:root { --bcp-red: #c9151e; --bcp-red-dark: #9f1017; --bcp-ink: #171717; --bcp-muted: #596067; --bcp-line: #e4e6e8; --bcp-soft: #f7f8f8; --bcp-warm: #fff8f7; }
html { scroll-behavior: smooth; }
.bcp-page { margin: 0; color: var(--bcp-ink); background: #fff; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif; line-height: 1.7; }
.bcp-page *, .bcp-page *::before, .bcp-page *::after { box-sizing: border-box; }
.bcp-page a { color: inherit; }
.bcp-page a:focus-visible, .bcp-page summary:focus-visible, .bcp-comparison-scroll:focus-visible { outline: 2px solid #1b70c9; outline-offset: 3px; }
.bcp-main { overflow: hidden; }
.bcp-wrap { width: min(1140px, calc(100% - 40px)); margin: 0 auto; }

.bcp-hero { padding: 20px 0 54px; border-bottom: 1px solid var(--bcp-line); background: linear-gradient(180deg, #fff 0%, #fff 70%, #fcf8f8 100%); }
.bcp-breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 28px; color: #747a7f; font-size: 13px; }
.bcp-breadcrumb a { color: #62676b; text-decoration: none; }
.bcp-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 58px; align-items: start; }
.bcp-kicker { margin: 0 0 12px; color: var(--bcp-red); font-size: 14px; font-weight: 700; }
.bcp-hero h1 { max-width: 760px; margin: 0; font-size: 42px; line-height: 1.22; letter-spacing: 0; text-wrap: balance; }
.bcp-hero-copy > p:not(.bcp-kicker) { max-width: 760px; margin: 22px 0 0; color: #3f4347; font-size: 17px; line-height: 1.9; }
.bcp-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 28px; }
.bcp-actions a, .bcp-bottom-cta > a { display: inline-flex; min-height: 42px; align-items: center; justify-content: center; padding: 0 20px; border: 1px solid transparent; border-radius: 4px; font-size: 15px; font-weight: 700; text-decoration: none; transition: border-color .18s ease, background-color .18s ease, color .18s ease; }
.bcp-primary, .bcp-bottom-cta > a { color: #fff !important; background: var(--bcp-red); border-color: var(--bcp-red); }
.bcp-primary:hover, .bcp-bottom-cta > a:hover { background: var(--bcp-red-dark); border-color: var(--bcp-red-dark); }
.bcp-secondary { color: #25292c !important; background: #fff; border-color: #cfd3d6 !important; }
.bcp-secondary:hover { border-color: #989da1 !important; background: var(--bcp-soft); }
.bcp-hero-guide { padding: 22px; border: 1px solid var(--bcp-line); border-radius: 6px; background: #fff; }
.bcp-hero-guide h2 { margin: 0 0 12px; font-size: 20px; }
.bcp-hero-guide dl { margin: 0; }
.bcp-hero-guide dl > div { padding: 12px 0; border-top: 1px solid var(--bcp-line); }
.bcp-hero-guide dt { color: #777d82; font-size: 12px; }
.bcp-hero-guide dd { margin: 4px 0 0; color: #343a3f; font-size: 14px; line-height: 1.65; }

.bcp-section { padding-top: 54px; }
.bcp-section-head { display: flex; gap: 22px; align-items: baseline; justify-content: space-between; margin-bottom: 22px; padding-bottom: 14px; border-bottom: 1px solid var(--bcp-line); }
.bcp-section-head h2 { position: relative; flex: 0 0 auto; margin: 0; padding-left: 13px; font-size: 25px; line-height: 1.35; }
.bcp-section-head h2::before { position: absolute; top: .19em; bottom: .19em; left: 0; width: 4px; border-radius: 2px; background: var(--bcp-red); content: ""; }
.bcp-section-head p { max-width: 620px; margin: 0; color: var(--bcp-muted); font-size: 14px; text-align: right; }
.bcp-scenario-grid, .bcp-course-grid, .bcp-expert-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.bcp-hero-grid > *, .bcp-scenario-grid > *, .bcp-course-grid > *, .bcp-expert-grid > * { min-width: 0; }
.bcp-scenario-card, .bcp-course-card, .bcp-expert-card { border: 1px solid var(--bcp-line); border-radius: 6px; background: #fff; }
.bcp-scenario-card { display: flex; min-height: 224px; flex-direction: column; align-items: flex-start; padding: 24px; }
.bcp-scenario-card > span, .bcp-course-card-top > span { display: inline-flex; padding: 3px 8px; border: 1px solid #efcfcc; border-radius: 4px; color: var(--bcp-red); background: var(--bcp-warm); font-size: 12px; font-weight: 700; }
.bcp-scenario-card h3 { margin: 15px 0 8px; font-size: 18px; line-height: 1.55; }
.bcp-scenario-card p { margin: 0; color: var(--bcp-muted); font-size: 14px; }
.bcp-scenario-card a { margin-top: auto; padding-top: 18px; color: var(--bcp-red); font-size: 14px; font-weight: 700; text-decoration: none; }

.bcp-anchor { scroll-margin-top: calc(var(--cc-fixed-header-height) + var(--cc-anchor-gap)); }
.bcp-course-card { display: flex; min-height: 100%; flex-direction: column; padding: 24px; }
.bcp-course-card-top { display: flex; gap: 12px; align-items: center; justify-content: space-between; }
.bcp-course-card-top p { margin: 0; color: #73797e; font-size: 12px; }
.bcp-course-card h3 { margin: 16px 0 0; font-size: 21px; line-height: 1.45; }
.bcp-course-card h3 a { color: var(--bcp-ink); text-decoration: none; }
.bcp-course-card h3 a:hover, .bcp-course-footer a:hover, .bcp-expert-card a:hover, .bcp-related a:hover { color: var(--bcp-red); }
.bcp-course-summary { margin: 14px 0 0; color: #4e555b; font-size: 14px; }
.bcp-course-facts { display: grid; gap: 0; margin: 20px 0 0; border-top: 1px solid var(--bcp-line); }
.bcp-course-facts > div { padding: 12px 0; border-bottom: 1px solid var(--bcp-line); }
.bcp-course-facts dt { color: #777d82; font-size: 12px; }
.bcp-course-facts dd { margin: 4px 0 0; color: #30363a; font-size: 14px; line-height: 1.7; }
.bcp-course-footer { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; margin-top: auto; padding-top: 20px; }
.bcp-course-footer a { color: var(--bcp-red); font-size: 14px; font-weight: 700; text-decoration: none; }
.bcp-course-link { display: inline-flex; min-height: 36px; align-items: center; padding: 0 12px; border: 1px solid #efc9c5; border-radius: 4px; }

.bcp-comparison-scroll { overflow-x: auto; border: 1px solid var(--bcp-line); border-radius: 6px; }
.bcp-comparison-table { width: 100%; min-width: 720px; border-collapse: collapse; text-align: left; }
.bcp-comparison-table th, .bcp-comparison-table td { padding: 16px 18px; border-bottom: 1px solid var(--bcp-line); vertical-align: top; font-size: 14px; line-height: 1.72; }
.bcp-comparison-table thead th { color: #24292d; background: #fafafa; font-size: 15px; }
.bcp-comparison-table thead th:first-child, .bcp-comparison-table tbody th { width: 148px; }
.bcp-comparison-table tbody th { color: #656c72; font-size: 13px; font-weight: 700; background: #fcfcfc; }
.bcp-comparison-table tr:last-child th, .bcp-comparison-table tr:last-child td { border-bottom: 0; }

.bcp-expert-card { padding: 22px; }
.bcp-expert-head { display: flex; gap: 14px; align-items: center; padding-bottom: 16px; border-bottom: 1px solid var(--bcp-line); }
.bcp-expert-head img { width: 64px; height: 64px; flex: 0 0 auto; border-radius: 50%; background: #f1f3f4; object-fit: cover; }
.bcp-expert-head h3 { margin: 0; font-size: 18px; }
.bcp-expert-head h3 a, .bcp-expert-course a { color: var(--bcp-red); text-decoration: none; }
.bcp-expert-head p { margin: 3px 0 0; color: #777d82; font-size: 13px; }
.bcp-expert-course { display: grid; gap: 5px; padding: 14px 0; border-bottom: 1px solid var(--bcp-line); font-size: 14px; }
.bcp-expert-course span { color: #777d82; font-size: 12px; }
.bcp-expert-course a { font-weight: 700; line-height: 1.55; }
.bcp-expert-card > p { margin: 14px 0 0; color: var(--bcp-muted); font-size: 13px; }

.bcp-example { padding: 26px 28px; border: 1px solid #efd0cc; border-radius: 6px; background: var(--bcp-warm); }
.bcp-example-label { margin: 0; color: var(--bcp-red); font-size: 13px; font-weight: 700; }
.bcp-example blockquote { margin: 12px 0; color: #22272b; font-size: 18px; font-weight: 700; line-height: 1.65; }
.bcp-example > p:last-child { margin: 0; color: #4f555a; font-size: 14px; }
.bcp-faq details { border-bottom: 1px solid var(--bcp-line); }
.bcp-faq summary { padding: 16px 4px; cursor: pointer; font-size: 15px; font-weight: 700; }
.bcp-faq p { margin: 0; padding: 0 26px 18px 4px; color: var(--bcp-muted); font-size: 14px; }
.bcp-related > div { display: flex; flex-wrap: wrap; gap: 14px; }
.bcp-related a { display: inline-flex; min-height: 42px; align-items: center; padding: 0 16px; border: 1px solid var(--bcp-line); border-radius: 4px; color: var(--bcp-red); font-size: 14px; font-weight: 700; text-decoration: none; }
.bcp-bottom-cta { display: flex; gap: 30px; align-items: center; justify-content: space-between; margin-top: 54px; margin-bottom: 54px; padding: 28px 30px; border: 1px solid #efd0cc; border-radius: 6px; background: var(--bcp-warm); }
.bcp-bottom-cta h2, .bcp-bottom-cta p { margin: 0; }
.bcp-bottom-cta h2 { font-size: 22px; }
.bcp-bottom-cta p { margin-top: 6px; color: var(--bcp-muted); font-size: 14px; }

.bcp-modal { position: fixed; z-index: 2000; inset: 0; display: none; place-items: center; padding: 20px; }
.bcp-modal:target { display: grid; }
.bcp-modal-mask { position: absolute; inset: 0; background: rgba(0, 0, 0, .48); }
.bcp-modal-panel { position: relative; z-index: 1; width: min(265px, 100%); overflow: hidden; border-radius: 14px; background: #fff; box-shadow: 0 18px 48px rgba(0, 0, 0, .24); text-align: center; }
.bcp-modal-close { position: absolute; z-index: 2; top: 8px; right: 10px; display: grid; width: 24px; height: 24px; place-items: center; border-radius: 50%; color: #fff !important; background: rgba(255, 255, 255, .3); font-size: 19px; line-height: 1; text-decoration: none; }
.bcp-wechat-top { position: relative; height: 128px; overflow: hidden; padding: 18px 18px 0; color: #fff; text-align: left; }
.bcp-wechat-top > img { position: absolute; z-index: 0; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.bcp-wechat-top > div { position: relative; z-index: 1; font-size: 20px; font-weight: 700; }
.bcp-wechat-top p { position: relative; z-index: 1; margin: 4px 0 0; font-size: 12px; }
.bcp-wechat-qr { position: relative; z-index: 1; display: block; width: 190px; height: 189px; margin: -14px auto 0; border-radius: 10px; background: #fff; object-fit: contain; }
.bcp-modal-panel > p { margin: 0; padding: 12px 18px 18px; color: #2d3033; font-size: 13px; font-weight: 700; }

@media (max-width: 900px) { .bcp-hero-grid { grid-template-columns: 1fr; gap: 28px; } .bcp-hero-guide { max-width: 620px; } }
@media (max-width: 700px) { .bcp-section-head { display: block; } .bcp-section-head p { margin-top: 8px; text-align: left; } .bcp-scenario-grid, .bcp-course-grid, .bcp-expert-grid { grid-template-columns: 1fr; } .bcp-scenario-card { min-height: auto; } }
@media (max-width: 640px) { .bcp-main { padding-top: var(--cc-fixed-header-height); } .bcp-wrap { width: min(100% - 28px, 1140px); } .bcp-hero { padding-top: 12px; padding-bottom: 36px; } .bcp-breadcrumb { margin-bottom: 20px; } .bcp-hero h1 { font-size: 30px; line-height: 1.3; } .bcp-hero-copy > p:not(.bcp-kicker) { font-size: 15px; line-height: 1.8; overflow-wrap: anywhere; } .bcp-actions { display: grid; grid-template-columns: 1fr; min-width: 0; } .bcp-actions a { width: 100%; min-width: 0; } .bcp-section { padding-top: 40px; } .bcp-section-head h2 { font-size: 22px; } .bcp-section-head p, .bcp-scenario-card h3, .bcp-scenario-card p, .bcp-expert-course a { overflow-wrap: anywhere; } .bcp-scenario-card, .bcp-course-card, .bcp-expert-card { max-width: 100%; padding: 18px; } .bcp-course-card h3 { font-size: 19px; overflow-wrap: anywhere; } .bcp-course-card-top { align-items: flex-start; flex-direction: column; gap: 8px; } .bcp-course-footer { align-items: flex-start; flex-direction: column; gap: 12px; } .bcp-example { padding: 22px; } .bcp-example blockquote { font-size: 17px; } .bcp-bottom-cta { display: grid; gap: 18px; margin-top: 40px; margin-bottom: 40px; padding: 22px; } .bcp-bottom-cta > a { width: 100%; } }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } .bcp-actions a, .bcp-bottom-cta > a { transition: none; } }