:root{--kw-bg: #ffffff;--kw-surface: #f8fafc;--kw-surface-2: #f1f5f9;--kw-text: #1e293b;--kw-muted: rgba(30, 41, 59, .72);--kw-muted-2: rgba(30, 41, 59, .56);--kw-border: rgba(30, 41, 59, .12);--kw-border-2: rgba(30, 41, 59, .18);--kw-brand: #0ea5e9;--kw-brand-dark: #0369a1;--kw-glow: rgba(14, 165, 233, .18);--kw-radius: 18px;--kw-ring: rgba(14, 165, 233, .28)}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;min-width:320px;background:var(--kw-bg);color:var(--kw-text);font-family:Plus Jakarta Sans,-apple-system,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif;line-height:1.7;overflow-x:hidden}a{color:var(--kw-brand-dark);text-underline-offset:3px}a:hover{color:var(--kw-brand)}img{max-width:100%;height:auto}.kw-container{width:min(1080px,calc(100% - 40px));margin:0 auto}.kw-header{position:sticky;top:0;z-index:20;background:#ffffffeb;backdrop-filter:blur(12px);border-bottom:1px solid 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var(--kw-border);border-radius:var(--kw-radius);font-size:.9rem;color:var(--kw-muted)}.kw-badges i{color:var(--kw-brand);margin-right:6px}.kw-section{padding:44px 0 0}.kw-section h2{margin:0 0 14px;font-size:1.42rem;font-weight:700;line-height:1.3}.kw-section h3{margin:26px 0 8px;font-size:1.06rem;font-weight:700}.kw-section h4{margin:18px 0 6px;font-size:.98rem;font-weight:700;color:var(--kw-text)}.kw-section p{margin:0 0 14px;color:var(--kw-muted)}.kw-section ul,.kw-section ol{margin:0 0 16px;padding-left:1.3rem;color:var(--kw-muted)}.kw-section li+li{margin-top:7px}.kw-section strong{color:var(--kw-text)}.kw-grid{display:grid;gap:16px;margin:20px 0 8px}.kw-grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}.kw-grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}.kw-card{padding:20px 22px;background:var(--kw-surface);border:1px solid var(--kw-border);border-radius:var(--kw-radius)}.kw-card h3{margin:0 0 8px;font-size:1.02rem}.kw-card p{margin:0;font-size:.92rem}.kw-card 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18px;color:var(--kw-muted)}.kw-footer{margin-top:56px;border-top:1px solid var(--kw-border);background:var(--kw-surface)}.kw-footer__inner{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:12px 22px;padding:26px 0 32px;color:var(--kw-muted-2);font-size:.86rem}.kw-footer__inner nav{display:flex;flex-wrap:wrap;gap:16px}.kw-footer__inner a{color:var(--kw-muted);text-decoration:none}.kw-footer__inner a:hover{color:var(--kw-brand-dark)}@media(max-width:860px){.kw-grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:720px){.ip-tool__grid{grid-template-columns:1fr}}@media(max-width:640px){.kw-container{width:min(100% - 28px,1080px)}.kw-header__inner{min-height:62px}.kw-nav{gap:14px;font-size:.86rem}.kw-nav a:not(.kw-btn){display:none}.kw-grid--2,.kw-grid--3{grid-template-columns:1fr}.kw-table{display:block;overflow-x:auto}.kw-cta{padding:24px 20px}}