/* roulang page: index */
:root{
    --primary:#0e9b7c;
    --primary-600:#0b7e66;
    --primary-50:#edfaf6;
    --accent:#f59e0b;
    --dark:#0f172a;
    --muted:#64748b;
    --soft:#f6f8fa;
    --border:#e2e8f0;
    --radius:1rem;
    --shadow:0 10px 30px rgba(15,23,42,0.08);
    --shadow-lg:0 20px 40px rgba(15,23,42,0.12);
  }

  *{
    box-sizing:border-box;
  }
  html{
    scroll-behavior:smooth;
  }
  body{
    font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
    color:#0f172a;
    background:#ffffff;
    line-height:1.7;
    -webkit-font-smoothing:antialiased;
  }
  img{
    max-width:100%;
    height:auto;
    display:block;
  }
  a{
    color:inherit;
    text-decoration:none;
  }
  button{
    cursor:pointer;
  }
  .container{
    max-width:1200px;
    margin:0 auto;
    padding:0 1.5rem;
  }
  .section{
    padding:5.5rem 0;
  }
  .section-head{
    max-width:760px;
    margin-bottom:3rem;
  }
  .section-eyebrow{
    display:inline-block;
    padding:0.3rem 0.85rem;
    border-radius:999px;
    background:var(--primary-50);
    color:var(--primary-600);
    font-weight:600;
    font-size:0.8rem;
    letter-spacing:0.05em;
    text-transform:uppercase;
    margin-bottom:1rem;
  }
  .section-title{
    font-size:2.25rem;
    line-height:1.25;
    font-weight:700;
    letter-spacing:-0.02em;
    color:var(--dark);
    margin-bottom:1rem;
  }
  .section-subtitle{
    font-size:1.125rem;
    color:var(--muted);
  }

  /* Header */
  .header{
    position:sticky;
    top:0;
    z-index:50;
    background:rgba(255,255,255,0.92);
    backdrop-filter:blur(12px);
    border-bottom:1px solid var(--border);
    transition:box-shadow 0.3s ease;
  }
  .header.is-scrolled{
    box-shadow:0 4px 20px rgba(15,23,42,0.06);
  }
  .nav-wrap{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:1.5rem;
    height:76px;
  }
  .logo{
    display:flex;
    align-items:center;
    gap:0.65rem;
    font-size:1.35rem;
    font-weight:800;
    letter-spacing:-0.02em;
    color:var(--dark);
    white-space:nowrap;
  }
  .logo-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:42px;
    height:42px;
    border-radius:12px;
    background:linear-gradient(135deg,#0e9b7c,#0b6b5c);
    color:#fff;
    font-size:1.3rem;
    font-weight:900;
    box-shadow:0 6px 18px rgba(14,155,124,0.3);
  }
  .nav-links{
    display:flex;
    align-items:center;
    gap:0.25rem;
  }
  .nav-link{
    display:inline-flex;
    align-items:center;
    gap:0.35rem;
    padding:0.6rem 1rem;
    border-radius:999px;
    font-weight:500;
    color:#334155;
    font-size:0.95rem;
    transition:all 0.2s ease;
    border:1px solid transparent;
  }
  .nav-link:hover{
    color:var(--primary-600);
    background:var(--primary-50);
  }
  .nav-link.active{
    color:var(--primary-600);
    background:var(--primary-50);
    border-color:rgba(14,155,124,0.15);
    font-weight:600;
  }
  .nav-actions{
    display:flex;
    align-items:center;
    gap:0.75rem;
  }
  .search-box{
    display:flex;
    align-items:center;
    background:#f1f5f9;
    border:1px solid var(--border);
    border-radius:999px;
    padding:0.35rem 0.35rem 0.35rem 1rem;
    transition:border-color 0.2s, box-shadow 0.2s;
  }
  .search-box:focus-within{
    border-color:var(--primary);
    box-shadow:0 0 0 4px rgba(14,155,124,0.12);
    background:#fff;
  }
  .search-box input{
    border:none;
    background:transparent;
    outline:none;
    font-size:0.9rem;
    width:160px;
    color:var(--dark);
  }
  .search-box button{
    background:var(--primary);
    color:#fff;
    border:none;
    border-radius:999px;
    width:34px;
    height:34px;
    display:inline-flex;
    align-items:center;
    justify-content:center;
    transition:background 0.2s;
  }
  .search-box button:hover{
    background:var(--primary-600);
  }
  .btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    gap:0.5rem;
    padding:0.75rem 1.5rem;
    border-radius:999px;
    font-weight:600;
    font-size:0.95rem;
    border:1px solid transparent;
    transition:all 0.25s ease;
  }
  .btn-primary{
    background:var(--primary);
    color:#fff;
    box-shadow:0 8px 24px rgba(14,155,124,0.25);
  }
  .btn-primary:hover{
    background:var(--primary-600);
    transform:translateY(-2px);
    box-shadow:0 12px 30px rgba(14,155,124,0.3);
  }
  .btn-outline{
    border-color:var(--border);
    color:var(--dark);
    background:rgba(255,255,255,0.8);
  }
  .btn-outline:hover{
    border-color:var(--primary);
    color:var(--primary-600);
    background:var(--primary-50);
  }
  .btn-light{
    background:#fff;
    color:var(--primary-600);
    box-shadow:0 8px 24px rgba(15,23,42,0.12);
  }
  .btn-light:hover{
    background:var(--primary-50);
    transform:translateY(-2px);
  }

  /* Mobile nav */
  .mobile-toggle{
    display:none;
    background:transparent;
    border:1px solid var(--border);
    border-radius:10px;
    width:42px;
    height:42px;
    align-items:center;
    justify-content:center;
    color:var(--dark);
  }
  .mobile-nav{
    display:none;
    background:#fff;
    border-top:1px solid var(--border);
    padding:1rem 1.5rem 1.5rem;
  }
  .mobile-nav.open{
    display:block;
  }
  .mobile-nav .nav-link{
    display:block;
    padding:0.8rem 1rem;
    border-radius:12px;
    margin-bottom:0.25rem;
  }

  /* Hero */
  .hero{
    position:relative;
    background:url('/assets/images/backpic/back-1.png') center center / cover no-repeat;
    color:#fff;
    padding:7rem 0 6rem;
  }
  .hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:linear-gradient(100deg,rgba(6,43,36,0.86) 0%,rgba(10,54,46,0.78) 40%,rgba(10,54,46,0.35) 100%);
  }
  .hero-content{
    position:relative;
    z-index:2;
    max-width:860px;
  }
  .hero-badge{
    display:inline-flex;
    align-items:center;
    gap:0.5rem;
    padding:0.45rem 1rem;
    background:rgba(255,255,255,0.14);
    backdrop-filter:blur(8px);
    border:1px solid rgba(255,255,255,0.25);
    border-radius:999px;
    font-size:0.85rem;
    font-weight:500;
    margin-bottom:1.5rem;
  }
  .hero-title{
    font-size:3.25rem;
    line-height:1.2;
    font-weight:800;
    letter-spacing:-0.03em;
    margin-bottom:1.25rem;
  }
  .hero-title span{
    color:#6ee7b7;
  }
  .hero-subtitle{
    font-size:1.25rem;
    line-height:1.75;
    color:rgba(255,255,255,0.9);
    max-width:680px;
    margin-bottom:2rem;
  }
  .hero-actions{
    display:flex;
    flex-wrap:wrap;
    gap:1rem;
    margin-bottom:3rem;
  }
  .hero-stats{
    display:flex;
    flex-wrap:wrap;
    gap:2.5rem;
    padding-top:2rem;
    border-top:1px solid rgba(255,255,255,0.2);
  }
  .hero-stat .num{
    font-size:2rem;
    font-weight:800;
    color:#fff;
  }
  .hero-stat .label{
    font-size:0.9rem;
    color:rgba(255,255,255,0.75);
  }

  /* Cards */
  .card{
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    box-shadow:var(--shadow);
    transition:transform 0.25s ease, box-shadow 0.25s ease;
  }
  .card:hover{
    transform:translateY(-4px);
    box-shadow:var(--shadow-lg);
  }
  .card-body{
    padding:1.75rem;
  }
  .badge{
    display:inline-flex;
    align-items:center;
    gap:0.25rem;
    padding:0.25rem 0.75rem;
    border-radius:999px;
    font-size:0.78rem;
    font-weight:600;
    background:var(--primary-50);
    color:var(--primary-600);
  }
  .badge-outline{
    background:transparent;
    border:1px solid var(--border);
    color:var(--muted);
  }

  /* Content list */
  .content-list{
    display:flex;
    flex-direction:column;
    gap:1rem;
  }
  .content-row{
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:1.5rem;
    padding:1.25rem 1.5rem;
    background:#fff;
    border:1px solid var(--border);
    border-radius:1rem;
    transition:all 0.25s ease;
  }
  .content-row:hover{
    border-color:rgba(14,155,124,0.4);
    box-shadow:var(--shadow);
    transform:translateX(4px);
  }
  .content-title{
    font-weight:600;
    font-size:1.05rem;
    color:var(--dark);
    margin-bottom:0.3rem;
  }
  .content-meta{
    font-size:0.85rem;
    color:var(--muted);
  }

  /* Steps */
  .step-card{
    text-align:center;
    padding:2rem 1.25rem;
    border-radius:var(--radius);
    background:var(--soft);
    border:1px solid var(--border);
    position:relative;
    transition:all 0.3s ease;
  }
  .step-card:hover{
    background:#fff;
    box-shadow:var(--shadow);
    transform:translateY(-4px);
  }
  .step-num{
    width:52px;
    height:52px;
    margin:0 auto 1.25rem;
    display:flex;
    align-items:center;
    justify-content:center;
    font-size:1.25rem;
    font-weight:800;
    color:#fff;
    background:var(--primary);
    border-radius:16px;
    box-shadow:0 8px 20px rgba(14,155,124,0.3);
  }
  .step-card h3{
    font-size:1.1rem;
    font-weight:700;
    margin-bottom:0.5rem;
  }
  .step-card p{
    font-size:0.9rem;
    color:var(--muted);
  }

  /* Feature grid */
  .feature-card{
    background:#fff;
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:2rem;
    transition:all 0.3s ease;
  }
  .feature-card:hover{
    box-shadow:var(--shadow-lg);
    transform:translateY(-4px);
  }
  .feature-icon{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    width:54px;
    height:54px;
    border-radius:15px;
    background:var(--primary-50);
    color:var(--primary-600);
    font-size:1.5rem;
    margin-bottom:1.25rem;
  }

  /* FAQ */
  .faq-list details{
    background:#fff;
    border:1px solid var(--border);
    border-radius:1rem;
    margin-bottom:1rem;
    padding:1.25rem 1.5rem;
    transition:border-color 0.2s, box-shadow 0.2s;
  }
  .faq-list details:hover{
    border-color:rgba(14,155,124,0.3);
  }
  .faq-list summary{
    font-weight:600;
    cursor:pointer;
    list-style:none;
    display:flex;
    justify-content:space-between;
    align-items:center;
  }
  .faq-list summary::-webkit-details-marker{
    display:none;
  }
  .faq-list summary:after{
    content:"+";
    font-size:1.5rem;
    color:var(--primary);
    transition:transform 0.2s;
  }
  .faq-list details[open] summary:after{
    transform:rotate(45deg);
  }
  .faq-list details p{
    margin-top:0.75rem;
    color:var(--muted);
    line-height:1.75;
  }

  /* CTA */
  .cta-section{
    background:url('/assets/images/backpic/back-2.png') center center / cover no-repeat;
    position:relative;
    padding:5rem 0;
  }
  .cta-section::before{
    content:"";
    position:absolute;
    inset:0;
    background:rgba(11,107,92,0.9);
  }
  .cta-content{
    position:relative;
    z-index:2;
  }

  /* Footer */
  .footer{
    background:#0f172a;
    color:#94a3b8;
    padding:4rem 0 2rem;
  }
  .footer-brand{
    font-size:1.3rem;
    font-weight:800;
    color:#fff;
    display:flex;
    align-items:center;
    gap:0.6rem;
    margin-bottom:1rem;
  }
  .footer a{
    color:#94a3b8;
    transition:color 0.2s;
  }
  .footer a:hover{
    color:#6ee7b7;
  }
  .footer-title{
    font-size:1rem;
    font-weight:700;
    color:#fff;
    margin-bottom:1rem;
  }
  .footer-links li{
    margin-bottom:0.55rem;
  }
  .footer-bottom{
    border-top:1px solid rgba(255,255,255,0.1);
    margin-top:3rem;
    padding-top:1.5rem;
    display:flex;
    justify-content:space-between;
    align-items:center;
    flex-wrap:wrap;
    gap:1rem;
  }

  @media (max-width:1024px){
    .nav-links{
      display:none;
    }
    .search-box input{
      width:120px;
    }
    .mobile-toggle{
      display:inline-flex;
    }
    .mobile-nav{
      display:none;
    }
    .mobile-nav.open{
      display:block;
    }
    .section-title{
      font-size:2rem;
    }
    .hero-title{
      font-size:2.75rem;
    }
  }
  @media (max-width:768px){
    .section{
      padding:3.5rem 0;
    }
    .container{
      padding:0 1.25rem;
    }
    .nav-wrap{
      height:66px;
    }
    .search-box{
      display:none;
    }
    .hero{
      padding:4.5rem 0;
    }
    .hero-title{
      font-size:2.25rem;
    }
    .hero-subtitle{
      font-size:1.05rem;
    }
    .hero-actions{
      flex-direction:column;
      align-items:stretch;
    }
    .hero-actions .btn{
      width:100%;
    }
    .hero-stats{
      flex-direction:column;
      gap:1rem;
    }
    .section-title{
      font-size:1.75rem;
    }
    .section-subtitle{
      font-size:1rem;
    }
    .content-row{
      flex-direction:column;
      align-items:flex-start;
      gap:0.5rem;
    }
  }
  @media (max-width:520px){
    .container{
      padding:0 1rem;
    }
    .logo span{
      font-size:1rem;
    }
    .logo-icon{
      width:36px;
      height:36px;
      font-size:1.1rem;
    }
    .section-title{
      font-size:1.5rem;
    }
    .btn{
      width:100%;
      justify-content:center;
    }
    .cta-section{
      padding:3.5rem 0;
    }
    .footer-bottom{
      flex-direction:column;
      text-align:center;
    }
  }

/* roulang page: category1 */
:root {
      --primary: #166534;
      --primary-light: #bbf7d0;
      --primary-dark: #14532d;
      --secondary: #0369a1;
      --accent: #f59e0b;
      --bg-soft: #f8fafc;
      --text-main: #0f172a;
      --text-muted: #475569;
      --border-soft: #e2e8f0;
      --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
      --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.1);
      --radius-sm: 8px;
      --radius-md: 16px;
      --radius-lg: 24px;
    }

    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", sans-serif;
      color: var(--text-main);
      background-color: #ffffff;
      line-height: 1.6;
      -webkit-font-smoothing: antialiased;
    }

    a {
      text-decoration: none;
      color: inherit;
      transition: all 0.3s ease;
    }

    img {
      max-width: 100%;
      display: block;
    }

    button {
      cursor: pointer;
      border: none;
      background: none;
      font-family: inherit;
    }

    .container {
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 24px;
    }

    .btn-primary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: var(--primary);
      color: #ffffff;
      font-weight: 600;
      font-size: 14px;
      padding: 12px 28px;
      border-radius: 50px;
      border: 2px solid transparent;
      transition: all 0.3s ease;
      box-shadow: 0 4px 12px rgba(22, 101, 52, 0.25);
    }

    .btn-primary:hover {
      background: var(--primary-dark);
      transform: translateY(-2px);
      box-shadow: 0 8px 20px rgba(22, 101, 52, 0.3);
    }

    .btn-primary:focus-visible {
      outline: 3px solid var(--primary-light);
      outline-offset: 2px;
    }

    .btn-outline {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      background: transparent;
      color: var(--primary);
      font-weight: 600;
      font-size: 14px;
      padding: 12px 28px;
      border-radius: 50px;
      border: 2px solid var(--primary);
      transition: all 0.3s ease;
    }

    .btn-outline:hover {
      background: rgba(22, 101, 52, 0.08);
      transform: translateY(-2px);
    }

    .btn-outline:focus-visible {
      outline: 3px solid var(--primary-light);
      outline-offset: 2px;
    }

    /* Header */
    .header {
      position: sticky;
      top: 0;
      z-index: 100;
      background: rgba(255, 255, 255, 0.98);
      backdrop-filter: blur(10px);
      border-bottom: 1px solid var(--border-soft);
      box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
    }

    .header-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 76px;
    }

    .logo {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-shrink: 0;
    }

    .logo-icon {
      width: 42px;
      height: 42px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: #fff;
      font-size: 20px;
      font-weight: 700;
      box-shadow: 0 4px 10px rgba(22, 101, 52, 0.3);
    }

    .logo-text {
      font-size: 20px;
      font-weight: 700;
      color: var(--text-main);
      letter-spacing: 0.5px;
    }

    .nav-links {
      display: flex;
      align-items: center;
      gap: 32px;
      margin-left: 40px;
    }

    .nav-link {
      font-size: 15px;
      font-weight: 500;
      color: var(--text-muted);
      padding: 8px 4px;
      position: relative;
      transition: color 0.3s ease;
    }

    .nav-link::after {
      content: '';
      position: absolute;
      bottom: 0;
      left: 0;
      width: 0;
      height: 2px;
      background: var(--primary);
      border-radius: 2px;
      transition: width 0.3s ease;
    }

    .nav-link:hover {
      color: var(--primary);
    }

    .nav-link:hover::after {
      width: 100%;
    }

    .nav-link.active {
      color: var(--primary);
      font-weight: 600;
    }

    .nav-link.active::after {
      width: 100%;
    }

    .header-actions {
      display: flex;
      align-items: center;
      gap: 16px;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: var(--bg-soft);
      border: 1px solid var(--border-soft);
      border-radius: 50px;
      padding: 6px 8px 6px 16px;
      width: 220px;
      transition: all 0.3s ease;
    }

    .search-box:focus-within {
      border-color: var(--primary);
      box-shadow: 0 0 0 3px rgba(22, 101, 52, 0.1);
      background: #fff;
    }

    .search-box input {
      border: none;
      outline: none;
      background: transparent;
      font-size: 14px;
      color: var(--text-main);
      width: 100%;
      font-family: inherit;
    }

    .search-box button {
      padding: 6px 10px;
      border-radius: 50%;
      color: var(--text-muted);
      transition: all 0.3s ease;
    }

    .search-box button:hover {
      background: rgba(22, 101, 52, 0.1);
      color: var(--primary);
    }

    .menu-toggle {
      display: none;
      font-size: 24px;
      color: var(--text-main);
      padding: 8px;
      border-radius: 8px;
    }

    .mobile-menu {
      display: none;
      background: #fff;
      border-top: 1px solid var(--border-soft);
      padding: 16px 24px;
      box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
    }

    .mobile-menu.open {
      display: block;
    }

    .mobile-nav-links {
      display: flex;
      flex-direction: column;
      gap: 4px;
    }

    .mobile-nav-links .nav-link {
      padding: 12px 8px;
      border-radius: 8px;
    }

    .mobile-nav-links .nav-link:hover {
      background: var(--bg-soft);
    }

    .mobile-nav-links .nav-link.active {
      background: rgba(22, 101, 52, 0.08);
    }

    /* Hero */
    .page-hero {
      position: relative;
      background-image: url('/assets/images/backpic/back-2.png');
      background-size: cover;
      background-position: center;
      padding: 80px 0 72px;
    }

    .page-hero::before {
      content: '';
      position: absolute;
      inset: 0;
      background: linear-gradient(90deg, rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.6), rgba(15, 23, 42, 0.4));
    }

    .page-hero .container {
      position: relative;
      z-index: 2;
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 8px;
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.25);
      backdrop-filter: blur(8px);
      padding: 6px 16px;
      border-radius: 50px;
      font-size: 13px;
      color: #e2e8f0;
      margin-bottom: 20px;
    }

    .hero-title {
      font-size: 42px;
      font-weight: 700;
      color: #fff;
      line-height: 1.2;
      margin-bottom: 16px;
      letter-spacing: 1px;
    }

    .hero-description {
      font-size: 16px;
      color: rgba(226, 232, 240, 0.9);
      max-width: 620px;
      margin-bottom: 32px;
      line-height: 1.7;
    }

    .hero-actions {
      display: flex;
      gap: 16px;
      flex-wrap: wrap;
    }

    .hero-actions .btn-primary {
      background: #fff;
      color: var(--primary-dark);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }

    .hero-actions .btn-primary:hover {
      background: var(--primary-light);
      transform: translateY(-2px);
    }

    .hero-actions .btn-outline {
      border-color: rgba(255, 255, 255, 0.7);
      color: #fff;
    }

    .hero-actions .btn-outline:hover {
      background: rgba(255, 255, 255, 0.1);
      border-color: #fff;
    }

    /* Section */
    .section {
      padding: 80px 0;
    }

    .section.bg-soft {
      background: var(--bg-soft);
    }

    .section-head {
      text-align: center;
      max-width: 700px;
      margin: 0 auto 48px;
    }

    .section-tag {
      display: inline-block;
      font-size: 13px;
      font-weight: 600;
      color: var(--primary);
      background: rgba(22, 101, 52, 0.08);
      padding: 4px 16px;
      border-radius: 50px;
      margin-bottom: 12px;
      letter-spacing: 1px;
      text-transform: uppercase;
    }

    .section-head h2 {
      font-size: 32px;
      font-weight: 700;
      color: var(--text-main);
      margin-bottom: 12px;
      line-height: 1.3;
    }

    .section-head p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Steps */
    .steps-grid {
      display: grid;
      grid-template-columns: repeat(4, 1fr);
      gap: 24px;
    }

    .step-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 32px 24px;
      border: 1px solid var(--border-soft);
      box-shadow: var(--shadow-sm);
      transition: all 0.3s ease;
      position: relative;
    }

    .step-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
      border-color: var(--primary-light);
    }

    .step-number {
      width: 44px;
      height: 44px;
      background: linear-gradient(135deg, var(--primary), var(--primary-dark));
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 18px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 16px;
      box-shadow: 0 4px 10px rgba(22, 101, 52, 0.25);
    }

    .step-card h3 {
      font-size: 17px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .step-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Login Methods */
    .methods-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .method-card {
      background: #fff;
      border-radius: var(--radius-md);
      overflow: hidden;
      border: 1px solid var(--border-soft);
      transition: all 0.3s ease;
    }

    .method-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .method-card .card-img {
      height: 180px;
      overflow: hidden;
    }

    .method-card .card-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.5s ease;
    }

    .method-card:hover .card-img img {
      transform: scale(1.03);
    }

    .method-body {
      padding: 24px;
    }

    .method-body .badge {
      display: inline-block;
      background: rgba(22, 101, 52, 0.1);
      color: var(--primary);
      font-size: 12px;
      font-weight: 600;
      padding: 4px 12px;
      border-radius: 50px;
      margin-bottom: 10px;
    }

    .method-body h3 {
      font-size: 18px;
      font-weight: 600;
      margin-bottom: 8px;
    }

    .method-body p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* Troubleshoot */
    .troubleshoot-list {
      display: grid;
      grid-template-columns: repeat(2, 1fr);
      gap: 20px;
    }

    .trouble-item {
      display: flex;
      gap: 16px;
      background: #fff;
      padding: 24px;
      border-radius: var(--radius-md);
      border: 1px solid var(--border-soft);
      transition: all 0.3s ease;
    }

    .trouble-item:hover {
      box-shadow: var(--shadow-sm);
      border-color: var(--primary-light);
    }

    .trouble-icon {
      width: 44px;
      height: 44px;
      border-radius: 12px;
      background: rgba(22, 101, 52, 0.08);
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--primary);
      font-size: 18px;
      flex-shrink: 0;
    }

    .trouble-content h4 {
      font-size: 15px;
      font-weight: 600;
      margin-bottom: 6px;
    }

    .trouble-content p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.6;
    }

    /* Security */
    .security-grid {
      display: grid;
      grid-template-columns: repeat(3, 1fr);
      gap: 24px;
    }

    .security-card {
      background: #fff;
      border-radius: var(--radius-md);
      padding: 32px 26px;
      border: 1px solid var(--border-soft);
      transition: all 0.3s ease;
      text-align: center;
    }

    .security-card:hover {
      box-shadow: var(--shadow-md);
      transform: translateY(-4px);
    }

    .security-icon {
      width: 56px;
      height: 56px;
      background: linear-gradient(135deg, rgba(22, 101, 52, 0.1), rgba(22, 101, 52, 0.05));
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 24px;
      color: var(--primary);
      margin: 0 auto 16px;
    }

    .security-card h3 {
      font-size: 16px;
      font-weight: 600;
      margin-bottom: 10px;
    }

    .security-card p {
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
    }

    /* FAQ */
    .faq-list {
      max-width: 800px;
      margin: 0 auto;
    }

    .faq-item {
      background: #fff;
      border: 1px solid var(--border-soft);
      border-radius: var(--radius-md);
      margin-bottom: 12px;
      overflow: hidden;
      transition: box-shadow 0.3s ease;
    }

    .faq-item:hover {
      box-shadow: var(--shadow-sm);
    }

    .faq-item summary {
      padding: 20px 24px;
      font-size: 15px;
      font-weight: 600;
      cursor: pointer;
      display: flex;
      justify-content: space-between;
      align-items: center;
      list-style: none;
      transition: background 0.3s ease;
    }

    .faq-item summary::-webkit-details-marker {
      display: none;
    }

    .faq-item summary:hover {
      background: rgba(22, 101, 52, 0.02);
    }

    .faq-item summary::after {
      content: '\f078';
      font-family: 'Font Awesome 6 Free';
      font-weight: 900;
      font-size: 12px;
      color: var(--text-muted);
      transition: transform 0.3s ease;
      flex-shrink: 0;
    }

    .faq-item[open] summary::after {
      transform: rotate(180deg);
    }

    .faq-item .faq-answer {
      padding: 0 24px 20px;
      font-size: 14px;
      color: var(--text-muted);
      line-height: 1.7;
      border-top: 1px solid var(--border-soft);
      padding-top: 16px;
    }

    /* CTA */
    .cta-section {
      background: linear-gradient(135deg, var(--primary-dark), var(--primary));
      border-radius: var(--radius-lg);
      padding: 56px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 40px;
      box-shadow: 0 16px 40px rgba(22, 101, 52, 0.25);
      position: relative;
      overflow: hidden;
    }

    .cta-section::after {
      content: '';
      position: absolute;
      right: -40px;
      top: -40px;
      width: 200px;
      height: 200px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.08);
    }

    .cta-content {
      position: relative;
      z-index: 2;
    }

    .cta-content h2 {
      font-size: 28px;
      font-weight: 700;
      color: #fff;
      margin-bottom: 12px;
    }

    .cta-content p {
      font-size: 15px;
      color: rgba(255, 255, 255, 0.9);
      line-height: 1.7;
      max-width: 480px;
    }

    .cta-actions {
      display: flex;
      gap: 14px;
      flex-shrink: 0;
      position: relative;
      z-index: 2;
    }

    .cta-actions .btn-primary {
      background: #fff;
      color: var(--primary-dark);
      box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    }

    .cta-actions .btn-primary:hover {
      background: var(--primary-light);
    }

    .cta-actions .btn-outline {
      border-color: rgba(255, 255, 255, 0.7);
      color: #fff;
    }

    .cta-actions .btn-outline:hover {
      background: rgba(255, 255, 255, 0.12);
    }

    /* Breadcrumb */
    .breadcrumb {
      padding: 16px 0;
      border-bottom: 1px solid var(--border-soft);
      background: #f8fafc;
    }

    .breadcrumb-inner {
      display: flex;
      align-items: center;
      gap: 8px;
      font-size: 14px;
      color: var(--text-muted);
    }

    .breadcrumb-inner a:hover {
      color: var(--primary);
    }

    .breadcrumb-inner .sep {
      color: #94a3b8;
      font-size: 12px;
    }

    .breadcrumb-inner .current {
      color: var(--primary);
      font-weight: 500;
    }

    /* Content feature */
    .feature-section {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 56px;
      align-items: center;
    }

    .feature-img {
      border-radius: var(--radius-lg);
      overflow: hidden;
      box-shadow: var(--shadow-lg);
    }

    .feature-img img {
      width: 100%;
      height: 100%;
      object-fit: cover;
    }

    .feature-content .section-tag {
      margin-bottom: 8px;
    }

    .feature-content h2 {
      font-size: 30px;
      font-weight: 700;
      line-height: 1.3;
      margin-bottom: 16px;
    }

    .feature-content p {
      font-size: 15px;
      color: var(--text-muted);
      line-height: 1.8;
      margin-bottom: 20px;
    }

    /* Footer */
    .footer {
      background: #0f172a;
      color: #94a3b8;
      padding: 60px 0 0;
      margin-top: 40px;
    }

    .footer-brand {
      display: flex;
      align-items: center;
      gap: 10px;
      font-size: 18px;
      font-weight: 600;
      color: #f1f5f9;
      margin-bottom: 12px;
    }

    .footer-brand .logo-icon {
      width: 36px;
      height: 36px;
      font-size: 16px;
    }

    .footer-title {
      font-size: 15px;
      font-weight: 600;
      color: #e2e8f0;
      margin-bottom: 16px;
    }

    .footer-links {
      list-style: none;
      display: flex;
      flex-direction: column;
      gap: 10px;
    }

    .footer-links a {
      font-size: 14px;
      color: #94a3b8;
      transition: all 0.3s ease;
    }

    .footer-links a:hover {
      color: #f1f5f9;
      padding-left: 4px;
    }

    .footer-bottom {
      border-top: 1px solid rgba(255, 255, 255, 0.1);
      padding: 20px 0;
      margin-top: 40px;
      display: flex;
      justify-content: space-between;
      gap: 16px;
      flex-wrap: wrap;
      font-size: 13px;
      color: #64748b;
    }

    /* Responsive */
    @media (max-width: 1024px) {
      .header-inner {
        height: 68px;
      }

      .nav-links {
        gap: 20px;
        margin-left: 20px;
      }

      .logo-text {
        font-size: 17px;
      }

      .search-box {
        width: 180px;
      }

      .steps-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .methods-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .security-grid {
        grid-template-columns: repeat(2, 1fr);
      }

      .cta-section {
        flex-direction: column;
        text-align: center;
        padding: 40px 32px;
      }

      .cta-content p {
        margin: 0 auto;
      }
    }

    @media (max-width: 768px) {
      .section {
        padding: 60px 0;
      }

      .container {
        padding: 0 20px;
      }

      .nav-links,
      .header-actions .search-box,
      .btn-header {
        display: none;
      }

      .menu-toggle {
        display: block;
        margin-left: auto;
      }

      .hero-title {
        font-size: 30px;
      }

      .hero-description {
        font-size: 15px;
      }

      .section-head h2 {
        font-size: 26px;
      }

      .troubleshoot-list {
        grid-template-columns: 1fr;
      }

      .feature-section {
        grid-template-columns: 1fr;
        gap: 32px;
      }

      .footer-bottom {
        flex-direction: column;
      }
    }

    @media (max-width: 520px) {
      .steps-grid {
        grid-template-columns: 1fr;
      }

      .methods-grid {
        grid-template-columns: 1fr;
      }

      .security-grid {
        grid-template-columns: 1fr;
      }

      .hero-title {
        font-size: 26px;
      }

      .page-hero {
        padding: 60px 0 52px;
      }

      .cta-section {
        padding: 32px 24px;
      }

      .cta-actions {
        flex-direction: column;
        width: 100%;
      }

      .cta-actions .btn-primary,
      .cta-actions .btn-outline {
        width: 100%;
      }

      .hero-actions {
        flex-direction: column;
        width: 100%;
      }

      .hero-actions .btn-primary,
      .hero-actions .btn-outline {
        width: 100%;
      }
    }

/* roulang page: article */
:root {
  --primary: #1e4d8c;
  --primary-dark: #173a6a;
  --primary-light: #3668b3;
  --accent: #f59e0b;
  --accent-dark: #c77d06;
  --text-main: #0f172a;
  --text-weak: #5f6b7e;
  --text-muted: #8a94a6;
  --bg-page: #f8fafc;
  --bg-soft: #f1f5f9;
  --bg-card: #ffffff;
  --border-light: #e6ebf2;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-card: 0 10px 30px rgba(15, 23, 42, 0.06);
  --shadow-hover: 0 18px 40px rgba(15, 23, 42, 0.12);
  --transition: all 0.25s ease;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-main);
  background: var(--bg-page);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; transition: var(--transition); }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input { outline: none; }
.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 导航 ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: #fff;
  border-radius: 12px;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 6px 16px rgba(30,77,140,0.3);
}
.logo-text {
  font-size: 19px;
  font-weight: 700;
  color: var(--primary-dark);
  letter-spacing: 0.5px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-main);
  position: relative;
  padding: 8px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: var(--transition);
  border-radius: 2px;
}
.nav-link:hover { color: var(--primary); }
.nav-link:hover::after { width: 100%; }
.nav-link.active { color: var(--primary); font-weight: 600; }
.nav-link.active::after { width: 100%; }
.header-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-left: auto;
}
.search-box {
  display: flex;
  align-items: center;
  background: var(--bg-soft);
  border: 1px solid transparent;
  border-radius: 999px;
  padding: 8px 16px;
  transition: var(--transition);
}
.search-box:focus-within {
  border-color: var(--primary-light);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(30,77,140,0.1);
}
.search-box input {
  border: none;
  background: transparent;
  font-size: 14px;
  width: 150px;
  color: var(--text-main);
}
.search-box svg { width: 16px; height: 16px; color: var(--text-muted); flex-shrink: 0; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 600;
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 14px;
  transition: var(--transition);
  border: 1px solid transparent;
}
.btn-sm { padding: 8px 16px; font-size: 14px; }
.btn-primary {
  background: var(--primary);
  color: #fff !important;
  box-shadow: 0 4px 14px rgba(30,77,140,0.25);
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(30,77,140,0.35);
}
.btn-accent { background: var(--accent); color: #1f2937; }
.btn-accent:hover { background: var(--accent-dark); color: #fff; }
.btn-outline { border-color: var(--border-light); color: var(--primary); background: #fff; }
.btn-outline:hover { border-color: var(--primary); background: var(--bg-soft); transform: translateY(-1px); }
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-light);
  border-radius: 10px;
  font-size: 18px;
  color: var(--text-main);
}
@media (max-width: 1024px) {
  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    align-items: flex-start;
    padding: 20px 24px;
    gap: 8px;
    border-bottom: 1px solid var(--border-light);
    transform: translateY(-120%);
    opacity: 0;
    transition: var(--transition);
    box-shadow: 0 20px 40px rgba(0,0,0,0.08);
    z-index: 99;
    pointer-events: none;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .nav-link { display: block; width: 100%; padding: 12px; font-size: 16px; }
  .header-actions .search-box { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 640px) {
  .logo-text { font-size: 16px; }
  .header-inner { height: 64px; }
  .nav-links { top: 64px; }
  .btn-sm { display: none; }
}

/* ===== 文章头部 ===== */
.article-hero {
  position: relative;
  padding: 56px 0 68px;
  background: linear-gradient(135deg, #102a4e 0%, #1e4d8c 100%);
  color: #fff;
  overflow: hidden;
}
.article-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url('/assets/images/backpic/back-2.png') center / cover no-repeat;
  opacity: 0.18;
}
.article-hero::after {
  content: '';
  position: absolute;
  right: -120px;
  bottom: -120px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245,158,11,0.32), transparent 62%);
}
.article-hero .container { position: relative; z-index: 2; }
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 14px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 28px;
}
.breadcrumb a { color: rgba(255,255,255,0.7); }
.breadcrumb a:hover { color: #fff; }
.breadcrumb .current { color: rgba(255,255,255,0.92); }
.article-hero h1 {
  font-size: 36px;
  font-weight: 800;
  line-height: 1.35;
  margin: 16px 0 16px;
  letter-spacing: 0.5px;
}
.article-summary {
  font-size: 16px;
  line-height: 1.8;
  color: rgba(255,255,255,0.85);
  max-width: 780px;
  margin-bottom: 24px;
}
.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  font-size: 14px;
  color: rgba(255,255,255,0.8);
}
.meta-item { display: inline-flex; align-items: center; gap: 7px; }
.meta-item i { color: var(--accent); }
@media (max-width: 768px) {
  .article-hero { padding: 40px 0 48px; }
  .article-hero h1 { font-size: 28px; }
  .article-summary { font-size: 15px; }
}

/* ===== 徽章 ===== */
.badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(30,77,140,0.1);
  color: var(--primary);
  letter-spacing: 0.5px;
}
.badge-accent {
  background: var(--accent);
  color: #1f2937;
  font-size: 13px;
  padding: 6px 16px;
  box-shadow: 0 4px 12px rgba(245,158,11,0.25);
}
.badge-soft {
  background: rgba(245,158,11,0.12);
  color: #b45309;
  font-size: 12px;
}

/* ===== 文章主体 ===== */
.article-main { padding: 64px 0; }
.article-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  box-shadow: var(--shadow-card);
  padding: 48px;
}
.article-body { font-size: 16px; line-height: 1.9; color: #334155; }
.article-body h2 {
  font-size: 24px;
  font-weight: 700;
  margin: 40px 0 16px;
  color: var(--text-main);
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}
.article-body h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 32px 0 12px;
  color: var(--text-main);
}
.article-body h4 { font-size: 17px; font-weight: 600; margin: 24px 0 10px; color: var(--primary-dark); }
.article-body p { margin-bottom: 18px; }
.article-body ul { margin: 0 0 20px; padding-left: 24px; list-style: disc; }
.article-body ol { margin: 0 0 20px; padding-left: 24px; list-style: decimal; }
.article-body li { margin-bottom: 8px; }
.article-body a { color: var(--primary); border-bottom: 1px solid rgba(30,77,140,0.3); }
.article-body a:hover { color: var(--primary-dark); border-color: var(--primary); }
.article-body blockquote {
  margin: 28px 0;
  padding: 20px 24px;
  background: #f8fafc;
  border-left: 4px solid var(--accent);
  border-radius: 0 12px 12px 0;
  color: #475569;
  font-style: italic;
}
.article-body img { border-radius: 16px; margin: 28px 0; }
.article-body table { width: 100%; border-collapse: collapse; margin: 24px 0; }
.article-body th, .article-body td { border: 1px solid var(--border-light); padding: 12px 14px; text-align: left; }
.article-body th { background: #f8fafc; font-weight: 600; color: var(--text-main); }
.article-body code { background: #f1f5f9; border-radius: 6px; padding: 2px 8px; font-size: 0.9em; color: #c026d3; }
.article-body pre { background: #0f172a; color: #e2e8f0; border-radius: 12px; padding: 20px 24px; margin: 24px 0; overflow-x: auto; }
.article-body pre code { background: transparent; color: inherit; padding: 0; }
.share-box {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px dashed var(--border-light);
  padding-top: 24px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.share-label { font-size: 14px; font-weight: 600; color: var(--text-weak); }
.share-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 10px;
  background: var(--bg-soft);
  color: var(--text-weak);
  font-size: 15px;
  transition: var(--transition);
}
.share-btn:hover { background: var(--primary); color: #fff; transform: translateY(-2px); }
@media (max-width: 768px) {
  .article-main { padding: 40px 0; }
  .article-card { padding: 28px 22px; }
  .article-body { font-size: 15px; }
  .article-body h2 { font-size: 21px; }
}

/* ===== 内容未找到 ===== */
.not-found {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 72px 32px;
  text-align: center;
  box-shadow: var(--shadow-card);
}
.not-found i { font-size: 48px; color: var(--accent); margin-bottom: 20px; display: block; }
.not-found h2 { font-size: 24px; font-weight: 700; color: var(--text-main); margin-bottom: 10px; }
.not-found p { color: var(--text-weak); font-size: 15px; margin-bottom: 28px; }

/* ===== 侧边栏 ===== */
.article-aside { display: flex; flex-direction: column; gap: 24px; }
.aside-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  padding: 24px;
  box-shadow: var(--shadow-card);
}
.aside-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.aside-title::before {
  content: '';
  width: 4px;
  height: 18px;
  background: var(--accent);
  border-radius: 2px;
  flex-shrink: 0;
}
.aside-list { list-style: none; }
.aside-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 0;
  font-size: 14px;
  color: var(--text-weak);
  border-bottom: 1px dashed var(--border-light);
  line-height: 1.6;
}
.aside-list li:last-child { border-bottom: none; }
.aside-list li i { color: var(--accent); margin-top: 4px; flex-shrink: 0; }
@media (max-width: 1024px) {
  .article-aside { flex-direction: row; flex-wrap: wrap; }
  .aside-card { flex: 1; min-width: 260px; }
}

/* ===== 相关资讯 ===== */
.related-section { padding: 72px 0; background: var(--bg-soft); }
.section-head { text-align: center; margin-bottom: 44px; }
.section-tag {
  display: inline-block;
  background: rgba(245,158,11,0.12);
  color: #b45309;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 12px;
  letter-spacing: 2px;
}
.section-head h2 { font-size: 32px; font-weight: 700; color: var(--text-main); }
.related-grid {
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.related-card {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 16px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-card);
}
.related-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); }
.related-card-img { overflow: hidden; aspect-ratio: 16 / 9; }
.related-card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.related-card:hover .related-card-img img { transform: scale(1.05); }
.related-card-body { padding: 20px 22px; }
.related-card-body h3 {
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  margin: 12px 0 8px;
  color: var(--text-main);
  transition: var(--transition);
}
.related-card-body h3:hover { color: var(--primary); }
.related-card-body p {
  font-size: 14px;
  color: var(--text-weak);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-time {
  font-size: 12px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
@media (max-width: 768px) {
  .related-section { padding: 48px 0; }
  .section-head h2 { font-size: 26px; }
}

/* ===== FAQ ===== */
.faq-section { padding: 72px 0; }
.faq-list { max-width: 800px; margin: 0 auto; }
.faq-item {
  background: #fff;
  border: 1px solid var(--border-light);
  border-radius: 14px;
  margin-bottom: 14px;
  padding: 20px 24px;
  transition: var(--transition);
}
.faq-item:hover { border-color: var(--primary-light); box-shadow: 0 6px 20px rgba(30,77,140,0.08); }
.faq-item.open { border-color: var(--primary-light); box-shadow: 0 8px 24px rgba(30,77,140,0.1); }
.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 600;
  font-size: 16px;
  color: var(--text-main);
  cursor: pointer;
}
.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-soft);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-icon { background: var(--primary); color: #fff; transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
  color: var(--text-weak);
  font-size: 15px;
  line-height: 1.7;
}
.faq-answer p { padding-top: 14px; }
@media (max-width: 768px) {
  .faq-section { padding: 48px 0; }
  .faq-question { font-size: 15px; }
}

/* ===== CTA ===== */
.cta-section { padding: 40px 0 80px; }
.cta-card {
  position: relative;
  background: linear-gradient(135deg, #173a6a, #2563a8);
  border-radius: 24px;
  padding: 56px;
  text-align: center;
  color: #fff;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(23, 58, 106, 0.3);
}
.cta-card::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 240px;
  height: 240px;
  border-radius: 50%;
  background: rgba(245,158,11,0.15);
}
.cta-card::after {
  content: '';
  position: absolute;
  bottom: -80px;
  left: -80px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(245,158,11,0.1);
}
.cta-card h2 { font-size: 30px; font-weight: 700; margin-bottom: 14px; position: relative; z-index: 1; }
.cta-card p { color: rgba(255,255,255,0.85); max-width: 560px; margin: 0 auto 30px; position: relative; z-index: 1; }
.cta-buttons { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; position: relative; z-index: 1; }
.cta-buttons .btn-outline { border-color: rgba(255,255,255,0.35); color: #fff; background: transparent; }
.cta-buttons .btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); }
@media (max-width: 768px) {
  .cta-section { padding: 32px 0 56px; }
  .cta-card { padding: 40px 24px; }
  .cta-card h2 { font-size: 24px; }
}

/* ===== 页脚 ===== */
.footer {
  background: #0b1f3a;
  color: rgba(255,255,255,0.6);
  padding: 64px 0 24px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #fff;
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 16px;
}
.footer-brand .logo-icon { width: 38px; height: 38px; font-size: 18px; }
.footer-title { color: #fff; font-size: 16px; font-weight: 600; margin-bottom: 18px; }
.footer-links { list-style: none; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.6); }
.footer-links a:hover { color: var(--accent); padding-left: 4px; }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-top: 40px;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 14px;
  color: rgba(255,255,255,0.5);
}

/* roulang page: category2 */
:root {
    --primary: #0f2a43;
    --primary-light: #1e4a6e;
    --primary-dark: #0a1f33;
    --accent: #0284c7;
    --accent-light: #e0f2fe;
    --warm: #ea580c;
    --warm-light: #fff7ed;
    --bg: #f8fafc;
    --bg-soft: #f1f5f9;
    --white: #ffffff;
    --text: #0f172a;
    --text-weak: #64748b;
    --border: #e2e8f0;
    --radius-lg: 18px;
    --radius: 14px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(15, 42, 67, 0.08);
    --shadow-hover: 0 14px 36px rgba(15, 42, 67, 0.14);
    --container: 1200px;
  }

  *, *::before, *::after { box-sizing: border-box; }
  html { scroll-behavior: smooth; }
  body {
    margin: 0;
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.75;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
  }
  a { text-decoration: none; color: inherit; transition: color .2s ease; }
  img { max-width: 100%; display: block; }
  button, input { font: inherit; border: none; outline: none; }
  ul, ol { margin: 0; padding: 0; list-style: none; }

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

  .site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 2px 12px rgba(15,42,67,.04);
  }
  .header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; gap: 16px; }
  .brand { display: inline-flex; align-items: center; gap: 10px; flex-shrink: 0; font-weight: 800; font-size: 1.1rem; color: var(--primary); }
  .brand .logo-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 12px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff; font-size: 1.15rem; font-weight: 800;
    box-shadow: 0 4px 14px rgba(2,132,199,.3);
  }
  .nav-links { display: flex; align-items: center; gap: 8px; }
  .nav-link {
    padding: 8px 16px; border-radius: 999px;
    font-size: .92rem; font-weight: 600; color: var(--text-weak);
    transition: all .2s ease;
  }
  .nav-link:hover { color: var(--accent); background: var(--accent-light); }
  .nav-link.active { color: #fff; background: var(--primary); box-shadow: 0 4px 14px rgba(15,42,67,.2); }
  .header-tools { display: flex; align-items: center; gap: 12px; }
  .search-box {
    display: flex; align-items: center; gap: 4px;
    background: var(--bg-soft); border: 1px solid var(--border);
    border-radius: 999px; padding: 6px 6px 6px 16px;
    width: 220px; transition: border-color .2s, box-shadow .2s;
  }
  .search-box:focus-within { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(2,132,199,.15); }
  .search-box input { flex: 1; background: transparent; font-size: .87rem; color: var(--text); min-width: 0; }
  .search-box input::placeholder { color: #94a3b8; }
  .search-box button {
    width: 34px; height: 34px; border-radius: 50%;
    background: var(--accent); color: #fff; cursor: pointer;
    display: inline-flex; align-items: center; justify-content: center;
    transition: background .2s;
  }
  .search-box button:hover { background: var(--primary); }
  .nav-toggle { display: none; background: transparent; font-size: 1.3rem; color: var(--primary); cursor: pointer; width: 42px; height: 42px; border-radius: 10px; }
  .nav-toggle:hover { background: var(--bg-soft); }

  .mobile-menu { display: none; flex-direction: column; padding: 12px 24px 20px; background: #fff; border-top: 1px solid var(--border); }
  .mobile-menu a { padding: 12px 8px; border-radius: 10px; font-weight: 600; color: var(--text); border-bottom: 1px solid var(--bg-soft); }
  .mobile-menu a:last-child { border-bottom: none; }
  .mobile-menu a:hover { background: var(--accent-light); color: var(--accent); }
  .mobile-menu a.active { color: var(--accent); }

  .btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 12px 24px; border-radius: 999px;
    font-weight: 700; font-size: .92rem;
    transition: all .25s ease; cursor: pointer;
  }
  .btn-primary { background: var(--primary); color: #fff; box-shadow: 0 6px 18px rgba(15,42,67,.22); }
  .btn-primary:hover { background: var(--primary-light); transform: translateY(-2px); box-shadow: 0 10px 26px rgba(15,42,67,.28); }
  .btn-primary:active { transform: translateY(0); }
  .btn-ghost { background: rgba(255,255,255,.15); color: #fff; border: 1px solid rgba(255,255,255,.35); backdrop-filter: blur(4px); }
  .btn-ghost:hover { background: rgba(255,255,255,.28); color: #fff; }
  .btn-outline { border: 1px solid var(--border); background: #fff; color: var(--text); }
  .btn-outline:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-light); }
  .btn-warm { background: var(--warm); color: #fff; box-shadow: 0 8px 20px rgba(234,88,12,.3); }
  .btn-warm:hover { background: #c2410c; transform: translateY(-2px); box-shadow: 0 12px 28px rgba(234,88,12,.35); }
  .btn-sm { padding: 9px 18px; font-size: .85rem; }

  .section { padding: 88px 0; }
  .section-soft { background: var(--bg-soft); }
  .section-dark {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff; position: relative; overflow: hidden;
  }
  .section-dark::after {
    content: ''; position: absolute; right: -120px; top: -120px; width: 360px; height: 360px;
    border-radius: 50%; background: radial-gradient(circle, rgba(2,132,199,.35), transparent 70%);
  }
  .section-dark .section-head .section-tag { background: rgba(255,255,255,.12); color: #fff; border: 1px solid rgba(255,255,255,.2); }
  .section-dark .section-head h2 { color: #fff; }
  .section-dark .section-head p { color: rgba(255,255,255,.75); }

  .section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
  .section-tag {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 999px;
    background: var(--accent-light); color: var(--accent);
    font-size: .82rem; font-weight: 700; letter-spacing: .04em;
    margin-bottom: 16px;
  }
  .section-head h2 { font-size: clamp(1.7rem, 3vw, 2.4rem); font-weight: 800; color: var(--primary); margin: 0 0 14px; line-height: 1.3; letter-spacing: -.01em; }
  .section-head p { font-size: 1rem; color: var(--text-weak); margin: 0; }

  .category-hero {
    position: relative;
    background-image: url('/assets/images/backpic/back-2.png');
    background-size: cover; background-position: center;
    padding: 130px 0 160px; text-align: center; color: #fff;
  }
  .category-hero::before {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(10,31,51,.72), rgba(15,42,67,.58));
  }
  .category-hero .container { position: relative; z-index: 2; }
  .hero-badge {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 8px 20px; border-radius: 999px;
    background: rgba(255,255,255,.14); border: 1px solid rgba(255,255,255,.28);
    backdrop-filter: blur(6px); font-size: .85rem; font-weight: 700; color: #fff;
    margin-bottom: 22px; letter-spacing: .05em;
  }
  .hero-badge i { color: #7dd3fc; }
  .category-hero h1 {
    font-size: clamp(2rem, 4.5vw, 3.4rem); font-weight: 900; line-height: 1.2;
    margin: 0 0 18px; letter-spacing: -.02em; text-shadow: 0 4px 20px rgba(0,0,0,.25);
  }
  .category-hero .hero-desc {
    max-width: 680px; margin: 0 auto 36px;
    font-size: 1.08rem; line-height: 1.8; color: rgba(255,255,255,.9);
  }
  .hero-actions { display: flex; justify-content: center; gap: 14px; flex-wrap: wrap; }
  .hero-wave {
    position: absolute; bottom: -1px; left: 0; width: 100%; height: 80px; z-index: 1;
    color: var(--bg);
  }

  .steps-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .step-card {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
    padding: 32px 26px; position: relative; box-shadow: var(--shadow);
    transition: all .3s ease; overflow: hidden;
  }
  .step-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-hover); border-color: rgba(2,132,199,.3); }
  .step-card::before {
    content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--primary));
    opacity: 0; transition: opacity .3s;
  }
  .step-card:hover::before { opacity: 1; }
  .step-num {
    font-size: 2.6rem; font-weight: 900; color: var(--accent);
    opacity: .18; line-height: 1; margin-bottom: 6px;
  }
  .step-card h3 { font-size: 1.1rem; font-weight: 800; color: var(--primary); margin: 0 0 10px; }
  .step-card p { font-size: .9rem; color: var(--text-weak); line-height: 1.75; margin: 0; }

  .prep-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
  .prep-item {
    background: #fff; border-radius: var(--radius-lg); padding: 32px 26px;
    border: 1px solid var(--border); box-shadow: var(--shadow);
    transition: all .3s ease;
  }
  .prep-item:hover { transform: translateY(-5px); box-shadow: var(--shadow-hover); }
  .prep-icon {
    width: 52px; height: 52px; border-radius: 16px;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 1.25rem; color: #fff; margin-bottom: 18px;
  }
  .prep-icon.i-blue { background: linear-gradient(135deg, var(--accent), #0ea5e9); box-shadow: 0 6px 16px rgba(2,132,199,.35); }
  .prep-icon.i-navy { background: linear-gradient(135deg, var(--primary), var(--primary-light)); box-shadow: 0 6px 16px rgba(15,42,67,.3); }
  .prep-icon.i-warm { background: linear-gradient(135deg, var(--warm), #f97316); box-shadow: 0 6px 16px rgba(234,88,12,.3); }
  .prep-icon.i-green { background: linear-gradient(135deg, #059669, #10b981); box-shadow: 0 6px 16px rgba(5,150,105,.3); }
  .prep-item h3 { font-size: 1.06rem; font-weight: 800; color: var(--primary); margin: 0 0 10px; }
  .prep-item p { font-size: .89rem; color: var(--text-weak); margin: 0; line-height: 1.7; }

  .faq-wrap { max-width: 820px; margin: 0 auto; }
  .faq-item {
    background: #fff; border: 1px solid var(--border); border-radius: var(--radius);
    margin-bottom: 14px; overflow: hidden; transition: box-shadow .25s;
  }
  .faq-item:hover { box-shadow: var(--shadow); border-color: rgba(2,132,199,.25); }
  .faq-item summary {
    display: flex; align-items: center; justify-content: space-between;
    padding: 20px 24px; cursor: pointer; list-style: none;
    font-weight: 700; font-size: .98rem; color: var(--text);
    transition: background .2s;
  }
  .faq-item summary::-webkit-details-marker { display: none; }
  .faq-item summary:hover { background: #f8fafc; }
  .faq-item summary .faq-icon {
    width: 26px; height: 26px; border-radius: 50%; flex-shrink: 0;
    background: var(--accent-light); color: var(--accent);
    display: inline-flex; align-items: center; justify-content: center;
    font-size: .8rem; transition: all .3s;
  }
  .faq-item[open] summary .faq-icon { background: var(--accent); color: #fff; transform: rotate(45deg); }
  .faq-item .faq-answer { padding: 4px 24px 22px; color: var(--text-weak); font-size: .93rem; line-height: 1.8; border-top: 1px dashed var(--border); margin: 0 20px 18px; padding-top: 16px; }

  .safety-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; position: relative; z-index: 2; }
  .safety-card {
    background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.14);
    border-radius: var(--radius-lg); padding: 30px 24px;
    backdrop-filter: blur(8px); transition: background .3s, transform .3s;
  }
  .safety-card:hover { background: rgba(255,255,255,.14); transform: translateY(-4px); }
  .safety-card i { font-size: 1.6rem; color: #7dd3fc; margin-bottom: 14px; display: block; }
  .safety-card h3 { font-size: 1.02rem; font-weight: 800; color: #fff; margin: 0 0 10px; }
  .safety-card p { font-size: .86rem; color: rgba(255,255,255,.72); line-height: 1.7; margin: 0; }

  .resource-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
  .resource-card {
    background: #fff; border-radius: var(--radius-lg); overflow: hidden;
    border: 1px solid var(--border); box-shadow: var(--shadow);
    display: flex; flex-direction: column;
    transition: all .3s ease;
  }
  .resource-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-hover); }
  .resource-card .card-img { position: relative; height: 200px; overflow: hidden; }
  .resource-card .card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s ease; }
  .resource-card:hover .card-img img { transform: scale(1.06); }
  .card-cat {
    position: absolute; left: 16px; top: 16px;
    padding: 4px 14px; border-radius: 999px;
    background: rgba(255,255,255,.95); color: var(--primary);
    font-size: .76rem; font-weight: 700;
  }
  .resource-card .card-body { padding: 26px 24px 28px; display: flex; flex-direction: column; flex: 1; }
  .resource-card h3 { font-size: 1.12rem; font-weight: 800; color: var(--primary); margin: 0 0 10px; line-height: 1.4; }
  .resource-card .card-desc { font-size: .89rem; color: var(--text-weak); line-height: 1.75; margin: 0 0 20px; flex: 1; }
  .card-meta { display: flex; align-items: center; justify-content: space-between; font-size: .82rem; color: #94a3b8; }
  .card-meta a { color: var(--accent); font-weight: 700; display: inline-flex; align-items: center; gap: 6px; }
  .card-meta a:hover { color: var(--primary); }

  .cta-box {
    position: relative; background: #fff; border: 1px solid var(--border);
    border-radius: 28px; padding: 64px 48px; text-align: center;
    box-shadow: var(--shadow); overflow: hidden;
  }
  .cta-box::before {
    content: ''; position: absolute; left: -80px; top: -80px;
    width: 240px; height: 240px; border-radius: 50%;
    background: radial-gradient(circle, var(--accent-light), transparent 70%);
  }
  .cta-box h2 { font-size: clamp(1.5rem, 2.6vw, 2.2rem); font-weight: 900; color: var(--primary); margin: 0 0 14px; position: relative; }
  .cta-box p { max-width: 560px; margin: 0 auto 30px; color: var(--text-weak); font-size: .98rem; position: relative; }
  .cta-box .btn { position: relative; }
  .cta-note { display: flex; justify-content: center; gap: 28px; margin-top: 24px; flex-wrap: wrap; font-size: .84rem; color: #94a3b8; position: relative; }
  .cta-note span { display: inline-flex; align-items: center; gap: 6px; }
  .cta-note i { color: #10b981; }

  .footer { background: var(--primary-dark); color: rgba(255,255,255,.75); padding: 64px 0 32px; }
  .footer-brand { display: inline-flex; align-items: center; gap: 10px; font-size: 1.15rem; font-weight: 800; color: #fff; margin-bottom: 16px; }
  .footer-brand .logo-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 40px; height: 40px; border-radius: 12px;
    background: linear-gradient(135deg, var(--accent), #38bdf8); color: #fff;
    font-size: 1.2rem; font-weight: 800;
  }
  .footer-title { font-size: .95rem; font-weight: 800; color: #fff; margin: 0 0 18px; letter-spacing: .03em; }
  .footer-links li { margin-bottom: 10px; }
  .footer-links a { color: rgba(255,255,255,.7); font-size: .9rem; transition: color .2s; }
  .footer-links a:hover { color: #7dd3fc; }
  .footer-bottom {
    margin-top: 48px; padding-top: 28px;
    border-top: 1px solid rgba(255,255,255,.1);
    display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  }
  .footer-bottom p { font-size: .82rem; margin: 0; color: rgba(255,255,255,.55); }

  @media (max-width: 1024px) {
    .steps-grid { grid-template-columns: repeat(2, 1fr); }
    .prep-grid { grid-template-columns: repeat(2, 1fr); }
    .safety-grid { grid-template-columns: repeat(2, 1fr); }
    .resource-grid { grid-template-columns: repeat(2, 1fr); }
    .nav-links { display: none; }
    .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
    .search-box { display: none; }
    .mobile-menu.open { display: flex; }
  }

  @media (max-width: 768px) {
    .section { padding: 64px 0; }
    .container { padding: 0 20px; }
    .category-hero { padding: 100px 0 130px; }
    .section-head { margin-bottom: 40px; }
    .section-head p { font-size: .92rem; }
    .cta-box { padding: 44px 24px; }
    .footer-bottom { flex-direction: column; }
  }

  @media (max-width: 520px) {
    .steps-grid { grid-template-columns: 1fr; }
    .prep-grid { grid-template-columns: 1fr; }
    .safety-grid { grid-template-columns: 1fr; }
    .resource-grid { grid-template-columns: 1fr; }
    .header-inner { height: 64px; }
    .brand span:last-child { display: none; }
    .brand .logo-icon { font-size: 1.05rem; }
    .hero-actions .btn { width: 100%; }
    .cta-note { flex-direction: column; gap: 12px; }
    .faq-item summary { font-size: .9rem; padding: 18px 16px; }
    .faq-item .faq-answer { margin: 0 14px 14px; padding: 14px 12px 16px; font-size: .88rem; }
  }