:root{--bg:#f6f9fe;--surface:#fff;--surface2:#eef5ff;--ink:#10233f;--muted:#60718a;--line:#dfe9f7;--blue:#1769e0;--blue2:#21bff3;--navy:#08152f;--green:#16a085;--orange:#f59e0b;--radius:22px;--shadow:0 20px 50px rgba(26,75,141,.10)}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",Arial,sans-serif;background:linear-gradient(180deg,#f8fbff 0,#f4f8fd 55%,#fff 100%);color:var(--ink);line-height:1.8}a{color:inherit;text-decoration:none}img{max-width:100%}.wrap{max-width:1180px;margin:auto;padding:0 28px}.topbar{font-size:13px;color:#d7e5ff;background:#07162f}.topbar .wrap{display:flex;justify-content:space-between;padding-top:7px;padding-bottom:7px}.header{position:sticky;top:0;z-index:20;background:rgba(255,255,255,.90);backdrop-filter:blur(18px);border-bottom:1px solid rgba(213,226,244,.8)}.headerin{height:72px;display:flex;align-items:center;gap:30px}.brand{display:flex;align-items:center;gap:12px;font-weight:800;white-space:nowrap}.brandmark{width:39px;height:39px;border-radius:12px;object-fit:cover;box-shadow:0 8px 22px rgba(25,106,224,.18)}.brand small{display:block;font-size:11px;color:var(--muted);letter-spacing:.07em;font-weight:600;line-height:1}.nav{display:flex;align-items:center;gap:5px;margin-left:auto}.nav a{padding:9px 13px;border-radius:10px;color:#40546f;font-size:14px;font-weight:650}.nav a:hover,.nav a.active{background:#edf5ff;color:var(--blue)}.headcta{padding:10px 16px;border-radius:11px;background:linear-gradient(135deg,var(--blue),#2caeea);color:#fff!important;box-shadow:0 8px 24px rgba(23,105,224,.2)}
.hero{position:relative;overflow:hidden;padding:88px 0 70px;background:radial-gradient(circle at 80% 15%,rgba(32,190,244,.22),transparent 24%),radial-gradient(circle at 10% 40%,rgba(23,105,224,.13),transparent 22%)}.hero:after{content:"";position:absolute;right:-100px;top:20px;width:420px;height:420px;border:1px solid rgba(23,105,224,.11);border-radius:50%;box-shadow:0 0 0 70px rgba(23,105,224,.025),0 0 0 140px rgba(23,105,224,.018)}.heroGrid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center;position:relative;z-index:2}.eyebrow{display:inline-flex;gap:8px;align-items:center;padding:7px 12px;background:#eaf3ff;border:1px solid #d7e9ff;border-radius:999px;color:var(--blue);font-size:13px;font-weight:750}.hero h1{font-size:52px;line-height:1.15;letter-spacing:-.04em;margin:18px 0 18px}.hero h1 .grad{background:linear-gradient(95deg,#1769e0,#24b9ed);-webkit-background-clip:text;color:transparent}.hero p{font-size:18px;color:var(--muted);max-width:720px;margin:0 0 28px}.actions{display:flex;flex-wrap:wrap;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 17px;border-radius:12px;font-weight:750;font-size:14px;border:1px solid #d7e5f7;background:#fff}.btn.primary{border:0;background:linear-gradient(135deg,#1769e0,#24b9ed);color:#fff;box-shadow:0 12px 30px rgba(23,105,224,.22)}.searchbox{margin-top:24px;display:flex;align-items:center;gap:10px;max-width:640px;background:#fff;border:1px solid #dbe8f7;border-radius:16px;padding:8px 10px;box-shadow:0 15px 35px rgba(22,65,120,.08)}.searchbox input{border:0;outline:0;flex:1;padding:8px 9px;font-size:15px;background:transparent}.searchhint{font-size:12px;color:#8696aa}.heroVisual{position:relative;min-height:390px}.glass{position:absolute;background:rgba(255,255,255,.74);border:1px solid rgba(255,255,255,.95);backdrop-filter:blur(16px);box-shadow:var(--shadow);border-radius:26px}.maincard{inset:14px 10px 24px 45px;padding:28px;display:flex;flex-direction:column}.visualtitle{font-size:14px;color:var(--muted);margin-bottom:10px}.issue{display:flex;align-items:center;gap:13px;padding:14px 12px;border-radius:15px;margin:4px 0;background:#f8fbff;border:1px solid #edf3fb}.ico{width:38px;height:38px;border-radius:12px;display:grid;place-items:center;background:linear-gradient(135deg,#e7f0ff,#e7fbff);color:var(--blue);font-weight:900}.issue b{display:block;font-size:14px}.issue span{font-size:12px;color:var(--muted)}.floatbadge{right:-12px;top:58px;padding:12px 15px;border-radius:16px;font-size:13px;color:#1769e0}.floatbadge.bottom{right:18px;top:auto;bottom:2px;color:#087b66}.section{padding:74px 0}.section h2{font-size:34px;line-height:1.25;margin:0 0 12px;letter-spacing:-.02em}.lead{color:var(--muted);max-width:760px;margin:0 0 30px}.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 8px 28px rgba(22,65,120,.05);transition:.22s}.card{transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:#cfe0f4}.card .tag{font-size:12px;color:var(--blue);font-weight:800}.card h3{font-size:18px;line-height:1.45;margin:8px 0}.card p{color:var(--muted);font-size:14px;margin:0}.card .go{margin-top:18px;font-size:13px;color:var(--blue);font-weight:800}.categoryIcon{width:46px;height:46px;border-radius:14px;background:linear-gradient(135deg,#ecf4ff,#ebfbff);display:grid;place-items:center;margin-bottom:15px;color:var(--blue);font-size:21px}.soft{background:linear-gradient(180deg,#eef6ff,#f8fbff);border-top:1px solid #e6eff9;border-bottom:1px solid #e6eff9}.strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.stat{padding:20px;border-radius:18px;background:#fff;border:1px solid var(--line)}.stat b{font-size:26px;display:block}.stat span{font-size:13px;color:var(--muted)}
.articleHero{padding:58px 0 34px;background:linear-gradient(180deg,#f4f9ff,#fff);border-bottom:1px solid #e7eef8}.breadcrumbs{font-size:13px;color:#7b8da5;margin-bottom:15px}.breadcrumbs a{color:#4e6c92}.articleHero h1{font-size:42px;line-height:1.25;letter-spacing:-.025em;max-width:900px;margin:10px 0 16px}.dek{font-size:18px;color:var(--muted);max-width:860px}.articleMeta{display:flex;flex-wrap:wrap;gap:10px;margin-top:19px;font-size:12px;color:#6d8099}.pill{padding:5px 10px;border-radius:999px;background:#edf5ff;color:#2a6dc4;font-weight:750}.articleLayout{display:grid;grid-template-columns:minmax(0,760px) 300px;gap:46px;align-items:start;padding:50px 0 75px}.article h2{font-size:26px;line-height:1.35;margin:38px 0 13px}.article p{font-size:16px;color:#344861;margin:0 0 15px}.answerbox{position:relative;overflow:hidden;padding:20px 22px;border-radius:17px;background:linear-gradient(135deg,#edf6ff,#f3fbff);border:1px solid #d8e9fb;margin-bottom:30px}.answerbox b{display:block;color:var(--blue);font-size:13px;margin-bottom:6px}.answerbox p{margin:0;font-size:16px;color:#263e5b}.sectionblock{padding-bottom:20px;border-bottom:1px solid #edf1f6}.tip{border-left:4px solid var(--blue);background:#f5f9ff;padding:16px 18px;border-radius:0 14px 14px 0;margin:25px 0;color:#3f5570;font-size:14px}.toc{position:sticky;top:96px;border:1px solid var(--line);background:#fff;border-radius:20px;padding:20px;box-shadow:0 10px 30px rgba(22,65,120,.05)}.toc b{display:block;font-size:14px;margin-bottom:11px}.toc a{display:block;font-size:13px;color:#647893;padding:7px 0;border-left:2px solid #e3eaf3;padding-left:11px}.toc a:hover{color:var(--blue);border-color:var(--blue)}.officialbox{margin-top:18px;padding:19px;border-radius:18px;background:linear-gradient(145deg,#0c2043,#0b2f5e);color:white}.officialbox p{font-size:12px;color:#cbdaf0;line-height:1.6}.officialbox a{display:inline-block;margin-top:8px;background:#fff;color:#155dbb;padding:8px 11px;border-radius:10px;font-size:12px;font-weight:800}.faqItem{border:1px solid var(--line);border-radius:16px;padding:18px 20px;margin:11px 0;background:#fff}.faqItem b{display:block;margin-bottom:6px}.faqItem p{margin:0;font-size:14px}.related{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin-top:18px}.related a{padding:16px;border:1px solid var(--line);border-radius:15px;background:#fff;font-size:13px;font-weight:700}.footer{background:#08152f;color:#d5e2f2;padding:55px 0 24px}.footgrid{display:grid;grid-template-columns:1.3fr repeat(3,1fr);gap:36px}.footer h4{color:#fff;margin:0 0 12px}.footer a{display:block;font-size:13px;color:#a9bbd4;margin:8px 0}.footer p{font-size:13px;color:#9fb1ca;max-width:440px}.copyright{border-top:1px solid #183153;margin-top:36px;padding-top:20px;color:#7e94af;font-size:12px}.notice{margin-top:25px;font-size:12px;color:#8091a7}.mobileMenu{display:none}
@media(max-width:950px){.nav{display:none}.heroGrid{grid-template-columns:1fr}.heroVisual{display:none}.grid{grid-template-columns:repeat(2,1fr)}.articleLayout{grid-template-columns:1fr}.toc{position:static;order:-1}.footgrid{grid-template-columns:1fr 1fr}.strip{grid-template-columns:1fr 1fr}.articleHero h1{font-size:36px}.hero h1{font-size:44px}.mobileMenu{display:block;margin-left:auto;font-size:22px}}
@media(max-width:640px){.wrap{padding:0 18px}.topbar{display:none}.headerin{height:64px}.brand small{display:none}.headcta{display:none}.hero{padding:58px 0 48px}.hero h1{font-size:38px}.hero p{font-size:16px}.searchhint{display:none}.section{padding:52px 0}.section h2{font-size:28px}.grid,.strip,.related,.footgrid{grid-template-columns:1fr}.articleHero{padding:42px 0 26px}.articleHero h1{font-size:31px}.dek{font-size:16px}.articleLayout{padding:34px 0 55px}.toc{display:none}.card{padding:21px}.article h2{font-size:23px}}


/* === v2.4 knowledge architecture + conversion layer === */
.topicBand{padding:72px 0;background:#071a38;color:#fff;position:relative;overflow:hidden}.topicBand:before{content:"";position:absolute;inset:auto -15% -75% 35%;height:430px;background:radial-gradient(circle,rgba(35,190,243,.19),transparent 60%)}.topicBand h2{font-size:35px;margin:0 0 10px}.topicBand .lead{color:#aebfda}.topicGrid{position:relative;display:grid;grid-template-columns:repeat(5,1fr);gap:12px}.topicCard{padding:21px 18px;border:1px solid rgba(255,255,255,.12);border-radius:20px;background:rgba(255,255,255,.055);transition:.2s;min-height:200px}.topicCard:hover{transform:translateY(-4px);background:rgba(255,255,255,.09);border-color:rgba(80,196,255,.45)}.topicCard .num{font-size:11px;color:#70d8ff;letter-spacing:.12em}.topicCard h3{margin:10px 0 7px;font-size:18px}.topicCard p{color:#aabbd3;font-size:13px;line-height:1.68}.topicCard .go{font-size:12px;color:#76ddff;font-weight:800;margin-top:13px}.pathway{display:grid;grid-template-columns:1.12fr .88fr;gap:22px}.diagnostic{padding:27px;border:1px solid var(--line);background:#fff;border-radius:24px;box-shadow:0 12px 36px rgba(22,65,120,.06)}.diagnostic h3,.proofCard h3{margin:0 0 8px;font-size:22px}.diagRows{margin-top:16px}.diagRow{display:grid;grid-template-columns:40px 1fr auto;align-items:center;gap:13px;padding:13px 0;border-top:1px solid #edf2f8}.diagRow:first-child{border-top:0}.diagNo{width:34px;height:34px;border-radius:11px;background:#edf5ff;color:var(--blue);display:grid;place-items:center;font-size:12px;font-weight:900}.diagRow b{font-size:14px}.diagRow span{display:block;color:var(--muted);font-size:12px}.diagRow a{font-size:12px;color:var(--blue);font-weight:800}.proofCard{padding:28px;border-radius:24px;background:linear-gradient(145deg,#edf6ff,#f8fcff);border:1px solid #dceafa}.proofList{padding:0;margin:18px 0 0;list-style:none}.proofList li{padding:11px 0 11px 27px;position:relative;border-top:1px solid rgba(23,105,224,.08);font-size:14px;color:#415875}.proofList li:before{content:"✓";position:absolute;left:0;color:var(--green);font-weight:900}.clusterNav{margin:0 0 24px;padding:15px 18px;border:1px solid #dce8f6;border-radius:16px;background:#fbfdff;display:flex;align-items:center;gap:12px}.clusterNav .clusterDot{width:34px;height:34px;border-radius:11px;background:linear-gradient(135deg,#e5efff,#e6fbff);display:grid;place-items:center;color:var(--blue);font-weight:900;flex:0 0 auto}.clusterNav b{font-size:13px}.clusterNav span{display:block;font-size:12px;color:var(--muted)}.clusterNav a{margin-left:auto;font-size:12px;color:var(--blue);font-weight:800;white-space:nowrap}.journey{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:28px 0}.journeyStep{padding:17px;border:1px solid var(--line);border-radius:16px;background:#fff}.journeyStep em{font-style:normal;font-size:11px;color:var(--blue);font-weight:850}.journeyStep b{display:block;margin:5px 0;font-size:14px}.journeyStep span{font-size:12px;color:var(--muted)}.conversion{margin:36px 0 0;padding:26px;border-radius:22px;background:linear-gradient(135deg,#0b2147,#0d3769);color:#fff;display:grid;grid-template-columns:1fr auto;gap:20px;align-items:center}.conversion h3{margin:0 0 7px;font-size:21px}.conversion p{margin:0!important;color:#cbd9ec!important;font-size:13px!important}.conversion .actions{justify-content:flex-end}.conversion .btn{background:#fff;color:#145da9;border:0}.conversion .btn.secondary{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.3)}.clusterHero{padding:66px 0 42px;background:radial-gradient(circle at 78% 10%,rgba(33,191,243,.17),transparent 24%),linear-gradient(180deg,#f4f9ff,#fff)}.clusterHero h1{font-size:44px;line-height:1.2;margin:14px 0}.clusterLayout{padding:42px 0 72px}.clusterIntro{display:grid;grid-template-columns:1fr 320px;gap:28px}.clusterKeyGrid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.clusterKey{padding:22px;border-radius:20px;border:1px solid var(--line);background:#fff}.clusterKey b{display:block;font-size:13px;color:var(--blue);margin-bottom:6px}.clusterKey p{margin:0;color:var(--muted);font-size:14px}.clusterArticles{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:26px}.clusterArticle{padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff;transition:.2s}.clusterArticle:hover{transform:translateY(-3px);box-shadow:0 12px 30px rgba(22,65,120,.08);border-color:#cadff7}.clusterArticle small{color:var(--blue);font-weight:800}.clusterArticle h3{font-size:16px;line-height:1.45;margin:6px 0}.clusterArticle p{font-size:13px;color:var(--muted);margin:0}.clusterArticle .go{margin-top:12px;color:var(--blue);font-size:12px;font-weight:800}.searchWrap{position:relative;max-width:640px}.searchWrap .searchbox{max-width:none}.searchResults{display:none;position:absolute;left:0;right:0;top:calc(100% + 8px);z-index:40;background:#fff;border:1px solid #dce7f5;border-radius:16px;box-shadow:0 22px 50px rgba(10,47,95,.16);overflow:hidden}.searchResults.show{display:block}.searchResult{display:block;padding:13px 16px;border-top:1px solid #edf2f8}.searchResult:first-child{border-top:0}.searchResult b{display:block;font-size:13px}.searchResult span{display:block;color:var(--muted);font-size:11px;margin-top:2px}.searchEmpty{padding:14px 16px;color:var(--muted);font-size:13px}.trustStrip{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:28px}.trustItem{padding:17px;border-radius:16px;border:1px solid var(--line);background:#fff}.trustItem b{display:block;font-size:14px}.trustItem span{font-size:12px;color:var(--muted)}
@media(max-width:1050px){.topicGrid{grid-template-columns:repeat(3,1fr)}.pathway,.clusterIntro{grid-template-columns:1fr}.conversion{grid-template-columns:1fr}.conversion .actions{justify-content:flex-start}}
@media(max-width:700px){.topicGrid,.clusterArticles,.journey,.clusterKeyGrid,.trustStrip{grid-template-columns:1fr}.topicBand{padding:54px 0}.topicBand h2{font-size:28px}.clusterHero h1{font-size:34px}.clusterNav{align-items:flex-start;flex-wrap:wrap}.clusterNav a{margin-left:46px}.conversion{padding:21px}.diagRow{grid-template-columns:38px 1fr}.diagRow a{grid-column:2}}

/* === v2.5 SEO growth / network lab === */
.topicGrid{grid-template-columns:repeat(3,1fr)}
.conceptLab{background:linear-gradient(180deg,#fff,#f4f9ff)}
.labHead{display:flex;align-items:end;justify-content:space-between;gap:28px;margin-bottom:28px}.labHead h2{margin:12px 0 8px}.labHead .lead{margin:0}.labGrid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.labGrid a{padding:21px;border-radius:18px;background:#fff;border:1px solid var(--line);box-shadow:0 8px 24px rgba(22,65,120,.045);transition:.2s}.labGrid a:hover{transform:translateY(-3px);border-color:#c7dcf7;box-shadow:0 16px 34px rgba(22,65,120,.08)}.labGrid b{display:block;color:var(--blue);font-size:16px}.labGrid span{display:block;margin-top:5px;color:var(--muted);font-size:13px}.tip b{color:var(--blue)}
@media(max-width:800px){.labHead{display:block}.labHead .btn{margin-top:18px}.labGrid{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.labGrid{grid-template-columns:1fr}}

/* === v2.6 authority + AI extractability layer === */
.contentProvenance{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:14px;color:#6d7f96;font-size:12px}.contentProvenance span{display:inline-flex;gap:6px;align-items:center}.contentProvenance b{color:#2d4868;font-size:11px;text-transform:uppercase;letter-spacing:.04em}.keyFacts{margin:24px 0 28px;border:1px solid #dbe8f6;border-radius:19px;background:linear-gradient(145deg,#f7fbff,#fff);padding:20px 22px}.keyFactsHead{display:flex;align-items:center;gap:10px;margin-bottom:9px}.keyFactsHead span{font-size:10px;letter-spacing:.13em;font-weight:900;color:#1f77df;background:#eaf4ff;border-radius:999px;padding:4px 8px}.keyFactsHead b{font-size:14px}.keyFacts ul{margin:0;padding-left:21px}.keyFacts li{margin:7px 0;color:#334d6a;font-size:14px}.editorialNote{margin:30px 0 8px;padding:20px 22px;border:1px solid #dae6f5;border-radius:18px;background:#fbfdff;display:flex;gap:20px;align-items:center;justify-content:space-between}.editorialNote p{font-size:13px!important;color:#5f728b!important;margin:5px 0 0!important}.editorialNote>a{white-space:nowrap;color:var(--blue);font-weight:800;font-size:12px}.editorialTag{display:inline-block;color:#2772cd;font-size:10px;font-weight:900;letter-spacing:.12em}.referenceBlock{margin:30px 0;padding:22px;border:1px solid #dae7f6;border-radius:18px;background:#f7fbff}.referenceBlock>span{font-size:10px;letter-spacing:.12em;color:#2772cd;font-weight:900}.referenceBlock h2{font-size:20px!important;margin:5px 0!important}.referenceBlock p{font-size:13px!important;color:#61748c!important}.referenceBlock ul{margin:9px 0 0;padding-left:20px}.referenceBlock a{color:#1769e0;font-size:13px}.termGrid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:20px 0}.termCard{margin:0;padding:18px;border:1px solid var(--line);border-radius:16px;background:#fff}.termCard dt{font-weight:850;color:#173f72}.termCard dd{margin:6px 0 0;color:#5c708a;font-size:13px}.termCard a{color:var(--blue);font-weight:750}.flowStep{padding:18px 20px;border-left:4px solid #2c87e8;background:#f7fbff;border-radius:0 15px 15px 0;color:#405a77}.referenceList{padding-left:20px}.referenceList li{margin:10px 0}.referenceList a{color:var(--blue);font-weight:700}.footerTrust{display:flex;gap:16px;flex-wrap:wrap;border-top:1px solid #183153;margin-top:30px;padding-top:18px}.footerTrust a{font-size:12px;color:#8fa6c2}.copyright{border-top:0;margin-top:12px}.authorityBand{background:linear-gradient(180deg,#f7fbff,#fff)}.authorityHead{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:24px}.authorityHead h2{margin:12px 0 7px}.authorityHead .lead{margin:0}.authorityGrid{display:grid;grid-template-columns:repeat(4,1fr);gap:13px}.authorityGrid a{padding:20px;border:1px solid var(--line);border-radius:18px;background:#fff;box-shadow:0 8px 24px rgba(22,65,120,.04);transition:.2s}.authorityGrid a:hover{transform:translateY(-3px);border-color:#c8ddf6}.authorityGrid b{display:block;color:#163f72;margin-bottom:5px}.authorityGrid span{display:block;font-size:12px;color:var(--muted);line-height:1.65}
@media(max-width:850px){.authorityGrid{grid-template-columns:1fr 1fr}.authorityHead{display:block}.authorityHead .btn{margin-top:16px}.editorialNote{display:block}.editorialNote>a{display:inline-block;margin-top:12px}.termGrid{grid-template-columns:1fr}}
@media(max-width:560px){.authorityGrid{grid-template-columns:1fr}.contentProvenance{display:grid;gap:6px}.keyFacts{padding:17px}.keyFactsHead{align-items:flex-start;flex-direction:column}.editorialNote{padding:18px}}


/* === v2.7 launch polish === */
:focus-visible{outline:3px solid rgba(23,105,224,.35);outline-offset:3px;border-radius:8px}.skipLink{position:fixed;left:18px;top:-60px;z-index:9999;padding:10px 14px;border-radius:10px;background:#fff;color:#0b2f5e;font-weight:800;box-shadow:0 10px 28px rgba(8,36,78,.18);transition:top .18s}.skipLink:focus{top:16px}.header{box-shadow:0 1px 0 rgba(15,54,103,.02)}.nav a,.headcta,.btn,.card,.topicCard,.labGrid a,.authorityGrid a{will-change:transform}.mobileMenu{appearance:none;border:1px solid #dbe7f5;background:#fff;color:#173f72;width:42px;height:42px;border-radius:12px;align-items:center;justify-content:center;cursor:pointer;line-height:1}.mobileMenu[aria-expanded="true"]{background:#edf5ff;color:var(--blue)}h1,h2,h3[id],.sectionblock[id]{scroll-margin-top:108px}.toc a.active{color:var(--blue);border-color:var(--blue);font-weight:800;background:#f7fbff}.searchResult:focus,.searchResult:hover{background:#f6faff}.brandmark{background:#0a1833}.heroVisual,.glass{transform:translateZ(0)}.article p,.clusterArticle p,.card p{overflow-wrap:anywhere}.footer a:hover{color:#fff}.footerTrust a:hover{color:#d6e7fb}
@media(max-width:950px){.headerin{position:relative}.nav{position:absolute;display:none;left:18px;right:18px;top:66px;padding:12px;background:rgba(255,255,255,.98);backdrop-filter:blur(20px);border:1px solid #dce8f6;border-radius:18px;box-shadow:0 18px 48px rgba(12,48,94,.16);flex-direction:column;align-items:stretch;gap:4px}.nav.open{display:flex}.nav a{padding:11px 13px}.mobileMenu{display:inline-flex}.headcta{margin-left:auto}.nav.open+.headcta{visibility:hidden}.menuOpen{overflow:hidden}}
@media(max-width:640px){.headcta{display:none}.nav{left:0;right:0;top:58px;border-radius:0 0 18px 18px;border-left:0;border-right:0}.toc{display:block;max-height:300px;overflow:auto}.articleLayout{gap:22px}.articleHero h1{overflow-wrap:anywhere}.hero h1{font-size:36px}.hero p{font-size:15px}.authorityBand,.conceptLab{overflow:hidden}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition-duration:.001ms!important;animation-duration:.001ms!important}}