* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        body {
            background: #f9efe0;
            background-image: radial-gradient(circle at 10% 20%, rgba(255,215,140,0.3) 0%, transparent 30%);
            color: #2f231c;
            line-height: 1.6;
        }
        /* 导航 */
        .navbar {
            background: #a33327;
            background: linear-gradient(135deg, #8b2c1f 0%, #b34934 100%);
            padding: 0.7rem 5%;
            box-shadow: 0 4px 10px rgba(140, 40, 20, 0.5);
            /*position: sticky;*/
            top: 0;
            z-index: 100;
        }
        .nav-inner {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 2rem;
            font-weight: 800;
            color: #ffeeb5;
            text-shadow: 3px 3px 0 #732c1c;
        }
        .logo i {
            font-style: normal;
            background: #ffd966;
            color: #872e1b;
            padding: 0 8px;
            border-radius: 30px;
            margin-right: 5px;
        }
        .nav-links {
            display: flex;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: #fff1cf;
            text-decoration: none;
            font-weight: 500;
            padding: 4px 0;
            border-bottom: 2px solid transparent;
            transition: 0.2s;
        }
        .nav-links a:hover {
            border-bottom-color: #ffc107;
            color: white;
        }
        @media (max-width:700px){
            .nav-inner{flex-direction:column; gap:8px;}
        }

        /* 容器 */
        .main {
            max-width: 1300px;
            margin: 0 auto;
            padding: 1.5rem 5%;
        }

        /* banner */
        .hero {
            background: #262216;
            background: linear-gradient(120deg, #4e3321 0%, #b45f3a 100%);
            border-radius: 30px 8px 30px 8px;
            padding: 2.8rem 2.5rem;
            margin: 1.8rem 0 2.8rem;
            color: white;
            box-shadow: 15px 15px 0 #5e3b24;
            border: 2px solid #efc9a0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 2rem;
        }
        .hero h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.2;
            text-shadow: 3px 3px 0 #391f12;
        }
        .hero .sub {
            background: rgba(0,0,0,0.3);
            padding: 0.8rem 2rem;
            border-radius: 50px;
            font-size: 1.4rem;
            backdrop-filter: blur(4px);
            border: 1px solid #ffd58c;
        }
        .hero strong {
            color: #ffcf8a;
            background: #6b3320;
            padding: 2px 8px;
            border-radius: 20px;
        }
        .hero-ribbon {
            background: #e1b87c;
            color: #2f1f13;
            font-weight: bold;
            padding: 1rem 2rem;
            border-radius: 60px;
            font-size: 1.6rem;
            box-shadow: 0 8px 0 #9b582e;
        }

        /* 版块卡片 */
        .section-card {
            background: #ffffffd4;
            backdrop-filter: blur(2px);
            border: 2px solid #dbb78c;
            border-radius: 48px 16px 48px 16px;
            padding: 2.2rem 2rem;
            margin-bottom: 2.8rem;
            box-shadow: 0 15px 0 #ac8a62;
        }
        .section-title {
            font-size: 2.2rem;
            margin-bottom: 1.6rem;
            border-left: 15px solid #bd6b3b;
            padding-left: 1.2rem;
            color: #3b2f1f;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .section-title i {
            font-size: 2rem;
            color: #b44d1c;
        }
        .grid-2, .grid-4 {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 2rem;
        }
        .inset-box {
            background: #efe2cf;
            border-radius: 30px;
            padding: 1.5rem;
            border: 1px solid #c49b71;
            box-shadow: inset 0 -3px 0 #996f48;
        }
        .inset-box h3 {
            color: #964b22;
            margin-bottom: 0.8rem;
            border-bottom: 2px dotted #ab7f56;
        }
        strong {
            color: #bb3f00;
            background: linear-gradient(to right, #ffefdb, transparent);
            font-weight: 700;
            padding: 0 2px;
        }
        .btn-large {
            display: inline-block;
            background: #c96b2b;
            border: 2px solid #fec382;
            color: white;
            font-weight: bold;
            padding: 12px 30px;
            border-radius: 40px;
            text-decoration: none;
            box-shadow: 0 6px 0 #773e1c;
            margin: 0.8rem 0.5rem 0.8rem 0;
            transition: 0.1s;
        }
        .btn-large:hover {
            transform: translateY(3px);
            box-shadow: 0 3px 0 #773e1c;
        }

        /* FAQ 区块 */
        .faq-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px,1fr));
            gap: 1.5rem;
            margin: 1.5rem 0;
        }
        .faq-box {
            background: #f6e6d2;
            border-radius: 30px;
            padding: 1.5rem;
            border: 1px solid #c48d5c;
        }
        .faq-box h4 {
            color: #753e1f;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 0.5rem;
        }

        /* 平台按钮行 */
        .platform-bar {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 1.2rem;
            margin: 2.5rem 0 1rem;
        }
        .plat-btn {
            background: #f3d9b1;
            border: 3px solid #bb591c;
            color: #2b1c0f;
            padding: 0.7rem 1.8rem;
            border-radius: 50px;
            font-weight: 700;
            text-decoration: none;
            font-size: 1.2rem;
            box-shadow: 0 6px 0 #8f4b24;
            transition: 0.15s;
            min-width: 140px;
            text-align: center;
        }
        .plat-btn:hover {
            transform: translateY(4px);
            box-shadow: 0 2px 0 #8f4b24;
            background: #ffdfaa;
        }
        .plat-btn i {
            margin-right: 6px;
            color: #b63e0c;
        }

        /* footer */
        .footer-links {
            text-align: center;
            margin: 3rem 0 1rem;
            padding-top: 2rem;
            border-top: 4px double #be7c4a;
        }
        .footer-links a {
            color: #693f23;
            text-decoration: underline dotted;
            margin: 0 10px;
        }
        .copyright {
            background: #452e1e;
            color: #eaceaa;
            padding: 1.5rem;
            border-radius: 80px 80px 0 0;
            text-align: center;
        }