:root{--hc-brand:#245b8b;--hc-brand-strong:#17466f;--hc-brand-deep:#0d2f4d;--hc-brand-soft:#edf5fb;--hc-brand-line:#cbddec;--hc-on-brand:#fff;--hc-focus:rgba(36,91,139,.24)}
html[data-theme="mono"]{--hc-brand:#111;--hc-brand-strong:#090909;--hc-brand-deep:#000;--hc-brand-soft:#f3f3f3;--hc-brand-line:#d8d8d8;--hc-on-brand:#fff;--hc-focus:rgba(0,0,0,.18)}
body>header:not(.top):not(.lp-header),#v2Header{background:var(--hc-brand-deep)!important;color:var(--hc-on-brand)!important}.top,.topbar,.lp-header{background:#fff!important;color:#111!important;border-bottom:1px solid #e5e7ea!important;box-shadow:0 1px 6px rgba(0,0,0,.04)}.top a,.topbar a,.topbar .brand-name{color:#555!important}.top .brand,.top .brand b,.brand-name{color:#111!important}.top a:hover,.top a.active,.lp-nav a:hover,.lp-nav a.active{color:#111!important}.lp-nav a{color:#555!important}.topnav a.active,.topnav a:hover{background:var(--hc-brand-soft)!important;color:#111!important}.brand-logo,.avatar,.mini-avatar{background:var(--hc-brand)!important;color:#fff!important}
.banner,.promo{color:var(--hc-brand-deep)!important}.hero{background:var(--hc-brand-deep)!important}.hero-bg:before{background:linear-gradient(180deg,transparent 42%,rgba(13,47,77,.38) 58%,rgba(13,47,77,.97) 88%,var(--hc-brand-deep) 100%),linear-gradient(90deg,var(--hc-brand-deep) 0%,rgba(13,47,77,.96) 42%,rgba(13,47,77,.57) 72%,rgba(13,47,77,.4) 100%)!important}html[data-theme="mono"] .hero-bg:before{background:linear-gradient(180deg,transparent 42%,rgba(0,0,0,.32) 58%,rgba(0,0,0,.97) 88%,#000 100%),linear-gradient(90deg,#05080b 0%,rgba(5,8,11,.97) 42%,rgba(5,8,11,.48) 72%,rgba(5,8,11,.34) 100%)!important}
.hero-partners{background:var(--hc-brand-deep)!important;box-shadow:0 -105px 95px 38px var(--hc-brand-deep)!important}.hero-logo-item{color:var(--hc-on-brand)!important}.membership-pricing,footer{background:var(--hc-brand-deep)!important}.hc-launch,.hc-quick-head,.hc-btn,.pricing-cta{background:var(--hc-brand)!important;border-color:var(--hc-brand)!important}.hc-btn.alt{background:#fff!important;color:var(--hc-brand)!important}.hc-tab.active{color:var(--hc-brand)!important;border-color:var(--hc-brand)!important}
.courses .course-card,.hc-course-card,.lp-card,.path-card,.stat,.card{border-top-color:var(--hc-brand)!important}.courses .tabs a.active{border-color:var(--hc-brand)!important;color:var(--hc-brand)!important}.course-card .cat,.hc-course-cat,.lp-chip{border-color:var(--hc-brand)!important;color:var(--hc-brand-strong)!important}.btn:not(.danger),.lp-button:not(.light),.pc-progress i,.lp-account,.billing-toggle button[aria-pressed="true"],.btn-login,.start,.complete,.finish a{background:var(--hc-brand)!important;border-color:var(--hc-brand)!important;color:#fff!important}.btn.alt,.lp-button.light,.action-link{background:#fff!important;color:var(--hc-brand)!important;border-color:var(--hc-brand)!important}.tab.active{color:var(--hc-brand)!important;border-color:var(--hc-brand)!important}.side a.active,.feed-nav{background:var(--hc-brand)!important;color:#fff!important}.bar i{background:var(--hc-brand)!important}
.lp-hero{background:#f7f8fa!important;color:#111!important}.lp-hero p{color:#667085!important}.lp-hero-lines{border-color:#d7dce1!important}.pc-side,.pc-welcome{background:#fff!important;color:#111!important;border:1px solid #e5e7ea!important;box-shadow:0 2px 10px rgba(0,0,0,.04)}.pc-welcome p{color:#667085!important}.lp-eyebrow{color:#697079!important}.lp-search input:focus,.pc-form input:focus{border-color:var(--hc-brand)!important;outline:3px solid var(--hc-focus)}.pc-menu button.active{background:#111!important;color:#fff!important}.pc-menu button:hover,.pc-menu a:hover{background:#f3f4f5!important;color:#111!important}.pc-grade{background:var(--hc-brand)!important}.progress i,.node-seq{border-color:var(--hc-brand)!important}.status.online{border-color:var(--hc-brand)!important;color:var(--hc-brand)!important}.nav-btn.active,.nav-btn:hover{background:var(--hc-brand)!important}
.theme-setting{border:1px solid var(--hc-brand-line)!important;background:var(--hc-brand-soft)!important}.theme-options{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}.theme-choice{min-width:150px;padding:13px 16px;border:2px solid transparent;border-radius:6px;background:#fff;color:#333;font-weight:700;cursor:pointer}.theme-choice[aria-pressed="true"]{border-color:var(--hc-brand)!important;box-shadow:0 0 0 3px var(--hc-focus)}.theme-swatch{display:inline-flex;width:28px;height:18px;margin-right:8px;border-radius:999px;vertical-align:-4px;background:linear-gradient(90deg,#245b8b 50%,#fff 50%);border:1px solid #ccd5dc}.theme-choice[data-theme-value="mono"] .theme-swatch{background:linear-gradient(90deg,#111 50%,#fff 50%)}

/* 顶部宣传条：白底 + 文字跟随主题色（蓝白主题为品牌蓝，黑白主题为黑，--hc-brand-deep 本身随主题切换） */
.topbar,#v2Topbar{background:#fff!important;color:var(--hc-brand-deep)!important;border-bottom:1px solid var(--hc-brand-line)!important}
.topbar a,#v2Topbar a{color:var(--hc-brand)!important}