/* roulang page: index */
:root{
      --navy:#101828;
      --navy-2:#14213d;
      --ink:#1d2939;
      --muted:#667085;
      --soft:#f6f7fb;
      --paper:#ffffff;
      --line:#e7eaf0;
      --gold:#d8a63a;
      --gold-2:#f2c96d;
      --teal:#2f8f83;
      --red:#e25555;
      --radius-xl:28px;
      --radius-lg:20px;
      --radius-md:14px;
      --shadow-sm:0 10px 24px rgba(16,24,40,.08);
      --shadow-md:0 22px 50px rgba(16,24,40,.12);
      --shadow-dark:0 24px 70px rgba(0,0,0,.25);
      --container:1180px;
      --ease:all .22s ease;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",Arial,sans-serif;
      color:var(--ink);
      background:linear-gradient(180deg,#f8fafc 0%,#fff 36%,#f6f7fb 100%);
      line-height:1.78;
      text-rendering:optimizeLegibility;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    a:hover{color:var(--gold)}
    img{max-width:100%;display:block}
    button,input,textarea{font:inherit}
    input,textarea{
      width:100%;
      border:1px solid var(--line);
      border-radius:14px;
      padding:14px 16px;
      background:#fff;
      color:var(--ink);
      transition:var(--ease);
      outline:none;
    }
    input:focus,textarea:focus,button:focus,a:focus{
      outline:3px solid rgba(216,166,58,.28);
      outline-offset:3px;
    }
    .site-container{max-width:var(--container);margin:0 auto;padding:0 24px}
    .topbar{
      position:sticky;
      top:0;
      z-index:50;
      background:rgba(16,24,40,.96);
      backdrop-filter:blur(16px);
      border-bottom:1px solid rgba(255,255,255,.08);
      box-shadow:0 12px 30px rgba(0,0,0,.18);
    }
    .nav-wrap{
      min-height:74px;
      display:flex;
      align-items:center;
      justify-content:space-between;
      gap:22px;
    }
    .brand{
      display:flex;
      align-items:center;
      gap:12px;
      color:#fff;
      font-weight:800;
      letter-spacing:.2px;
      white-space:nowrap;
    }
    .brand-mark{
      width:42px;height:42px;border-radius:14px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--gold),#ffe5a0);
      color:#101828;
      box-shadow:0 10px 22px rgba(216,166,58,.28);
    }
    .brand small{display:block;color:#b7c0d1;font-weight:500;font-size:12px;margin-top:2px}
    .nav-menu{
      display:flex;
      align-items:center;
      gap:6px;
      margin:0;
      list-style:none;
    }
    .nav-menu a{
      display:inline-flex;
      align-items:center;
      min-height:40px;
      padding:8px 16px;
      color:#d0d5dd;
      border-radius:999px;
      font-weight:600;
    }
    .nav-menu a:hover,.nav-menu a.active{
      color:#fff;
      background:rgba(255,255,255,.1);
    }
    .nav-search{
      width:220px;
      position:relative;
    }
    .nav-search input{
      height:42px;
      border:1px solid rgba(255,255,255,.14);
      background:rgba(255,255,255,.08);
      color:#fff;
      border-radius:999px;
      padding:0 42px 0 16px;
    }
    .nav-search input::placeholder{color:#aeb8c8}
    .nav-search i{
      position:absolute;
      right:16px;
      top:50%;
      transform:translateY(-50%);
      color:#cfd6e3;
    }
    .nav-cta{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:8px;
      min-height:42px;
      padding:0 18px;
      border-radius:999px;
      background:var(--gold);
      color:#101828!important;
      font-weight:800;
      box-shadow:0 12px 28px rgba(216,166,58,.25);
      white-space:nowrap;
    }
    .nav-cta:hover{transform:translateY(-2px);background:var(--gold-2)}
    .menu-toggle{
      display:none;
      width:44px;height:44px;
      border:1px solid rgba(255,255,255,.16);
      background:rgba(255,255,255,.08);
      color:#fff;border-radius:14px;
      cursor:pointer;
    }

    .section{padding:84px 0}
    .section.alt{background:var(--soft)}
    .section-head{
      display:flex;
      align-items:flex-end;
      justify-content:space-between;
      gap:28px;
      margin-bottom:34px;
    }
    .eyebrow{
      display:inline-flex;
      align-items:center;
      gap:8px;
      padding:7px 12px;
      border-radius:999px;
      background:#fff7e2;
      color:#8a5b00;
      font-weight:800;
      font-size:13px;
      border:1px solid #f5dfac;
      margin-bottom:12px;
    }
    .section-title{
      margin:0;
      font-size:clamp(28px,3.2vw,42px);
      line-height:1.24;
      letter-spacing:-.5px;
      color:var(--navy);
      font-weight:900;
    }
    .section-desc{
      margin:12px 0 0;
      color:var(--muted);
      max-width:720px;
      font-size:16px;
    }
    .btn{
      display:inline-flex;
      align-items:center;
      justify-content:center;
      gap:10px;
      border:0;
      border-radius:999px;
      padding:14px 22px;
      min-height:50px;
      font-weight:850;
      cursor:pointer;
      transition:var(--ease);
      line-height:1;
    }
    .btn-primary{background:var(--gold);color:#101828;box-shadow:0 16px 34px rgba(216,166,58,.28)}
    .btn-primary:hover{background:var(--gold-2);color:#101828;transform:translateY(-2px)}
    .btn-dark{background:var(--navy);color:#fff;box-shadow:0 16px 34px rgba(16,24,40,.18)}
    .btn-dark:hover{background:#26334d;color:#fff;transform:translateY(-2px)}
    .btn-ghost{background:rgba(255,255,255,.12);color:#fff;border:1px solid rgba(255,255,255,.2)}
    .btn-ghost:hover{background:#fff;color:var(--navy);transform:translateY(-2px)}
    .badge{
      display:inline-flex;
      align-items:center;
      gap:7px;
      border-radius:999px;
      padding:6px 10px;
      font-size:12px;
      font-weight:800;
      color:#0f5132;
      background:#dcfce7;
      border:1px solid #bbf7d0;
    }

    .hero{
      position:relative;
      min-height:650px;
      display:flex;
      align-items:center;
      overflow:hidden;
      color:#fff;
      background:
        radial-gradient(circle at 18% 22%,rgba(242,201,109,.32),transparent 28%),
        radial-gradient(circle at 80% 12%,rgba(47,143,131,.34),transparent 30%),
        linear-gradient(135deg,rgba(16,24,40,.96),rgba(20,33,61,.88)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1600' height='760' viewBox='0 0 1600 760'%3E%3Cpath d='M0 470 C220 390 320 580 540 510 S880 270 1090 350 1350 590 1600 460' fill='none' stroke='%23ffffff' stroke-opacity='.12' stroke-width='3'/%3E%3Cpath d='M0 550 C260 420 430 620 690 520 S1050 270 1270 390 1440 540 1600 500' fill='none' stroke='%23f2c96d' stroke-opacity='.18' stroke-width='2'/%3E%3Ccircle cx='1230' cy='210' r='150' fill='%23ffffff' fill-opacity='.04'/%3E%3Ccircle cx='260' cy='160' r='120' fill='%23ffffff' fill-opacity='.04'/%3E%3C/svg%3E") center/cover no-repeat;
    }
    .hero:after{
      content:"";
      position:absolute;inset:auto 0 0;
      height:160px;
      background:linear-gradient(180deg,transparent,rgba(248,250,252,.98));
      pointer-events:none;
    }
    .hero-content{
      position:relative;
      z-index:2;
      max-width:980px;
      padding:92px 0 110px;
    }
    .activity-strip{
      display:flex;
      flex-wrap:wrap;
      gap:12px;
      align-items:center;
      width:max-content;
      max-width:100%;
      padding:10px;
      margin-bottom:28px;
      border:1px solid rgba(255,255,255,.16);
      border-radius:999px;
      background:rgba(255,255,255,.1);
      box-shadow:var(--shadow-dark);
      backdrop-filter:blur(12px);
    }
    .strip-label{
      padding:8px 14px;
      border-radius:999px;
      background:rgba(216,166,58,.98);
      color:#101828;
      font-weight:900;
    }
    .countdown{
      display:flex;
      align-items:center;
      gap:8px;
      color:#eef2f7;
      font-weight:700;
      padding-right:12px;
    }
    .timebox{
      min-width:34px;
      padding:4px 8px;
      border-radius:10px;
      background:rgba(255,255,255,.16);
      color:#fff;
      text-align:center;
    }
    h1{
      margin:0;
      max-width:930px;
      font-size:clamp(38px,6vw,72px);
      line-height:1.08;
      letter-spacing:-1.8px;
      font-weight:950;
      text-wrap:balance;
    }
    .hero-lead{
      max-width:780px;
      margin:24px 0 0;
      color:#e3e8f0;
      font-size:clamp(17px,2vw,21px);
      line-height:1.9;
    }
    .hero-actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
    .hero-points{
      display:grid;
      grid-template-columns:repeat(3,minmax(0,1fr));
      gap:14px;
      margin-top:42px;
      max-width:920px;
    }
    .point-card{
      padding:18px;
      border:1px solid rgba(255,255,255,.14);
      border-radius:22px;
      background:rgba(255,255,255,.09);
      backdrop-filter:blur(14px);
    }
    .point-card strong{display:block;font-size:26px;line-height:1;color:#fff;margin-bottom:7px}
    .point-card span{color:#cfd6e3;font-size:14px}

    .category-ribbon{
      margin-top:-62px;
      position:relative;
      z-index:3;
      padding-top:0;
    }
    .category-box{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      box-shadow:var(--shadow-md);
      padding:22px;
    }
    .category-grid{
      display:grid;
      grid-template-columns:1.2fr repeat(4,1fr);
      gap:14px;
    }
    .cat-intro{
      padding:22px;
      border-radius:22px;
      background:linear-gradient(135deg,#fff7e2,#ffffff);
      border:1px solid #f4e2b6;
    }
    .cat-intro h2{font-size:24px;margin:0 0 10px;color:var(--navy);font-weight:900}
    .cat-intro p{margin:0;color:var(--muted);line-height:1.75}
    .cat-card{
      padding:20px;
      min-height:154px;
      border:1px solid var(--line);
      border-radius:22px;
      background:#fff;
      transition:var(--ease);
    }
    .cat-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-sm);border-color:#efd392}
    .cat-card i{font-size:24px;color:var(--gold);margin-bottom:16px}
    .cat-card h3{font-size:18px;margin:0 0 8px;color:var(--navy);font-weight:900}
    .cat-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}

    .resource-layout{
      display:grid;
      grid-template-columns:1.15fr .85fr;
      gap:22px;
      align-items:stretch;
    }
    .resource-feature{
      min-height:460px;
      border-radius:var(--radius-xl);
      overflow:hidden;
      background:
        linear-gradient(180deg,rgba(16,24,40,.1),rgba(16,24,40,.82)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='840' height='520' viewBox='0 0 840 520'%3E%3Crect width='840' height='520' fill='%2314213d'/%3E%3Ccircle cx='160' cy='120' r='130' fill='%23d8a63a' fill-opacity='.35'/%3E%3Ccircle cx='650' cy='180' r='160' fill='%232f8f83' fill-opacity='.28'/%3E%3Cpath d='M90 380 C220 300 310 420 470 340 S680 250 780 320' stroke='%23fff' stroke-opacity='.22' stroke-width='8' fill='none'/%3E%3Crect x='130' y='170' width='580' height='220' rx='28' fill='%23fff' fill-opacity='.10' stroke='%23fff' stroke-opacity='.18'/%3E%3C/svg%3E") center/cover no-repeat;
      color:#fff;
      display:flex;
      align-items:flex-end;
      padding:32px;
      box-shadow:var(--shadow-md);
    }
    .resource-feature h2{font-size:34px;line-height:1.25;margin:14px 0;color:#fff;font-weight:950}
    .resource-feature p{color:#e6ebf3;margin:0;max-width:610px}
    .resource-stack{display:grid;gap:16px}
    .resource-card{
      display:flex;
      gap:16px;
      align-items:flex-start;
      padding:20px;
      border:1px solid var(--line);
      border-radius:22px;
      background:#fff;
      transition:var(--ease);
    }
    .resource-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-sm)}
    .icon-circle{
      width:46px;height:46px;flex:0 0 46px;
      display:grid;place-items:center;
      border-radius:16px;
      background:#eef8f6;
      color:var(--teal);
    }
    .resource-card h3{font-size:18px;margin:0 0 7px;font-weight:900;color:var(--navy)}
    .resource-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.7}

    .info-shell{
      display:grid;
      grid-template-columns:minmax(0,1fr) 340px;
      gap:26px;
    }
    .article-list{
      background:#fff;
      border:1px solid var(--line);
      border-radius:var(--radius-xl);
      padding:10px;
      box-shadow:var(--shadow-sm);
    }
    .article-item{
      display:grid;
      grid-template-columns:120px 1fr auto;
      gap:18px;
      align-items:center;
      padding:18px;
      border-radius:20px;
      border-bottom:1px solid var(--line);
    }
    .article-item:last-child{border-bottom:0}
    .article-date{
      border-radius:18px;
      padding:14px;
      text-align:center;
      background:#f8fafc;
      color:var(--muted);
      font-weight:800;
    }
    .article-date b{display:block;color:var(--navy);font-size:24px;line-height:1}
    .article-item h3{font-size:19px;margin:0 0 6px;font-weight:900;color:var(--navy)}
    .article-item p{margin:0;color:var(--muted);font-size:14px;line-height:1.65}
    .article-item .arrow{
      width:42px;height:42px;border-radius:50%;
      display:grid;place-items:center;
      background:#fff7e2;color:#9a6800;
      transition:var(--ease);
    }
    .article-item:hover .arrow{background:var(--gold);color:#101828;transform:translateX(3px)}
    .recommend{
      background:var(--navy);
      color:#fff;
      border-radius:var(--radius-xl);
      padding:26px;
      box-shadow:var(--shadow-md);
      position:relative;
      overflow:hidden;
    }
    .recommend:before{
      content:"";
      position:absolute;
      inset:-120px -90px auto auto;
      width:240px;height:240px;border-radius:50%;
      background:rgba(216,166,58,.2);
    }
    .recommend h3{position:relative;margin:0 0 16px;color:#fff;font-size:24px;font-weight:950}
    .recommend ul{position:relative;margin:0;padding:0;list-style:none;display:grid;gap:12px}
    .recommend li{
      padding:13px 0;
      border-bottom:1px solid rgba(255,255,255,.12);
      color:#d8dee9;
      font-size:15px;
    }
    .recommend li:last-child{border-bottom:0}
    .recommend i{color:var(--gold);margin-right:8px}

    .download-panel{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:28px;
      align-items:center;
      padding:38px;
      border-radius:var(--radius-xl);
      background:linear-gradient(135deg,#14213d,#101828);
      color:#fff;
      box-shadow:var(--shadow-md);
      overflow:hidden;
      position:relative;
    }
    .download-panel:after{
      content:"";
      position:absolute;
      right:-70px;bottom:-100px;
      width:320px;height:320px;border-radius:50%;
      background:rgba(216,166,58,.18);
    }
    .download-panel h2{color:#fff;font-size:36px;line-height:1.25;margin:10px 0 14px;font-weight:950}
    .download-panel p{color:#dce3ef;margin:0 0 24px;max-width:600px}
    .save-card{
      position:relative;
      z-index:1;
      padding:24px;
      border-radius:24px;
      background:rgba(255,255,255,.1);
      border:1px solid rgba(255,255,255,.15);
      backdrop-filter:blur(12px);
    }
    .save-card label{color:#fff;font-weight:800;margin-bottom:8px;display:block}
    .save-card .hint{margin-top:12px;color:#cbd5e1;font-size:14px}
    .copy-row{display:flex;gap:10px}
    .copy-row input{background:rgba(255,255,255,.92);border:0;color:var(--navy)}

    .view-grid{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .quote-card{
      padding:26px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      position:relative;
      transition:var(--ease);
    }
    .quote-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md)}
    .quote-card .quote{font-size:34px;color:var(--gold);line-height:1;margin-bottom:14px}
    .quote-card h3{font-size:21px;margin:0 0 10px;color:var(--navy);font-weight:950}
    .quote-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.75}

    .tier-wrap{
      display:grid;
      grid-template-columns:repeat(3,1fr);
      gap:20px;
    }
    .tier-card{
      padding:26px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
      transition:var(--ease);
    }
    .tier-card.featured{
      background:linear-gradient(180deg,#fff7df,#fff);
      border-color:#efd392;
      transform:translateY(-8px);
    }
    .tier-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-md)}
    .tier-card.featured:hover{transform:translateY(-10px)}
    .tier-card h3{font-size:22px;margin:12px 0 8px;font-weight:950;color:var(--navy)}
    .tier-card p{margin:0 0 18px;color:var(--muted);line-height:1.7}
    .progress-line{height:10px;border-radius:999px;background:#eef2f7;overflow:hidden;margin:16px 0}
    .progress-line span{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--gold),var(--teal))}
    .tier-list{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .tier-list li{color:#475467;font-size:14px}
    .tier-list i{color:var(--teal);margin-right:8px}

    .timeline{
      position:relative;
      display:grid;
      gap:16px;
      max-width:930px;
      margin:0 auto;
    }
    .time-item{
      display:grid;
      grid-template-columns:150px 1fr;
      gap:22px;
      padding:22px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .time-badge{
      align-self:start;
      padding:10px 12px;
      border-radius:16px;
      background:#eef8f6;
      color:#176b61;
      text-align:center;
      font-weight:900;
    }
    .time-item h3{font-size:20px;margin:0 0 8px;color:var(--navy);font-weight:950}
    .time-item p{margin:0;color:var(--muted);line-height:1.7}

    .faq-grid{
      display:grid;
      grid-template-columns:1fr 1fr;
      gap:18px;
    }
    .faq-card{
      padding:24px;
      border-radius:24px;
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-sm);
    }
    .faq-card h3{font-size:19px;margin:0 0 10px;color:var(--navy);font-weight:950}
    .faq-card p{margin:0;color:var(--muted);font-size:15px;line-height:1.8}

    .contact-cta{
      display:grid;
      grid-template-columns:1.1fr .9fr;
      gap:26px;
      align-items:center;
      padding:36px;
      border-radius:var(--radius-xl);
      background:#fff;
      border:1px solid var(--line);
      box-shadow:var(--shadow-md);
    }
    .contact-cta h2{font-size:36px;line-height:1.25;margin:0 0 14px;color:var(--navy);font-weight:950}
    .contact-cta p{color:var(--muted);margin:0}
    .mini-form{display:grid;gap:12px}
    .mini-form button{width:100%}
    .form-note{font-size:13px;color:var(--muted);margin:0}

    .site-footer{
      background:#0b1220;
      color:#cbd5e1;
      padding:54px 0 26px;
    }
    .footer-grid{
      display:grid;
      grid-template-columns:1.2fr .8fr .8fr;
      gap:34px;
      padding-bottom:34px;
      border-bottom:1px solid rgba(255,255,255,.1);
    }
    .footer-title{color:#fff;font-size:22px;font-weight:950;margin:0 0 12px}
    .footer-logo{display:flex;align-items:center;gap:12px;color:#fff;font-weight:950;font-size:20px;margin-bottom:14px}
    .footer-logo .brand-mark{width:38px;height:38px}
    .footer-grid p{margin:0;color:#aeb8c8;line-height:1.8}
    .footer-links{margin:0;padding:0;list-style:none;display:grid;gap:10px}
    .footer-links a{color:#cbd5e1}
    .footer-links a:hover{color:var(--gold)}
    .copyright{
      display:flex;
      justify-content:space-between;
      gap:16px;
      padding-top:22px;
      color:#94a3b8;
      font-size:14px;
      flex-wrap:wrap;
    }

    @media (max-width:1024px){
      .nav-search{display:none}
      .category-grid{grid-template-columns:1fr 1fr}
      .cat-intro{grid-column:1/-1}
      .resource-layout,.info-shell,.download-panel,.contact-cta{grid-template-columns:1fr}
      .view-grid,.tier-wrap{grid-template-columns:1fr 1fr}
      .hero-points{grid-template-columns:1fr 1fr}
    }
    @media (max-width:768px){
      .site-container{padding:0 18px}
      .nav-wrap{min-height:66px}
      .menu-toggle{display:grid;place-items:center}
      .nav-menu{
        position:absolute;
        left:18px;right:18px;top:72px;
        display:none;
        flex-direction:column;
        align-items:stretch;
        padding:14px;
        border-radius:20px;
        background:#111827;
        border:1px solid rgba(255,255,255,.1);
        box-shadow:var(--shadow-dark);
      }
      .nav-menu.open{display:flex}
      .nav-menu a{justify-content:center}
      .nav-cta{display:none}
      .hero{min-height:auto}
      .hero-content{padding:70px 0 100px}
      .activity-strip{border-radius:24px;width:100%;align-items:flex-start}
      .countdown{flex-wrap:wrap;padding-right:0}
      .hero-points,.category-grid,.view-grid,.tier-wrap,.faq-grid,.footer-grid{grid-template-columns:1fr}
      .section{padding:62px 0}
      .section-head{display:block}
      .article-item{grid-template-columns:1fr;gap:12px}
      .article-date{text-align:left}
      .article-item .arrow{display:none}
      .time-item{grid-template-columns:1fr}
      .copy-row{flex-direction:column}
    }
    @media (max-width:520px){
      .brand span{max-width:180px;overflow:hidden;text-overflow:ellipsis}
      h1{font-size:35px;letter-spacing:-1px}
      .hero-lead{font-size:16px}
      .hero-actions .btn{width:100%}
      .point-card strong{font-size:22px}
      .category-box,.download-panel,.contact-cta{padding:20px;border-radius:22px}
      .resource-feature{min-height:360px;padding:22px}
      .resource-feature h2,.download-panel h2,.contact-cta h2{font-size:28px}
      .section-title{font-size:27px}
      .copyright{display:block}
    }