/* roulang page: index */
:root{
    --brand:#0F9D8C;
    --brand-deep:#0B7A6E;
    --brand-light:#E3F5F1;
    --accent:#FF7A45;
    --ink:#10201E;
    --bg:#F7F5F1;
    --card:#FFFFFF;
    --line:#E8E5DE;
    --muted:#5C6B68;
    --radius:22px;
    --radius-big:28px;
    --shadow:0 10px 30px rgba(15,157,140,.10);
    --shadow-lg:0 18px 40px rgba(15,157,140,.18);
  }
  *{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
  body{
    margin:0;
    background:var(--bg);
    color:var(--ink);
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,sans-serif;
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
  }
  a{color:inherit;text-decoration:none}
  img{display:block;max-width:100%}
  button{font:inherit;cursor:pointer;border:0;background:none;color:inherit}
  input{font:inherit}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px}
  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
  .sec{padding:88px 0}
  .sec-tight{padding:64px 0}
  @media(max-width:768px){
    .sec{padding:52px 0}
    .sec-tight{padding:40px 0}
    .container-x{padding:0 20px}
  }
  .brand-grad{background:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 52%,#FFB36B 100%)}
  .text-grad{background:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 100%);-webkit-background-clip:text;background-clip:text;color:transparent}

  /* 导航 */
  .site-header{
    position:sticky;top:0;z-index:60;background:#fff;
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(6px);
  }
  .nav-search{
    display:flex;align-items:center;gap:10px;
    background:#F3F1EC;border:1px solid var(--line);
    border-radius:999px;padding:6px 8px 6px 18px;height:46px;
  }
  .nav-search input{
    flex:1;border:0;background:transparent;outline:none;min-width:0;
    font-size:14.5px;color:var(--ink);
  }
  .nav-search input::placeholder{color:#9AA5A2}
  .nav-search .go{
    width:34px;height:34px;border-radius:999px;display:grid;place-items:center;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);color:#fff;flex:none;
    transition:transform .2s ease, box-shadow .22s ease;
  }
  .nav-search .go:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(15,157,140,.32)}
  .nav-pill{
    display:inline-flex;align-items:center;gap:6px;
    padding:9px 16px;border-radius:999px;font-size:14.5px;font-weight:500;
    color:#3B4A47;border:1px solid transparent;transition:all .22s ease;white-space:nowrap;
  }
  .nav-pill:hover{background:var(--brand-light);color:var(--brand-deep)}
  .nav-pill.is-active{background:var(--brand-light);color:var(--brand-deep);font-weight:600;border-color:rgba(15,157,140,.24)}
  .btn-download{
    display:inline-flex;align-items:center;gap:8px;padding:11px 22px;border-radius:999px;
    background:linear-gradient(135deg,#FF7A45,#FF9E6B);color:#fff;font-weight:600;font-size:14.5px;
    box-shadow:0 10px 24px rgba(255,122,69,.28);transition:all .22s ease;
  }
  .btn-download:hover{transform:translateY(-3px);box-shadow:0 16px 34px rgba(255,122,69,.34)}
  .btn-download:active{transform:scale(.98)}
  .mobile-panel{display:none}
  .mobile-panel.open{display:block}
  @media(max-width:1023px){
    .nav-search-desktop{display:none}
    .nav-links-desktop{display:none}
  }
  @media(min-width:1024px){
    .nav-hamburger{display:none}
    .mobile-search{display:none}
  }

  /* 按钮 */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 28px;border-radius:999px;font-weight:600;font-size:15px;
    transition:transform .22s ease, box-shadow .22s ease, background .22s ease, color .22s ease;
    border:1px solid transparent;
  }
  .btn-primary{background:linear-gradient(135deg,#FF7A45,#FF9E6B);color:#fff;box-shadow:0 10px 26px rgba(255,122,69,.28)}
  .btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 40px rgba(255,122,69,.34)}
  .btn-outline{border-color:rgba(15,157,140,.42);color:var(--brand-deep);background:#fff}
  .btn-outline:hover{transform:translateY(-3px);background:var(--brand-light);box-shadow:0 18px 40px rgba(15,157,140,.16)}
  .btn:active{transform:scale(.98)}
  .btn:disabled{opacity:.6;box-shadow:none;transform:none;cursor:not-allowed}

  .badge{
    display:inline-flex;align-items:center;gap:8px;background:#fff;
    border:1px solid rgba(15,157,140,.30);border-radius:999px;
    padding:8px 16px;font-size:13.5px;color:#39514D;
  }
  .badge b{font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums}

  /* 卡片 */
  .card{
    background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
    box-shadow:var(--shadow);transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease;
    overflow:hidden;
  }
  .card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lg);border-color:rgba(15,157,140,.24)}
  .card-media{overflow:hidden}
  .card-media img{transition:transform .34s ease}
  .card:hover .card-media img{transform:scale(1.03)}
  .card:hover .card-title{color:var(--brand-deep)}
  .clamp-2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
  .clamp-3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}

  .chip{
    display:inline-flex;align-items:center;padding:5px 12px;border-radius:999px;
    background:rgba(15,157,140,.10);color:var(--brand-deep);font-size:12.5px;font-weight:600;
  }

  /* 轮播 */
  .rail{
    display:flex;gap:24px;overflow-x:auto;scroll-snap-type:x mandatory;
    padding:6px 2px 20px;scrollbar-width:none;
  }
  .rail::-webkit-scrollbar{height:0}
  .rail > *{scroll-snap-align:start;flex:0 0 auto;width:320px}
  @media(max-width:640px){.rail > *{width:266px}}
  .rail-btn{
    width:44px;height:44px;border-radius:999px;background:#fff;border:1px solid var(--line);
    display:grid;place-items:center;box-shadow:var(--shadow);transition:all .22s ease;color:var(--brand-deep);
  }
  .rail-btn:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}

  /* FAQ */
  .faq-item{background:#fff;border:1px solid var(--line);border-radius:18px;box-shadow:var(--shadow);overflow:hidden;transition:border-color .22s ease}
  .faq-item + .faq-item{margin-top:14px}
  .faq-item.open{border-color:rgba(15,157,140,.30)}
  .faq-q{width:100%;display:flex;align-items:center;gap:14px;padding:20px 22px;text-align:left;font-weight:600;font-size:16.5px}
  .faq-num{
    flex:none;width:30px;height:30px;border-radius:999px;display:grid;place-items:center;
    background:rgba(15,157,140,.12);color:var(--brand-deep);font-size:13px;font-weight:700;font-variant-numeric:tabular-nums;
  }
  .faq-ic{position:relative;flex:none;margin-left:auto;width:18px;height:18px}
  .faq-ic::before,.faq-ic::after{
    content:"";position:absolute;background:var(--brand-deep);border-radius:2px;transition:transform .26s ease, opacity .26s ease;
  }
  .faq-ic::before{left:0;top:8px;width:18px;height:2px}
  .faq-ic::after{left:8px;top:0;width:2px;height:18px}
  .faq-item.open .faq-ic::after{transform:rotate(90deg);opacity:0}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease, padding .32s ease;padding:0 22px}
  .faq-item.open .faq-a{max-height:340px;padding:0 22px 22px}
  .faq-a p{margin:0;color:var(--muted);line-height:1.85;font-size:15px}

  /* 页脚 */
  .site-footer{background:var(--ink);color:#C8D3D0}
  .footer-link{display:inline-block;color:#B7C4C1;font-size:14.5px;transition:color .2s ease, transform .2s ease}
  .footer-link:hover{color:#7FE3D0;transform:translateX(3px)}
  .footer-title{color:#8FE9D8;font-size:14px;font-weight:600;letter-spacing:.3px;margin-bottom:16px}

  /* Hero 背景纹样 */
  .hero-wrap{position:relative;overflow:hidden}
  .hero-wrap::before{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-1.webp');
    background-size:cover;background-position:center;
    opacity:.10;pointer-events:none;
  }
  .hero-wrap::after{
    content:"";position:absolute;inset:0;
    background:linear-gradient(120deg,rgba(247,245,241,.94) 0%,rgba(247,245,241,.78) 45%,rgba(227,245,241,.72) 100%);
    pointer-events:none;
  }
  .hero-inner{position:relative;z-index:2}
  .device-frame{
    border-radius:var(--radius-big);padding:8px;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8 55%,#FFB36B);
    box-shadow:0 24px 60px rgba(15,157,140,.24);
  }
  .device-frame img{border-radius:22px;width:100%;height:100%;object-fit:cover}
  .stripe-h2::before{
    content:"";display:inline-block;width:4px;height:22px;border-radius:3px;
    background:linear-gradient(180deg,#0F9D8C,#37C6A8);margin-right:12px;vertical-align:-3px;
  }
  .stat-num{font-variant-numeric:tabular-nums;font-weight:700}
  .review-card{background:#fff;border-radius:var(--radius);padding:24px;height:100%;box-shadow:0 12px 30px rgba(0,0,0,.18)}
  .scroll-x-mobile{display:flex;gap:20px}
  @media(max-width:767px){
    .scroll-x-mobile{overflow-x:auto;scroll-snap-type:x mandatory;padding-bottom:12px}
    .scroll-x-mobile > *{flex:0 0 84%;scroll-snap-align:start}
  }

/* roulang page: category1 */
:root{
    --brand:#0F9D8C;
    --brand-deep:#0B7A6E;
    --brand-light:#E3F5F1;
    --accent:#FF7A45;
    --ink:#10201E;
    --sand:#F7F5F1;
    --line:#E8E5DE;
    --text:#1B2A28;
    --muted:#6B7C79;
    --radius:22px;
    --radius-lg:28px;
    --pill:999px;
    --shadow-soft:0 10px 30px rgba(15,157,140,.10);
    --shadow-lift:0 18px 40px rgba(15,157,140,.18);
    --ease:220ms ease;
  }

  *,*::before,*::after{box-sizing:border-box;}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
    background:var(--sand);
    color:var(--text);
    font-size:16px;
    line-height:1.85;
    -webkit-font-smoothing:antialiased;
  }
  img{max-width:100%;display:block;}
  a{color:inherit;text-decoration:none;}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
  input,select{font:inherit;color:inherit;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px;}
  @media (max-width:640px){ .container-x{padding:0 20px;} }

  .brand-grad{background:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 52%,#FFB36B 100%);}
  .text-brand{color:var(--brand);}

  /* ---------- 头部导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:80;
    background:rgba(255,255,255,.95);
    backdrop-filter:saturate(160%) blur(10px);
    border-bottom:1px solid var(--line);
  }
  .nav-search{
    display:flex;align-items:center;gap:10px;
    height:46px;padding:0 6px 0 16px;
    background:#F2F0EB;
    border:1px solid var(--line);
    border-radius:var(--pill);
    transition:border-color var(--ease),box-shadow var(--ease),background var(--ease);
  }
  .nav-search:focus-within{
    background:#fff;
    border-color:rgba(15,157,140,.45);
    box-shadow:0 0 0 4px rgba(15,157,140,.12);
  }
  .nav-search input{
    flex:1;min-width:0;border:0;background:transparent;outline:none;
    font-size:14px;line-height:1.4;color:var(--text);
  }
  .nav-search input::placeholder{color:#8A9996;}
  .nav-search .go{
    width:34px;height:34px;flex:none;border-radius:var(--pill);
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);
    display:grid;place-items:center;
    transition:transform var(--ease),box-shadow var(--ease);
  }
  .nav-search .go:hover{transform:scale(1.06);box-shadow:0 8px 18px rgba(15,157,140,.28);}
  .nav-search .go:active{transform:scale(.96);}

  .nav-pill{
    padding:8px 15px;border-radius:var(--pill);
    font-size:14px;font-weight:600;color:#42524F;
    white-space:nowrap;
    transition:background var(--ease),color var(--ease);
  }
  .nav-pill:hover{background:#EFF8F5;color:var(--brand-deep);}
  .nav-pill.is-active{background:var(--brand-light);color:var(--brand);}

  .btn-download{
    display:inline-flex;align-items:center;gap:7px;
    padding:10px 20px;border-radius:var(--pill);
    font-size:14px;font-weight:700;color:#fff;
    background:linear-gradient(135deg,#FF7A45,#FF9E6B);
    box-shadow:0 10px 22px rgba(255,122,69,.28);
    transition:transform var(--ease),box-shadow var(--ease),filter var(--ease);
  }
  .btn-download:hover{transform:translateY(-2px);box-shadow:0 16px 30px rgba(255,122,69,.34);filter:brightness(1.03);}
  .btn-download:active{transform:scale(.98);}

  .nav-hamburger{transition:background var(--ease),border-color var(--ease);}
  .nav-hamburger:hover{background:#F2F0EB;}

  .nav-search-mobile{display:none;}

  .mobile-menu{
    margin:0 0 16px;padding:14px;
    background:#fff;border:1px solid var(--line);
    border-radius:20px;box-shadow:var(--shadow-soft);
  }
  .mobile-menu a{
    display:block;padding:12px 14px;border-radius:14px;
    font-size:15px;font-weight:600;color:#33443F;
    transition:background var(--ease),color var(--ease);
  }
  .mobile-menu a:hover,.mobile-menu a.is-active{background:var(--brand-light);color:var(--brand);}

  @media (max-width:1023px){
    .nav-links-desktop,.nav-search-desktop{display:none;}
    .nav-search-mobile{display:flex;height:44px;margin-bottom:14px;}
  }

  /* ---------- 通用按钮 ---------- */
  .btn{
    display:inline-flex;align-items:center;justify-content:center;gap:8px;
    padding:13px 26px;border-radius:var(--pill);
    font-size:15px;font-weight:700;line-height:1;
    transition:transform var(--ease),box-shadow var(--ease),background var(--ease),border-color var(--ease),filter var(--ease);
  }
  .btn:active{transform:scale(.98);}
  .btn-primary{
    color:#fff;
    background:linear-gradient(135deg,#FF7A45,#FFA16D);
    box-shadow:0 12px 26px rgba(255,122,69,.28);
  }
  .btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(255,122,69,.34);filter:brightness(1.03);}
  .btn-ghost{
    color:var(--brand-deep);background:#fff;
    border:1.5px solid rgba(15,157,140,.45);
  }
  .btn-ghost:hover{transform:translateY(-3px);background:var(--brand-light);box-shadow:var(--shadow-soft);}
  .btn-white{
    color:var(--brand-deep);background:#fff;
    box-shadow:0 12px 26px rgba(10,60,54,.18);
  }
  .btn-white:hover{transform:translateY(-3px);}
  .btn-outline-white{
    color:#fff;border:1.5px solid rgba(255,255,255,.6);
  }
  .btn-outline-white:hover{background:rgba(255,255,255,.14);transform:translateY(-3px);}

  /* ---------- 徽章 / 标签 ---------- */
  .chip{
    display:inline-flex;align-items:center;gap:7px;
    padding:7px 16px;border-radius:var(--pill);
    background:rgba(15,157,140,.10);color:var(--brand-deep);
    font-size:13px;font-weight:700;
  }
  .chip.on-dark{background:rgba(255,255,255,.14);color:#D6F5EE;}
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 15px;border-radius:var(--pill);
    background:#fff;border:1px solid rgba(15,157,140,.30);
    font-size:13px;font-weight:600;color:#35504B;
    box-shadow:0 6px 16px rgba(15,157,140,.07);
  }
  .badge .dot{width:7px;height:7px;border-radius:50%;background:var(--brand);flex:none;}
  .badge .num{font-weight:700;color:var(--brand-deep);font-variant-numeric:tabular-nums;}
  .tag{
    display:inline-flex;align-items:center;
    padding:5px 12px;border-radius:var(--pill);
    background:rgba(15,157,140,.10);color:var(--brand-deep);
    font-size:12px;font-weight:700;letter-spacing:.2px;
  }
  .tag-plain{
    display:inline-block;padding:6px 13px;border-radius:var(--pill);
    background:#F2F0EB;color:#54635F;font-size:12.5px;font-weight:600;
    transition:background var(--ease),color var(--ease);
  }
  .tag-plain:hover{background:var(--brand-light);color:var(--brand-deep);}

  /* ---------- 板块 ---------- */
  .section{padding:88px 0;}
  .section-tight{padding:64px 0;}
  .section-white{background:#fff;}
  @media (max-width:768px){
    .section{padding:52px 0;}
    .section-tight{padding:44px 0;}
  }
  .section-head{max-width:720px;margin-bottom:40px;}
  .section-head h2{
    margin:0;font-size:28px;line-height:1.38;font-weight:700;color:var(--ink);
  }
  .section-head p{margin:14px 0 0;font-size:15.5px;line-height:1.95;color:var(--muted);}
  @media (max-width:640px){
    .section-head h2{font-size:23px;}
    .section-head{margin-bottom:28px;}
  }

  /* ---------- 首屏横幅 ---------- */
  .page-hero{padding:36px 0 8px;}
  .hero-banner{
    position:relative;overflow:hidden;
    border-radius:26px;
    padding:56px 52px;
    background-image:
      linear-gradient(120deg,rgba(247,245,241,.94) 0%,rgba(227,245,241,.92) 58%,rgba(227,245,241,.86) 100%),
      url('/assets/images/backpic/back-1.webp');
    background-size:cover;
    background-position:center right;
    border:1px solid rgba(15,157,140,.14);
  }
  .hero-banner::after{
    content:"";position:absolute;inset:0;
    background-image:url('/assets/images/backpic/back-3.webp');
    background-size:cover;background-position:center;
    opacity:.05;pointer-events:none;
  }
  .hero-banner > *{position:relative;z-index:2;}
  .hero-device{
    border-radius:var(--radius-lg);
    padding:10px;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8,#FFB36B);
    box-shadow:0 24px 50px rgba(15,157,140,.20);
  }
  .hero-device img{
    width:100%;height:auto;aspect-ratio:16/11;object-fit:cover;
    border-radius:20px;background:#E9EDEA;
  }
  @media (max-width:1023px){
    .hero-banner{padding:40px 26px;}
    .hero-device{margin-top:28px;}
  }

  /* ---------- 目录布局：左筛选 + 右两列 ---------- */
  .catalog-layout{display:grid;grid-template-columns:240px 1fr;gap:32px;align-items:start;}
  .filter-aside{
    background:#fff;border:1px solid var(--line);
    border-radius:var(--radius);padding:22px 20px;
    box-shadow:var(--shadow-soft);
    position:sticky;top:104px;
  }
  .filter-title{
    font-size:13px;font-weight:700;color:var(--brand-deep);
    letter-spacing:.4px;margin-bottom:12px;
  }
  .pill-list{display:flex;flex-direction:column;gap:8px;}
  .side-pill{
    text-align:left;padding:10px 15px;border-radius:var(--pill);
    font-size:14px;font-weight:600;color:#44534F;
    background:#F5F3EF;
    transition:background var(--ease),color var(--ease),transform var(--ease);
  }
  .side-pill:hover{background:var(--brand-light);color:var(--brand-deep);transform:translateX(2px);}
  .side-pill.is-active{
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);
    color:#fff;box-shadow:0 10px 22px rgba(15,157,140,.24);
  }
  .filter-select{
    width:100%;height:42px;padding:0 14px;
    border-radius:14px;border:1px solid var(--line);
    background:#F5F3EF;font-size:14px;color:#3B4A46;
    outline:none;transition:border-color var(--ease),box-shadow var(--ease);
  }
  .filter-select:focus{border-color:rgba(15,157,140,.5);box-shadow:0 0 0 4px rgba(15,157,140,.12);background:#fff;}
  .tag-cloud{display:flex;flex-wrap:wrap;gap:8px;}

  @media (max-width:1023px){
    .catalog-layout{grid-template-columns:1fr;gap:22px;}
    .filter-aside{position:static;padding:16px;}
    .pill-list{flex-direction:row;overflow-x:auto;gap:8px;padding-bottom:4px;}
    .side-pill{white-space:nowrap;flex:none;}
    .side-pill:hover{transform:none;}
  }

  .module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:24px;}
  @media (max-width:767px){ .module-grid{grid-template-columns:1fr;} }

  /* ---------- 卡片 ---------- */
  .module-card{
    background:#fff;border:1px solid var(--line);
    border-radius:var(--radius);overflow:hidden;
    box-shadow:var(--shadow-soft);
    display:flex;flex-direction:column;
    transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease);
  }
  .module-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);border-color:rgba(15,157,140,.22);}
  .card-media{overflow:hidden;aspect-ratio:16/10;background:#EDF1EF;border-bottom:1px solid var(--line);}
  .card-media img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease;}
  .module-card:hover .card-media img{transform:scale(1.03);}
  .card-title{
    margin:12px 0 8px;font-size:19px;line-height:1.45;font-weight:600;color:var(--ink);
    transition:color var(--ease);
  }
  .module-card:hover .card-title{color:var(--brand-deep);}
  .card-text{
    margin:0;font-size:14.5px;line-height:1.9;color:var(--muted);
    display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  }
  .card-link{
    display:inline-flex;align-items:center;gap:6px;margin-top:16px;
    font-size:14px;font-weight:700;color:var(--brand);
    position:relative;
  }
  .card-link::after{
    content:"";position:absolute;left:0;bottom:-4px;height:2px;width:0;
    background:var(--brand);transition:width var(--ease);
  }
  .card-link:hover::after{width:100%;}

  /* ---------- 步骤 ---------- */
  .step-grid{
    display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
    gap:22px;list-style:none;padding:0;margin:0;
  }
  @media (max-width:1023px){ .step-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (max-width:560px){ .step-grid{grid-template-columns:1fr;} }
  .step-card{
    background:#fff;border:1px solid var(--line);
    border-radius:var(--radius);padding:26px 22px;
    box-shadow:var(--shadow-soft);
    transition:transform var(--ease),box-shadow var(--ease);
  }
  .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-lift);}
  .step-no{
    display:inline-flex;align-items:center;justify-content:center;
    width:38px;height:38px;border-radius:var(--pill);
    background:var(--brand-light);color:var(--brand-deep);
    font-weight:700;font-size:15px;font-variant-numeric:tabular-nums;
  }
  .step-card h3{margin:16px 0 8px;font-size:17px;font-weight:600;color:var(--ink);}
  .step-card p{margin:0;font-size:14.5px;line-height:1.9;color:var(--muted);}

  /* ---------- 深色场景区 ---------- */
  .dark-band{background:var(--ink);color:#EAF4F2;}
  .dark-band .section-head h2{color:#fff;}
  .dark-band .section-head p{color:#9FB0AD;}
  .scene-card{
    background:rgba(255,255,255,.06);
    border:1px solid rgba(255,255,255,.12);
    border-radius:var(--radius);padding:24px 22px;
    transition:transform var(--ease),background var(--ease),border-color var(--ease);
  }
  .scene-card:hover{transform:translateY(-3px);background:rgba(255,255,255,.10);border-color:rgba(55,198,168,.45);}
  .scene-card h3{margin:0 0 10px;font-size:17px;font-weight:600;color:#fff;}
  .scene-card p{margin:0;font-size:14.5px;line-height:1.9;color:#A9BCB9;}

  /* ---------- FAQ ---------- */
  .faq-list{display:flex;flex-direction:column;gap:14px;}
  .faq-item{
    background:#fff;border:1px solid var(--line);
    border-radius:18px;overflow:hidden;
    box-shadow:0 6px 18px rgba(15,157,140,.06);
    transition:border-color var(--ease),box-shadow var(--ease);
  }
  .faq-item.is-open{border-color:rgba(15,157,140,.34);box-shadow:var(--shadow-soft);}
  .faq-q{
    width:100%;display:flex;align-items:center;gap:16px;
    padding:20px 22px;text-align:left;
  }
  .faq-no{
    flex:none;width:32px;height:32px;border-radius:var(--pill);
    background:var(--brand-light);color:var(--brand-deep);
    display:grid;place-items:center;font-size:13px;font-weight:700;
    font-variant-numeric:tabular-nums;
  }
  .faq-text{flex:1;font-size:16px;font-weight:600;color:var(--ink);line-height:1.6;}
  .faq-icon{position:relative;width:22px;height:22px;flex:none;}
  .faq-icon::before,.faq-icon::after{
    content:"";position:absolute;left:50%;top:50%;
    background:var(--brand);border-radius:2px;
    transform:translate(-50%,-50%);
    transition:transform .28s ease,opacity .28s ease;
  }
  .faq-icon::before{width:14px;height:2px;}
  .faq-icon::after{width:2px;height:14px;}
  .faq-item.is-open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
  .faq-a{max-height:0;overflow:hidden;transition:max-height .32s ease;}
  .faq-a p{
    margin:0;padding:0 22px 22px 70px;
    font-size:15px;line-height:1.85;color:#4E5F5B;
  }
  @media (max-width:640px){
    .faq-q{padding:16px;}
    .faq-text{font-size:15px;}
    .faq-a p{padding:0 16px 18px 16px;}
  }

  /* ---------- CTA ---------- */
  .cta-band{
    border-radius:var(--radius-lg);
    padding:52px 48px;
    background:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 55%,#FFB36B 100%);
    color:#fff;
    box-shadow:0 24px 48px rgba(15,157,140,.24);
    display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:28px;
  }
  .cta-band h2{margin:0;font-size:26px;font-weight:700;color:#fff;}
  .cta-band p{margin:12px 0 0;font-size:15px;line-height:1.9;color:rgba(255,255,255,.92);max-width:560px;}
  @media (max-width:768px){
    .cta-band{padding:34px 24px;}
    .cta-band h2{font-size:22px;}
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#9FB0AD;}
  .footer-title{font-size:14px;font-weight:700;color:#D6F5EE;margin-bottom:18px;letter-spacing:.3px;}
  .footer-link{
    position:relative;font-size:14px;color:#9FB0AD;
    transition:color var(--ease);
  }
  .footer-link::after{
    content:"";position:absolute;left:0;bottom:-3px;width:0;height:1px;
    background:#A8E6DA;transition:width var(--ease);
  }
  .footer-link:hover{color:#A8E6DA;}
  .footer-link:hover::after{width:100%;}

  .sr-only{
    position:absolute;width:1px;height:1px;padding:0;margin:-1px;
    overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0;
  }

/* roulang page: article */
:root{
  --brand:#0F9D8C;
  --brand-deep:#0B7A6E;
  --brand-light:#E3F5F1;
  --accent:#FF7A45;
  --ink:#10201E;
  --bg:#F7F5F1;
  --card:#FFFFFF;
  --line:#E8E5DE;
  --muted:#6B7C79;
  --text:#22322F;
  --radius:22px;
  --radius-lg:28px;
  --shadow:0 10px 30px rgba(15,157,140,.10);
  --shadow-hover:0 18px 40px rgba(15,157,140,.18);
  --ease:220ms ease;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input{font-family:inherit}
button{cursor:pointer}
a:focus-visible,button:focus-visible,input:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:999px}
.container-x{width:100%;max-width:1200px;margin:0 auto;padding:0 24px}
.brand-grad{background:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 58%,#FFB36B 100%)}
.shadow-soft{box-shadow:var(--shadow)}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.text-brand{color:var(--brand)}

/* ============ header ============ */
.site-header{position:sticky;top:0;z-index:60;background:#fff;border-bottom:1px solid var(--line)}
.nav-row{display:flex;align-items:center;gap:16px;padding:12px 0}
.nav-search{display:flex;align-items:center;gap:10px;background:#F1F4F3;border:1px solid var(--line);border-radius:999px;padding:6px 6px 6px 16px;transition:box-shadow var(--ease),border-color var(--ease)}
.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 4px rgba(15,157,140,.12)}
.nav-search input{flex:1;min-width:0;border:0;background:transparent;outline:none;font-size:14px;color:var(--text);padding:8px 0}
.nav-search input::placeholder{color:#93A19E}
.nav-search .go{width:38px;height:38px;border:0;border-radius:999px;display:grid;place-items:center;background:linear-gradient(135deg,#0F9D8C,#37C6A8);transition:transform var(--ease),filter var(--ease)}
.nav-search .go:hover{filter:brightness(1.06);transform:translateY(-1px)}
.nav-search-desktop{flex:1;max-width:520px;margin:0 auto}
.nav-search-mobile{display:none;margin:0 0 12px}
.nav-pill{padding:8px 14px;border-radius:999px;font-size:14px;color:#41524F;transition:background var(--ease),color var(--ease)}
.nav-pill:hover{background:var(--brand-light);color:var(--brand-deep)}
.nav-pill.is-active{background:var(--brand-light);color:var(--brand-deep);font-weight:600}
.nav-links-desktop{display:flex;align-items:center}
.btn-download{display:inline-flex;align-items:center;gap:8px;padding:10px 20px;border-radius:999px;color:#fff;font-size:14px;font-weight:600;background:linear-gradient(135deg,#0F9D8C,#37C6A8);box-shadow:var(--shadow);transition:transform var(--ease),box-shadow var(--ease),filter var(--ease)}
.btn-download:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);filter:brightness(1.05)}
.btn-download:active{transform:scale(.98)}
.nav-hamburger{display:none;background:#fff;border:1px solid var(--line);width:40px;height:40px;border-radius:12px;place-items:center}
.mobile-menu{display:none;background:#fff;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-hover);padding:14px;margin-bottom:14px}
.mobile-menu.is-open{display:block}
.mobile-link{display:block;padding:12px 14px;border-radius:14px;font-size:15px;color:#3A4B48;transition:background var(--ease),color var(--ease)}
.mobile-link:hover{background:var(--brand-light);color:var(--brand-deep)}
.mobile-link.is-active{background:var(--brand-light);color:var(--brand-deep);font-weight:600}

/* ============ 内页 banner / 面包屑 ============ */
.article-hero{position:relative;overflow:hidden;border-bottom:1px solid var(--line);background:#fff}
.article-hero .hero-bg{position:absolute;inset:0;background:url(/assets/images/backpic/back-2.webp) center/cover no-repeat;opacity:.10}
.article-hero .hero-mask{position:absolute;inset:0;background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(247,245,241,.96))}
.article-hero .hero-inner{position:relative;padding:30px 0 40px}
.crumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-size:13px;color:var(--muted)}
.crumb a{color:var(--muted);transition:color var(--ease)}
.crumb a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.crumb .sep{color:#C6CFCD}
.crumb .now{max-width:340px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:#465855}
.chip{display:inline-flex;align-items:center;gap:6px;padding:5px 14px;border-radius:999px;font-size:13px;font-weight:600;background:rgba(15,157,140,.10);color:var(--brand-deep)}
.article-title{font-size:34px;line-height:1.35;font-weight:700;letter-spacing:normal;margin:16px 0 0;color:var(--ink)}
.meta-row{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;margin-top:18px;font-size:13px;color:var(--muted)}
.meta-row .dot{width:5px;height:5px;border-radius:999px;background:#CBD6D3}
.lead{max-width:820px;margin-top:18px;font-size:16px;line-height:1.9;color:#4A5C59}

/* ============ 正文 ============ */
.article-main{padding:56px 0 0}
.article-wrap{max-width:800px;margin:0 auto}
.article-body{font-size:17px;line-height:1.95;color:var(--text)}
.article-body p{margin:0 0 1.15em}
.article-body h2{position:relative;font-size:24px;line-height:1.5;font-weight:700;color:var(--ink);margin:1.8em 0 .8em;padding-left:16px}
.article-body h2::before{content:"";position:absolute;left:0;top:.16em;bottom:.16em;width:4px;border-radius:4px;background:linear-gradient(180deg,#0F9D8C,#37C6A8)}
.article-body h3{font-size:20px;line-height:1.55;font-weight:600;color:var(--ink);margin:1.5em 0 .6em}
.article-body h2:first-child,.article-body h3:first-child{margin-top:0}
.article-body ul,.article-body ol{padding-left:1.35em;margin:0 0 1.15em}
.article-body li{margin:.42em 0}
.article-body blockquote{margin:1.6em 0;padding:16px 22px;background:#F3FAF8;border-left:3px solid var(--brand);border-radius:0 14px 14px 0;color:#2F4240}
.article-body img{border-radius:16px;margin:24px 0;border:1px solid var(--line);object-fit:cover}
.article-body table{display:block;width:100%;border-collapse:collapse;overflow-x:auto;margin:24px 0}
.article-body th,.article-body td{border:1px solid var(--line);padding:10px 14px;font-size:15px;white-space:nowrap}
.article-body th{background:rgba(15,157,140,.08);color:var(--brand-deep);font-weight:600}
.article-body a{color:var(--brand-deep);text-decoration:underline;text-underline-offset:3px}
.article-body a:hover{color:var(--ink)}
.article-body code{background:#F1F4F3;border-radius:6px;padding:2px 6px;font-size:15px}
.article-empty{background:#fff;border:1px solid var(--line);border-radius:var(--radius-lg);padding:48px 32px;text-align:center;box-shadow:var(--shadow)}
.article-empty h2{margin:0 0 10px;font-size:22px;font-weight:700;color:var(--ink)}
.article-empty p{margin:0 auto 22px;max-width:460px;color:var(--muted);font-size:15px}

/* ============ 标签 / 上下篇 / 推荐 ============ */
.tag-row{display:flex;flex-wrap:wrap;gap:10px;margin:40px 0 0;padding-top:28px;border-top:1px solid var(--line)}
.tag{display:inline-flex;align-items:center;padding:7px 16px;border-radius:999px;font-size:13px;color:#41524F;background:#fff;border:1px solid var(--line);transition:all var(--ease)}
.tag:hover{border-color:var(--brand);color:var(--brand-deep);background:var(--brand-light);transform:translateY(-2px)}
.nav-pair{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:36px}
.pair-card{display:block;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 24px;transition:transform var(--ease),box-shadow var(--ease),border-color var(--ease)}
.pair-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:rgba(15,157,140,.35)}
.pair-card .k{font-size:12px;letter-spacing:.04em;color:var(--brand-deep);font-weight:600}
.pair-card .t{margin-top:8px;font-size:17px;font-weight:600;color:var(--ink);line-height:1.55}
.pair-card .d{margin-top:6px;font-size:14px;color:var(--muted);line-height:1.8}
.sec-head{display:flex;align-items:flex-end;justify-content:space-between;gap:16px;margin:0 0 24px}
.sec-head h2{font-size:26px;font-weight:700;color:var(--ink);margin:0;line-height:1.4}
.sec-head .more{font-size:14px;color:var(--brand-deep);position:relative}
.sec-head .more::after{content:"";position:absolute;left:0;right:0;bottom:-3px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:center;transition:transform var(--ease)}
.sec-head .more:hover::after{transform:scaleX(1)}
.rec-sec{padding:64px 0 0}
.rec-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.rec-card{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:transform var(--ease),box-shadow var(--ease)}
.rec-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover)}
.rec-card .thumb{overflow:hidden;aspect-ratio:16/10}
.rec-card .thumb img{width:100%;height:100%;object-fit:cover;transition:transform 420ms ease}
.rec-card:hover .thumb img{transform:scale(1.03)}
.rec-card .body{padding:18px 20px 22px}
.rec-card .cat{font-size:12px;font-weight:600;color:var(--brand-deep);background:rgba(15,157,140,.10);padding:4px 12px;border-radius:999px;display:inline-block}
.rec-card h3{margin:12px 0 8px;font-size:17px;font-weight:600;line-height:1.6;color:var(--ink);transition:color var(--ease)}
.rec-card:hover h3{color:var(--brand-deep)}
.rec-card p{margin:0;font-size:14px;line-height:1.8;color:var(--muted)}
.back-row{padding:48px 0 0;text-align:center}
.btn-primary{display:inline-flex;align-items:center;gap:8px;padding:14px 30px;border-radius:999px;color:#fff;font-size:15px;font-weight:600;background:linear-gradient(135deg,#FF7A45,#FFB36B);box-shadow:0 10px 26px rgba(255,122,69,.28);transition:transform var(--ease),box-shadow var(--ease),filter var(--ease)}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(255,122,69,.34);filter:brightness(1.04)}
.btn-primary:active{transform:scale(.98)}
.btn-ghost{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:999px;font-size:15px;font-weight:600;color:var(--brand-deep);border:1.5px solid var(--brand);background:#fff;transition:background var(--ease),transform var(--ease),box-shadow var(--ease)}
.btn-ghost:hover{background:var(--brand-light);transform:translateY(-2px);box-shadow:var(--shadow)}

/* ============ footer ============ */
.site-footer{background:var(--ink);color:#C9D6D3}
.footer-title{font-size:14px;font-weight:600;color:#8FE4D3;margin-bottom:18px}
.footer-link{font-size:14px;color:#C9D6D3;position:relative;transition:color var(--ease)}
.footer-link::after{content:"";position:absolute;left:0;bottom:-3px;width:100%;height:1px;background:currentColor;transform:scaleX(0);transform-origin:left;transition:transform var(--ease)}
.footer-link:hover{color:#8FE4D3}
.footer-link:hover::after{transform:scaleX(1)}
.site-footer .grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:40px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer ul li+li{margin-top:12px}
.footer-bottom{margin-top:48px;padding-top:24px;border-top:1px solid rgba(255,255,255,.12);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px}

/* ============ 响应式 ============ */
@media (max-width:1023px){
  .nav-search-desktop,.nav-links-desktop{display:none}
  .nav-hamburger{display:grid}
  .nav-search-mobile{display:flex}
  .article-title{font-size:28px}
  .rec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer .grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:767px){
  .container-x{padding:0 20px}
  .article-main{padding:36px 0 0}
  .article-hero .hero-inner{padding:22px 0 30px}
  .article-title{font-size:24px;line-height:1.45}
  .article-body{font-size:16px;line-height:1.9}
  .article-body h2{font-size:20px}
  .article-body h3{font-size:18px}
  .nav-pair{grid-template-columns:1fr}
  .rec-grid{grid-template-columns:1fr}
  .sec-head{flex-direction:column;align-items:flex-start;gap:8px}
  .rec-sec{padding:44px 0 0}
}
@media (max-width:560px){
  .site-footer .grid{grid-template-columns:1fr}
  .crumb .now{max-width:200px}
}

/* roulang page: category2 */
:root{
    --brand:#0F9D8C;
    --brand-deep:#0B7A6E;
    --brand-soft:#E3F5F1;
    --accent:#FF7A45;
    --ink:#10201E;
    --paper:#F7F5F1;
    --card:#FFFFFF;
    --line:#E8E5DE;
    --muted:#5C6B68;
    --radius-card:22px;
    --radius-big:28px;
    --shadow-soft:0 10px 30px rgba(15,157,140,.10);
    --shadow-hover:0 18px 40px rgba(15,157,140,.18);
  }

  *{box-sizing:border-box;}
  html{scroll-behavior:smooth;}
  body{
    margin:0;
    font-family:"PingFang SC","HarmonyOS Sans SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
    background:var(--paper);
    color:var(--ink);
    font-size:16px;
    line-height:1.75;
    -webkit-font-smoothing:antialiased;
    overflow-x:hidden;
  }
  a{color:inherit;text-decoration:none;}
  img{max-width:100%;display:block;}
  button{font-family:inherit;border:0;background:none;cursor:pointer;color:inherit;}
  input{font-family:inherit;}
  h1,h2,h3,h4,p,ul,ol{margin:0;}
  ul,ol{padding:0;list-style:none;}
  :focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:6px;}

  .container-x{max-width:1200px;margin:0 auto;padding:0 24px;}
  @media (max-width:768px){ .container-x{padding:0 20px;} }

  .brand-grad{background-image:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 55%,#FFB36B 100%);}
  .text-brand{color:var(--brand);}
  .shadow-soft{box-shadow:var(--shadow-soft);}

  /* ---------- 导航 ---------- */
  .site-header{
    position:sticky;top:0;z-index:60;
    background:#fff;
    border-bottom:1px solid var(--line);
    box-shadow:0 1px 0 rgba(16,32,30,.02);
  }
  .header-row{display:flex;align-items:center;gap:16px;padding:12px 0;}
  .nav-search{
    display:flex;align-items:center;gap:10px;
    height:46px;
    padding:6px 6px 6px 16px;
    background:#F4F6F5;
    border:1px solid var(--line);
    border-radius:999px;
    transition:border-color .2s ease, box-shadow .2s ease, background .2s ease;
  }
  .nav-search:focus-within{
    background:#fff;
    border-color:var(--brand);
    box-shadow:0 0 0 4px rgba(15,157,140,.12);
  }
  .nav-search input{
    flex:1;min-width:0;
    border:0;background:transparent;outline:none;
    font-size:14px;color:var(--ink);
  }
  .nav-search input::placeholder{color:#8A9996;}
  .nav-search .go{
    width:34px;height:34px;flex:none;
    border-radius:999px;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);
    display:grid;place-items:center;
    transition:transform .2s ease, box-shadow .2s ease;
  }
  .nav-search .go:hover{transform:translateY(-1px);box-shadow:0 8px 18px rgba(15,157,140,.30);}

  .nav-links-desktop{display:flex;align-items:center;gap:4px;margin-left:auto;}
  .nav-pill{
    display:inline-flex;align-items:center;
    padding:8px 14px;border-radius:999px;
    font-size:14px;color:#41524F;
    white-space:nowrap;
    transition:background .2s ease,color .2s ease;
  }
  .nav-pill:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .nav-pill.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}

  .btn-download{
    display:inline-flex;align-items:center;gap:6px;
    padding:10px 18px;border-radius:999px;
    font-size:14px;font-weight:600;color:#fff;
    background:linear-gradient(135deg,#FF8A55,#FF7A45);
    box-shadow:0 8px 20px rgba(255,122,69,.28);
    transition:transform .22s ease,box-shadow .22s ease,filter .22s ease;
  }
  .btn-download:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(255,122,69,.34);filter:saturate(1.06);}
  .btn-download:active{transform:scale(.98);}

  .nav-hamburger{
    margin-left:auto;
    width:40px;height:40px;border-radius:14px;
    border:1px solid var(--line);
    display:grid;place-items:center;
    background:#fff;
    transition:background .2s ease,border-color .2s ease;
  }
  .nav-hamburger:hover{background:var(--brand-soft);border-color:#BFE7DF;}

  .nav-search-mobile{display:none;}
  .mobile-menu{
    display:none;
    padding:12px;
    margin-bottom:14px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:20px;
    box-shadow:var(--shadow-soft);
  }
  .mobile-menu.is-open{display:block;}
  .mm-link{
    display:block;
    padding:12px 14px;border-radius:14px;
    font-size:15px;color:#2C3B38;
    transition:background .2s ease,color .2s ease;
  }
  .mm-link:hover{background:var(--brand-soft);color:var(--brand-deep);}
  .mm-link.is-active{background:var(--brand-soft);color:var(--brand-deep);font-weight:600;}

  @media (min-width:1025px){
    .site-header .nav-hamburger{display:none !important;}
  }
  @media (max-width:1024px){
    .nav-links-desktop{display:none;}
    .nav-search-desktop{display:none;}
    .nav-search-mobile{display:flex;width:100%;margin-bottom:14px;}
    .header-row{padding:12px 0 6px;}
  }

  /* ---------- 通用板块 ---------- */
  .section{padding:88px 0;}
  @media (max-width:768px){ .section{padding:52px 0;} }

  .section-title{font-size:28px;line-height:1.35;font-weight:700;letter-spacing:-.2px;}
  @media (max-width:768px){ .section-title{font-size:23px;} }
  .section-sub{margin-top:12px;color:var(--muted);font-size:15px;line-height:1.9;max-width:760px;}

  .btn-primary{
    display:inline-flex;align-items:center;gap:8px;
    padding:13px 26px;border-radius:999px;
    font-size:15px;font-weight:600;color:#fff;
    background:linear-gradient(135deg,#FF8A55,#FF7A45);
    box-shadow:0 10px 26px rgba(255,122,69,.28);
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 38px rgba(255,122,69,.32);}
  .btn-primary:active{transform:scale(.98);}

  .btn-ghost{
    display:inline-flex;align-items:center;gap:8px;
    padding:12px 24px;border-radius:999px;
    font-size:15px;font-weight:600;color:var(--brand-deep);
    border:1.5px solid rgba(15,157,140,.45);
    background:#fff;
    transition:transform .22s ease,border-color .22s ease,background .22s ease,box-shadow .22s ease;
  }
  .btn-ghost:hover{
    transform:translateY(-3px);
    border-color:var(--brand);
    background:var(--brand-soft);
    box-shadow:var(--shadow-soft);
  }
  .btn-ghost:active{transform:scale(.98);}

  /* ---------- 分类页横幅 ---------- */
  .cat-hero{
    position:relative;
    overflow:hidden;
    background:
      linear-gradient(135deg, rgba(227,245,241,.94) 0%, rgba(247,245,241,.96) 62%, rgba(255,235,222,.82) 100%),
      url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    border-bottom:1px solid var(--line);
  }
  .cat-hero-inner{
    display:grid;
    grid-template-columns:minmax(0,1fr) 380px;
    gap:48px;
    align-items:center;
    padding:64px 0 68px;
  }
  .crumb{font-size:13px;color:#6C7B78;display:flex;align-items:center;gap:6px;flex-wrap:wrap;}
  .crumb a:hover{color:var(--brand-deep);text-decoration:underline;text-underline-offset:4px;}
  .cat-hero h1{
    margin-top:16px;
    font-size:42px;line-height:1.2;font-weight:700;letter-spacing:-.6px;
  }
  .cat-hero p.lead{
    margin-top:16px;
    font-size:16px;line-height:1.9;color:#40514E;max-width:620px;
  }
  .badge-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:24px;}
  .badge{
    display:inline-flex;align-items:center;gap:8px;
    padding:8px 16px;border-radius:999px;
    background:#fff;
    border:1px solid rgba(15,157,140,.30);
    font-size:13px;color:#2C3B38;
    box-shadow:0 6px 16px rgba(15,157,140,.08);
  }
  .badge b{font-weight:700;font-variant-numeric:tabular-nums;color:var(--brand-deep);}

  .hero-search{
    display:flex;align-items:center;gap:10px;
    padding:8px 8px 8px 20px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:999px;
    box-shadow:var(--shadow-soft);
    transition:border-color .2s ease,box-shadow .2s ease;
  }
  .hero-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 5px rgba(15,157,140,.12);}
  .hero-search input{
    flex:1;min-width:0;border:0;background:transparent;outline:none;
    font-size:15px;color:var(--ink);
  }
  .hero-search input::placeholder{color:#8A9996;}
  .hero-search .go{
    flex:none;
    padding:11px 22px;border-radius:999px;
    font-size:14px;font-weight:600;color:#fff;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);
    transition:filter .2s ease,transform .2s ease;
  }
  .hero-search .go:hover{filter:saturate(1.1);transform:translateY(-1px);}
  .hero-side-note{
    margin-top:14px;font-size:13px;color:#6C7B78;display:flex;gap:8px;align-items:flex-start;
  }

  @media (max-width:1024px){
    .cat-hero-inner{grid-template-columns:1fr;gap:30px;padding:44px 0 48px;}
    .cat-hero h1{font-size:34px;}
  }
  @media (max-width:560px){
    .cat-hero h1{font-size:29px;}
    .cat-hero p.lead{font-size:15px;}
  }

  /* ---------- 宽卡列表（1 列，左图右文） ---------- */
  .wide-list{display:grid;grid-template-columns:1fr;gap:22px;margin-top:36px;}
  .wide-card{
    display:flex;gap:26px;align-items:flex-start;
    padding:22px;
    background:var(--card);
    border:1px solid var(--line);
    border-radius:var(--radius-big);
    box-shadow:var(--shadow-soft);
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .wide-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);border-color:#D5EDE7;}
  .wide-thumb{
    flex:none;
    width:220px;height:150px;
    border-radius:18px;
    overflow:hidden;
    border:1px solid var(--line);
    background:var(--brand-soft);
  }
  .wide-thumb img{
    width:100%;height:100%;object-fit:cover;
    transition:transform .35s ease;
  }
  .wide-card:hover .wide-thumb img{transform:scale(1.03);}
  .wide-body{flex:1;min-width:0;}
  .tag{
    display:inline-flex;align-items:center;
    padding:5px 13px;border-radius:999px;
    background:var(--brand-soft);
    color:var(--brand-deep);
    font-size:12.5px;font-weight:600;
    letter-spacing:.2px;
  }
  .wide-body h3{margin-top:12px;font-size:20px;line-height:1.4;font-weight:600;}
  .wide-card:hover .wide-body h3{color:var(--brand-deep);}
  .wide-body p{margin-top:10px;font-size:15px;line-height:1.9;color:#4C5C59;}
  .mini-list{margin-top:14px;display:flex;flex-wrap:wrap;gap:8px 18px;}
  .mini-list li{
    position:relative;
    padding-left:16px;
    font-size:13.5px;color:#5C6B68;
  }
  .mini-list li::before{
    content:"";
    position:absolute;left:0;top:9px;
    width:7px;height:7px;border-radius:999px;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);
  }
  .wide-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:18px;}
  .btn-sm{
    display:inline-flex;align-items:center;gap:7px;
    padding:10px 20px;border-radius:999px;
    font-size:14px;font-weight:600;
    transition:transform .22s ease,box-shadow .22s ease,background .22s ease,border-color .22s ease;
  }
  .btn-sm.solid{
    color:#fff;
    background:linear-gradient(135deg,#0F9D8C,#37C6A8);
    box-shadow:0 8px 20px rgba(15,157,140,.24);
  }
  .btn-sm.solid:hover{transform:translateY(-2px);box-shadow:0 14px 28px rgba(15,157,140,.30);}
  .btn-sm.line{
    color:var(--brand-deep);
    border:1.5px solid rgba(15,157,140,.40);
    background:#fff;
  }
  .btn-sm.line:hover{transform:translateY(-2px);background:var(--brand-soft);border-color:var(--brand);}

  .load-more-wrap{display:flex;justify-content:center;margin-top:38px;}
  .load-more{
    display:inline-flex;align-items:center;gap:8px;
    padding:13px 32px;border-radius:999px;
    font-size:15px;font-weight:600;color:var(--brand-deep);
    background:#fff;border:1.5px solid rgba(15,157,140,.38);
    transition:transform .22s ease,box-shadow .22s ease,background .22s ease;
  }
  .load-more:hover{transform:translateY(-3px);background:var(--brand-soft);box-shadow:var(--shadow-soft);}

  @media (max-width:768px){
    .wide-card{flex-direction:column;gap:18px;}
    .wide-thumb{width:100%;height:190px;}
  }

  /* ---------- 安装流程 ---------- */
  .steps-wrap{
    background:#fff;
    border-top:1px solid var(--line);
    border-bottom:1px solid var(--line);
  }
  .steps-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:24px;
    margin-top:40px;
  }
  .step-card{
    position:relative;
    padding:26px 22px;
    border-radius:var(--radius-card);
    background:linear-gradient(180deg,#FFFFFF 0%,#FBFDFC 100%);
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .step-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
  .step-num{
    display:inline-grid;place-items:center;
    width:42px;height:42px;border-radius:14px;
    font-weight:700;font-size:16px;color:#fff;
    background-image:linear-gradient(135deg,#0F9D8C,#37C6A8);
    font-variant-numeric:tabular-nums;
  }
  .step-card h3{margin-top:16px;font-size:17px;font-weight:600;}
  .step-card p{margin-top:10px;font-size:14px;line-height:1.85;color:#5C6B68;}
  @media (max-width:1024px){ .steps-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (max-width:560px){ .steps-grid{grid-template-columns:1fr;} }

  /* ---------- 常见提示处理 ---------- */
  .tips-wrap{
    display:grid;
    grid-template-columns:minmax(0,420px) minmax(0,1fr);
    gap:48px;
    align-items:start;
  }
  .tips-media{
    margin-top:28px;
    border-radius:var(--radius-big);
    overflow:hidden;
    border:1px solid var(--line);
    box-shadow:var(--shadow-soft);
  }
  .tips-media img{width:100%;height:260px;object-fit:cover;}
  .tips-list{display:grid;gap:14px;}
  .tip-item{
    display:flex;gap:16px;
    padding:18px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
  }
  .tip-item:hover{transform:translateY(-2px);box-shadow:var(--shadow-soft);border-color:#D5EDE7;}
  .tip-icon{
    flex:none;width:38px;height:38px;border-radius:12px;
    display:grid;place-items:center;
    background:var(--brand-soft);
  }
  .tip-item h3{font-size:16px;font-weight:600;}
  .tip-item p{margin-top:6px;font-size:14px;line-height:1.85;color:#5C6B68;}
  @media (max-width:1024px){
    .tips-wrap{grid-template-columns:1fr;gap:32px;}
    .tips-media img{height:200px;}
  }

  /* ---------- 系统要求 ---------- */
  .req-grid{
    display:grid;
    grid-template-columns:repeat(4,minmax(0,1fr));
    gap:22px;
    margin-top:38px;
  }
  .req-card{
    padding:24px 22px;
    background:#fff;
    border:1px solid var(--line);
    border-radius:var(--radius-card);
    box-shadow:var(--shadow-soft);
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .req-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-hover);}
  .req-head{display:flex;align-items:center;gap:10px;font-size:14px;color:#5C6B68;}
  .req-val{margin-top:14px;font-size:17px;font-weight:600;line-height:1.6;font-variant-numeric:tabular-nums;}
  .req-note{margin-top:8px;font-size:13px;color:#7C8A87;line-height:1.8;}
  @media (max-width:1024px){ .req-grid{grid-template-columns:repeat(2,minmax(0,1fr));} }
  @media (max-width:520px){ .req-grid{grid-template-columns:1fr;} }

  /* ---------- FAQ ---------- */
  .faq-list{display:grid;gap:14px;margin-top:36px;max-width:920px;}
  .faq-item{
    background:#fff;
    border:1px solid var(--line);
    border-radius:18px;
    overflow:hidden;
    transition:border-color .22s ease,box-shadow .22s ease;
  }
  .faq-item.open{border-color:rgba(15,157,140,.45);box-shadow:var(--shadow-soft);}
  .faq-q{
    width:100%;
    display:flex;align-items:center;gap:14px;
    padding:18px 22px;
    text-align:left;
    font-size:16px;font-weight:600;color:var(--ink);
  }
  .faq-q .idx{
    flex:none;width:30px;height:30px;border-radius:999px;
    display:grid;place-items:center;
    font-size:13px;font-weight:700;color:var(--brand-deep);
    background:var(--brand-soft);
    font-variant-numeric:tabular-nums;
  }
  .faq-q .sign{
    margin-left:auto;flex:none;
    width:26px;height:26px;border-radius:999px;
    display:grid;place-items:center;
    border:1.5px solid rgba(15,157,140,.35);
    color:var(--brand-deep);
    transition:transform .25s ease,background .25s ease;
  }
  .faq-item.open .faq-q .sign{transform:rotate(135deg);background:var(--brand-soft);}
  .faq-a{
    display:grid;grid-template-rows:0fr;
    transition:grid-template-rows .28s ease;
  }
  .faq-item.open .faq-a{grid-template-rows:1fr;}
  .faq-a > div{overflow:hidden;}
  .faq-a p{
    padding:0 22px 20px 66px;
    font-size:15px;line-height:1.85;color:#4C5C59;
  }
  @media (max-width:560px){
    .faq-a p{padding:0 20px 18px 20px;}
    .faq-q{padding:16px 18px;font-size:15px;}
  }

  /* ---------- CTA ---------- */
  .cta-band{
    position:relative;
    overflow:hidden;
    border-radius:var(--radius-big);
    padding:56px 48px;
    background-image:linear-gradient(135deg,#0F9D8C 0%,#37C6A8 58%,#FFB36B 100%);
    box-shadow:0 24px 50px rgba(15,157,140,.22);
    color:#fff;
  }
  .cta-band::after{
    content:"";
    position:absolute;right:-80px;top:-80px;
    width:320px;height:320px;border-radius:50%;
    background:rgba(255,255,255,.12);
  }
  .cta-band h2{font-size:28px;line-height:1.35;font-weight:700;position:relative;z-index:1;}
  .cta-band p{margin-top:14px;font-size:15.5px;line-height:1.9;color:rgba(255,255,255,.92);max-width:640px;position:relative;z-index:1;}
  .cta-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:28px;position:relative;z-index:1;}
  .cta-white{
    display:inline-flex;align-items:center;gap:8px;
    padding:13px 28px;border-radius:999px;
    background:#fff;color:var(--brand-deep);
    font-size:15px;font-weight:600;
    transition:transform .22s ease,box-shadow .22s ease;
  }
  .cta-white:hover{transform:translateY(-3px);box-shadow:0 16px 32px rgba(11,122,110,.28);}
  .cta-line{
    display:inline-flex;align-items:center;gap:8px;
    padding:12px 26px;border-radius:999px;
    border:1.5px solid rgba(255,255,255,.75);
    color:#fff;font-size:15px;font-weight:600;
    transition:background .22s ease,transform .22s ease;
  }
  .cta-line:hover{background:rgba(255,255,255,.16);transform:translateY(-3px);}
  @media (max-width:768px){
    .cta-band{padding:36px 24px;}
    .cta-band h2{font-size:22px;}
  }

  /* ---------- 页脚 ---------- */
  .site-footer{background:var(--ink);color:#fff;}
  .footer-title{color:#7FD8C6;font-size:14px;font-weight:600;letter-spacing:.4px;}
  .footer-link{
    color:#9FB0AD;font-size:14px;
    transition:color .2s ease,text-underline-offset .2s ease;
  }
  .footer-link:hover{
    color:var(--brand-soft);
    text-decoration:underline;
    text-underline-offset:4px;
  }