:root{--theme:#2d3280;--theme-dark:#22265f;--theme-deep:#15183f;--theme-light:#f4f5ff;--theme-soft:#e7e8fa;--theme-accent:#565dc0;--theme-hover:#252a6f;--theme-border:rgba(45,50,128,.28);--header-bg:#1a1e55;--header-bg-2:#252a6b;--text-main:#2b2d45;--text-muted:#60637d;--on-theme:#ffffff;--on-header:#f7f7ff;--on-dark:#f7f7ff;--white:#ffffff;--shadow-soft:0 18px 50px rgba(34,38,95,.16)}
*{box-sizing:border-box}html,body{margin:0;min-height:100%;overflow-x:hidden;overflow-y:auto}body{font-family:Arial,"Helvetica Neue",sans-serif;background:var(--theme-light);color:var(--text-main);line-height:1.7}a{color:var(--theme-dark)}img{max-width:100%}.container,.section-inner,.header-inner,.footer-inner,.hero-inner{width:min(1280px,calc(100% - 80px));margin-left:auto;margin-right:auto}.section{padding:64px 0}.site-header{position:sticky;top:0;width:100%;z-index:9999;background:linear-gradient(180deg,var(--header-bg) 0%,var(--header-bg-2) 100%);color:var(--on-header);box-shadow:var(--shadow-soft);border-bottom:1px solid var(--theme-border);overflow:visible}.header-inner{min-height:82px;display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:24px}.site-logo,.drawer-logo{display:inline-flex;align-items:center;justify-content:center}.site-logo img{display:block;width:auto;height:auto;max-width:190px;max-height:72px;object-fit:contain}.main-nav{display:flex;justify-content:center;align-items:center;gap:18px}.main-nav a{color:var(--on-header);text-decoration:none;white-space:nowrap;font-weight:700;font-size:14px;padding:30px 0 25px;border-bottom:3px solid transparent}.main-nav a.active,.main-nav a:hover{color:#c8cbff;border-bottom-color:var(--theme-accent)}.main-btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 20px;background:linear-gradient(180deg,var(--theme-accent) 0%,var(--theme) 48%,var(--theme-dark) 100%);color:var(--on-theme);border-radius:999px;box-shadow:0 14px 28px rgba(0,0,0,.18);text-decoration:none;white-space:nowrap;font-weight:800}.main-btn:hover{background:linear-gradient(180deg,var(--theme),var(--theme-hover))}.mobile-menu-toggle{display:none}.page-hero,.hero-section{padding:70px 0 48px;background:radial-gradient(circle at 15% 20%,var(--theme-soft) 0%,transparent 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h2,.section-heading h2,.section-heading h3,.split-panel h2,.related-card h2,.related-card h3{font-size:clamp(28px,3vw,42px);line-height:1.15;color:var(--theme-dark);margin:14px 0 18px}.topic-copy p,.section-heading p{font-size:17px;color:var(--text-main)}.detail-list,.check-list{margin:22px 0 0;padding:0;list-style:none;display:grid;gap:12px}.detail-list li,.check-list li{position:relative;padding:14px 16px 14px 42px;background:var(--white);border:1px solid var(--theme-border);border-radius:18px;box-shadow:0 8px 25px rgba(45,50,128,.07)}.detail-list li:before,.check-list li:before{content:'•';position:absolute;left:18px;top:11px;font-size:22px;color:var(--theme)}.topic-side{position:sticky;top:112px}.side-note{padding:28px;border-radius:24px;background:linear-gradient(145deg,var(--theme-soft),var(--white));border:1px solid var(--theme-border);box-shadow:var(--shadow-soft)}.side-note 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/* Home */.hero-section{padding:58px 0 42px}.info-section{padding:30px 0 48px}.info-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.info-card{padding:24px}.info-card span{color:var(--theme);font-weight:900}.info-card h2{color:var(--theme-dark);font-size:21px;margin:10px 0}.category-section{padding:18px 0 52px}.category-pills{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}.home-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:20px}.category-card{padding:24px}.category-card .card-number{color:var(--theme);font-weight:900}.category-card h3{font-size:22px;color:var(--theme-dark);margin:10px 0}.category-card p{color:var(--text-muted)}.text-link{font-weight:800;text-decoration:none}.feature-band{background:var(--theme-soft)}.three-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}.feature-card{padding:28px}.feature-card h3{color:var(--theme-dark);font-size:22px}.feature-card p{color:var(--text-muted)}.home-feature{display:grid;grid-template-columns:1fr 1fr;gap:44px;align-items:center}.home-feature.reverse .feature-copy{order:2}.feature-visual{min-height:300px;padding:30px;border-radius:28px;background:linear-gradient(145deg,var(--white),var(--theme-soft));border:1px solid var(--theme-border);box-shadow:var(--shadow-soft);display:flex;align-items:center;justify-content:center}.feature-visual img{max-width:100%;max-height:300px;width:auto;height:auto;object-fit:contain}.home-feedback{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(min-width:1440px){.container,.section-inner,.header-inner,.footer-inner,.hero-inner{width:min(1360px,calc(100% - 120px))}}
@media(max-width:1180px){.main-nav{gap:12px}.main-nav a{font-size:13px}.entity-grid,.home-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:1023px){.header-inner{width:min(100% - 28px,1280px);min-height:68px;grid-template-columns:48px minmax(0,1fr) auto;gap:10px}.mobile-menu-toggle{display:inline-flex;flex-direction:column;gap:5px;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid rgba(255,255,255,.25);border-radius:12px;background:rgba(255,255,255,.08)}.mobile-menu-toggle span{width:20px;height:2px;background:white}.main-nav{display:none}.site-logo{justify-self:center}.site-logo img{max-width:min(150px,42vw);max-height:56px}.header-actions{justify-self:end}.header-actions .main-btn{padding:10px 16px}.page-hero-grid,.hero-inner,.topic-grid,.topic-grid.reverse,.split-panel,.home-feature,.related-card{grid-template-columns:1fr;gap:30px}.topic-grid.reverse .topic-copy,.home-feature.reverse .feature-copy{order:initial}.topic-side{position:static}.page-visual,.hero-media-box{max-width:100%;min-height:auto;padding:24px}.entity-grid,.info-grid,.three-grid,.footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.related-links{justify-content:flex-start}}
@media(max-width:767px){.container,.section-inner,.header-inner,.footer-inner,.hero-inner{width:min(100% - 32px,1280px)}.section{padding:46px 0}.page-hero,.hero-section{padding:44px 0 34px}.page-hero-copy h1,.hero-content h1{font-size:clamp(34px,10vw,48px)}.entity-grid,.home-grid,.info-grid,.three-grid,.feedback-grid,.footer-grid{grid-template-columns:1fr}.page-visual img,.hero-media-box img{max-height:280px}.footer-grid{gap:24px}.home-feature{gap:24px}}
@media(max-width:390px){.header-inner{width:min(100% - 20px,1280px);grid-template-columns:44px minmax(0,1fr) auto;gap:8px}.site-logo img{max-width:min(120px,36vw);max-height:48px}.header-actions .main-btn{padding:8px 12px;font-size:13px}}