:root{--orange:#e85d04;--orange-light:#ff7d30;--orange-pale:rgba(232,93,4,0.09);--orange-border:rgba(232,93,4,0.22);--dark:#1a1008;--dark-mid:#251509;--white:#fff;--off-white:#faf8f5;--body-bg:#f7f4f0;--text-dark:#1c1209;--text-mid:#4a3728;--text-light:#7a6255;--border:#ede8e3;--font:'Montserrat',sans-serif;--radius:10px;--radius-lg:16px;--transition:all 0.22s cubic-bezier(0.4,0,0.2,1);}
    *,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}html{scroll-behavior:smooth;}
    body{font-family:var(--font);background:var(--body-bg);color:var(--text-dark);line-height:1.7;-webkit-font-smoothing:antialiased;}
    a{color:var(--orange);text-decoration:none;}a:hover{text-decoration:underline;}
    ul,ol{padding-left:20px;}
    header{background:var(--dark);position:sticky;top:0;z-index:200;border-bottom:2px solid var(--orange);box-shadow:0 2px 24px rgba(232,93,4,0.20);}
    .header-inner{max-width:1280px;margin:0 auto;padding:0 28px;display:flex;align-items:center;justify-content:space-between;height:68px;gap:24px;}
    .logo{display:flex;align-items:center;gap:11px;flex-shrink:0;}
    .logo-icon{width:40px;height:40px;border-radius:9px;background:var(--orange);display:grid;place-items:center;font-weight:900;font-size:16px;color:white;}
    .logo-name{font-weight:800;font-size:17px;color:white;display:block;letter-spacing:-0.3px;}
    .logo-sub{font-size:9px;font-weight:600;color:var(--orange-light);letter-spacing:1.8px;text-transform:uppercase;}
    nav{display:flex;align-items:center;gap:2px;}
    nav a{font-weight:600;font-size:13px;color:rgba(255,255,255,0.75);padding:7px 13px;border-radius:7px;transition:var(--transition);text-decoration:none;}
    nav a:hover{color:white;background:rgba(255,255,255,0.08);}
    .nav-dropdown{position:relative;}.nav-dropdown>a::after{content:' ▾';font-size:9px;opacity:0.5;}
    .dropdown-menu{display:none;position:absolute;top:calc(100% + 8px);left:0;background:var(--dark-mid);border:1px solid var(--orange-border);border-radius:var(--radius);padding:6px;min-width:200px;box-shadow:0 16px 48px rgba(0,0,0,0.45);}
    .nav-dropdown:hover .dropdown-menu{display:block;}
    .dropdown-menu a{display:block;padding:8px 13px;font-size:12.5px;color:rgba(255,255,255,0.7);border-radius:7px;}
    .dropdown-menu a:hover{background:var(--orange-pale);color:var(--orange-light);}
    .header-cta{background:var(--orange);color:white!important;padding:8px 18px!important;border-radius:8px!important;font-weight:700!important;font-size:13px!important;transition:var(--transition);text-decoration:none!important;}
    .header-cta:hover{background:var(--orange-light)!important;transform:translateY(-1px);}
    .hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;}
    .hamburger span{width:22px;height:2px;background:white;border-radius:2px;}
    .mobile-menu{display:none;position:fixed;inset:0;z-index:300;background:var(--dark);flex-direction:column;padding:24px;overflow-y:auto;}
    .mobile-menu.open{display:flex;}
    .mobile-menu-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:36px;}
    .mobile-close{background:rgba(255,255,255,0.08);border:none;color:white;font-size:20px;width:38px;height:38px;border-radius:9px;cursor:pointer;display:grid;place-items:center;}
    .mobile-nav{display:flex;flex-direction:column;gap:2px;}
    .mobile-nav a{font-size:17px;font-weight:700;color:rgba(255,255,255,0.80);padding:13px 14px;border-radius:9px;transition:var(--transition);text-decoration:none;}
    .mobile-nav a:hover{background:rgba(232,93,4,0.12);color:var(--orange-light);}
    /* Page layout */
    .page-hero{background:var(--dark);padding:56px 0 48px;border-bottom:2px solid var(--orange);}
    .page-hero-inner{max-width:900px;margin:0 auto;padding:0 28px;}
    .breadcrumb{display:flex;align-items:center;gap:8px;margin-bottom:20px;flex-wrap:wrap;}
    .breadcrumb a{font-size:12px;font-weight:600;color:rgba(255,255,255,0.40);text-decoration:none;}
    .breadcrumb a:hover{color:var(--orange-light);}
    .breadcrumb span{font-size:12px;color:rgba(255,255,255,0.20);}
    .breadcrumb .current{font-size:12px;color:var(--orange-light);font-weight:600;}
    .page-hero h1{font-size:clamp(24px,3.5vw,40px);font-weight:900;color:white;letter-spacing:-0.8px;margin-bottom:10px;}
    .page-hero p{font-size:14px;color:rgba(255,255,255,0.50);}
    .page-hero .updated{font-size:12px;color:rgba(255,255,255,0.35);margin-top:6px;}
    /* Doc layout */
    .doc-wrap{max-width:900px;margin:0 auto;padding:56px 28px 96px;display:grid;grid-template-columns:220px 1fr;gap:48px;align-items:start;}
    .doc-toc{position:sticky;top:88px;}
    .toc-title{font-size:11px;font-weight:800;color:var(--text-light);letter-spacing:1.5px;text-transform:uppercase;margin-bottom:14px;}
    .toc-list{display:flex;flex-direction:column;gap:3px;}
    .toc-list a{font-size:12.5px;font-weight:600;color:var(--text-light);padding:6px 10px;border-radius:7px;display:block;transition:var(--transition);text-decoration:none;border-left:2px solid transparent;}
    .toc-list a:hover{color:var(--orange);background:var(--orange-pale);border-left-color:var(--orange);}
    .doc-content h2{font-size:20px;font-weight:900;color:var(--text-dark);letter-spacing:-0.3px;margin-bottom:12px;padding-top:40px;margin-top:40px;border-top:1px solid var(--border);}
    .doc-content h2:first-child{border-top:none;padding-top:0;margin-top:0;}
    .doc-content h3{font-size:15px;font-weight:800;color:var(--text-dark);margin-bottom:8px;margin-top:20px;}
    .doc-content p{font-size:14px;color:var(--text-mid);line-height:1.78;margin-bottom:14px;}
    .doc-content ul,ol{font-size:14px;color:var(--text-mid);line-height:1.78;margin-bottom:14px;}
    .doc-content li{margin-bottom:6px;}
    .doc-content strong{color:var(--text-dark);font-weight:700;}
    .doc-content .notice{background:var(--orange-pale);border:1px solid var(--orange-border);border-radius:var(--radius);padding:14px 16px;font-size:13.5px;color:var(--text-mid);margin-bottom:20px;}
    .doc-content .notice strong{color:var(--orange);}
    footer{background:var(--dark-mid);border-top:2px solid var(--orange);}
    .footer-bottom-inner{max-width:1280px;margin:0 auto;padding:20px 28px;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;}
    .footer-bottom-inner span{font-size:12px;color:rgba(255,255,255,0.35);}
    .footer-bottom-inner a{color:var(--orange-light);}
    .back-top{width:32px;height:32px;border-radius:7px;background:var(--orange);display:grid;place-items:center;color:white;font-size:14px;transition:var(--transition);text-decoration:none;}
    .back-top:hover{background:var(--orange-light);transform:translateY(-2px);}
    @media(max-width:900px){nav,.header-cta{display:none;}.hamburger{display:flex;}.doc-wrap{grid-template-columns:1fr;}.doc-toc{display:none;}}