/* ===== 教程页样式（与主站一致） ===== */
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:-apple-system,'SF Pro Display','PingFang SC','Microsoft YaHei',sans-serif;background:#f0f2f5;color:#1d1d1f;line-height:1.75}
a{text-decoration:none;color:inherit}

.site-nav{position:sticky;top:0;z-index:1000;background:rgba(240,242,245,.88);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(0,0,0,.06);padding:0 32px;height:56px;display:flex;align-items:center;justify-content:space-between}
.site-nav-logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:18px;color:#2d3436}
.site-nav-logo svg{width:24px;height:24px;color:#3b82f6}
.site-nav-links{display:flex;gap:24px;list-style:none}
.site-nav-links a{font-size:14px;color:#636e72;transition:color .2s}
.site-nav-links a:hover{color:#3b82f6}
.site-nav-links a.active{color:#3b82f6;font-weight:600}

.wrap{max-width:860px;margin:0 auto;padding:48px 24px 80px}

/* 列表页 */
.blog-head{text-align:center;margin-bottom:44px}
.blog-eyebrow{font-size:12px;font-weight:700;letter-spacing:3px;color:#3b82f6;margin-bottom:14px}
.blog-head h1{font-size:32px;color:#2d3436;margin-bottom:14px}
.blog-head p{font-size:15px;color:#636e72;max-width:560px;margin:0 auto}
.post-list{display:flex;flex-direction:column;gap:16px}
.post-card{display:block;background:#fff;border-radius:18px;padding:24px 26px;box-shadow:0 2px 14px rgba(0,0,0,.04);transition:all .3s}
.post-card:hover{box-shadow:0 8px 28px rgba(0,0,0,.09);transform:translateY(-2px)}
.post-card h2{font-size:17px;color:#2d3436;margin-bottom:8px;line-height:1.5;transition:color .2s}
.post-card:hover h2{color:#3b82f6}
.post-card p{font-size:13.5px;color:#636e72;line-height:1.7}
.post-meta{display:flex;gap:12px;margin-top:12px;font-size:12px;color:#b2bec3}
.post-tag{background:#e8edf2;color:#3b82f6;padding:2px 10px;border-radius:8px;font-size:11px;font-weight:600}

/* 文章页 */
.article{background:#fff;border-radius:22px;padding:44px 48px;box-shadow:0 2px 16px rgba(0,0,0,.05)}
.article h1{font-size:27px;color:#2d3436;line-height:1.45;margin-bottom:14px}
.article-meta{font-size:12.5px;color:#b2bec3;margin-bottom:28px;padding-bottom:20px;border-bottom:1px solid #eef0f3;display:flex;gap:14px;flex-wrap:wrap}
.article h2{font-size:19px;color:#2d3436;margin:34px 0 14px;padding-left:12px;border-left:4px solid #3b82f6}
.article h3{font-size:15.5px;color:#2d3436;margin:22px 0 10px}
.article p{font-size:14.5px;color:#4b5563;margin-bottom:14px}
.article ul,.article ol{margin:0 0 14px 22px}
.article li{font-size:14.5px;color:#4b5563;margin-bottom:8px}
.article strong{color:#2d3436}
.tip{background:#eef4ff;border-left:4px solid #3b82f6;border-radius:0 12px 12px 0;padding:14px 18px;font-size:13.5px;color:#4b5563;margin:18px 0}
.tip strong{color:#3b82f6}
.warn{background:#fff7ed;border-left:4px solid #f59e0b;border-radius:0 12px 12px 0;padding:14px 18px;font-size:13.5px;color:#4b5563;margin:18px 0}
.warn strong{color:#d97706}
.param-table{width:100%;border-collapse:collapse;margin:16px 0 20px;font-size:13.5px}
.param-table th{background:#e8edf2;color:#2d3436;padding:10px 14px;text-align:left;font-weight:600}
.param-table td{padding:10px 14px;border-bottom:1px solid #eef0f3;color:#4b5563}

/* 文末转化卡 */
.cta-card{margin-top:40px;background:linear-gradient(135deg,#3b82f6,#2563eb);border-radius:20px;padding:30px 32px;color:#fff}
.cta-card h2{border:none;padding:0;margin:0 0 10px;font-size:20px;color:#fff}
.cta-card p{color:rgba(255,255,255,.85);font-size:14px;margin-bottom:20px}
.cta-btns{display:flex;gap:12px;flex-wrap:wrap}
.cta-btn{display:inline-flex;align-items:center;gap:8px;padding:12px 24px;border-radius:12px;font-size:14px;font-weight:600;transition:all .3s}
.cta-btn-primary{background:#fff;color:#2563eb}
.cta-btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,.2)}
.cta-btn-ghost{background:rgba(255,255,255,.15);color:#fff;border:1px solid rgba(255,255,255,.35)}
.cta-btn-ghost:hover{background:rgba(255,255,255,.25)}

.back-link{display:inline-flex;align-items:center;gap:6px;font-size:13px;color:#636e72;margin-bottom:22px;transition:color .2s}
.back-link:hover{color:#3b82f6}

.site-footer{background:#e0e5ea;padding:24px;text-align:center;font-size:12.5px;color:#b2bec3;box-shadow:0 -4px 12px #c4c9ce}

@media(max-width:640px){
    .article{padding:28px 22px}
    .article h1{font-size:22px}
    .site-nav{padding:0 18px}
    .site-nav-links{gap:14px}
}