/* roulang page: index */
:root{
      --ink:#07110E;
      --ink-2:#0B0A0F;
      --charcoal:#1C1B18;
      --muted:#6F6658;
      --gold:#D6B46A;
      --gold-2:#E8C878;
      --copper:#B36A55;
      --purple:#6C4DFF;
      --violet:#8A78FF;
      --green:#0E6B5B;
      --emerald:#16866F;
      --paper:#F8F3EA;
      --sand:#EFE7D8;
      --mist:#FBF7ED;
      --line:#E4D8C4;
      --danger:#B94A48;
      --radius-xl:28px;
      --radius-lg:22px;
      --radius-md:16px;
      --shadow:0 18px 50px rgba(53,39,19,.12);
      --shadow-hover:0 24px 70px rgba(53,39,19,.18);
      --glow:0 0 22px rgba(214,180,106,.25);
      --container:1200px;
      --ease:all .28s ease;
    }

    *{box-sizing:border-box;margin:0;padding:0}
    html{scroll-behavior:smooth}
    body{
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      background:
        radial-gradient(circle at 8% 10%, rgba(214,180,106,.18), transparent 28%),
        radial-gradient(circle at 92% 4%, rgba(108,77,255,.11), transparent 24%),
        var(--paper);
      color:var(--charcoal);
      line-height:1.75;
      font-size:16px;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%;height:auto}
    button,input,select,textarea{font:inherit}
    button{border:0;cursor:pointer;background:none}
    :focus-visible{outline:2px solid var(--gold);outline-offset:4px;border-radius:12px}
    ::selection{background:rgba(214,180,106,.45);color:var(--ink)}

    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .section{padding:86px 0}
    .section-sm{padding:64px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:8px;
      padding:7px 13px;border-radius:999px;
      border:1px solid rgba(214,180,106,.38);
      background:rgba(251,247,237,.78);
      color:#574323;font-size:14px;font-weight:700;
      box-shadow:0 8px 22px rgba(214,180,106,.12);
    }
    .eyebrow::before{
      content:"";width:8px;height:8px;border-radius:50%;
      background:linear-gradient(135deg,var(--gold),var(--purple));
      box-shadow:0 0 16px rgba(214,180,106,.65);
    }
    .section-title{
      margin-top:16px;font-size:clamp(28px,4vw,38px);
      line-height:1.22;letter-spacing:-.02em;color:var(--ink);
    }
    .section-lead{
      margin-top:14px;max-width:760px;color:var(--muted);
      font-size:17px;line-height:1.8;
    }

    .top-line{
      position:fixed;left:0;top:0;width:100%;height:2px;z-index:1001;
      background:linear-gradient(90deg,var(--gold),var(--copper),var(--purple),var(--green));
      box-shadow:0 0 18px rgba(214,180,106,.55);
    }
    .site-header{
      position:sticky;top:0;z-index:1000;
      background:linear-gradient(180deg,rgba(7,17,14,.98),rgba(11,10,15,.96));
      border-bottom:1px solid rgba(214,180,106,.18);
      box-shadow:0 12px 35px rgba(0,0,0,.22);
      backdrop-filter:blur(14px);
    }
    .nav-wrap{
      height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .brand{
      display:flex;align-items:center;gap:13px;min-width:max-content;
    }
    .brand-mark{
      width:44px;height:44px;border-radius:16px;
      background:
        linear-gradient(135deg,rgba(214,180,106,.95),rgba(179,106,85,.9) 55%,rgba(108,77,255,.9)),
        radial-gradient(circle at 30% 20%,#fff,transparent 32%);
      color:var(--ink);display:grid;place-items:center;
      font-weight:900;letter-spacing:.04em;box-shadow:var(--glow);
      position:relative;overflow:hidden;
    }
    .brand-mark::after{
      content:"";position:absolute;inset:9px;border:1px solid rgba(7,17,14,.45);
      border-radius:11px;
    }
    .brand-name{display:block;color:#fff;font-weight:900;font-size:19px;letter-spacing:.02em}
    .brand-sub{display:block;color:rgba(248,243,234,.66);font-size:12px;margin-top:-2px}
    .nav-menu{display:flex;align-items:center;gap:8px}
    .nav-link{
      position:relative;color:rgba(248,243,234,.82);
      padding:11px 14px;border-radius:999px;font-size:15px;font-weight:700;
      transition:var(--ease);
    }
    .nav-link:hover{
      color:var(--gold-2);background:rgba(214,180,106,.08);
      text-shadow:0 0 12px rgba(214,180,106,.45);
    }
    .nav-link.active{
      color:var(--gold-2);background:rgba(214,180,106,.11);
      text-shadow:0 0 14px rgba(214,180,106,.5);
    }
    .nav-link.active::after{
      content:"";position:absolute;left:18px;right:18px;bottom:5px;height:2px;
      background:linear-gradient(90deg,var(--gold),var(--purple));
      border-radius:999px;box-shadow:0 0 12px rgba(214,180,106,.72);
    }
    .nav-cta{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      padding:11px 18px;border-radius:999px;
      color:#1b1307;font-weight:900;
      background:linear-gradient(135deg,var(--gold),var(--copper));
      box-shadow:0 10px 28px rgba(214,180,106,.26);
      transition:var(--ease);white-space:nowrap;
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 16px 38px rgba(214,180,106,.34)}
    .menu-toggle{
      display:none;width:44px;height:44px;border-radius:14px;
      border:1px solid rgba(214,180,106,.32);color:var(--gold);
      align-items:center;justify-content:center;
    }
    .menu-toggle span,.menu-toggle span::before,.menu-toggle span::after{
      display:block;width:20px;height:2px;background:var(--gold);border-radius:999px;position:relative;transition:var(--ease);
    }
    .menu-toggle span::before,.menu-toggle span::after{content:"";position:absolute;left:0}
    .menu-toggle span::before{top:-7px}.menu-toggle span::after{top:7px}
    .menu-toggle.open span{background:transparent}
    .menu-toggle.open span::before{top:0;transform:rotate(45deg)}
    .menu-toggle.open span::after{top:0;transform:rotate(-45deg)}

    .hero{
      padding:74px 0 58px;position:relative;overflow:hidden;
    }
    .hero::before{
      content:"";position:absolute;right:-120px;top:30px;width:420px;height:420px;
      background:radial-gradient(circle,rgba(108,77,255,.18),transparent 65%);
      pointer-events:none;
    }
    .hero-grid{
      display:grid;grid-template-columns:1.02fr .98fr;gap:46px;align-items:center;
    }
    .hero h1{
      margin-top:18px;font-size:clamp(34px,5vw,56px);line-height:1.13;
      letter-spacing:-.04em;color:var(--ink);
    }
    .hero h1 .grad{
      background:linear-gradient(120deg,#5c4016,var(--copper),var(--purple));
      -webkit-background-clip:text;background-clip:text;color:transparent;
    }
    .hero-desc{
      margin-top:22px;color:#50483d;font-size:18px;line-height:1.85;max-width:660px;
    }
    .hero-actions{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      min-height:48px;padding:13px 22px;border-radius:999px;
      font-weight:900;transition:var(--ease);border:1px solid transparent;
    }
    .btn-primary{
      color:#211405;background:linear-gradient(135deg,var(--gold),var(--copper));
      box-shadow:0 15px 34px rgba(179,106,85,.22);
    }
    .btn-primary:hover{transform:translateY(-3px);box-shadow:0 22px 42px rgba(179,106,85,.28)}
    .btn-secondary{
      color:var(--ink);border-color:rgba(14,107,91,.35);
      background:rgba(251,247,237,.72);
    }
    .btn-secondary:hover{background:#fff7e6;border-color:rgba(214,180,106,.65);transform:translateY(-3px)}
    .badges{
      margin-top:30px;display:grid;grid-template-columns:repeat(3,1fr);gap:12px;
    }
    .data-badge{
      padding:15px 16px;border-radius:18px;
      border:1px solid rgba(214,180,106,.28);
      background:rgba(255,252,245,.72);
      box-shadow:0 12px 30px rgba(53,39,19,.08);
    }
    .data-badge strong{display:block;color:var(--ink);font-size:20px;line-height:1}
    .data-badge span{display:block;margin-top:7px;color:var(--muted);font-size:13px;line-height:1.45}

    .hero-media{
      position:relative;border-radius:34px;padding:12px;
      background:linear-gradient(135deg,rgba(214,180,106,.55),rgba(108,77,255,.24),rgba(14,107,91,.24));
      box-shadow:var(--shadow);
    }
    .hero-photo{
      min-height:520px;border-radius:26px;overflow:hidden;position:relative;
      background:url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    }
    .hero-photo::before{
      content:"";position:absolute;inset:0;
      background:linear-gradient(180deg,rgba(7,17,14,.08),rgba(7,17,14,.72));
    }
    .float-card{
      position:absolute;left:30px;right:30px;bottom:30px;
      padding:24px;border-radius:24px;
      background:rgba(7,17,14,.86);color:#fff;
      border:1px solid rgba(214,180,106,.28);
      box-shadow:0 18px 42px rgba(0,0,0,.28);
      backdrop-filter:blur(10px);
    }
    .float-card h2{font-size:24px;line-height:1.25}
    .float-card p{margin-top:10px;color:rgba(248,243,234,.76);line-height:1.75}
    .mini-stack{
      position:absolute;right:-16px;top:34px;display:grid;gap:12px;
    }
    .mini-pill{
      min-width:156px;padding:13px 15px;border-radius:18px;
      background:rgba(251,247,237,.92);border:1px solid rgba(214,180,106,.38);
      box-shadow:0 18px 34px rgba(53,39,19,.14);
      color:var(--ink);font-weight:900;
    }
    .mini-pill span{display:block;font-size:12px;color:var(--muted);font-weight:700;margin-top:2px}

    .highlight-wrap{
      background:linear-gradient(180deg,rgba(251,247,237,.65),rgba(239,231,216,.78));
      border-top:1px solid rgba(214,180,106,.18);
      border-bottom:1px solid rgba(214,180,106,.18);
    }
    .highlight-grid{
      margin-top:34px;display:grid;grid-template-columns:1.2fr .9fr .9fr;gap:18px;
    }
    .feature-card{
      position:relative;padding:28px;border-radius:var(--radius-lg);
      background:rgba(255,252,245,.82);border:1px solid rgba(228,216,196,.92);
      box-shadow:0 14px 36px rgba(53,39,19,.08);transition:var(--ease);overflow:hidden;
    }
    .feature-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(214,180,106,.62)}
    .feature-card.large{
      grid-row:span 2;min-height:360px;color:#fff;
      background:
        linear-gradient(145deg,rgba(7,17,14,.9),rgba(14,107,91,.82)),
        url('/assets/images/coverpic/cover-1.webp') center/cover no-repeat;
    }
    .feature-card.large::after{
      content:"";position:absolute;inset:0;background:radial-gradient(circle at 80% 10%,rgba(214,180,106,.24),transparent 40%);
      pointer-events:none;
    }
    .feature-card > *{position:relative;z-index:1}
    .card-no{display:inline-flex;color:var(--gold);font-size:13px;font-weight:900;letter-spacing:.08em}
    .feature-card h3{margin-top:14px;font-size:23px;line-height:1.28;color:inherit}
    .feature-card p{margin-top:12px;color:var(--muted);line-height:1.75}
    .feature-card.large p{color:rgba(248,243,234,.78)}
    .text-link{
      margin-top:18px;display:inline-flex;gap:8px;align-items:center;
      color:#6c4a12;font-weight:900;transition:var(--ease);
    }
    .text-link:hover{color:var(--green);transform:translateX(3px)}
    .feature-card.large .text-link{color:var(--gold-2)}

    .category-band{
      padding:22px 0;background:var(--ink);color:#fff;
      border-top:1px solid rgba(214,180,106,.22);
      border-bottom:1px solid rgba(214,180,106,.22);
    }
    .category-row{
      display:flex;align-items:center;justify-content:space-between;gap:20px;flex-wrap:wrap;
    }
    .category-row p{color:rgba(248,243,234,.74);max-width:720px}
    .category-chip{
      display:inline-flex;align-items:center;gap:10px;border-radius:999px;
      padding:12px 18px;background:linear-gradient(135deg,rgba(214,180,106,.18),rgba(108,77,255,.16));
      border:1px solid rgba(214,180,106,.35);font-weight:900;color:var(--gold-2);
      transition:var(--ease);
    }
    .category-chip:hover{transform:translateY(-2px);box-shadow:var(--glow)}

    .masonry{
      margin-top:36px;display:grid;grid-template-columns:repeat(12,1fr);gap:18px;
    }
    .story-card{
      border-radius:var(--radius-lg);overflow:hidden;background:rgba(255,252,245,.86);
      border:1px solid rgba(228,216,196,.94);box-shadow:0 16px 38px rgba(53,39,19,.08);
      transition:var(--ease);
    }
    .story-card:hover{transform:translateY(-5px);box-shadow:var(--shadow-hover);border-color:rgba(214,180,106,.62)}
    .story-card.big{grid-column:span 6}
    .story-card.mid{grid-column:span 3}
    .story-card.wide{grid-column:span 4}
    .story-img{height:210px;overflow:hidden;position:relative}
    .story-card.mid .story-img{height:150px}
    .story-img img{width:100%;height:100%;object-fit:cover;transition:var(--ease)}
    .story-card:hover img{transform:scale(1.04)}
    .story-img::after{
      content:"";position:absolute;inset:0;background:linear-gradient(180deg,transparent,rgba(7,17,14,.28));
    }
    .story-body{padding:22px}
    .tag{
      display:inline-flex;padding:5px 10px;border-radius:999px;
      background:rgba(214,180,106,.16);color:#6a4c14;
      border:1px solid rgba(214,180,106,.26);font-size:13px;font-weight:900;
    }
    .story-body h3{margin-top:12px;font-size:21px;line-height:1.35;color:var(--ink)}
    .story-body p{margin-top:10px;color:var(--muted);font-size:15px;line-height:1.72}
    .meta{margin-top:14px;color:#897b67;font-size:13px;display:flex;gap:10px;flex-wrap:wrap}

    .compare{
      background:
        linear-gradient(135deg,rgba(7,17,14,.98),rgba(11,10,15,.96)),
        radial-gradient(circle at 15% 20%,rgba(214,180,106,.18),transparent 35%);
      color:#fff;position:relative;overflow:hidden;
    }
    .compare .section-title{color:#fff}
    .compare .section-lead{color:rgba(248,243,234,.72)}
    .compare-grid{margin-top:36px;display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
    .compare-card{
      padding:26px;border-radius:var(--radius-lg);
      background:linear-gradient(180deg,rgba(255,255,255,.08),rgba(255,255,255,.035));
      border:1px solid rgba(214,180,106,.22);transition:var(--ease);
    }
    .compare-card:hover{transform:translateY(-5px);border-color:rgba(214,180,106,.58);box-shadow:var(--glow)}
    .compare-card .num{color:var(--gold);font-weight:900;font-size:26px}
    .compare-card h3{margin-top:14px;font-size:22px}
    .compare-card p{margin-top:11px;color:rgba(248,243,234,.72);font-size:15px}
    .compare-card ul{margin-top:16px;list-style:none;display:grid;gap:9px}
    .compare-card li{color:rgba(248,243,234,.86);font-size:14px;position:relative;padding-left:18px}
    .compare-card li::before{content:"";position:absolute;left:0;top:.72em;width:7px;height:7px;border-radius:50%;background:var(--gold)}

    .practice-grid{
      margin-top:32px;display:grid;grid-template-columns:.95fr 1.05fr;gap:22px;align-items:stretch;
    }
    .practice-panel{
      padding:30px;border-radius:var(--radius-xl);background:rgba(255,252,245,.86);
      border:1px solid rgba(228,216,196,.92);box-shadow:var(--shadow);
    }
    .practice-panel.dark{
      background:linear-gradient(145deg,var(--ink),#12352e);color:#fff;
      border-color:rgba(214,180,106,.25);
    }
    .practice-panel h3{font-size:24px;line-height:1.3}
    .practice-panel p{margin-top:12px;color:var(--muted)}
    .practice-panel.dark p{color:rgba(248,243,234,.74)}
    .check-list{margin-top:20px;display:grid;gap:13px;list-style:none}
    .check-list li{
      display:flex;gap:11px;align-items:flex-start;color:#453d33;
    }
    .dark .check-list li{color:rgba(248,243,234,.86)}
    .check-list li::before{
      content:"";margin-top:9px;width:9px;height:9px;flex:0 0 9px;border-radius:50%;
      background:linear-gradient(135deg,var(--gold),var(--purple));box-shadow:0 0 10px rgba(214,180,106,.45);
    }

    .faq-list{margin-top:34px;display:grid;gap:14px;max-width:900px}
    .faq-item{
      border-radius:20px;background:rgba(255,252,245,.88);
      border:1px solid rgba(228,216,196,.94);overflow:hidden;box-shadow:0 12px 28px rgba(53,39,19,.06);
    }
    .faq-q{
      width:100%;display:flex;justify-content:space-between;align-items:center;gap:18px;
      padding:20px 22px;text-align:left;color:var(--ink);font-weight:900;
    }
    .faq-q span:first-child{border-left:3px solid var(--gold);padding-left:13px}
    .faq-icon{width:28px;height:28px;border-radius:50%;display:grid;place-items:center;background:rgba(214,180,106,.18);transition:var(--ease)}
    .faq-a{display:none;padding:0 24px 22px 38px;color:var(--muted);line-height:1.8}
    .faq-item.open .faq-a{display:block}
    .faq-item.open .faq-icon{transform:rotate(45deg);background:rgba(108,77,255,.16)}

    .contact{
      padding:86px 0;background:linear-gradient(180deg,var(--sand),var(--paper));
    }
    .contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:24px;align-items:stretch}
    .cta-card{
      padding:34px;border-radius:var(--radius-xl);color:#fff;
      background:
        linear-gradient(145deg,rgba(7,17,14,.94),rgba(14,107,91,.88)),
        url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
      border:1px solid rgba(214,180,106,.25);box-shadow:var(--shadow);
      position:relative;overflow:hidden;
    }
    .cta-card::after{
      content:"";position:absolute;right:-90px;bottom:-90px;width:260px;height:260px;
      background:radial-gradient(circle,rgba(214,180,106,.22),transparent 65%);
    }
    .cta-card h2{font-size:34px;line-height:1.22;position:relative;z-index:1}
    .cta-card p{margin-top:16px;color:rgba(248,243,234,.76);position:relative;z-index:1}
    .notice{
      margin-top:24px;padding:16px;border-radius:18px;
      background:rgba(255,255,255,.08);border:1px solid rgba(214,180,106,.22);
      color:rgba(248,243,234,.82);position:relative;z-index:1;font-size:14px;
    }
    .contact-form{
      padding:30px;border-radius:var(--radius-xl);background:rgba(255,252,245,.9);
      border:1px solid rgba(228,216,196,.94);box-shadow:var(--shadow);
    }
    .form-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
    .field{display:grid;gap:7px}
    .field.full{grid-column:1/-1}
    label{font-weight:800;color:var(--ink);font-size:14px}
    input,select,textarea{
      width:100%;border:1px solid rgba(214,180,106,.34);
      background:#fffaf0;color:var(--charcoal);border-radius:15px;
      padding:13px 14px;transition:var(--ease);
    }
    textarea{min-height:116px;resize:vertical}
    input:focus,select:focus,textarea:focus{
      outline:none;border-color:var(--gold);box-shadow:0 0 0 4px rgba(214,180,106,.16);background:#fffdf8;
    }
    .form-tip{margin-top:14px;color:var(--muted);font-size:13px;line-height:1.65}
    .form-actions{margin-top:18px;display:flex;gap:12px;flex-wrap:wrap}

    .site-footer{
      background:linear-gradient(180deg,var(--ink),#050807);color:#fff;
      border-top:1px solid rgba(214,180,106,.2);position:relative;
    }
    .site-footer::before{
      content:"";position:absolute;top:0;left:0;width:100%;height:2px;
      background:linear-gradient(90deg,var(--gold),var(--copper),var(--purple),var(--green));
    }
    .footer-grid{
      padding:54px 0 34px;display:grid;grid-template-columns:1.2fr .8fr 1fr;gap:34px;
    }
    .footer-logo{font-size:22px;font-weight:900;color:var(--gold-2)}
    .footer-desc{margin-top:12px;color:rgba(248,243,234,.7);max-width:380px}
    .footer-title{font-weight:900;margin-bottom:14px;color:#fff}
    .footer-links,.keyword-links{display:flex;flex-wrap:wrap;gap:10px}
    .footer-links{flex-direction:column;align-items:flex-start}
    .footer-links a,.keyword-links a{
      color:rgba(248,243,234,.72);transition:var(--ease);
    }
    .keyword-links a{
      padding:7px 11px;border-radius:999px;border:1px solid rgba(214,180,106,.18);
      background:rgba(255,255,255,.04);
    }
    .footer-links a:hover,.keyword-links a:hover{color:var(--gold-2);transform:translateX(2px)}
    .footer-bottom{
      padding:18px 0 26px;border-top:1px solid rgba(214,180,106,.14);
      display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;
      color:rgba(248,243,234,.58);font-size:13px;
    }
    .back-top{
      position:fixed;right:18px;bottom:18px;width:46px;height:46px;border-radius:50%;
      display:grid;place-items:center;background:linear-gradient(135deg,var(--gold),var(--copper));
      color:#211405;font-weight:900;box-shadow:0 12px 30px rgba(53,39,19,.18);
      opacity:0;pointer-events:none;transform:translateY(8px);transition:var(--ease);z-index:900;
    }
    .back-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}

    @media (max-width:1100px){
      .nav-menu{gap:4px}.nav-link{padding:10px 11px}
      .hero-grid{grid-template-columns:1fr;gap:32px}
      .hero-photo{min-height:430px}
      .compare-grid{grid-template-columns:repeat(2,1fr)}
      .story-card.big{grid-column:span 6}.story-card.mid,.story-card.wide{grid-column:span 6}
    }
    @media (max-width:860px){
      .nav-wrap{height:70px}
      .menu-toggle{display:flex}
      .nav-menu{
        position:absolute;left:20px;right:20px;top:82px;
        display:none;flex-direction:column;align-items:stretch;gap:8px;
        padding:16px;border-radius:22px;background:rgba(7,17,14,.98);
        border:1px solid rgba(214,180,106,.24);box-shadow:0 18px 40px rgba(0,0,0,.28);
      }
      .nav-menu.open{display:flex}
      .nav-link{border-radius:14px}
      .nav-cta{display:none}
      .highlight-grid{grid-template-columns:1fr 1fr}
      .feature-card.large{grid-column:1/-1;grid-row:auto}
      .practice-grid,.contact-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr 1fr}
    }
    @media (max-width:680px){
      .container{width:min(100% - 28px,var(--container))}
      .section,.contact{padding:58px 0}.section-sm{padding:48px 0}
      .hero{padding:50px 0 42px}
      .hero-actions .btn{width:100%}
      .badges{grid-template-columns:1fr}
      .hero-photo{min-height:360px}
      .mini-stack{position:static;margin-top:12px;grid-template-columns:1fr 1fr}
      .float-card{left:18px;right:18px;bottom:18px;padding:20px}
      .highlight-grid,.compare-grid{grid-template-columns:1fr}
      .masonry{grid-template-columns:1fr}
      .story-card.big,.story-card.mid,.story-card.wide{grid-column:1}
      .form-grid{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr}
      .footer-bottom{flex-direction:column}
    }
    @media (max-width:480px){
      body{font-size:15px}
      .brand-sub{display:none}
      .brand-mark{width:40px;height:40px}
      .hero h1{font-size:33px}
      .section-title{font-size:27px}
      .mini-stack{display:flex;overflow-x:auto;padding-bottom:4px}
      .mini-pill{min-width:150px}
      .cta-card h2{font-size:28px}
      .story-img{height:180px}
    }

/* roulang page: category1 */
:root{
      --ink:#07110E;
      --ink-2:#0B0A0F;
      --coal:#1C1B18;
      --muted:#6F6658;
      --paper:#F8F3EA;
      --sand:#EFE7D8;
      --mist:#FBF7ED;
      --line:#E4D8C4;
      --gold:#D6B46A;
      --gold-2:#E8C878;
      --copper:#B36A55;
      --purple:#6C4DFF;
      --violet:#8A78FF;
      --green:#0E6B5B;
      --success:#16866F;
      --danger:#B94A48;
      --radius-lg:30px;
      --radius-md:22px;
      --radius-sm:14px;
      --shadow:0 18px 50px rgba(53,39,19,.12);
      --shadow-hover:0 26px 70px rgba(53,39,19,.18);
      --glow:0 0 26px rgba(214,180,106,.28);
      --container:1180px;
      --ease:all .28s ease;
    }

    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"PingFang SC","Microsoft YaHei","Noto Sans SC",sans-serif;
      color:var(--coal);
      background:
        radial-gradient(circle at 18% 0%, rgba(214,180,106,.16), transparent 34%),
        linear-gradient(180deg,var(--paper) 0%, var(--mist) 48%, var(--sand) 100%);
      line-height:1.75;
      overflow-x:hidden;
    }
    a{color:inherit;text-decoration:none;transition:var(--ease)}
    img{max-width:100%;display:block}
    button,input,select,textarea{font:inherit}
    button{cursor:pointer;border:0}
    ::selection{background:rgba(214,180,106,.45);color:var(--ink)}
    :focus-visible{outline:2px solid var(--gold-2);outline-offset:4px;border-radius:10px}

    .container{width:min(var(--container), calc(100% - 40px));margin:0 auto}
    .section{padding:82px 0}
    .section-tight{padding:56px 0}
    .eyebrow{
      display:inline-flex;align-items:center;gap:9px;
      padding:7px 13px;border:1px solid rgba(214,180,106,.38);
      border-radius:999px;background:rgba(255,255,255,.62);
      color:#6C4A12;font-size:14px;font-weight:700;
      box-shadow:0 8px 28px rgba(214,180,106,.10);
    }
    .eyebrow::before{
      content:"";width:8px;height:8px;border-radius:999px;
      background:linear-gradient(135deg,var(--gold),var(--purple));
      box-shadow:0 0 16px rgba(214,180,106,.8);
    }
    h1,h2,h3,p{margin-top:0}
    h1{
      margin:18px 0 18px;
      font-size:clamp(32px,5vw,54px);
      line-height:1.14;
      letter-spacing:-.03em;
      color:var(--ink);
    }
    h2{
      margin:12px 0 14px;
      font-size:clamp(26px,3.2vw,38px);
      line-height:1.22;
      letter-spacing:-.02em;
      color:var(--ink);
    }
    h3{
      margin:0 0 10px;
      font-size:22px;
      line-height:1.35;
      color:var(--ink);
    }
    .lead{
      font-size:18px;color:var(--muted);max-width:760px;
    }
    .muted{color:var(--muted)}
    .gradient-line{
      height:2px;width:100%;
      background:linear-gradient(90deg,transparent,var(--gold),var(--copper),var(--purple),transparent);
      opacity:.8;
    }

    .topline{
      height:2px;
      background:linear-gradient(90deg,var(--gold),var(--copper),var(--purple),var(--green));
    }
    .site-header{
      position:sticky;top:0;z-index:50;
      background:linear-gradient(135deg,rgba(7,17,14,.98),rgba(11,10,15,.96));
      border-bottom:1px solid rgba(214,180,106,.20);
      box-shadow:0 14px 42px rgba(7,17,14,.28);
      backdrop-filter:blur(14px);
    }
    .nav-wrap{
      min-height:76px;display:flex;align-items:center;justify-content:space-between;gap:24px;
    }
    .brand{
      display:flex;align-items:center;gap:12px;min-width:max-content;
    }
    .brand-mark{
      width:44px;height:44px;border-radius:16px;
      display:grid;place-items:center;
      background:
        linear-gradient(145deg,rgba(214,180,106,.26),rgba(108,77,255,.10)),
        radial-gradient(circle at 35% 25%,rgba(232,200,120,.6),transparent 32%);
      border:1px solid rgba(214,180,106,.35);
      color:var(--gold-2);
      font-weight:900;letter-spacing:.02em;
      box-shadow:var(--glow);
    }
    .brand-text strong{display:block;color:#FFF5D8;font-size:20px;line-height:1.1;letter-spacing:.02em}
    .brand-text span{display:block;color:rgba(248,243,234,.66);font-size:12px;margin-top:3px}
    .nav-menu{
      display:flex;align-items:center;justify-content:center;gap:6px;
      padding:7px;border:1px solid rgba(214,180,106,.16);
      border-radius:999px;background:rgba(255,255,255,.04);
    }
    .nav-link{
      position:relative;padding:10px 14px;border-radius:999px;
      color:rgba(248,243,234,.78);font-size:14px;font-weight:700;
      white-space:nowrap;
    }
    .nav-link:hover{color:#FFF2C3;background:rgba(214,180,106,.09)}
    .nav-link.active{
      color:var(--gold-2);background:rgba(214,180,106,.11);
      text-shadow:0 0 16px rgba(232,200,120,.45);
    }
    .nav-link.active::after{
      content:"";position:absolute;left:20%;right:20%;bottom:3px;height:2px;border-radius:999px;
      background:linear-gradient(90deg,var(--gold),var(--purple));
      box-shadow:0 0 14px rgba(232,200,120,.7);
    }
    .nav-actions{display:flex;align-items:center;gap:12px}
    .nav-cta{
      padding:11px 16px;border-radius:999px;
      color:#16120A;font-weight:800;font-size:14px;
      background:linear-gradient(135deg,var(--gold-2),var(--copper));
      box-shadow:0 0 24px rgba(214,180,106,.28);
      white-space:nowrap;
    }
    .nav-cta:hover{transform:translateY(-2px);box-shadow:0 0 34px rgba(214,180,106,.42)}
    .menu-toggle{
      display:none;width:44px;height:44px;border-radius:14px;
      background:rgba(214,180,106,.10);border:1px solid rgba(214,180,106,.28);
      color:var(--gold-2);
    }
    .menu-toggle span{display:block;width:20px;height:2px;background:var(--gold-2);margin:5px auto;border-radius:2px}

    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:9px;
      padding:13px 20px;border-radius:999px;font-weight:800;
      transition:var(--ease);border:1px solid transparent;
    }
    .btn-primary{
      background:linear-gradient(135deg,var(--gold),var(--copper));
      color:#1B1309;box-shadow:0 14px 34px rgba(179,106,85,.22);
    }
    .btn-primary:hover{transform:translateY(-3px);box-shadow:0 20px 48px rgba(179,106,85,.30)}
    .btn-secondary{
      color:var(--ink);background:rgba(255,255,255,.48);
      border-color:rgba(14,107,91,.25);
    }
    .btn-secondary:hover{background:#fff;border-color:rgba(214,180,106,.55);transform:translateY(-3px)}
    .btn-dark{
      background:linear-gradient(135deg,var(--ink),#1A1730);
      color:#FFF3CF;border-color:rgba(214,180,106,.22);
    }
    .btn-dark:hover{box-shadow:var(--glow);transform:translateY(-3px)}

    .category-hero{
      position:relative;
      padding:70px 0 54px;
      overflow:hidden;
      background:
        linear-gradient(135deg,rgba(7,17,14,.96),rgba(11,10,15,.88)),
        url("/assets/images/backpic/back-2.webp") center/cover no-repeat;
      color:#fff;
    }
    .category-hero::after{
      content:"";position:absolute;inset:auto -10% -42% 30%;
      height:260px;border-radius:50%;
      background:radial-gradient(circle,rgba(214,180,106,.22),transparent 62%);
      pointer-events:none;
    }
    .hero-row{
      position:relative;z-index:1;
      display:grid;grid-template-columns:1.35fr .65fr;gap:42px;align-items:end;
    }
    .category-hero h1{color:#FFF6DE;max-width:830px}
    .category-hero .lead{color:rgba(248,243,234,.82)}
    .breadcrumb{
      display:flex;gap:8px;align-items:center;flex-wrap:wrap;
      margin-bottom:18px;color:rgba(248,243,234,.66);font-size:14px;
    }
    .breadcrumb a:hover{color:var(--gold-2)}
    .hero-badges{
      display:grid;gap:14px;
    }
    .mini-badge{
      padding:16px 18px;border-radius:20px;
      background:rgba(248,243,234,.08);
      border:1px solid rgba(214,180,106,.28);
      box-shadow:0 16px 36px rgba(0,0,0,.18);
      backdrop-filter:blur(8px);
    }
    .mini-badge .num{
      display:block;color:var(--gold-2);font-weight:900;font-size:26px;line-height:1;
    }
    .mini-badge .label{display:block;margin-top:7px;color:#FFF6DE;font-weight:800}
    .mini-badge small{display:block;margin-top:4px;color:rgba(248,243,234,.67);line-height:1.5}

    .anchor-bar{
      position:sticky;top:78px;z-index:30;
      padding:14px 0;background:rgba(248,243,234,.86);
      backdrop-filter:blur(14px);
      border-bottom:1px solid rgba(228,216,196,.78);
    }
    .anchor-scroll{
      display:flex;gap:10px;overflow:auto;padding-bottom:2px;
      scrollbar-width:none;
    }
    .anchor-scroll::-webkit-scrollbar{display:none}
    .chip{
      flex:0 0 auto;
      padding:10px 15px;border-radius:999px;
      border:1px solid rgba(214,180,106,.32);
      background:rgba(255,255,255,.62);
      color:#4C3B22;font-weight:800;font-size:14px;
    }
    .chip:hover,.chip.active{
      color:#1A1208;background:linear-gradient(135deg,rgba(232,200,120,.95),rgba(179,106,85,.76));
      border-color:transparent;box-shadow:0 10px 26px rgba(179,106,85,.18);
    }

    .feature-card{
      display:grid;grid-template-columns:1fr 1.08fr;gap:0;overflow:hidden;
      border-radius:var(--radius-lg);
      background:#fff;border:1px solid rgba(214,180,106,.26);
      box-shadow:var(--shadow);
    }
    .feature-image{
      position:relative;min-height:410px;overflow:hidden;background:#111;
    }
    .feature-image img{width:100%;height:100%;object-fit:cover;transition:var(--ease)}
    .feature-card:hover .feature-image img{transform:scale(1.04)}
    .feature-image::after{
      content:"";position:absolute;inset:0;
      background:linear-gradient(180deg,transparent,rgba(7,17,14,.62));
    }
    .feature-stamp{
      position:absolute;left:24px;bottom:24px;z-index:1;
      padding:12px 15px;border-radius:16px;color:#FFF7DF;
      background:rgba(7,17,14,.74);border:1px solid rgba(214,180,106,.34);
      backdrop-filter:blur(10px);font-weight:800;
    }
    .feature-body{padding:36px}
    .point-list{
      display:grid;gap:12px;margin:22px 0 26px;padding:0;list-style:none;
    }
    .point-list li{
      display:grid;grid-template-columns:28px 1fr;gap:10px;align-items:start;
      color:#433C33;
    }
    .point-list li::before{
      content:"";width:18px;height:18px;margin-top:5px;border-radius:999px;
      background:linear-gradient(135deg,var(--gold),var(--purple));
      box-shadow:0 0 14px rgba(214,180,106,.34);
    }

    .content-layout{
      display:grid;grid-template-columns:minmax(0,1.65fr) minmax(300px,.75fr);
      gap:28px;align-items:start;
    }
    .guide-list{display:grid;gap:18px}
    .guide-item{
      display:grid;grid-template-columns:210px minmax(0,1fr);gap:22px;
      padding:18px;border-radius:var(--radius-md);
      background:rgba(255,255,255,.72);
      border:1px solid rgba(228,216,196,.85);
      box-shadow:0 12px 34px rgba(53,39,19,.08);
      transition:var(--ease);
    }
    .guide-item:hover{
      transform:translateY(-5px);
      border-color:rgba(214,180,106,.65);
      box-shadow:var(--shadow-hover);
      background:#fff;
    }
    .guide-thumb{
      height:150px;border-radius:18px;overflow:hidden;background:var(--sand);
      position:relative;
    }
    .guide-thumb img{width:100%;height:100%;object-fit:cover;transition:var(--ease)}
    .guide-item:hover .guide-thumb img{transform:scale(1.045)}
    .guide-meta{
      display:flex;align-items:center;gap:10px;flex-wrap:wrap;
      margin-bottom:8px;font-size:13px;color:var(--muted);
    }
    .tag{
      display:inline-flex;align-items:center;padding:5px 10px;border-radius:999px;
      background:rgba(214,180,106,.16);color:#76521D;font-weight:800;
      border:1px solid rgba(214,180,106,.28);
    }
    .guide-title{font-size:21px;margin-bottom:8px}
    .guide-desc{margin:0 0 12px;color:var(--muted);font-size:15px;line-height:1.7}
    .read-link{
      display:inline-flex;align-items:center;gap:7px;color:var(--green);font-weight:900;
    }
    .read-link:hover{color:#6C4DFF;gap:11px}

    .sidebar{display:grid;gap:18px;position:sticky;top:148px}
    .side-card{
      padding:24px;border-radius:var(--radius-md);
      background:rgba(255,255,255,.72);
      border:1px solid rgba(228,216,196,.9);
      box-shadow:0 12px 34px rgba(53,39,19,.08);
    }
    .side-card.dark{
      color:#FFF6DE;
      background:linear-gradient(145deg,var(--ink),#171528);
      border-color:rgba(214,180,106,.28);
      box-shadow:0 18px 44px rgba(7,17,14,.20);
    }
    .side-card.dark h3{color:#FFF6DE}
    .keyword-cloud{display:flex;gap:9px;flex-wrap:wrap}
    .keyword-cloud a{
      padding:8px 11px;border-radius:999px;background:rgba(214,180,106,.13);
      border:1px solid rgba(214,180,106,.26);color:#5D4522;font-weight:800;font-size:14px;
    }
    .keyword-cloud a:hover{background:var(--ink);color:#FFF1C7;border-color:rgba(214,180,106,.5)}
    .side-link-list{display:grid;gap:10px;margin-top:12px}
    .side-link-list a{
      padding:12px 13px;border-radius:14px;background:rgba(248,243,234,.72);
      border:1px solid rgba(228,216,196,.82);font-weight:800;color:#342A1D;
    }
    .side-link-list a:hover{border-color:rgba(214,180,106,.65);transform:translateX(4px)}
    .notice{
      padding:12px 14px;border-radius:16px;
      background:rgba(22,134,111,.10);
      border:1px solid rgba(22,134,111,.20);
      color:#155E4F;font-size:14px;line-height:1.65;
    }

    .steps{
      display:grid;grid-template-columns:repeat(4,1fr);gap:16px;
    }
    .step-card{
      padding:24px;border-radius:var(--radius-md);
      background:linear-gradient(180deg,#fff,rgba(255,255,255,.66));
      border:1px solid rgba(228,216,196,.92);
      box-shadow:0 12px 34px rgba(53,39,19,.07);
      transition:var(--ease);
    }
    .step-card:hover{transform:translateY(-5px);border-color:rgba(214,180,106,.60);box-shadow:var(--shadow)}
    .step-no{
      display:inline-flex;width:42px;height:42px;border-radius:15px;
      align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--gold),var(--purple));
      color:#fff;font-weight:900;margin-bottom:14px;
    }
    .step-card p{margin:0;color:var(--muted);font-size:15px}

    .faq-wrap{display:grid;gap:14px}
    .faq-item{
      border-radius:20px;background:rgba(255,255,255,.76);
      border:1px solid rgba(228,216,196,.9);
      overflow:hidden;box-shadow:0 12px 32px rgba(53,39,19,.06);
    }
    .faq-question{
      width:100%;display:flex;align-items:center;justify-content:space-between;gap:18px;
      padding:20px 22px;background:transparent;color:var(--ink);
      text-align:left;font-weight:900;
    }
    .faq-question span:first-child{
      display:flex;align-items:center;gap:12px;
    }
    .faq-question span:first-child::before{
      content:"";width:4px;height:24px;border-radius:999px;
      background:linear-gradient(180deg,var(--gold),var(--purple));
    }
    .faq-icon{
      width:28px;height:28px;border-radius:999px;
      display:grid;place-items:center;background:rgba(214,180,106,.16);
      color:#6C4A12;flex:0 0 auto;transition:var(--ease);
    }
    .faq-answer{
      display:none;padding:0 22px 20px 38px;color:var(--muted);
    }
    .faq-item.open .faq-answer{display:block}
    .faq-item.open .faq-icon{transform:rotate(45deg);background:linear-gradient(135deg,var(--gold),var(--copper));color:#1A1208}

    .cta-band{
      border-radius:var(--radius-lg);
      overflow:hidden;
      display:grid;grid-template-columns:1fr .82fr;
      background:linear-gradient(135deg,var(--ink),#17122B);
      border:1px solid rgba(214,180,106,.25);
      box-shadow:0 22px 70px rgba(7,17,14,.22);
    }
    .cta-copy{padding:38px;color:#FFF6DE}
    .cta-copy h2{color:#FFF6DE}
    .cta-copy p{color:rgba(248,243,234,.74)}
    .cta-panel{
      padding:28px;background:
        linear-gradient(135deg,rgba(214,180,106,.18),rgba(108,77,255,.12)),
        rgba(255,255,255,.05);
      border-left:1px solid rgba(214,180,106,.18);
    }
    .cta-panel .panel-box{
      height:100%;border-radius:24px;padding:26px;
      background:rgba(248,243,234,.94);color:var(--coal);
      border:1px solid rgba(214,180,106,.28);
    }
    .panel-box ul{margin:14px 0 0;padding-left:20px;color:var(--muted)}
    .panel-box li{margin:8px 0}

    .site-footer{
      margin-top:76px;background:linear-gradient(135deg,var(--ink),var(--ink-2));
      color:rgba(248,243,234,.78);
      border-top:2px solid transparent;
      border-image:linear-gradient(90deg,var(--gold),var(--copper),var(--purple),var(--green)) 1;
    }
    .footer-grid{
      display:grid;grid-template-columns:1.15fr .7fr 1fr;gap:36px;
      padding:46px 0 32px;
    }
    .footer-logo{color:#FFF2C8;font-size:23px;font-weight:900;margin-bottom:10px}
    .footer-desc{margin:0;color:rgba(248,243,234,.66);max-width:430px}
    .footer-title{color:#FFF2C8;font-weight:900;margin-bottom:13px}
    .footer-links,.keyword-links{display:flex;gap:10px;flex-wrap:wrap}
    .footer-links a,.keyword-links a{
      padding:8px 10px;border-radius:999px;background:rgba(255,255,255,.05);
      border:1px solid rgba(214,180,106,.14);font-size:14px;
    }
    .footer-links a:hover,.keyword-links a:hover{
      color:#FFF2C8;border-color:rgba(214,180,106,.55);background:rgba(214,180,106,.10);
    }
    .footer-bottom{
      display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
      padding:18px 0 24px;border-top:1px solid rgba(214,180,106,.14);
      color:rgba(248,243,234,.58);font-size:13px;
    }
    .backtop{
      position:fixed;right:18px;bottom:18px;z-index:40;
      width:46px;height:46px;border-radius:999px;
      display:grid;place-items:center;
      background:linear-gradient(135deg,var(--gold),var(--copper));
      color:#1A1208;font-weight:900;box-shadow:var(--shadow);
      opacity:0;pointer-events:none;transform:translateY(12px);
    }
    .backtop.show{opacity:1;pointer-events:auto;transform:translateY(0)}
    .backtop:hover{transform:translateY(-4px)}

    @media (max-width:1024px){
      .nav-cta{display:none}
      .hero-row,.feature-card,.cta-band{grid-template-columns:1fr}
      .feature-image{min-height:330px}
      .content-layout{grid-template-columns:1fr}
      .sidebar{position:static;grid-template-columns:repeat(2,1fr)}
      .steps{grid-template-columns:repeat(2,1fr)}
    }
    @media (max-width:768px){
      .container{width:min(100% - 28px,var(--container))}
      .section{padding:58px 0}
      .nav-wrap{min-height:68px}
      .brand-text span{display:none}
      .menu-toggle{display:block}
      .nav-menu{
        position:absolute;left:14px;right:14px;top:78px;
        display:none;flex-direction:column;align-items:stretch;
        border-radius:22px;padding:12px;
        background:linear-gradient(135deg,rgba(7,17,14,.98),rgba(11,10,15,.98));
        box-shadow:0 22px 60px rgba(0,0,0,.32);
      }
      .nav-menu.open{display:flex}
      .nav-link{padding:12px 14px}
      .nav-link.active::after{left:14px;right:auto;width:42px}
      .category-hero{padding:52px 0 40px}
      .guide-item{grid-template-columns:1fr}
      .guide-thumb{height:210px}
      .sidebar{grid-template-columns:1fr}
      .footer-grid{grid-template-columns:1fr;gap:24px}
      .footer-bottom{flex-direction:column}
      .anchor-bar{top:68px}
    }
    @media (max-width:520px){
      h1{font-size:32px}
      .hero-badges{grid-template-columns:1fr}
      .steps{grid-template-columns:1fr}
      .feature-body,.cta-copy{padding:24px}
      .cta-panel{padding:18px}
      .btn{width:100%}
      .guide-title{font-size:19px}
      .faq-question{padding:18px}
      .faq-answer{padding:0 18px 18px 34px}
    }