0%,#14101F 62%);
  border:1px solid rgba(255,255,255,.08);
}
.cta-wrap::before{
  content:"";position:absolute;inset:0;opacity:.22;
  background:url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
}
.cta-wrap::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(120deg,rgba(20,16,31,.94) 0%,rgba(30,23,51,.6) 100%);
}
.cta-inner{position:relative;z-index:2;display:grid;grid-template-columns:1fr 1.05fr;gap:40px;align-items:start}
@media (max-width:900px){.cta-inner{grid-template-columns:1fr;gap:26px}}
.cta-inner h2{color:#fff;font-size:clamp(22px,2.4vw,30px);font-weight:700;line-height:1.32}
.cta-inner p{margin-top:14px;font-size:15.5px;line-height:1.82;color:rgba(255,255,255,.72)}
.cta-mini{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.cta-mini span{
  padding:6px 14px;border-radius:999px;font-size:13px;color:#fff;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.16);
}
.form-card{
  background:rgba(255,255,255,.96);border-radius:22px;padding:26px;
  box-shadow:0 24px 60px -24px rgba(0,0,0,.6);
}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:640px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:7px}
.field.full{grid-column:1/-1}
.field label{font-size:13.5px;font-weight:600;color:var(--text)}
.field input,.field select,.field textarea{
  height:48px;border-radius:14px;border:1px solid rgba(20,16,31,.1);
  background:#F7F6FB;padding:0 14px;font-size:15px;color:var(--text);outline:none;
  transition:border-color .18s var(--ease),background .18s var(--ease),box-shadow .18s var(--ease);
}
.field textarea{height:110px;padding:12px 14px;resize:vertical;line-height:1.7}
.field input:focus,.field select:focus,.field textarea:focus{
  background:#fff;border-color:rgba(255,46,136,.55);box-shadow:0 0 0 3px rgba(255,46,136,.16);
}
.form-tip{margin-top:14px;font-size:13px;color:var(--muted);min-height:20px}
.form-tip.ok{color:#0E9F6E}
.form-tip.err{color:#E5484D}

/* ---------- Footer ---------- */
.site-footer{position:relative;background:var(--ink);color:rgba(255,255,255,.7);padding-top:72px}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px}
@media (max-width:1023px){.foot-grid{grid-template-columns:1fr 1fr;gap:32px}}
@media (max-width:640px){.foot-grid{grid-template-columns:1fr}}
.foot-brand{display:flex;align-items:center;gap:11px;color:#fff;margin-bottom:16px}
.foot-brand .logo-mark{width:34px;height:34px}
.foot-brand strong{font-size:17px;font-weight:800;letter-spacing:-.01em}
.site-footer p{font-size:14px;line-height:1.85;color:rgba(255,255,255,.6)}
.site-footer h4{font-size:14px;font-weight:700;color:#fff;margin:0 0 16px;letter-spacing:.02em}
.foot-links{display:flex;flex-direction:column;gap:11px}
.foot-links a{
  font-size:14px;color:rgba(255,255,255,.66);width:fit-content;
  transition:color .18s var(--ease),transform .18s var(--ease);
}
.foot-links a:hover{color:var(--brand);transform:translateX(3px);text-decoration:underline;text-underline-offset:4px;text-decoration-thickness:2px}
.foot-editor{
  display:flex;align-items:center;gap:10px;margin-top:20px;padding:11px 14px;border-radius:14px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.09);width:fit-content;
}
.foot-editor .avatar{
  width:34px;height:34px;border-radius:50%;display:grid;place-items:center;
  background:var(--grad);color:#fff;font-weight:700;font-size:15px;
}
.foot-editor b{display:block;font-size:13.5px;color:#fff;font-weight:600}
.foot-editor em{display:block;font-style:normal;font-size:12.5px;color:rgba(255,255,255,.55)}
.foot-bottom{
  margin-top:56px;border-top:1px solid rgba(255,255,255,.1);padding:20px 0;
  display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:13px;
  color:rgba(255,255,255,.5);
}
.foot-bottom a{color:rgba(255,255,255,.66)}
.foot-bottom a:hover{color:var(--brand)}

/* ---------- Sticky CTA & Back to top ---------- */
.sticky-cta{
  position:fixed;left:0;right:0;bottom:0;z-index:75;height:64px;
  background:rgba(20,16,31,.96);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  display:flex;align-items:center;
  padding-bottom:env(safe-area-inset-bottom);
  box-shadow:0 -14px 40px -24px rgba(0,0,0,.8);
}
.sticky-cta::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad)}
.sticky-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;width:100%}
.sticky-inner .txt{display:flex;align-items:center;gap:10px;color:#fff;font-size:14.5px;font-weight:600}
.sticky-inner .txt i{width:8px;height:8px;border-radius:50%;background:var(--accent);display:block;box-shadow:0 0 0 4px rgba(34,211,238,.16)}
@media (max-width:640px){
  .sticky-cta{height:60px}
  .sticky-inner .txt{font-size:13.5px}
  .sticky-inner .btn{height:40px;padding:0 18px;font-size:13.5px}
}
.to-top{
  position:fixed;right:20px;bottom:86px;z-index:76;width:44px;height:44px;border-radius:50%;
  display:grid;place-items:center;cursor:pointer;color:#fff;
  background:rgba(20,16,31,.72);border:1px solid rgba(255,255,255,.18);
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  opacity:0;pointer-events:none;transform:translateY(8px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),background .2s var(--ease);
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}
.to-top:hover{background:var(--brand)}

/* ---------- Reveal ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .5s var(--ease),transform .5s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){
  *{animation:none!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
}

/* ---------- Responsive nav ---------- */
@media (max-width:1023px){
  .nav-links{display:none}
  .menu-btn{display:grid}
  .nav-actions .btn-primary{display:none}
}
@media (max-width:640px){
  .site-header{height:58px}
  .site-header.solid{height:56px}
  .logo-text{font-size:15.5px}
  .logo-text small{font-size:10px}
  .cat-hero{padding:118px 0 56px}
  .hero-lead{font-size:15.5px}
  .hstat{min-width:104px;padding:10px 16px}
  .hstat b{font-size:22px}
}
@media (max-width:1023px){
  .cat-nav{flex-direction:row;overflow-x:auto;gap:10px;padding-bottom:4px;-ms-overflow-style:none;scrollbar-width:none}
  .cat-nav::-webkit-scrollbar{display:none}
  .cat-nav a{white-space:nowrap;background:#F7F6FB;border:1px solid var(--line);border-radius:999px;padding:8px 16px}
  .cat-nav a:hover{transform:none}
}

/* roulang page: category2 */
:root{
  --ink:#14101F;
  --ink-2:#1E1733;
  --brand:#FF2E88;
  --brand-2:#8B5CF6;
  --accent:#22D3EE;
  --warm:#FFB020;
  --bg:#F7F6FB;
  --card:#FFFFFF;
  --line:rgba(20,16,31,.08);
  --text:#1B1730;
  --muted:#5B5470;
  --grad:linear-gradient(120deg,#FF2E88 0%,#8B5CF6 52%,#22D3EE 100%);
  --shadow-sm:0 10px 30px -12px rgba(20,16,31,.18);
  --shadow-lg:0 24px 60px -20px rgba(255,46,136,.28);
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --ease:cubic-bezier(.2,.7,.3,1);
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  padding-bottom:calc(64px + env(safe-area-inset-bottom));
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block;border-radius:var(--r-lg)}
a{color:inherit;text-decoration:none;transition:color .22s var(--ease)}
button{font-family:inherit;cursor:pointer}
input,textarea,select{font-family:inherit}
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}
.num{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}
.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px}
@media(min-width:1024px){.container{padding:0 32px}}
::selection{background:rgba(255,46,136,.22)}

/* 滚动条 */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-track{background:#EFECF6}
::-webkit-scrollbar-thumb{background:linear-gradient(160deg,#FF2E88,#8B5CF6);border-radius:999px;border:2px solid #EFECF6}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;
  top:0;left:0;right:0;
  z-index:80;
  background:rgba(20,16,31,.32);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  box-shadow:0 12px 34px -22px rgba(0,0,0,.6);
  transition:background .24s var(--ease),height .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-solid{
  background:rgba(20,16,31,.92);
  box-shadow:0 18px 44px -26px rgba(0,0,0,.85);
}
.nav-inner{
  display:flex;
  align-items:center;
  gap:24px;
  height:68px;
}
.site-header.is-solid .nav-inner{height:60px}
.logo{display:flex;align-items:center;gap:12px;flex:0 0 auto}
.logo-mark{
  width:32px;height:32px;border-radius:10px;
  background:var(--grad);
  display:inline-flex;align-items:center;justify-content:center;
  gap:3px;
  box-shadow:0 8px 20px -10px rgba(255,46,136,.85);
}
.logo-mark span{width:4px;height:4px;border-radius:50%;background:#fff;opacity:.92}
.logo-mark span:nth-child(2){height:10px;border-radius:999px}
.logo-mark span:nth-child(3){height:6px;border-radius:999px;opacity:.7}
.logo-text{
  display:flex;flex-direction:column;gap:1px;
  color:#fff;font-size:17px;font-weight:800;letter-spacing:-.01em;line-height:1.15;
}
.logo-text small{font-size:11px;font-weight:400;color:rgba(255,255,255,.6);letter-spacing:.02em}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto}
.nav-links a{
  position:relative;
  padding:9px 14px;
  border-radius:999px;
  font-size:14.5px;
  color:rgba(255,255,255,.78);
  white-space:nowrap;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08)}
.nav-links a.active{color:#fff;background:rgba(255,255,255,.12)}
.nav-links a.active::after{
  content:"";position:absolute;left:50%;bottom:2px;transform:translateX(-50%);
  width:22px;height:2px;border-radius:2px;background:var(--grad);
}
.nav-actions{display:flex;align-items:center;gap:10px;flex:0 0 auto}
.icon-btn{
  width:40px;height:40px;border-radius:999px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
  color:#fff;
  transition:transform .2s var(--ease),background .2s var(--ease);
}
.icon-btn:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  min-height:48px;padding:0 26px;border-radius:999px;
  font-size:15px;font-weight:600;border:1px solid transparent;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .24s var(--ease),border-color .24s var(--ease);
}
.btn-sm{min-height:42px;padding:0 20px;font-size:14px}
.btn-primary{
  background:var(--grad);
  background-size:180% 180%;
  color:#fff;
  box-shadow:0 14px 34px -16px rgba(255,46,136,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg);background-position:100% 50%}
.btn-primary:active{transform:translateY(0) scale(.98)}
.btn-ghost{
  background:rgba(255,255,255,.08);
  border-color:rgba(255,255,255,.26);
  color:#fff;
}
.btn-ghost:hover{background:rgba(255,255,255,.16);transform:translateY(-2px)}
.btn-outline{
  background:#fff;
  border-color:rgba(255,46,136,.4);
  color:var(--brand);
}
.btn-outline:hover{transform:translateY(-2px);box-shadow:var(--shadow-sm)}
.btn:focus-visible,.icon-btn:focus-visible,a:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
.menu-btn{
  display:none;
  width:42px;height:42px;border-radius:12px;
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
  position:relative;
}
.menu-btn span,.menu-btn span::before,.menu-btn span::after{
  position:absolute;left:50%;width:18px;height:2px;border-radius:2px;background:#fff;
  transform:translateX(-50%);transition:transform .24s var(--ease),opacity .2s var(--ease);
}
.menu-btn span{top:50%;margin-top:-1px}
.menu-btn span::before{content:"";top:-6px}
.menu-btn span::after{content:"";top:6px}
.menu-btn[aria-expanded="true"] span{background:transparent}
.menu-btn[aria-expanded="true"] span::before{transform:translateX(-50%) rotate(45deg);top:0}
.menu-btn[aria-expanded="true"] span::after{transform:translateX(-50%) rotate(-45deg);top:0}

/* 移动抽屉 */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.6);
  opacity:0;visibility:hidden;transition:opacity .24s var(--ease),visibility .24s var(--ease);
  z-index:90;backdrop-filter:blur(2px);
}
.drawer-mask.open{opacity:1;visibility:visible}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;
  background:linear-gradient(180deg,#1E1733,#14101F 70%);
  z-index:95;transform:translateX(100%);
  transition:transform .28s var(--ease);
  padding:26px 22px calc(26px + env(safe-area-inset-bottom));
  display:flex;flex-direction:column;gap:6px;
  border-left:1px solid rgba(255,255,255,.1);
}
.drawer.open{transform:translateX(0)}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}
.drawer-head b{color:#fff;font-size:16px}
.drawer-close{
  width:38px;height:38px;border-radius:12px;border:1px solid rgba(255,255,255,.18);
  background:rgba(255,255,255,.06);color:#fff;font-size:18px;line-height:1;
}
.drawer a.drawer-link{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:14px;
  color:rgba(255,255,255,.82);font-size:15px;
}
.drawer a.drawer-link:hover,.drawer a.drawer-link.active{background:rgba(255,255,255,.1);color:#fff}
.drawer .btn{margin-top:auto;width:100%}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.7)}
.crumb a{color:rgba(255,255,255,.7)}
.crumb a:hover{color:var(--accent)}
.crumb .sep{color:rgba(255,255,255,.34)}
.crumb .current{color:#fff;font-weight:600}

/* ---------- 内页 Hero 窄带 ---------- */
.page-hero{
  position:relative;
  padding:132px 0 60px;
  min-height:300px;
  display:flex;align-items:flex-end;
  background:linear-gradient(155deg,#14101F 0%,#1E1733 58%,#2B1B45 100%);
  overflow:hidden;
  color:#fff;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background:url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
  opacity:.24;
}
.page-hero::after{
  content:"";position:absolute;inset:0;
  background:
    radial-gradient(760px 320px at 86% 6%, rgba(255,46,136,.34), transparent 62%),
    radial-gradient(560px 300px at 4% 100%, rgba(34,211,238,.22), transparent 66%);
}
.page-hero .hero-inner{position:relative;z-index:2;width:100%}
.page-hero h1{
  margin-top:18px;
  font-size:clamp(26px,4.2vw,44px);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.14;
  max-width:880px;
}
.page-hero h1 .hl{
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.page-hero .lead{
  margin-top:16px;max-width:680px;
  font-size:16px;line-height:1.8;color:rgba(255,255,255,.78);
}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px}
.hero-tags span{
  display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:999px;
  font-size:13px;color:rgba(255,255,255,.86);
  background:rgba(255,255,255,.08);
  border:1px solid rgba(255,255,255,.18);
}

/* ---------- 板块通用 ---------- */
.section{padding:56px 0}
@media(min-width:768px){.section{padding:80px 0}}
@media(min-width:1024px){.section{padding:96px 0}}
.sec-head{max-width:720px;margin-bottom:36px}
.sec-head .eyebrow{
  display:inline-flex;align-items:center;gap:8px;
  font-size:13px;font-weight:600;color:var(--brand);
  letter-spacing:.04em;margin-bottom:12px;
}
.sec-head .eyebrow::before{content:"";width:22px;height:2px;border-radius:2px;background:var(--grad)}
.sec-head h2{
  font-size:clamp(22px,2.6vw,34px);
  font-weight:700;
}
.sec-head p{margin-top:14px;color:var(--muted);font-size:15.5px;line-height:1.8}

/* ---------- 编号列表 ---------- */
.timeline-wrap{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
  padding:8px 26px;
}
@media(min-width:1024px){.timeline-wrap{padding:8px 40px}}
.rule-list{counter-reset:rule}
.rule-row{
  display:grid;
  grid-template-columns:64px 1fr auto;
  gap:22px;
  align-items:start;
  padding:26px 0;
  border-bottom:1px solid var(--line);
  transition:background .22s var(--ease);
}
.rule-row:last-child{border-bottom:0}
.rule-row:hover{background:linear-gradient(90deg,rgba(255,46,136,.05),transparent 70%)}
.rule-no{
  font-size:clamp(26px,2.8vw,38px);
  font-weight:800;
  line-height:1;
  font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  padding-top:4px;
}
.rule-body h3{font-size:18px;font-weight:600}
.rule-body h3 .chip{
  display:inline-block;margin-left:10px;vertical-align:2px;
  font-size:12px;font-weight:500;color:var(--brand-2);
  background:rgba(139,92,246,.1);
  border-radius:999px;padding:2px 10px;
}
.rule-body p{margin-top:8px;font-size:15px;line-height:1.75;color:var(--muted);max-width:760px}
.rule-link{
  align-self:center;
  display:inline-flex;align-items:center;gap:6px;
  font-size:14px;font-weight:600;color:var(--brand);
  white-space:nowrap;
  padding:8px 4px;
  border-bottom:2px solid transparent;
  transition:border-color .22s var(--ease),gap .22s var(--ease);
}
.rule-link:hover{border-bottom-color:var(--brand);gap:10px}
.rule-link svg{transition:transform .22s var(--ease)}
.rule-link:hover svg{transform:translateX(3px)}

/* 横通栏配图 */
.wide-figure{margin:44px 0}
.wide-figure img{
  width:100%;height:clamp(180px,30vw,340px);object-fit:cover;
  border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
}
.wide-figure figcaption{
  margin-top:12px;font-size:13px;color:var(--muted);text-align:center;
}

/* ---------- 数据条 ---------- */
.stat-band{
  background:linear-gradient(120deg,#14101F 0%,#1E1733 62%,#2A1B44 100%);
  border-radius:var(--r-lg);
  padding:34px 26px;
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:24px;
  position:relative;
  overflow:hidden;
}
.stat-band::after{
  content:"";position:absolute;right:-80px;top:-60px;width:280px;height:280px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,136,.35),transparent 66%);
}
@media(min-width:768px){.stat-band{grid-template-columns:repeat(4,minmax(0,1fr));padding:40px 40px;}}
.stat-item{position:relative;z-index:2}
.stat-item b{
  display:block;
  font-size:clamp(26px,3vw,36px);
  font-weight:800;
  font-variant-numeric:tabular-nums;
  background:var(--grad);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  line-height:1.1;
}
.stat-item span{display:block;margin-top:8px;font-size:13px;color:rgba(255,255,255,.68);line-height:1.6}

/* ---------- 双栏图文 ---------- */
.split{display:grid;gap:32px;align-items:center}
@media(min-width:1024px){.split{grid-template-columns:1.05fr 1fr;gap:56px}}
.split-media{position:relative}
.split-media img{
  width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:var(--r-lg);
  box-shadow:var(--shadow-sm);
}
.split-media .float-card{
  position:absolute;left:18px;bottom:-22px;
  background:#fff;border-radius:var(--r-md);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  padding:14px 18px;display:flex;align-items:center;gap:12px;
  max-width:88%;
}
.split-media .float-card b{
  font-size:22px;font-weight:800;font-variant-numeric:tabular-nums;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.split-media .float-card em{font-style:normal;font-size:13px;color:var(--muted);line-height:1.5}
.point-list{margin-top:24px;display:grid;gap:14px}
.point-list li{display:grid;grid-template-columns:20px 1fr;gap:12px;align-items:start}
.point-list .sq{
  width:14px;height:14px;border-radius:4px;margin-top:7px;
  background:var(--grad);
  box-shadow:0 4px 12px -4px rgba(255,46,136,.7);
}
.point-list b{display:block;font-size:15.5px;font-weight:600}
.point-list p{font-size:14.5px;color:var(--muted);line-height:1.75;margin-top:2px}

/* ---------- CTA ---------- */
.cta-band{
  position:relative;overflow:hidden;
  border-radius:var(--r-lg);
  background:linear-gradient(120deg,rgba(255,46,136,.12),rgba(139,92,246,.12) 55%,rgba(34,211,238,.12));
  border:1px solid rgba(255,46,136,.22);
  padding:36px 26px;
  display:grid;gap:22px;
  align-items:center;
}
@media(min-width:900px){.cta-band{grid-template-columns:1fr auto;padding:44px 46px;gap:32px}}
.cta-band h2{font-size:clamp(20px,2.2vw,28px);font-weight:700}
.cta-band p{margin-top:10px;color:var(--muted);font-size:15px;max-width:640px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}

/* ---------- FAQ ---------- */
.faq-list{display:grid;gap:12px}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  box-shadow:0 6px 18px -14px rgba(20,16,31,.35);
  overflow:hidden;
  transition:box-shadow .24s var(--ease),border-color .24s var(--ease);
}
.faq-item[open]{border-color:rgba(255,46,136,.32);box-shadow:var(--shadow-sm)}
.faq-item summary{
  list-style:none;cursor:pointer;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;
  font-size:17px;font-weight:600;color:var(--text);
}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary .plus{
  flex:0 0 auto;width:26px;height:26px;border-radius:8px;
  display:inline-flex;align-items:center;justify-content:center;
  background:rgba(139,92,246,.1);color:var(--brand-2);
  font-weight:700;transition:transform .2s var(--ease),background .2s var(--ease);
}
.faq-item[open] summary .plus{transform:rotate(45deg);background:rgba(255,46,136,.12);color:var(--brand)}
.faq-item p{
  padding:0 22px 20px 22px;
  font-size:15px;line-height:1.85;color:var(--muted);max-width:900px;
}

/* ---------- 底部固定转化条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;
  height:calc(64px + env(safe-area-inset-bottom));
  padding-bottom:env(safe-area-inset-bottom);
  background:rgba(20,16,31,.94);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  display:flex;align-items:center;
  box-shadow:0 -14px 40px -22px rgba(0,0,0,.9);
}
.bottom-bar::before{
  content:"";position:absolute;left:0;right:0;top:0;height:1px;background:var(--grad);
}
.bottom-bar .inner{
  width:100%;max-width:1240px;margin:0 auto;padding:0 20px;
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
@media(min-width:1024px){.bottom-bar .inner{padding:0 32px}}
.bottom-bar .txt{color:rgba(255,255,255,.86);font-size:14px;font-weight:600;letter-spacing:.01em}
@media(max-width:640px){
  .bottom-bar{height:calc(60px + env(safe-area-inset-bottom))}
  .bottom-bar .txt{font-size:12.5px}
  .bottom-bar .btn{min-height:40px;padding:0 18px;font-size:13.5px}
}

/* 回到顶部 */
.to-top{
  position:fixed;right:18px;bottom:calc(84px + env(safe-area-inset-bottom));z-index:75;
  width:44px;height:44px;border-radius:50%;
  background:rgba(255,255,255,.9);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
  color:var(--ink);
  display:inline-flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{background:#fff;box-shadow:var(--shadow-lg)}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:56px;
  background:linear-gradient(180deg,#1E1733,#14101F 62%);
  color:rgba(255,255,255,.72);
  padding:56px 0 0;
}
.site-footer::before{content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad)}
.footer-grid{display:grid;gap:32px}
@media(min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(min-width:1024px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px}}
.footer-brand .logo-text{font-size:16.5px}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.85;color:rgba(255,255,255,.6);max-width:320px}
.footer-col h4{font-size:14px;font-weight:700;color:#fff;letter-spacing:.04em;margin-bottom:16px}
.footer-col a{
  display:block;font-size:14px;color:rgba(255,255,255,.66);
  padding:6px 0;position:relative;
  transition:color .2s var(--ease),padding-left .2s var(--ease);
}
.footer-col a::after{
  content:"";position:absolute;left:0;bottom:2px;width:0;height:2px;background:var(--brand);
  transition:width .22s var(--ease);
}
.footer-col a:hover{color:var(--brand);padding-left:2px}
.footer-col a:hover::after{width:18px}
.footer-col .contact-line{font-size:14px;color:rgba(255,255,255,.66);padding:6px 0;display:flex;gap:8px}
.footer-col .contact-line b{color:rgba(255,255,255,.9);font-weight:600}
.footer-bottom{
  margin-top:44px;border-top:1px solid rgba(255,255,255,.1);
  padding:18px 0 22px;
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom .links{display:flex;flex-wrap:wrap;gap:16px}
.footer-bottom .links a:hover{color:var(--brand)}

/* 动效降级 */
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* 响应式：编号列表 */
@media(max-width:900px){
  .rule-row{grid-template-columns:52px 1fr;gap:16px}
  .rule-link{grid-column:2;justify-self:start;align-self:start}
}
@media(max-width:640px){
  .nav-links{display:none}
  .menu-btn{display:inline-flex}
  .logo-text small{display:none}
  .logo-text{font-size:15.5px}
  .timeline-wrap{padding:4px 18px}
  .rule-row{padding:22px 0;grid-template-columns:44px 1fr}
  .rule-no{font-size:26px}
  .rule-body h3{font-size:16.5px}
  .page-hero{padding:104px 0 44px;min-height:0}
  .btn{min-height:46px}
}

/* roulang page: category3 */
:root{
  --ink:#14101F;
  --ink-2:#1E1733;
  --brand:#FF2E88;
  --brand-2:#8B5CF6;
  --accent:#22D3EE;
  --warm:#FFB020;
  --bg:#F7F6FB;
  --card:#FFFFFF;
  --line:rgba(20,16,31,.08);
  --line-soft:rgba(20,16,31,.06);
  --text:#1B1730;
  --muted:#5B5470;
  --grad:linear-gradient(120deg,#FF2E88 0%,#8B5CF6 52%,#22D3EE 100%);
  --grad-soft:linear-gradient(120deg,rgba(255,46,136,.14),rgba(139,92,246,.14),rgba(34,211,238,.14));
  --r-lg:24px;
  --r-md:18px;
  --r-sm:14px;
  --shadow:0 10px 30px -12px rgba(20,16,31,.18);
  --shadow-hover:0 24px 60px -20px rgba(255,46,136,.28);
  --ease:cubic-bezier(.2,.7,.3,1);
  --font-cn:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.85;
  color:var(--text);
  background:var(--bg);
  padding-bottom:calc(72px + env(safe-area-inset-bottom));
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img{max-width:100%;display:block;border-radius:var(--r-md);}
a{color:inherit;text-decoration:none;}
button,input,select,textarea{font-family:inherit;font-size:inherit;color:inherit;}
button{cursor:pointer;border:none;background:none;}
h1,h2,h3,h4{margin:0;font-weight:700;line-height:1.25;letter-spacing:-.01em;}
p{margin:0 0 16px;}
p:last-child{margin-bottom:0;}
ul{margin:0;padding:0;list-style:none;}
::selection{background:rgba(255,46,136,.22);}
*:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px;}

.container{width:100%;max-width:1240px;margin:0 auto;padding:0 20px;}
@media (min-width:1024px){.container{padding:0 32px;}}

.num{font-family:Inter,system-ui,sans-serif;font-variant-numeric:tabular-nums;font-feature-settings:"tnum";}

/* ---------- 导航 ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:60;
  background:rgba(20,16,31,.36);
  -webkit-backdrop-filter:blur(16px) saturate(140%);
  backdrop-filter:blur(16px) saturate(140%);
  border-bottom:1px solid rgba(255,255,255,.14);
  box-shadow:0 12px 30px -22px rgba(0,0,0,.75);
  transition:background .24s var(--ease),height .24s var(--ease),box-shadow .24s var(--ease);
}
.site-header.is-scrolled{
  background:rgba(20,16,31,.94);
  box-shadow:0 18px 40px -22px rgba(0,0,0,.85);
}
.nav-inner{
  display:flex;align-items:center;gap:20px;
  height:68px;
  transition:height .24s var(--ease);
}
.site-header.is-scrolled .nav-inner{height:60px;}
.logo{display:flex;align-items:center;gap:12px;flex-shrink:0;}
.logo-mark{
  width:32px;height:32px;border-radius:10px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;gap:3px;
  box-shadow:0 8px 20px -10px rgba(255,46,136,.85);
  flex-shrink:0;
}
.logo-mark span{display:block;width:3px;border-radius:2px;background:rgba(255,255,255,.92);height:10px;}
.logo-mark span:nth-child(2){height:16px;}
.logo-mark span:nth-child(3){height:7px;}
.logo-text{
  display:flex;flex-direction:column;color:#fff;font-weight:800;font-size:16px;line-height:1.2;letter-spacing:.01em;
}
.logo-text small{
  font-size:11px;font-weight:500;color:rgba(255,255,255,.62);letter-spacing:.08em;margin-top:2px;
}
.nav-links{display:flex;align-items:center;gap:4px;margin-left:auto;}
.nav-links a{
  position:relative;display:inline-block;padding:9px 14px;border-radius:999px;
  font-size:14.5px;color:rgba(255,255,255,.76);font-weight:500;
  transition:color .2s var(--ease),background .2s var(--ease);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:5px;height:2px;border-radius:2px;
  background:var(--grad);transform:scaleX(0);transform-origin:left;transition:transform .24s var(--ease);
}
.nav-links a:hover{color:#fff;background:rgba(255,255,255,.08);}
.nav-links a:hover::after{transform:scaleX(1);}
.nav-links a.active{color:#fff;background:rgba(255,255,255,.12);}
.nav-links a.active::after{transform:scaleX(1);}
.nav-actions{display:flex;align-items:center;gap:10px;flex-shrink:0;}
.icon-btn{
  width:40px;height:40px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  color:rgba(255,255,255,.82);border:1px solid rgba(255,255,255,.18);
  transition:all .2s var(--ease);
}
.icon-btn:hover{color:#fff;background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.32);}
.menu-btn{
  display:none;width:42px;height:42px;border-radius:12px;border:1px solid rgba(255,255,255,.2);
  align-items:center;justify-content:center;
}
.menu-btn span{display:block;width:17px;height:2px;background:#fff;border-radius:2px;position:relative;transition:all .22s var(--ease);}
.menu-btn span::before,.menu-btn span::after{
  content:"";position:absolute;left:0;width:17px;height:2px;background:#fff;border-radius:2px;transition:all .22s var(--ease);
}
.menu-btn span::before{top:-6px;}
.menu-btn span::after{top:6px;}
.menu-btn[aria-expanded="true"] span{background:transparent;}
.menu-btn[aria-expanded="true"] span::before{top:0;transform:rotate(45deg);}
.menu-btn[aria-expanded="true"] span::after{top:0;transform:rotate(-45deg);}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  height:48px;padding:0 26px;border-radius:999px;font-size:15px;font-weight:600;
  transition:transform .2s var(--ease),box-shadow .24s var(--ease),background .24s var(--ease),color .2s var(--ease);
  white-space:nowrap;
}
.btn-primary{
  background:var(--grad);background-size:180% 100%;color:#fff;
  box-shadow:0 14px 34px -16px rgba(255,46,136,.75);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);background-position:60% 0;}
.btn-primary:active{transform:translateY(0) scale(.98);}
.btn-outline{
  background:rgba(255,255,255,.08);color:#fff;border:1px solid rgba(255,255,255,.32);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);
}
.btn-outline:hover{transform:translateY(-2px);background:rgba(255,255,255,.16);}
.btn-soft{
  background:#fff;color:var(--brand);border:1px solid rgba(255,46,136,.35);
}
.btn-soft:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);}
.btn-sm{height:42px;padding:0 20px;font-size:14px;}

/* ---------- 抽屉 ---------- */
.drawer-mask{
  position:fixed;inset:0;background:rgba(20,16,31,.6);opacity:0;visibility:hidden;
  transition:opacity .26s var(--ease),visibility .26s var(--ease);z-index:70;
  -webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);
}
.drawer-mask.open{opacity:1;visibility:visible;}
.drawer{
  position:fixed;top:0;right:0;bottom:0;width:84vw;max-width:360px;background:var(--ink);z-index:80;
  transform:translateX(100%);transition:transform .3s var(--ease);
  display:flex;flex-direction:column;padding:26px 22px calc(28px + env(safe-area-inset-bottom));
  overflow-y:auto;
}
.drawer.open{transform:translateX(0);}
.drawer-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px;}
.drawer-title{color:#fff;font-weight:800;font-size:16px;}
.drawer-close{color:rgba(255,255,255,.7);font-size:22px;line-height:1;width:36px;height:36px;border-radius:10px;border:1px solid rgba(255,255,255,.16);}
.drawer nav a{
  display:flex;align-items:center;height:48px;padding:0 14px;border-radius:12px;
  color:rgba(255,255,255,.82);font-size:15px;border-bottom:1px solid rgba(255,255,255,.07);
}
.drawer nav a.active{color:#fff;background:rgba(255,255,255,.1);}
.drawer nav a:hover{background:rgba(255,255,255,.09);color:#fff;}
.drawer-foot{margin-top:auto;padding-top:22px;}

/* ---------- 面包屑 ---------- */
.crumb{display:flex;align-items:center;gap:8px;font-size:13.5px;color:rgba(255,255,255,.62);flex-wrap:wrap;}
.crumb a{color:rgba(255,255,255,.78);transition:color .2s var(--ease);}
.crumb a:hover{color:#fff;}
.crumb .sep{opacity:.45;}
.crumb .current{color:rgba(255,255,255,.95);font-weight:600;}

/* ---------- Hero ---------- */
.page-hero{
  position:relative;overflow:hidden;background:var(--ink);
  padding:118px 0 66px;
  min-height:300px;
  display:flex;align-items:center;
}
.page-hero::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(100deg,rgba(20,16,31,.94) 0%,rgba(20,16,31,.76) 48%,rgba(30,23,51,.6) 100%),url("/assets/images/backpic/back-2.webp");
  background-size:cover;background-position:center;
  opacity:.92;
}
.page-hero::after{
  content:"";position:absolute;width:560px;height:560px;right:-160px;top:-220px;border-radius:50%;
  background:radial-gradient(circle,rgba(255,46,136,.34),rgba(139,92,246,.18) 45%,transparent 72%);
  filter:blur(10px);pointer-events:none;
}
.page-hero .container{position:relative;z-index:2;}
.hero-center{text-align:center;max-width:820px;margin:0 auto;}
.page-hero .crumb{justify-content:center;margin-bottom:20px;}
.hero-tag{
  display:inline-flex;align-items:center;gap:8px;height:32px;padding:0 16px;border-radius:999px;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.2);
  color:rgba(255,255,255,.86);font-size:13px;letter-spacing:.04em;margin-bottom:18px;
}
.hero-tag i{width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 4px rgba(34,211,238,.22);display:block;}
.page-hero h1{
  font-size:clamp(28px,4.6vw,46px);font-weight:800;letter-spacing:-.02em;line-height:1.14;color:#fff;
}
.page-hero h1 em{
  font-style:normal;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-lead{
  margin:16px auto 0;max-width:620px;color:rgba(255,255,255,.72);font-size:16px;line-height:1.8;
}
.hero-stats{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:28px;}
.hero-stat{
  min-width:136px;padding:14px 20px;border-radius:16px;
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);text-align:center;
}
.hero-stat b{
  display:block;font-size:26px;font-weight:800;line-height:1.2;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-stat span{font-size:12.5px;color:rgba(255,255,255,.66);letter-spacing:.04em;}

/* ---------- 通用区块 ---------- */
.section{padding:56px 0;}
@media (min-width:768px){.section{padding:76px 0;}}
@media (min-width:1024px){.section{padding:92px 0;}}
.section-head{max-width:760px;margin:0 auto 40px;text-align:center;}
.section-head .kicker{
  display:inline-block;font-size:13px;letter-spacing:.14em;font-weight:600;
  color:var(--brand);text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{font-size:clamp(22px,2.6vw,32px);margin-bottom:12px;}
.section-head p{color:var(--muted);font-size:15.5px;}
.section-head.left{text-align:left;margin-left:0;}

/* ---------- 错位大卡 ---------- */
.stagger-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:28px;}
.stagger-col{display:flex;flex-direction:column;gap:28px;}
.stagger-col:nth-child(2){margin-top:32px;}
.big-card{
  background:var(--card);border-radius:var(--r-lg);border:1px solid var(--line);
  box-shadow:var(--shadow);overflow:hidden;
  transition:transform .26s var(--ease),box-shadow .26s var(--ease);
}
.big-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-hover);}
.big-card .thumb{position:relative;overflow:hidden;border-radius:0;}
.big-card .thumb img{width:100%;aspect-ratio:16/9;object-fit:cover;border-radius:0;transition:transform .5s var(--ease);background:var(--grad-soft);}
.big-card:hover .thumb img{transform:scale(1.04);}
.big-card .thumb .chip{
  position:absolute;left:16px;top:16px;height:28px;padding:0 12px;border-radius:999px;
  background:rgba(20,16,31,.62);color:#fff;font-size:12.5px;display:inline-flex;align-items:center;
  -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);border:1px solid rgba(255,255,255,.18);
}
.big-card .body{padding:24px 26px 28px;}
.big-card h3{font-size:19px;margin-bottom:10px;}
.big-card p{font-size:15px;line-height:1.75;color:var(--muted);}
.card-index{
  font-family:Inter,system-ui,sans-serif;font-size:13px;font-weight:700;letter-spacing:.1em;
  background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;
  display:inline-block;margin-bottom:10px;
}
.card-link{
  display:inline-flex;align-items:center;gap:6px;margin-top:18px;font-size:14px;font-weight:600;color:var(--brand);
  transition:gap .2s var(--ease),color .2s var(--ease);
}
.card-link:hover{gap:11px;color:var(--brand-2);}

/* ---------- 双栏图文 ---------- */
.split{
  display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
}
.split .split-text h2{font-size:clamp(22px,2.4vw,30px);margin-bottom:14px;}
.split .split-text .lead{color:var(--muted);font-size:15.5px;margin-bottom:26px;}
.point-list{display:flex;flex-direction:column;gap:18px;}
.point{
  display:flex;gap:16px;align-items:flex-start;padding:18px 20px;border-radius:var(--r-md);
  background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px -18px rgba(20,16,31,.4);
  transition:transform .22s var(--ease),box-shadow .22s var(--ease);
}
.point:hover{transform:translateY(-3px);box-shadow:var(--shadow);}
.point .mark{
  flex-shrink:0;width:30px;height:30px;border-radius:9px;background:var(--grad);
  display:flex;align-items:center;justify-content:center;color:#fff;font-size:13px;font-weight:700;
  font-family:Inter,system-ui,sans-serif;
}
.point h4{font-size:16px;margin-bottom:4px;font-weight:600;}
.point p{font-size:14.5px;color:var(--muted);line-height:1.7;}
.split-media{position:relative;border-radius:var(--r-lg);overflow:hidden;box-shadow:var(--shadow);}
.split-media img{width:100%;aspect-ratio:16/11;object-fit:cover;border-radius:0;transition:transform .55s var(--ease);}
.split-media:hover img{transform:scale(1.035);}
.split-media::after{
  content:"";position:absolute;inset:0;border-radius:var(--r-lg);
  border:1px solid rgba(255,255,255,.4);pointer-events:none;
}

/* ---------- CTA 条 ---------- */
.cta-band{
  position:relative;overflow:hidden;border-radius:var(--r-lg);
  background:var(--ink-2);padding:38px 36px;
  display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap;
  box-shadow:0 26px 60px -30px rgba(20,16,31,.7);
}
.cta-band::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(600px 200px at 8% 110%,rgba(255,46,136,.32),transparent 70%),
             radial-gradient(500px 200px at 92% -20%,rgba(34,211,238,.22),transparent 70%);
  pointer-events:none;
}
.cta-band > *{position:relative;z-index:2;}
.cta-band h2{color:#fff;font-size:clamp(20px,2.2vw,26px);margin-bottom:8px;}
.cta-band p{color:rgba(255,255,255,.68);font-size:14.5px;max-width:520px;}

/* ---------- 表单 ---------- */
.form-card{
  background:#fff;border-radius:var(--r-lg);border:1px solid var(--line);
  box-shadow:var(--shadow);padding:32px;
}
@media (max-width:640px){.form-card{padding:24px 20px;}}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;}
.field{display:flex;flex-direction:column;gap:8px;}
.field.full{grid-column:1 / -1;}
.field label{font-size:14px;font-weight:600;color:var(--text);}
.field label span{color:var(--brand);}
.field input,.field select,.field textarea{
  width:100%;height:48px;padding:0 16px;border-radius:var(--r-sm);
  background:var(--bg);border:1px solid var(--line);color:var(--text);
  transition:background .2s var(--ease),border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.field textarea{height:130px;padding:14px 16px;resize:vertical;line-height:1.7;}
.field select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,var(--muted) 50%),linear-gradient(135deg,var(--muted) 50%,transparent 50%);background-position:calc(100% - 20px) 21px,calc(100% - 15px) 21px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;background:#fff;border-color:rgba(255,46,136,.55);box-shadow:0 0 0 3px rgba(255,46,136,.14);
}
.field .hint{font-size:12.5px;color:var(--muted);}
.form-actions{grid-column:1 / -1;display:flex;align-items:center;gap:16px;flex-wrap:wrap;margin-top:4px;}
.form-note{font-size:13px;color:var(--muted);}
.form-feedback{
  grid-column:1 / -1;display:none;padding:14px 16px;border-radius:var(--r-sm);
  background:rgba(34,211,238,.1);border:1px solid rgba(34,211,238,.35);color:#0f6f80;font-size:14px;
}
.form-feedback.show{display:block;}

/* ---------- FAQ ---------- */
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;overflow:hidden;
  transition:box-shadow .22s var(--ease),border-color .22s var(--ease);
}
.faq-item[open]{box-shadow:var(--shadow);border-color:rgba(255,46,136,.28);}
.faq-item summary{
  list-style:none;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 22px;font-size:17px;font-weight:600;
}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .plus{
  flex-shrink:0;width:26px;height:26px;border-radius:50%;position:relative;
  background:var(--grad-soft);transition:transform .2s var(--ease);
}
.faq-item summary .plus::before,.faq-item summary .plus::after{
  content:"";position:absolute;left:50%;top:50%;width:12px;height:2px;border-radius:2px;background:var(--brand);
  transform:translate(-50%,-50%);
}
.faq-item summary .plus::after{transform:translate(-50%,-50%) rotate(90deg);transition:transform .2s var(--ease);}
.faq-item[open] summary .plus::after{transform:translate(-50%,-50%) rotate(0);}
.faq-item .answer{padding:0 22px 22px;font-size:15px;color:var(--muted);line-height:1.8;}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;background:var(--ink);color:rgba(255,255,255,.72);margin-top:0;
}
.site-footer::before{
  content:"";display:block;height:1px;width:100%;background:var(--grad);
}
.footer-main{
  display:grid;grid-template-columns:1.5fr 1fr 1fr 1.2fr;gap:40px;
  padding:60px 0 40px;
}
.footer-brand .logo-text{font-size:17px;color:#fff;}
.footer-brand p{margin-top:16px;font-size:14px;line-height:1.8;color:rgba(255,255,255,.6);max-width:300px;}
.footer-col h4{color:#fff;font-size:15px;margin-bottom:16px;letter-spacing:.02em;}
.footer-col ul{display:flex;flex-direction:column;gap:10px;}
.footer-col a{font-size:14px;color:rgba(255,255,255,.66);transition:color .2s var(--ease),padding-left .2s var(--ease);}
.footer-col a:hover{color:var(--brand);padding-left:4px;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:4px;}
.footer-contact li{font-size:14px;color:rgba(255,255,255,.66);display:flex;gap:10px;}
.footer-contact li b{color:rgba(255,255,255,.9);font-weight:600;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding:20px 0 26px;display:flex;align-items:center;justify-content:space-between;gap:18px;flex-wrap:wrap;
  font-size:13px;color:rgba(255,255,255,.5);
}
.footer-bottom a{color:rgba(255,255,255,.6);}
.footer-bottom a:hover{color:var(--brand);}
.to-top{
  position:fixed;right:20px;bottom:calc(84px + env(safe-area-inset-bottom));z-index:55;
  width:44px;height:44px;border-radius:50%;
  background:rgba(20,16,31,.55);border:1px solid rgba(255,255,255,.22);color:#fff;
  -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
  display:flex;align-items:center;justify-content:center;
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .24s var(--ease),transform .24s var(--ease),visibility .24s var(--ease);
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.to-top:hover{background:rgba(255,46,136,.85);}

/* ---------- 底部转化条 ---------- */
.bottom-bar{
  position:fixed;left:0;right:0;bottom:0;z-index:58;height:64px;
  background:rgba(20,16,31,.95);
  -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
  border-top:1px solid rgba(255,255,255,.1);
  padding-bottom:env(safe-area-inset-bottom);
  display:flex;align-items:center;
}
.bottom-bar::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;background:var(--grad);
}
.bottom-bar .container{display:flex;align-items:center;justify-content:space-between;gap:16px;}
.bottom-bar .bar-text{color:rgba(255,255,255,.82);font-size:14px;font-weight:500;letter-spacing:.02em;}
.bottom-bar .bar-text i{
  display:inline-block;width:6px;height:6px;border-radius:50%;background:var(--accent);margin-right:10px;
  box-shadow:0 0 0 4px rgba(34,211,238,.2);vertical-align:middle;
}
@media (max-width:640px){
  .bottom-bar{height:60px;}
  .bottom-bar .bar-text{font-size:13px;}
  .bottom-bar .btn{height:40px;padding:0 18px;font-size:14px;}
}

/* ---------- 响应式 ---------- */
@media (max-width:1023px){
  .nav-links{display:none;}
  .menu-btn{display:flex;}
  .split{grid-template-columns:1fr;gap:32px;}
  .split .split-media{order:-1;}
  .footer-main{grid-template-columns:1fr 1fr;gap:32px;}
}
@media (max-width:767px){
  .stagger-grid{grid-template-columns:1fr;gap:22px;}
  .stagger-col:nth-child(2){margin-top:0;}
  .page-hero{padding:104px 0 52px;min-height:0;}
  .hero-stats{gap:10px;}
  .hero-stat{min-width:0;flex:1 1 44%;padding:12px 14px;}
  .hero-stat b{font-size:22px;}
  .cta-band{padding:28px 22px;flex-direction:column;align-items:flex-start;}
  .form-grid{grid-template-columns:1fr;}
  .faq-item summary{font-size:15.5px;padding:16px 18px;}
  .faq-item .answer{padding:0 18px 18px;}
  .to-top{right:16px;}
}
@media (max-width:640px){
  .footer-main{grid-template-columns:1fr;gap:28px;padding:44px 0 30px;}
  .logo-text small{display:none;}
}

@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition-duration:.01ms !important;}
  html{scroll-behavior:auto;}
}