* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', system-ui, -apple-system, sans-serif; }

        html, body {
            height: 100%;
            overflow: hidden;
        }

        body {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            position: relative;
        }

        /* ===== 背景动态光斑 ===== */
        .bg-blobs {
            position: fixed;
            inset: 0;
            overflow: hidden;
            z-index: 0;
        }
        .blob {
            position: absolute;
            border-radius: 50%;
            filter: blur(80px);
            opacity: 0.4;
            animation: float 20s ease-in-out infinite;
        }
        .blob-1 {
            width: 500px; height: 500px;
            background: radial-gradient(circle, #2a7de1, transparent 70%);
            top: -150px; left: -150px;
            animation-delay: 0s;
        }
        .blob-2 {
            width: 400px; height: 400px;
            background: radial-gradient(circle, #7c3aed, transparent 70%);
            bottom: -100px; right: -100px;
            animation-delay: -7s;
        }
        .blob-3 {
            width: 350px; height: 350px;
            background: radial-gradient(circle, #06b6d4, transparent 70%);
            top: 50%; right: 20%;
            animation-delay: -14s;
        }
        @keyframes float {
            0%, 100% { transform: translate(0, 0) scale(1); }
            33% { transform: translate(40px, -30px) scale(1.1); }
            66% { transform: translate(-30px, 40px) scale(0.95); }
        }

        /* ===== 主容器 ===== */
        .login-container {
            position: relative;
            z-index: 1;
            width: 100%;
            max-width: 1000px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        /* ===== 左侧品牌 ===== */
        .login-hero {
            color: #e2e8f0;
            padding: 20px;
        }
        .login-hero .brand {
            display: flex;
            align-items: center;
            gap: 14px;
            margin-bottom: 28px;
        }
        .login-hero .brand-icon {
            width: 52px; height: 52px;
            border-radius: 14px;
            background: linear-gradient(135deg, #2a7de1, #7c3aed);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: #fff;
            box-shadow: 0 10px 30px rgba(42, 125, 225, 0.4);
        }
        .login-hero .brand-name {
            font-size: 26px;
            font-weight: 700;
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #fff, #a8c7eb);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .login-hero h2 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -1px;
        }
        .login-hero h2 span {
            background: linear-gradient(135deg, #2a7de1, #06b6d4);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .login-hero p {
            color: #94a3b8;
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 26px;
        }
        .login-hero .features {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .login-hero .features li {
            display: flex;
            align-items: center;
            gap: 12px;
            color: #cbd5e1;
            font-size: 14px;
        }
        .login-hero .features i {
            width: 24px; height: 24px;
            border-radius: 6px;
            background: rgba(42, 125, 225, 0.15);
            color: #2a7de1;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
        }

        /* ===== 右侧登录卡片 ===== */
        .login-box {
            background: rgba(30, 41, 59, 0.7);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid rgba(148, 163, 184, 0.15);
            border-radius: 24px;
            padding: 40px 36px;
            box-shadow:
                0 20px 60px rgba(0, 0, 0, 0.4),
                inset 0 1px 0 rgba(255, 255, 255, 0.05);
            position: relative;
            overflow: hidden;
        }
        .login-box::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, #2a7de1, #7c3aed, transparent);
        }

        .login-box .logo {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .login-box .logo i {
            color: #2a7de1;
        }
        .login-box .sub {
            color: #94a3b8;
            font-size: 14px;
            margin-bottom: 28px;
        }

        .login-box .error {
            background: rgba(220, 53, 69, 0.15);
            color: #fca5a5;
            padding: 12px 16px;
            border-radius: 10px;
            font-size: 13px;
            margin-bottom: 20px;
            border: 1px solid rgba(220, 53, 69, 0.3);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .login-box .field {
            margin-bottom: 18px;
            position: relative;
        }
        .login-box .field label {
            display: block;
            font-size: 13px;
            font-weight: 500;
            color: #cbd5e1;
            margin-bottom: 6px;
        }
        .login-box .field .input-wrap {
            position: relative;
        }
        .login-box .field .input-wrap i.input-icon {
            position: absolute;
            left: 14px;
            top: 50%;
            transform: translateY(-50%);
            color: #64748b;
            font-size: 14px;
            pointer-events: none;
            transition: color 0.2s;
        }
        .login-box .field input {
            width: 100%;
            padding: 12px 14px 12px 42px;
            background: rgba(15, 23, 42, 0.6);
            border: 1px solid rgba(148, 163, 184, 0.2);
            border-radius: 10px;
            font-size: 14px;
            color: #fff;
            outline: none;
            transition: all 0.2s;
        }
        .login-box .field input::placeholder {
            color: #64748b;
        }
        .login-box .field input:focus {
            border-color: #2a7de1;
            background: rgba(15, 23, 42, 0.9);
            box-shadow: 0 0 0 4px rgba(42, 125, 225, 0.15);
        }
        .login-box .field input:focus + i.input-icon,
        .login-box .field .input-wrap:focus-within i.input-icon {
            color: #2a7de1;
        }

        .login-box .remember {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 24px;
            font-size: 13px;
            color: #94a3b8;
            cursor: pointer;
            user-select: none;
        }
        .login-box .remember input[type="checkbox"] {
            width: 16px; height: 16px;
            accent-color: #2a7de1;
            cursor: pointer;
        }

        .login-box .btn {
            width: 100%;
            padding: 13px;
            background: linear-gradient(135deg, #2a7de1, #7c3aed);
            color: #fff;
            border: none;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s;
            box-shadow: 0 8px 24px rgba(42, 125, 225, 0.35);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            position: relative;
            overflow: hidden;
        }
        .login-box .btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 30px rgba(42, 125, 225, 0.5);
        }
        .login-box .btn:active {
            transform: translateY(0);
        }
        .login-box .btn .spinner {
            display: none;
        }
        .login-box .btn.loading .spinner {
            display: inline-block;
            animation: spin 0.8s linear infinite;
        }
        .login-box .btn.loading .btn-text {
            display: none;
        }
        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        .login-box .footer {
            margin-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #94a3b8;
        }
        .login-box .footer a {
            color: #2a7de1;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.2s;
        }
        .login-box .footer a:hover {
            color: #7c3aed;
            text-decoration: underline;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 900px) {
            .login-container {
                grid-template-columns: 1fr;
                gap: 30px;
                max-width: 440px;
            }
            .login-hero {
                display: none;
            }
            .login-box {
                padding: 32px 26px;
            }
        }

        @media (max-width: 480px) {
            body {
                padding: 12px;
            }
            .login-box {
                padding: 26px 20px;
                border-radius: 18px;
            }
            .login-box .logo {
                font-size: 22px;
            }
            .login-box .btn {
                font-size: 14px;
                padding: 12px;
            }
        }