/* ============================================================
                   导航栏
                   ============================================================ */
        .navbar {
            background: #ffffff;
            box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
            position: sticky;
            top: 0;
            z-index: 1000;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 32px;
            transition: box-shadow 0.3s;
            height: 100px;
        }

        .navbar.scrolled {
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
        }

        .navbar .logo {
            padding-left: 10px;
            height: 130%;
            width: auto;
            font-size: 2rem;
            font-weight: 700;
            color: #4a0b0b;
            letter-spacing: -0.5px;
            flex-shrink: 0;
        }

        .navbar .logo span {
            color: #e9513c;
        }

        .navbar .logo img {

            color: #e9513c;
        }

        .navbar .nav-links {
            display: flex;
            align-items: center;
            gap: 72px;
            position: absolute;
            left: 50%;
            transform: translateX(-50%);
        }

        .navbar .nav-links a {
            font-weight: 600;
            color: #2d4055;
            transition: color 0.3s;
            font-size: 1.15rem;
            position: relative;
            white-space: nowrap;
            letter-spacing: 0.3px;
            cursor: pointer;
        }

        .navbar .nav-links a:hover {
            color: #2b7fc1;
        }

        .navbar .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2.5px;
            background: #2b7fc1;
            transition: width 0.3s;
        }

        .navbar .nav-links a:hover::after {
            width: 100%;
        }

        .navbar .nav-links a.active {
            color: #2b7fc1;
        }

        .navbar .nav-links a.active::after {
            width: 100%;
        }

        .navbar .btn-book {
            background: #0b2a4a;
            color: #fff !important;
            padding: 12px 34px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            transition: background 0.25s, transform 0.15s;
            flex-shrink: 0;
            white-space: nowrap;
            cursor: pointer;
        }

        .navbar .btn-book:hover {
            background: #1c4e70;
            transform: translateY(-2px);
        }

        .navbar .btn-book::after {
            display: none !important;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            padding: 4px;
            z-index: 1001;
        }

        .hamburger span {
            display: block;
            width: 28px;
            height: 3px;
            background: #0b2a4a;
            border-radius: 2px;
            transition: 0.25s;
        }