:root{--red: #c30d23;--red-dark: #a30a1c;--red-deep: #87091a;--blue: #1f4e8c;--ink: #222222;--ink-soft: #555555;--ink-muted: #888888;--line: #e5e5e5;--bg: #f5f6f8;--paper: #ffffff;--radius: 8px;--container: 1200px;--font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Heiti SC", "Segoe UI", Roboto, Arial, sans-serif}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-sans);color:var(--ink);background:var(--bg);line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}ul,ol{list-style:none}img{max-width:100%;display:block}.container{max-width:var(--container);margin:0 auto;padding:0 16px}.topbar{background:#2b2b33;color:#cfd3da;font-size:13px}.topbar-inner{display:flex;align-items:center;justify-content:space-between;height:36px;gap:16px}.topbar-links{display:flex;gap:18px;align-items:center}.topbar a:hover{color:#fff}.topbar .divider{width:1px;height:12px;background:#4a4a55}.site-header{background:var(--paper);border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;gap:20px;padding:18px 0}.brand{display:flex;align-items:center;gap:14px}.brand-logo{width:62px;height:62px;flex:none}.brand-name{font-size:30px;font-weight:800;letter-spacing:2px;color:var(--red);line-height:1.25}.brand-sub{font-size:12px;color:var(--ink-muted);letter-spacing:.6px;text-transform:uppercase}.header-search{margin-left:auto;display:flex;align-items:center}.header-search input{width:260px;height:38px;border:2px solid var(--red);border-right:none;border-radius:4px 0 0 4px;padding:0 12px;font-size:14px;font-family:inherit;outline:none}.header-search button{height:38px;padding:0 20px;background:var(--red);color:#fff;border:none;border-radius:0 4px 4px 0;font-size:14px;font-family:inherit;cursor:pointer}.header-search button:hover{background:var(--red-dark)}.main-nav{background:linear-gradient(90deg,var(--red-deep),var(--red) 45%,#d8232f);box-shadow:0 2px 6px #0000001f}.main-nav ul{display:flex}.main-nav a{display:block;padding:14px 26px;color:#fff;font-size:16px;font-weight:600;letter-spacing:1px}.main-nav a:hover,.main-nav a.active{background:var(--red-deep)}.banner{position:relative;background:var(--red-deep);overflow:hidden}.banner-img{width:100%;height:440px;object-fit:cover;object-position:center}.banner-overlay{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:center;gap:14px;background:linear-gradient(90deg,#5a050fb8,#5a050f40 55%,#5a050f00)}.banner-title{color:#fff;font-size:44px;font-weight:800;letter-spacing:4px;text-shadow:0 2px 10px rgba(0,0,0,.35)}.banner-sub{color:#ffe3c2;font-size:19px;letter-spacing:2px}.banner-actions{display:flex;gap:14px;margin-top:10px}.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 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