/**
 * 北途公众号排版器 - 实时预览样式
 * beitu.cc 北途技术支持
 */

.bt-preview-wrap { background: #ffffff; padding: 28px 24px; border-radius: 8px; }

.bt-h1 { font-size: 26px; line-height: 1.35; font-weight: 800; color: #1e3a8a; text-align: center; margin: 0 0 20px 0; }
.bt-h2 { font-size: 20px; line-height: 1.4; font-weight: 700; color: #1e3a8a; border-left: 4px solid #1e3a8a; padding-left: 14px; margin: 32px 0 16px 0; }
.bt-h3 { font-size: 17px; line-height: 1.4; font-weight: 700; color: #1e3a8a; margin: 22px 0 12px 0; }

.bt-p { font-size: 16px; line-height: 1.9; color: #1f2937; margin: 0 0 20px 0; }

.bt-lead { font-size: 15px; line-height: 1.85; color: #64748b; margin: 0 0 22px 0; padding: 14px 18px; background: #f8fafc; border-left: 3px solid #d4a574; border-radius: 0 8px 8px 0; font-style: italic; }

.bt-bar { margin: 26px 0; padding: 18px 20px; background: #f8fafc; border-left: 4px solid #1e3a8a; border-radius: 0 10px 10px 0; }
.bt-bar-title { font-size: 16px; font-weight: 700; color: #1e3a8a; margin: 0 0 12px 0; }
.bt-bar-body { font-size: 16px; line-height: 1.9; color: #334155; }

.bt-stat { display: inline-block; background: #ffffff; border: 1px solid #e2e8f0; border-top: 3px solid #d4a574; border-radius: 10px; padding: 22px 30px; margin: 10px 10px 10px 0; text-align: center; min-width: 120px; box-shadow: 0 4px 12px rgba(15, 23, 42, 0.04); vertical-align: top; }
.bt-stat-value { font-size: 32px; font-weight: 800; color: #1e3a8a; line-height: 1.1; }
.bt-stat-label { font-size: 12.5px; color: #94a3b8; margin-top: 10px; letter-spacing: 1.5px; }

.bt-quote { margin: 36px 0; padding: 28px 24px; text-align: center; }
.bt-quote-mark { font-size: 40px; color: #d4a574; line-height: 1; font-family: Georgia, serif; opacity: 0.7; }
.bt-quote-text { font-size: 18px; color: #1e3a8a; line-height: 1.9; font-style: italic; font-weight: 500; margin: -8px 0 0 0; }
.bt-quote-line { width: 44px; height: 2px; background: #d4a574; margin: 20px auto 0; }

.bt-step { display: flex; align-items: flex-start; gap: 14px; margin: 20px 0; }
.bt-step-num { display: inline-block; width: 30px; height: 30px; line-height: 30px; text-align: center; border-radius: 50%; background: #1e3a8a; color: #ffffff; font-size: 14px; font-weight: 700; flex-shrink: 0; margin-top: 4px; }
.bt-step-body { flex: 1; }
.bt-step-title { font-weight: 700; font-size: 16px; color: #0f172a; margin-bottom: 6px; }
.bt-step-desc { font-size: 15.5px; line-height: 1.9; color: #64748b; }

.bt-card { background: #f8fafc; border-radius: 12px; padding: 24px 26px; margin: 24px 0; position: relative; }
.bt-card::before { content: ""; position: absolute; top: 0; left: 0; width: 4px; height: 100%; background: #1e3a8a; border-radius: 12px 0 0 12px; }
.bt-card-body { padding-left: 10px; font-size: 15.5px; line-height: 1.9; color: #334155; }

.bt-info { background: #eff6ff; border-left: 4px solid #3b82f6; padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 20px 0; font-size: 15px; line-height: 1.85; color: #1e40af; }
.bt-warn { background: #fffbeb; border-left: 4px solid #f59e0b; padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 20px 0; font-size: 15px; line-height: 1.85; color: #78350f; }
.bt-success { background: #ecfdf5; border-left: 4px solid #10b981; padding: 16px 20px; border-radius: 0 10px 10px 0; margin: 20px 0; font-size: 15px; line-height: 1.85; color: #065f46; }

.bt-highlight { display: inline-block; background: #1e3a8a; color: #ffffff; padding: 6px 18px; border-radius: 0 14px 14px 0; font-size: 14px; font-weight: 700; margin: 20px 0; }

.bt-tag { display: inline-block; background: #ffffff; border: 1px solid #1e3a8a; color: #1e3a8a; padding: 5px 16px; border-radius: 100px; font-size: 13px; margin: 5px 8px 5px 0; }

.bt-btn-wrap { margin: 20px 0; text-align: center; }
.bt-btn { display: inline-block; background: #1e3a8a; color: #ffffff; padding: 12px 32px; border-radius: 100px; font-size: 15px; font-weight: 600; }

.bt-divider { text-align: center; color: #d4a574; font-size: 14px; letter-spacing: 8px; margin: 32px 0; }
.bt-hr { border: none; border-top: 1px solid #e2e8f0; margin: 30px 0; }

.bt-img-wrap { margin: 26px 0 18px 0; text-align: center; }
.bt-img { max-width: 100%; border-radius: 12px; display: block; width: 100%; }
.bt-img-caption { text-align: center; font-size: 13px; color: #94a3b8; margin: 12px 0 0 0; font-style: italic; }

.bt-blockquote { border-left: 4px solid #d4a574; background: #fffbeb; padding: 16px 20px; margin: 20px 0; border-radius: 0 10px 10px 0; font-size: 15px; line-height: 1.85; color: #78350f; font-style: italic; }

.bt-ul, .bt-ol { padding-left: 2em; margin: 20px 0; }
.bt-li { font-size: 16px; line-height: 1.9; color: #334155; margin-bottom: 10px; }

.bt-follow-simple { margin: 36px 0 20px 0; padding: 36px 24px 32px 24px; text-align: center; background: #f8fafc; border-radius: 16px; border: 1px solid #e2e8f0; position: relative; }
.bt-follow-simple::before { content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 80px; height: 3px; background: linear-gradient(90deg, transparent 0%, #d4a574 50%, transparent 100%); }
.bt-follow-simple .bfs-icon { font-size: 40px; margin-bottom: 18px; line-height: 1; display: block; }
.bt-follow-simple .bfs-title { font-size: 19px; color: #1e3a8a; font-weight: 700; letter-spacing: 3px; margin-bottom: 12px; }
.bt-follow-simple .bfs-line { width: 40px; height: 2px; background: #d4a574; margin: 0 auto 16px auto; }
.bt-follow-simple .bfs-sub { font-size: 14px; color: #94a3b8; line-height: 1.8; margin-bottom: 20px; font-style: italic; }
.bt-follow-simple .bfs-hint { display: inline-block; padding: 8px 24px; background: #1e3a8a; color: #ffffff; font-size: 13px; border-radius: 100px; letter-spacing: 3px; margin-bottom: 16px; font-weight: 500; }
.bt-follow-simple .bfs-brand { font-size: 12px; color: #d4a574; letter-spacing: 4px; font-weight: 600; }

.bt-foot { margin-top: 36px; padding-top: 22px; border-top: 1px solid #e2e8f0; text-align: center; }
.bt-foot-brand { font-size: 12px; color: #d4a574; letter-spacing: 4px; font-weight: 600; margin-bottom: 10px; }
.bt-foot-text { font-size: 11.5px; color: #94a3b8; line-height: 1.7; }

.bt-strong { font-weight: 700; color: #0f172a; }
.bt-highlight-text { background: #fef3c7; padding: 2px 8px; border-radius: 4px; color: #78350f; }
.bt-red { color: #dc2626; font-weight: 700; }
.bt-blue { color: #1e3a8a; font-weight: 700; }
.bt-gray { color: #64748b; }
.bt-bg-yellow { background: #fef3c7; padding: 2px 8px; border-radius: 4px; }
.bt-bg-blue { background: #dbeafe; padding: 2px 8px; border-radius: 4px; }
.bt-center { text-align: center; margin: 12px 0; }