:root{--bb-primary: #003DA5;--bb-primary-dark: #002A70;--bb-gold: #C9A227;--bb-gold-strong: #E8C15A;--bb-bg: #F4F6FB;--bb-ink: #1A2433;--bb-sub: #5A6B84;--bb-line: #DDE4EF}*{box-sizing:border-box}body{margin:0;background:var(--bb-bg);color:var(--bb-ink);font-family:Source Han Sans SC,PingFang SC,Microsoft YaHei,sans-serif}.serif{font-family:"Source Han Serif SC","Noto Serif SC",SimSun,serif}.bb-page{max-width:1180px;margin:0 auto;padding:28px 24px 56px}.bb-goldline{height:3px;background:linear-gradient(90deg,var(--bb-gold) 0%,#f3e7c2 55%,transparent 100%)}.bb-header{display:flex;align-items:center;height:64px;padding:0 24px;max-width:1300px;margin:0 auto}.bb-logo{display:flex;align-items:center;gap:10px;cursor:pointer;margin-right:28px}.bb-logo .mark{width:40px;height:40px;border-radius:6px;background:linear-gradient(135deg,#003da5,#002a70);border:2px solid var(--bb-gold);display:flex;align-items:center;justify-content:center;color:var(--bb-gold-strong);font-size:20px;font-weight:700;font-family:"Source Han Serif SC",SimSun,serif}.bb-logo .name{color:#fff;font-size:22px;font-weight:700;letter-spacing:4px;font-family:"Source Han Serif SC",SimSun,serif;line-height:1.1}.bb-logo .name i{display:block;font-style:normal;font-size:10px;letter-spacing:1px;color:var(--bb-gold-strong);font-family:sans-serif}.bb-footer{background:var(--bb-primary-dark);color:#ffffffbf;text-align:center;padding:26px 16px;font-size:12px;line-height:2.1;margin-top:24px}.bb-footer b{color:var(--bb-gold-strong);letter-spacing:3px;font-size:14px}.bb-hero{background:linear-gradient(120deg,var(--bb-primary-dark),var(--bb-primary));color:#fff}.bb-hero-in{max-width:1180px;margin:0 auto;padding:58px 24px;display:flex;justify-content:space-between;align-items:center;gap:32px;flex-wrap:wrap}.bb-hero h1{font-family:"Source Han Serif SC",SimSun,serif;font-size:42px;letter-spacing:6px;margin:0;font-weight:700}.bb-hero h1 em{font-style:normal;color:var(--bb-gold-strong)}.bb-hero p{margin:14px 0 0;font-size:16px;color:#ffffffe0;letter-spacing:2px}.bb-seal{width:118px;height:118px;border:3px solid var(--bb-gold);border-radius:12px;display:flex;flex-direction:column;align-items:center;justify-content:center;background:#ffffff0f;flex-shrink:0}.bb-seal b{font-size:34px;color:var(--bb-gold-strong);letter-spacing:2px;font-family:"Source Han Serif SC",SimSun,serif}.bb-seal span{font-size:10px;color:#ffffffbf;margin-top:6px;letter-spacing:1px}.bb-sec-title{display:flex;align-items:center;gap:12px;margin:10px 0 22px}.bb-sec-title:before{content:"";width:6px;height:26px;background:var(--bb-gold);border-radius:3px}.bb-sec-title h2{font-family:"Source Han Serif SC",SimSun,serif;font-size:24px;margin:0;letter-spacing:3px}.bb-sec-title small{color:var(--bb-sub);font-size:13px;margin-left:6px}.bb-m-header{position:sticky;top:0;z-index:20;background:var(--bb-primary-dark);color:#fff;display:flex;align-items:center;gap:8px;padding:12px 16px;font-size:17px;font-weight:700;letter-spacing:2px}.bb-m-header .mark{width:26px;height:26px;border-radius:5px;border:1.5px solid var(--bb-gold);background:var(--bb-primary);color:var(--bb-gold-strong);display:flex;align-items:center;justify-content:center;font-size:14px;font-family:"Source Han Serif SC",SimSun,serif}.bb-m-body{padding:14px 14px 76px;max-width:680px;margin:0 auto}.bb-m-tabbar{position:fixed;bottom:0;left:0;right:0;z-index:30;background:#fff;border-top:1px solid var(--bb-line);display:flex}.bb-m-tabbar a{flex:1;text-align:center;padding:8px 0 7px;color:var(--bb-sub);text-decoration:none;font-size:12px}.bb-m-tabbar a.on{color:var(--bb-primary);font-weight:700}.bb-m-tabbar a .ic{font-size:19px;display:block;margin-bottom:2px}@media (max-width: 768px){.bb-hero h1{font-size:28px;letter-spacing:3px}.bb-hero-in{padding:36px 18px}.bb-seal{display:none}}