:root{--blue-950:#081f3d;--blue-900:#0e3a6b;--blue-800:#12508f;--blue-700:#1663b3;--blue-50:#eef4fc;--amber-500:#f59e0b;--amber-600:#d97706;--slate-900:#0f172a;--slate-700:#334155;--slate-500:#64748b;--slate-200:#e2e8f0;--slate-100:#f1f5f9;--slate-50:#f8fafc;--white:#fff;--radius:10px;--shadow:0 1px 3px #081f3d14, 0 4px 14px #081f3d0f;--font:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font);color:var(--slate-700);background:var(--white);margin:0;font-size:16px;line-height:1.7}h1,h2,h3,h4{color:var(--slate-900);margin:0 0 .6em;font-weight:700;line-height:1.35}h1{letter-spacing:-.01em;font-size:2.1rem}h2{margin-top:2.2em;font-size:1.5rem}h3{margin-top:1.6em;font-size:1.2rem}p{margin:0 0 1em}a{color:var(--blue-700);text-decoration:none}a:hover{text-decoration:underline}img,svg{max-width:100%;height:auto}.container{max-width:1140px;margin:0 auto;padding:0 20px}.section{padding:56px 0}.section-alt{background:var(--slate-50)}.site-header{z-index:50;border-bottom:1px solid var(--slate-200);backdrop-filter:saturate(1.2);background:#fffffff7;position:sticky;top:0}.header-inner{align-items:center;gap:24px;height:68px;display:flex}.brand{flex-shrink:0;align-items:center;gap:10px;display:flex}.brand:hover{text-decoration:none}.brand-mark{background:var(--blue-900);color:#fff;letter-spacing:-.5px;border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;font-size:15px;font-weight:800;display:inline-flex}.brand-mark:after{content:"";position:absolute}.brand-name{line-height:1.25}.brand-name strong{color:var(--blue-900);font-size:16px;display:block}.brand-name span{color:var(--slate-500);font-size:12px}.main-nav{align-items:center;gap:4px;margin-left:auto;display:flex}.main-nav a{color:var(--slate-700);white-space:nowrap;border-radius:6px;padding:8px 12px;font-size:14.5px;font-weight:500}.main-nav a:hover{background:var(--slate-100);color:var(--blue-900);text-decoration:none}.main-nav a.nav-cta{background:var(--amber-500);color:var(--blue-950);margin-left:8px;padding:9px 18px;font-weight:700}.main-nav a.nav-cta:hover{background:var(--amber-600);color:#fff}.lang-switch{border:1px solid var(--slate-200);border-radius:6px;flex-shrink:0;display:flex;overflow:hidden}.lang-switch a{color:var(--slate-500);padding:6px 12px;font-size:13px;font-weight:600}.lang-switch a.active{background:var(--blue-900);color:#fff}.lang-switch a:hover{text-decoration:none}.nav-toggle{display:none}.hero{background:var(--blue-950);color:#dbe7f5;padding:72px 0 64px;position:relative;overflow:hidden}.hero:before{content:"";pointer-events:none;background:radial-gradient(600px 300px at 85% 10%,#1663b359,#0000 70%),radial-gradient(500px 260px at 10% 90%,#f59e0b1f,#0000 70%);position:absolute;inset:0}.hero .container{position:relative}.hero h1{color:#fff;max-width:16em;font-size:2.5rem}.hero p.lead{color:#b9cbe3;max-width:44em;font-size:1.15rem}.hero-ctas{flex-wrap:wrap;gap:12px;margin-top:24px;display:flex}.btn{cursor:pointer;text-align:center;border:1px solid #0000;border-radius:8px;padding:12px 26px;font-size:15px;font-weight:700;display:inline-block}.btn:hover{text-decoration:none}.btn-amber{background:var(--amber-500);color:var(--blue-950)}.btn-amber:hover{background:var(--amber-600);color:#fff}.btn-outline{color:#fff;border-color:#fff6}.btn-outline:hover{background:#ffffff14;border-color:#fff}.btn-blue{background:var(--blue-800);color:#fff}.btn-blue:hover{background:var(--blue-900)}.btn-ghost{border-color:var(--slate-200);color:var(--blue-900);background:#fff}.btn-ghost:hover{border-color:var(--blue-700)}.card-grid{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;display:grid}.card{border:1px solid var(--slate-200);border-radius:var(--radius);box-shadow:var(--shadow);background:#fff;flex-direction:column;padding:26px;display:flex}.card:hover{border-color:var(--blue-700)}.card h3{margin-top:0;font-size:1.15rem}.card h3 a{color:var(--slate-900)}.card p{color:var(--slate-500);flex:1;font-size:14.5px}.card .card-link{margin-top:8px;font-size:14.5px;font-weight:700}.card-icon{background:var(--blue-50);width:44px;height:44px;color:var(--blue-800);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;margin-bottom:14px;font-size:22px;font-weight:700;display:inline-flex}.table-wrap{border:1px solid var(--slate-200);border-radius:var(--radius);margin:1.4em 0;overflow-x:auto}table{border-collapse:collapse;background:#fff;width:100%;font-size:14.5px}th,td{text-align:left;border-bottom:1px solid var(--slate-200);padding:12px 14px}thead th{background:var(--blue-900);color:#fff;white-space:nowrap;font-size:13.5px;font-weight:600}tbody tr:nth-child(2n){background:var(--slate-50)}tbody tr:hover{background:var(--blue-50)}.sample-note{color:#92400e;background:#fffbeb;border:1px solid #fde68a;border-radius:8px;margin:1.2em 0;padding:12px 16px;font-size:14px}.ai-summary{background:var(--blue-50);border-left:4px solid var(--blue-700);border-radius:0 8px 8px 0;margin:1.6em 0;padding:16px 20px;font-size:15px}.ai-summary strong{color:var(--blue-900)}.article-meta{color:var(--slate-500);margin-bottom:1.4em;font-size:13.5px}.article-body{max-width:800px}.article-body table{font-size:14px}.tag{background:var(--slate-100);color:var(--slate-700);border-radius:20px;margin-right:6px;padding:3px 10px;font-size:12.5px;display:inline-block}.faq-item{border-bottom:1px solid var(--slate-200);padding:18px 0}.faq-item h3{color:var(--blue-900);margin:0 0 8px;font-size:1.08rem}.faq-item p{margin:0;font-size:15px}.related-links{background:var(--slate-50);border-radius:var(--radius);margin-top:2.4em;padding:20px 24px}.related-links h3{margin-top:0;font-size:1.05rem}.related-links ul{margin:0;padding-left:20px}.breadcrumbs{color:var(--slate-500);margin:20px 0 0;font-size:13.5px}.breadcrumbs ol{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.breadcrumbs li:after{content:"›";color:var(--slate-200);margin-left:8px}.breadcrumbs li:last-child:after{content:""}.form-grid{gap:16px;max-width:640px;display:grid}.form-row{grid-template-columns:1fr 1fr;gap:16px;display:grid}.field label{color:var(--slate-900);margin-bottom:6px;font-size:14px;font-weight:600;display:block}.field input,.field select,.field textarea{border:1px solid var(--slate-200);width:100%;font-family:var(--font);background:#fff;border-radius:8px;padding:11px 14px;font-size:15px}.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--blue-700);border-color:var(--blue-700)}.field textarea{resize:vertical;min-height:120px}.stock-strip{background:var(--blue-900);color:#dbe7f5;border-radius:var(--radius);flex-wrap:wrap;align-items:center;gap:20px;padding:26px 30px;display:flex}.stock-strip strong{color:#fff;font-size:1.1rem}.stock-strip .btn{margin-left:auto}.brand-wall{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;display:grid}.brand-card{border:1px solid var(--slate-200);border-radius:var(--radius);background:#fff;padding:24px}.brand-card h3{color:var(--blue-900);margin:0 0 6px;font-size:1.1rem}.brand-card p{color:var(--slate-500);margin:0;font-size:14px}.brand-initial{background:var(--blue-900);color:#fff;border-radius:10px;justify-content:center;align-items:center;width:46px;height:46px;margin-bottom:12px;font-size:18px;font-weight:800;display:inline-flex}.site-footer{background:var(--blue-950);color:#9db2cc;margin-top:0}.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;padding:52px 0 36px;display:grid}.site-footer h4{color:#fff;text-transform:uppercase;letter-spacing:.06em;margin-bottom:14px;font-size:14px}.site-footer ul{margin:0;padding:0;list-style:none}.site-footer li{margin-bottom:8px;font-size:14px}.site-footer a{color:#9db2cc}.site-footer a:hover{color:#fff}.footer-bottom{border-top:1px solid #ffffff1a;flex-wrap:wrap;justify-content:space-between;gap:16px;padding:18px 0;font-size:13px;display:flex}.footer-brand strong{color:#fff;margin-bottom:8px;font-size:16px;display:block}.footer-brand p{max-width:30em;font-size:14px}.cta-band{background:var(--blue-50);border-radius:var(--radius);text-align:center;margin:48px 0 0;padding:40px}.cta-band h2{margin-top:0}.cta-band p{color:var(--slate-500);max-width:44em;margin:0 auto 20px}.def-lead{background:var(--slate-50);border-radius:var(--radius);margin:1.4em 0;padding:18px 22px;font-size:1.08rem}.def-lead strong{color:var(--blue-900)}.steps{counter-reset:step;margin:1.6em 0;padding:0;list-style:none}.steps li{counter-increment:step;padding:0 0 22px 56px;position:relative}.steps li:before{content:counter(step);background:var(--blue-900);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:38px;height:38px;font-weight:700;display:inline-flex;position:absolute;top:2px;left:0}.steps li strong{color:var(--slate-900)}@media (width<=900px){.footer-grid{grid-template-columns:1fr 1fr}.main-nav{border-bottom:1px solid var(--slate-200);box-shadow:var(--shadow);background:#fff;flex-direction:column;align-items:stretch;padding:12px 20px 20px;display:none;position:absolute;top:68px;left:0;right:0}.main-nav.open{display:flex}.main-nav a{padding:10px 4px}.nav-toggle{border:1px solid var(--slate-200);cursor:pointer;color:var(--blue-900);background:0 0;border-radius:8px;margin-left:auto;padding:8px 12px;font-size:16px;display:inline-flex}.lang-switch{margin-left:0}.header-inner{gap:12px}h1{font-size:1.7rem}.hero h1{font-size:2rem}.form-row{grid-template-columns:1fr}}@media (width<=560px){.footer-grid{grid-template-columns:1fr}.section{padding:40px 0}}