/* roulang page: index */
:root{
    --brand:#2B5CE6; --brand-deep:#1B3FA8; --brand-soft:#EAF0FE;
    --accent:#FF7A45; --accent-hover:#F2652F; --accent-soft:#FFF1EA;
    --mint:#12B4A0;
    --bg:#F6F8FC; --surface:#FFFFFF; --line:#E4E9F2;
    --ink:#0E1A2B; --ink-2:#55637A; --ink-3:#8A96AB;
    --radius-card:16px; --radius-lg:24px; --radius-pill:999px;
    --shadow-sm:0 1px 2px rgba(16,32,64,.04), 0 6px 16px -8px rgba(16,32,64,.10);
    --shadow-md:0 2px 4px rgba(16,32,64,.05), 0 16px 32px -14px rgba(16,32,64,.16);
    --ease:cubic-bezier(.2,.7,.3,1); --dur:220ms;
  }
  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;background:var(--bg);color:var(--ink);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    font-size:16px;line-height:1.8;-webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;height:auto;}
  a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease);}
  a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px;}
  button{font-family:inherit;font-size:inherit;line-height:inherit;}
  input{font-family:inherit;font-size:inherit;}
  h1,h2,h3,h4{margin:0;line-height:1.35;}
  p{margin:0;}
  ul{margin:0;padding:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1280px){.container{padding:0 32px;}}

  /* ---------- 悬浮胶囊导航 ---------- */
  .site-header{position:sticky;top:0;z-index:60;padding:16px 0 8px;}
  .nav-shell{
    width:min(1180px,calc(100% - 32px));margin:0 auto;
    display:flex;align-items:center;gap:18px;padding:10px 12px 10px 18px;
    background:rgba(255,255,255,.88);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
    border:1px solid var(--line);border-radius:var(--radius-pill);
    box-shadow:var(--shadow-sm);
    transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .site-header.is-scrolled .nav-shell{box-shadow:var(--shadow-md);background:rgba(255,255,255,.96);}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;}
  .brand:hover{text-decoration:none;}
  .brand-mark{
    width:32px;height:32px;border-radius:10px;flex:0 0 auto;
    background:linear-gradient(135deg,var(--brand),var(--mint));
    display:grid;place-items:center;box-shadow:0 6px 14px -8px rgba(43,92,230,.9);
  }
  .brand-mark svg{width:18px;height:18px;display:block;}
  .brand-text{display:flex;flex-direction:column;line-height:1.2;}
  .brand-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
  .brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.02em;}
  .nav-links{display:none;align-items:center;gap:4px;margin-left:auto;}
  @media (min-width:900px){.nav-links{display:flex;}}
  .nav-link{padding:8px 14px;border-radius:var(--radius-pill);font-size:14.5px;font-weight:500;color:var(--ink-2);white-space:nowrap;}
  .nav-link:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
  .nav-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
  .nav-actions{display:flex;align-items:center;gap:10px;margin-left:auto;}
  @media (min-width:900px){.nav-actions{margin-left:0;}}
  .nav-toggle{
    display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
    border:1px solid var(--line);background:#fff;color:var(--ink);cursor:pointer;
    transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .nav-toggle:hover{border-color:var(--brand);color:var(--brand);}
  @media (min-width:900px){.nav-toggle{display:none;}}
  .nav-mobile{
    display:none;width:min(1180px,calc(100% - 32px));margin:10px auto 0;padding:12px;
    background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-md);
  }
  .nav-mobile.is-open{display:block;}
  @media (min-width:900px){.nav-mobile{display:none!important;}}
  .nav-mobile a{display:block;padding:12px 14px;border-radius:12px;color:var(--ink);font-weight:500;}
  .nav-mobile a:hover,.nav-mobile a.is-active{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
  .nav-mobile .btn{margin-top:10px;width:100%;}

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius-pill);
    font-weight:600;font-size:15px;border:1.5px solid transparent;cursor:pointer;
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),
               background var(--dur) var(--ease),color var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .btn:hover{text-decoration:none;}
  .btn:active{transform:translateY(1px) scale(.99);}
  .btn-sm{height:40px;padding:0 18px;font-size:14px;}
  .btn-lg{height:52px;padding:0 28px;font-size:16px;}
  .btn-xl{height:56px;padding:0 34px;font-size:17px;}
  .btn-brand{background:var(--brand);color:#fff;box-shadow:0 10px 22px -12px rgba(43,92,230,.9);}
  .btn-brand:hover{background:var(--brand-deep);color:#fff;box-shadow:0 14px 28px -12px rgba(43,92,230,.85);}
  .btn-accent{background:var(--accent);color:#fff;box-shadow:0 10px 22px -12px rgba(255,122,69,.95);}
  .btn-accent:hover{background:var(--accent-hover);color:#fff;box-shadow:0 14px 28px -12px rgba(255,122,69,.9);}
  .btn-outline{background:transparent;border-color:var(--brand);color:var(--brand);}
  .btn-outline:hover{background:var(--brand-soft);border-color:var(--brand-deep);color:var(--brand-deep);}
  .btn-light{background:#fff;border-color:var(--line);color:var(--ink);}
  .btn-light:hover{border-color:var(--brand);color:var(--brand);background:#fff;}

  /* ---------- 板块 ---------- */
  .section{padding:52px 0;}
  @media (min-width:768px){.section{padding:80px 0;}}
  @media (min-width:1024px){.section{padding:92px 0;}}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;margin-bottom:30px;}
  .section-title{font-size:23px;font-weight:700;letter-spacing:-.01em;}
  @media (min-width:768px){.section-title{font-size:31px;}}
  .section-desc{margin-top:10px;color:var(--ink-2);font-size:15px;max-width:680px;}
  .eyebrow{font-size:13px;font-weight:600;color:var(--brand);letter-spacing:.04em;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    padding:36px 0 52px;
    background-image:linear-gradient(180deg,rgba(246,248,252,.6),rgba(246,248,252,.97)),
                     url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
  }
  .hero-grid{display:grid;gap:36px;align-items:center;}
  @media (min-width:1024px){.hero-grid{grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:56px;}}
  .hero-copy{min-width:0;}
  .pill-tag{
    display:inline-flex;align-items:center;gap:8px;padding:6px 14px;border-radius:var(--radius-pill);
    background:var(--brand-soft);color:var(--brand-deep);font-size:13px;font-weight:600;
  }
  .pill-tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--mint);}
  .hero h1{font-size:28px;font-weight:700;letter-spacing:-.01em;margin-top:18px;}
  @media (min-width:768px){.hero h1{font-size:38px;}}
  @media (min-width:1280px){.hero h1{font-size:47px;line-height:1.24;}}
  .hero-sub{margin-top:16px;font-size:16px;color:var(--ink-2);max-width:560px;line-height:1.85;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px;}
  .trust-row{list-style:none;display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;}
  .trust-row li{display:flex;align-items:center;gap:8px;font-size:13.5px;color:var(--ink-2);}
  .trust-row li::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--mint);flex:0 0 auto;}
  .hero-visual{position:relative;min-width:0;}
  .hero-shot{
    border-radius:var(--radius-lg);overflow:hidden;background:#fff;
    border:1px solid var(--line);box-shadow:var(--shadow-md);aspect-ratio:16/11;
  }
  .hero-shot img{width:100%;height:100%;object-fit:cover;}
  .float-card{
    position:absolute;background:#fff;border:1px solid var(--line);
    border-radius:14px;box-shadow:var(--shadow-md);padding:10px 14px;
  }
  .float-card .fc-label{font-size:12px;color:var(--ink-3);}
  .float-card .fc-value{font-size:15px;font-weight:700;color:var(--ink);}
  .float-rating{left:-10px;bottom:24px;}
  .float-update{right:-8px;top:20px;}
  @media (max-width:520px){.float-card{display:none;}}
  .status-bar{
    margin-top:26px;display:flex;flex-wrap:wrap;align-items:center;gap:10px 16px;
    padding:12px 18px;border-radius:14px;background:#fff;border:1px solid var(--line);
    box-shadow:var(--shadow-sm);font-size:13.5px;color:var(--ink-2);max-width:640px;
  }
  .dot-live{width:8px;height:8px;border-radius:50%;background:var(--mint);box-shadow:0 0 0 4px rgba(18,180,160,.16);}

  /* ---------- 价值说明带 ---------- */
  .value-strip{display:grid;gap:16px;grid-template-columns:repeat(2,minmax(0,1fr));}
  @media (min-width:1024px){.value-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;}}
  .value-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 20px;box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .value-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft);}
  .value-icon{
    width:40px;height:40px;border-radius:12px;background:var(--brand-soft);color:var(--brand);
    display:grid;place-items:center;margin-bottom:14px;
  }
  .value-icon svg{width:20px;height:20px;}
  .value-item h3{font-size:16.5px;font-weight:600;margin-bottom:6px;}
  .value-item p{font-size:14px;color:var(--ink-2);line-height:1.75;}

  /* ---------- 截图轮播 ---------- */
  .shot-rail{
    display:flex;gap:16px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:6px 20px 22px;margin:0 -20px;scrollbar-width:none;
  }
  .shot-rail::-webkit-scrollbar{display:none;}
  .shot-card{
    flex:0 0 auto;width:236px;scroll-snap-align:start;background:#fff;
    border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
    box-shadow:var(--shadow-sm);margin:0;
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  }
  @media (min-width:768px){.shot-card{width:272px;}}
  .shot-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);}
  .shot-card img{width:100%;aspect-ratio:9/16;object-fit:cover;background:var(--brand-soft);}
  .shot-card figcaption{padding:14px 16px 18px;}
  .shot-card figcaption strong{display:block;font-size:15px;font-weight:600;}
  .shot-card figcaption span{display:block;font-size:13px;color:var(--ink-3);margin-top:4px;}
  .rail-controls{display:flex;align-items:center;justify-content:center;gap:18px;margin-top:4px;}
  .rail-arrow{
    width:40px;height:40px;border-radius:50%;border:1px solid var(--line);background:#fff;
    color:var(--ink-2);display:grid;place-items:center;cursor:pointer;
    transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  }
  .rail-arrow:hover{border-color:var(--brand);color:var(--brand);box-shadow:var(--shadow-sm);}
  @media (max-width:767px){.rail-arrow{display:none;}}
  .rail-dots{display:flex;gap:8px;align-items:center;}
  .rail-dot{
    width:6px;height:6px;border-radius:var(--radius-pill);background:var(--line);
    border:none;padding:0;cursor:pointer;transition:width var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .rail-dot.is-active{width:18px;background:var(--brand);}

  /* ---------- 系统要求 ---------- */
  .spec-grid{display:grid;gap:20px;}
  @media (min-width:900px){.spec-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  .spec-card{
    display:flex;flex-direction:column;height:100%;background:#fff;
    border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .spec-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft);}
  .spec-head{display:flex;align-items:center;gap:12px;}
  .spec-head .value-icon{margin-bottom:0;}
  .spec-head h3{font-size:18px;font-weight:600;}
  .spec-rows{list-style:none;margin-top:14px;}
  .spec-rows li{display:flex;justify-content:space-between;gap:16px;padding:11px 0;border-bottom:1px dashed var(--line);font-size:14.5px;}
  .spec-rows li:last-child{border-bottom:none;}
  .spec-rows .k{color:var(--ink-2);}
  .spec-rows .v{color:var(--ink);font-weight:600;text-align:right;}
  .spec-note{margin-top:auto;padding-top:16px;font-size:13px;color:var(--ink-3);}

  /* ---------- 最新信息 ---------- */
  .news-grid{display:grid;gap:20px;}
  @media (min-width:640px){.news-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.news-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .news-card{
    display:flex;flex-direction:column;height:100%;background:#fff;overflow:hidden;
    border:1px solid var(--line);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .news-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft);text-decoration:none;}
  .news-thumb{width:100%;aspect-ratio:16/9;object-fit:cover;background:var(--brand-soft);}
  .news-thumb-fallback{
    width:100%;aspect-ratio:16/9;background:linear-gradient(135deg,var(--brand-soft),#fff);
    display:grid;place-items:center;color:var(--brand);
  }
  .news-thumb-fallback svg{width:32px;height:32px;}
  .news-body{display:flex;flex-direction:column;gap:10px;padding:18px 20px 20px;flex:1;}
  .badge{
    display:inline-flex;align-items:center;width:max-content;padding:4px 10px;border-radius:6px;
    background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;
  }
  .news-title{
    font-size:17px;font-weight:600;line-height:1.5;color:var(--ink);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
    transition:color var(--dur) var(--ease);
  }
  .news-card:hover .news-title{color:var(--brand);}
  .news-excerpt{
    font-size:14px;color:var(--ink-2);line-height:1.75;
    display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
  }
  .news-meta{
    margin-top:auto;padding-top:12px;display:flex;align-items:center;justify-content:space-between;
    gap:12px;border-top:1px solid var(--line);font-size:13px;color:var(--ink-3);
  }
  .empty-state{
    grid-column:1/-1;min-height:280px;display:flex;flex-direction:column;align-items:center;justify-content:center;
    gap:14px;text-align:center;padding:40px 20px;background:#fff;
    border:1px dashed var(--line);border-radius:var(--radius-card);
  }
  .empty-state svg{width:38px;height:38px;color:var(--brand);}
  .empty-state p{color:var(--ink-2);font-size:15px;}

  /* ---------- 评价墙 ---------- */
  .review-grid{display:grid;gap:18px;align-items:start;}
  @media (min-width:768px){.review-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.review-grid{grid-template-columns:repeat(3,minmax(0,1fr));}}
  .review-card{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);padding:20px;
    box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .review-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft);}
  .review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
  .avatar{
    width:40px;height:40px;border-radius:50%;flex:0 0 auto;display:grid;place-items:center;
    background:var(--brand-soft);color:var(--brand);font-weight:700;font-size:15px;
  }
  .review-name{font-size:15px;font-weight:600;}
  .review-date{font-size:13px;color:var(--ink-3);}
  .stars{display:flex;gap:3px;color:var(--accent);margin-bottom:10px;}
  .stars svg{width:14px;height:14px;}
  .review-text{font-size:14.5px;color:var(--ink-2);line-height:1.8;}

  /* ---------- 下载区 ---------- */
  .download-band{
    position:relative;overflow:hidden;text-align:center;padding:40px 24px 44px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    box-shadow:var(--shadow-md);
  }
  @media (min-width:768px){.download-band{padding:56px 40px 60px;}}
  .download-band::before{
    content:"";position:absolute;left:50%;top:-150px;width:460px;height:340px;transform:translateX(-50%);
    background:radial-gradient(circle,rgba(43,92,230,.16),transparent 70%);pointer-events:none;
  }
  .dl-inner{position:relative;max-width:720px;margin:0 auto;}
  .dl-title{font-size:23px;font-weight:700;letter-spacing:-.01em;}
  @media (min-width:768px){.dl-title{font-size:30px;}}
  .dl-sub{margin-top:12px;color:var(--ink-2);font-size:15px;}
  .dl-actions{display:flex;flex-direction:column;gap:12px;margin-top:28px;}
  @media (min-width:640px){.dl-actions{flex-direction:row;justify-content:center;}}
  @media (max-width:639px){.dl-actions .btn{width:100%;}}
  .platform-row{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:22px;}
  .platform-chip{
    padding:8px 16px;border-radius:var(--radius-pill);border:1px solid var(--line);
    background:#fff;font-size:13.5px;color:var(--ink-2);
    transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .platform-chip:hover{border-color:var(--brand);color:var(--brand);}
  .qr-wrap{margin-top:28px;display:flex;flex-direction:column;align-items:center;gap:10px;}
  .qr-cell{
    width:120px;height:120px;border-radius:14px;border:1px solid var(--line);background:#fff;
    display:grid;place-items:center;box-shadow:var(--shadow-sm);
  }
  .qr-wrap span{font-size:12.5px;color:var(--ink-3);}
  .dl-note{margin-top:24px;font-size:13.5px;color:var(--ink-3);}

  /* ---------- 轻表单 ---------- */
  .subscribe-block{text-align:center;max-width:640px;margin:0 auto;}
  .subscribe{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
  .subscribe input{
    flex:1 1 240px;height:48px;padding:0 16px;border-radius:12px;
    border:1px solid var(--line);background:#fff;color:var(--ink);
    transition:border-color var(--dur) var(--ease),box-shadow var(--dur) var(--ease);
  }
  .subscribe input::placeholder{color:var(--ink-3);}
  .subscribe input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-soft);}
  .subscribe .btn{flex:0 0 auto;}
  @media (max-width:639px){.subscribe .btn{width:100%;}}
  .form-hint{margin-top:12px;font-size:13px;color:var(--ink-3);}

  /* ---------- FAQ ---------- */
  .faq-list{
    display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm);
  }
  .faq-item + .faq-item{border-top:1px solid var(--line);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    min-height:60px;padding:16px 22px;background:transparent;border:none;text-align:left;
    font-size:15.5px;font-weight:600;color:var(--ink);cursor:pointer;
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .faq-q:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .faq-icon{flex:0 0 auto;width:20px;height:20px;color:var(--brand);transition:transform var(--dur) var(--ease);}
  .faq-item.is-open .faq-icon{transform:rotate(180deg);}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .3s var(--ease);}
  .faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.85;}

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0B1B33;color:#C6D2E6;margin-top:60px;padding-top:56px;}
  .footer-grid{display:grid;gap:30px;}
  @media (min-width:640px){.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (min-width:1024px){.footer-grid{grid-template-columns:1.5fr 1fr 1.2fr 1.1fr;gap:40px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px;}
  .footer-brand .brand-name{color:#fff;font-size:15px;}
  .footer-brand .brand-sub{color:#8A96AB;}
  .footer-text{font-size:14px;color:#C6D2E6;line-height:1.85;max-width:330px;}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin-bottom:14px;}
  .footer-links{list-style:none;display:flex;flex-direction:column;gap:10px;}
  .footer-links a{color:#C6D2E6;font-size:14px;transition:color 200ms var(--ease);}
  .footer-links a:hover{color:#fff;text-decoration:none;}
  .footer-bottom{
    margin-top:44px;padding:20px 0 28px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;
    font-size:13px;color:#8A96AB;
  }
  .footer-bottom a{color:#8A96AB;}
  .footer-bottom a:hover{color:#fff;}

  @media (prefers-reduced-motion:reduce){
    html{scroll-behavior:auto;}
    *,*::before,*::after{transition-duration:.001ms!important;animation-duration:.001ms!important;}
  }

/* roulang page: article */
:root{
  --brand:#2B5CE6;
  --brand-deep:#1B3FA8;
  --brand-soft:#EAF0FE;
  --accent:#FF7A45;
  --accent-hover:#F2652F;
  --accent-soft:#FFF1EA;
  --mint:#12B4A0;
  --bg:#F6F8FC;
  --surface:#FFFFFF;
  --line:#E4E9F2;
  --ink:#0E1A2B;
  --ink-2:#55637A;
  --ink-3:#8A96AB;
  --radius-card:16px;
  --radius-lg:24px;
  --radius-pill:999px;
  --shadow-sm:0 1px 2px rgba(16,32,64,.04), 0 6px 16px -8px rgba(16,32,64,.10);
  --shadow-md:0 2px 4px rgba(16,32,64,.05), 0 16px 32px -14px rgba(16,32,64,.16);
  --ease:cubic-bezier(.2,.7,.3,1);
  --dur:220ms;
}

*,*::before,*::after{ box-sizing:border-box; }

.page-body{
  margin:0;
  font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
  font-size:16px;
  line-height:1.8;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

img{ max-width:100%; display:block; }
a{ color:var(--brand); text-decoration:none; }
ul,ol{ margin:0; padding:0; }

:focus-visible{ outline:2px solid var(--brand); outline-offset:2px; border-radius:6px; }

.container{
  width:100%;
  max-width:1200px;
  margin:0 auto;
  padding:0 20px;
}
@media (min-width:768px){ .container{ padding:0 24px; } }
@media (min-width:1280px){ .container{ padding:0 32px; } }

/* ============ 悬浮胶囊导航 ============ */
.site-header{
  position:sticky;
  top:16px;
  z-index:60;
  padding:16px 16px 0;
}
.nav-shell{
  position:relative;
  width:min(1180px,100%);
  margin:0 auto;
  display:flex;
  align-items:center;
  gap:12px;
  padding:10px 14px;
  background:rgba(255,255,255,.88);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border:1px solid var(--line);
  border-radius:var(--radius-pill);
  box-shadow:var(--shadow-sm);
  transition:box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.site-header.is-scrolled .nav-shell{
  background:rgba(255,255,255,.96);
  box-shadow:var(--shadow-md);
}
.brand{
  display:flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  flex:none;
}
.brand-mark{
  width:32px;
  height:32px;
  border-radius:10px;
  background:linear-gradient(135deg,var(--brand),var(--accent));
  display:grid;
  place-items:center;
  flex:none;
}
.brand-mark svg{ width:17px; height:17px; }
.brand-text{ display:flex; flex-direction:column; line-height:1.2; }
.brand-name{
  font-size:15px;
  font-weight:700;
  color:var(--ink);
  letter-spacing:-0.01em;
  white-space:nowrap;
}
.brand-sub{
  font-size:11px;
  color:var(--ink-3);
  white-space:nowrap;
}
.nav-links{
  display:flex;
  align-items:center;
  gap:4px;
  margin-left:auto;
}
.nav-link{
  padding:9px 14px;
  border-radius:var(--radius-pill);
  font-size:14px;
  color:var(--ink-2);
  text-decoration:none;
  white-space:nowrap;
  transition:color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.nav-link:hover{ color:var(--brand); background:var(--brand-soft); }
.nav-link.is-active{ color:var(--brand); background:var(--brand-soft); font-weight:600; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  height:48px;
  padding:0 24px;
  border-radius:var(--radius-pill);
  border:0;
  font-size:15px;
  font-weight:600;
  font-family:inherit;
  cursor:pointer;
  text-decoration:none;
  white-space:nowrap;
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), background-color var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn-primary{
  background:var(--brand);
  color:#fff;
  box-shadow:0 10px 22px -12px rgba(43,92,230,.85);
}
.btn-primary:hover{ background:var(--brand-deep); transform:translateY(-2px); }
.btn-accent{
  background:var(--accent);
  color:#fff;
  box-shadow:0 10px 22px -12px rgba(242,101,47,.85);
}
.btn-accent:hover{ background:var(--accent-hover); transform:translateY(-2px); }
.btn-ghost{
  background:transparent;
  color:var(--brand);
  border:1.5px solid var(--brand);
}
.btn-ghost:hover{ background:var(--brand-soft); }
.btn:active{ transform:translateY(1px) scale(.99); }

.nav-cta{
  height:40px;
  padding:0 18px;
  font-size:14px;
  margin-left:8px;
  flex:none;
}
.nav-toggle{
  display:none;
  width:40px;
  height:40px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  align-items:center;
  justify-content:center;
  cursor:pointer;
  margin-left:auto;
  flex:none;
}
.nav-toggle svg{ width:18px; height:18px; }
.mobile-panel{
  display:none;
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  right:0;
  background:#fff;
  border:1px solid var(--line);
  border-radius:20px;
  box-shadow:var(--shadow-md);
  padding:12px;
}
.mobile-panel.is-open{ display:block; }
.mobile-panel a{
  display:block;
  padding:12px 14px;
  border-radius:12px;
  font-size:15px;
  color:var(--ink-2);
  text-decoration:none;
  transition:background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.mobile-panel a:hover{ background:var(--brand-soft); color:var(--brand); }
.mobile-panel .btn{ width:100%; margin-top:10px; color:#fff; }
.mobile-panel .btn-ghost{ color:var(--brand); }

@media (max-width:767px){
  .nav-links,.nav-cta{ display:none; }
  .nav-toggle{ display:inline-flex; }
  .brand-sub{ display:none; }
}

/* ============ 顶部条带与面包屑 ============ */
.page-strip{
  margin-top:22px;
  padding:16px 0;
  background-color:#EFF3FB;
  background-image:linear-gradient(rgba(246,248,252,.88),rgba(246,248,252,.96)),url('/assets/images/backpic/back-3.webp');
  background-size:cover;
  background-position:center;
  border-bottom:1px solid var(--line);
}
.breadcrumb{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:13px;
  color:var(--ink-3);
  overflow:hidden;
}
.breadcrumb a{ color:var(--ink-2); text-decoration:none; white-space:nowrap; transition:color var(--dur) var(--ease); }
.breadcrumb a:hover{ color:var(--brand); }
.breadcrumb .sep{ color:var(--ink-3); flex:none; }
.breadcrumb .current{
  color:var(--ink);
  font-weight:600;
  overflow:hidden;
  text-overflow:ellipsis;
  white-space:nowrap;
}

/* ============ 文章布局 ============ */
.article-section{ padding:40px 0 8px; }
@media (min-width:1024px){ .article-section{ padding:48px 0 8px; } }

.article-layout{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:28px;
  align-items:start;
}
@media (min-width:1024px){
  .article-layout{ grid-template-columns:minmax(0,1fr) 320px; gap:32px; }
}

.article-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-sm);
  padding:26px 20px;
}
@media (min-width:768px){ .article-card{ padding:40px 44px; } }

.article-head .badge{ margin-bottom:16px; }
.badge{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:6px;
  background:var(--brand-soft);
  color:var(--brand);
  font-size:12px;
  font-weight:600;
  text-decoration:none;
  transition:background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.badge:hover{ background:var(--brand); color:#fff; }

.article-title{
  margin:0 0 16px;
  font-size:clamp(28px,4vw,40px);
  line-height:1.28;
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--ink);
}
.article-meta{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:10px;
  font-size:13.5px;
  color:var(--ink-3);
}
.article-meta .dot{
  width:4px;
  height:4px;
  border-radius:50%;
  background:var(--line);
  flex:none;
}
.article-meta strong{ color:var(--ink-2); font-weight:600; }

.article-divider{
  height:1px;
  background:var(--line);
  margin:24px 0 28px;
}

/* ============ 正文排版 ============ */
.article-body{
  font-size:16.5px;
  line-height:1.9;
  color:var(--ink);
  word-break:break-word;
}
.article-body p{ margin:0 0 1.2em; }
.article-body h2{
  position:relative;
  margin:2em 0 .8em;
  padding-left:14px;
  font-size:26px;
  line-height:1.4;
  font-weight:700;
  letter-spacing:-0.01em;
}
.article-body h2::before{
  content:"";
  position:absolute;
  left:0;
  top:.22em;
  bottom:.22em;
  width:4px;
  border-radius:2px;
  background:var(--brand);
}
.article-body h3{
  margin:1.6em 0 .6em;
  font-size:19px;
  font-weight:600;
  line-height:1.5;
}
.article-body ul{ list-style:none; margin:0 0 1.2em; padding:0; }
.article-body ul li{ position:relative; padding-left:20px; margin:.45em 0; }
.article-body ul li::before{
  content:"";
  position:absolute;
  left:4px;
  top:.78em;
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--brand);
}
.article-body ol{ margin:0 0 1.2em; padding-left:1.3em; }
.article-body ol li{ margin:.45em 0; }
.article-body blockquote{
  margin:1.5em 0;
  padding:16px 20px;
  background:var(--brand-soft);
  border-left:3px solid var(--brand);
  border-radius:0 12px 12px 0;
  color:var(--ink-2);
}
.article-body blockquote p:last-child{ margin-bottom:0; }
.article-body img{
  margin:1.6em auto;
  border-radius:12px;
  box-shadow:var(--shadow-sm);
  height:auto;
}
.article-body a{
  color:var(--brand);
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.article-body a:hover{ border-bottom-color:var(--brand); color:var(--brand-deep); }
.article-body strong{ font-weight:600; }
.article-body hr{ border:0; border-top:1px solid var(--line); margin:2em 0; }
.article-body table{
  width:100%;
  border-collapse:collapse;
  margin:1.5em 0;
  font-size:15px;
}
.article-body th,.article-body td{
  border:1px solid var(--line);
  padding:10px 12px;
  text-align:left;
}
.article-body th{ background:var(--brand-soft); font-weight:600; }
.article-body figure{ margin:1.6em 0; }
.article-body figcaption{ font-size:13px; color:var(--ink-3); text-align:center; margin-top:10px; }

/* 空态 */
.article-empty{
  text-align:center;
  padding:48px 16px;
  border:1px dashed var(--line);
  border-radius:var(--radius-card);
  background:#FBFCFE;
}
.article-empty h2{ font-size:20px; font-weight:700; margin:0 0 10px; padding:0; }
.article-empty h2::before{ display:none; }
.article-empty p{ color:var(--ink-2); margin:0 0 20px; font-size:15px; line-height:1.8; }

/* ============ 标签与互动 ============ */
.article-foot{
  margin-top:36px;
  padding-top:24px;
  border-top:1px solid var(--line);
}
.tag-row{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:20px;
}
.tag{
  display:inline-flex;
  align-items:center;
  padding:7px 14px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  font-size:13px;
  text-decoration:none;
  transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.tag:hover{ border-color:var(--brand); color:var(--brand); background:var(--brand-soft); }

.action-row{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
}
.action-btn{
  display:inline-flex;
  align-items:center;
  gap:8px;
  height:42px;
  padding:0 20px;
  border-radius:var(--radius-pill);
  border:1.5px solid var(--line);
  background:#fff;
  color:var(--ink-2);
  font-size:14px;
  font-weight:600;
  font-family:inherit;
  cursor:pointer;
  transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease), background-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.action-btn:hover{ border-color:var(--brand); color:var(--brand); background:var(--brand-soft); }
.action-btn:active{ transform:translateY(1px); }
.action-btn svg{ width:16px; height:16px; }

/* ============ 返回入口 ============ */
.back-row{
  display:flex;
  justify-content:center;
  margin:36px 0 0;
}

/* ============ 相关推荐 ============ */
.related-section{ padding:56px 0 0; }
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px;
  margin-bottom:22px;
}
.section-title{
  margin:0;
  font-size:clamp(22px,2.6vw,28px);
  font-weight:700;
  letter-spacing:-0.01em;
  color:var(--ink);
}
.section-desc{
  margin:8px 0 0;
  font-size:15px;
  color:var(--ink-2);
}
.text-link{
  color:var(--brand);
  font-size:14px;
  font-weight:600;
  text-decoration:none;
  white-space:nowrap;
  border-bottom:1px solid transparent;
  transition:border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.text-link:hover{ border-bottom-color:var(--brand); color:var(--brand-deep); }

.rel-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}
@media (min-width:640px){ .rel-grid{ grid-template-columns:1fr 1fr; } }
@media (min-width:1024px){ .rel-grid{ grid-template-columns:repeat(4,minmax(0,1fr)); } }

.rel-card{
  display:flex;
  flex-direction:column;
  gap:10px;
  padding:20px;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  text-decoration:none;
  transition:transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.rel-card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
  border-color:var(--brand-soft);
}
.rel-cat{
  font-size:12px;
  font-weight:600;
  color:var(--brand);
  background:var(--brand-soft);
  border-radius:6px;
  padding:4px 10px;
  align-self:flex-start;
}
.rel-card h3{
  margin:0;
  font-size:16px;
  font-weight:600;
  line-height:1.55;
  color:var(--ink);
}
.rel-card p{
  margin:0;
  font-size:13.5px;
  line-height:1.75;
  color:var(--ink-2);
}
.rel-time{
  margin-top:auto;
  font-size:12.5px;
  color:var(--ink-3);
}

/* ============ 侧边栏 ============ */
.article-side{
  display:flex;
  flex-direction:column;
  gap:18px;
}
@media (min-width:1024px){
  .article-side{ position:sticky; top:96px; }
}
.side-card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-sm);
  padding:20px;
}
.side-card h3{
  margin:0 0 14px;
  font-size:16px;
  font-weight:700;
  color:var(--ink);
}
.side-cover{
  position:relative;
  width:100%;
  aspect-ratio:16/10;
  border-radius:12px;
  overflow:hidden;
  border:1px solid var(--line);
  margin-bottom:14px;
  background:var(--brand-soft);
}
.side-cover img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.side-text{
  font-size:13.5px;
  line-height:1.75;
  color:var(--ink-2);
  margin:0 0 16px;
}
.side-card .btn{ width:100%; height:44px; font-size:14px; }
.side-list{ list-style:none; margin:0; padding:0; display:flex; flex-direction:column; }
.side-list li{ border-bottom:1px dashed var(--line); }
.side-list li:last-child{ border-bottom:0; }
.side-list a{
  display:block;
  padding:12px 0;
  font-size:14px;
  color:var(--ink-2);
  text-decoration:none;
  transition:color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.side-list a:hover{ color:var(--brand); padding-left:6px; }
.side-note{
  display:flex;
  gap:10px;
  align-items:flex-start;
  font-size:13.5px;
  line-height:1.75;
  color:var(--ink-2);
}
.side-note .dot-box{
  width:30px;
  height:30px;
  border-radius:9px;
  background:var(--accent-soft);
  color:var(--accent-hover);
  display:grid;
  place-items:center;
  flex:none;
  font-size:13px;
  font-weight:700;
}

/* ============ 底部 CTA ============ */
.cta-band{ padding:64px 0 0; }
.cta-inner{
  position:relative;
  overflow:hidden;
  text-align:center;
  padding:44px 24px;
  border-radius:var(--radius-lg);
  background:linear-gradient(180deg,#F2F6FF 0%,#FFFFFF 100%);
  border:1px solid var(--line);
  box-shadow:var(--shadow-sm);
}
.cta-inner::after{
  content:"";
  position:absolute;
  top:-120px;
  left:50%;
  transform:translateX(-50%);
  width:420px;
  height:260px;
  background:radial-gradient(closest-side,rgba(43,92,230,.16),rgba(43,92,230,0));
  pointer-events:none;
}
.cta-inner h2{
  position:relative;
  margin:0 0 12px;
  font-size:clamp(22px,2.8vw,30px);
  font-weight:700;
  letter-spacing:-0.01em;
}
.cta-inner p{
  position:relative;
  margin:0 auto 24px;
  max-width:620px;
  font-size:15.5px;
  line-height:1.85;
  color:var(--ink-2);
}
.cta-actions{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:center;
}
@media (max-width:639px){
  .cta-actions .btn{ width:100%; }
}

/* ============ 页脚 ============ */
.site-footer{
  margin-top:72px;
  padding:56px 0 24px;
  background:#0B1B33;
  color:#C6D2E6;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1fr;
  gap:32px;
}
@media (max-width:1023px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:639px){ .footer-grid{ grid-template-columns:1fr; gap:28px; } }

.footer-brand{
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.footer-brand .brand-mark{ width:32px; height:32px; }
.footer-brand .brand-name{
  display:block;
  color:#fff;
  font-size:16px;
  font-weight:700;
  white-space:normal;
}
.footer-brand .brand-sub{
  display:block;
  color:#8FA3C4;
  font-size:11px;
}
.footer-text{
  margin:0;
  max-width:360px;
  font-size:14px;
  line-height:1.85;
  color:#A9B8D2;
}
.footer-title{
  margin:0 0 14px;
  font-size:15px;
  font-weight:600;
  color:#fff;
}
.footer-links{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:10px;
}
.footer-links a,
.footer-links span{
  font-size:14px;
  color:#C6D2E6;
  text-decoration:none;
  transition:color 200ms var(--ease);
}
.footer-links a:hover{ color:#fff; }
.footer-bottom{
  margin-top:36px;
  padding-top:20px;
  border-top:1px solid rgba(255,255,255,.08);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:13px;
  color:#8FA3C4;
}

@media (prefers-reduced-motion:reduce){
  *{ transition:none !important; animation:none !important; }
  .rel-card:hover,.btn:hover{ transform:none !important; }
}

/* roulang page: category1 */
:root{
    --brand:#2B5CE6;
    --brand-deep:#1B3FA8;
    --brand-soft:#EAF0FE;
    --accent:#FF7A45;
    --accent-hover:#F2652F;
    --accent-soft:#FFF1EA;
    --mint:#12B4A0;
    --bg:#F6F8FC;
    --surface:#FFFFFF;
    --line:#E4E9F2;
    --ink:#0E1A2B;
    --ink-2:#55637A;
    --ink-3:#8A96AB;
    --radius-card:16px;
    --radius-lg:24px;
    --radius-pill:999px;
    --shadow-sm:0 1px 2px rgba(16,32,64,.04), 0 6px 16px -8px rgba(16,32,64,.10);
    --shadow-md:0 2px 4px rgba(16,32,64,.05), 0 16px 32px -14px rgba(16,32,64,.16);
    --ease:cubic-bezier(.2,.7,.3,1);
    --dur:220ms;
    --container:1200px;
  }

  *,*::before,*::after{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    font-size:15px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  h1,h2,h3,h4{margin:0;color:var(--ink);font-weight:700;line-height:1.3;letter-spacing:-.01em}
  p{margin:0}
  img{max-width:100%;display:block;border:0}
  a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease)}
  a:hover{color:var(--brand-deep)}
  ul,ol{margin:0;padding:0;list-style:none}
  button{font-family:inherit;font-size:inherit;color:inherit;background:none;border:0;cursor:pointer}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}

  .container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
  @media (min-width:768px){ .container{padding:0 24px} }
  @media (min-width:1280px){ .container{padding:0 32px} }

  /* ============ 导航 ============ */
  .site-header{position:sticky;top:16px;z-index:60;padding:0 16px}
  .nav-shell{
    max-width:1180px;margin:0 auto;display:flex;align-items:center;gap:14px;
    padding:9px 14px 9px 16px;border-radius:var(--radius-pill);
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);
    border:1px solid var(--line);box-shadow:var(--shadow-sm);
    transition:box-shadow var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .site-header.is-scrolled .nav-shell{box-shadow:var(--shadow-md);background:rgba(255,255,255,.96)}
  .brand{display:flex;align-items:center;gap:10px;flex:0 0 auto;text-decoration:none}
  .brand:hover{text-decoration:none}
  .brand-mark{
    width:34px;height:34px;flex:0 0 34px;border-radius:11px;display:inline-flex;align-items:center;justify-content:center;
    background:linear-gradient(135deg,#2B5CE6 0%,#6E93F5 62%,#FF7A45 100%);
    box-shadow:0 6px 14px -6px rgba(43,92,230,.6);
  }
  .brand-mark svg{width:18px;height:18px}
  .brand-text{display:flex;flex-direction:column;line-height:1.2}
  .brand-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em}
  .brand-sub{font-size:11px;color:var(--ink-3);letter-spacing:.02em}
  .nav-links{flex:1;display:flex;align-items:center;justify-content:center;gap:4px}
  .nav-link{
    display:inline-flex;align-items:center;padding:8px 14px;border-radius:var(--radius-pill);
    font-size:14px;color:var(--ink-2);white-space:nowrap;
    transition:color var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .nav-link:hover{color:var(--brand);background:var(--brand-soft);text-decoration:none}
  .nav-link.is-active{color:var(--brand);background:var(--brand-soft);font-weight:600}
  .nav-actions{display:flex;align-items:center;gap:8px;flex:0 0 auto}
  .nav-toggle{
    display:none;width:38px;height:38px;border-radius:12px;border:1px solid var(--line);
    background:#fff;align-items:center;justify-content:center;flex-direction:column;gap:4px;
  }
  .nav-toggle span{display:block;width:16px;height:2px;border-radius:2px;background:var(--ink-2);transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
  .site-header.menu-open .nav-toggle span:nth-child(1){transform:translateY(6px) rotate(45deg)}
  .site-header.menu-open .nav-toggle span:nth-child(2){opacity:0}
  .site-header.menu-open .nav-toggle span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
  .mobile-panel{
    display:none;position:absolute;left:16px;right:16px;top:calc(100% + 10px);
    background:#fff;border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow-md);
    padding:14px;
  }
  .site-header.menu-open .mobile-panel{display:block}
  .mobile-panel a{
    display:block;padding:12px 14px;border-radius:12px;color:var(--ink-2);font-size:15px;
  }
  .mobile-panel a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none}
  .mobile-panel a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600}
  .mobile-panel .btn{margin-top:10px;width:100%}

  /* ============ 按钮 ============ */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius-pill);
    font-size:15px;font-weight:600;border:1.5px solid transparent;white-space:nowrap;
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease),box-shadow var(--dur) var(--ease),transform var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .btn:hover{text-decoration:none;transform:translateY(-1px)}
  .btn:active{transform:translateY(1px) scale(.99)}
  .btn-primary{background:var(--brand);color:#fff}
  .btn-primary:hover{background:var(--brand-deep);color:#fff;box-shadow:0 12px 24px -12px rgba(43,92,230,.75)}
  .btn-accent{background:var(--accent);color:#fff}
  .btn-accent:hover{background:var(--accent-hover);color:#fff;box-shadow:0 12px 24px -12px rgba(255,122,69,.8)}
  .btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
  .btn-outline:hover{background:var(--brand-soft);color:var(--brand)}
  .btn-ghost{background:#fff;border-color:var(--line);color:var(--ink-2)}
  .btn-ghost:hover{color:var(--brand);border-color:var(--brand-soft);background:#fff}
  .btn-sm{height:38px;padding:0 18px;font-size:14px}
  .btn-lg{height:56px;padding:0 32px;font-size:17px}

  .text-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--brand)}
  .text-link:hover{color:var(--brand-deep);text-decoration:underline}
  .text-link span{transition:transform var(--dur) var(--ease)}
  .text-link:hover span{transform:translateX(3px)}

  .tag{
    display:inline-flex;align-items:center;padding:5px 11px;border-radius:6px;
    background:var(--brand-soft);color:var(--brand);font-size:12px;font-weight:600;letter-spacing:.02em;
  }
  .tag-mint{background:rgba(18,180,160,.12);color:#0E8C7C}
  .tag-accent{background:var(--accent-soft);color:var(--accent-hover)}

  /* ============ Hero ============ */
  .cat-hero{
    position:relative;margin-top:18px;overflow:hidden;
    border-radius:var(--radius-lg);
    border:1px solid var(--line);
    background-color:#EFF3FB;
    background-image:
      linear-gradient(100deg,rgba(246,248,252,.97) 0%,rgba(246,248,252,.9) 46%,rgba(246,248,252,.62) 100%),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center right;
  }
  .cat-hero-inner{
    position:relative;z-index:2;
    padding:52px 20px 56px;min-height:280px;display:flex;flex-direction:column;justify-content:center;
  }
  .cat-hero h1{
    font-size:clamp(27px,4.4vw,44px);line-height:1.24;letter-spacing:-.02em;
    max-width:760px;margin:16px 0 14px;
  }
  .cat-hero-lead{font-size:16px;color:var(--ink-2);line-height:1.9;max-width:620px}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px}
  .hero-facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px}
  .hero-facts li{
    display:inline-flex;align-items:center;gap:7px;
    background:rgba(255,255,255,.9);border:1px solid var(--line);border-radius:var(--radius-pill);
    padding:6px 14px;font-size:13px;color:var(--ink-2);box-shadow:var(--shadow-sm);
  }
  .dot-mint{width:7px;height:7px;border-radius:50%;background:var(--mint);flex:0 0 7px}

  /* ============ 板块通用 ============ */
  .section{padding:56px 0}
  @media (min-width:1024px){ .section{padding:88px 0} }
  .section-head{max-width:720px;margin-bottom:34px}
  .section-head h2{font-size:clamp(22px,3vw,32px);font-weight:700;letter-spacing:-.015em;margin-bottom:12px}
  .section-lead{font-size:15px;color:var(--ink-2);line-height:1.9}

  /* ============ 要点条 ============ */
  .feature-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
  .feature-item{
    background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-card);
    padding:22px 20px;box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .feature-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft)}
  .feature-icon{
    width:44px;height:44px;border-radius:13px;background:var(--brand-soft);color:var(--brand);
    display:flex;align-items:center;justify-content:center;margin-bottom:14px;
  }
  .feature-icon svg{width:22px;height:22px}
  .feature-item h3{font-size:16px;font-weight:600;margin-bottom:6px}
  .feature-item p{font-size:13.5px;color:var(--ink-2);line-height:1.8}

  /* ============ 图文交替 ============ */
  .alt-row{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
  .alt-row + .alt-row{margin-top:64px}
  .alt-row.reverse .alt-media{order:2}
  .alt-media{
    border-radius:var(--radius-lg);overflow:hidden;border:1px solid var(--line);
    box-shadow:var(--shadow-md);aspect-ratio:16/10;background:#E9EFFA;
  }
  .alt-media img{width:100%;height:100%;object-fit:cover}
  .alt-body h2{font-size:clamp(20px,2.2vw,26px);font-weight:700;margin:14px 0 12px;letter-spacing:-.015em}
  .alt-text{font-size:15px;color:var(--ink-2);line-height:1.9;margin-bottom:16px}
  .check-list{display:flex;flex-direction:column;gap:9px;margin-bottom:18px}
  .check-list li{position:relative;padding-left:20px;font-size:14px;color:var(--ink-2)}
  .check-list li::before{
    content:"";position:absolute;left:2px;top:11px;width:7px;height:7px;border-radius:50%;
    background:var(--brand);opacity:.85;
  }

  /* ============ 指标条 ============ */
  .metric-bar{
    display:grid;grid-template-columns:repeat(3,1fr);gap:1px;
    background:var(--line);border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;
    box-shadow:var(--shadow-sm);
  }
  .metric{background:#fff;padding:28px 22px;text-align:center}
  .metric-num{display:block;font-size:clamp(22px,3vw,30px);font-weight:700;color:var(--brand);letter-spacing:-.02em;line-height:1.2}
  .metric-label{display:block;margin-top:8px;font-size:13.5px;color:var(--ink-3)}

  /* ============ 渠道列表 ============ */
  .channel-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm)}
  .channel-row{
    display:flex;align-items:center;gap:18px;padding:22px 24px;
    border-bottom:1px dashed var(--line);
    transition:background var(--dur) var(--ease);
  }
  .channel-row:last-child{border-bottom:0}
  .channel-row:hover{background:#FBFCFE}
  .channel-icon{
    width:42px;height:42px;flex:0 0 42px;border-radius:13px;background:var(--brand-soft);color:var(--brand);
    display:flex;align-items:center;justify-content:center;
  }
  .channel-icon svg{width:20px;height:20px}
  .channel-body{flex:1;min-width:0}
  .channel-body h3{font-size:16px;font-weight:600;margin-bottom:4px}
  .channel-body p{font-size:13.5px;color:var(--ink-2);line-height:1.75}

  /* ============ 步骤时间线 ============ */
  .step-list{position:relative;display:flex;flex-direction:column;gap:18px;padding-left:6px}
  .step{
    position:relative;display:flex;gap:18px;background:#fff;border:1px solid var(--line);
    border-radius:var(--radius-card);padding:20px 22px;box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .step:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft)}
  .step-index{
    flex:0 0 46px;height:46px;border-radius:14px;
    background:linear-gradient(135deg,#2B5CE6,#6E93F5);color:#fff;
    display:flex;align-items:center;justify-content:center;
    font-size:16px;font-weight:700;letter-spacing:.02em;
  }
  .step-body h3{font-size:16.5px;font-weight:600;margin-bottom:6px}
  .step-body p{font-size:14px;color:var(--ink-2);line-height:1.85}

  /* ============ FAQ ============ */
  .faq-list{background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);overflow:hidden;box-shadow:var(--shadow-sm)}
  .faq-item + .faq-item{border-top:1px solid var(--line)}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:18px 22px;min-height:60px;text-align:left;font-size:15.5px;font-weight:600;color:var(--ink);
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .faq-q:hover{background:#FBFCFE;color:var(--brand)}
  .faq-icon{
    flex:0 0 26px;height:26px;border-radius:50%;background:var(--brand-soft);color:var(--brand);
    display:flex;align-items:center;justify-content:center;font-size:16px;font-weight:600;line-height:1;
    transition:transform var(--dur) var(--ease),background var(--dur) var(--ease);
  }
  .faq-item.open .faq-q{color:var(--brand)}
  .faq-item.open .faq-icon{transform:rotate(180deg);background:var(--brand);color:#fff}
  .faq-a{max-height:0;overflow:hidden;transition:max-height var(--dur) var(--ease)}
  .faq-a p{padding:0 22px 20px;font-size:14.5px;color:var(--ink-2);line-height:1.9}
  .faq-item.open .faq-a{max-height:340px}

  /* ============ CTA ============ */
  .cta-band{
    border-radius:var(--radius-lg);border:1px solid var(--line);
    background:
      radial-gradient(circle at 18% 20%,rgba(43,92,230,.12),rgba(43,92,230,0) 55%),
      radial-gradient(circle at 88% 80%,rgba(255,122,69,.14),rgba(255,122,69,0) 55%),
      #F2F6FE;
    padding:44px 32px;
  }
  .cta-inner{display:flex;align-items:center;justify-content:space-between;gap:28px;flex-wrap:wrap}
  .cta-inner h2{font-size:clamp(21px,2.6vw,28px);margin-bottom:10px}
  .cta-inner p{font-size:15px;color:var(--ink-2);max-width:520px;line-height:1.9}
  .cta-actions{display:flex;gap:12px;flex-wrap:wrap}

  /* ============ 页脚 ============ */
  .site-footer{background:#0B1B33;color:#C6D2E6;margin-top:72px;padding:56px 0 26px}
  .footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
  .footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:16px}
  .site-footer .brand-name{color:#fff}
  .site-footer .brand-sub{color:#8FA0BC}
  .footer-text{font-size:14px;line-height:1.9;color:#A9B8D0;max-width:360px}
  .footer-title{font-size:14px;font-weight:600;color:#fff;margin:0 0 14px;letter-spacing:.02em}
  .footer-links{display:flex;flex-direction:column;gap:10px}
  .footer-links a{color:#C6D2E6;font-size:14px;transition:color 200ms var(--ease)}
  .footer-links a:hover{color:#fff;text-decoration:none}
  .footer-links span{font-size:14px;color:#8FA0BC}
  .footer-bottom{
    margin-top:34px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);
    display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap;
    font-size:13px;color:#8FA0BC;
  }

  /* ============ 响应式 ============ */
  @media (max-width:1023px){
    .feature-strip{grid-template-columns:repeat(2,1fr)}
    .alt-row{grid-template-columns:1fr;gap:24px}
    .alt-row.reverse .alt-media{order:0}
    .alt-row + .alt-row{margin-top:48px}
    .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  }
  @media (max-width:767px){
    .nav-links{display:none}
    .nav-toggle{display:flex}
    .nav-actions .btn{display:none}
    .nav-shell{justify-content:space-between}
    .cat-hero-inner{padding:40px 20px 44px;min-height:260px}
    .hero-actions .btn{flex:1 1 auto}
    .section{padding:48px 0}
    .metric-bar{grid-template-columns:1fr;gap:1px}
    .channel-row{flex-wrap:wrap;gap:14px;padding:20px}
    .cta-band{padding:32px 20px}
    .cta-actions{width:100%}
    .cta-actions .btn{flex:1 1 auto}
    .site-footer{margin-top:56px;padding:44px 0 24px}
  }
  @media (max-width:560px){
    .feature-strip{grid-template-columns:1fr}
    .footer-grid{grid-template-columns:1fr}
    .step{flex-direction:column;gap:12px}
    .alt-row{gap:18px}
  }
  @media (prefers-reduced-motion:reduce){
    *{transition:none !important;animation:none !important;scroll-behavior:auto !important}
    .btn:hover,.feature-item:hover,.step:hover{transform:none}
  }

/* roulang page: category2 */
:root{
    --brand:#2B5CE6; --brand-deep:#1B3FA8; --brand-soft:#EAF0FE;
    --accent:#FF7A45; --accent-hover:#F2652F; --accent-soft:#FFF1EA;
    --mint:#12B4A0;
    --bg:#F6F8FC; --surface:#FFFFFF; --line:#E4E9F2;
    --ink:#0E1A2B; --ink-2:#55637A; --ink-3:#8A96AB;
    --radius-card:16px; --radius-lg:24px; --radius-pill:999px;
    --shadow-sm:0 1px 2px rgba(16,32,64,.04), 0 6px 16px -8px rgba(16,32,64,.10);
    --shadow-md:0 2px 4px rgba(16,32,64,.05), 0 16px 32px -14px rgba(16,32,64,.16);
    --ease:cubic-bezier(.2,.7,.3,1); --dur:220ms;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;}
  body{
    margin:0;
    font-family:-apple-system,"PingFang SC","Microsoft YaHei","Noto Sans SC","Helvetica Neue",Arial,sans-serif;
    background:var(--bg);
    color:var(--ink);
    font-size:15.5px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{display:block;max-width:100%;height:auto;}
  a{color:var(--brand);text-decoration:none;transition:color var(--dur) var(--ease);}
  a:hover{color:var(--brand-deep);text-decoration:underline;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul{list-style:none;padding:0;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px;}

  .container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px;}
  @media (min-width:768px){.container{padding:0 24px;}}
  @media (min-width:1280px){.container{padding:0 32px;}}

  /* ---------- 顶部悬浮胶囊导航 ---------- */
  .site-header{position:sticky;top:16px;z-index:70;padding:0 16px;}
  .nav-shell{
    width:min(1180px,100%);
    margin:0 auto;
    display:flex;
    align-items:center;
    gap:14px;
    padding:8px 10px 8px 14px;
    background:rgba(255,255,255,.88);
    -webkit-backdrop-filter:blur(12px);
    backdrop-filter:blur(12px);
    border:1px solid var(--line);
    border-radius:var(--radius-pill);
    box-shadow:var(--shadow-sm);
    transition:box-shadow var(--dur) var(--ease), background var(--dur) var(--ease);
  }
  .site-header.is-scrolled .nav-shell{
    background:rgba(255,255,255,.96);
    box-shadow:var(--shadow-md);
  }
  .nav-logo{display:flex;align-items:center;gap:10px;flex:none;text-decoration:none;}
  .nav-logo:hover{text-decoration:none;}
  .brand-mark{
    width:32px;height:32px;flex:none;border-radius:10px;
    display:grid;place-items:center;
    background:linear-gradient(135deg,var(--brand),var(--accent));
    box-shadow:0 8px 16px -8px rgba(43,92,230,.75);
  }
  .brand-mark svg{width:17px;height:17px;}
  .brand-text{display:flex;flex-direction:column;line-height:1.28;}
  .brand-name{font-size:15px;font-weight:700;color:var(--ink);letter-spacing:-.01em;}
  .brand-sub{font-size:11.5px;color:var(--ink-3);}
  .nav-links{display:flex;align-items:center;gap:4px;margin:0 auto;}
  .nav-link{
    padding:8px 14px;border-radius:var(--radius-pill);
    font-size:14.5px;font-weight:500;color:var(--ink-2);
    transition:background var(--dur) var(--ease),color var(--dur) var(--ease);
  }
  .nav-link:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
  .nav-link.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
  .nav-cta{
    flex:none;display:inline-flex;align-items:center;justify-content:center;
    height:40px;padding:0 20px;border-radius:var(--radius-pill);
    background:var(--accent);color:#fff;font-size:14.5px;font-weight:600;
    box-shadow:0 10px 20px -12px rgba(255,122,69,.9);
    transition:background var(--dur) var(--ease),transform var(--dur) var(--ease);
  }
  .nav-cta:hover{background:var(--accent-hover);color:#fff;text-decoration:none;transform:translateY(-1px);}
  .nav-toggle{
    display:none;width:42px;height:42px;border-radius:14px;
    border:1px solid var(--line);background:#fff;
    align-items:center;justify-content:center;flex:none;
  }
  .nav-toggle svg{width:20px;height:20px;stroke:var(--ink-2);}
  .nav-mobile{
    display:none;
    width:min(1180px,100%);
    margin:10px auto 0;
    background:#fff;border:1px solid var(--line);border-radius:20px;
    box-shadow:var(--shadow-md);padding:14px;
  }
  .nav-mobile.is-open{display:block;}
  .nav-mobile a{
    display:block;padding:12px 14px;border-radius:14px;
    color:var(--ink-2);font-size:15px;font-weight:500;
  }
  .nav-mobile a:hover{background:var(--brand-soft);color:var(--brand);text-decoration:none;}
  .nav-mobile a.is-active{background:var(--brand-soft);color:var(--brand);font-weight:600;}
  .nav-mobile .nav-cta{width:100%;margin-top:8px;height:48px;}
  @media (max-width:860px){
    .nav-links,.nav-shell > .nav-cta{display:none;}
    .nav-toggle{display:flex;}
    .nav-logo{margin-right:auto;}
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:80px 0;}
  @media (max-width:767px){.section{padding:48px 0;}}
  .eyebrow{
    display:inline-flex;align-items:center;gap:6px;
    padding:5px 12px;border-radius:6px;
    background:var(--brand-soft);color:var(--brand);
    font-size:12.5px;font-weight:600;letter-spacing:.01em;
  }
  .eyebrow.is-accent{background:var(--accent-soft);color:var(--accent-hover);}
  .section-title{
    font-size:30px;line-height:1.3;font-weight:700;letter-spacing:-.01em;
    margin-top:16px;color:var(--ink);
  }
  @media (max-width:767px){.section-title{font-size:23px;}}
  .section-lead{margin-top:14px;color:var(--ink-2);font-size:15.5px;max-width:720px;}
  .section-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;gap:16px;}
  .text-link{font-weight:600;font-size:14.5px;display:inline-flex;align-items:center;gap:6px;}
  .text-link:hover{text-decoration:underline;}

  /* ---------- Hero ---------- */
  .hero{
    position:relative;
    margin:24px auto 0;
    width:min(1180px,calc(100% - 32px));
    min-height:300px;
    border-radius:var(--radius-lg);
    overflow:hidden;
    border:1px solid var(--line);
    background:linear-gradient(120deg,#EAF0FE 0%,#F6F8FC 48%,#FFF1EA 100%);
    box-shadow:var(--shadow-sm);
  }
  .hero-bg{
    position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-2.webp');
    background-size:cover;background-position:center;
    opacity:.17;
    -webkit-mask-image:linear-gradient(100deg,rgba(0,0,0,.85),rgba(0,0,0,.15) 70%,transparent);
    mask-image:linear-gradient(100deg,rgba(0,0,0,.85),rgba(0,0,0,.15) 70%,transparent);
  }
  .hero-inner{
    position:relative;z-index:2;
    display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,.85fr);
    gap:40px;align-items:center;
    padding:44px 8px 44px 0;
  }
  .hero h1{
    margin-top:16px;
    font-size:40px;line-height:1.24;font-weight:700;letter-spacing:-.01em;color:var(--ink);
  }
  @media (max-width:1023px){.hero h1{font-size:32px;}}
  @media (max-width:767px){.hero h1{font-size:27px;}}
  .hero-sub{margin-top:14px;font-size:16px;color:var(--ink-2);max-width:600px;}
  .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
  .anchors-label{
    display:block;font-size:12.5px;font-weight:600;color:var(--ink-3);
    letter-spacing:.06em;margin-bottom:10px;
  }
  .anchor-group{display:flex;flex-wrap:wrap;gap:8px;}
  .anchor-pill{
    display:inline-flex;align-items:center;
    padding:9px 16px;border-radius:var(--radius-pill);
    background:#fff;border:1px solid var(--line);
    font-size:14px;font-weight:500;color:var(--ink-2);
    box-shadow:var(--shadow-sm);
    transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
  }
  .anchor-pill:hover{color:var(--brand);border-color:var(--brand-soft);transform:translateY(-2px);text-decoration:none;}
  @media (max-width:900px){
    .hero-inner{grid-template-columns:1fr;gap:26px;padding:34px 0;}
    .anchor-group{flex-wrap:nowrap;overflow-x:auto;padding-bottom:6px;-webkit-overflow-scrolling:touch;}
    .anchor-pill{flex:none;white-space:nowrap;}
  }

  /* ---------- 按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    height:48px;padding:0 24px;border-radius:var(--radius-pill);
    font-size:15px;font-weight:600;border:1.5px solid transparent;
    transition:all var(--dur) var(--ease);white-space:nowrap;
  }
  .btn:hover{text-decoration:none;}
  .btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 22px -14px rgba(255,122,69,1);}
  .btn-primary:hover{background:var(--accent-hover);color:#fff;transform:translateY(-2px);box-shadow:0 18px 30px -16px rgba(242,101,47,1);}
  .btn-brand{background:var(--brand);color:#fff;box-shadow:0 12px 22px -14px rgba(43,92,230,1);}
  .btn-brand:hover{background:var(--brand-deep);color:#fff;transform:translateY(-2px);}
  .btn-ghost{border-color:var(--brand);color:var(--brand);background:transparent;}
  .btn-ghost:hover{background:var(--brand-soft);color:var(--brand);}
  .btn:active{transform:translateY(1px) scale(.99);}
  @media (max-width:767px){
    .btn{height:44px;padding:0 20px;font-size:14.5px;}
    .hero-actions{flex-direction:column;align-items:stretch;}
    .hero-actions .btn{width:100%;}
  }

  /* ---------- 速览 ---------- */
  .overview-grid{display:grid;grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);gap:48px;align-items:center;}
  @media (max-width:900px){.overview-grid{grid-template-columns:1fr;gap:28px;}}
  .overview-media{
    border-radius:var(--radius-card);overflow:hidden;
    border:1px solid var(--line);background:#fff;box-shadow:var(--shadow-sm);
    aspect-ratio:16/10;
  }
  .overview-media img{width:100%;height:100%;object-fit:cover;}
  .metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:26px;}
  @media (max-width:520px){.metrics{grid-template-columns:1fr;}}
  .metric{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:16px 18px;box-shadow:var(--shadow-sm);
  }
  .metric-value{font-size:22px;font-weight:700;color:var(--brand);letter-spacing:-.01em;}
  .metric-label{font-size:13px;color:var(--ink-3);margin-top:2px;}

  /* ---------- 卡片网格 ---------- */
  .cards-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:40px;}
  @media (max-width:1023px){.cards-grid{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (max-width:640px){.cards-grid{grid-template-columns:1fr;}}
  .card{
    display:flex;flex-direction:column;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    padding:24px;box-shadow:var(--shadow-sm);
    transition:transform var(--dur) var(--ease),box-shadow var(--dur) var(--ease),border-color var(--dur) var(--ease);
  }
  .card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--brand-soft);}
  .card-icon{
    width:44px;height:44px;border-radius:12px;display:grid;place-items:center;
    background:var(--brand-soft);color:var(--brand);margin-bottom:16px;
  }
  .card-icon.is-accent{background:var(--accent-soft);color:var(--accent-hover);}
  .card-icon.is-mint{background:rgba(18,180,160,.12);color:var(--mint);}
  .card h3{font-size:18px;font-weight:600;color:var(--ink);line-height:1.5;}
  .card p{margin-top:10px;font-size:14.5px;color:var(--ink-2);flex:1;}
  .card .text-link{margin-top:18px;}

  /* ---------- 对比区 ---------- */
  .compare{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;margin-top:40px;}
  @media (max-width:900px){.compare{grid-template-columns:1fr;}}
  .compare-col{
    background:#fff;border:1.5px solid var(--brand-soft);border-radius:var(--radius-lg);
    padding:28px;box-shadow:var(--shadow-sm);
  }
  .compare-col.is-accent{border-color:rgba(255,122,69,.45);}
  .compare-tag{
    display:inline-flex;align-items:center;
    padding:5px 12px;border-radius:6px;font-size:12.5px;font-weight:600;
    background:var(--brand-soft);color:var(--brand);
  }
  .compare-col.is-accent .compare-tag{background:var(--accent-soft);color:var(--accent-hover);}
  .compare-col h3{margin-top:16px;font-size:19px;font-weight:600;color:var(--ink);}
  .compare-list{margin-top:16px;}
  .compare-list li{
    position:relative;padding:12px 0 12px 22px;
    font-size:14.5px;color:var(--ink-2);
    border-bottom:1px dashed var(--line);
  }
  .compare-list li:last-child{border-bottom:0;padding-bottom:0;}
  .compare-list li::before{
    content:"";position:absolute;left:2px;top:21px;
    width:7px;height:7px;border-radius:50%;background:var(--brand);
  }
  .compare-col.is-accent .compare-list li::before{background:var(--accent);}

  /* ---------- 兼容信息条 ---------- */
  .compat-bar{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px;
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:26px 28px;box-shadow:var(--shadow-sm);margin-top:40px;
  }
  @media (max-width:900px){.compat-bar{grid-template-columns:repeat(2,minmax(0,1fr));}}
  @media (max-width:520px){.compat-bar{grid-template-columns:1fr;}}
  .compat-item{border-left:2px solid var(--brand-soft);padding-left:14px;}
  .compat-label{font-size:12.5px;color:var(--ink-3);}
  .compat-value{font-size:15.5px;font-weight:600;color:var(--ink);margin-top:4px;}

  /* ---------- FAQ ---------- */
  .faq-list{margin-top:36px;display:flex;flex-direction:column;gap:12px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);border-radius:var(--radius-card);
    box-shadow:var(--shadow-sm);overflow:hidden;
    transition:border-color var(--dur) var(--ease);
  }
  .faq-item.is-open{border-color:var(--brand-soft);}
  .faq-q{
    width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
    padding:0 24px;min-height:60px;text-align:left;
    font-size:15.5px;font-weight:600;color:var(--ink);
  }
  .faq-q .plus{
    flex:none;width:22px;height:22px;position:relative;
    transition:transform var(--dur) var(--ease);
  }
  .faq-q .plus::before,.faq-q .plus::after{
    content:"";position:absolute;background:var(--brand);border-radius:2px;
  }
  .faq-q .plus::before{left:0;right:0;top:10px;height:2px;}
  .faq-q .plus::after{top:0;bottom:0;left:10px;width:2px;transition:opacity var(--dur) var(--ease);}
  .faq-item.is-open .faq-q .plus{transform:rotate(180deg);}
  .faq-item.is-open .faq-q .plus::after{opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height var(--dur) var(--ease);}
  .faq-item.is-open .faq-a{max-height:360px;}
  .faq-a p{padding:0 24px 20px;color:var(--ink-2);font-size:14.5px;}

  /* ---------- CTA 带 ---------- */
  .cta-band{
    margin-top:8px;
    background:linear-gradient(120deg,#EAF0FE 0%,#F6F8FC 60%,#FFF1EA 100%);
    border:1px solid var(--line);border-radius:var(--radius-lg);
    padding:48px 40px;text-align:center;box-shadow:var(--shadow-sm);
    position:relative;overflow:hidden;
  }
  .cta-band::after{
    content:"";position:absolute;width:320px;height:320px;border-radius:50%;
    right:-120px;top:-140px;
    background:radial-gradient(circle,rgba(43,92,230,.16),transparent 70%);
  }
  .cta-band h2{font-size:27px;font-weight:700;color:var(--ink);letter-spacing:-.01em;position:relative;z-index:2;}
  .cta-band p{margin:14px auto 0;max-width:640px;color:var(--ink-2);position:relative;z-index:2;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;margin-top:28px;position:relative;z-index:2;}
  @media (max-width:767px){
    .cta-band{padding:32px 20px;}
    .cta-actions{flex-direction:column;}
    .cta-actions .btn{width:100%;}
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:#0B1B33;color:#C6D2E6;margin-top:80px;padding:64px 0 28px;}
  @media (max-width:767px){.site-footer{margin-top:48px;padding:44px 0 24px;}}
  .footer-grid{display:grid;grid-template-columns:1.6fr 1fr 1fr 1fr;gap:40px;}
  @media (max-width:900px){.footer-grid{grid-template-columns:repeat(2,1fr);gap:32px;}}
  @media (max-width:560px){.footer-grid{grid-template-columns:1fr;gap:28px;}}
  .footer-brand{display:flex;align-items:center;gap:10px;}
  .site-footer .brand-name{color:#fff;}
  .site-footer .brand-sub{color:#9FB0CC;}
  .footer-text{margin-top:16px;font-size:14px;color:#9FB0CC;max-width:360px;line-height:1.8;}
  .footer-title{font-size:15px;font-weight:600;color:#fff;margin-bottom:16px;}
  .footer-links li{margin-bottom:10px;}
  .footer-links a,.footer-links span{color:#C6D2E6;font-size:14px;}
  .footer-links a:hover{color:#fff;text-decoration:none;}
  .footer-bottom{
    margin-top:40px;padding-top:22px;
    border-top:1px solid rgba(255,255,255,.08);
    display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;
    font-size:13px;color:#8FA0BE;
  }

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