:root{--navy-900: #071526;--navy-800: #0b1f38;--navy-700: #12325a;--navy-600: #1b4a82;--sign: #ffc629;--sign-deep: #e5a800;--sign-soft: #fff4cc;--paper: #f7f5ef;--card: #ffffff;--ink: #0f1a2a;--ink-2: #3c4a5e;--ink-3: #6b7789;--line: #e3dfd3;--line-2: #d3cdbd;--go: #12a150;--go-soft: #e3f6ea;--warn: #d64545;--warn-soft: #fdeaea;--radius: 14px;--radius-sm: 8px;--shadow: 0 1px 2px rgba(7, 21, 38, .06), 0 6px 20px rgba(7, 21, 38, .06);--shadow-lg: 0 10px 40px rgba(7, 21, 38, .14);--font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans CJK SC", "Source Han Sans SC", "Helvetica Neue", Arial, sans-serif;--mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;--wrap: 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solid var(--line)}.prose code{padding:1px 6px;border-radius:5px;background:#eef2f8;font-size:.9em}.prose pre{padding:14px;border-radius:10px;background:var(--navy-900);color:#e9eef7;overflow-x:auto}.prose pre code{background:none;padding:0}.article-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:40px;align-items:start}.aside-sticky{position:sticky;top:130px;display:grid;gap:16px}@media(max-width:980px){.article-grid{grid-template-columns:minmax(0,1fr)}.aside-sticky{position:static}}.faq{display:grid;gap:12px}.faq details{background:#fff;border:1px solid var(--line);border-radius:12px}.faq summary{list-style:none;display:flex;gap:12px;align-items:flex-start;padding:16px 18px;cursor:pointer;font-weight:700;font-size:16px}.faq summary::-webkit-details-marker{display:none}.faq summary:before{content:"Q";flex-shrink:0;width:24px;height:24px;border-radius:6px;background:var(--navy-900);color:var(--sign);display:grid;place-items:center;font-family:var(--mono);font-size:13px;margin-top:1px}.faq .a{display:flex;gap:12px;padding:0 18px 16px;color:var(--ink-2);font-size:15px}.faq .a:before{content:"A";flex-shrink:0;width:24px;height:24px;border-radius:6px;background:var(--sign);color:var(--navy-900);display:grid;place-items:center;font-family:var(--mono);font-size:13px;font-weight:700}.promo{padding:20px;border-radius:var(--radius);background:var(--navy-900);color:#fff;position:relative;overflow:hidden}.promo:after{content:"";position:absolute;right:-40px;top:-40px;width:140px;height:140px;border-radius:50%;background:#ffc62924}.promo-head{display:flex;align-items:center;gap:10px}.promo-head img{width:40px;height:40px;border-radius:10px;background:#fff}.promo h3{font-size:18px}.promo p{margin-top:8px;font-size:14px;color:#ffffffbf}.promo ul{margin:10px 0 0;padding-left:18px;font-size:13.5px;color:#ffffffd9}.promo .coupon{margin-top:14px;border-color:var(--sign)}.promo .btn{width:100%;margin-top:12px}.toc{padding:16px 18px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);font-size:14px}.toc h3{font-size:15px}.toc p{font-size:12.5px;color:var(--ink-3);margin-top:2px}.toc ol{margin:10px 0 0;padding-left:18px}.toc li{margin:4px 0}.cta-band{background:var(--sign);color:var(--navy-900)}.cta-band .wrap{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-top:28px;padding-bottom:28px;flex-wrap:wrap}.cta-band h2{font-size:22px}.cta-band p{margin-top:4px;font-size:15px}.notice{padding:14px 16px;border-radius:10px;background:#fff;border:1px solid var(--line);font-size:13.5px;color:var(--ink-3)}.notice.warn{background:var(--warn-soft);border-color:#f3c7c7;color:#8a2a2a}.float-cta{position:fixed;left:12px;right:12px;bottom:12px;z-index:40;display:none;align-items:center;gap:10px;padding:10px 12px;border-radius:14px;background:var(--navy-900);color:#fff;box-shadow:var(--shadow-lg)}.float-cta img{width:34px;height:34px;border-radius:8px;background:#fff}.float-cta div{flex:1;min-width:0;font-size:13px;line-height:1.4}.float-cta b{display:block;font-size:14px}.float-cta .btn{padding:8px 14px;font-size:14px}@media(max-width:760px){.float-cta{display:flex}body{padding-bottom:80px}}.site-footer{background:var(--navy-900);color:#ffffffb3;padding:48px 0 28px;font-size:14px}.ft-grid{display:grid;grid-template-columns:1.4fr repeat(4,1fr);gap:28px}.ft-grid h3{color:#fff;font-size:15px;margin-bottom:4px}.ft-grid .ft-desc{font-size:12.5px;color:#ffffff73;margin-bottom:10px}.ft-grid ul{list-style:none;margin:0;padding:0;display:grid;gap:6px}.ft-grid a{color:#ffffffbf}.ft-grid a:hover{color:var(--sign)}.ft-bottom{margin-top:36px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;font-size:12.5px;color:#ffffff73}@media(max-width:900px){.ft-grid{grid-template-columns:1fr 1fr}}.search-dlg{width:min(640px,calc(100% - 24px));max-height:80vh;padding:0;border:0;border-radius:16px;box-shadow:var(--shadow-lg)}.search-dlg::backdrop{background:#07152699}.search-dlg .sd-head{padding:16px 18px 6px}.search-dlg .sd-head strong{font-size:17px}.search-dlg .sd-head p{font-size:13px;color:var(--ink-3)}.search-dlg input{width:calc(100% - 36px);margin:8px 18px;padding:12px 14px;border:1.5px solid var(--line-2);border-radius:10px;font:inherit}.search-dlg input:focus{outline:none;border-color:var(--sign-deep)}.sd-results{max-height:55vh;overflow-y:auto;padding:0 10px 12px}.sd-results a{display:block;padding:10px;border-radius:8px;color:var(--ink)}.sd-results a:hover,.sd-results a:focus{background:var(--sign-soft);text-decoration:none}.sd-results a small{display:block;color:var(--ink-3);font-size:12.5px}.sd-empty{padding:14px;color:var(--ink-3);font-size:14px}.pros-cons{display:grid;grid-template-columns:1fr 1fr;gap:16px}.pros-cons>div{padding:18px;border-radius:var(--radius);background:#fff;border:1px solid var(--line)}.pros-cons h3{font-size:16px}.pros-cons ul{margin:10px 0 0;padding-left:18px;font-size:14.5px}.pros-cons .pros h3{color:var(--go)}.pros-cons .cons h3{color:var(--warn)}@media(max-width:700px){.pros-cons{grid-template-columns:1fr}}.shots{display:grid;grid-template-columns:1fr 1fr;gap:16px}.shots figure{margin:0}.shots figcaption{margin-top:6px;font-size:13px;color:var(--ink-3)}@media(max-width:700px){.shots{grid-template-columns:1fr}}